JP5432769B2 - Curve conveyor - Google Patents

Description

  The present invention relates to a curved conveyor whose conveying path is curved in an arc shape, and relates to a curved conveyor that can increase the conveying speed, has excellent maintainability and durability, and can be suitably used particularly for conveying powder.

Various types of conveyors are used in production lines in various industries according to production lines and conveyed items. In order to change the conveyance direction of a conveyed product from the relationship of the layout of a production line, etc., the curve conveyor which conveys a conveyed product in a curve shape is used.
In general, a curve conveyor has a conveyor belt stretched between two end rollers arranged at a predetermined angle.
In such a curve conveyor, a centripetal force (force toward the center) acts on the conveyor belt during driving, and the conveyor belt may meander. In order to suppress such centripetal force and prevent meandering of the conveyor belt, a synthetic resin bead is continuously attached to the outer peripheral portion of the conveyor belt along the outer peripheral portion. It is sandwiched from above and below by a rotating body (mainly a bearing) to prevent the conveyor belt from moving to the inner peripheral side.
For example, (Patent Document 1) states that “a conveyor belt is stretched between two end rollers arranged at a predetermined angle, and a plurality of end rollers are rotatably attached to the support shaft and the support shaft. In the curve conveyor composed of the short rollers, a bearing having an outer diameter of the outer race larger than the outer diameter of the short rollers is interposed between the adjacent short rollers at least on the belt outer peripheral side. A characteristic curve conveyor "is disclosed.

Japanese Patent Laid-Open No. 2002-338022

However, the above conventional technique has the following problems.
(1) (Patent Document 1) can suppress the frictional noise from the end rollers accompanying the rotational drive of the conveyor belt, but it is difficult to increase the conveyance speed, and the fall and movement of the conveyed item are likely to occur, which makes handling easier. It had the problem of lacking.
(2) In addition, since the bearing is used to prevent meandering, the use environment is limited, maintenance is lacking, and it cannot be used for transporting powders such as lime, feed, fertilizer, etc., and its use is also limited. , Had a problem of lack of versatility.

  The present invention has been made to solve the above-described problems, and can smoothly move a transport belt and a flight along a curve, and can easily and surely adjust a tension, and has operational stability. It is excellent in low noise performance, can be operated at high speed, does not require a bearing to prevent meandering, does not limit the usage environment, does not use lubricating oil, and should be used in a dry state The purpose of the present invention is to provide a curved conveyor that is excellent in maintainability and durability, can be suitably used for transporting powders such as lime, feed, and fertilizer, is not limited in its use, and has excellent versatility. And

In order to solve the above problems, the curved conveyor of the present invention has the following configuration.
The curved conveyor according to claim 1 is a curved conveyor in which a conveyance path is curved in an arc shape, and includes an outer peripheral frame, an inner peripheral frame disposed to face the outer peripheral frame, the outer peripheral frame, and the inner A drive shaft pivotally supported on one end side of the peripheral frame; a large-diameter outer peripheral drive sprocket disposed on the outer peripheral frame side of the drive shaft; and an inner peripheral frame side of the drive shaft A small-diameter inner drive sprocket arranged, an outer driven shaft pivotally supported at the other end of the outer frame, and a pivot supported at the other end of the inner frame. The inner peripheral driven shaft, the outer peripheral take-up mechanism that slidably holds the outer peripheral driven shaft along the curvature of the outer peripheral frame, and the inner peripheral driven shaft as the curvature of the inner peripheral frame. Inner side take that is slidably held along And-up mechanism, wherein a large-diameter outer peripheral driven sprocket disposed on the outer peripheral frame side, the inner periphery of the small-diameter disposed in said peripheral frame side of the inner peripheral side driven shaft of the outer peripheral side driven shaft Winding between the driven side sprocket, the outer peripheral side sprocket and the outer peripheral driven side sprocket, the large pitch outer peripheral side chain, and the inner peripheral driving side sprocket and the inner peripheral driven side sprocket. A small-pitch inner peripheral side chain that is rotated, a pair of upper and lower outer peripheral side guide portions that are arranged on the outer peripheral frame and guide the outer peripheral side chain along the curvature of the outer peripheral frame, and an inner peripheral frame And a pair of upper and lower inner periphery side guide portions that guide the inner periphery side chain along the curvature of the inner periphery frame.
This configuration has the following effects.
(1) Winding between a large-diameter outer peripheral drive-side sprocket disposed on the outer peripheral frame side of the drive shaft and a large-diameter outer peripheral driven-side sprocket disposed on the outer peripheral frame side of the outer peripheral-side driven shaft Large-pitch outer peripheral side chain, a small-diameter inner peripheral drive-side sprocket disposed on the inner peripheral frame side of the drive shaft, and a small-diameter inner periphery disposed on the inner peripheral frame side of the inner peripheral side driven shaft Since it has a small-pitch inner circumferential side chain wound between the driven side sprocket and the outer circumferential side chain by fixing both sides in the width direction of the transport belt and flight to the outer circumferential side chain and the inner circumferential side chain, In addition, the transport belt and the flight can be smoothly moved along the outer peripheral frame and the inner peripheral frame curved in an arc shape by the inner peripheral side chain, and the operation stability is excellent.
(2) Even when using an endless loop-shaped transport band, the left and right ends of the transport band are fixed to the outer peripheral chain and the inner peripheral chain with different pitches. (Force toward the center) is difficult to act, the transport belt does not meander, high speed operation is possible, and there is no need to use a bearing to prevent meandering, limiting the usage environment In addition, it is excellent in installation flexibility, maintainability, and durability, and can be suitably used for conveying powdered materials such as lime, feed, and fertilizer, and is not limited in use and excellent in versatility.
(3) A pair of upper and lower outer peripheral guide portions disposed on the outer peripheral frame for guiding the outer peripheral chain along the curvature of the outer peripheral frame, and an inner peripheral chain disposed on the inner peripheral frame along the curvature of the inner peripheral frame. Since the upper and lower inner guide portions are guided in a straight line, the outer chain and the inner chain can be reliably and smoothly moved along the curvature of the outer frame and the inner frame. Excellent noise characteristics.
(4) An outer periphery in which the driven shaft is separated into an outer peripheral driven shaft on the outer peripheral frame side and an inner peripheral driven shaft on the inner peripheral frame side, and the outer peripheral driven shaft is slidably held along the curvature of the outer peripheral frame. Side take-up mechanism and inner circumference side take-up mechanism that holds the inner circumference driven shaft slidably along the curvature of the inner circumference frame. On the other hand, by independently sliding the outer peripheral side driven shaft and the inner peripheral side driven shaft, the tension of the outer peripheral side chain and the inner peripheral side chain can be properly adjusted, and the stability and reliability of the operation, Excellent maintainability.

Here, the outer peripheral frame and the inner peripheral frame are formed in a semicircular shape or a quadrant shape in accordance with the curvature of the circular arc on the outer peripheral side and the inner peripheral side of the conveyance path curved in an arc shape. Note that leg portions are erected at the important points of the outer peripheral frame and the inner peripheral frame.
The outer diameters of the outer peripheral drive side sprocket, the inner peripheral drive side sprocket, the outer peripheral driven side sprocket, and the inner peripheral driven side sprocket can be appropriately selected according to the curvature of the outer peripheral frame and the inner peripheral frame, respectively. Further, the pitches of the outer peripheral side chain and the inner peripheral side chain can be appropriately selected according to the curvature of the outer peripheral frame and the inner peripheral frame.
In this curved conveyor, endless loop-shaped transport belts are wound around the outer chain and inner chain, and the right and left ends are fixed to the outer chain and inner chain, or the left and right ends of multiple flights are fixed. Various transported items can be transported by being fixedly attached to the outer peripheral side chain and the inner peripheral side chain. When the transport belt is formed in an endless loop shape, it has flexibility and stretchability that can be deformed according to the difference in curvature between the outer peripheral frame and the inner peripheral frame and the difference in movement speed between the outer peripheral side and the inner peripheral side. Used. The material that forms the transport band itself may be flexible or stretchable, such as synthetic rubber, or the transport band may be knitted in a mesh with synthetic resin or metal, or divided into multiple unit members Alternatively, it may be formed into a structure capable of stretching and bending. In either case, fixing parts are provided at key points on both ends (left and right) in the width direction, and fixed to the outer chain and inner chain with screws, etc., along the curvature of the outer frame and inner frame. It can be curved (deformed).

  The outer peripheral side guide portion and the inner peripheral side guide portion may be any as long as they can guide the outer peripheral side chain and the inner peripheral side chain along the outer peripheral frame and the inner peripheral frame, respectively. Those in which the side chain and the inner peripheral chain are inserted are preferably used. The outer peripheral side guide part and inner peripheral side guide part reduce friction, wear, temperature rise and noise by making the contact part with the outer peripheral side chain and inner peripheral side chain made of synthetic resin or synthetic rubber. It can be operated at high speed and has excellent operational stability, durability, and maintainability.

As the drive unit for driving the drive shaft, a motor such as an inverter motor with a speed reducer is preferably used. The drive unit and the rotation shaft may be directly connected, or may be indirectly connected by combining a driven rotation unit such as a sprocket and a drive transmission member such as a belt or a chain.
By using a single drive unit with variable rotation speed or a combination with a speed reducer, the rotation speed can be adjusted, and the conveyance speed of the curve conveyor can be changed easily, resulting in excellent handling. .

Take-up mechanism to the General by adjusting the distance between the drive shaft by moving back and forth driven shaft in the longitudinal direction of the conveyor belt, and adjusts the tension of the chain (conveyor belt). In the curved conveyor of the present application, the conveyance path is curved in an arc shape, and the pitch and length of the outer peripheral chain and the inner peripheral chain are different, so the tension of the outer peripheral chain and the inner peripheral chain is adjusted independently. There is a need. Therefore, the driven shaft is separated into the outer peripheral side driven shaft and the inner peripheral side driven shaft, and the outer peripheral side driven shaft and the inner peripheral side driven shaft are separated from the outer peripheral frame and the inner peripheral side by the outer peripheral side take-up mechanism and the inner peripheral side take-up mechanism. It is slid independently along the curvature of the frame.
The outer periphery side take-up mechanism and the inner periphery side take-up mechanism can slide (move) the outer peripheral side driven shaft and the inner peripheral side driven shaft along the curvature of the outer peripheral frame and the inner peripheral frame, respectively. I just need it.

Invention of Claim 2 is the curve conveyor of Claim 1 , Comprising: The said outer peripheral side take-up mechanism has the outer peripheral side bearing holder which has a bearing part which supports the said outer peripheral side driven shaft rotatably. An outer peripheral take-up rail disposed above and below the outer peripheral bearing holder and guiding the outer peripheral bearing holder along the curvature of the outer peripheral frame; and the outer peripheral bearing holder along the outer peripheral take-up rail. An inner peripheral side bearing holder having a bearing portion that rotatably supports the inner peripheral side driven shaft, and the inner peripheral side bearing. An inner peripheral take-up rail disposed above and below the holder for guiding the inner peripheral bearing holder along the curvature of the inner peripheral frame; and the inner peripheral bearing holder along the inner peripheral take-up rail. Sliding It has a sliding drive unit, a configuration with that.
With this configuration, in addition to the operation of the first aspect , the following operation is provided.
(1) An outer peripheral side bearing holder in which an outer peripheral side take-up mechanism has a bearing portion that rotatably supports an outer peripheral side driven shaft, and an outer peripheral side bearing holder that is disposed above and below the outer peripheral side bearing holder and that has a curvature of the outer peripheral frame. The outer periphery side take-up rail is guided along the outer periphery side bearing holder, and the outer periphery side bearing holder is slid along the outer periphery side take-up rail. By sliding along the rail, the outer peripheral driven shaft can be moved along with the curvature of the outer peripheral frame together with the bearing portion, the tension of the outer peripheral chain can be adjusted easily and reliably, and tension adjustment Excellent workability and reliability.
(2) An inner peripheral side bearing holder in which an inner peripheral side take-up mechanism is disposed above and below the inner peripheral side bearing holder and an inner peripheral side bearing holder having a bearing portion that rotatably supports the inner peripheral side driven shaft. With an inner peripheral side take-up rail that guides the inner peripheral frame along the curvature of the inner peripheral frame and a sliding drive unit that slides the inner peripheral side bearing holder along the inner peripheral side take-up rail. By sliding the inner bearing holder along the inner take-up rail, the inner peripheral driven shaft can be moved along with the curvature of the inner frame along with the bearing portion. Can be easily and reliably adjusted, and the workability and reliability of tension adjustment are excellent.

Here, as the outer periphery side take-up rail and the inner periphery side take-up rail, those having a ridge portion or a ridge portion along the curvature of the outer periphery frame and the inner periphery frame, respectively, are preferably used. The curvature of the outer peripheral frame and the inner peripheral frame is ensured by engaging the concave or convex portions formed along the curvature of the outer peripheral frame and the inner peripheral frame above and below the outer peripheral bearing holder and the inner peripheral bearing holder. It is because it can be made to slide along.
The sliding drive part should just be able to slide the outer peripheral side bearing holder and the inner peripheral side bearing holder along the outer peripheral side take-up rail and the inner peripheral side take-up rail, respectively. In particular, those that move the outer peripheral bearing holder and the inner peripheral bearing holder back and forth by expansion and contraction of the sliding drive unit are excellent in operability and operational reliability and are preferably used. In order for the bearing holder to move smoothly along the curved outer peripheral take-up rail and the inner peripheral take-up rail, it is necessary to include at least one joint portion that can rotate in a horizontal plane.

The invention according to claim 3 is the curved conveyor according to claim 1 or 2 , wherein the outer peripheral side chain and the inner peripheral side guide part are formed in a substantially U-shaped cross section inside the outer peripheral side guide part and the inner peripheral side guide part. It has a structure provided with a rail member made of synthetic resin through which the inner peripheral side chain is inserted.
With this configuration, in addition to the operation of the first or second aspect , the following operation is provided.
(1) By having a rail member made of synthetic resin that is formed in a substantially U-shaped cross section inside the outer peripheral side guide portion and the inner peripheral side guide portion and through which the outer peripheral side chain and the inner peripheral side chain are inserted, Friction between the inner chain and the rail member can be reduced, temperature rise and noise can be suppressed, operation stability is excellent, high-speed operation is possible, and the outer chain and inner chain are worn. Difficult, long life and excellent maintainability.
(2) Since the rail member made of synthetic resin is disposed inside the outer periphery side guide portion and the inner periphery side guide portion, only the worn rail member can be replaced, and the resource saving and the maintenance properties are excellent.
(3) Since the rail member in contact with the outer peripheral side chain and the inner peripheral side chain is made of synthetic resin, it is not necessary to use lubricating oil, it can be used in a dry state, and the application is not limited, Excellent maintainability and versatility.

  Here, as a material of the rail member, a polymer resin such as polyethylene or polycarbonate is preferably used. In addition, carbon fiber reinforced plastic has excellent self-lubricating properties, so wear during sliding is small, no lubricating oil is required, and environmental protection, maintenance, and long life are excellent.

Invention of Claim 4 is a curve conveyor of any one of Claim 1 thru | or 3 , Comprising: It is formed in the elongate plate shape with a space | interval in the longitudinal direction of the said conveyance path. A plurality of fixed portions that are disposed and fixed to the outer peripheral side chain and the inner peripheral side chain at both ends, and a flexible deformable portion that connects the adjacent fixed portions to each other; It has the structure provided with the conveyance belt wound around the side chain and the said inner peripheral side chain, and pulled.
With this configuration, in addition to the operation of any one of claims 1 to 3 , the following operation is provided.
(1) Conveying belts wound around and pulled around the outer peripheral side chain and the inner peripheral side chain are formed in a rigid and long plate shape and are arranged at intervals in the longitudinal direction of the conveying path. Since there are a plurality of fixing portions fixed to the outer peripheral side chain and the inner peripheral side chain at the portion, the transport band, the outer peripheral side chain and the inner peripheral side chain can be easily fixed by the fixing portion. The transport belt can be reliably pulled by the circumferential chain, and the operation is highly reliable.
(2) Since the transport band has a flexible deformation part that connects the adjacent fixed parts, when the transport band is pulled by the outer peripheral side chain and the inner peripheral side chain, the deformation part is deformed, The entire transport belt is curved so that it follows the curvature of the outer and inner frames, and it can move smoothly without applying any load to the outer chain, inner chain, or transport belt. Excellent stability.

Here, the fixing part of the transport belt may be rigid enough to be securely fixed to the outer chain and the inner chain, and may be made of metal such as stainless steel or iron, or may be made of synthetic resin such as polyethylene or polypropylene. Good. A detachable fixing means such as a screw stopper is preferably used for fixing the fixing portion to the outer peripheral chain and the inner peripheral chain. If through holes are provided in the fixing pieces formed on the sides of the outer peripheral chain and inner peripheral chain, and mounting holes are drilled on both ends of the fixing portion, it is simple and reliable using fixing means such as bolts and nuts. Can be fixed to.
While the transport belt is moving in the horizontal plane, the interval between adjacent fixed parts is narrowed, and the deformed part is greatly curved and deformed into a waveform, but the transport belt can be used as an outer peripheral drive sprocket or inner peripheral drive sprocket. While moving along the curved surface, the interval between the adjacent fixed portions becomes wide, and the deformed portion extends so as to approach the curvature of the outer peripheral drive side sprocket and the inner peripheral drive side sprocket. In this way, the flexible deformation portion that connects the adjacent fixing portions expands and contracts (curves) in accordance with the interval between the adjacent fixing portions, so that the entire transport belt can smoothly follow the curvature of the outer peripheral frame and the inner peripheral frame. Can be moved to.
In addition, since the deformation | transformation part should just connect adjacent fixing | fixed parts, each may be independent, and it may become a continuous loop shape.
If the deformable part has enough flexibility or elasticity to absorb the difference in curvature between the outer peripheral frame and the inner peripheral frame and the difference in curvature between the outer peripheral drive side sprocket and the inner peripheral drive side sprocket, it will be made of synthetic resin. However, it may be made of synthetic rubber.

Invention of Claim 5 is a curve conveyor of Claim 4 , Comprising: The said deformation | transformation part of the said conveyance belt is formed in endless loop shape, The said fixing | fixed part is the front side which clamps the said deformation | transformation part by the front and back It has the structure provided with the fixing | fixed part and the back side fixing | fixed part.
With this configuration, in addition to the operation of the fourth aspect , the following operation is provided.
(1) The deformed portion of the transport band is formed in an endless loop shape, and the fixing portion has a front side fixing portion and a back side fixing portion that sandwich the deforming portion between the front and back sides. Attaching the conveyor band to the outer side chain and the inner side chain by simply holding it at the outer side chain and the inner side chain in accordance with the pitch of the outer side chain and inner side chain. It is excellent in assembly workability and mass productivity.

  Here, the front side fixing portion and the back side fixing portion are preferably formed in a long plate shape substantially parallel to the width direction of the transport band. The front side fixing part and the back side fixing part may be any one that can hold the deformed part between the front and back sides, and fixing means such as fitting and screwing can be appropriately selected and used. For example, by inserting a bolt or the like of a fixing means into a fixing hole provided in a longitudinal direction of the front side fixing part and the back side fixing part and a corresponding insertion hole provided in the deformation part, and screwing a nut Can be fixed with screws.

A sixth aspect of the present invention is the curved conveyor according to any one of the first to third aspects, wherein the curved conveyor is divided into a plurality of unit members, and each of the unit members is a rigid and long plate. A fixed portion fixed to the outer peripheral side chain and the inner peripheral side chain at both ends, and a stepped portion extending on the opposite side to the advancing direction of the fixed portion, and adjacent to each other It has the structure provided with the conveyance belt | band | zone where the said fixing | fixed part and step part of unit members overlap.
With this configuration, in addition to the operation of any one of claims 1 to 3 , the following operation is provided.
(1) The transport belt is divided into a plurality of unit members, and each unit member is formed in a rigid and long plate shape, and has fixing portions fixed to the outer peripheral side chain and the inner peripheral side chain at both ends. Therefore, each unit member can be simply fixed to the outer peripheral side chain and the inner peripheral side chain, and the assembly workability is excellent.
(2) Since the transport band is divided into a plurality of unit members, and each unit member is fixed to the outer peripheral side chain and the inner peripheral side chain at the fixing portions at both ends, the outer peripheral side moves along the transport path. In accordance with the movement of the chain and the inner peripheral side chain, each unit member can follow by changing the angle and distance, and is excellent in operation reliability and stability.
(3) Each unit member has a fixed portion and a stepped portion extending on the side opposite to the advancing direction of the fixed portion, and the fixed portion and the stepped portion between adjacent unit members are overlapped at the overlapping portion. Therefore, even if the angle and distance of each unit member changes according to the movement of the outer peripheral side chain and the inner peripheral side chain, there is no gap between adjacent unit members, and the minute Even a transport object can be reliably transported without being dropped, and the transport object or foreign matter can be prevented from being caught or intruded into the mechanism portion, so that the operation reliability and maintainability are excellent.

  Here, as the material of the unit member, the same material as that of the fixing portion of claim 5 is preferably used. In addition, the fixing between the fixing portion, the outer peripheral side chain, and the inner peripheral side chain is the same as that of the fifth aspect, and the description thereof is omitted.

The invention described in claim 7 is the curved conveyor according to any one of claims 1 to 3, the end portion fixing portion fixed to the outer peripheral side chain and the inner peripheral side chain, wherein A long plate-like transport plate that is provided in a continuous manner with an end fixing portion and is erected in the outer peripheral direction of the outer peripheral chain and the inner peripheral chain, and is spaced apart in the longitudinal direction of the transport path. And having a plurality of flights arranged.
With this configuration, in addition to the operation of any one of claims 1 to 3 , the following operation is provided.
(1) A plurality of flights arranged at intervals in the longitudinal direction of the conveyance path are fixed to the outer peripheral side chain and the inner peripheral side chain, and to the outer periphery connected to the end fixing portion. Because it has a long plate-shaped transport plate standing in the outer peripheral direction of the side chain and inner peripheral side chain, the outer periphery side chain and inner peripheral side chain can be fixed easily and reliably by the end fixing part. It can be moved smoothly along the curvature of the frame and the inner peripheral frame and can be transported by scraping it with a transport plate, which is excellent in operational reliability and stability.

Here, as the material of the end fixing portion of the flight, the same material as that of the fixing portion of claim 4 is preferably used. Further, since the fixing of the end fixing portion to the outer peripheral side chain and the inner peripheral side chain is the same as the fixing of the fixing portion of the fourth aspect , the description thereof is omitted.
In the flight, the transported object placed on the bottom plate of the transport path is transported so as to be scraped off by the transport plate. The flight installation interval can be appropriately selected according to the type and size of the transported object. As the material of the flight transport plate, metals such as stainless steel and iron, synthetic resins such as polyethylene and polypropylene, synthetic rubbers, and the like can be used alone or in combination. When a part of the transport plate or the entire transport plate is formed of an elastic member such as synthetic rubber, the transported object can be transported so that the front end of the transport plate is in contact with the bottom plate and the transport plate is bent or curved. . Thereby, it is hard to produce a clearance gap between the bottom plate of a conveyance path, and a conveyance board, and even fine conveyance objects, such as a granular material, can be conveyed efficiently. In addition, when a buffer member made of synthetic rubber or the like is attached partially or entirely to the contact surface of a metal or synthetic resin conveyance plate with the conveyance object, the conveyance object is not damaged and is reliable. Excellent.
The end fixing part and the conveying plate may be integrally formed from the beginning depending on the material to be used, or those formed separately may be joined by means such as screwing, bonding, welding, welding or the like. Also good.

According to invention of Claim 1, it has the following effects.
(1) By fixing the left and right ends of the transport belt and flight to the outer peripheral chain and the inner peripheral chain with different pitches, the transported object can be reliably and smoothly transferred along the outer peripheral frame and the inner peripheral frame curved in an arc shape. Especially when using an endless loop-shaped transport belt, the transport belt does not meander and can be operated at high speed, and there is no need to use a bearing to prevent meandering and the usage environment Providing a curved conveyor with excellent versatility with a wide range of applications that can be suitably used for transporting powdered materials such as lime, feed and fertilizer. Can do.
(2) By stably sliding the outer peripheral side driven shaft and the inner peripheral side driven shaft, the tension of the outer peripheral side chain and the inner peripheral side chain with different pitches and lengths can be adjusted properly. Can provide a curved conveyor with excellent performance, reliability and maintainability.

According to invention of Claim 2 , in addition to the effect of Claim 1 , it has the following effects.
(1) By sliding the outer peripheral side bearing holder and the inner peripheral side bearing holder along the outer peripheral side take-up rail and the inner peripheral side take-up rail by the sliding drive unit, the outer peripheral side driven shaft and the respective bearing units and Workability and reliability of tension adjustment that can move the inner peripheral driven shaft along the curvature of the outer peripheral frame and inner peripheral frame, and can easily and reliably adjust the tension of the outer peripheral chain and inner peripheral chain. It is possible to provide a curved conveyor having excellent properties.

According to invention of Claim 3 , in addition to the effect of Claim 1 or 2 , it has the following effects.
(1) There is little friction between the outer chain and inner chain and the rail member, temperature rise and noise are suppressed, operation stability is excellent, high-speed operation is possible, and there is no need to use lubricating oil. However, the present invention can provide a curved conveyor excellent in maintainability, versatility, and long life.

According to invention of Claim 4 , in addition to the effect of any one of Claims 1 thru | or 3 , it has the following effects.
(1) When pulling the transport band with the outer peripheral side chain and the inner peripheral side chain, the flexible deformation part that connects the fixed parts is deformed, so that the entire transport band has the curvature of the outer peripheral frame and the inner peripheral frame. It is possible to provide a curved conveyor excellent in durability and operation stability that can be smoothly moved without applying a load to the outer peripheral side chain, the inner peripheral side chain, the transport band, etc. .

According to invention of Claim 5 , in addition to the effect of Claim 4 , it has the following effects.
(1) The key points of the deformed part formed in an endless loop are clamped between the front side fixing part and the back side fixing part in accordance with the pitch of the outer side chain and inner side chain, and are attached to the outer side chain and inner side chain. By fixing, it is possible to provide a curved conveyor excellent in assembling workability and mass productivity capable of simply attaching the transport band.

According to invention of Claim 6 , in addition to the effect of any one of Claims 1 thru | or 3 , it has the following effects.
(1) Even if the angle and distance of each unit member is changed in accordance with the movement of the outer peripheral side chain and the inner peripheral side chain by overlapping the fixing portion and the stepped portion between the adjacent unit members, they are adjacent to each other. There is no gap between the unit members, even small objects can be reliably transported without dropping, and operation that can prevent the transport object and foreign matter from getting caught and entering the mechanism. A curved conveyor with excellent reliability and maintainability can be provided.

According to invention of Claim 7 , in addition to the effect of any one of Claims 1 thru | or 3 , it has the following effects.
(1) Scrape off the transport plate while smoothly moving the flight with both ends fixed to the outer chain and inner chain by the end fixing part along the curvature of the outer frame and inner frame. Therefore, it is possible to provide a curved conveyor excellent in the reliability and stability of the operation capable of transporting the conveyed product.

Plane schematic diagram of the curve conveyor in the first embodiment Front schematic diagram of the curve conveyor in the first embodiment Fig. 1 is a schematic cross-sectional view of the main part of the AA line in Fig. 1. BB line principal part cross-sectional schematic diagram of FIG. Side surface schematic diagram of outer periphery side take-up mechanism of curve conveyor in embodiment 1 Fig. 1 is a schematic cross-sectional view of an essential part of the CC line in Fig. 1. DD cross-sectional schematic diagram of the main part of FIG. (A) The outer periphery side guide part which guides the outer periphery side chain of the curve conveyor in Embodiment 1 on the upper side of an outer periphery frame (b) The outer periphery which guides the outer periphery side chain of the curve conveyor in Embodiment 1 in the lower side of an outer periphery frame Side guide part (c) Inner circumference side guide part for guiding the inner circumference side chain of the curve conveyor in the first embodiment on the upper side of the inner circumference frame (d) Inner circumference side chain of the curve conveyor in the first embodiment Inner side guide that guides under the frame (A) Partial plane schematic diagram of the conveyance belt of the curve conveyor in the second embodiment (b) Partial enlarged side schematic diagram of the conveyance belt of the curve conveyor in the second embodiment Side surface schematic diagram of main part of curve conveyor in embodiment 3 (A) EE arrow cross-sectional schematic diagram of FIG. 10 (b) FF line cross-sectional schematic diagram of FIG. 11 (a)

Hereinafter, a curved conveyor according to an embodiment of the present invention will be described with reference to the drawings.
(Embodiment 1)
FIG. 1 is a schematic plan view of a curved conveyor according to the first embodiment, and FIG. 2 is a schematic front view of the curved conveyor according to the first embodiment.
1 and 2, 1 is the curved conveyor in the first embodiment in which the conveyance path is curved in an arc shape, 2 is the outer peripheral frame of the curved conveyor 1 formed in a semicircular arc shape, 2a is the side cover of the outer peripheral frame 2, 2b is an upper cover of the outer peripheral frame 2, 3 is an inner peripheral frame of the curved conveyor 1 formed in a semicircular arc shape and disposed opposite to the outer peripheral frame 2, 3a is a side cover of the inner peripheral frame 3, and 3b is an inner cover It is an upper cover of the peripheral frame 3.
In FIG. 2, 4 is a support leg for supporting the important points of the outer frame 2 and the inner frame 3, 4a is a caster disposed at the lower end of the support leg 4, and 5 is a curve using a motor with a speed reducer. It is a drive part of the conveyor 1.

Next, the mechanism part of the curve conveyor in Embodiment 1 is demonstrated.
3 is a schematic cross-sectional view of the main part of the AA line in FIG. 1, and FIG. 4 is a schematic cross-sectional view of the main part of the line BB in FIG.
In FIG. 3, reference numeral 6 denotes a drive shaft that is rotatably supported on one end side in the longitudinal direction of the outer peripheral frame 2 and the inner peripheral frame 3, and is driven by the drive unit 5, and 6 a is respectively attached to the outer peripheral frame 2 and the inner peripheral frame 3. A bearing portion that is disposed and rotatably supports both ends of the drive shaft 6, 7 a is a large-diameter outer peripheral drive-side sprocket disposed on the outer peripheral frame 2 side of the drive shaft 6, and 7 b is an inner peripheral frame of the drive shaft 6. This is a small-diameter inner peripheral drive side sprocket disposed on the side 3.
In FIG. 4, 8 is an outer peripheral driven shaft that is pivotally supported on the other end side in the longitudinal direction of the outer peripheral frame 2, and 8 ′ is a pivotable shaft on the other end side in the longitudinal direction of the inner peripheral frame 3. The supported inner peripheral driven shaft 8a is disposed on the outer peripheral frame 2 and the inner peripheral frame 3, respectively, and is a bearing portion that rotatably supports the outer peripheral driven shaft 8 and the inner peripheral driven shaft 8 '. A large-diameter outer peripheral driven-side sprocket disposed on the side driven shaft 8, 9 b is a small-diameter inner peripheral driven-side sprocket disposed on the inner peripheral-side driven shaft 8 ′, and 9 c is an outer peripheral-side driven shaft 8 and an inner peripheral side. A fixed plate for fixing the outer peripheral driven sprocket 9 a and the inner peripheral driven sprocket 9 b at the end of the driven shaft 8 ′, and 15 an outer periphery for holding the outer peripheral driven shaft 8 slidably along the curvature of the outer frame 2. The side take-up mechanism 17 has the inner peripheral driven shaft 8 'as the curvature of the inner peripheral frame 3. A inner peripheral side take-up mechanism for slidably holding me.
The details of the outer peripheral side take-up mechanism 15 and the inner peripheral side take-up mechanism 17 will be described later.

3 and 4, 10a is a large pitch outer peripheral side chain wound between the outer peripheral driving side sprocket 7a and the outer peripheral driven side sprocket 9a, and 10b is an inner peripheral driving side sprocket 7b and an inner peripheral driven side sprocket 9b. Reference numeral 20 denotes a small pitch inner peripheral side chain wound between the outer peripheral side chain 10a and the inner peripheral side chain 10b.
The outer diameters of the outer peripheral drive side sprocket 7a, the inner peripheral drive side sprocket 7b, the outer peripheral driven side sprocket 9a, and the inner peripheral driven side sprocket 9b should be appropriately selected according to the curvature of the outer peripheral frame 2 and the inner peripheral frame 3, respectively. Can do. Moreover, the pitch of the outer peripheral side chain 10a and the inner peripheral side chain 10b can also be appropriately selected according to the curvature of the outer peripheral frame 2 and the inner peripheral frame 3.
As shown in FIGS. 3 and 4, the upper cover 2 b of the outer peripheral frame 2 and the upper cover 3 b of the inner peripheral frame 3 are formed in a substantially U-shaped cross section and cover both side ends of the transport band 20 in the width direction. Arranged. Thereby, the conveyed product conveyed by the conveyance belt | band | zone 20 can be prevented from falling from the side part of the conveyance belt | band | zone 20, and it is excellent in the reliability of conveyance. In addition, foreign matter such as a conveyed product or dust can be prevented from entering the inside of the mechanism portion, and the mechanism portion can be protected, and the operation stability, maintenance performance, and safety are excellent.

Next, details of the outer peripheral side take-up mechanism and the inner peripheral side take-up mechanism of the curved conveyor according to the first embodiment will be described.
In FIG. 4, 15a is an outer bearing holder of the outer take-up mechanism 15 that holds the bearing portion 8a that rotatably supports the outer driven shaft 8, and 15b and 15c are formed above and below the outer bearing holder 15a. The recessed streaks 16a and 16c are arranged on the upper and lower sides of the outer bearing holder 15a so as to guide the outer bearing holder 15a along the curvature of the outer frame 2. Up rails 16b and 16d are formed on outer side take-up rails 16a and 16c, and are projected on the outer side bearing holder 15a to engage with concave parts 15b and 15c, and 17a rotates on the inner side driven shaft 8 '. Inner peripheral side bearing holders 17b and 17c of the inner peripheral side take-up mechanism 17 holding the bearing part 8a that is movably supported are recessed portions formed vertically on the inner peripheral side bearing holder 17a. 8c is a pair of upper and lower inner take-up rails which are disposed above and below the inner peripheral bearing holder 17a and guide the inner peripheral bearing holder 17a along the curvature of the inner peripheral frame 3, and 18b and 18d are inner take-up rails. The ridges are formed on the up rails 18a and 18c and engage with the ridges 17b and 17c of the inner peripheral bearing holder 17a.

FIG. 5 is a schematic side view of the outer periphery side take-up mechanism of the curve conveyor in the first embodiment.
In FIG. 5, 2c is a bottom frame of the outer peripheral frame 2, 2d is an upper frame of the outer peripheral frame 2, 2e is an end frame connecting the bottom frame 2c and the upper frame 2d at an end of the outer peripheral frame 2, and 2f is an end frame. 2e is a support frame that connects the bottom frame 2c and the top frame 2d of the outer peripheral frame 2 at a position spaced apart from the outer frame 2 and supports the outer peripheral take-up rail 16c together with the end frame 2e. The sliding drive portion 19a of the outer peripheral take-up mechanism 15 that slides along the side take-up rails 16a and 16c is turned by the sliding drive portion 19 that has one end fixed to the end frame 2e and expands and contracts in the longitudinal direction. A buckle 19b is an annular portion formed at the other end of the turnbuckle 19a, and 19c is a side of the outer bearing holder 15a at one end. The fixed arm portion, 19d is an annular portion formed on the other end side of the arm portion 19c, and 19e is penetrated through the annular portion 19b of the turnbuckle 19a and the annular portion 19d of the arm portion 19c. It is a rotation fixed shaft which connects the part 19c rotatably within a horizontal surface.

4 and 5, the concave strip portions 15 b and 15 c of the outer peripheral bearing holder 15 a and the convex strip portions 16 b and 16 d of the outer peripheral take-up rails 16 a and 16 c are formed in an arc shape along the curvature of the outer peripheral frame 2. The concave strip portions 17b and 17c of the inner peripheral bearing holder 17a and the convex strip portions 18b and 18d of the inner peripheral take-up rails 18a and 18c are formed in an arc shape along the curvature of the inner peripheral frame 3.
As described with reference to FIG. 5, in the sliding drive portion 19 of the outer periphery side take-up mechanism 15, the turn buckle 19 a and the arm portion 19 c are rotatably connected in the horizontal plane by the rotation fixing shaft 19 e. When the turnbuckle 19a is expanded and contracted, the entire outer periphery side bearing holder 15a together with the arm portion 19c centering on the rotation fixing shaft 19e has the curvature of the ridge portions 16b and 16d of the outer periphery side take-up rails 16a and 16c. Move back and forth while changing (rotating) the angle to follow. Thereby, the position of the outer peripheral side driven shaft 8 can be moved to easily adjust the tension of the outer peripheral side chain 10a.
Although the inner peripheral side take-up mechanism 17 also has a sliding drive unit, it is the same as the sliding drive unit 19 of the outer peripheral side take-up mechanism 15, and therefore the drawings and description thereof are omitted.
Since the outer peripheral side driven shaft 8 and the inner peripheral side driven shaft 8 ′ can be independently slid by the outer peripheral side take-up mechanism 15 and the inner peripheral side take-up mechanism 17, the outer peripheral side chain 10a having different pitches and lengths. In addition, the tension of the inner chain 10b can be adjusted reliably and appropriately, and the operation reliability and stability are excellent.
The outer peripheral side take-up mechanism 15 and the inner peripheral side take-up mechanism 17 are not limited to the present embodiment, and the outer peripheral side driven shaft 8 and the inner peripheral side driven shaft 8 ′ are connected to the outer peripheral frame 2 and the inner peripheral side. Any material that can slide (back and forth) along the curvature of the frame 3 may be used.

Next, the detail of the conveyance belt | band | zone of the curve conveyor in Embodiment 1 is demonstrated.
6 is a schematic cross-sectional view of the main part of the line CC in FIG. 1, and FIG. 7 is a schematic cross-sectional view of the main part of the line DD in FIG.
3, 4, and 6, 11 is a fixing piece (FIG. 3, 4) bent and formed on the inner side of the outer peripheral side chain 10 a and the inner side of the inner peripheral side chain 10 b, and 21 is made of synthetic rubber The concave deformation portion 22a of the flexible deformation portion 22 in which the concave deformation portion 22a and the convex deformation portion 22b are continuously formed in an endless loop shape is arranged at predetermined intervals between the outer peripheral chain 10a and the inner peripheral chain 10b. A plurality of fixing parts (FIGS. 3 and 4), 21a and 21b fixed to the fixing piece 11 are rigid and are formed in a long plate shape, and the front side fixing of the fixing part 21 holding the concave deformation part 22a of the deformation part 22 between the front and back sides. And fixing parts 23 using bolts and nuts for fixing both ends of the front side fixing part 21a and the back side fixing part 21b of the fixing part 21 to the fixing pieces of the outer side chain 10a and the inner side chain 10b with screws. Means.

As shown in FIG. 6, while the transport belt 20 is moving in the horizontal plane, the interval between the adjacent fixing portions 21 is narrowed, and the convex deformation portion 22b is greatly curved and deformed into a waveform. As shown, while the transport belt 20 is moving on the curved surface along the outer peripheral drive side sprocket 10a and the like, the interval between the adjacent fixing portions 21 is widened, and the convex deformed portion 22b is changed to the outer peripheral drive side sprocket 10a and the like. Stretches closer to the curvature. As described above, the convex deformation portion 22b of the flexible deformation portion 22 that connects the adjacent fixing portions 21 expands and contracts (curves) according to the interval between the adjacent fixing portions 21, so that the entire transport belt 20 is the outer peripheral frame. 2 and the inner peripheral frame 3 can move smoothly along the curvature.
In the present embodiment, the deformable portion 22 is formed in an endless loop shape in which the concave deformable portions 22a and the convex deformable portions 22b are alternately continuous. However, the conveyance band 20 is formed by connecting adjacent fixed portions 21 to each other. Therefore, it may be independent (divided) by the concave deformation portion 22a.
Further, the deforming portion 22 (the concave deforming portion 22a and the convex deforming portion 22b) has a difference in curvature between the outer peripheral frame 2 and the inner peripheral frame 3, a difference in curvature between the outer peripheral driving side sprocket 7a and the inner peripheral driving side sprocket 7b, or the like. What is necessary is just to have the flexibility and the elasticity which can be absorbed, and it may be made of a synthetic resin.

Next, the outer peripheral side guide part and the inner peripheral side guide part for guiding the outer peripheral side chain and the inner peripheral side chain of the curved conveyor in Embodiment 1 will be described in detail.
FIG. 8A shows an outer peripheral side guide portion for guiding the outer peripheral side chain of the curved conveyor in the first embodiment on the upper side of the outer peripheral frame, and FIG. 8B shows the outer peripheral side chain of the curved conveyor in the first exemplary embodiment. FIG. 8 (c) is an inner peripheral side guide portion that guides the inner peripheral side chain of the curved conveyor according to the first embodiment on the upper side of the inner peripheral frame; FIG. 8D shows an inner peripheral side guide portion that guides the inner peripheral side chain of the curved conveyor according to the first embodiment on the lower side of the inner peripheral frame.
8A and 8B, reference numerals 25a and 25b denote a pair of upper and lower outer peripheral side guide portions that are disposed on the outer peripheral frame 2 and guide the outer peripheral side chain 10a along the curvature of the outer peripheral frame 2, and 27a and 27b are outer peripheral portions. It is a rail member made of synthetic resin that is formed in a substantially U-shaped cross section inside the side guide portions 25a and 25b and through which the outer peripheral side chain 10a is inserted.
8C and 8D, reference numerals 26a and 26b denote a pair of upper and lower inner peripheral side guide portions 28a disposed on the inner peripheral frame 3 for guiding the inner peripheral side chain 10b along the curvature of the inner peripheral frame 3, 28a. , 28b are synthetic resin rail members which are formed in a substantially U-shaped cross section inside the inner circumferential guide portions 26a, 26b and into which the inner circumferential chain 10b is inserted.
As the material of the rail members 27a, 27b, 28a, 28b, a polymer resin such as polyethylene or polycarbonate is preferably used. In particular, in the case of carbon fiber reinforced plastic, since it has excellent self-lubrication, Wear is small, no lubricating oil is required, and environmental protection, maintenance, and long life are excellent.

According to the curve conveyor in Embodiment 1 comprised as mentioned above, it has the following effect | actions.
(1) It is wound between a large-diameter outer peripheral drive-side sprocket disposed on the outer peripheral frame side of the drive shaft and a large-diameter outer peripheral driven-side sprocket disposed on the outer peripheral frame side of the driven shaft. A large-pitch outer peripheral side chain, a small-diameter inner peripheral drive-side sprocket disposed on the inner peripheral frame side of the drive shaft, a small-diameter inner peripheral driven-side sprocket disposed on the inner peripheral frame side of the driven shaft, Since it has a small-pitch inner circumferential side chain that is wound between the outer circumferential side chain and inner circumferential side chain, both sides in the width direction of the transport band are fixed to the outer circumferential side chain and inner circumferential side chain. By pulling the belt, the transport belt can be smoothly moved along the outer peripheral frame and the inner peripheral frame curved in an arc shape, and the operation stability is excellent.
(2) Since the left and right ends of the transport belt are fixed to the outer peripheral chain and the inner peripheral chain with different pitches, the centripetal force (force toward the center) unlike conventional curve conveyors is unlikely to act. The transport belt does not meander and can be operated at high speed, and it is not necessary to use bearings to prevent meandering, etc., and the usage environment is not limited, making it easy to install, maintain, and durable It is excellent and can be suitably used for transporting powdered materials such as lime, feed, and fertilizer.
(3) A pair of upper and lower outer peripheral guide portions disposed on the outer peripheral frame for guiding the outer peripheral chain along the curvature of the outer peripheral frame, and an inner peripheral chain disposed on the inner peripheral frame along the curvature of the inner peripheral frame. Since the upper and lower inner peripheral side guide portions are guided, the outer peripheral side chain and the inner peripheral side chain that pull the transport belt can be reliably and smoothly moved along the curvature of the outer peripheral frame and the inner peripheral frame, Excellent operational stability and low noise.
(4) An outer periphery in which the driven shaft is separated into an outer peripheral driven shaft on the outer peripheral frame side and an inner peripheral driven shaft on the inner peripheral frame side, and the outer peripheral driven shaft is slidably held along the curvature of the outer peripheral frame. Side take-up mechanism and inner circumference side take-up mechanism that holds the inner circumference driven shaft slidably along the curvature of the inner circumference frame. On the other hand, by independently sliding the outer peripheral side driven shaft and the inner peripheral side driven shaft, the tension of the outer peripheral side chain and the inner peripheral side chain can be properly adjusted, and the stability and reliability of the operation, Excellent maintainability.
(5) An outer peripheral side bearing holder having a bearing portion in which the outer peripheral side take-up mechanism rotatably supports the outer peripheral side driven shaft, and an outer peripheral side bearing holder disposed on the upper and lower sides of the outer peripheral side bearing holder, and the curvature of the outer peripheral frame. The outer periphery side take-up rail is guided along the outer periphery side bearing holder, and the outer periphery side bearing holder is slid along the outer periphery side take-up rail. By sliding along the rail, the outer peripheral driven shaft can be moved along with the curvature of the outer peripheral frame together with the bearing portion, the tension of the outer peripheral chain can be adjusted easily and reliably, and tension adjustment Excellent workability and reliability.
(6) An inner peripheral side bearing holder in which an inner peripheral side take-up mechanism is disposed above and below the inner peripheral side bearing holder, and an inner peripheral side bearing holder having a bearing portion that rotatably supports the inner peripheral side driven shaft. With an inner peripheral side take-up rail that guides the inner peripheral frame along the curvature of the inner peripheral frame and a sliding drive unit that slides the inner peripheral side bearing holder along the inner peripheral side take-up rail. By sliding the inner bearing holder along the inner take-up rail, the inner peripheral driven shaft can be moved along with the curvature of the inner frame along with the bearing portion. Can be easily and reliably adjusted, and the workability and reliability of tension adjustment are excellent.
(7) By having a rail member made of synthetic resin formed in a substantially U-shaped cross section inside the outer peripheral side guide portion and the inner peripheral side guide portion and through which the outer peripheral side chain and the inner peripheral side chain are inserted, the outer peripheral side chain and Friction between the inner chain and the rail member can be reduced, temperature rise and noise can be suppressed, operation stability is excellent, high-speed operation is possible, and the outer chain and inner chain are worn. Difficult, long life and excellent maintainability.
(8) Since the rail member made of synthetic resin is disposed inside the outer peripheral side guide portion and the inner peripheral side guide portion, only the worn rail member can be replaced, and excellent in resource saving and maintenance.
(9) Since the rail member in contact with the outer peripheral side chain and the inner peripheral side chain is made of a synthetic resin, it is not necessary to use a lubricating oil, it can be used in a dry state, and the application is not limited, Excellent maintainability and versatility.
(10) The conveyance belt wound around and pulled around the outer peripheral side chain and the inner peripheral side chain is formed in a rigid and long plate shape, and is arranged at intervals in the longitudinal direction of the conveyance path. Since there are a plurality of fixing portions fixed to the outer peripheral side chain and the inner peripheral side chain at the portion, the transport band, the outer peripheral side chain and the inner peripheral side chain can be easily fixed by the fixing portion. The transport belt can be reliably pulled by the circumferential chain, and the operation is highly reliable.
(11) Since the conveyance band has a flexible deformation part (concave deformation part and convex deformation part 22b) that connects adjacent fixing parts, the conveyance band is pulled by the outer peripheral side chain and the inner peripheral side chain. When the deformed part (convex deformed part) is deformed, the entire transport band is curved so as to follow the curvature of the outer peripheral frame and the inner peripheral frame, and a load is applied to the outer peripheral chain, the inner peripheral chain, the transport band, and the like. It can move smoothly without putting on, and has excellent durability and operational stability.
(12) The deformed portion of the transport band is formed in an endless loop shape, and the fixed portion is formed in an endless loop shape by having a front side fixed portion and a back side fixed portion that sandwich the deformed portion (concave deformed portion) between the front and back sides. The main part of the deformed part (concave deformed part) is held between the front side fixing part and the back side fixing part according to the pitch of the outer peripheral side chain and inner peripheral side chain, and is simply fixed to the outer peripheral side chain and inner peripheral side chain. In addition, the transport band can be attached, and it is excellent in assembly workability and mass productivity.

(Embodiment 2)
The curve conveyor in Embodiment 2 is demonstrated. In addition, about the thing similar to Embodiment 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.
FIG. 9A is a partial plan schematic diagram of the conveyance belt of the curve conveyor in the second embodiment, and FIG. 9B is a partial enlarged side schematic diagram of the conveyance belt of the curve conveyor in the second embodiment.
In FIG. 9, the conveyance band 20a of the curve conveyor in the second embodiment is different from the conveyance band 20 of the curve conveyor 1 in the first embodiment in the essential points of the flexible deformation portion 22 formed in an endless loop shape. Instead of disposing the fixing portion 21 on the (deformed deformable portion 22a) and fixing it to the fixing piece 11 such as the outer peripheral chain 10a, the transport band 20a is divided into a plurality of unit members 22A, and each unit member 22A is A fixed portion 22a 'which is formed in a rigid and long plate shape and is fixed to the fixing pieces 11 of the outer peripheral side chain 10a and the inner peripheral side chain 10b at both ends, and extends in the direction opposite to the advancing direction of the fixed portion 22a'. The fixing portion 22a ′ and the step portion 22b ′ of the adjacent unit members 22A are superposed.
The curve conveyor according to the second embodiment is obtained by using this conveyance band 20a instead of the conveyance band 20 of the curve conveyor 1 according to the first embodiment.

The curved conveyor according to the second embodiment configured as described above has the following actions in addition to the actions (1) to (9) of the first embodiment.
(1) The transport belt is divided into a plurality of unit members, and each unit member is formed in a rigid and long plate shape, and has fixing portions fixed to the outer peripheral side chain and the inner peripheral side chain at both ends. Therefore, each unit member can be simply fixed to the outer peripheral side chain and the inner peripheral side chain, and the assembly workability is excellent.
(2) Since the transport band is divided into a plurality of unit members, and each unit member is fixed to the outer peripheral side chain and the inner peripheral side chain at the fixing portions at both ends, the outer peripheral side moves along the transport path. In accordance with the movement of the chain and the inner peripheral side chain, each unit member can follow by changing the angle and distance, and is excellent in operation reliability and stability.
(3) Each unit member has a fixed portion and a stepped portion extending on the opposite side of the moving direction of the fixed portion, and the fixed portion and the stepped portion between adjacent unit members are superposed. Therefore, even if the angle and distance of each unit member changes according to the movement of the outer peripheral side chain and the inner peripheral side chain, there is no gap between adjacent unit members, and a minute conveyance object However, it can be reliably transported without being dropped, and can be prevented from biting in objects to be transported or foreign matter or entering into the mechanism portion, and is excellent in operational reliability and maintainability.

(Embodiment 3)
The curve conveyor in Embodiment 3 is demonstrated. In addition, about the thing similar to Embodiment 1 or 2, the same code | symbol is attached | subjected and description is abbreviate | omitted.
10 is a schematic side view of the main part of the curved conveyor according to the third embodiment, FIG. 11 (a) is a schematic cross-sectional view taken along the line EE of FIG. 10, and FIG. 11 (b) is FIG. FIG.
10 and 11, 1a is the curved conveyor in the third embodiment, 3c is the bottom frame of the inner peripheral frame 3 (FIG. 11A), and 3d is the upper frame of the inner peripheral frame 3 (FIG. 11A). , 12a is a bottom plate of the conveyance path provided between the bottom frame 2c of the outer peripheral frame 2 and the bottom frame 3c of the inner peripheral frame 3, and 12b is an upper frame 2d of the outer peripheral frame 2 and an upper frame 3d of the inner peripheral frame 3. The upper cover 13a is supported between the outer peripheral side guide portions 25a and 25b (13a) and 13b is supported on the inner peripheral guide portions 26a and 26b. The inner periphery side guide support portion (FIG. 11A), 30 is a plurality of flights arranged at intervals in the longitudinal direction of the transport path, 31 is a metal such as stainless steel or iron, polyethylene or polypropylene, etc. An end fixing part of the flight 30 which is formed in a substantially L shape with a synthetic resin and fixed to the outer chain 10a and the inner chain 10b by fixing means 23 using bolts and nuts, 32 is made of stainless steel, iron or the like It is formed in the shape of a long plate of metal or synthetic resin such as polyethylene or polypropylene, and both ends in the longitudinal direction are fixed to the left and right end fixing portions 31 by fixing means 23a using bolts and nuts, and the outer peripheral side chain 10a and inner periphery It is the conveyance board of the flight 30 standingly arranged in the outer peripheral direction of the side 10b chain.

As shown in FIGS. 10 and 11, in the curved conveyor 1a according to the third embodiment, when the flight 30 moves on the bottom plate 12a side, the outer peripheral side guide is arranged so that the end surface 32a of the conveying plate 32 is parallel to the surface of the bottom plate 12a. The portions 25a and 25b and the inner peripheral side guide portions 26a and 26b are arranged. As a result, the flight 30 can transport the transported object placed on the bottom plate 12 a of the transport path by scraping the transported object with the transport plate 32.
In the present embodiment, the end fixing portion 31 and the conveying plate 32 are fixed by the fixing means 23a using bolts and nuts. However, depending on the material to be used, the end fixing portion 31 and the conveying plate 32 may be joined by means such as adhesion, welding, or welding. it can. Further, the end fixing portion 31 and the conveying plate 32 can be integrally formed from the beginning.
In this embodiment, the flight 30 is arranged so that the bottom plate 12a and the conveyance plate 32 are orthogonal to each other. However, the angle formed by the bottom plate 12a and the conveyance plate 32 can be selected as appropriate, and the conveyance plate 32 is bent. Alternatively, it may be formed by bending. Further, a part of the conveying plate 32 or the entire conveying plate 32 is formed of an elastic member such as synthetic rubber, and the conveying plate 32 is bent or curved by bringing the front end portion (end surface 32a side) of the conveying plate 32 into contact with the bottom plate 12a. You may do it. This is because a gap is hardly generated between the bottom plate 12a and the conveyance plate 32 of the conveyance path, and even a minute conveyance object such as a granular material can be efficiently conveyed. In addition, a buffer member formed partially or entirely of synthetic rubber or the like may be attached to the contact surface of the transport plate 32 with the transported object to protect the transported object.

According to the curved conveyor in the third embodiment configured as described above, in addition to the actions (1) to (9) in the first embodiment, the following actions are provided.
(1) A plurality of flights arranged at intervals in the longitudinal direction of the conveyance path are fixed to the outer peripheral side chain and the inner peripheral side chain, and to the outer periphery connected to the end fixing portion. Because it has a long plate-shaped transport plate standing in the outer peripheral direction of the side chain and inner peripheral side chain, the outer periphery side chain and inner peripheral side chain can be fixed easily and reliably by the end fixing part. It can be moved smoothly along the curvature of the frame and the inner peripheral frame and can be transported by scraping it with a transport plate, which is excellent in operational reliability and stability.

  The present invention can smoothly move the transport belt and the flight along the curve, can easily and surely adjust the tension, has excellent operation stability and low noise, and performs high speed operation. Can be used, and there is no need for a bearing to prevent meandering, the usage environment is not limited, no lubricant is used, it can be used in a dry state, and it has excellent maintainability and durability. It can be used suitably for transporting powdered materials such as lime, feed, fertilizer, etc., is not limited in its use, can provide a curved conveyor with excellent versatility, reduces work man-hours in factories, etc., and saves labor Can contribute to the improvement of production efficiency and environmental protection.

1, 1a Curve conveyor 2 Outer frame 2a Side cover 2b Top cover 2c, 3c Bottom frame 2d, 3d Top frame 2e End frame 2f Support frame 3 Inner frame 3a Side cover 3b Top cover 4 Support leg 4a Caster 5 Drive part 6 Drive shaft 6a, 8a Bearing part 7a Outer peripheral drive side sprocket 7b Inner peripheral drive side sprocket 8 Outer peripheral side driven shaft 8 'Inner peripheral side driven shaft 9a Outer peripheral driven side sprocket 9b Inner peripheral driven side sprocket 9c Fixed plate 10a Outer peripheral side Chain 10b Inner peripheral side chain 11 Fixed piece 12a Bottom plate 12b Upper lid 13a Outer peripheral side guide support part 13b Inner peripheral side guide support part 15 Outer peripheral side take-up mechanism 15a Outer peripheral side bearing holders 15b, 15c, 17b, 17c Concave parts 16a, 16c Peripheral side take-up rails 16b, 16d, 1 8b, 18d ridge portion 17 inner peripheral side take-up mechanism 17a inner peripheral side bearing holder 18a, 18c inner peripheral side take-up rail 19 sliding drive portion 19a turn buckle 19b, 19d annular portion 19c arm portion 19e rotation fixed shaft 20 , 20a Transport band 21, 22a 'Fixing portion 21a Front side fixing portion 21b Back side fixing portion 22 Deformation portion 22A Unit member 22a Concave deformation portion 22b Convex deformation portion 22b' Step portion 23 Fixing means 25a, 25b Outer peripheral side guide portions 26a, 26b Inner peripheral side guide portions 27a, 27b, 28a, 28b Rail member 30 Flight 31 End fixing portion 32 Conveying plate

Claims (7)

It is a curved conveyor whose conveying path is curved in an arc shape,
An outer peripheral frame, an inner peripheral frame disposed opposite to the outer peripheral frame, a drive shaft pivotally supported on one end side of the outer peripheral frame and the inner peripheral frame, and the outer periphery of the drive shaft A large-diameter outer peripheral drive-side sprocket disposed on the frame side, a small-diameter inner-peripheral drive-side sprocket disposed on the inner peripheral frame side of the drive shaft, and the other end of the outer peripheral frame are rotatable. An outer peripheral side driven shaft that is pivotally supported on the inner peripheral frame, an inner peripheral side driven shaft that is pivotally supported on the other end of the inner peripheral frame, and the outer peripheral side driven shaft that slides along the curvature of the outer peripheral frame. An outer periphery side take-up mechanism for holding the inner periphery side, an inner periphery side take-up mechanism for slidably holding the inner periphery side driven shaft along the curvature of the inner peripheral frame, and the outer periphery of the outer periphery side driven shaft Large-diameter outer peripheral driven sp on the frame side Packet and a large pitch is wound between the small diameter inner peripheral driven sprocket disposed on the inner peripheral frame-side of the inner peripheral side driven shaft, and the outer peripheral driving sprocket and the outer circumferential driven sprocket An outer peripheral side chain, a small pitch inner peripheral side chain wound between the inner peripheral driving side sprocket and the inner peripheral driven side sprocket, and the outer peripheral side chain disposed on the outer peripheral frame. A pair of upper and lower outer peripheral side guide portions for guiding along the curvature of the frame, and a pair of upper and lower inner peripheral side guide portions arranged on the inner peripheral frame for guiding the inner peripheral side chain along the curvature of the inner peripheral frame. And a curve conveyor. The outer peripheral side take-up mechanism includes an outer peripheral side bearing holder having a bearing portion that rotatably supports the outer peripheral side driven shaft, and the outer peripheral side bearing holder is disposed above and below the outer peripheral side bearing holder. An outer peripheral side take-up rail that guides along the curvature of the outer peripheral side bearing holder, and a sliding drive unit that slides the outer peripheral side bearing holder along the outer peripheral side take-up rail,
The inner peripheral side take-up mechanism includes an inner peripheral side bearing holder having a bearing portion that rotatably supports the inner peripheral side driven shaft, and the inner peripheral side bearing disposed above and below the inner peripheral side bearing holder. An inner peripheral take-up rail that guides the holder along the curvature of the inner peripheral frame; and a sliding drive unit that slides the inner peripheral bearing holder along the inner peripheral take-up rail. The curved conveyor according to claim 1. A synthetic resin rail member that is formed in a substantially U-shaped cross section inside the outer peripheral side guide portion and the inner peripheral side guide portion and into which the outer peripheral side chain and the inner peripheral side chain are inserted is provided. The curved conveyor according to claim 1 or 2. Adjacent to a plurality of fixing portions which are rigid and are formed in a long plate shape and are spaced from each other in the longitudinal direction of the conveyance path and are fixed to the outer peripheral chain and the inner peripheral chain at both ends. A flexible deformation portion that connects the fixing portions to each other, and includes a transport belt that is wound around and pulled around the outer peripheral side chain and the inner peripheral side chain. The curve conveyor according to any one of Items 1 to 3. The deformation portion of the transport band is formed in an endless loop shape, and the fixing portion includes a front side fixing portion that sandwiches the deformation portion between the front and back sides, and a back side fixing portion. The described curve conveyor. The unit member is divided into a plurality of unit members, each of the unit members is formed in a rigid and long plate shape, and is fixed to the outer peripheral side chain and the inner peripheral side chain at both ends, and the fixing unit 4. A step part extending in the direction opposite to the advancing direction, and comprising a transport band where the fixing part and the step part of adjacent unit members overlap each other. Curve conveyor according to any one of the above. An end fixing part fixed to the outer peripheral side chain and the inner peripheral side chain, and a long length standing in the outer peripheral direction of the outer peripheral side chain and the inner peripheral side chain connected to the end fixing part. 4. The apparatus according to claim 1, further comprising a plurality of flights having a plate-shaped conveyance plate and arranged at intervals in a longitudinal direction of the conveyance path. 5. Curve conveyor.

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