JP2023064004A - Solid content scraper and drive mechanism replacement method therefor - Google Patents

Abstract

To provide a solid content scraper in which replacement or repair of a rotary drive mechanism such as a driving device and a power transmission mechanism can be easily performed, and a drive mechanism replacement method for the same.SOLUTION: A solid content scraper 1-1, in which a driving device 50 and so on are installed above a water surface near a center of a sedimentation pond 10, scrapes solid contents in the sedimentation pond 10 by turning a turning arm 80 to which a scraper 81 is attached by a main spindle 70 connected to the driving device 50. At a position of the main spindle 70 above a water surface of the sedimentation pond 10, a connection part, which detachably connects the main spindle 70 and the driving device 50 to each other, is provided. Holding means, which holds the main spindle 70 removed from the driving device 50 in the vicinity of a removed position, is installed at a position above the water surface of the sedimentation pond 10.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a solids scraper used to scrape and separate solids in a liquid and a method for replacing its drive mechanism.

Separation of solids from liquids is one of the most important operations not only in sewage, night soil, factory wastewater, and clean water treatment, but also in the production process of factories. It is

This type of solid content scraper has a swivel arm (scraper arm) installed in a sedimentation tank (water tank), and a scraper (scraper arm) that scrapes sediment (solid content) that has settled at the bottom of the sedimentation tank to the swivel arm (scraper arm). A blade, scraping part) is attached, and the sediment scraped by the scraper and the water from which the sediment has been removed are each discharged out of the system.

Among the solids scrapers are center driven suspended solids scrapers, center driven strut solids scrapers, peripheral driven strut solids scrapers, and the like. A center-driven suspended solids scraper is constructed by installing a driving device (motor) near the center of a sedimentation basin, and installing a pivot arm and a scraper on a main shaft suspended from the driving device. The center-driven pillar-type solids scraper is constructed by installing a swivel arm and a scraper in a center cage that is rotationally driven by a driving device attached to the upper part of a pillar erected near the center of the sedimentation tank. Peripheral drive strut-type solid scraper rotates a revolving body such as a corridor that is rotatably supported on a strut erected near the center of the sedimentation tank by a driving device installed near the outer periphery of the sedimentation tank. At the same time, the center cage attached to the revolving body and the revolving arm and scraper attached to the center cage are rotated.

JP-A-7-31806

When replacing or repairing the driving device and its power transmission mechanism in the various conventional raking machines, conventionally, the sedimentation tank is drained and cleaned, and the sedimentation is removed from the driving device and its power transmission mechanism. It was necessary to temporarily support the main shaft, center cage, swivel arm, etc. that hang in the pond at their current positions so that they would not fall, and then replace the drive unit and power transmission mechanism. Therefore, there was a problem that those operations were complicated.

In addition, in a treatment facility where a solid content scraper is not equipped with a backup machine, in the event of emergency damage to the driving device or power transmission mechanism, it is necessary to start by draining the sedimentation tank, which requires prompt replacement and replacement. There was also the problem of not being able to respond to repairs.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a solid content scraper and its drive mechanism remover capable of easily replacing or repairing a rotary drive mechanism such as a drive device or a power transmission mechanism. to provide an alternative method.

In the present invention, a rotary drive mechanism comprising at least a drive device or its power transmission mechanism is installed above the water surface in the vicinity of the center of the water tank, and the rotary member is rotated by the rotary drive mechanism and attached with a scraper. In a solid content scraper arranged in a water tank to scrape up solid content in the water tank by the rotatably driven scraper, the rotating member and the rotation drive are arranged at a position above the water surface of the water tank of the rotating member. A connecting portion for detachably connecting the mechanisms is provided, and holding means for holding the rotating member to be removed from the rotating drive mechanism at the connecting portion near the removed position is installed at a position above the water surface of the water tank. It is characterized by having
According to the present invention, since the rotating member can be held by the holding means installed above the water surface of the water tank, there is no need to perform complicated and time-consuming work such as draining water from the water tank. Also, it becomes possible to easily replace or repair the rotary drive mechanism.
In addition, it is possible to secure a quick maintenance method in the event of emergency damage to the driving device that constitutes the rotary drive mechanism or at a treatment facility that does not have a spare machine.

In addition to the above features, the present invention also provides the solids scraper, wherein the rotary drive mechanism has the drive device, and the rotating member has a main shaft suspended from the drive device. It is a raking machine, and the holding means is configured such that a corridor-side support member installed above the water tank holds the main shaft-side support member at a position above the water surface of the water tank. Characterized by
According to the present invention, since the support member on the corridor side holds the support member on the main shaft side, the main shaft and the like can be positioned above the water surface of the water tank with a simple structure in the centrally driven suspension type solid content scraper. can hold.

In addition to the features described above, the present invention provides that the support member on the main shaft side is configured by a bracket projecting radially outward from the main shaft, and the support member on the corridor side is a steel material or The main shaft is held by temporarily fixing or placing the main shaft side bracket on the corridor side steel member or bracket.
According to the present invention, the support member on the spindle side is composed of a bracket, and the bracket is temporarily fixed to the steel material on the corridor side or the bracket on the corridor side to hold the spindle. can be held at a position above the water surface of the water tank.

According to the present invention, in addition to the features described above, the connection portion connects a flange provided on the drive shaft of the drive device and a flange provided on the main shaft, and the support member on the main shaft side includes By temporarily fixing or placing the enlarged flange portion on the steel material constituting the corridor or the bracket attached to the steel material, the main shaft is characterized by holding.
According to the present invention, since the enlarged flange portion provided on the flange on the spindle side is held by the steel material on the corridor side or the bracket on the corridor side, the structure for holding the spindle is simple and the holding space is small. can do.

Further, in addition to the above features, the present invention is characterized in that the holding means arranges the spindle-side support member on the corridor-side support member, and is arranged between the corridor-side support member and the spindle-side support member. In addition, a space for installing a jack mechanism is provided.
According to the present invention, since the space for installing the jack mechanism is provided, the jack mechanism can be easily installed, whereby the holding position of the main shaft can be easily adjusted in the vertical direction, and the operation of attaching and detaching the rotary drive mechanism can be facilitated. It can be done easily and smoothly.

In addition to the above features, the present invention further provides that the solid content scraper has the rotation drive mechanism installed on the upper part of the support that protrudes from the bottom surface near the center of the water tank, and is rotated by the rotation drive mechanism. The rotating member is a center-driven pillar-type solids scraper or a peripherally-driven pillar-type solids scraper having a center cage installed so as to surround the outer periphery of the pillar, and the holding means is located on the pillar side. The support member holds the support member on the side of the center cage at a position above the water surface of the water tank.
According to the present invention, since the structure is such that the support member on the support column side holds the support member on the center cage side, in the central drive support column type solid content scraper or the peripheral drive support support member type solid content scraper, with a simple configuration, A center cage or the like can be held at a position above the water surface of the water tank.

Further, in addition to the above features, the present invention is characterized in that the holding means has the support member on the center cage side arranged on the support member on the strut side, and the support member on the strut side and the support member on the center cage side are arranged. It is characterized by a configuration in which a space for installing a jack mechanism is provided between them.
According to the present invention, since the space for installing the jack mechanism is provided, the jack mechanism can be easily installed, whereby the holding position of the center cage can be easily adjusted in the vertical direction, and the operation of attaching and detaching the rotation drive mechanism can be easily performed. It can be done more easily and smoothly.

In addition to the features described above, the present invention further includes second holding means for holding the support member on the side of the center cage on the side of the corridor installed above the water tank at a position above the water surface of the water tank. Further, it is characterized by having
According to the present invention, for example, when the corridor is supported on the side of the rotary drive mechanism, even if the rotary drive mechanism is removed, the corridor can be held in a regular position, thereby allowing the rotary drive mechanism to operate. Attachment and detachment work can be performed smoothly.

In addition to the above features, the second holding means of the present invention is such that the corridor side support member is arranged on the center cage side support member, and the center cage side support member and the corridor side support member are arranged on the center cage side support member. A space for installing a second jack mechanism is provided between the support members.
According to the present invention, since the space for installing the second jack mechanism is provided, the second jack mechanism can be easily installed between the support member on the center cage side and the support member on the corridor side. The holding position of the corridor can be easily adjusted in the vertical direction, and the attachment/detachment work of the rotary drive mechanism can be performed more easily and smoothly.

Further, according to the present invention, a rotary drive mechanism comprising at least a driving device or its power transmission mechanism is installed above the water surface in the vicinity of the center of the water tank, and a rotary member is rotated by the rotary drive mechanism and has a scraper attached thereto. In the method for replacing the driving mechanism of a solid content scraper disposed in the water tank and scraping solid content in the water tank by the rotationally driven scraper, the rotating member is held at a position above the water surface of the water tank. a holding step of removing the rotary drive mechanism from the rotary member held in the holding step at a position above the water surface of the water tank; and a rotary member from which the rotary drive mechanism is removed in the removal step. (2) a mounting step of attaching the repaired or replaced rotary drive mechanism at a position above the water surface of the water tank; and a holding release step of releasing the holding.
According to the present invention, the rotating member can be held at a position above the water surface of the water tank. can be easily replaced or repaired.

In addition to the above features, the present invention also provides the solids scraper, wherein the rotary drive mechanism has the drive device, and the rotating member has a main shaft suspended from the drive device. In the raking machine, the holding step is a step of holding the main shaft side support member at a position above the water surface of the water tank on a corridor side support member installed in the upper part of the water tank. Also good.

In addition to the above features, the present invention further provides that the solid content scraper has the rotation drive mechanism installed on the upper part of the support that protrudes from the bottom surface near the center of the water tank, and is rotated by the rotation drive mechanism. The rotating member is a centrally-driven pillar-type solids scraper or a peripherally-driven pillar-type solids scraper having a center cage installed so as to surround the outer periphery of the pillar, and the holding step is performed on the pillar side. The support member may hold the support member on the side of the center cage at a position above the water surface of the water tank.

According to the present invention, it is possible to easily replace or repair a rotation driving mechanism such as a driving device or a power transmission mechanism.

It is a diagram showing an example of a centrally driven suspension type solid content scraper 1-1 installed in a sedimentation tank 10, FIG. 1(a) is a schematic plan view, and FIG. 1(b) is a schematic side cross-sectional view. . FIG. 2(a) is an enlarged schematic cross-sectional view of the main part of the connecting portion between the driving device 50 and the main shaft 70, and FIG. 2(b) is a view taken along line AA in FIG. 2(a). FIG. 3(a) is an enlarged schematic cross-sectional view of the main part of the connecting portion between the driving device 50 and the main shaft 70, and FIG. 3(b) is a view taken along line BB of FIG. 3(a). FIG. 4(a) is an enlarged schematic cross-sectional view of the main part of the connecting portion between the driving device 50 and the main shaft 70, and FIG. 4(b) is a CC arrow view of FIG. 4(a). FIG. 5(a) is an enlarged schematic cross-sectional view of the main part of the connecting portion between the driving device 50 and the main shaft 70, and FIG. 5(b) is a view taken along line DD of FIG. 5(a). 4 is an enlarged schematic cross-sectional view of a main part of a connecting portion between the driving device 50 and the main shaft 70; FIG. 4 is an enlarged schematic cross-sectional view of a main part of a connecting portion between the driving device 50 and the main shaft 70; FIG. 4 is an enlarged schematic cross-sectional view of a main part of a connecting portion between the driving device 50 and the main shaft 70; FIG. FIG. 9(a) is an enlarged schematic cross-sectional view of the main part of the connecting portion between the driving device 50 and the main shaft 70, and FIG. 9(b) is a view taken along line EE of FIG. 9(a). FIG. 2 is a schematic cross-sectional side view showing an example of a center-driven strut-type solids scraper 1-2 installed in a sedimentation tank 10; FIG. 3 is an enlarged schematic cross-sectional view of the driving device 150, the power transmission mechanism 160, the vicinity of the upper portion of the strut 110, and the vicinity of the upper portion of the center cage 190; It is a figure which shows the positional relationship of the support|pillar 110, the center cage 190, and the corridor 180 when FIG. 11 is seen from below.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram showing an example of a centrally driven suspended solid content scraper (hereinafter referred to as “solid content scraper”) 1-1 installed in a sedimentation tank 10, and FIG. 1(a) is a schematic plan view. FIG. 1(b) is a schematic side sectional view.

As shown in these figures, the solid content scraper 1-1 includes a corridor 30 installed so as to straddle the sedimentation tank 10 consisting of a circular water tank, and a corridor 30 installed in the center of the corridor 30. It comprises a driving device 50 , a main shaft 70 suspended from the driving device 50 , and a swivel arm (scraper arm) 80 attached to the lower portion of the main shaft 70 .

The corridor 30 is installed on the outer peripheral upper edge of the sedimentation tank 10 so as to straddle the center part of the sedimentation tank 10 . The corridor 30 is constructed by installing flat floorboards on a pair of corridor base members 31, 31 (see FIG. 2 below) installed in parallel, and attaching handrails 34 to both sides of the floorboards. A driving device 50 is installed at the central position of the corridor 30 , and a plurality of (four in this example) inspection openings 32 are formed in the corridor 30 portion around the driving device 50 . On the lower surface side of the inspection port 32, coupling portions (connecting portions) 59 and 61 connecting output shafts (drive shafts) 55 and 57 of the driving device 50 described below and the main shaft 70, and holding means (brackets 71, 71 and an inspection stand 33 for maintenance of the corridor 30) are installed. The inspection platform 33 is installed at a position higher than the highest water level HWL of the sedimentation tank 10 .

A swivel arm 80 that rotates integrally with the main shaft 70 is attached to the lower portion of the main shaft 70 . A scraper (scraper blade) 81 for scraping the sludge that has settled on the bottom of the sedimentation tank 10 is attached to the swivel arm 80 .

FIG. 2(a) is an enlarged schematic cross-sectional view of the main part of the connecting portion between the driving device 50 and the main shaft 70, and FIG. 2(b) is a view taken along line AA in FIG. 2(a). As shown in FIG. 2( a ), the driving device 50 includes a motor direct-connection reduction gear 53 installed on a driving device mount 51 , and a drive shaft 57 connected to a drive shaft 55 of the motor direct-connection reduction gear 53 . is equipped with The main shaft 70 is connected to the drive shaft 57 . Here, the drive device 50 including the motor-directed speed reducer 53 and the drive shaft 57 constitutes a rotary drive mechanism.

The lower end of the drive shaft 55 of the motor direct-coupled reduction gear 53 is connected to the upper end of the drive shaft 57 by the upper coupling 59 , and the lower end of the drive shaft 57 is connected to the upper end of the main shaft 70 by the lower coupling 61 . The upper coupling 59 is configured by joining and fixing a flange 551 provided on the drive shaft 55 and a flange 571 provided on the drive shaft 57, and the lower coupling 61 is connected to a flange 573 provided on the drive shaft 57. , and a flange 701 provided on the main shaft 70 are joined and fixed. A joint portion between the flange 573 and the flange 701 is called a connection portion for detachably connecting the main shaft 70 and the driving device 50 .

A middle portion of the drive shaft 57 is supported by a bearing portion 63 . The bearing portion 63 is fixed to the upper surface side of the corridor base members 31 , 31 made of H-shaped steel that constitute the corridor 30 . Above the corridor base members 31, 31, the drive device stand 51 on which the drive device 50 is installed is attached.

As shown in FIGS. 2(a) and 2(b), one end of a pair of brackets 71, 71 is fixed to the outer peripheral surface of the main shaft 70 below the lower coupling 61, respectively. Both brackets 71, 71 are mounted so as to protrude linearly outward in the radial direction from positions 180° opposite to each other on the outer peripheral surface of the main shaft 70 from the same height position. These brackets 71, 71 rotate (rotate) together with the rotation of the main shaft 70. At this time, the upper surfaces of both brackets 71, 71 are positioned so that they do not come into contact with the lower surfaces of the corridor base members 31, 31. are placed.

Then, the water taken from the river, for example, and after the garbage and sand have been submerged in the sedimentation basin is introduced into the sedimentation basin 10 shown in FIG. A flocculating agent is added to the introduced water to form flocculated flocs that sink to the bottom of the sedimentation tank 10 . At this time, by driving the motor direct-coupled reduction gear 53, the main shaft 70 and the swivel arm 80 are rotated via the drive shaft 57, and the sediment is collected at the center of the bottom surface of the sedimentation tank 10, not shown. It is discharged outside through a pipe and transferred to the next step. On the other hand, the water from which the sediment has been removed is discharged to the outside through another pipe or the like, and transferred to the next step.

Next, when replacing or repairing the drive device 50 such as the motor direct-coupled speed reducer 53, the drive shaft 57, and the bearing portion 63, first, an operator enters the inspection platform 33 through the inspection opening 32 of the corridor 30 and inspects the main shaft. By rotating 70, the positions of both brackets 71, 71 are moved to the position shown in FIG.

Next, the positions of mounting holes (not shown) previously formed in both the brackets 71, 71 and the corridor base members 31, 31 are matched, and the brackets 71, 71 are fixed by fixing means R1, R1 such as bolts and nuts. Between the corridor base members 31, 31 is fixed. Thereby, the main shaft 70 and the swivel arm 80 are fixed to the corridor 30, which is a fixed member.

Next, by separating the connecting portion between the flange 573 and the flange 701 that constitute the lower coupling 61 , the load of the main shaft 70 and the swivel arm 80 is held on the corridor 30 via the brackets 71 , 71 . The above process is a holding process for holding the main shaft 70 at a position above the water surface of the sedimentation tank 10 .

Next, in this state, for example, the drive device 50 is replaced or repaired (removal step). At this time, since the load of the main shaft 70 and the swivel arm 80 is supported by the corridor 30, the removal of the motor-directed reduction gear 53 of the drive device 50 can be easily and smoothly performed.

Thus, both brackets 71, 71 and the corridor 30 to which they are attached constitute holding means for holding the main shaft 70 removed from the driving device 50 near the removed position.

When the replacement or repair of the driving device 50 is completed, the connecting portion of the flange 573 and the flange 701 is connected (installation step), and then the fixed state between the brackets 71, 71 and the corridor base members 31, 31 is released. (hold release step).

This completes the replacement or repair work. The replacement/repair procedure described above is an example, and replacement/repair may be performed using various other different replacement/repair procedures (the same applies to each of the following embodiments).

Since the main shaft 70 and the like are held above the water surface, it is necessary to remove the water from the sedimentation tank 10 as in the conventional art, or to temporarily receive the main shaft 70 and the swivel arm 80 in the sedimentation tank 10 from which the water has been removed. Therefore, replacement and repair work of the driving device 50 can be performed easily and smoothly in a short time. In addition, it is possible to secure a quick maintenance method in the event of an emergency breakage of the driving device 50 or in a treatment facility without a spare machine, thereby ensuring safety and security of water treatment and contributing to the extension of the service life of the equipment.

FIG. 3(a) is an enlarged schematic cross-sectional view of a main part of a connecting portion between a driving device 50 and a spindle 70 according to another embodiment of the present invention, and FIG. 3(b) is a view taken along the line BB in FIG. 3(a) It is a diagram. In this embodiment, parts identical or corresponding to those in the embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals. Matters other than those described below are the same as those of the embodiment shown in FIGS.

In this embodiment, the construction of the holding means, which is different from the embodiment shown in FIGS. The main difference is that the brackets 71, 71 of the main shaft 70 are arranged close to each other on the upper surface side of the brackets 35, 35 so that both surfaces do not contact each other.

The corridor-side brackets 35, 35 are generally U-shaped, and their ends are fixed to the outer side of the corridor base members 31, 31 by mounting metal fittings 35a, 35a. installed on the bottom.

When replacing or repairing the drive device 50 such as the motor direct-coupled reduction gear 53, the drive shaft 57, and the bearing portion 63, as described above, an operator enters the inspection platform 33 through the inspection opening 32 of the corridor 30, By rotating the main shaft 70, the positions of the brackets 71, 71 are moved to the position shown in FIG.

Next, the positions of mounting holes (not shown) previously formed in the brackets 71, 71 and the brackets 35, 35 are matched, and the brackets 71, 71 and both the brackets 71, 71 are fixed by fixing means R1, R1 such as bolts and nuts. Fix between the brackets 35 , 35 . In this embodiment, the brackets 71, 71 may be simply placed on the brackets 35, 35 without using the fixing means R1, R1. As a result, the main shaft 70 and the swivel arm 80 are attached to both brackets 35, 35 on the side of the corridor 30, which are fixed members.

Next, by separating the connecting portion between the flange 573 and the flange 701 that constitute the lower coupling 61, the load of the main shaft 70 and the swivel arm 80 is held on the corridor 30 via the brackets 71, 71 and the brackets 35, 35. .

In this state, for example, the drive device 50 is replaced or repaired. At this time, the load of the main shaft 70 and the swivel arm 80 is supported by the corridor 30. can be done easily and smoothly.

In the case of this embodiment, both brackets 71, 71 constituting support members on the side of the main shaft 70 and both brackets 35, 35 constituting support members on the side of the corridor 30 for fixing (or only placing) them are driven. It constitutes a holding means for holding the spindle 70 removed from the device 50 in the vicinity of the removed position.

When the replacement or repair of the driving device 50 is completed, the connection portion between the flange 573 and the flange 701 is connected, and the fixed state between the brackets 71, 71 and the brackets 35, 35 (the placed state if not fixed) is released. . This completes the replacement or repair work.

In the case of this embodiment as well, since the main shaft 70 and the like are held above the water surface, there is no need to remove the water from the sedimentation tank 10 as in the conventional art, and the work can be done easily and smoothly in a short time. can be done.

FIG. 4(a) is an enlarged schematic cross-sectional view of the main part of the connecting portion between the driving device 50 and the main shaft 70 according to still another embodiment of the present invention, and FIG. 4(b) is a CC arrow in FIG. 4(a). It is a perspective view. In this embodiment, parts identical or corresponding to those in the embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals. Matters other than those described below are the same as those of the embodiment shown in FIGS.

In this embodiment, the configuration of the holding means is different from that in the embodiment shown in FIGS. is used as a support member on the side of the main shaft 70, and a pair of brackets 37, 37 on the side of the corridor that are fixed across the two corridor base members 31, 31 in parallel, and jack bolts (jack bolts) attached to these brackets 37, 37 The mechanism 39, 39 is used as a support member on the drive device 50 side.

The brackets 37, 37 on the side of the corridor are formed to have a length that straddles both the corridor base members 31, 31, and are directly fixed to the lower surfaces of the corridor base members 31, 31 by fixing means R1, R1 such as bolts and nuts. . A jack mechanism installation space S1 is formed between the brackets 37, 37 on the side of the corridor and the enlarged diameter portion 701A of the flange on the side of the main shaft.

When replacing or repairing the driving device 50, the worker enters the inspection platform 33 through the inspection opening 32 of the corridor 30, as described above. In this embodiment, it is not necessary to rotate the spindle 70 to adjust its rotational position.

Next, the jack bolts 39, 39 are rotated so that the upper ends of the jack bolts 39, 39 come into contact with the enlarged diameter portion 701A of the flange. As a result, the main shaft 70 and the swivel arm 80 are supported by both brackets 37, 37 on the side of the corridor 30, which are fixed members.

Next, by disconnecting the connecting portion between the flange 573 and the flange 701 that constitute the lower coupling 61 , the load of the main shaft 70 and the swivel arm 80 is held in the corridor 30 .

In this state, for example, the drive device 50 is replaced or repaired in the same manner as described above. 53 can be removed easily and smoothly.

In the case of this embodiment, the enlarged flange portion 701A, the brackets 37, 37 on the side of the corridor 30 on which it is placed, and the jack bolts 39, 39 move the main shaft 70 removed from the drive device 50 to the vicinity of the removed position. It is holding means for holding.

When the replacement or repair of the driving device 50 is completed, after connecting the connecting portion of the flange 573 and the flange 701, the jack bolts 39, 39 are reversely rotated to separate the upper ends thereof from the enlarged diameter portion 701A of the flange, and the main shaft 70, etc. release the hold state. This completes the replacement or repair work.

In the case of this embodiment as well, since the main shaft 70 and the like can be held above the water surface, there is no need to remove the water from the sedimentation tank 10 as in the conventional art, and the work can be done easily and smoothly in a short time. can be done.

The jack bolts 39, 39 may be removed from the brackets 37, 37 during normal operation.

FIG. 5(a) is an enlarged schematic cross-sectional view of the main part of the connecting portion between the driving device 50 and the main shaft 70 according to still another embodiment of the present invention, and FIG. 5(b) is an arrow DD in FIG. 5(a). It is a perspective view. In this embodiment, parts identical or corresponding to those in the embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals. Matters other than those described below are the same as those of the embodiment shown in FIGS.

1 and 2, four brackets 73, 73, . . . These four brackets 73, 73, . The square and ring-shaped bracket 41 and the jacks (jack mechanism) 43, 43, . . .

The brackets 73, 73, .

The bracket 41 on the side of the corridor 30 is formed in a rectangular ring shape and is positioned below the bracket 73 on the side of the main shaft 70. A space S2 for installing a jack mechanism is formed between the two at a predetermined distance. ing.

When replacing or repairing the driving device 50, an operator enters the inspection platform 33 through the inspection opening 32 of the corridor 30, rotates the main shaft 70, and adjusts the positions of the brackets 73, 73, . . . , so that the positions shown in FIG.

Next, the shafts in the jacks 43, 43, . . . As a result, the main shaft 70 and the swivel arm 80 are supported by the bracket 41 on the corridor 30 side, which is the stationary member.

Next, by disconnecting the connecting portion between the flange 573 and the flange 701 that constitute the lower coupling 61 , the load of the main shaft 70 and the swivel arm 80 is held in the corridor 30 .

In this state, for example, the drive device 50 is replaced or repaired in the same manner as described above. 53 can be removed easily and smoothly.

In the case of this embodiment, the brackets 73, 73, . . . and the brackets 41 and jacks 43, 43, . It is a holding means for holding.

When the replacement or repair of the driving device 50 is completed, after connecting the connecting portion of the flange 573 and the flange 701, the shafts in the jacks 43, 43, . release the hold state. This completes the replacement or repair work.

In the case of this embodiment as well, since the main shaft 70 and the like can be held above the water surface, there is no need to remove the water from the sedimentation tank 10 as in the conventional art, and the work can be done easily and smoothly in a short time. can be done.

The jacks 43, 43, . . . may be removed from the bracket 41 during normal operation (the same applies to jacks 45, 47, 250, 260 described below). Also, instead of four jacks 43, two jacks 43 may be provided at positions opposed to each other by 180°.

FIG. 6 is an enlarged schematic cross-sectional view of the main part of the connecting portion between the driving device 50 and the main shaft 70 according to still another embodiment of the present invention. In this embodiment, parts identical or corresponding to those in the embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals. Matters other than those described below are the same as those of the embodiment shown in FIGS. In this embodiment and the embodiments shown in FIGS. 7 to 9 described below, the holding member is installed above the corridor 30, unlike the embodiment shown in FIGS. 1 to 5 above.

That is, in the embodiment shown in FIG. 6, a second mount 52 is installed between the corridor base members 31, 31 and the drive unit mount 51 described in FIGS. The coupling 61 is positioned above the corridor foundation members 31, 31, and a circular bracket 75 is installed at a position below the flange 701 of the main shaft 70 and slightly above the upper surfaces of the corridor foundation members 31, 31. installed. The outer diameter dimension of the bracket 75 is formed to be larger than the gap between the pair of corridor base members 31 , 31 . That is, the bracket 75 rotates together with the main shaft 70, but is arranged so that the lower surface of the bracket 75 is in a position close to and out of contact with the upper surfaces of the corridor base members 31,31.

When replacing or repairing the driving device 50, since the lower coupling 61 and the bracket 75 are positioned above the corridor base members 31, 31 in this embodiment, the operator enters the inspection platform 33 of the corridor 30. It is not necessary, and the workability is improved (of course, the work may be performed while entering the inspection frame 33). In the case of this embodiment, it is not necessary to rotate the main shaft 70 to adjust its rotational position. They may be fixed by fixing means such as bolts and nuts after being adjusted as above.

Next, by disconnecting the connecting portion between the flange 573 and the flange 701 that constitute the lower coupling 61 , the load of the main shaft 70 and the swivel arm 80 is held in the corridor 30 .

In this state, for example, the drive device 50 is replaced or repaired. At this time, since the load of the main shaft 70 and the swing arm 80 is supported by the corridor 30, it is possible to easily and smoothly remove the reduction gear 53 of the drive device 50 directly connected to the motor.

Thus, the bracket 75 and the corridor 30 on which it is mounted are holding means for holding the main shaft 70 removed from the driving device 50 in the vicinity of the removed position.

When the replacement or repair of the driving device 50 is completed, the connecting portions of the flanges 573 and 701 are connected, and the bracket 75 is slightly lifted from the corridor base members 31, 31 to release the placed state. Specifically, the length of the flange bolt that fixes between the flange 573 and the flange 701 is configured to be long, and by tightening the flange bolt, the mounting state of the bracket 75 on the corridor base members 31, 31 is adjusted. unlock. Conversely, by loosening the flange bolts, the brackets 75 are placed and held on the corridor base members 31, 31 as described above. This completes the replacement or repair work.

In the case of this embodiment as well, since the main shaft 70 and the like can be held above the water surface, there is no need to remove the water from the sedimentation tank 10 as in the conventional art, and the work can be done easily and smoothly in a short time. can be done.

In addition to the circular steel material, the bracket 75 is a bracket having a configuration in which two straight steel materials are attached to the outer peripheral surface of the main shaft 70 so as to protrude radially outward from the outer peripheral surface of the main shaft 70 facing each other at an angle of 180°. can be

FIG. 7 is an enlarged schematic cross-sectional view of the main part of the connecting portion between the driving device 50 and the main shaft 70 according to still another embodiment of the present invention. In this figure, the description of the motor direct connection type speed reducer 53 is omitted. In this embodiment, the same reference numerals are given to the same or corresponding parts as those of the embodiment shown in FIGS. Matters other than those described below are the same as those of the embodiment shown in FIGS.

In this embodiment, a circular bracket 77 is installed below the flange 701 of the main shaft 70 and above the upper surfaces of the corridor base members 31 , 31 . The outer diameter dimension of the bracket 77 is formed to be larger than the gap between the pair of corridor base members 31 , 31 . A pair of jacks (jack mechanism) 45 , 45 are installed at positions facing the lower surface of the bracket 77 on the upper surfaces of the corridor base members 31 , 31 .

The bracket 77 is installed at a position with a predetermined gap from the upper surfaces of the corridor base members 31, 31, and a jack mechanism installation space S3 is provided between the two by a predetermined distance.

When replacing or repairing the driving device 50, since the lower coupling 61 and the bracket 77 are positioned above the corridor base members 31, 31 in this embodiment as well, the worker enters the inspection platform 33 of the corridor 30. It is not necessary, and the workability is improved (of course, the work may be performed while entering the inspection frame 33). In this embodiment, it is not necessary to rotate the spindle 70 to adjust its rotational position.

Next, the shafts in the jacks 45 , 45 are raised and their tips are brought into contact with the lower surface of the bracket 77 .

Next, by disconnecting the connecting portion between the flange 573 and the flange 701 that constitute the lower coupling 61 , the load of the main shaft 70 and the swivel arm 80 is held in the corridor 30 .

In this state, for example, the drive device 50 is replaced or repaired. At this time, since the load of the main shaft 70 and the swing arm 80 is supported by the corridor 30, it is possible to easily and smoothly remove the reduction gear 53 of the drive device 50 directly connected to the motor.

Thus, the bracket 77, the jacks 45, 45, and the corridor 30 on which they are placed are holding means for holding the main shaft 70 removed from the driving device 50 near the removed position.

When the replacement or repair of the driving device 50 is completed, the joints of the flanges 573 and 701 are connected, the shafts of the jacks 45, 45 are lowered and separated from the bracket 77, and the holding state is released. This completes the replacement or repair work.

In the case of this embodiment as well, since the main shaft 70 and the like can be held above the water surface, there is no need to remove the water from the sedimentation tank 10 as in the conventional art, and the work can be done easily and smoothly in a short time. can be done.

In addition to the circular steel material, the bracket 77 is a bracket constructed by attaching two straight steel materials to the outer peripheral surface of the spindle 70 facing each other at 180° so as to protrude radially outward from the outer peripheral surface. can be

FIG. 8 is an enlarged schematic cross-sectional view of the main part of the connecting portion between the driving device 50 and the main shaft 70 (however, the description of the motor direct-coupled speed reducer 53 is omitted) according to still another embodiment of the present invention. In this embodiment, the same reference numerals are given to the same or corresponding parts as those of the embodiment shown in FIGS. Matters other than those described below are the same as those of the embodiment shown in FIGS.

In this embodiment, by enlarging the outer diameter of the flange 701 of the main shaft 70, a circular flange enlarged diameter portion 701B is formed, and this flange enlarged diameter portion 701B is used as a support member on the main shaft 70 side, while both corridor base members are formed. Jacks (jack mechanisms) 47, 47 are installed on the lower surface side of the flange enlarged diameter portion 701B on the upper surface of 31, 31, and serve as support members on the corridor 30 side.

The flange enlarged diameter portion 701B is installed at a position with a predetermined gap from the upper surfaces of the corridor base members 31, 31, and a jack mechanism installation space S4 is provided between the two by a predetermined distance.

When replacing or repairing the driving device 50, since the lower coupling 61 and the jacks 47, 47 are positioned above the corridor base members 31, 31 in this embodiment, the operator must There is no need to enter the inspection frame 33, and the workability is improved (of course, the inspection frame 33 may be entered during the work). In this embodiment, it is not necessary to rotate the spindle 70 to adjust its rotational position.

Next, the shafts in the jacks 47, 47 are raised so that their tips are brought into contact with the lower surface of the enlarged diameter portion 701B of the flange.

Next, by disconnecting the connecting portion between the flange 573 and the flange 701 that constitute the lower coupling 61 , the load of the main shaft 70 and the swivel arm 80 is held in the corridor 30 .

In this state, for example, the drive device 50 is replaced or repaired. At this time, since the load of the main shaft 70 and the swing arm 80 is supported by the corridor 30, it is possible to easily and smoothly remove the reduction gear 53 of the drive device 50 directly connected to the motor.

In this manner, the enlarged flange portion 701B, the jacks 47, 47, and the corridor 30 on which they are placed are holding means for holding the main shaft 70 removed from the driving device 50 near the removed position.

When the replacement or repair of the driving device 50 is completed, the connecting portions of the flanges 573 and 701 are connected, the shafts of the jacks 47, 47 are lowered and separated from the enlarged diameter portion 701B of the flanges, and the holding state is released. This completes the replacement or repair work.

In the case of this embodiment as well, since the main shaft 70 and the like can be held above the water surface, there is no need to remove the water from the sedimentation tank 10 as in the conventional art, and the work can be done easily and smoothly in a short time. can be done.

In addition to the circular shape, the flange enlarged diameter portion 701B may have a configuration in which two straight steel members are formed so as to protrude radially outward from the outer peripheries of the flange 701 facing each other at 180°.

FIG. 9(a) is an enlarged schematic cross-sectional view of a principal part of a connecting portion between a driving device 50 and a main shaft 70 according to still another embodiment of the present invention, and FIG. 9(b) is an arrow EE in FIG. 9(a). It is a perspective view. In this embodiment, the same reference numerals are given to the same or corresponding parts as those of the embodiment shown in FIGS. Matters other than those described below are the same as those of the embodiment shown in FIGS.

In this embodiment, a pair of brackets 49 , 49 are installed and fixed to the upper surfaces of the corridor base members 31 , 31 along the corridor base members 31 , 31 . On the other hand, a pair of brackets 79, 79 are attached to the outer peripheral surface of the main shaft 70 so as to protrude radially outward from positions facing each other at 180 degrees. The brackets 49, 49 and the brackets 79, 79 are installed so as to face each other with a narrow gap formed therebetween.

When replacing or repairing the driving device 50, since the lower coupling 61 and the brackets 49, 49, 79, 79 are located above the corridor base members 31, 31 in this embodiment as well, the operator is not required to replace or repair the corridor 30. There is no need to enter the inspection platform 33, and the operator can rotate the main shaft 70 to change the positions of the brackets 79, 79 to the positions shown in FIG. , 49 intersect. At this time, the brackets 79, 79 and the brackets 49, 49 may be fixed by fixing means such as bolts and nuts.

Next, by disconnecting the connecting portion between the flange 573 and the flange 701 that constitute the lower coupling 61 , the load of the main shaft 70 and the swivel arm 80 is held on both brackets 49 , 49 side, that is, on the corridor 30 .

In this state, for example, the drive device 50 is replaced or repaired. At this time, since the load of the main shaft 70 and the swing arm 80 is supported by the corridor 30, it is possible to easily and smoothly remove the reduction gear 53 of the drive device 50 directly connected to the motor.

Thus, the brackets 79, 79, the brackets 49, 49, and the corridor 30 on which the brackets 49, 49 are mounted are holding means for holding the main shaft 70 removed from the driving device 50 near the removed position.

When the replacement or repair of the drive device 50 is completed, the connecting portion of the flange 573 and the flange 701 is connected, and at this time, the lower surfaces of the brackets 79, 79 are lifted slightly from the upper surfaces of the brackets 49, 49, and the holding state is released. do. Specifically, the length of the flange bolt that fixes between the flange 573 and the flange 701 is configured to be long, and by tightening the flange bolt, the mounting state of the brackets 79, 79 on the brackets 49, 49 is adjusted. unlock. Conversely, by loosening the flange bolts, the brackets 79, 79 are mounted and held on the brackets 49, 49 as described above. This completes the replacement or repair work.

In the case of this embodiment as well, since the main shaft 70 and the like can be held above the water surface, there is no need to remove the water from the sedimentation tank 10 as in the conventional art, and the work can be done easily and smoothly in a short time. can be done. Incidentally, the brackets 79, 79 may be formed in a disc shape.

FIG. 10 is a schematic side cross-sectional view showing an example of a center-driven strut-type solids scraper (hereinafter referred to as "solids scraper") 1-2 installed in the sedimentation tank 100. As shown in FIG. As shown in the figure, the solid content scraper 1-2 includes a sedimentation tank 100 consisting of a circular water tank, a support 110 protruding from the bottom near the center of the sedimentation tank 100, and a A driving device 150 as a rotational driving mechanism to be installed and its power transmission mechanism 160, a corridor 180 installed so as to reach the power transmission mechanism 160 from the outer peripheral upper side of the sedimentation tank 100, and surrounding the outer periphery of the support 110 It comprises a center cage (rotating member) 190 whose upper end is connected to the power transmission mechanism 160 and rotated, and a turning arm 200 attached to the lower part of the center cage 190 . A scraper 201 and the like for scraping sludge that has settled on the bottom of the sedimentation tank 100 are attached to the swivel arm 200 . A sludge discharge pipe 203 is attached to the center of the bottom of the sedimentation tank 100 . A cylindrical center well 210 is installed around the center cage 190 of the sedimentation tank 100, and the tip of an inflow pipe 220 for introducing water to be treated into the center well 210 is positioned. An inspection opening 183 leading to the inspection platform 230 is formed in the corridor 180 portion around the power transmission mechanism 160 . The inspection platform 230 and the power transmission mechanism 160 are installed at a position higher than the highest water level HWL of the sedimentation tank 100 .

FIG. 11 is an enlarged schematic cross-sectional view of the driving device 150, the power transmission mechanism 160, the vicinity of the top of the support 110, and the vicinity of the center cage 190. FIG. 3 is a diagram showing the positional relationship between the center cage 190 (its mounting flange portion 191) and the corridor 180. FIG. The corridor 180 is indicated by a dashed line for convenience of illustration.

As shown in FIG. 11 , the drive device 150 includes a motor-directed reduction gear 151 and a drive shaft 153 of the motor-directed reduction gear 151 . The motor direct connection type reducer 151 is attached to a reducer base 171 described below. A gear 165 that constitutes a power transmission mechanism 160 is attached to the drive shaft 153 , and a disk-shaped gear 167 that constitutes the power transmission mechanism 160 is meshed with the gear 165 . A swivel plate 169 constituting the power transmission mechanism 160 is fixed to the lower surface of the disk-shaped gear 167, and a mounting flange portion 191 at the upper end of the center cage 190 is detachably fixed to the lower surface of the swivel plate 169.

The strut 110 has a columnar strut body 111 . At the upper end of the column main body 111, there is a substantially truncated cone-shaped base plate 113 that constitutes the power transmission mechanism 160, and the swivel plate 169 that is rotatably attached to the outer periphery of the upper part of the base plate 113 via a swivel plate bearing 115. It is rotatably mounted. At the upper end of the base plate 113, a speed reducer base 171 for mounting the speed reducer 151 directly connected to the motor is attached.

Four brackets 117, 117, . . . The upper surface of each bracket 117, 117, . space S5, S5, . . .

The corridor 180 has a corridor central part 180A attached to its tip so that the operator can move up to just above the power transmission mechanism 160 and the pillars 110 . The central part 180A of the corridor can be detached from the corridor 180 at the parting line P1. L-shaped brackets 181, 181 are protruding from both left and right sides of the corridor 180. As shown in FIG. The tip portions of both brackets 181, 181 are positioned so that their lower surfaces face the upper surfaces of the two corners of the mounting flange 191 of the center cage 190, and the space between them is defined as a jack mechanism installation space S6. and

Then, in the sedimentation tank 100 shown in FIG. 10, a flocculating agent is added to the water to be treated introduced from the inflow pipe 220 to generate flocculated flocs and sink them to the bottom of the sedimentation tank 100 . At this time, by driving the speed reducer 151 directly connected to the motor, the disk-shaped gear 167, the swivel plate 169, the center cage 190, and the swivel arm 200 are rotated via the drive shaft 153 to precipitate the sediment. The sludge is collected at the center of the bottom of the pond 100, discharged to the outside through the sludge discharge pipe 203, and transferred to the next step. On the other hand, the supernatant water from which the sediments have been removed is discharged to the outside through another pipe or the like, and transferred to the next step.

On the other hand, when replacing or repairing the drive device 150 or the power transmission mechanism 160, first, an operator enters the inspection platform 230 through the inspection opening 183 of the corridor 180, rotates the center cage 190, and rotates the brackets 117, 117. , are moved to the positions shown in FIG. 12, that is, the intermediate portions of the mounting flanges 191 of the center cage 190 are positioned with respect to the brackets 117, 117, . At the same time, the corners of the mounting flange 191 are positioned below the tip portions of the brackets 181 and 181 of the corridor 180 .

Next, jacks (jack mechanisms) 250, 250, . . . are installed on the four brackets 117, 117, . . . are raised to bring their tips into contact with the lower surface of the mounting flange 191. As shown in FIG.

Also, jacks (jack mechanisms) 260, 260 are installed on the two corners of the upper surface of the mounting flange 191, that is, in the spaces S6, S6 for installing jack mechanisms, and the shafts in the jacks 260, 260 are raised to are brought into contact with the lower surfaces of the brackets 181 , 181 of the corridor 180 .

Then, for example, the fixation between the corridor central part 180A and the reduction gear base 171 is removed, the corridor central part 180A is divided from the corridor 180 and temporarily removed, and then the connecting part between the turning board 169 and the mounting flange 191 of the center cage 190 is removed. The driving device 150 and the like are removed by disconnecting. At this time, the loads of the center cage 190 and the corridor 180 are held by the pillars 110 via the jacks 250 and 260 .

Then, in this state, for example, each member constituting the removed driving device 150 or power transmission mechanism 160 is replaced or repaired. At this time, the load of the center cage 190 and the corridor 180 is supported by the struts 110, so that the drive device 150 and the power transmission mechanism 160 can be replaced or repaired easily and smoothly.

, jacks (jack mechanisms) 250, 250, . and a holding means for holding the center cage 190 from which the power transmission mechanism 160 and the like are removed in the vicinity of the removed position. Mounting flanges 191 and jacks (jack mechanisms) 260, 260 that constitute support members on the center cage 190 side, and brackets 181, 181 that constitute support members on the corridor 180 side, drive device 150, power transmission mechanism 160, and the like. It is a second holding means for holding the removed corridor 180 in the vicinity of the removed position. Both of these holding means and the second holding means are above the water surface of the sedimentation tank 100 .

After replacement or repair of the drive device 150 and the power transmission mechanism 160 is completed, each member is attached to its original position. (or remove the jacks 260, 260), then lower the tips of the shafts in the jacks 250, 250, . The holding state of the center cage 190 and the corridor 180 by 110 is released. This completes the replacement or repair work.

In the case of this embodiment as well, the center cage 190 and the like can be held above the water surface, so there is no need to remove the water from the sedimentation tank 100 as in the conventional art, and the work can be done easily and smoothly in a short time. be able to.

It should be noted that the bracket 117 may be configured in another shape such as circular. Alternatively, instead of the mounting flange 191, a bracket may be protruded from the outer periphery of the center cage 190, and the bracket, the brackets 117, 117, . . . and the jacks 250, 250, . Also, the jacks 250, 250, .

The solid content scraper 1-2 shown in FIGS. 10 to 12 has a rotation drive mechanism such as a drive device 150 and a power transmission mechanism 160 installed on the upper part of the support 110 projecting from the bottom side near the center of the sedimentation tank 100. , is an example of a center-driven pillar-type solid content scraper in which the center cage 190, which is a rotating member, is driven to rotate by the rotation drive mechanism. A swivel as a rotation drive mechanism (power transmission mechanism) is installed at a position above the water surface of the pillar protruding from the bottom side of the , and a swivel body such as a corridor is attached to this swivel to support it in a freely rotatable manner. A driving device is attached to the outer periphery of the revolving body to drive the leading end of the revolving body in the outer periphery of the sedimentation tank, whereby the center cage (rotating member) attached to the rotating revolving body, the revolving arm attached to the center cage, and the The same can be applied to a peripheral drive strut type solids scraper in which the scraper is driven to rotate.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the technical ideas described in the claims, the specification and the drawings. It is possible. Any shape or structure that is not directly described in the specification and drawings is within the scope of the technical idea of the present invention as long as it produces the action and effect of the present invention. Moreover, the embodiments shown in the above description and each drawing can be combined with each other as long as there is no contradiction in the purpose, configuration, and the like. In addition, even a part of the above description and the contents of each drawing can be independent embodiments, and the embodiment of the present invention is one embodiment in which the above description and each drawing are combined. is not limited to

1-1 Solid content scraper (central drive suspension type solid content scraper)
10 Sedimentation pond (tank)
30 Corridor (holding means)
31 Corridor base members (steel members, support members, holding means)
35, 37, 41, 49 Corridor side bracket (support member, holding means)
39 jack bolt (jack mechanism, support member, holding means)
43, 45, 47 jack (jack mechanism, support member, holding means)
50 drive device (rotation drive mechanism)
70 main shaft (rotating member)
71, 73, 75, 79 Main shaft side bracket (support member, holding means)
80 Swivel arm 81 Scraper 701A, 701B Flange enlarged diameter portion (support member, holding means)
S1-S5 Space for installing a jack mechanism S6 Space for installing a second jack mechanism 1-2 Solid scraper (central drive strut type solid scraper)
100 sedimentation pond (tank)
110 Post 117 Bracket (support member, holding means)
150 drive (rotation drive mechanism)
160 power transmission mechanism (rotation drive mechanism)
180 corridor 181 bracket (support member, second holding means)
183 Inspection opening 190 Center cage (rotating member)
191 mounting flange (support member, holding means, second holding means)
200 swivel arm 201 scraper 230 inspection platform 250 jack (jack mechanism, support member, holding means)
260 jack (jack mechanism, support member, second holding means)

Claims (10)

A rotation driving mechanism consisting of at least a driving device or its power transmission mechanism is installed above the water surface in the vicinity of the center of the water tank, and a rotating member to which a scraper is attached and which is driven to rotate by the rotation driving mechanism is arranged in the water tank. and in the solid content scraper that scrapes solid content in the water tank by the rotationally driven scraper,
A connecting portion for detachably connecting the rotating member and the rotation drive mechanism is provided at a position of the rotating member above the water surface of the water tank,
A solid content scraper, wherein holding means for holding the rotating member removed from the rotary drive mechanism at the connecting portion near the removed position is provided at a position above the water surface of the water tank. The solid content scraper according to claim 1,
The solids scraper is a centrally driven suspended solids scraper in which the rotary drive mechanism has the drive and the rotating member has a main shaft suspended from the drive,
The solid matter scraper is characterized in that the holding means is configured such that a corridor-side support member installed above the water tank holds the spindle-side support member at a position above the water surface of the water tank. Arriving. A solid scraper according to claim 2,
The support member on the main shaft side is composed of a bracket projecting radially outward from the main shaft,
The support member on the side of the corridor is composed of a steel material that constitutes the corridor or a bracket attached to the steel material,
A solid scraper, wherein the main shaft is held by temporarily fixing or placing the main shaft side bracket on the corridor side steel material or bracket. A solid scraper according to claim 2,
The connection portion is configured to connect a flange provided on the drive shaft of the drive device and a flange provided on the main shaft,
The support member on the main shaft side is configured by a flange enlarged diameter portion obtained by enlarging the outer diameter of a flange provided on the main shaft,
A solid content raking machine characterized in that the main shaft is held by temporarily fixing or mounting the enlarged flange portion on the steel material forming the corridor or on a bracket attached to the steel material. The solid content scraper according to claim 2 or 3 or 4,
The holding means has the spindle-side support member arranged on the corridor-side support member, and a jack mechanism installation space is provided between the corridor-side support member and the spindle-side support member. A solid scraper, characterized in that: The solid content scraper according to claim 1,
In the solid content scraper, the rotation drive mechanism is installed on the upper part of a support that protrudes from the bottom side near the center of the water tank, and the rotating member rotated by the rotation drive mechanism rotates around the outer periphery of the support. A centrally driven stanchion solids scraper or a peripherally driven stanchion solids scraper having a center cage mounted therearound,
The solid scraper, wherein the holding means is configured such that the support member on the support column side holds the support member on the center cage side at a position above the water surface of the water tank. A solid scraper according to claim 6,
The holding means arranges the center cage side support member on the strut side support member, and provides a jack mechanism installation space between the strut side support member and the center cage side support member. A solid content scraper, characterized in that it is a configuration provided. The solid scraper according to claim 6 or 7,
The solid content scraper further comprises a second holding means for holding the support member on the side of the center cage on the side of the corridor above the water tank at a position above the water surface of the water tank. Arriving. A solid scraper according to claim 8,
The second holding means disposes the corridor-side support member on the center-cage-side support member, and a second holding means is provided between the center-cage-side support member and the corridor-side support member. A solid scraper characterized by having a configuration in which a space for installing a jack mechanism is provided. A rotation driving mechanism consisting of at least a driving device or its power transmission mechanism is installed above the water surface in the vicinity of the center of the water tank, and a rotating member to which a scraper is attached and which is driven to rotate by the rotation driving mechanism is arranged in the water tank. and in the method for replacing the drive mechanism of a solid content scraper that scrapes solid content in a water tank by the rotationally driven scraper,
a holding step of holding the rotating member at a position above the water surface of the water tank;
a removing step of removing the rotation drive mechanism from the rotating member held in the holding step at a position above the water surface of the water tank;
a mounting step of attaching the repaired or replaced rotation driving mechanism to the rotating member from which the rotation driving mechanism was removed in the removing step, at a position above the water surface of the water tank;
a holding release step of releasing the holding of the rotating member held at a position above the water surface of the water tank in the holding step;
A drive mechanism replacement method for a solid content scraper, comprising:

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