JP4894280B2 - Scraper equipment - Google Patents

Description

  The present invention relates to a scraper device that is provided in the vicinity of a belt conveyor and guides an object to be conveyed conveyed by the belt conveyor to the outside of the belt conveyor using a scraper plate.

  2. Description of the Related Art Conventionally, a belt conveyor is known as an apparatus that continuously conveys a bulk material such as ore, gravel, or coal, or a bulk material such as a box or a bag along a certain route. This belt conveyor is configured by an endless belt being stretched between a driving roller and a driven roller, and is configured to move the belt by rotating the driving roller with a motor or the like. Then, by mounting the above-described loose article or umbrella on the moving belt, the loose article or umbrella can be moved together with the belt and continuously transported for a certain distance.

  On the other hand, in the industry that uses a plurality of types of materials, if a belt conveyor is provided for each type of material, the number of belt conveyors increases and the equipment becomes larger, so a plurality of types of materials can be transported by a single belt conveyor. Done. For each material conveyed by the belt conveyor, a storage facility such as a bucket or another conveyor (hereinafter referred to as “bucket”) determined for each type is prepared on the side of the belt conveyor and placed on the belt conveyor. When the conveyed material reaches the corresponding bucket, the material is dropped into the bucket from the belt conveyor so that a plurality of types of materials can be conveyed by the single belt conveyor.

Here, it is known that the material carried on the belt conveyor is scraped off using a scraper plate (see, for example, Patent Document 1), and is conveyed by the belt conveyor using such a scraper plate. A scraper device has been developed that drops a transported object into a bucket provided on the side of the belt conveyor. In this scraper device, a pedestal is provided above the belt conveyor so as to be movable up and down, and a scraper plate that crosses the belt conveyor at a predetermined angle with respect to the traveling direction of the belt conveyor when the cradle is lowered is fixed to the gantry. Yes. In this scraper device, when the cradle is lowered and the scraper plate is traversed on the belt conveyor, the object to be transported that moves on the belt conveyor is guided to the scraper plate having a predetermined angle in the moving direction. Then, it is guided to the side of the belt conveyor in the traveling direction, discharged from the side edge of the belt conveyor to the side, and can be dropped into the bucket corresponding to the material to be conveyed.
Japanese Patent Laid-Open No. 7-251416 (scraper of specification [0006], reference numeral 12 in FIG. 1)

However, if the material to be transported is a loose material such as ore, gravel, or coal, the material to be transported is relatively hard, so that the scraper plate that guides them to the outside of the belt conveyor is worn. Arise. When the scraper plate fixed to the pedestal is worn and a gap is generated between the scraper plate and the belt conveyor, there is a problem that the object to be conveyed flows downstream from the gap beyond the scraper plate. In addition, when the material to be conveyed flows downstream beyond the scraper plate, it may be dropped into a bucket or the like in the other material by the scraper plate on the downstream side that scrapes off other materials from the belt conveyor, It is desired to effectively prevent a situation in which the material to be transported flows downstream from the scraper plate.
An object of the present invention is to provide a scraper device that can prevent a gap from being generated between a scraper plate and a belt conveyor even if the scraper plate is worn.
Another object of the present invention is to provide a scraper device capable of preventing the object to be conveyed from passing through the scraper plate and being conveyed downstream.

As shown in FIG. 1, the invention according to claim 1 includes a gantry 16 provided above the belt conveyor 11 so as to be movable up and down, and a traveling direction of the belt conveyor 11 when the gantry 16 is lowered. Improvement of a scraper device including a main scraper plate 22 that guides a material to be transported 12 that moves across the belt conveyor 11 and moves on the belt conveyor 11 at a predetermined angle. It is.
The characteristic configuration includes a support plate 22a in which the main scraper plate 22 is a metal plate, and a resin plate 22b laminated on the support plate 22a, and upwards in the moving direction of the belt conveyor 11 of the gantry 16 upward. A plurality of protruding vertical shafts 16a are formed, and the support plate 22a constituting the main scraper plate 22 is fitted into the plurality of vertical shafts 16a so that the main scraper plate 22 can move up and down along the vertical shaft 16a. The main scraper plate 22 is mounted on the gantry 16 so that the lower end of the main scraper plate 22 comes into contact with the upper surface of the belt conveyor 11 by its own weight when the gantry 16 is lowered. .

  In the scraper device according to the first aspect, the main scraper plate 22 is provided on the mount 16 so as to be movable up and down, and its lower surface is brought into contact with the upper surface of the belt conveyor 11 by its own weight. When wear occurs, the main scraper plate 22 is lowered by its own weight due to the worn amount, thereby preventing a gap from being formed between the main scraper plate 22 and the belt conveyor 11. As a result, it is possible to effectively avoid a situation in which the conveyed object 12 flows downstream from the gap beyond the main scraper plate 22.

The invention according to claim 2, wherein an invention according to item 1, the main scraper plate 22 of the belt conveyor 11 moving downstream side in the main scraper plate 22 in parallel with the auxiliary scraper plate 23 is provided, an auxiliary scraper plate 23 includes an auxiliary support member 23a and an auxiliary resin plate 23b attached to a portion of the auxiliary support member 23a facing the main scraper plate 22. The auxiliary support member 23a has a plurality of mounting shafts 23c protruding upward. The plurality of mounting shafts 23 c are formed so as to be vertically movable through the mount 16, and the mounting shaft 23 c falls off the mount 16 at the upper end portion of the mounting shaft 23 c that passes through the mount 16 from below to above. large-diameter portion 23d is formed to prevent the auxiliary scraper plate 23 so that the lower end by its own weight when lowering the rack 16 comes into contact with the upper surface of the belt conveyor 11 The auxiliary scraper plate 23 is placed on the belt conveyor 11 with the lower end in contact with the upper surface of the belt conveyor 11, and the object to be conveyed 12 passing through the main scraper plate 22 is placed on the belt conveyor 11. It is configured to guide the side in the traveling direction.
In the scraper device for the belt conveyor according to the second aspect, even if the transported object 12 flows downstream beyond the main scraper plate 22, it is provided on the downstream side of the main scraper plate 22. Since the auxiliary scraper plate 23 is placed on the belt conveyor 11 and guides the conveyed object 12 passing through the main scraper plate 22 to the side of the belt conveyor 11 in the traveling direction, the conveyed object 12 and the main scraper plate 22 are auxiliary. It is possible to effectively avoid a situation in which the gas flows over both sides of the scraper plate 23 to the downstream side.

In the scraper device for a belt conveyor of the present invention, the main scraper plate is composed of a support plate which is a metal plate and a resin plate laminated on the support plate, and protrudes upward in the moving direction upstream of the belt conveyor of the gantry. A plurality of vertical shafts are formed, and a support plate constituting the main scraper plate is fitted into the plurality of vertical shafts so that the main scraper plate can be moved up and down along the vertical axis, and the main scraper is lowered when the base is lowered. Since the main scraper plate can be moved up and down on the gantry so that the lower end of the plate comes into contact with the upper surface of the belt conveyor by the weight of the main scraper plate, if the main scraper plate wears, the main scraper plate Is lowered by its own weight to prevent a gap from being generated between the main scraper plate and the belt conveyor. Thus, it is possible to effectively avoid a situation in which the object to be conveyed flows from the gap beyond the main scraper plate to the downstream side.
Also, an auxiliary scraper plate is provided in parallel with the main scraper plate on the downstream side of the belt conveyor in the moving direction of the belt scraper plate, and the auxiliary scraper plate is attached to the auxiliary support member and a portion of the auxiliary support member facing the main scraper plate. The auxiliary support member is formed with a plurality of mounting shafts that protrude upward, and the plurality of mounting shafts are provided so as to be movable up and down through the gantry and penetrate the gantry from below to above The upper end portion of the mounting shaft is formed with a large-diameter portion that prevents the mounting shaft from falling off the mount , and the auxiliary scraper plate is placed on the belt conveyor with the lower end of the auxiliary scraper plate contacting the upper surface of the belt conveyor. If the transported object passing through the main scraper plate is guided to the side of the belt conveyor in the traveling direction, the transported object will pass downstream of the main scraper plate. Even if a situation occurs such that the auxiliary scraper plate rests on the belt conveyor and guides the object to be conveyed passing through the main scraper plate to the side of the belt conveyor 11 in the traveling direction, the object to be conveyed is It is possible to effectively avoid a situation in which the gas flows to the downstream side beyond both the scraper plate and the auxiliary scraper plate.

Next, the best mode for carrying out the present invention will be described with reference to the drawings.
As shown in FIG. 4, the scraper device 10 of the present invention guides the article 12 to be transported by the belt conveyor 11 to the outside in the traveling direction of the belt conveyor 11 using a scraper plate 21 described later. . The belt conveyor 11 is configured by an endless belt 11c being stretched between a driving roller 11a and a driven roller 11b. The belt 11c is moved by rotating the driving roller 11a with a motor or the like (not shown). It is comprised so that the to-be-conveyed object 12 mounted on can be conveyed. A plurality of support rollers 11d are provided at predetermined intervals in the longitudinal direction on the lower surface of the upper belt 11c on which the article to be transported 12 is actually placed, and the belt 11c resulting from the article to be transported 12 being placed thereon. Configured to prevent sagging.

  FIG. 4 illustrates a case where two belt conveyors 11 and 11 are arranged in an L shape. In order to simplify the explanation, in FIG. 4, the upstream belt conveyor 11 is shown in a side view, and the downstream belt conveyor 11 is shown in a top view. A hopper 13 is provided on the upstream end of the belt conveyor 11 on the upstream side, where the article to be conveyed 12 is introduced and the article to be conveyed 12 is placed on the belt conveyor 11. On the other hand, a plurality (four in FIG. 4) of scraper devices 10 of the present invention are provided on the belt conveyor 11 on the downstream side at a predetermined interval. On the other hand, on the side of the belt conveyor 11 where the scraper device 10 is provided, a bucket 14 is provided for each material conveyed by the belt conveyor 11, and the material carried on the belt conveyor 11 is transferred to it. The scraper device 10 of the present invention is provided to drop the material from the belt conveyor 11 into the bucket 14 when the corresponding bucket 14 is reached.

  In FIG. 4, the bucket 15 is also provided at the downstream end of the belt conveyor provided with the four scraper devices 10, and is not dropped outward by any scraper device 10, and reaches the downstream end. The transported object 12 that has reached is configured to fall into the bucket 15 by its own weight when the belt 11c reaches the drive roller 11a and is turned back. In this way, a single belt conveyor 11 can transport a plurality of types of materials corresponding to the number of scraper devices 10, and it is unnecessary to provide a belt conveyor 11 for each type of material. Is prevented from becoming large.

  As shown in FIGS. 1 to 3, the scraper device 10 of the present invention includes a gantry 16 provided above a belt conveyor 11 so as to be movable up and down, and a scraper plate 21 provided on the gantry 16. In this embodiment, a gate-like member 17 straddling the belt conveyor 11 is provided, and three crank members 19 (one crank member in FIGS. 1 and 2 and two in FIG. The cradle 16 is provided so as to be movable up and down via a crank member. If it demonstrates concretely, the rotating shaft 19a is provided in the direction which crosses the belt conveyor 11 above the belt conveyor 11 via the base 19b in the gate-shaped member 17. FIG. Center portions of the crank member 19 are attached to both ends of the rotating shaft 19a, and the crank member 19 is pivotally supported by the gate-like member 17 with the rotating shaft 19a as a rotation center.

  On the other hand, an air cylinder 18 is attached to the upper part of the gate-like member 17. The projecting shaft 18 a of the air cylinder 18 is provided so as to be able to project and retract with respect to the air cylinder 18 in parallel with the traveling direction of the belt conveyor 11, and the tip of the projecting shaft 18 a is pivotally supported by the upper end of the crank member 19. The mount 16 is pivotally supported at the lower end of the crank member 19. The upstream edge of the gantry 16 is configured to intersect the belt conveyor 11 at a predetermined angle with respect to the traveling direction of the belt conveyor 11 when viewed from above. Then, as shown in FIG. 1, the air cylinder 18 projects its projecting shaft 18 a, so that the crank member 19 rotates in the direction of lowering its lower end with the rotating shaft 19 a as the center of rotation, and is pivotally supported by the lower end of the crank member 19. The gantry 16 is configured to be lowered. On the other hand, as shown in FIG. 2, when the projecting shaft 18 a that protrudes is inserted, the crank member 19 rotates about the rotating shaft 19 a in the direction of raising its lower end, and the gantry 16 pivotally supported by the lower end of the crank member 19. Configured to raise. In this way, the gantry 16 is provided above the belt conveyor 11 so as to be movable up and down.

  As shown in FIGS. 1 and 2, the gantry 16 is provided with a scraper plate 21. The scraper plate 21 in this embodiment is composed of a main scraper plate 22 and an auxiliary scraper plate 23. The main scraper plate 22 is attached to an upstream edge that intersects the traveling direction of the belt conveyor 11 of the gantry 16 at a predetermined angle, and the auxiliary scraper plate 23 is connected to the main scraper plate 22 on the downstream side of the main scraper plate 22. Provided in parallel. The main scraper plate 22 includes a support plate 22a, which is a metal plate, and a resin plate 22b made of ultra-high molecular polyethylene (high moller) laminated on the support plate 22a. A plurality of vertical shafts 16a projecting upward are formed on the gantry 16 on the upstream side in the moving direction of the belt conveyor 11, and a support plate 22a constituting the main scraper plate 22 is fitted into the vertical shaft 16a. Thus, the main scraper plate 22 is attached to the gantry 16 so as to be movable up and down along the vertical axis 16a, and is attached to the upstream edge of the gantry 16, whereby the main scraper plate 22 is attached to the gantry 16 as shown in FIG. Is configured to traverse the belt conveyor 11 at a predetermined angle with respect to the traveling direction of the belt conveyor 11 when descending. As shown in FIG. 1, the main scraper plate 22 is provided on the gantry 16 so that the lower end of the main scraper plate 22 comes into contact with the upper surface of the belt conveyor 11 by the weight of the main scraper plate 22 when the gantry 16 is lowered. Therefore, when the gantry 16 is lowered and the scraper plate 21 is crossed on the belt conveyor 11, as shown by the solid line arrows in FIG. It is configured to be guided by a main scraper plate 22 having a predetermined angle, discharged from the side of the belt conveyor 11 in the traveling direction, and dropped into the bucket 14 corresponding to the material to be conveyed 12. .

  Returning to FIG. 1, the auxiliary scraper plate 23 includes an auxiliary support member 23 a and an auxiliary resin plate 23 b attached to a portion of the auxiliary support member 23 a facing the main scraper plate 22. A plurality of mounting shafts 23c protruding toward the top are formed. The plurality of mounting shafts 23c are provided so as to be movable up and down through the gantry 16, and the upper end portion of the mounting shaft 23c penetrating the gantry 16 from below upward prevents the mounting shaft 23c from falling off the gantry 16. A diameter portion 23d is formed. The auxiliary scraper plate 23 is mounted so as to be movable up and down with respect to the gantry 16 when the mounting shaft 23 c moves up and down with respect to the gantry 16, whereby the auxiliary scraper plate 23 is parallel to the main scraper plate 22 when the gantry 16 is lowered. In addition, the belt conveyor 11 is configured to cross the belt conveyor 11 at a predetermined angle with respect to the traveling direction of the belt conveyor 11. The auxiliary scraper plate 23 is provided on the gantry 16 so that the lower end of the auxiliary scraper plate 23 is brought into contact with the upper surface of the belt conveyor 11 by its own weight when the gantry 16 is lowered, and the lower end of the auxiliary scraper plate 23 is in contact with the upper surface of the belt conveyor 11. Is configured to guide the object to be transported 12 placed on the belt conveyor 11 and passing through the main scraper plate 22 to the side of the belt conveyor 11 in the traveling direction.

  On the other hand, as shown in detail in FIG. 2, the main scraper plate 22 and the auxiliary scraper plate 23 rise together with the gantry 16 when the gantry 16 rises, and the lower ends of both the main scraper plate 22 and the auxiliary scraper plate 23 and the belt conveyor. 11 is formed so that a gap through which the object to be transported 12 can pass is formed between the upper surface of the material 11.

  In the scraper device configured as described above, when a plurality of types of objects to be conveyed 12 are conveyed using the belt conveyor 11, the objects to be conveyed that are carried on the belt conveyor 11 correspond to the buckets 14. At this point, the object to be transported is dropped into the bucket 14 from the belt conveyor 11. As shown in FIG. 1, the dropping into the bucket 14 lowers the gantry 16 through the crank member 19 by projecting the projecting shaft 18 a of the air cylinder, and the lower end of the main scraper plate 22 is moved to the lower end of the main scraper plate 22. This is performed by bringing the belt conveyor 11 into contact with the upper surface of the belt conveyor 11 by its own weight. When the gantry 16 is lowered and the scraper plate 21 is crossed on the belt conveyor 11, as shown by a solid line arrow in FIG. It is guided by the main scraper plate 22 having an angle and discharged from the side of the traveling direction of the belt conveyor 11. Thereby, it can drop into the inside of the bucket 14 corresponding to the material which is the to-be-conveyed object 12. Thereby, it is possible to transport a plurality of types of materials by the single belt conveyor 11.

  On the other hand, when the material to be transported is a loose material such as ore, gravel, or coal, the main scraper plate 22 is worn. However, in the scraper device 10 of the present invention, the main scraper plate 22 is moved up and down on the gantry 16. Since the lower surface of the belt conveyor 11 comes into contact with the upper surface of the belt conveyor 11 due to its own weight, when the main scraper plate 22 is worn, the main scraper plate 22 is lowered by its own weight. It is possible to prevent a gap from being generated between the main scraper plate 22 and the belt conveyor 11. As a result, it is possible to avoid a situation in which the conveyed object 12 flows downstream from the gap beyond the main scraper plate 22.

  Even if a situation occurs in which the object to be transported 12 flows downstream beyond the main scraper plate 22, the scraper device 10 of the present invention has an auxiliary scraper plate 23 provided downstream of the main scraper plate 22. Therefore, the auxiliary scraper plate 23 is placed on the belt conveyor 11 and guides the article 12 to be conveyed passing through the main scraper plate 22 to the side of the belt conveyor 11 in the traveling direction. As a result, it is possible to effectively avoid a situation in which the conveyed object 12 flows downstream beyond both the main scraper plate 22 and the auxiliary scraper plate 23. As a result, the transported object 12 flows downstream beyond the scraper plate 21, and the other types of transported objects are scraped off from the belt conveyor 11 by the downstream scraper device. Can be effectively prevented.

  On the other hand, when the object to be transported that is carried on the belt conveyor 11 is allowed to pass and the object to be transported is dropped into the bucket on the downstream side, the gantry 16 is raised. Then, as shown in detail in FIG. 2, the main scraper plate 22 and the auxiliary scraper plate 23 rise together with the gantry 16, and between the lower ends of both the main scraper plate 22 and the auxiliary scraper plate 23 and the upper surface of the belt conveyor 11. Create gaps in As a result, the transported object 12 passes through the gap and flows downstream of the belt conveyor 11, and is dropped into the bucket 14 corresponding to the type of the transported object by the scraper device 10 or the like provided on the downstream side. Is included.

It is the sectional view on the AA line of FIG. 3 which shows the scraper apparatus of this invention embodiment. It is sectional drawing corresponding to FIG. 1 which shows the state which the scraper of the apparatus raised. It is a top view of the apparatus. It is a conceptual diagram which shows the state in which the apparatus was provided in the conveyor.

Explanation of symbols

11 Belt Conveyor 16 Base 12 Transported Object 22 Main Scraper Plate 23 Auxiliary Scraper Plate

Claims (2)

A base (16) provided above the belt conveyor (11) so as to be movable up and down, and a predetermined position with respect to the advancing direction of the belt conveyor (11) when the base (16) is lowered on the base (16). A main scraper plate that guides the object to be transported (12) that crosses the belt conveyor (11) and moves on the belt conveyor (11) at an angle of (22) a scraper device comprising:
The main scraper plate (22) comprises a support plate (22a) which is a metal plate, and a resin plate (22b) laminated on the support plate (22a),
A plurality of vertical shafts (16a) projecting upward on the upstream side in the moving direction of the belt conveyor (11) of the gantry (16) are formed,
By inserting the support plate (22a) constituting the main scraper plate (22) into the plurality of vertical shafts (16a), the main scraper plate (22) moves up and down along the vertical shaft (16a). Is attached to the pedestal (16) as possible,
The main scraper plate (22) is arranged so that the lower end of the main scraper plate (22) comes into contact with the upper surface of the belt conveyor (11) by the weight of the main scraper plate (22) when the gantry (16) is lowered. A scraper device provided on the gantry (16) so as to be movable up and down. An auxiliary scraper plate (23) is provided in parallel to the main scraper plate (22) on the downstream side of the main scraper plate (22) in the moving direction of the belt conveyor (11).
The auxiliary scraper plate (23) comprises an auxiliary support member (23a) and an auxiliary resin plate (23b) attached to a portion of the auxiliary support member (23a) facing the main scraper plate (22),
A plurality of mounting shafts (23c) projecting upward are formed on the auxiliary support member (23a),
The plurality of mounting shafts (23c) are provided to be vertically movable through the gantry (16),
A large-diameter portion (23d) for preventing the mounting shaft (23c) from falling off the mounting base (16) is formed at the upper end portion of the mounting shaft (23c) penetrating the base (16) from below to above,
The auxiliary scraper plate (23) is provided on the pedestal (16) so that the lower end of the auxiliary scraper plate (23) comes into contact with the upper surface of the belt conveyor (11) by its own weight when the pedestal (16) is lowered, and the lower end is provided on the belt. The auxiliary scraper plate (23) is placed on the belt conveyor (11) while being in contact with the upper surface of the conveyor (11), and the object to be transported (12) passing through the main scraper plate (22) is transferred to the belt conveyor (11). The scraper device according to claim 1, wherein the scraper device is configured to guide the side in the traveling direction of 11).

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