JP2021146284A - Scraper - Google Patents

Abstract

To provide a scraper capable of suitably performing the operation of a scraping plate with a simple configuration.SOLUTION: The present invention relates to a scraper 1 that is provided in a tank T storing a liquid W and performs, by a tension applied from a power wire 11, scrape running of scraping a solid matter from one end side to the other end side of the tank T while holding scraping plates 3, 4 at a scraping angle and return running of returning from the other end side to one end side of the tank T while holding the scraping plates 3, 4 at a bottom-off angle. The scraper comprises an operation sheave 13 around which the power wire 11 is wound, transmission sheaves 15, 16 which are provided coaxially with the operation sheave 13 and rotate with the operation sheave 13, driven sheaves 21, 23 that are attached to the scraping plates 3, 4 and rotate with the scraping plates 3, 4, and transmission wires 20, 22 that are wound around the transmission sheaves 15, 16 and the driven sheaves 21, 23 and transmit the rotation of the transmission sheaves 15, 16 to the driven sheaves 21, 23.SELECTED DRAWING: Figure 3

Description

The present invention relates to a scraper that scrapes solids at the bottom in a tank in which a liquid is stored.

In a facility provided with a tank for storing liquid, a scraper may be used to scrape the solid matter accumulated at the bottom of the tank.

Such a scraper is installed, for example, in a settling basin of a water purification plant. Water that has been drawn from the lake and treated appropriately is stored in the tank that forms the settling basin, and the sediment is removed while the solids contained in the water are stored, and the supernatant is collected. It is sent to various facilities on the downstream side. The removed solid matter is settled and accumulated at the bottom of the tank forming the settling basin, and a scraper as described above is used to collect and remove the solid matter.

There are two types of scrapers, one is a type in which the scraping plate attached to the endless chain is cyclically operated to scrape, and the other is a type in which the scraping plate is reciprocated along the bottom of the tank. It is necessary to bring the lower end of the scraping plate into contact with the bottom surface of the tank on the outward route (during scraping travel), while separating it from the bottom surface of the tank on the return route (during return travel). This is to prevent the solid matter that has been scraped from one end side to the other end side of the tank on the outward trip to be scraped back to one end side on the return trip.

In a reciprocating type scraper, a mechanism for rotating the scraping plate is often adopted in order to perform such an operation. That is, the rotation axis of the scraping plate is set in the direction along the horizontal direction, and the scraping plate is set at an angle close to the vertical (hereinafter referred to as "the scraping angle") during the scraping run, and the lower end is the bottom of the tank. On the other hand, when returning, the scraping plate is rotated around the rotation axis and laid down at an angle close to horizontal (hereinafter referred to as "bottom-off angle"), and is separated upward from the bottom of the tank.

The mechanism for rotating the scraping plate is configured to be interlocked with the mechanism for reciprocating the scraping plate along the scraping direction from the viewpoint of performing the operation of the entire scraping machine with as few power sources as possible. There are many. The scraping plate is generally installed so that the longitudinal direction is along the horizontal direction orthogonal to the scraping direction, and the reciprocating motion of the scraping plate is performed by the tension of the wire stretched along the scraping direction ( In the following, among the scraping directions, the direction toward the scraping is referred to as the front, and the opposite direction is referred to as the rear. The horizontal direction orthogonal to the scraping direction is referred to as the "left-right direction"). Therefore, for example, the rotating shaft is provided so as to extend in the left-right direction along the surface formed by the scraping plate, and due to the tension of the wire, in addition to the reciprocating motion of the scraping plate along the wire, the rotating shaft is centered. The rotation operation of the wire is also performed. If the tension required for the rotational movement is smaller than the tension required for the reciprocating movement, the tension applied from the wire toward the front first causes the scraping plate to rotate to the scraping angle, and then to the scraping angle. After the rotation of the wire is completed, the tension of the same wire starts the forward movement of the scraper. On the other hand, during return travel, the tension applied from the wire toward the rear causes the scraper plate to first rotate to the bottom-off angle, and after the rotation to the bottom-off angle is completed, the tension of the same wire causes the scraper to rearward. The move to will begin.

As a document showing a general technical level regarding this type of scraper, for example, there is the following Patent Document 1 and the like.

Japanese Unexamined Patent Publication No. 11-28315

By the way, as described above, the mechanism for interlocking the reciprocating motion and the rotational motion of the shearing plate includes, for example, a sheave that converts the tension of the wire into a rotational force and a plurality of links that transmit the rotational motion of the sheave to the scraping plate. It tends to have a complicated structure. In particular, in a settling basin of a water purification plant, a structure having two scraping plates in the front and rear is often adopted in order to scrape off the solid matter accumulated at the bottom of the tank as much as possible. In such a structure, since the number of parts involved in the interlocking of operations is large, there is a high possibility that a large resistance will be generated between the parts when transmitting the rotational force. If the resistance generated between the parts exceeds the tension required for the reciprocating operation of the scraping plate, the reciprocating operation is started before the rotational operation is completed. That is, there may be a problem that the scraping plate starts the scraping angle even though the scraping plate does not reach the scraping angle, or the return running starts while the scraping plate remains at the scraping angle. Therefore, with respect to the scraping plate of the scraping machine, it has been required to realize a mechanism capable of performing interlocking of rotational movements with as simple a configuration as possible.

In view of such circumstances, the present invention aims to provide a scraping machine capable of suitably performing the operation of the scraping plate with a simple configuration.

According to the present invention, the scraping plate is held at a scraping angle by the tension applied from the power wire, which is provided in the tank for storing the liquid, and the solid matter is scraped from one end side to the other end side of the tank. An operation sheave around which the power wire is wound, and an operation sheave, which is a scraping machine that travels and returns from the other end side of the tank to one end side while holding the scraping plate at a bottoming angle. A transmission sheave that is provided coaxially with the sheave and rotates with the operation sheave, a driven sheave that is attached to the scraping plate and rotates with the scraping plate, and the transmission sheave and the driven sheave that are wound around the driven sheave and the transmission. It is applied to a scraper characterized by having a transmission wire for transmitting the rotation of the sheave to the driven sheave.

In the scraping machine of the present invention, the support shaft forming the rotation axis of the operation sheave may be provided with a stopper that limits the rotation range of the operation sheave.

The scraper of the present invention is provided with wheels inside the scraping plate from both ends in the left-right direction, and the wheels can be configured to move on rails laid along the bottom surface of the tank.

The scraping machine of the present invention includes a first transmission sheave and a second transmission sheave as the transmission sheave, and the scraping plate includes a front scraping plate provided in front of the main body and the main body. It is provided with a rear side scraping plate provided behind the above, and as the driven sheave, a first driven sheave attached to the front side scraping plate and a second driven sheave attached to the rear side scraping plate. A first transmission wire comprising a sheave and transmitting the rotation of the first transmission sheave to the first driven sheave and the rotation of the second transmission sheave as the transmission wire to the second driven sheave. It can be provided with a second transmission wire to transmit to.

In the scraping machine of the present invention, the scraping plate is rotatably attached to a support portion provided so as to project from the main body portion, and the scraping plate is attached to a portion corresponding to the attachment portion to the support portion. , A recess formed so as to form a surface at a position away from the support portion, and a support bracket extending from the recess toward the support portion may be provided.

The scraper of the present invention may include a slide portion whose position of the support portion in the vertical direction with respect to the main body portion can be adjusted.

In the scraping machine of the present invention, the support portion and the main body portion form a surface along the vertical direction in the slide portion and come into contact with each other, and the member on the support portion side and the member on the main body portion side are moved up and down. The position of the support portion in the vertical direction with respect to the main body portion may be adjusted by adjusting the degree of tightening of the adjuster.

Further, the present invention is provided in a tank for storing a liquid, and the tension applied from the power wire holds the scraping plate at a scraping angle and scrapes the solid matter from one end side to the other end side of the tank. It is a scraping machine that performs scraping running and returning running from the other end side of the tank to one end side while holding the scraping plate at a bottoming angle, and the scraping plate is tensioned from the main body portion. It is rotatably attached to a support portion provided so as to come out, and a portion of the scraping plate that corresponds to the attachment portion to the support portion has a recess formed so as to form a surface at a position away from the support portion. The scraper is provided with a support bracket extending from the recess toward the support portion.

The above-mentioned scraper may include a slide portion whose position of the support portion in the vertical direction with respect to the main body portion can be adjusted.

In the above-mentioned scraping machine, the support portion and the main body portion form a surface along the vertical direction in the slide portion and come into contact with each other, and the member on the support portion side and the member on the main body portion side are moved up and down. A penetrating adjusting tool may be provided, and the vertical position of the supporting portion with respect to the main body portion may be adjusted by adjusting the degree of tightening of the adjusting tool.

The above-mentioned scraping machine includes a front scraping plate provided in front of the main body portion and a rear scraping plate provided in the rear of the main body portion as the scraping plate, and serves as the support portion. A front support portion that supports the front side scraping plate and a rear side support portion that supports the rear side scraping plate may be provided.

According to the scraping machine of the present invention, it is possible to obtain an excellent effect that the operation of the scraping plate can be suitably performed with a simple configuration.

It is an overall side sectional view which shows an example of the form of the scraping machine by carrying out this invention, and the settling basin provided with this. It is an overall plan view which shows an example of the form of the scraping machine by carrying out this invention, and the settling basin provided with this. It is a side view which shows the form of the scraper of this Example. It is a top view which shows the form of the scraper of this Example. It is a front view which shows the form of the scraping machine of this Example, and the right half shows the state which lacked the scraping plate for convenience of explanation. It is a rear view which shows the structure of the operation unit in this Example in an enlarged manner. It is a side view which shows the form around the stopper in an enlarged manner. It is a top view which shows the form of the scraper of another Example. It is a side cross-sectional view which shows the structure of the support part and the attachment part of the front side scraping plate in this Example in an enlarged manner. It is a plan cross-sectional view which shows the structure of the support part and the attachment part of the front side scraping plate in this Example in an enlarged manner. It is a side sectional view which shows the reference example of the attachment part of the scraping plate. It is a side sectional view which shows another Example about the attachment part of the scraping plate. It is a plan sectional view which shows the structure of the support part and the attachment part of the front side scraping plate in another embodiment in an enlarged manner. It is a side view which shows the structure of the support part and the attachment part of the rear side scraping plate in this Example in an enlarged manner.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 to 7 show an example of a mode of a scraper according to the implementation of the present invention. Here, it is assumed that a scraper is installed in the settling basin of the water purification plant, and the scraper 1 is installed in the settling basin as a tank T for storing water W as a liquid along the bottom of the tank T. It is installed to perform reciprocating operation. The reciprocating direction (that is, the front-rear direction for the scraper 1) is orthogonal to the left-right direction in FIGS. 1, 3, and 7, the vertical direction in FIGS. 2 and 4, and the paper surface in FIGS. 5 and 6. Each direction corresponds.

The scraping machine 1 shown in FIGS. 1 to 6 is a simplified diagram for the sake of explanation, and parts and structures not directly related to the gist of the present invention are not shown as appropriate (later). The same applies to FIGS. 6 to 14 referred to).

The scraping machine 1 includes a main body portion 2 that reciprocates in the tank T, and scraping plates (front side scraping plate 3 and rear side scraping plate 4) provided in front of and behind the main body portion 2.

The main body 2 is provided with a pair of front and rear wheels (4 wheels in total) 5 at the lower portions on both sides in the left-right direction. A pair of rails 6 extending in the front-rear direction are laid at positions corresponding to the wheels 5 at the bottom of the tank T, and the main body 2 holds the wheels 5 in contact with the upper surface of the rails 6. It is possible to travel back and forth on the rail 6 while rotating.

The front side scraping plate 3 is an elongated plate-shaped member, and is supported at a position protruding forward from the main body portion 2 so as to have a longitudinal direction along the left-right direction. Support portions (front support portions) 7 project from the front surface of the main body 2 at a plurality of positions in the left-right direction, and mounting portions (front mounting portions) 8 provided at the tip portions of the plurality of front support portions 7. The front side scraping plate 3 is rotatably supported at a plurality of positions in the left-right direction.

Similarly, the rear side scraping plate 4, which is an elongated plate-shaped member, is supported at a position protruding rearward from the main body 2 so that the longitudinal direction is along the left-right direction. Support portions (rear side support portions) 9 project from the rear surface of the main body portion 2 at a plurality of positions in the left-right direction, and mounting portions (rear side mounting portions) provided at the tip portions of the plurality of rear side support portions 9 are provided. Part) In 10, the rear side scraping plate 4 is rotatably supported at a plurality of positions in the left-right direction. The structures of the front and rear support portions 7 and 9 and the mounting portions 8 and 10 will be described in detail later.

As shown in FIG. 1, two power wires 11 are stretched in the tank T along the operating direction (scratching direction, front-rear direction) of the scraping machine 1. The power wire 11 is connected to the scraping machine 1 in the middle (the connection structure of the power wire 11 in the scraping machine 1 will be described below), and is hoisted on both sides with respect to the scraping direction of the tank T (not shown). It is connected to the machine so that tension can be applied to the scraping machine 1 from the front and back in the scraping direction. The direction in which tension is applied can be freely switched back and forth by the operation of the hoisting machine.

The scraping machine 1 is provided with operating units 12 on both the left and right sides of the main body 2, and the tension applied from the power wire 11 is applied to the rotational operation of the scraping plates 3 and 4 and the rail 6 via the operating unit 12. It is transmitted to the scraping machine 1 as a reciprocating operation of the scraping machine 1 itself along the above.

As shown in FIGS. 3 to 6, the operation unit 12 forms an operation sheave 13 located outside in the left-right direction and a rotation axis of the operation sheave 13, and a support shaft 14 extending inward from the operation sheave 13 in the left-right direction. And, two transmission sheaves (first transmission sheave 15 and second transmission sheave 16) attached coaxially with the operation sheave 13 are provided in the middle of the support shaft 14. The operation sheave 13, the support shaft 14, and the transmission sheaves 15 and 16 are supported on the upper surface of the base 17 via two bearings 18 which are spherical bearings.

The support shaft 14 is provided horizontally with respect to the scraper 1 along the left-right direction, and the above-mentioned sheaves and bearings are, in order from the outside in the left-right direction, an operation sheave 13, a bearing 18, and a first transmission sheave 15. , The second transmission sheave 16 and the bearing 18 are attached to the support shaft 14 in this order. The operation sheave 13 located on the outermost side projects outward from the base 17. The operation sheave 13 and the two transmission sheaves 15 and 16 are fixed to the support shaft 14, and these sheaves rotate integrally with the base 17 together with the support shaft 14.

Further, at an appropriate position in the middle of the support shaft 14 (in the example shown here, between the outer bearing 18 and the first transmission sheave 15), a stopper is provided so as to project radially outward from the support shaft 14. 19 is provided. When a force for rotating the support shaft 14 is applied, the stopper 19 comes into contact with a member on the base 17 side as the support shaft 14 rotates, whereby the support shaft 14 rotates further. It is designed to play a role in preventing people from not doing so.

The position of the operation sheave 13 in the left-right direction coincides with the stretched position of the power wire 11, and the power wire 11 is wound around the operation sheave 13 in the middle.

As described above, the main body is provided with a plurality of support portions 7 and 9 in the front and rear, but the base 17 of the operation unit 12 which forms a part of the main body 2 is also in the front and rear positions corresponding to the outside in the left-right direction. It is provided with support portions 7 and 9, and also supports the front and rear scraping plates 3 and 4.

A transmission wire (first transmission wire) 20, which is an endless wire, is wound around the first transmission sheave 15 attached to the support shaft 14. The first transmission wire 20 is wound around the first transmission sheave 15 and also around the driven sheave (first driven sheave 21) attached to the front side scraping plate 3.

The first driven sheave 21 is a sheave that is integrally attached to the front side scraping plate 3. As described above, the front side mounting plate 3 is provided so as to be rotatable with respect to the main body portion 2 at a plurality of locations via the front side mounting portion 8 provided at the tip of the front side supporting portion 7. The rotation axis of the front side scraping plate 3 in No. 8 is designed to extend along the horizontal direction with respect to the left-right direction of the main body 2 and to be coaxial with each other. Further, the rotating shaft of the first driven sheave 21 is also designed to be coaxial with the rotating shaft of the front side scraping plate 3 in the front side mounting portion 8.

The mounting position of the first driven sheave 21 on the front side scraping plate 3 in the left-right direction coincides with the position of the first transmission sheave 15 mounted on the support shaft 14, and the first transmission between the two sheaves. The wire 20 is connected. When the support shaft 14 rotates in this way, the rotation of the first transmission sheave 15 accompanying the rotation of the support shaft 14 is transmitted to the first driven sheave 21 via the first transmission wire 20, and the front side scraping plate 3 Is adapted to rotate along the rotation axis formed by the first driven sheave 21 and the front mounting portion 8 according to the rotation of the first driven sheave 21.

Similarly, a transmission wire (second transmission wire) 22, which is an endless wire, is wound around the second transmission sheave 16 attached to the support shaft 14. The second transmission wire 22 is wound around the second transmission sheave 16 and also around the driven sheave (second driven sheave 23) attached to the rear side scraping plate 4.

The second driven sheave 23 is a sheave that is integrally attached to the rear side scraping plate 4. As described above, the rear side scraping plate 4 is provided so as to be rotatable with respect to the main body portion 2 at a plurality of locations via the rear side mounting portion 10 provided at the tip of the rear side support portion 9. The rotation axis of the rear side scraping plate 4 in the rear side mounting portion 10 is designed to extend along the horizontal direction with respect to the left-right direction of the main body portion 2 and to be coaxial with each other. Further, the rotating shaft of the second driven sheave 23 is also designed to be coaxial with the rotating shaft of the rear side scraping plate 4 in the rear side mounting portion 10.

The mounting position of the second driven sheave 23 in the rear side scraping plate 4 in the left-right direction coincides with the position of the second transmission sheave 16 mounted on the support shaft 14, and the second sheave is between the two sheaves. The transmission wire 22 is connected. When the support shaft 14 rotates in this way, the rotation of the second transmission sheave 16 accompanying the rotation of the support shaft 14 is transmitted to the second driven sheave 23 via the second transmission wire 22, and the rear side scraping plate 4 is adapted to rotate along the rotation axis formed by the second driven sheave 23 and the rear mounting portion 10 according to the rotation of the second driven sheave 23.

That is, when tension is applied to the operation sheave 13 from the power wire 11 and the operation sheave 13 rotates, the support shaft 14 rotates together with the operation sheave 13. Along with the rotation of the support shaft 14, the transmission sheaves 15 and 16 provided integrally with the support shaft 14 also rotate, and the rotation is transmitted to the driven sheaves 21 and 23 via the transmission wires 20 and 22, and the driven sheave 21 , 23 attached scraping plates 3 and 4 rotate. In this way, the tension applied from the power wire 11 causes the front and rear scraping plates 3 and 4 to rotate. The range of such rotational operation is limited by the stopper 19 attached to the support shaft 14.
The configuration around the stopper 19 is enlarged and shown in FIG. At the position corresponding to the stopper 19 on the upper surface of the base 17, a pair of contact portions 17a are provided on both sides (left and right positions in FIG. 7) of the support shaft 14 so as to project upward. The stopper 19 moves along the circumferential direction of the support shaft 14 only between the position where it abuts on one abutting portion 17a and the position where it abuts on the other abutting portion 17a. Then, the rotational operation of the scraping plates 3 and 4 interlocking with the support shaft 14 is allowed only in the range in which the stopper 19 moves, whereby the operating range of the scraping plates 3 and 4 is the sliding angle and the bottoming angle. It is limited to the time. By providing the stopper 19 on the support shaft 14 in this way, the range of rotational operation of the scraping plates 3 and 4 can be suitably limited by a simple structure.

The diameter of the operating sheave 13 is set to be larger than that of the first and second transmission sheaves 15 and 16, and the diameters of the first and second driven sheaves 21 and 23 are set to be larger than those of the first and second transmission sheaves 15 and 16. It is set to be larger than 16. By making the diameter of the operation sheave 13 to which tension is applied from the power wire 11 larger than that of the transmission sheaves 15 and 16, the rotational force transmitted from the transmission sheaves 15 and 16 to the driven sheaves 21 and 23 via the transmission wires 20 and 22. And by making the diameter of the driven sheaves 21 and 23 that rotate integrally with the scraping plates 3 and 4 larger than the transmission sheaves 15 and 16, the rotational force transmitted from the transmission sheaves 15 and 16 is driven. It is amplified in the sheaves 21 and 23. In this way, by appropriately setting the diameter of each sheave, the rotation operation of the scraping plates 3 and 4 is performed as smoothly as possible according to the principle of leverage.

The positional relationship of each part constituting the scraper 1 will be supplemented. A total of four wheels 5 are arranged at the lowermost four corners of the main body 2 and are in contact with the upper surface of the rail 6 laid along the bottom surface of the tank T. The front side scraping plate 3 is located in front of the pair of wheels 5 on the front side, and the rear side scraping plate 4 is located behind the pair of wheels 5 on the rear side. The positions of the wheels 5 and the rail 6 in the left-right direction are inside the both ends of the scraping plates 3 and 4 in the left-right direction.

The lower ends of the scraping plates 3 and 4 are in contact with the bottom surface of the tank T at the scraping angle. On the other hand, the two rails 6 are laid along the bottom surface of the tank T, and are located inside the both ends of the scraping plates 3 and 4 in the left-right direction. That is, the two rails 6 and the lower ends of the scraping plates 3 and 4 intersect at the bottom surface of the tank T. Therefore, notches 3a and 4a are provided at the lower ends of the scraping plates 3 and 4 (lower ends at the scraping angle) at positions corresponding to the rails 6, and interfere with the rail 6 when standing at the scraping angle. It is designed not to be done.

The operation unit 12 is located above the wheels 5 and projects from the main body 2 to the outside of the wheels 5 in the left-right direction. The support shaft 14 is supported on the upper surface of the operation unit 12. Therefore, the operating sheaves 13 and the transmission sheaves 15 and 16 attached to the support shaft 14 are located outside and above the wheels 5. Since the positions of the driven sheaves 21 and 23 attached to the scraping plates 3 and 4 in the left-right direction coincide with the transmission sheaves 15 and 16, the driven sheaves 21 and 23 are located outside the wheels 5 in the left-right direction. doing. This position is inside both ends of the scraping plates 3 and 4 in the left-right direction. The heights of the driven sheaves 21 and 23 are approximately the same as the height of the wheels 5.

In this embodiment, two power wires 11 are provided for the main body 2 of one scraper 1, and a total of two operation units 12 each having a support shaft 14 are provided on the left and right in accordance with the two power wires 11. Although the case where the operation unit 12 is provided is illustrated, the configuration of the operation unit 12 is not limited to this, and may be appropriately changed depending on conditions such as the width of the tank T to be installed. For example, as shown in another embodiment in FIG. 8, when a small scraping machine is provided in the tank T having a relatively narrow width, a single power wire 11 provided in the center of the scraping machine 1 in the left-right direction and The operation sheave 13 may be used to operate the support shafts 14 provided on both sides. In addition, the number of power wires 11 installed, the number of operating units 12 installed, the configuration, and the like may be changed as appropriate.

Further, here, a case where a total of two scraping plates 3 and 4 are provided in the front and rear for one scraping machine 1 is illustrated, but the scraping machine is a model provided with only one scraping plate. There can also be. In such a scraper, for example, in one operating unit, only one transmission sheave is provided on the support shaft so that the rotation of the operating sheave is interlocked with the driven sheave attached to one scraping plate. Just do it. As described above, the structure as described in the present specification can be appropriately applied to a scraper having a configuration different from that of the present embodiment.

In addition to the mechanism described above, in order to further smooth the rotation of the scraping plates 3 and 4, in this embodiment, the structures described below are adopted for the support portions 7 and 9 and the mounting portions 8 and 10. doing.

The structures of the front support portion 7 and the front mounting portion 8 are shown in FIGS. 9 and 10. The front side support portion 7 is a member provided so as to project from the front surface of the main body portion 2, and a front side mounting portion 8 for mounting the front side scraping plate 3 is provided at the tip thereof.

The front side mounting portion 8 includes a pair of pin mounting portions 24 formed at the tip of the front side support portion 7, and a support sheave 25 mounted on the front side scraping plate 3. The pin mounting portions 24 are located on both sides in the axial direction so as to sandwich the support sheave 25, and support the pins 25a forming the rotation axis of the support sheave 25 on both sides. The pin 25a is coaxially installed between the support sheaves 25 of the plurality of front mounting portions 8 and the first driven sheave 21 so as to extend in the left-right direction with respect to the main body portion 2, and is installed on the front side as described above. It forms the axis of rotation of the scraping plate 3. A spherical bearing is provided at the mounting position of the pin 25a in the support sheave 25 so that the support sheave 25 can be smoothly rotated with respect to the pin 25a.

The support sheave 25 is attached to the intermediate portion in the lateral direction of the front side scraping plate 3, and at the mounting position of the support sheave 25, the surface formed by the front side scraping plate 3 sandwiches the support sheave 25 and is attached to the front side supporting portion. It is dented on the opposite side of 7. That is, in the front side scraping plate 3, the portion corresponding to the front side mounting portion 8 is formed with a recess 26 having a concave cross-sectional shape so as to form a surface at a position away from the front side support portion 7. A support bracket 27 is provided at the center of the recess 26 so as to project toward the front support portion 7, and the support sheave 25 is supported by the support bracket 27. In this way, the center of gravity of the front side scraping plate 3 can be brought closer to the position of the rotation axis formed by the support sheave 25, and can be ideally matched.

For example, as shown in FIG. 11 as a reference example, the front side scraping plate 3 is not provided with the recess 26, and the front side scraping plate 3 is formed in a flat plate shape and protrudes from the intermediate portion in the lateral direction toward the front side supporting portion 7. When the support bracket 27 is provided in the form, the center of gravity of the support sheave 25 alone coincides with the position of the rotation axis, but the front side scraping plate 3 to which the support sheave 25 is attached is located radially away from the rotation axis. Therefore, the center of gravity of the entire front side scraping plate 3 including the support bracket 27 and the support sheave 25 is separated from the rotation axis. That is, the center of gravity of the front side scraping plate 3 is eccentric from the rotation axis, and the smooth rotation movement is hindered depending on the posture of the front side scraping plate 3. For example, when trying to raise the front side scraping plate 3 at the bottom separation angle to the pulling angle, it is assumed that the weight of the front side scraping plate 3 acts in a direction that hinders the caused operation. NS. Of course, it is possible to correct the position of the center of gravity by attaching auxiliary weights, but the number of parts increases and the structure becomes complicated, and as a result of the partial weight increase, some operations are rather hindered. It may end up. Of course, there is also a problem that the weight of the entire device increases.

Therefore, as shown in FIGS. 9 and 10, if a recess 26 is provided in a portion of the front side scraping plate 3 corresponding to the front side mounting portion 8 and the support sheave 25 is attached to the support bracket 27 formed therein, the support sheave 25 is attached. With the 25 attached to the front support portion 7, most of the members constituting the front side scraping plate 3 come close to the rotation axis of the support sheave 25. As a result, the center of gravity of the entire front side scraping plate 3 approaches the rotation axis, the eccentricity is improved or eliminated, and the rotation operation of the front side scraping plate 3 can be smoothly performed.

Even if the recess 26 as shown in FIGS. 9 and 10 is not provided, for example, if a structure as shown in another embodiment in FIGS. 12 and 13 is adopted, the eccentricity of the front side scraping plate 3 is similarly improved. Can be done. In another embodiment shown here, the front side scraping plate 3 is not provided with a recess, and the pin 25a forming the rotation axis of the support sheave 25 is supported so as to be along the surface formed by the flat plate-shaped front side scraping plate 3. Sheave 25 is attached. The support sheave 25 has a shape protruding from both sides of the front side scraping plate 3, and the pin mounting portion 24 at the tip of the front side support portion 7 that supports the pin 25a forming the rotation axis of the support sheave 25 is also from the tip of the front side support portion 7. A part of the front side scraping plate 3 protrudes to the opposite side. An opening 28 is provided around the mounting portion of the support sheave 25 on the front side scraping plate 3 to avoid interference with the pin mounting portion 24.

Even in this way, the center of gravity of the entire front side scraping plate 3 can be brought closer to the rotation axis. In order to bring the center of gravity closer to the central axis, the members themselves constituting the front side scraping plate 3, the front side support portion 7, the pin mounting portion 24, and the support sheave 25 are obstructed. By providing the recess 26, interference between these members was avoided. In another embodiment shown in FIG. 12, instead of the recess 26, the opening 28 avoids interference. However, in the case of this other embodiment, it is considered that a structure is required to give sufficient strength to the portion connecting the support sheave 25 and the front side scraping plate 3, and the surrounding area is provided with the opening 28. There is a concern that the material strength of the material will decrease. As shown in FIGS. 9 and 10, if the structure is provided with the recess 26, the support sheave 25 and the front side scraping plate 3 can be connected by the support bracket 27 having a sufficient thickness, and the portion corresponding to the opening 28 is Since it is reinforced by the recess 26, sufficient strength can be easily secured for supporting the front side scraping plate 3 on the support sheave 25.

Further, in this embodiment, a slide portion 29 is provided at the connection point between the front side support portion 7 and the main body portion 2, and the front side support portion 7 is configured to be slidable up and down with respect to the main body portion 2, so that an error during component manufacturing is obtained. It is possible to correct the deviation of the rotating shaft due to the assembly error.

The configuration of the slide unit 29 will be described. As shown in FIG. 9, the base portion of the front support portion 7 and the front surface of the main body portion 2 form vertical surfaces and are in contact with each other. An adjustment bracket 29b is provided above the contact surface 29a of the main body 2 with the front support portion 7 so as to project forward. Then, an adjusting tool 29c provided with bolts and nuts is attached so as to vertically penetrate the adjusting bracket 29b, which is a member on the main body 2 side, and the member forming the base of the front support portion 7. ing. The front support portion 7 is supported by the main body portion 2 in a form of being suspended from the adjustment bracket 29b by the adjuster 29c, and the position of the front support portion 7 is contacted by adjusting the degree of tightening of the adjuster 29c. The position of the front support portion 7 with respect to the main body portion 2 can be adjusted in the vertical direction by shifting the front support portion 7 up and down along the surface 29a. Although not shown, a fixture for fixing the front support portion 7 to the main body portion 2 is separately provided, and after adjusting the position of the front support portion 7 with the adjuster 29c, the fixture is used. The front support portion 7 and the front scraping plate 3 are fixed to the main body portion 2.

The rotation axis of the front side scraping plate 3 composed of the support sheave 25 and the first driven sheave 21 is designed coaxially as described above. However, the rotation axis may shift between the plurality of support sheaves 25 and the first driven sheave 21 due to an error that occurs at the time of manufacturing each component or assembling the components. Such a deviation of the rotation axis becomes a resistance to the rotation operation of the front side scraping plate 3. Therefore, if the slide portion 29 is provided in this way and the position of the front support portion 7 in the vertical direction with respect to the main body portion 2 can be adjusted, the error can be absorbed by appropriately changing the position of the front support portion 7. , It is possible to correct the deviation of the rotation axis and reduce the resistance to the rotation operation. Further, by adopting a simple structure using the adjusting tool 29c as described above as the slide portion 29, the position can be easily adjusted.

Although the front support portion 7 and the front mounting portion 8 have been described above, in this embodiment, the same structure is adopted for the rear support portion 9 and the rear mounting portion 10. That is, as shown in FIG. 14, the rear mounting portion 10 provided at the tip of the rear supporting portion 9 includes a pair of pin mounting portions 24 mounted on the rear supporting portion 9 side and a rear side scraping plate. The support sheave 25 attached to the rear side support portion 4 is provided, and a recess 26 is formed at the attachment position of the support sheave 25 on the rear side scraping plate 4 so as to form a surface at a position away from the rear side support portion 9. There is. A support bracket 27 is provided at the center of the recess 26 so as to project toward the rear support portion 9, and the support sheave 25 is supported by the support bracket 27.

Further, a slide portion 30 is provided at a connection point between the rear support portion 9 and the main body portion 2, so that the rear support portion 9 can be slid up and down with respect to the main body portion 2. The base of the rear support portion 9 and the rear surface of the main body portion 2 are in contact with each other in a vertical plane, and the front portion of the main body portion 2 is below the contact surface 30a with the rear support portion 9. The adjustment bracket 30b is provided so as to project to the vertical. Further, the base of the rear support portion 9 is also provided with an adjustment bracket 30c so as to project forward from the contact surface 30a. Then, the adjusting tool 30d is attached so as to penetrate the adjusting bracket 30b, which is a member on the main body 2 side, and the adjusting bracket 30c, which is a member on the rear side supporting portion 9, in a direction along the vertical. The rear support portion 9 is supported by the main body 2 in a form of being suspended from the adjustment bracket 30b by the adjuster 30d, and is supported on the rear side with respect to the main body 2 by adjusting the degree of tightening of the adjuster 30d. The vertical position of the portion 9 can be adjusted individually. Further, after adjusting the position of the rear support portion 9 with respect to the main body portion 2 by the adjusting tool 30d, the rear side supporting portion 9 and the rear side scraping plate 4 are fixed to the main body portion 2 by a fixture (not shown). It has become.

In this way, also in the rear support portion 9 and the rear mounting portion 10, the eccentricity of the center of gravity with respect to the rotation shaft is improved, and the deviation of the rotation shaft due to an error in manufacturing parts or an assembly error is corrected and the rotation operation is performed. The resistance to the rear side scraping plate 4 is reduced, so that the rotation operation of the rear side scraping plate 4 can be smoothly performed.

The operation of the scraping machine 1 during the scraping run and the return run will be described.

In the initial state before starting the operation for scraping, the scraping machine 1 is located on one end side (right side in FIG. 1) of the tank T which is a settling basin, and the scraping plates 3 and 4 are Both are at the bottom-off angle shown by the alternate long and short dash line in FIG. From here, when tension is applied to the power wire 11 toward the other end side (left side), the operating sheave 13 around which the power wire 11 is wound tries to rotate clockwise.

In the initial state, the stopper 19 attached to the support shaft 14 is in contact with the contact portion 17a at the position on the left side in the drawing with respect to the support shaft 14 (indicated by the alternate long and short dash line in FIG. 7). The clockwise rotation of the shaft 14 is not hindered by the stopper 19. The support shaft 14 rotates clockwise with respect to the main body 2 due to the rotational force applied from the power wire 11 to the operation sheave 13. At this stage, the position of the scraper 1 in the tank T does not move.

As the support shaft 14 rotates, the transmission sheaves 15 and 16 attached to the support shaft 14 also rotate clockwise. The rotation of the transmission sheaves 15 and 16 is transmitted to the driven sheaves 21 and 23 attached to the front and rear scraping plates 3 and 4 via the transmission wires 20 and 22. The driven sheaves 21 and 23 rotate clockwise together with the scraping plates 3 and 4.

The rotation of the support shaft 14 continues until the stopper 19 that rotates with the support shaft 14 reaches the right side in the drawing (the position shown by the solid line and the broken line in FIG. 7) and comes into contact with the contact portion 17a on the right side. When the stopper 19 comes into contact with the member of the contact portion 17a, the support shaft 14 cannot rotate any more and stops rotating, and the transmission sheaves 15 and 16 and the driven sheaves 21 and 23 that are interlocked with the rotation of the support shaft 14 also rotate. Stop. In this stopped state, the scraping plates 3 and 4 stand at the scraping angle shown by the solid line in FIG. 3, and the lower end is in contact with the bottom surface of the tank T.

When the support shaft 14 becomes unable to rotate, the tension of the power wire 11 acts to move the entire scraper 1 provided with the operating unit 12. The scraping machine 1 starts moving along the rail 6 to the other end side (left side in FIG. 1) of the tank T while holding the scraping plates 3 and 4 in an upright state at a scraping angle, and scrapes. The rails 3 and 4 perform a scraping run in which the solid matter at the bottom of the tank T is scraped from one end side to the other end side.

When the scraping machine 1 reaches the other end of the tank T, the scraping machine 1 is returned to the one end side again. At the end of the scraping run, the scraping plates 3 and 4 are at the scraping angle shown by the solid line in FIG. Must not come into contact with the bottom surface of the tank T.

When tension is applied to the power wire 11 toward one end (right side in FIG. 3), the operation sheave 13 tries to rotate counterclockwise. The stopper 19 is in contact with the contact portion 17a at the position on the right side in the drawing (the position shown by the solid line and the broken line in FIG. 7) with respect to the support shaft 14, and the counterclockwise rotation of the support shaft 14 is the stopper. It is not hindered by 19. The support shaft 14 rotates counterclockwise with respect to the main body 2 due to the rotational force applied from the power wire 11 to the operation sheave 13. At this stage, the position of the scraper 1 in the tank T does not move.

In conjunction with the rotation of the support shaft 14, the transmission sheaves 15 and 16 also rotate counterclockwise, and the rotation is the driven sheave 21 attached to the front and rear scraping plates 3 and 4 via the transmission wires 20 and 22. , 23 is transmitted. The driven sheaves 21 and 23 rotate counterclockwise together with the scraping plates 3 and 4.

The rotation of the support shaft 14 continues until the stopper 19 that rotates with the support shaft 14 reaches the left side in the drawing (the position indicated by the alternate long and short dash line in FIG. 7) and comes into contact with the contact portion 17a on the left side. When the stopper 19 comes into contact with the contact portion 17a, the support shaft 14 cannot rotate any more and stops rotating, and the transmission sheaves 15 and 16 and the driven sheaves 21 and 23 also stop rotating. In this stopped state, the scraping plates 3 and 4 are tilted at the bottom separation angle shown by the alternate long and short dash line in FIG. 3, and the lower end is separated from the bottom surface of the tank T.

When the support shaft 14 becomes unable to rotate, the tension of the power wire 11 acts to move the entire scraper 1 provided with the operating unit 12. The scraping machine 1 starts moving along the rail 6 to one end side (right side in FIG. 1) of the tank T while holding the scraping plates 3 and 4 in a state of being tilted at the bottom angle, and returns. Will be.

As described above, in the scraping machine 1 of the present embodiment, the rotation of the operating sheave 13 around which the power wire 11 is wound is transmitted to the driven sheaves 21 and 23 via the transmission wires 20 and 22, and the scraping plate 3 is transmitted. , 4 is linked with the rotation operation. Since the rotation operation is interlocked by a simple mechanism using transmission wires 20 and 22 instead of a complicated link mechanism combining rod-shaped members, the number of parts involved in interlocking and the connection between each part are performed. The number of parts is small, and as a result, the operating resistance generated between the parts can be minimized, and smooth rotational operation of the scraping plates 3 and 4 with low resistance is realized.

Further, since it is a simple mechanism using the transmission wires 20 and 22, the weight of the entire mechanism related to the rotational operation can be suppressed, and it is not necessary to assemble a device having a complicated design. There is also the advantage that the cost can be reduced.

Moreover, as described above, a structure is adopted in which the centers of gravity of the scraping plates 3 and 4 are brought closer to the rotation axis, and the positions of the rotation axes can be adjusted by the slide portions 29 and 30, so that the scratches can be made. The rotation operation of the plates 3 and 4 can be made smoother. Further, since the eccentricity is corrected, an auxiliary weight or the like is not required, and the weight of the device can be further reduced.

Further, in the case of the scraping machine 1 of the present embodiment, the positions of the wheels 5 are set inside the scraping plates 3 and 4 in the left-right direction, and further set to substantially the same height as the scraping plates 3 and 4. ing. This has two advantages for earthquake countermeasures.

The first is the response to seismic retrofitting. In recent years, additional seismic retrofitting may be carried out on existing facilities such as water purification plants. In the case of a settling basin, such seismic retrofitting is carried out, for example, by adding a reinforcing structure to the inner wall of the originally installed settling basin.

Here, in a conventional settling basin or a scraper, for example, a rail is installed along the horizontal direction at an intermediate height with respect to the vertical direction of the left and right inner walls of the settling basin, and the wheels are aligned with the position of the rail and scraped. A model was adopted in which the aircraft was placed on the outermost side in the left-right direction. When the above-mentioned seismic retrofitting is performed on the inner wall of such a sedimentation basin, the rail originally installed on the inner wall is buried in the reinforced structure for seismic resistance and cannot be used. Of course, new rails can be installed in addition to the reinforced structure, but additional construction costs will be incurred.

As in this embodiment, if the wheels 5 are located inside the scraping plates 3 and 4 in the left-right direction and are arranged so as to operate on the rails 6 laid along the bottom surface of the tank T. Even if the reinforcement work as described above is performed on the inner wall of the tank T, the same rail 6 and the scraper 1 can be used as they are.

The second is mitigation of the effects of sloshing. When a tank filled with liquid is subjected to periodic vibration from the outside due to an earthquake or the like, the liquid shakes due to this, but the frequency of the vibration matches the natural frequency determined by the width and depth of the tank. In that case, strong vibration (sloshing) occurs due to resonance. Sloshing may cause liquid leakage from the tank, damage to equipment, etc. depending on the scale, but it is known that the effect of this sloshing is particularly large near the water surface and decreases toward the bottom. In the arrangement of this embodiment, the main body 2 is installed so that the wheel 5 is in contact with the rail 6 laid along the bottom surface of the tank T, and the conventional structure (left and right of the settling pond) as described above is used. The position of the center of gravity of the entire scraper 1 in the tank T is lower than that of the rails installed along the horizontal direction at an intermediate height in the vertical direction of the inner wall of the tank T and the wheels are arranged on the outermost side in the horizontal direction. Therefore, the effect of slosing can be minimized.

As described above, in the present embodiment, the liquid W is provided in the tank T for storing the liquid W, and the tension applied from the power wire 11 holds the scraping plates 3 and 4 at the scraping angle to tank the solid matter. Regarding the scraping machine 1 that scrapes from one end side of T to the other end side and returns to one end side from the other end side of the tank T by holding the scraping plates 3 and 4 at a bottom angle. , The operation sheave 13 around which the power wire 11 is wound, the transmission sheaves 15 and 16 provided coaxially with the operation sheave 13 and rotating together with the operation sheave 13, and the transmission sheaves 15 and 16 attached to the scraping plates 3 and 4. A transmission wire 20 which is wound around a driven sheaves 21 and 23 that rotate together with the plates 3 and 4 and a transmission sheaves 15 and 16 and a driven sheave 21 and 23 and transmits the rotation of the transmission sheaves 15 and 16 to the driven sheaves 21 and 23. It has 22 and. In this way, since the rotational movements are interlocked by a simple mechanism using the transmission wires 20 and 22, the number of parts involved in the interlocking and the number of connections between the parts are small, and as a result, the parts are interlocked with each other. It is possible to minimize the operation resistance generated between them and realize the smooth rotation operation of the scraping plates 3 and 4 with less resistance. In addition, the weight of the entire mechanism related to the rotational operation can be suppressed, and it is not necessary to assemble a device having a complicated design, so that the manufacturing cost related to the scraper 1 can be reduced.

Further, the scraping machine 1 of the present embodiment includes a stopper 19 that limits the rotation range of the operation sheave 13 on the support shaft 14 that forms the rotation axis of the operation sheave 13. In this way, the range of rotational operation of the scraping plates 3 and 4 due to the rotation of the operation sheave 13 can be suitably limited by a simple structure.

The scraping machine 1 of the present embodiment includes wheels 5 inside both ends of the scraping plates 3 and 4 in the left-right direction, and the wheels 5 move on a rail 6 laid along the bottom surface of the tank T. It is configured. In this way, even if the reinforcement work for earthquake resistance is performed on the inner wall of the tank T, the same rail 6 and the scraper 1 can be used as they are. Further, the center of gravity of the scraping machine 1 in the tank T can be set low to suppress the influence of sloshing.

The scraping machine 1 of the present embodiment includes a first transmission sheave 15 and a second transmission sheave 16 as transmission sheaves, and has a front side scraping plate 3 provided in front of the main body 2 as a scraping plate. A rear side scraping plate 4 provided behind the main body 2 is provided, and as a driven sheave, the first driven sheave 21 attached to the front side scraping plate 3 and the rear side scraping plate 4 are attached. A second driven sheave 23 is provided, and as a transmission wire, the rotation of the first transmission wire 20 that transmits the rotation of the first transmission sheave 15 to the first driven sheave 21 and the rotation of the second transmission sheave 16 are performed. It includes a second transmission wire 22 that transmits to the second driven sheave 23. In this way, the above-mentioned action and effect can be obtained in the scraping machine 1 provided with the two front and rear scraping plates 3 and 4.

In the scraping machine 1 of the present embodiment, the scraping plates 3 and 4 are rotatably attached to the support portions 7 and 9 provided so as to project from the main body portion 2, and among the scraping plates 3 and 4, the scraping plates 3 and 4 are rotatably attached. The portions corresponding to the attachment portions 8 and 10 with respect to the support portions 7 and 9 have a recess 26 formed so as to form a surface at a position away from the support portions 7 and 9, and extend from the recess 26 toward the support portions 7 and 9. It is provided with a support bracket 27. By doing so, the center of gravity of the entire scraping plates 3 and 4 approaches the rotation axis, so that the rotating operation of the scraping plates 3 and 4 can be smoothly performed.

The scraping machine 1 of this embodiment includes slide portions 29 and 30 whose positions of the support portions 7 and 9 with respect to the main body portion 2 can be adjusted in the vertical direction. In this way, by appropriately changing the positions of the support portions 7 and 9, errors that occur during the manufacture of each component and the assembly of the components are absorbed, the deviation of the rotation axis is corrected, and the resistance to the rotation operation is corrected. Can be reduced.

In the scraping machine 1 of the present embodiment, the support portions 7 and 9 and the main body portion 2 are in contact with each other on the slide portions 29 and 30 so as to form a surface along the vertical direction, and are in contact with the members on the support portions 7 and 9 side. Adjusters 29c and 30d that penetrate the members on the main body 2 side up and down are provided, and by adjusting the degree of tightening of the adjusters 29c and 30d, the positions of the support portions 7 and 9 with respect to the main body 2 in the vertical direction. Is configured to be adjustable. In this way, the positions of the support portions 7 and 9 with respect to the main body portion 2 can be easily adjusted by the slide portions 29 and 30 having a simple structure.

The scraping machine 1 of the present embodiment includes a front scraping plate 3 provided in front of the main body 2 and a rear scraping plate 4 provided behind the main body 2 as scraping plates. As the support portion, a front side support portion 7 that supports the front side scraping plate 3 and a rear side support portion 9 that supports the rear side scraping plate 4 are provided. In this way, the above-mentioned effect can be obtained in the scraping machine 1 provided with the two front and rear scraping plates 3 and 4.

Therefore, according to the present embodiment, the operation of the scraping plate can be preferably performed with a simple configuration.

It should be noted that the scraping machine of the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

1 Scraping machine 2 Main body 3 Scratching plate (front side scraping plate)
4 Scratching board (rear side scraping board)
5 Wheels 6 Rails 7 Supports (front support)
8 Mounting part (front mounting part)
9 Support part (rear support part)
10 Mounting part (rear side mounting part)
11 Power wire 13 Operation sheave 14 Support shaft 15 Transmission sheave (first transmission sheave)
16 Transmission sheave (second transmission sheave)
19 Stopper 20 Transmission wire (first transmission wire)
21 driven sheave (first driven sheave)
22 Transmission wire (second transmission wire)
23 Driven sheave (second driven sheave)
26 Recess 27 Support bracket 29 Slide part 29a Contact surface 29c Adjuster 30 Slide part 30a Contact surface 30d Adjuster T tank (settling basin)
W liquid (water)

Claims (11)

It is installed in the tank that stores the liquid.
By the tension applied from the power wire, the scraping plate is held at the scraping angle and the solid matter is scraped from one end side to the other end side of the tank, and the scraping plate is held at the bottoming angle. It is a scraping machine that returns from the other end side of the tank to one end side.
The operation sheave around which the power wire is wound and
A transmission sheave that is provided coaxially with the operation sheave and rotates together with the operation sheave.
A driven sheave that is attached to the scraping plate and rotates with the scraping plate,
A scraper comprising a transmission wire that is wound around the transmission sheave and the driven sheave and transmits the rotation of the transmission sheave to the driven sheave. The scraper according to claim 1, wherein the support shaft forming the rotation axis of the operation sheave is provided with a stopper that limits the rotation range of the operation sheave. Wheels are provided inside both ends of the scraping plate in the left-right direction.
The scraper according to claim 1 or 2, wherein the wheels are configured to move on rails laid along the bottom surface of the tank. As the transmission sheave, a first transmission sheave and a second transmission sheave are provided.
The scraping plate includes a front scraping plate provided in front of the main body and a rear scraping plate provided behind the main body.
As the driven sheave, a first driven sheave attached to the front side scraping plate and a second driven sheave attached to the rear side scraping plate are provided.
As the transmission wire, a first transmission wire that transmits the rotation of the first transmission sheave to the first driven sheave and a second transmission wire that transmits the rotation of the second transmission sheave to the second driven sheave. The scraping machine according to any one of claims 1 to 3, further comprising a transmission wire of the above. The scraping plate is rotatably attached to a support portion provided so as to project from the main body portion.
Of the scraping plate, the portion corresponding to the attachment portion to the support portion includes a recess formed so as to form a surface at a position away from the support portion.
The scraper according to any one of claims 1 to 4, further comprising a support bracket extending from the recess toward the support portion. The scraping machine according to any one of claims 1 to 5, further comprising a slide portion capable of adjusting the vertical position of the support portion with respect to the main body portion. The support portion and the main body portion form a surface along the vertical direction in the slide portion and come into contact with each other.
It is provided with an adjusting tool that vertically penetrates the member on the support portion side and the member on the main body portion side.
The scraper according to claim 6, wherein the position of the support portion in the vertical direction with respect to the main body portion can be adjusted by adjusting the degree of tightening of the adjuster. It is installed in the tank that stores the liquid.
By the tension applied from the power wire, the scraping plate is held at the scraping angle and the solid matter is scraped from one end side to the other end side of the tank, and the scraping plate is held at the bottoming angle. It is a scraping machine that returns from the other end side of the tank to one end side.
The scraping plate is rotatably attached to a support portion provided so as to project from the main body portion.
Of the scraping plate, the portion corresponding to the attachment portion to the support portion includes a recess formed so as to form a surface at a position away from the support portion.
A scraping machine including a support bracket extending from the recess toward the support portion. The scraping machine according to claim 8, further comprising a slide portion capable of adjusting the vertical position of the support portion with respect to the main body portion. The support portion and the main body portion form a surface along the vertical direction in the slide portion and come into contact with each other.
It is provided with an adjusting tool that vertically penetrates the member on the support portion side and the member on the main body portion side.
The scraper according to claim 8 or 9, wherein the position of the support portion in the vertical direction with respect to the main body portion can be adjusted by adjusting the degree of tightening of the adjuster. .. The scraping plate includes a front scraping plate provided in front of the main body and a rear scraping plate provided behind the main body.
Any one of claims 8 to 10, wherein the support portion includes a front side support portion that supports the front side scraping plate and a rear side support portion that supports the rear side scraping plate. The scraper described in the section.

Images