JP4689062B2 - Granular silo transfer device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a conveying device attached to a granular silo for storing granular particles such as asphalt mixture used as a road pavement material.
[0002]
[Prior art]
Conventionally, as a transporting device that receives asphalt composite material manufactured in an asphalt plant from a mixer into a transport bucket, transports it to an asphalt composite silo, and drops it into the composite silo from the upper inlet of the composite silo As shown in FIG. 6, between the material inlet 22 of the composite silo 21 and the mixer M, a guide rail 23 is constructed by connecting horizontal rails 23b and 23c to the upper and lower ends of the vertical rail 23a. The wire bucket 25 connected to the leading end of the conveying bucket 24 mounted on the guide rail 23 is wound by forward and reverse rotation of the winch 26, moved up and down by moving, and horizontally moved, and the rear end of the conveying bucket 24 When a transport pulley 24 is lowered, a movable pulley 27 having a weight W is suspended from a wire rope 28 spanned between the section and the upper part of the composite silo 21. Each horizontal rail 23b which definitive, the movement of at 23c, which was made to perform by using the weight of the weight W is known (the actual fair 4-15772 JP).
[0003]
[Problems to be solved by the invention]
However, in the conventional asphalt composite silo transport device, the required power of the winch 26 increases as the weight W is lifted, which is uneconomical and requires a long wire rope 28 and a number of pulleys R. Therefore, there is a problem that the structure becomes complicated, the operation failure due to the wear tends to occur, the weight W may drop, and the maintenance and inspection become complicated.
[0004]
The present invention has been made in view of the above circumstances, and requires only a small amount of power for the winch for moving the transport bucket, is reliable in operation, has high safety, can be easily inspected, and has a simple structure. An object of the present invention is to provide a transport device for a granular granule silo.
[0005]
[Means for Solving the Problems]
The present invention is characterized by the following points in order to solve the above problems.
That is, the conveying apparatus of the granular material silo according to claim 1 is constructed across the granular material supplying unit and the granular material silo, and the vertical rail along the side portion of the granular material silo, the lower end of the vertical rail A guide rail having a lower horizontal rail extending from the upper part of the vertical rail to an upper material rail of the upper part of the granular silo, and a transport bucket supported by the guide rail. And a winch that winds and unwinds the other end of the wire rope having one end connected to the carrying bucket, and operates the winch to connect the carrying bucket to the powder supply unit and the powder silo. In the conveying device for the granular silo adapted to reciprocate between the guide rails, the conveying rails are respectively disposed at positions corresponding to the upper horizontal rail and the lower horizontal rail of the guide rail. When the bucket returns to the granular material supply unit, it engages with the conveying bucket and forcibly moves it to the granular material supply unit side along the upper horizontal rail and the lower horizontal rail. bucket drive mechanism to free the provided we are moving on the guide rails of the conveying bucket when the bucket drive mechanism is wound around the driving wheel and the driven wheel and the upper horizontal rail of the lower horizontal rails An endless cord-like member having a driving member that is disposed along the upper side and that engages with the conveying bucket, and the driving member is driven by rotating the driving wheel to move the driving member to the upper horizontal It is provided with the rotation drive device which moves to the said granular material supply part side along a rail and the said lower horizontal rail .
[0006]
In this powder silo transport device, the transfer bucket moved to the powder silo material input port by winding the winch, when the powder granule is charged into the powder silo, the winch is fed out. Is moved to the granular material supply unit side. At that time, the bucket drive mechanism on the upper horizontal rail side of the guide rail is operated to forcibly move the transport bucket along the upper horizontal rail to the powder supply unit side. Also, when the transport bucket descends the vertical rail and comes to the lower end, the lower horizontal rail side bucket drive mechanism is activated, and the transport bucket is moved along the lower horizontal rail under the powder supply unit. Force to move to.
[0007]
According to the granular silo conveying apparatus, when the conveying rope is fed out to return to the granular material supplying unit side by the wire rope connected thereto, the conveying buckets on the upper and lower horizontal rails are bucketed. Since it can be forcibly moved to the granular material supply part side by the drive mechanism, the upper and lower horizontal rail parts reliably move the conveying bucket to the granular material supply part side, and the constant speed thereof. And the automatic operation of the transfer device can be performed smoothly.
[0008]
In addition, since this granular silo transport device has a structure in which a cord-like member is wound around the driving wheel and the driven wheel, the bucket driving mechanism that can easily cope with the upper and lower horizontal rails even when it is long is configured. And the structure is simple.
[0009]
According to a second aspect of the present invention, there is provided the carrier silo conveying device according to the first aspect , wherein the bucket driving mechanism includes a driving wheel and a driven wheel formed of a chain wheel, and a cord-like member is wound around the chain wheel. It is a chain that is hung.
In this granular silo conveying apparatus, the conveying bucket is moved more reliably, there is little risk of breakage due to wear and the like, and it is safe, and maintenance and inspection are easy.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a case where a powder silo transport device according to the present invention is applied to a composite silo transport device that stores asphalt composite material will be described with reference to FIGS.
In the figure, 1 is a composite silo (powder granule silo) installed on the gantry 2 and temporarily stores the asphalt composite produced in the adjacent asphalt plant A. . The composite silo 1 is provided with a material input port 3 through which an asphalt composite material is input, and a discharge port 4 having an openable / closable gate 4a at the lower part. Between the asphalt plant A and the composite silo 1, a conveyance bucket 5 that reciprocates between the mixer (powder supply unit) M of the asphalt plant A and the material input port 3 of the composite silo 1 is guided. A guide rail 6 to be moved is installed.
[0011]
The guide rail 6 includes a vertical rail 6a extending in the vertical direction along the side portion of the composite silo 1, and an upper horizontal portion provided horizontally from the upper end of the vertical rail 6a to the material input port 3. A rail 6b and a lower horizontal rail 6c provided horizontally from the lower end of the vertical rail 6a to the lower part of the mixer M are provided. The vertical rail 6a is not limited to a precise vertical shape, and may be slightly inclined.
Further, the guide rail 6 includes a first rail member 6A disposed at a predetermined interval on the left and right (in a direction perpendicular to the paper surface in FIG. 1) with a pair of groove steels facing the groove side, and the first rail member 6A. The position of the vertical rail 6a is shifted to the rear side (right side in FIG. 1) with respect to one rail member 6A, and the upper and lower horizontal rails 6b and 6c are shifted to the upper side and are arranged in parallel. It is comprised with the 2nd rail member 6B which consists of another pair of groove type steel.
[0012]
2 and 3, the transfer bucket 5 is formed in a funnel-like box having an upper opening and an open / close gate 5a at the lower portion, and two pairs of rollers 5b attached to the front and rear and left and right to be rotatable. The front roller 5b is inserted into the groove of the first rail member 6A of the guide rail 6, and the rear roller 5c is inserted into the groove of the second rail member 6B along the guide rail 6. The guide is moved. Furthermore, one end of a wire rope 7 is connected to the front end of the transport bucket 5, and the other end of the wire rope 7 is wound around a guide pulley 8 and then installed on the side of the gantry 2. It is connected to an electric winch (winch) 9 (see FIG. 1).
[0013]
Above the guide rail 6 and above the lower horizontal rails 6b and 6c, the transfer bucket 5 is moved along the guide rail 6 to the mixer M side of the asphalt plant A, and a lower bucket drive mechanism (bucket drive mechanism). B1 and B2 are provided, respectively.
As shown in FIGS. 2 and 3, the upper bucket drive mechanism B1 includes a drive chain wheel (drive wheel) 10a and a driven chain wheel that are positioned at the front and back of the upper horizontal rail 6b and supported by bearings 12a and 12b. (Driven wheels) 10b and 10c, a pair of drive chains (chains) 13 and 13 spanning the drive and driven chain wheels 10a, 10b and 10c, and an electric motor installed on the upper front side of the composite silo 1 ( The chain 17 is wound around a rotation wheel 14), a chain wheel 16 connected to one end of the rotation shaft 15 of the drive chain wheel 10a via a clutch C, and a chain wheel 14a fixed to the output shaft of the motor 14. And a transmission mechanism D.
[0014]
The clutch C is integrally connected to the chain wheel 16 only in the direction in which the drive chain wheel 10a rotates in the arrow direction (see FIG. 3), and in the opposite direction, the clutch C is connected to the chain wheel 16. It is a one-way clutch that allows relative rotation.
A drive member 13b is attached to a connecting piece 13a that connects the pair of drive chains 13 and 13, and the drive member 13b is engaged with an abutting member 18 fixed to the front upper end portion of the transport bucket 5. A drive chain 13 interlocks the transport bucket 5 with the mixer M side. A guide member 19 for guiding the drive chain 13 to a position closer to the driven chain wheels 10b, 10c is provided below the drive chain 13.
[0015]
The lower bucket drive mechanism B2 is supported by the gantry A1 of the asphalt plant A. The upper bucket point is that the position where the driven chain wheel 10b and the guide member 19a of the drive chain 13 are provided is closer to the drive chain wheel 10a. The other elements are the same as the upper bucket drive mechanism B1 except for the difference from the bucket drive mechanism B1. Therefore, the same components as those in the upper bucket drive mechanism B1 are denoted by the same reference numerals, and the description thereof is omitted (FIG. 4).
[0016]
In addition, as shown in FIG. 5, the material silo 1 is in contact with the opening / closing gate 5a of the transfer bucket 5 that has moved to the material charging port 3 as shown in FIG. An operation member 20 for releasing the discharge port 5d of the transport bucket 5 by rotating the counterclockwise in FIG. When the transfer bucket 5 moves to the asphalt plant A side and moves away from the operation member 20, the open / close gate 5a is rotated clockwise by its own weight to close the discharge port 5d.
Instead of the fixed operating member 20, an actuator such as an oil or pneumatic cylinder may be used to forcibly open and close the open / close gate 5a.
[0017]
Next, the operation of the conveyance device for a composite silo configured as described above will be described. When the asphalt mixture is manufactured in the asphalt plant A, the asphalt mixture is charged from the mixer M to the transport bucket 5 that is moved below the asphalt mixture. Thereafter, the electric winch 9 is activated to wind up the other end portion of the wire rope 7, so that the rollers 5 b and 5 c of the transport bucket 5 connected to one end portion of the wire rope 7 are guided to the guide rail 6. Then, after leaving the bottom of the mixer M along the lower horizontal rail 6c, the vertical rail 6a is raised and further moved along the upper horizontal rail 6b to above the material inlet 3 of the composite silo 1.
[0018]
When the transport bucket 5 comes to a position above the material inlet 3, the winding of the winch 9 is stopped at that position and the transport bucket 5 stops. At that time, the operation member 20 comes into contact with the open / close gate 5a. This is rotated counterclockwise to release the discharge port 5 d of the transport bucket 5, so that the asphalt mixture is dropped into the composite silo 1 from the transport bucket 5.
[0019]
When charging of the asphalt mixture is finished in the mixture silo 1, the electric winch 9 feeds the wire rope 7, the clutch C is connected and the motor 14 is rotated, and the upper bucket drive mechanism B1 is operated. The drive chain wheel 10a rotates in the direction of arrow (see FIG. 3), the lower conveyance side of the drive chain 13 moves to the right in FIG. 1 (arrow direction in FIG. 3), and the drive member 13b is for conveyance. The conveying bucket 5 is moved along the upper horizontal rail 6 b of the guide rail 6 to the upper end of the vertical rail 6 a by engaging with the contact member 18 of the bucket 5.
[0020]
When the transport bucket 5 reaches the upper end of the vertical rail 6a, the transport bucket 5 descends due to the feeding of the wire rope 7 by the electric winch 9, and reaches the position on the other end side of the lower horizontal rail 6c. When the transport bucket 5 comes to this position, the lower bucket drive mechanism B2 is operated by the connection operation of the clutch C, and the drive chain 13 is driven in the direction of the arrow by the rotation of the motor 14, and the drive member 13b is brought into contact with the contact member. 18 is engaged to move the transport bucket 5 to below the mixer M (see FIG. 4).
[0021]
Thereafter, in the same manner as described above, the asphalt mixture is repeatedly transported from the asphalt plant A to the mixture silo 1 and then stored in the mixture silo 1.
When the conveying bucket 5 moves on the vertical rail 6a of the guide rail 6, the front roller 5b is guided by the first guide rail portion 6A located on the front side, and the rear roller 5c is moved on the rear side. Since the second guide rail portion 6B located at is moved while being guided, it is moved while being maintained in a substantially horizontal state. Therefore, even if the upper part of the transfer bucket 5 is opened, the asphalt mixture does not spill from the transfer bucket 5.
[0022]
According to the conveying device for the composite silo, the guide rail 6 for guiding and moving the conveying bucket 5 is connected to the upper and lower ends of the vertical rail 6a and is conveyed along the lower horizontal rails 6b and 6c. In addition to moving the bucket 5 to the mixer M side of the asphalt plant A, the lower bucket drive mechanisms B1 and B2 are wound around the drive chain 13 on the drive chain wheel 10a and the driven chain wheels 10b and 10c rotated by the electric motor 14, Since the drive member 13b that engages with the transfer bucket 5 is attached to the drive chain 13, when the transfer bucket 5 is unwound and returned to the mixer M side, the above, The conveying bucket 5 on the lower horizontal rails 6b and 6c is forcibly moved to the mixer M side by the drive chain 13. Door can be.
[0023]
Therefore, in order to return the transport bucket 5 to the mixer M side as in the conventional apparatus, in addition to the wire rope 7 for winding and unwinding the transport bucket 5, the rear end of the transport bucket 5 and the composite silo There is no need to construct a structure in which another wire rope is hung between 1 and a weight is hung on the wire rope, the structure of the apparatus is simple, and maintenance and inspection can be performed easily. Further, the operation is surely performed and the safety is enhanced, and the constant speed of movement of the transport bucket 5 on the guide rail 6 and the lower horizontal rails 6b and 6c is secured, so that the automatic operation of the transport device is performed. It can be done smoothly. Furthermore, since the electric winch 9 needs only power to move the transfer bucket 5, power can be saved.
[0024]
In the transport device for the composite silo of the embodiment, the transport bucket 5 is moved, and the lower bucket drive mechanisms B1 and B2 are wound around the drive chain wheel 10a and the driven chain wheels 10b and 10c. Since the hanging drive chain 13 is used, the operation is surely performed and maintenance and inspection are easy and preferable. However, instead of this, a rope wheel (driving wheel, driven wheel) is wound around this. A wire rope (corrugated member) can be applied, and a hydraulic motor can be used instead of the electric motor 14.
[0025]
Further, the upper and lower bucket drive mechanisms B1 and B2 have a structure in which cable-like members such as chains and wire ropes are wound around drive wheels and driven wheels such as chain wheels and rope wheels. Even if the upper and lower horizontal rails 6b and 6c are long, it is preferable that they can be easily handled. However, the present invention is not limited to this, and the contact member 18 of the conveying bucket 5 may be directly pushed by a rod of a hydraulic cylinder. In the case of a hydraulic cylinder, if the upper and lower horizontal rails are long, a long cylinder is required.
[0026]
The guide rail 6 has the first and second guide rail members 6A and 6B provided at a predetermined interval in the front and rear at the vertical rail 6a, so that the transport bucket 5 is in a substantially horizontal state. Even if the upper part of the transport bucket 5 is open, it is preferable that the asphalt mixture does not spill, but when an opening / closing lid is provided on the upper part of the transport bucket 5, guidance is provided. Either one of the first and second guide rail members 6A and 6B can be omitted from the rail 6. In this case, the rollers 5b and 5c before and after the transport bucket 5 are inserted into the groove of the same guide rail portion, and the transport bucket 5 is guided and moved along the vertical rail 6a while being laid down.
Further, a hydraulically driven winch may be used instead of the electric winch 9.
[0027]
Moreover, in the said embodiment, although the example which applied this invention to the conveying apparatus of the composite silo of an asphalt plant was shown, this invention is not restricted to this, Aggregates, such as sand, gravel, and a filler, are stored. The present invention can be applied to a storage silo transfer device, a cement, and a powder silo transfer device that stores other powder particles.
[0028]
【The invention's effect】
As described above, according to the present invention, the following excellent effects are obtained.
According to the carrier for a granular silo according to claim 1, when the conveying bucket is fed out of the wire rope connected to the bucket and returned to the granular material supply unit side, the guide rail, the lower horizontal rail Can be forcibly moved to the powder supply unit side by the bucket drive mechanism, so that the upper and lower horizontal rails move the transfer bucket to the powder supply unit side. It is performed reliably, the constant speed of the movement is ensured, and the automatic operation of the transfer apparatus can be performed smoothly.
[0029]
In addition to the wire rope for winding and unwinding the transport bucket, as in the conventional device, another wire rope is stretched between the rear end of the transport bucket and the granular silo, Since it is not necessary to suspend the weight, the safety can be improved, the configuration of the apparatus is simple, and maintenance and inspection can be easily performed. Further, since the winch needs only power for moving the transfer bucket, power can be saved.
[0030]
Moreover, according to the conveying apparatus of the granular material silo according to claim 1 , since it has a structure in which a cord-like member is wound around the driving wheel and the driven wheel, it is easy even when the upper and lower horizontal rails are long. Can be constructed, and the structure is simple.
[0031]
According to the granule silo conveying device according to claim 2 , since the chain is wound around the chain wheel, the movement of the conveying bucket can be surely performed with further constant speed, There is little risk of breakage due to wear or the like, and it is safe, and maintenance and inspection can be easily performed.
[Brief description of the drawings]
FIG. 1 is a side view of a granular silo transport device according to an embodiment of the present invention.
FIG. 2 is an enlarged plan view of the upper bucket drive mechanism.
FIG. 3 is an enlarged side view of the same.
FIG. 4 is an enlarged side view of the lower bucket drive mechanism.
FIG. 5 is an open / close operation diagram of the open / close gate of the transfer bucket.
FIG. 6 is a side view of a conventional conveying device for a composite silo.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Compound silo (powder granule silo) 3 Material inlet 5 Transfer bucket 6 Guide rail 6a Vertical rail 6b, 6c Upper, lower horizontal rail 7 Wire rope 8 Guide pulley 9 Electric winch (winch) 10a Drive chain wheel ( Drive wheel)
10b, 10c Driven chain wheel (driven wheel)
13 Drive chain (cord-like member)
13b Drive member 14 Electric motor (rotary drive device)
18 Contact member A Asphalt plant B1, B2 Upper and lower bucket drive mechanism (bucket drive mechanism)
M mixer (powder supply unit)

Claims (2)

A vertical rail extending over the granular material silo and extending along the side of the granular silo, a lower horizontal rail extending from the lower end of the vertical rail to the granular material supply unit, and a vertical rail A guide rail having an upper horizontal rail extending from the upper end of the material silo to the material inlet of the upper part of the granule silo, a transport bucket supported by the guide rail, and the other end of the wire rope having one end connected to the transport bucket. A granular silo conveying apparatus comprising a winch for winding and unwinding and operating the winch to reciprocate the conveying bucket between the granular particle supplying unit and the granular silo. In
At the positions corresponding to the upper horizontal rail and the lower horizontal rail of the guide rail, when the transfer bucket returns to the powder supply unit, the transfer bucket is engaged with the powder bucket. wherein the supply part side along the upper horizontal rail and the lower horizontal rail is moved forcibly, other bucket drive mechanism for the freedom provided we are moving on the guide rails of the conveying bucket when the,
The bucket drive mechanism is wound around a drive wheel and a driven wheel, is disposed along the upper horizontal rail and the lower horizontal rail, and has an endless shape having a drive member that engages with the transfer bucket. And a rotation driving device that drives the cord-like member by rotating the driving wheel to move the driving member to the powder body supply unit side along the upper horizontal rail and the lower horizontal rail. An apparatus for conveying a granular silo, comprising: 2. The granular silo according to claim 1, wherein the bucket drive mechanism is a chain in which a driving wheel and a driven wheel are chain wheels, and the cord-like member is wound around the chain wheel . Conveying device.

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