JP2008184262A - Conveyer and dust collector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a scraper from being damaged when a heavy object dropping from an upper side onto a conveying conveyer strikes the scraper, by contriving a shape of the scraper. <P>SOLUTION: This conveying conveyer 10 for conveying an object such as dust, for example, from a mounting place to a prescribed place is provided with a bottom plate 11 ranging from the mounting place to the prescribed place, and a ladder-like conveyer 12 for moving the object on the bottom plate 11 from the mounting place up to the prescribed place, and the scraper 14 for moving the object drivenly and having a polygonal cross-sectional shape is provided in the ladder-like conveyer 12. The strength of the scraper 14 is enhanced by this constitution, and the scraper is thereby prevented from being damaged by the heavy object dropping from the upper side, without impairing a driven motion function. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a transfer device and a dust remover that can be applied to an automatic dust removal operation of dust accumulated on a screen of a dam intake.

  Specifically, the transport path for transporting the dust scraped up from the screen is provided with an endless drive means that moves from the placement location to a predetermined location, and is provided to drive the dust to this drive means. The shape of the transport unit thus devised can be improved in strength, and the transport unit can be prevented from being damaged by heavy objects falling from above.

  Conventionally, a structure called a screen that is opened in a comb shape has been placed near the intake where water from dams and rivers is taken into the hydroelectric power plant, so that dust such as fallen leaves and driftwood does not enter the facility. Damping.

  Since the dammed dust gradually accumulates on the surface of the screen, a dust remover is usually disposed near the top of the screen and operates to remove the dust. For example, the dust remover is operated so as to automatically operate two to three times a day during normal times and always during water intake.

  Many of these screen dust removers are configured to scrape dust on the water surface by a rake-type scraping device called rake, and to transport (carry out) the dust thus scraped by a conveyor.

  For example, the conveyor that conveys the dust is connected to both the bottom plate constituting the conveyance path, the two drive conveyor chains arranged at both ends in the short direction of the bottom plate, and the two conveyor chains. And a conveying part, and is arranged near the lower part of the upper end of the movable range of the rake. By arranging the transport conveyor in this way, the dust from the upper rake can be naturally dropped and transferred to the transport conveyor. Moreover, in these conveyors, for example, a mountain rope having an L-shaped cross-section is often used for a conveyor unit connected to a driving conveyor chain and driven by a dust for reducing the weight. .

  In this connection, a dust remover as disclosed in Patent Document 1 is disclosed. According to this dust remover, a front apron, which is positioned on the extension of the upper end of the screen and has an inclination angle substantially the same as the screen, is provided on the frame of the dust remover disposed at the upper part of the screen, and on the lower side of the front apron. A dust receiving trough or a dust receiving / carrying conveyor is provided.

  In addition, a dust remover frame is erected on the above-mentioned frame, and a multi-stage dust removing unit in which the rake arm moves up and down on the frame and a wire rope type dust removing unit in which the rake automatically descends are provided along the screen. Can be operated separately by special drive means. By comprising in this way, a dust removal apparatus can be selectively used according to the quality and quantity of the various dust which adheres to a screen.

JP-A-7-197433 (page 3, FIG. 1)

  However, according to the dust remover according to the conventional example, for example, a mountain-shaped rope (angle) is used for the transporting portion of the transporting conveyor that drives the refuse. The Yamagata rope used in the transport unit is connected to the conveyor chain so that one surface is directed upward and the other surface is directed in the traveling direction, and is in an inverted L shape.

  Accordingly, when the dust falls from the upper side and is transferred, the transport unit that hits the dropped dust may not be able to absorb the impact sufficiently and may be deformed. In addition, when transporting the dust placed on the bottom plate, the dust enters the lower part of the opening of the transport unit.For example, when rotating at the end, the transport unit bites the dust and the transport of the transport conveyor stops. There is a risk that the transport section is deformed. In the dust remover shown in Patent Document 1, the same problem is assumed.

  Therefore, the present invention has been created in view of the above-mentioned problems, and devise the shape of the transport unit to prevent the transport unit from being damaged when a heavy object falling on the transport conveyor hits the transport unit from above. Another object of the present invention is to provide a transport device and a dust remover that can minimize the biting of dust by the transport unit.

  The transfer device according to the present invention is a transfer device that transfers an object from a placement location to a predetermined location, and a transfer path from the placement location to the predetermined location and an object on the transfer route from the placement location to the predetermined location. And a non-terminal drive means that moves to the drive means, and the drive means is provided with a conveying section having a polygonal cross-sectional shape for following the object.

  According to the transport apparatus according to the present invention, the transport unit that drives the object on the transport path according to the endless driving means has a polygonal cross-sectional shape. Therefore, since the strength of the transport unit can be improved, it is possible to prevent the transport unit from being damaged by a heavy object falling from above. In addition, compared to the conventional inverted L-shaped transport unit, the object is less likely to enter the lower space, so that the object can be prevented from being caught by the transport unit.

  The dust remover according to the present invention has a scraping device for scraping dust floating on the water surface, the dust scraped up by the scraping device placed on the upper surface, and the dust placed on the upper surface from the placement place to a predetermined position. In a dust remover including a transport device that transports to a place, the transport device is a non-terminal type that moves a transport path from a placement location to a predetermined location and a dust on the transport route from the placement location to a predetermined location. Drive means, and the drive means is provided with a conveying section having a polygonal cross-sectional shape for following the dust.

  According to the dust remover according to the present invention, the transfer device according to the present invention is applied. Therefore, since the strength of the transport unit can be improved, it is possible to prevent the transport unit from being damaged by a heavy object falling from above. In addition, since dust does not easily enter the lower space, it is possible to prevent the dust from being caught by the transport unit.

  According to the transport apparatus according to the present invention, the transport unit having a polygonal cross-sectional shape for following the object is provided in the endless driving means for moving the object on the transport path from the placement place to the predetermined place. It is what With this configuration, the strength of the transport unit can be improved, so that the transport unit can be prevented from being damaged by heavy objects falling from above without lowering the function of following the object. Thereby, the said conveying apparatus is fully applicable to a dust remover.

  According to the dust remover which concerns on this invention, the conveyance apparatus which concerns on this invention is provided. With this configuration, since the strength of the transport unit can be improved, it is possible to prevent damage to the transport unit due to heavy objects falling from above without lowering the function of following the dust.

  Then, the conveyance apparatus and dust remover as embodiment which concerns on this invention are demonstrated, referring drawings. FIG. 1 is a perspective view showing a configuration example of a mobile dust remover 100 as an embodiment according to the present invention. A mobile dust remover 100 shown in FIG. 1 constitutes an example of a dust remover to which the conveying device of the present invention is applied, and removes dust deposited on the screen 1 of the hydropower station intake.

  The dam structure in which the mobile dust remover 100 is installed includes a dam portion having a predetermined shape, and the upper portion of the dam portion forms a basic slab 8 on a plane. In the lower part of the foundation slab 8, there are a plurality of intake channels from the reservoir to the hydroelectric power plant facility. The screen 1 is installed on the reservoir side of the foundation slab 8 so as to cover the opening of the intake channel. Has been. The screen 1 is installed to be inclined from the bottom of the reservoir to the plane of the foundation slab 8. On the foundation slab 8, the rail 4 is drawn parallel to the horizontal direction of the screen 1. The rail 4 has a length substantially equal to the width of the screen 1 and constitutes a moving path of the mobile dust remover 100.

  As shown in FIGS. 1 and 2, the mobile dust remover 100 includes an operation chamber 2, a traveling wheel 3, a rake device 20, a rake receiving arm 21, a hoisting wire rope 22, an opening wire rope 23, and a hoisting drum 24. The drum 25 for opening, the hopper 30, the apron 31, the transfer conveyor 10 and the drive control system 50 are provided, and the dust removal operation is performed on the entire surface of the screen 1 by automatic operation 2 to 3 times a day in normal times.

  The mobile dust remover 100 includes, for example, four traveling wheels 3 on the bottom surface, and rotates the traveling wheels 3 on the rails 4 to move from the back end to the front end of the screen 1. The traveling wheel 3 is controlled in rotation by a drive control system 50 in the operation room 2.

  Dust 5 made of fallen leaves, driftwood, etc. deposited near the water surface of the screen 1 is scraped up by a rake device 20 that constitutes an example of a scraping device. The rake device 20 includes a main body portion 20a, an openable / closable rake portion 20b, and a wheel 20c, and is operated by a hoisting wire rope 22 and an opening wire rope 23.

  A main body 20 a of the rake device 20 is connected to one end of the winding wire rope 22. The main body 20a moves the surface of the screen 1 in the vertical direction according to the winding length of the winding wire rope 22. In this example, the main body portion 20a is formed by connecting two U-shaped members made of steel or the like, and has a wheel 20c at a portion in contact with the screen 1, and the wheel 20c is rotated on the screen 1 surface. Moving.

  A rake portion 20b is engaged inside the two U-shaped members of the main body portion 20a, and is opened and closed so as to scrape the dust 5 during the scraping operation. The rake portion 20b is formed by combining claw members made of steel or the like into a large comb shape, has fulcrum shafts at both ends, and is engaged with the main body portion 20a. One end portion of the opening wire rope 23 is connected to the rake portion 20b, and opening / closing is operated according to the winding length.

  The winding wire rope 22 and the opening wire rope 23 are connected at the other end to the winding drum 24 and the opening drum 25 shown in FIG. The winding length can be changed. The rotation of the hoisting drum 24 and the opening drum 25 is controlled by the drive control system 50. In this example, two winding wire ropes 22 are connected to both ends of the main body 20a. Accordingly, two hoisting drums 24 are also installed and controlled to rotate in synchronization with each other.

  The rake device 20 that has scraped the dust 5 is guided to the rake receiving arm 21. The rake receiving arm 21 supports and tilts the rake device 20 wound up, and drops and transfers the dust 5 in the rake device 20. The rake receiving arm 21 is formed in a bar shape curved by steel or the like, and the lower end portion is connected to the vicinity of the bottom surface of the operation chamber 2 and tilted toward the operation chamber 2 with the connecting portion as a fulcrum.

  A fitting portion 21 a is formed at the upper end of the rake receiving arm 21. The fitting portion 21a is shaped to fit the wheel 20c of the rake device 20, and a hole portion 21b is opened at a predetermined position of the fitting portion 21a. The hoisting wire rope 22 that connects the main body 20a and the hoisting drum 24 is passed through the hole 21b. The conveyor 10 is disposed at a predetermined position below the rake receiving arm 21.

  The transport conveyor 10 constitutes an example of a transport device, and transports the dust 5 from a placement location, that is, a location where the dust 5 is received from the rake device 20 described above, to a predetermined location, for example, a front end portion of the transport conveyor 10. is there. On both side surfaces of the conveyor 10 in the short direction, hoppers 30 are installed.

  The hopper 30 is constituted by an introduction plate 30 a on the operation chamber 2 side and an introduction plate 30 b on the screen 1 side, and guides the dust 5 falling from the dust device 20 onto the transport conveyor 10. The introduction plates 30a and 30b are arranged so that the upper part is far from the lower part and the lower part is closer. The upper end of the apron 31 is connected to the upper end of the introduction plate 30b.

  The apron 31 is inclined substantially the same as the screen 1 on the outer side of the introduction plate 30b, and moves the rake device 20 up and down on the surface and guides it to the engaging portion of the rake receiving arm 21. Therefore, the introduction plate 30b and the apron 31 are connected to each other in an inverted V shape. The mobile dust remover 100 is configured as described above. Below, the operation example at the time of the dust removal operation of the mobile dust remover 100 will be briefly described.

  2-4 is a figure which shows the operation example (the 1-3) of the mobile dust remover 100. FIG. The dust removal operation by the mobile dust remover 100 shown in FIGS. 2 to 4 includes a scraping process in which the rake device 20 scoops up the dust 5 from the water surface, and a drop in which the scraped dust 5 is transferred from the rake device 20 to the conveyor 10. The transfer process and the unloading process for unloading the debris 5 deposited on the transfer conveyor 10 are classified into the following three cases.

  Here, a case will be described as an example where the mobile dust remover 100 starts the dust removal operation from a state where it is disposed at the back end of the screen 1 and ends the dust removal operation at the front end.

[Scraping process]
In the mobile dust remover 100 in the scraping step shown in FIG. 2, first, the hoisting wire rope 22 is loosened, and the rake device 20 is lowered to the vicinity of the water surface. At this time, before reaching the water surface, the opening wire rope 23 may be pulled to open the rake portion 20b, and then the rake device 20 may be lowered.

  In the rake device 20 lowered to the vicinity of the water surface, the opening wire rope 23 shown in FIG. 2 is loosened, and the rake portion 20b is closed. Thus, the rake device 20 scrapes the dust 5 near the water surface. The rake device 20 in which the dust 5 is scraped is pulled by the hoisting wire rope 22 so as to maintain the state, and is rolled up.

  The rolled up rake device 20 passes through the surfaces of the screen 1 and the apron 31 and reaches the end of the rake receiving arm 21. The reached wheel 20c of the rake device 20 is fitted and fixed to the fitting portion 21a of the rake receiving arm 21 as shown in FIG. In addition, FIG. 3 has shown the arrival state of the rake apparatus 20 in the scraping process. In this example, the rake device 20 is fixed to the rake receiving arm 21 by the tension of the hoisting wire rope 22.

[Drop transfer process]
4, the rake receiving arm 21 to which the rake device 20 is fixed is further pulled by the hoisting wire rope 22 to be tilted to the operation chamber 2 side, and the engaged rake device 20 is tilted. It is made like. The refuse 5 in the tilted rake device 20 is dropped and transferred onto the conveyor 10.

  In the mobile dust remover 100 that has finished the scraping process and the drop transfer process as described above, the rail 4 is on the near side, and in this example, L [m], which is the same distance as the width of the rake device 20 (FIG. 1). Reference) It is moved and controlled to perform the scraping process and the drop transfer process again. Such a process is repeated a plurality of times, and the mobile dust remover 100 that has scraped up the dust 5 on the entire surface of the screen 1 reaches the front end on the rail 4.

[Unloading process]
In this example, a transport container 7 is arranged at the front end of the rail 4 (see FIG. 1). In the mobile dust remover 100 in the carry-out process, the transport conveyor 10 is driven at the end of the rail 4. Then, the unloading operation of the refuse 5 from the transfer conveyor 10 to the transfer container 7 is executed. As described above, the dust removal operation by the mobile dust remover 100 is completed. Below, the structural example of the conveyance conveyor 10 is demonstrated in detail.

  FIG. 5 is a perspective view showing a configuration example of the transfer conveyor 10 as the first embodiment according to the present invention. The conveyance conveyor 10 shown in FIG. 5 conveys (unloads) the dust 5 received from the rake device 20 to the conveyance container 7 shown in FIG.

  The conveyor 10 includes a bottom plate 11 and a ladder conveyor 12 and is disposed between the introduction plates 30a and 30b shown in FIG. Further, in this example, the transfer conveyor 10 is formed such that one end (the right end in FIG. 5) is inclined upward in order to efficiently transfer the dust 5 to the transfer container 7.

  The bottom plate 11 constitutes an example of a conveyance path, and is formed to have a length from the placement place where the garbage 5 is received from the rake device 20 to the tip of the conveyance conveyor 10. The bottom plate 11 is made of steel or the like, for example, in a plate shape having a width of about 1 m and a length of about 8 m.

  The position of the bottom plate 11 is fixed on the upper surface of the conveyor 10. That is, the bottom plate 11 does not rotate and moves the dust plate 5 by sliding it on the upper surface. A ladder-like conveyor 12 is arranged around the bottom plate 11.

  The ladder-like conveyor 12 constitutes an example of an endless driving means, and moves the dust 5 on the bottom plate 11 from the place where the dust 5 is received from the rake device 20 to the tip of the conveyor 10. is there. The ladder-like conveyor 12 includes a conveyor chain 13 and a scraper 14, and moves by moving the garbage 5 on the bottom plate 11.

  The conveyor chains 13 are arranged one by one at both ends in the short direction of the bottom plate 11, and are driven and controlled by the drive control system 50 (see FIG. 1) to rotate around the bottom plate 11. For the conveyor chain 13, for example, an endless chain formed of steel or the like is used. A plurality of scrapers 14 are connected to the conveyor chain 13 at a predetermined arrangement pitch (see FIG. 6).

  The scraper 14 constitutes an example of a transport unit, and causes the dust 5 to follow the rotational movement of the conveyor chain 13. The scraper 14 is formed into a square tube body made of plate steel. Here, the square tubular body refers to a tubular body in which outer ring lines partitioning a quadrangular section are endless. The scraper 14 is connected to two conveyor chains 13 at both ends in the longitudinal direction and is driven by the conveyor chain 13.

  FIG. 6A is a top view illustrating a configuration example of a connecting portion between the conveyor chain 13 and the scraper 14. 6B is a cross-sectional view taken along arrow X1-X1 shown in FIG. 6A.

  Chain members 13c are arranged at a predetermined arrangement pitch on the conveyor chain 13 shown in FIGS. 6A and 6B. The chain member 13c has a fixing portion 13a that protrudes at a right angle from the upper end portion thereof. In this example, two holes 13b for connection are opened in the fixing portion 13a.

  A fixed plate 15 is connected to the fixed portion 13a. The fixed plate 15 is formed in a square plate shape with steel or the like. In the fixing part 15, four hole parts 15b for connection are opened in this example. Two of the holes 15b are opened to the holes 13b with the same diameter and pitch, and the conveyor chain 13 and the fixing plate 15 are firmly connected to each other by a fixing screw 60 and a nut 61.

  The scraper 14 is connected to the remaining two holes 15b opened in the fixing plate 15. A hole 14 b that engages with the hole 15 b is opened on one plane of both ends of the scraper 14, and the fixing plate 15 and the scraper 14 are connected by a fixing screw 60 and a nut 61. In this way, the conveyor chain 13 and the scraper 14 are connected.

  In this example, they are connected to each other via the fixing plate 15. However, the present invention is not limited to this, and a fixing portion 13a is formed at the end of the scraper 14 so as to project a fixing portion. You may make it connect with. The conveyor 10 is configured as described above.

  Hereinafter, the configurations and functions of the scraper 14 according to the present invention and the scraper 40 according to the conventional example will be briefly compared. 7A and 7B are cross-sectional views showing examples of the configuration of the scraper 40 and the scraper 14. 8A and 8B are cross-sectional views showing examples of functions of the scraper 40 and the scraper 14.

  The conventional scraper 40 shown in FIGS. 7A and 8A has an inverted L-shaped cross-sectional shape. The scraper 40 moves on the bottom plate 11 with one surface facing upward and the other surface facing the traveling direction. The lower part and the rear part are opened.

  When the dust 5 is driven using the scraper 40, as shown in FIG. 8A, the dust 5, particularly the end of the driftwood, may enter the lower and rear openings. When the scraper 40 reaches the end of the conveyor 10 in such a state, the scraper 40 bites the driftwood when rotating at the end, and the driftwood cannot be separated well when transferring the garbage 5 to the transport container 7. There is a fear. In such a case, the bitten driftwood may wrap around the lower part of the conveyor 10, and may be entangled with peripheral devices or damage the device.

  In order to solve this problem, in the scraper 14 of the present invention shown in FIGS. 7B and 8B, the outer ring line that divides the cross section is endless. Thereby, when the dust 5 is driven using the scraper 14, as shown in FIG. 8B, the dust 5 does not easily enter the lower surface. Accordingly, even when the dust 5 is moved to the transport container 7 at the end of the bottom plate 11, the dust 5 can be smoothly separated and moved to the transport container 7. Below, the drive control system 50 which controls the mobile dust remover 100 is demonstrated easily.

  FIG. 9 is a block diagram showing a configuration example of the drive control system 50 according to the present invention. The drive control system 50 shown in FIG. 9 includes a traveling wheel drive unit 51, a hoisting drum drive unit 52, an opening drum drive unit 53, a conveyor chain drive unit 54, a position sensor 56, a stacking sensor 57, and a control unit 55. The drive control of a series of dust removal operations of the mobile dust remover 100 is performed in the operation chamber 2.

  The control unit 55 includes a storage unit inside, and stores a driving program related to the dust removal operation of the mobile dust remover 100. The control unit 55 activates a driving program, for example, by receiving an activation command from an operator, and outputs appropriate driving control signals S1 to S4 to each driving unit. For the control unit 55, for example, a computer is used.

  In addition, several types of driving programs stored in the control unit 55 are prepared according to each state such as normal time and water intake, and are selected and started by an operator or the like. The control unit 55 may be provided with a communication function so that an activation command can be input to the control unit 55 from a remote place such as a management building.

  When the drive program is started, the control signal S1 output from the control unit 55 is input to the traveling wheel drive unit 51. For example, a traveling cyclo reducer is used as the traveling wheel drive unit 51 to generate rotational power in accordance with the control signal S1. The traveling wheel drive unit 51 is connected to the rotation shaft of the traveling wheel 3 and moves the mobile dust remover 100 to a predetermined location in accordance with the control signal S1.

  The control signal S2 output from the control unit 55 is input to the hoisting drum drive unit 52. For the hoisting drum drive unit 52, for example, a hoisting cyclo reducer is used. The hoisting drum driving unit 52 is connected to the rotating shaft of the hoisting drum 24 and rotates the hoisting drum 24 according to the control signal S2. The rotated hoisting drum 24 adjusts the length of the hoisting wire rope 22 and operates the vertical position and the like of the rake device 20.

  The control signal S3 output from the control unit 55 is input to the opening drum driving unit 53. For the opening drum driving unit 53, for example, an opening cyclo reducer is used. The opening drum driving unit 53 is connected to the rotation shaft of the opening drum 25 and rotates the opening drum 25 according to the control signal S3. The rotated opening drum 25 adjusts the length of the opening wire rope 23 and operates opening and closing of the rake portion 20 b of the rake device 20.

  The control signal S4 output from the control unit 55 is input to the conveyor chain drive unit 54. For example, a conveyor drive cyclo reducer is used for the conveyor chain drive unit 54. The conveyor chain drive unit 54 is connected to the rotating shaft of the conveyor chain 13 and causes the carry conveyor 10 to carry out a transfer operation according to the control signal S4.

  A position sensor 56 is connected to the controller 55 in order to obtain position information necessary for automatic dust removal operation. The position sensor 56 is provided, for example, on the outer wall of the operation chamber 2, and outputs position information of the mobile dust remover 100 on the rail 4 to the control unit 55. For the position sensor 56, for example, an encoder provided in the traveling wheel drive unit 51 is used.

  Similarly, a stack sensor 57 is connected to the control unit 55. The loading sensor 57 is provided at the upper end of the hopper 30, for example, and monitors the loading amount of the garbage 5 in the hopper 30. The load sensor 57 outputs load information indicating whether or not the accumulated dust 5 has reached the allowable surface of the hopper 30 to the control unit 55. As the loading sensor 57, for example, a CCD sensor is used. In this way, the drive control system 50 is configured. Hereinafter, a series of dust removal operation methods of the mobile dust remover 100 will be described.

  FIG. 10 is a flowchart showing an example of dust removal operation of the mobile dust remover 100. In the mobile dust remover 100, the conveyor 10 (conveying device) according to the present invention is applied. In this example, the dust 5 is scraped up in order from the innermost end of the screen 1 and gradually moved to the near side. To be controlled. All operations of the mobile dust remover 100 are controlled by the drive control system 50.

  Based on these preconditions, the drive control system 50 moves the movable dust remover 100 to the innermost position of the screen 1 in step A1 of the flowchart shown in FIG. The drive control system 50 moves the mobile dust remover 100 by rotating the traveling wheels 3 on the rails 4.

  In step A2, the drive control system 50 first executes a first scraping operation. The drive control system 50 operates the hoisting wire rope 22 and the opening wire rope 23 to cause the rake device 20 to scrape the dust 5. Refer to the description according to FIGS. 2 to 3 for an operation example of the mobile dust remover 100 at this time.

  Next, in step A3, the drive control system 50 executes the fall transfer operation of the dust 5 that has been scraped up. By further pulling the wire rope 22, the drive control system 50 tilts the rake receiving arm 21, tilts the rake device 20 to be engaged, and drops and transfers the dust 5. The dust 5 that has been dropped and transferred falls onto the scraper 14 or the like. For an example of the operation of the mobile dust remover 100 at this time, refer to the description according to FIG.

  When the drop transfer operation is completed, the process proceeds to step A4, and the drive control system 50 determines whether or not the mobile dust remover 100 has reached the end on the near side of the screen 1 (determination 1). This determination 1 is performed by the position information output by the position sensor 56 being read out by the control unit 55 and compared with the position information of the end of the rail 4. In addition to the above-described determination method, the determination 1 may be performed by the control unit 55 determining whether a predetermined number of scraping operations have been performed. The predetermined number of scraping operations can be easily obtained by dividing the horizontal length L ′ of the screen 1 by the horizontal length L of the rake device 20 (see FIG. 1).

  If the result of determination 1 is that the end of the rail 4 has not yet been reached, the process proceeds to step A5, and if it has reached, the process proceeds to step A8. When it progresses to step A8, the drive control system 50 enters into the carrying-out operation | movement of the garbage 5 deposited on the conveyance conveyor 10. FIG.

  When the process proceeds to step A5, the drive control system 50 determines whether or not the dust 5 has accumulated in the hopper 30 to determine whether the scraping operation (step A2) and the drop transfer operation (step A3) can be continued. (Determination 2). This determination 2 is performed when the control unit 55 reads the stacking information output from the stacking sensor 57. For example, the stack sensor 57 outputs a Low signal when the dust 5 has not reached the allowable surface of the hopper 30, and outputs a High signal when the dust sensor 5 has reached. As a result of the determination 2, if the stack sensor 57 outputs a Low signal, the process proceeds to step A6 and the scraping operation and the dropping movement operation are continued. If the loading sensor 57 has output a high signal, the process proceeds to step A7 in order to carry out the garbage 5. When the process proceeds to step A7, the position information of the mobile dust remover 100 at that time is stored in the storage means of the control unit 55.

  When the process proceeds to step A6 to continue the scraping operation and the drop transfer operation, the drive control system 50 rotates the traveling wheel 3 to move the mobile dust remover 100 to the front side by L [m]. If it moves, it will return to step A2 and will also perform a scraping operation | movement and a fall transfer operation | movement.

  When proceeding to Step A7 to proceed to the carry-out operation, the drive control system 50 rotates the traveling wheel 3 and moves the mobile dust remover 100 to the end of the rail 4. If it moves to the edge part of the rail 4, it will progress to step A8.

  In step A <b> 8, the drive control system 50 executes a carry-out operation from the transfer conveyor 10 to the transfer container 7. The drive control system 50 drives the transfer conveyor 10 and carries the garbage 5 out to the transfer container 7. At this time, the duster 5 is driven and transferred by the scraper 14 shown in FIGS. 7B and 8B. When unloading is completed, the process proceeds to step A9.

  In step A9, the drive control system 50 determines whether or not the scraping operation on the entire surface of the screen 1 has been completed (determination 3). This determination 3 can be determined by reading which determination is YES / NO in determination 2 in step A4. As a result of the determination 3, if the determination result of the determination 2 is NO, that is, if the scraping operation on the entire screen 1 is not completed, the process proceeds to step A10.

  When the process proceeds to step A10, the drive control system 50 returns the mobile dust remover 100 to the position stored in step A5. When the mobile dust remover 100 is moved, the process returns to step A4 and the dust removal operation is continued.

  If the result of determination 3 in step A9 is YES, that is, if the scraping operation on the entire surface of the screen 1 is completed, the dust removal operation is terminated. In this way, the dust removal operation by the mobile dust remover 100 can be executed.

  In addition, when it is necessary to continuously perform the dust removal operation by the mobile dust remover 100 during intake of the hydroelectric power plant, the mobile dust remover 100 is further controlled to repeat a series of dust removal operations from Step A1. Is done. In normal times, the dust removal operation is temporarily terminated here.

  Thus, according to the conveyor 10 of the dust remover 100 according to the first embodiment, the ladder 5 moves the dust 5 on the bottom plate 11 from the place where the dust 5 is received from the rake device 20 to the tip of the conveyor 10. The scraper 14 made into the square tube body which drives the garbage 5 to the shape conveyor 12 is provided.

  With this configuration, since the strength of the scraper 14 can be improved, the scraper 14 can be prevented from being damaged by a heavy object falling from above without lowering the function of moving the dust 5. Moreover, since the dust 5 does not easily enter the lower space, the dust 5 can be prevented from being caught.

  FIG. 11 is a sectional view showing a configuration example of a scraper 16 as a second embodiment according to the present invention. As in the scraper 14 described in the first embodiment, the scraper 16 shown in FIG. 11 is connected to the conveyor chain 13 at both ends so that the dust 5 on the bottom plate 11 is driven.

  In this example, the scraper 16 includes an upper surface 16a having a predetermined thickness, a traveling surface 16b, and a closing surface 16c, and an opening on the back side generated by connecting the upper surface 16a and the traveling surface 16b at a substantially right angle is formed by the closing surface 16c. It is formed into a triangular tube that is designed to close.

  FIG. 12 is a sectional view showing an example of functions of the scraper 16. Since the scraper 16 is not opened on the surface and the lower surface opposite to the traveling direction, the dust 5 is less likely to enter the lower surface than the scraper 40 according to the conventional example shown in FIGS. 7A and 8A.

  Thus, according to the scraper 16 according to the second embodiment, a triangular tube having a closed cross-sectional shape of a triangle is formed. With this configuration, the strength of the side surface can be improved, so that the scraper 16 can be prevented from being damaged by a heavy object falling from above. In addition, since the dust 5 is difficult to enter the lower space, it is possible to prevent the dust 5 from being caught by the scraper 16. In addition, the intensity | strength on a diagonal can be improved by having the closed surface 16c.

  In this example, the upper surface 16a and the traveling surface 16b are formed at right angles. However, the present invention is not limited to this. For example, the upper surface 16a may be formed so as to be inclined so that the end in the traveling direction becomes higher. Good.

  The present invention is extremely suitable when applied to dust removal work of dust accumulated on the screen of a dam intake.

1 is a perspective view illustrating a configuration example of a mobile dust remover 100. FIG. It is sectional drawing which shows the operation example (the 1) of the mobile dust remover. It is sectional drawing which shows the operation example (the 2) of the mobile dust remover. It is sectional drawing which shows the operation example (the 3) of the mobile dust remover. It is a perspective view which shows the structural example of the conveyance conveyor 10 as a 1st Example. (A) And (B) is the upper side figure which shows the structural example of the connection part of the conveyor chain 13 and the scraper 14, and X1-X1 arrow sectional drawing. (A) And (B) is sectional drawing which shows the structure of the scraper 40 and the scraper 14. As shown in FIG. (A) And (B) is sectional drawing which shows the function example of the scraper 40 and the scraper 14. As shown in FIG. 2 is a block diagram illustrating a configuration example of a drive control system 50. FIG. 5 is a flowchart illustrating an example of dust removal operation of the mobile dust remover 100. It is sectional drawing which shows the structural example of the scraper 16 as a 2nd Example. 3 is a cross-sectional view showing an example of functions of the scraper 16. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Screen, 2 ... Operation room, 3 ... Traveling wheel, 4 ... Rail, 5 ... Garbage, 7 ... Transport container, 10 ... Transport conveyor, 11 ... Bottom plate, 12 ... ladder conveyor, 13 ... conveyor chain, 14, 16, 40 ... scraper, 15 ... fixed plate, 20 ... rake device, 21 ... rake receiving arm, 22 ... Wire rope for hoisting, 23 ... Wire rope for opening, 24 ... Drum for hoisting, 25 ... Drum for opening, 30 ... Hopper, 31 ... Apron, 50 ... Drive control system, 51: traveling wheel drive unit, 52 ... winding drum drive unit, 53 ... opening drum drive unit, 54 ... conveyor chain drive unit, 55 ... control unit 56 ... Position sensor, 57 ... Loading sensor, 60 ... fixing screws, 61 ... nut, 100 ... mobile dust collector

Claims (3)

In a transport device that transports an object from a placement location to a predetermined location,
A transport path from the installation place to a predetermined place;
An endless driving means for moving the object on the conveyance path from the installation location to a predetermined location, and
2. A transport apparatus according to claim 1, wherein the drive means is provided with a transport section having a polygonal cross-sectional shape for following the object. A lifting device that sweeps up the dust floating on the water surface;
The dust scraped up by the scraping device is placed on the top surface;
In a dust remover provided with a transport device that transports the dust placed on the upper surface from a placement location to a predetermined location,
The transfer device
A transport path from the installation place to a predetermined place;
The endless drive means for moving the dust on the conveyance path from the above-mentioned installation place to a predetermined place, and
The dust remover according to claim 1, wherein the driving means is provided with a conveying section having a polygonal cross-sectional shape for following the dust. The transport unit is
The dust remover according to claim 2, wherein the dust remover forms a triangular or square tube.

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