JP3216993U - Bucket elevator and bucket elevator bucket - Google Patents

Abstract

A bucket elevator capable of improving the scraping performance of a highly adhesive conveying material is provided. A bucket includes a first flat plate portion and a second flat plate portion that are continuously arranged in a substantially tangential direction so as to gradually open from both ends of a bottom curved portion that is curved in a circular arc with a certain curvature at a bottom predetermined range. , And can be rotated around the position of the center of curvature of the bottom curved portion 21, and extends across the entire width of the bottom curved portion 21. Scraper device 30 provided with three scraper blades 31 each having an equiangular interval composed of a substantially U-shaped frame comprising a portion 31a and side portions 31b, 31b extending in the direction of the rotation center parallel to the side plates 24, 25. It has. [Selection] Figure 2

Description

  The present invention relates to a bucket elevator and a bucket for a bucket elevator.

  Conventionally, when a highly adhesive material is conveyed using a bucket elevator, there is a problem that a part of the conveyed material remains in the bucket when the bucket is reversed.

  For this reason, a scraper device (Patent Document 1; FIG. 3) is configured such that the rack provided on the bucket elevator and the gears at both ends of the support shaft mesh with each other and the scraper is rotated along the inner surface of the bottom of the bucket to scrape the conveyed material. (A)), a bucket having a double bottom structure and utilizing the elasticity of the upper base so that the conveying material is flipped off when reversing (Patent Document 2; FIG. 3B), a bucket passing on the return path side The bucket elevator (Patent Document 3; Fig. 3 (C)), which is designed to inject cleaning water toward the door, attaches a square bar slightly shorter than the bucket width with a chain, and attaches so that the square bar slides down on the inner surface during reversal. A bucket (Patent Document 4: FIG. 3 (D)), etc. that scrapes off the surface has been proposed.

JP-A-56-70206 Japanese Patent Laid-Open No. 8-58942 JP-A-9-118419 JP-A-10-194422

  Although these conventional techniques can exhibit a temporary effect, it cannot be said that the certainty with respect to scraping of the conveying material is sufficient.

  Therefore, an object of the present invention is to improve the scraping performance of a highly adhesive conveying material in a bucket elevator.

The bucket elevator according to the present invention, which has been made to achieve the above object, has a large number of predetermined intervals with respect to an endless chain wound around an upper chain wheel and a lower chain wheel in a casing having a material input port. It comprises a main body portion attached with a bucket, and by driving the endless chain, the conveying material input from the material input port is scooped up by the bucket, and is configured to be discharged from the discharge port at the top of the casing, Further, the present invention has the following configuration.
(1A) The bucket includes a first flat plate portion and a second flat plate portion that are continuously arranged in a tangential direction so as to gradually open from both ends of a bottom curved portion in which a predetermined range of the bottom portion is curved in an arc shape with a certain curvature. It is provided with a bucket body having one end opening by closing a side surface with a side plate.
(1B) A scraper device is attached in the bucket body so as to be rotatable around a position that is the center of curvature of the bottom curved portion.
(1C) The scraper device is located on the outside of the bucket main body, a scraper blade, a boss portion for axially supporting the side plate, a support shaft fitted to the boss portion, and the bucket body. And a gear fixed to the support shaft.
(1D) A scraper driving device that rotates the scraper blades by rotating a gear of the scraper device to a position where the opening of the bucket is inverted downward to discharge the conveying material from the discharge port is provided. about.

  According to the bucket elevator of the present invention, when the conveying material is discharged from the discharge port by inverting the bucket in the casing, the scraper driving device operates the scraper device and rotates the scraper blade in the bucket. Here, by configuring the bucket body as shown in (1A) and attaching the scraper device as shown in (1B), it is possible to make the scraper blade substantially in contact with the bottom curved portion and the side plate. As a result, the conveying material adhering to the bucket can be surely scraped off by the rotation of the scraper blade.

Here, the bucket elevator according to the present invention may further include the following configuration.
(2) The scraper device includes a plurality of scraper blades at equal angular intervals.

  By providing the configuration (2) as well, it is possible to more reliably scrape the conveyed material by the rotation of the plurality of scraper blades.

Moreover, the bucket elevator of the present invention may further include the following configuration.
(3) A substantially U-shaped frame comprising a horizontal portion extending over the entire width of the bottom curved portion, and a side portion extending from both ends of the horizontal portion in parallel to the side plate toward the center of rotation. Consist of the body.

  By providing the configuration (3), the dead angle in the bucket can be minimized regardless of the position of the scraper blade, and the scooping performance of the conveying material, which is the original function, is impaired. There is no. Such actions and effects are particularly effective when a plurality of scraper blades are provided.

Furthermore, the bucket elevator according to the present invention may further include the following configuration.
(4) The scraper driving device includes a large number of operating claws installed at predetermined intervals with respect to an endless chain wound around a pair of chain wheels, and the operating claws are located at an installation position of the scraper driving device. The scraper device has been moved so that it can engage with the gear teeth of the scraper device, and is attached so as to protrude perpendicularly toward the outside with respect to the chain. Means for transmitting power to and from the upper chain wheel of the main body portion are provided.

  With the configuration (4), the scraper driving device can be driven by the driving source of the main body. In other words, the scraping operation by the scraper device can be automatically executed while the conveying material scooping operation by the bucket is being executed. Further, the power source is shared by the main body portion and the scraper driving device, and the equipment cost can be reduced.

A bucket elevator bucket of the present invention made to achieve the above object has one end opening attached to an endless chain installed in the casing of the bucket elevator, and has the following configuration. It is characterized by being.
(5) Provided with a first flat plate portion and a second flat plate portion that are substantially tangentially opened so as to gradually open from both ends of a bottom curved portion that is curved in an arc shape with a constant curvature at the bottom, and is side-faced by a side plate. Inside the closed bucket main body, a horizontal portion that is rotatable around a position that becomes the center of curvature of the bottom curved portion, and extends across the entire width of the bottom curved portion, and the side plate from both ends of the horizontal portion And a scraper device including a plurality of scraper blades each having an equiangular interval and formed of a substantially U-shaped frame body including a side surface portion extending in the direction of the rotation center in parallel with the horizontal axis.

  According to the bucket elevator bucket of the present invention, the scraper blade can be substantially in contact with the bottom curved portion and the side plate. As a result, the transport material adhering to the bucket can be surely scraped off by the rotation of the plurality of scraper blades. In addition, since the frame is configured by a substantially U-shaped frame, the blind spot in the bucket can be minimized regardless of the position of the scraper blade.

Here, the bucket elevator bucket according to the present invention may further include the following configuration.
(6) The scraper blade has a configuration in which an inclining inclined portion is interposed between a boss portion that joins the scraper device to a side plate of the bucket body and the side surface portion.

  By providing the configuration (6) as well, a gap is formed between the boss portion and the side plate. As a result, the conveying material scraped off by the scraper blade can be released from the gap, and the rotational performance of the scraper device can be stabilized.

  ADVANTAGE OF THE INVENTION According to this invention, in a bucket elevator, the scraping performance of the conveyance material with high adhesiveness can be improved.

The bucket elevator of Example 1 is shown, (A) is structure explanatory drawing of the whole structure, (B) is an enlarged view of the part enclosed with the dashed-two dotted line, (C) is the enlarged view of the part enclosed with the dotted line. The bucket of Example 1 is shown, (A) is a perspective view, (B) is a side view, (C) is a side view showing the internal structure, (D) is a side view of the scraper device, and (E) is a cross section of the scraper. FIG. 4F is a cross-sectional view showing the assembled state of the bucket and the scraper. It is explanatory drawing of a prior art.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated based on an Example.

  As shown in FIGS. 1A and 1B, the bucket elevator 1 according to the embodiment has a large number of endless chains 4 wound between an upper chain wheel 2 and a lower chain wheel 3 at a predetermined interval. Are installed so that the lower chain wheel 3 is suspended in a free state with respect to the casing 6, and is inserted from the material inlet 7 at the lower part of the casing. A motor 9 for driving the endless chain 4 is provided so that the transported material is picked up by the bucket 5 and discharged from the discharge port 8 at the upper part of the casing. The power of the motor 9 is transmitted to the upper chain wheel 2 by the power transmission chain 10.

  In each bucket 5, as shown in FIGS. 2A to 2C, a bottom curved portion 21 in which a predetermined range at the bottom is curved in an arc shape with a constant curvature, and gradually from both ends of the bottom curved portion 21. The first flat plate portion 22 and the second flat plate portion 23 that are continuous in a substantially tangential direction so as to open, and the cross-sectional shape is generally a bell shape as a whole, and the side plates 24 and 25 close the side surface, thereby opening one end opening. The bucket main body 20 is configured. As shown in FIGS. 2A and 2B, each bucket 5 is joined to an endless chain 4, 4 configured in parallel with two rows by bolting via a first flat plate portion 22. Yes.

  Further, as shown in FIGS. 2A to 2F, a scraper device 30 is attached in the bucket body 20 so as to be rotatable around a position that is the center of curvature of the bottom curved portion 21. Yes. The scraper device 30 includes three scraper blades 31, 31, 31 arranged at equal intervals of 120 degrees, boss portions 32, 32 for axially supporting the side plates 24, 25, and a boss portion Support shafts 33a and 33b fitted to 32 and 32, and a gear 34 fixed to the outer end of one support shaft 33a are provided.

  As shown in FIGS. 2E and 2F, each scraper blade 31 includes a horizontal portion 31a extending over the entire width of the bottom curved portion 21 of the bucket 5, and side plates 24 and 25 from both ends of the horizontal portion 31a. It is configured as a substantially U-shaped frame comprising side portions 31b and 31b extending in the direction of the rotation center in parallel and inclined portions 31c and 31c joining the side portions 31b and 31b and the boss portions 32 and 32. 2 (F), the horizontal portion 31a and the side portions 31b and 31b of the scraper blade 31 are arranged such that the outer ends of the scraper blade 31 are in contact with the bottom curved portion 21 of the bucket body 20 and the inner surfaces of the side plates 24 and 25, respectively. The dimensions are such that a slight gap is left. The inclined portions 31c and 31c are inclined so as to be constricted away from the side plates 24 and 25. As a result, gaps 41 and 41 are formed between the boss portions 32 and 32 and the side plates 24 and 25.

  The bucket elevator 1 according to this embodiment operates the scraper device 30 by rotating a gear 34 located outside one side plate 24 of the bucket 5 as shown in an enlarged view in FIGS. A scraper driving device 50 is provided. The scraper driving device 50 is installed at a position where the opening of the bucket 5 is inverted downward in order to discharge the conveying material from the discharge port 8.

  The scraper driving device 50 includes a pair of chain wheels 51, 52, an endless chain 53 wound around the chain wheels 51, 52, and a number of operating claws 54, 54 installed at predetermined intervals with respect to the chain 53. , ... are provided. The operating claws 54, 54,... Have a length capable of meshing with the teeth of the gear 34 of the bucket 5 that has moved to the installation position of the scraper driving device 50, and project at right angles toward the outside with respect to the chain 53. It is attached so that it will be in the state.

  Further, as shown in FIG. 1B, a power transmission chain 55 is mounted between the upper chain wheel 51 of the scraper driving device 50 and the upper chain wheel 2 for driving the bucket. Thus, the scraper driving device 50 is automatically powered while the bucket driving motor 9 is driving the bucket elevator.

  According to the bucket elevator 1, when the bucket 5 is inverted in the casing 6 and the transport material is discharged from the discharge port 8, the scraper driving device 50 operates the scraper device 40, and the scraper blade 31 is moved in the bucket 5. Rotate. Since the scraper blade 31 is substantially in contact with the bottom curved portion 21 and the side plates 24 and 25, the conveying material adhering to the bucket 5 is reliably scraped by the three scraper blades 31, 31, and 31. Can be dropped. In addition, since the scraper blade 31 is composed of a substantially U-shaped frame, the dead angle in the bucket can be minimized regardless of the position of the scraper blade 31 and the conveying material is scooped up. There is no loss of performance. Further, since the scraper driving device 50 is also driven by the motor 9, the scraping operation by the scraper device 40 is surely executed while the conveying material scooping operation is being performed, and a separate motor or the like is required for that purpose. Therefore, the equipment cost can be reduced. In addition, since the scraper blades 31 are provided with inclined portions 31c, c that are constricted, a gap 41 is formed between the boss portions 32, 32 and the side plates 24, 25, and the conveying material is removed from the gap. 41, and the rotational performance of the scraper device 40 can be stabilized. Thus, according to the present embodiment, in the bucket elevator, it is possible to improve the scraping performance of the conveyance material having high adhesiveness.

  As mentioned above, although the Example of this invention was described, this invention is not limited to this, It can implement variously within the range which does not deviate from the summary.

  For example, a dedicated motor may be provided for driving the scraper driving device 50.

  The present invention can be used for a material conveying apparatus.

  DESCRIPTION OF SYMBOLS 1 ... Bucket elevator, 2 ... Upper chain wheel, 3 ... Lower chain wheel, 4 ... Endless chain, 5 ... Bucket, 6 ... Casing, 7 ... Material input Mouth, 8 ... discharge port, 9 ... motor, 10 ... power transmission chain, 20 ... bucket body, 21 ... bottom curved portion, 22 ... first flat plate portion, 23 .... 2nd flat plate part, 24, 25 ... side plate, 30 ... scraper device, 31 ... scraper blade, 31a ... horizontal part, 31b ... side part, 31c ... inclined part, 32 ... Boss part, 33a, 33b ... Support shaft, 34 ... Gear, 41 ... Gap, 50 ... Scraper driving device, 51,52 ... Chain wheel, 53 ... Chain 54 ... Actuation claw.

Claims (6)

A main body portion having a large number of buckets attached at predetermined intervals to an endless chain installed in a casing provided with a material input port, and transported from the material input port by driving the endless chain. A bucket elevator characterized in that the material is scooped up by the bucket and discharged from an outlet at the top of the casing, and further has the following configuration.
(1A) The bucket includes a first flat plate portion and a second flat plate portion that are continuously arranged in a tangential direction so as to gradually open from both ends of a bottom curved portion in which a predetermined range of the bottom portion is curved in an arc shape with a certain curvature. It is provided with a bucket body having one end opening by closing a side surface with a side plate.
(1B) A scraper device is attached in the bucket body so as to be rotatable around a position that is the center of curvature of the bottom curved portion.
(1C) The scraper device is located on the outside of the bucket main body, a scraper blade, a boss portion for axially supporting the side plate, a support shaft fitted to the boss portion, and the bucket body. And a gear fixed to the support shaft.
(1D) A scraper driving device that rotates the scraper blades by rotating a gear of the scraper device to a position where the opening of the bucket is inverted downward to discharge the conveying material from the discharge port is provided. about. The bucket elevator according to claim 1, further comprising the following configuration.
(2) The scraper device includes a plurality of scraper blades at equal angular intervals. The bucket elevator according to claim 1 or 2, further comprising the following configuration.
(3) A substantially U-shaped frame comprising a horizontal portion extending over the entire width of the bottom curved portion, and a side portion extending from both ends of the horizontal portion in parallel to the side plate toward the center of rotation. Consist of the body. The bucket elevator according to any one of claims 1 to 3, further comprising the following configuration.
(4) The scraper driving device includes a large number of operating claws installed at predetermined intervals with respect to an endless chain wound around a pair of chain wheels, and the operating claws are located at an installation position of the scraper driving device. The scraper device has been moved so that it can engage with the gear teeth of the scraper device, and is attached so as to protrude perpendicularly toward the outside with respect to the chain. Means for transmitting power to and from the upper chain wheel of the main body portion are provided. A bucket elevator bucket having one end opening attached to an endless chain installed in a casing of the bucket elevator and having the following configuration.
(5) Provided with a first flat plate portion and a second flat plate portion that are substantially tangentially opened so as to gradually open from both ends of a bottom curved portion that is curved in an arc shape with a constant curvature at the bottom, and is side-faced by a side plate. Inside the closed bucket main body, a horizontal portion that is rotatable around a position that becomes the center of curvature of the bottom curved portion, and extends across the entire width of the bottom curved portion, and the side plate from both ends of the horizontal portion And a scraper device including a plurality of scraper blades each having an equiangular interval and formed of a substantially U-shaped frame body including a side surface portion extending in the direction of the rotation center in parallel with the horizontal axis. The bucket elevator bucket according to claim 5, further comprising the following configuration.
(6) The scraper blade has a configuration in which an inclining inclined portion is interposed between a boss portion that joins the scraper device to a side plate of the bucket body and the side surface portion.