JP2021019941A - Scattered object protection device - Google Patents

Abstract

To provide a scattered object protection device installable easily, and capable of protecting people and things from a scattered object from a rotary apparatus by a simple structure.SOLUTION: A scattered object protection device arranged adjacently to a rotary apparatus includes a protection plate having a front face oriented to the rotary apparatus side, and a back face positioned on the opposite side to the front face, and at least one support column having a long direction, having one end in the long direction fixed to a foundation, and constituted so as to support the protection plate from the back face side.SELECTED DRAWING: Figure 3

Description

The present disclosure relates to a scattered object protection device arranged adjacent to a rotating device.

Conventionally, in a rotating device such as an engine (see, for example, Patent Document 1), a fragile portion having a strength inferior to that of other portions exists on the wall surface of the device structure. FIG. 12 is an explanatory diagram for explaining a conventional rotating device. As shown in FIG. 12, the conventional rotating device 011 communicates with the device structure wall surface 014 defining the internal space 013 accommodating the rotating body 012 and the inside and outside of the device structure wall surface 014 provided on the device structure wall surface 014. It is provided with a lid 016 configured to be able to close the through hole 015. The lid 016 is fixed to the device structure wall surface 014 by fastening the corners with bolts 018. In the illustrated example, the lid 016 is formed to be thinner than the device structure wall surface 014, and is a fragile portion 017 in the rotating device 011.

As shown in FIG. 12, when the rotating body 012 housed in the internal space 013 of the rotating device 011 bursts, the fragment of the rotating body 012 becomes a scattered object 012A and penetrates the fragile portion 017 (for example, the lid 016). There is a risk of scattering to the outside of the rotating device 011. Therefore, safety measures against scattered matter 012A from the rotating device 011 are required.

FIG. 13 is an explanatory diagram for explaining safety measures in a conventional rotating device. As shown in FIG. 13, as a conventional safety measure, the fragile portion 017 (for example, the lid 016) may be thickened so that the scattered material 012A does not penetrate. Further, the bolt 018 may be changed to a larger outer diameter so that the bolt 018 fixing the lid 016 to the device structure wall surface 014 does not break due to the impact force when the scattered object 012A collides with the lid 016. is there.

Japanese Unexamined Patent Publication No. 2003-049653

If the lid 016 is thickened, the lid 016 becomes excessively heavy, which causes a problem that it becomes difficult to attach or remove the lid 016. Further, when changing the bolt 018 to a bolt having a large outer diameter, it is necessary to expand the bolt hole 019 already provided in the device structure wall surface 014, but there is also a problem that the above construction is difficult.

In view of the above circumstances, an object of at least one embodiment of the present disclosure is a scattered object that can be easily installed and has a simple structure to protect people and objects from scattered objects from a rotating device. To provide protective equipment.

The scattered object protection device according to the present disclosure is
A scattered object protection device placed adjacent to a rotating device.
A protective plate having a front surface oriented toward the rotating device side and a back surface located on the side opposite to the front surface.
It is provided with at least one support column having a length direction, one end portion in the length direction being fixed to a base, and being configured to support the protective plate from the back surface side.

According to at least one embodiment of the present disclosure, there is provided a scattered object protection device that can be easily installed and has a simple structure and can protect a person or an object from scattered objects from a rotating device.

It is a schematic block diagram of the scattered object protection device which concerns on 1st Embodiment. FIG. 5 is a schematic configuration diagram showing a state in which the scattered object protection device shown in FIG. 1 is viewed from the back side. It is explanatory drawing for demonstrating the time when the scattered object collided with the scattered object protection device which concerns on 1st Embodiment. It is explanatory drawing for demonstrating the time when the scattered object collided with the scattered object protection device. It is explanatory drawing for demonstrating the modification of the flying object protection device which concerns on 1st Embodiment. It is a schematic block diagram which shows the state which looked at the scattered object protection device which concerns on 2nd Embodiment from the back side. It is a schematic block diagram of the scattered object protection device which concerns on 3rd Embodiment. It is a schematic block diagram which shows the state which looked at the scattered matter protection device which concerns on 4th Embodiment from the back side. FIG. 5 is a schematic configuration diagram showing a state in which the scattered object protection device according to the fourth embodiment is viewed from above in the vertical direction. It is a schematic block diagram of the scattered object protection device which concerns on 5th Embodiment. It is explanatory drawing for demonstrating the time when the scattered object collided with the scattered object protection device which concerns on 5th Embodiment. It is explanatory drawing for demonstrating the conventional rotating apparatus. It is explanatory drawing for demonstrating the safety measure in the conventional rotating equipment.

Hereinafter, some embodiments of the present disclosure will be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of the components described as embodiments or shown in the drawings are not intended to limit the scope of the present disclosure, but are merely explanatory examples. Absent.
For example, expressions that represent relative or absolute arrangements such as "in a certain direction", "along a certain direction", "parallel", "orthogonal", "center", "concentric" or "coaxial" are exact. Not only does it represent such an arrangement, but it also represents a state of relative displacement with tolerances or angles and distances to the extent that the same function can be obtained.
For example, expressions such as "same", "equal", and "homogeneous" that indicate that things are in the same state not only represent exactly the same state, but also have tolerances or differences to the extent that the same function can be obtained. It shall also represent the state of existence.
For example, an expression representing a shape such as a quadrangular shape or a cylindrical shape not only represents a shape such as a quadrangular shape or a cylindrical shape in a geometrically strict sense, but also an uneven portion or chamfering within a range in which the same effect can be obtained. The shape including the part and the like shall also be represented.
On the other hand, the expression "includes", "includes", or "has" one component is not an exclusive expression that excludes the existence of another component.
The same reference numerals may be given to the same configurations, and the description thereof may be omitted.

(Scattered object protection device)
FIG. 1 is a schematic configuration diagram of a scattered object protection device according to the first embodiment. FIG. 2 is a schematic configuration diagram showing a state in which the scattered object protection device shown in FIG. 1 is viewed from the back side. As shown in FIGS. 1 and 2, the scattered object protection device 1 according to some embodiments of the present disclosure is a device for protecting a person or an object from the scattered object 12A from the rotating device 11, and is a rotating device. It is arranged adjacent to 11. Here, the rotating device 11 is a device configured to rotatably accommodate the rotating body 12 inside the rotating device 11.

The scattered object protection device 1 is configured to be retrofitted to the rotating device 11 already installed. Further, the scattered object protection device 1 is configured to be removable from the rotating device 11. For example, when performing maintenance work on a device adjacent to the rotating device 11, the worker performing the maintenance work approaches the rotating device 11, so it is necessary to protect the worker from scattered objects 12A from the rotating device 11. is there. Therefore, the scattered object protection device 1 may be installed on the rotating device 11 before the maintenance work of the device adjacent to the rotating device 11, and may be removed from the rotating device 11 after the maintenance work. That is, the scattered object protection device 1 may be temporarily installed on the rotating device 11.

In the illustrated embodiment, as shown in FIG. 1, the scattered object protection device 1 is arranged adjacent to a fragile portion 17 which is inferior in strength to other portions on the device structure wall surface 14 of the rotating device 11. .. In the embodiment shown in FIG. 1, the rotating device 11 has a device structure wall surface 14 that defines an internal space 13 that accommodates the rotating body 12, and a penetration that is provided on the device structure wall surface 14 and connects the inside and outside of the device structure wall surface 14. It includes a lid 16 configured so that the hole 15 can be closed. The lid 16 is fixed to the device structure wall surface 14 by screwing bolts 18 through which the through holes 161 formed at the corners into the bolt holes 19 of the device structure wall surface 14. In the embodiment shown in FIG. 1, the lid 16 is formed to be thinner than the device structure wall surface 14, and is a fragile portion 17 in the rotating device 11. Therefore, the scattered object protection device 1 is arranged adjacent to the lid 16.

Examples of the rotating device 11 described above include an engine including a crankcase for accommodating a crankshaft and a lid for closing a through hole provided in the crankcase. Further, examples of the rotating body include a connecting rod which is mounted on a crankshaft and which converts a reciprocating linear motion of a piston into a rotary motion by interlocking with the crankshaft.

The above-mentioned scattered object protection device 1 includes, for example, as shown in FIG. 1, a protective plate 3 having a front surface 31 oriented toward the rotating device 11 and a back surface 32 located on the side opposite to the front surface 31. It includes at least one support column 4 (vertical rib) configured to support the protective plate 3 from the back surface 32 side. At least one support pillar 4 has a length direction, and one end portion 41 (lower end portion) in the length direction is fixed to the base 20. That is, at least one support pillar 4 is cantilevered and supported by the base 20.

As shown in FIG. 1, the base 20 has a floor surface 21 on which the scattered object protection device 1 can be placed. The floor surface 21 extends along the horizontal direction. "Along a certain direction" includes not only a certain direction but also a direction inclined with respect to a certain direction (for example, within ± 45 ° with respect to a certain direction). The base 20 is provided with higher rigidity than the scattered object protection device 1. The base 20 may be, for example, a floor plate having an installation surface on which the rotating device 11 is installed, or may be a part of the rotating device 11. Further, the base 20 may be composed of a plurality of members.

In the illustrated embodiment, the base 20 is a horizontal extension having an upper surface 221 projecting from the device structure wall surface 14 of the rotating device 11 in the horizontal direction (horizontal direction in FIG. 1) and extending along the horizontal direction. The existing part 22 is included. The scattered object protection device 1 is mounted on the upper surface 221 of the horizontal extending portion 22. As shown in the figure, when a part of the scattered object protection device 1 protrudes from the upper surface 221 of the horizontal extending portion 22, a spacer 23 is provided to remove the part protruding from the upper surface 221 of the scattered object protection device 1. It may be placed on the upper surface 231 of the spacer 23. That is, the base 20 may include the horizontally extending portion 22 and the spacer 23. The spacer 23 is provided adjacent to the horizontally extending portion 22 so that the height position of the upper surface 231 extending along the horizontal direction of the spacer 23 is aligned with the height position of the upper surface 221 of the horizontally extending portion 22. Be done.

In the illustrated embodiment, the scattered object protection device 1 is provided between the support pillar 4 and the base 20 as shown in FIG. 1, for example, and is configured to fix the support pillar 4 to the base 20. It is further provided with a fixing plate 5. In another embodiment, the support pillar 4 may be directly fixed to the base 20 without passing through the fixing plate 5.

In the illustrated embodiment, the protective plate 3 is formed in the shape of a rectangular plate having a length direction and a width direction, and the length direction is arranged along the vertical direction (vertical direction in FIG. 1). There is. The protective plate 3 is arranged so that the front surface 31 faces the fragile portion 17 (for example, the lid 16). The protective plate 3 is arranged so that its width direction (left-right direction in FIG. 2) is parallel to the outer wall surface of the device structure wall surface 14 and the lid 16 and along the horizontal direction.

In the illustrated embodiment, at least one support column 4 is formed in a plate shape having a length direction and a width direction, and the length direction is arranged along the vertical direction. The support columns 4 are arranged in a direction in which the width direction of the support columns 4 (left-right direction in FIG. 1) is orthogonal to the width direction of the protective plate 3 and along the horizontal direction.

In the illustrated embodiment, for example, as shown in FIGS. 1 and 2, the protective plate 3 is attached to the support column 4 so as not to be displaced from the support column 4. In the embodiment shown in FIGS. 1 and 2, the protective plate 3 is integrated with the veneer portion 33 protruding from the upper end edge portion 321 of the back surface 32 toward the side away from the rotating device 11 (right side in FIG. 1) by welding. It is provided in. The support column 4 is integrally provided by welding with the upper end plate portion 43 provided on the other end portion 42 (upper end portion) in the length direction. The protective plate 3 is supported by placing the veneer portion 33 on the upper end plate portion 43 and fastening the veneer portion 33 and the upper end plate portion 43 with a fastening member 24 (including, for example, bolts 24A and nuts 24B). It is fixed to the pillar 4. In another embodiment, the protective plate 3 may not be attached to the support column 4, or may be leaned against the support column 4.

The fixing plate 5 is formed in a plate shape and is arranged on the floor surface 21 of the base 20. In the illustrated embodiment, as shown in FIG. 1, the fixing plate 5 has a fixing portion 51 fixed to one end 41 of the support column 4 and a rotating device 11 side (FIG. 1) with respect to the front surface 31 of the protective plate 3. It includes an extending portion 52 extending toward (left side in 1). The fixing plate 5 is fastened to the base 20 at the extending portion 52.

In the embodiment shown in FIG. 1, in the support column 4, the end surface 411 of one end 41 of the support column 4 abuts on the upper surface 53 of the fixed portion 51, and the lower end edge 412 of the one end 41 and the upper surface 53 of the fixed portion 51. Is provided integrally with the fixing portion 51 by being joined by welding. Further, in the fixing plate 5, a through hole 521 that penetrates the extending portion 52 along the thickness direction (vertical direction in FIG. 1) of the fixing plate 5 is formed, and the through hole 521 is inserted through the fixing plate 5 and the base 20 is inserted. It is fastened to the base 20 by a fastening member 25 (for example, a bolt 25A) having a male screw portion 251 screwed into the female screw hole 201 formed in.

In another embodiment, the support column 4 may be fixed to the fixing plate 5 by a method other than welding (for example, fastening with a fastening member such as a bolt). Further, the fixing plate 5 may be fixed to the base 20 on a side farther from the rotating device 11 than the front surface 31 of the protective plate 3.

As described above, the scattered object protection device 1 according to some embodiments includes the above-mentioned protective plate 3 having a front surface 31 and a back surface 32 and one end portion 41 in the length direction, as shown in FIG. 1, for example. Is fixed to the base 20, and includes at least one support column 4 described above, which is configured to support the protective plate 3 from the back surface 32 side.

As shown in FIG. 1, when the rotating body 12 housed in the internal space 13 of the rotating device 11 bursts, the fragment of the rotating body 12 becomes a scattered object 12A, and the fragile portion 17 of the rotating device 11 (for example, a lid). It penetrates 16) and scatters to the outside of the rotating device 11.

According to the above configuration, the scattered object protection device 1 arranged adjacent to the rotating device 11 supports the protective plate 3 whose front surface 31 is oriented toward the rotating device 11 and the protective plate 3 from the back surface 32 side. It has a simple structure including at least one support column 4 configured as described above. In the scattered object protection device 1, when the scattered object 12A is scattered from the rotating device 11 to the outside due to, for example, a burst of the rotating body 12, the front surface 31 of the protective plate 3 receives the scattered object 12A. Since one end 41 in the length direction of the protective plate 3 is supported from the back surface 32 side by the support pillar 4 fixed to the base 20, the moving direction of the scattered object 12A colliding with the front surface 31 is in a safe direction (for example). It can be directed upwards or downwards in the vertical direction. That is, the protective plate 3 can eliminate or reduce the velocity component of the scattered object 12A before the collision in the moving direction on the front surface 31. By directing the moving direction of the scattered object 12A to a safe direction by the scattered object protection device 1, it is possible to protect a person or an object from the scattered object 12A. Further, as shown in FIG. 1, the scattered object protection device 1 can be easily installed because the installation is completed by placing the scattered object protection device 1 on the base 20 and fixing the support pillar 4 to the base 20. can do.

As shown in FIG. 1, in the scattered object protection device 1, when the scattered object 12A collides with the front surface 31 of the protective plate 3, the impact force F of the scattered object 12A is applied to the support pillar 4 in the length direction and other directions. It acts as a bending load M that bends the end portion 42 side toward the back surface. The bending load M includes a compressive load CL acting on the back surface side (the side away from the rotating device 11, the right side in FIG. 1) of one end 41 in the length direction of the support column 4. As shown in FIG. 1, the scattered object protection device 1 is supported by the support column 4 when the support column 4 is configured so as not to be bent and deformed due to a design impact load (bending load M). Since the plate 3 can receive the scattered material 12A, the kinetic energy of the scattered material 12A can be effectively absorbed.

FIG. 3 is an explanatory diagram for explaining when a scattered object collides with the scattered object protection device according to the first embodiment. In FIG. 3, the protective plate 3 and the support column 4 before being deformed by the bending load M (compressive load CL) are shown by the alternate long and short dash lines. As shown in FIG. 3, when the support column 4 is configured to be bendable and deformable by a design impact load, the support column 4 is the back surface of one end 41 in the length direction. By buckling due to the compressive load CL acting on the side and bending toward the back surface, a part of the kinetic energy of the scattered material 12A can be absorbed. As shown by the alternate long and short dash line in FIG. 2, the support column 4 buckles in the direction along the width direction of the protective plate 3 due to the compressive load CL, so that a part of the kinetic energy of the scattered material 12A is effective. Can be absorbed by. Further, as shown in FIG. 3, the scattered object protection device 1 is a protective plate while suppressing the kinetic energy received by the scattered object protection device 1 from the scattered object 12A by bending the support pillar 4 toward the back surface. The moving direction of the scattered object 12A colliding with 3 can be directed to a safe direction (for example, upward in the vertical direction).

In some embodiments, for example, as shown in FIG. 1, the above-mentioned at least one support column 4 has at least one support column 4 on the other end 42 (upper end) side of the center in the length direction. In addition, a tapered portion 421 configured so that the width dimension gradually decreases toward the other end portion 42 side is formed. At least one support pillar 4 is cantilevered and supported by the base 20. Therefore, when the impact force F is applied from the scattered object 12A, the load is concentrated on the one end 41 side in the length direction. Therefore, by providing the tapered portion 421 on the other end portion 42 side in the length direction in which the load does not concentrate and act, it is possible to suppress the weighting of the support column 4. By suppressing the weight increase of the support pillar 4, the scattered object protection device 1 can be easily installed.

FIG. 4 is an explanatory diagram for explaining when a scattered object collides with the scattered object protection device.
As described above, in some embodiments, the scattered object protection device 1 described above comprises a fixing portion 51 fixed to one end 41 of the support column 4 and a protective plate 3 as shown in FIG. 1, for example. It further includes the above-mentioned fixing plate 5 including an extending portion 52 extending from the front surface 31 toward the rotating device 11 side (left side in FIG. 1). The fixing plate 5 is fastened to the base 20 at the extending portion 52.

In this case, the impact force F of the scattered object 12A is fixed as a bending load M such that the end portion (fixing portion 51) of the fixing plate 5 on the side away from the device (right side in FIG. 1) is pressed against the base 20. It acts to deform the support column 4 more than the plate 5. On the other hand, as shown in FIG. 4, if the fixing plate 5 is fastened to the base 20 on the side farther from the rotating device 11 than the back surface 32 of the protective plate 3, the impact of the scattered object 12A The force F acts to deform the fixing plate 5 more than the supporting column 4 as a bending load such that the end portion (extending portion 52) of the fixing plate 5 on the rotating device 11 side and the support column 4 are lifted from the base 20. To do. Therefore, according to the above configuration, the impact force F of the scattered object 12A acts to deform the support column 4, so that the above-mentioned compression load CL is effectively applied to the back surface side of one end 41 of the support column 4. It can be generated, and bending deformation of the support column 4 in the back direction can be promoted.

In some embodiments, the at least one support column 4 described above is separated from the first support column 4A and the first support column 4A in the width direction of the protective plate 3, as shown in FIG. Includes a second support column 4B, which is arranged. The scattered matter 12A from the rotating device 11 is configured to collide with the position between the first support pillar 4A and the second support pillar 4B on the protective plate 3.

The range SR (assumed scattering range) surrounded by the alternate long and short dash line in FIG. 2 is a range in which the scattered object 12A from the rotating device 11 is assumed to collide with the protective plate 3 by design. In the illustrated embodiment, the rotation axis of the rotating body 12 extends along a direction parallel to the width direction (left-right direction in FIG. 2) of the protective plate 3. Since the scattered object 12A mainly scatters along the rotation tangential direction of the rotating body 12, the assumed scattering range SR is greatly expanded upward and downward in the vertical direction as compared with the through hole 15 of the rotating device 11. It has become. The first support pillar 4A and the second support pillar 4B are arranged at positions on the protective plate 3 between the first support pillar 4A and the second support pillar 4B so that the assumed scattering range SR is accommodated.

According to the above configuration, the protective plate is configured so that the scattered matter 12A from the rotating device 11 collides with the position between the first support pillar 4A and the second support pillar 4B on the protective plate 3. Suppresses that the scattered object 12A collides with the position where the first support pillar 4A and the second support pillar 4B exist in No. 3 and the kinetic energy is directly transmitted to the first support pillar 4A and the second support pillar 4B. can do. By suppressing the direct transfer of kinetic energy to the first support column 4A and the second support column 4B, the fixed portion (for example, one end) of the first support column 4A and the second support column 4B with the base 20. It is possible to prevent an excessive load from acting on the part 41). Further, when the scattered object 12A collides between the first support pillar 4A and the second support pillar 4B in the protective plate 3, the scattered object protection device 1 is scattered by bending the protective plate 3 toward the back surface 32 side. The kinetic energy received from the object 12A can be suppressed, and the load applied to the fixed portion of the first support column 4A and the second support column 4B with the base 20 can be relaxed.

The scattered object protection device 1 may increase or decrease the number of the support columns 4 so that appropriate rigidity can be obtained in order to prevent the scattered object 12A from scattering. That is, in another embodiment, the scattered object protection device 1 may include one or a plurality of support columns 4 of three or more.

FIG. 5 is an explanatory diagram for explaining a modified example of the scattered object protection device according to the first embodiment. In some embodiments, as shown in FIG. 5, the protective plate 3 described above has an upper end 34 (top) of the upper end 151 (top) of the through hole 15 and an upper end 162 (top) of the lid 16. ) Is located above in the vertical direction. In this case, the scattered object 12A has an upward velocity component in the vertical direction, and even when the scattered object 12A scatters diagonally upward after passing through the through hole 15, the scattered object 12A is received by the front surface 31 of the protective plate 3. be able to. Therefore, according to the above configuration, the protective plate 3 can receive the scattered object 12A more reliably, so that the protective performance of the scattered object protection device 1 can be improved. Further, according to the above configuration, the length of the support pillar 4 supporting the protective plate 3 in the length direction can be increased to reduce the load capacity of the support pillar 4. When the load capacity of the support column 4 is reduced, the support column 4 is easily deformed by the bending load M described above, so that an excessive load acts on the fixed portion (one end portion 41) of the support column 4 with the base 20. Can be suppressed.

FIG. 6 is a schematic configuration diagram showing a state in which the scattered object protection device according to the second embodiment is viewed from the back side.
In some embodiments, as shown in FIG. 6, at least one support column 4 described above is separated from the first support column 4A described above and the first support column 4A in the width direction of the protective plate 3. The above-mentioned second support column 4B, which is arranged in the above-mentioned manner, is included. The scattered object protection device 1 described above further includes a reinforcing member 6 (horizontal rib) configured to connect the first support column 4A and the second support column 4B.

In the illustrated embodiment, as shown in FIG. 6, the reinforcing member 6 is formed in the shape of a rectangular plate having a length direction, and the length direction of the reinforcing member 6 is the width direction of the protective plate 3 ( It extends from the first support column 4A to the second support column 4B along the left-right direction in FIG. In the reinforcing member 6, one surface 61 in the thickness direction of the reinforcing member 6 is attached to the first support column 4A and the second support column 4B at a position separated upward from the floor surface 21 of the base 20 in the vertical direction. They are placed in contact with each other. Then, the reinforcing member 6 has one end 62 in the length direction joined to the first support column 4A by welding, and the other end 63 in the length direction joined to the second support column 4B by welding. , The first support pillar 4A and the second support pillar 4B are connected. In another embodiment, the reinforcing member 6 may be fixed to the first support column 4A or the second support column 4B by a method other than welding (for example, fastening by a fastening member).

According to the above configuration, the scattered object protection device 1 is a reinforcing member 6 configured to connect the first support pillar 4A and the second support pillar 4B arranged apart from each other in the width direction of the protection plate 3. Is further equipped. In this case, the reinforcing member 6 is used to improve the rigidity of the portion 44 (see FIG. 6) connected to the reinforcing member 6 in the first support column 4A and the second support column 4B with respect to the bending load M in the back direction. Can be done. Further, by adjusting the position CP (vertical length from the floor surface 21 to the lower end 64 of the reinforcing member 6) connected to the first support column 4A and the second support column 4B of the reinforcing member 6, the first support column is formed. The buckling length of the 4A and the second support column 4B (the length of the portion deformed by the bending load M described above) can be adjusted. By adjusting the buckling length of the first support column 4A and the second support column 4B, the bending deformation amount of the first support column 4A and the second support column 4B due to the impact force F of the scattered object 12A can be adjusted. Therefore, the moving direction of the scattered object 12A that collides with the protective plate 3 can be directed to a more accurate and safe direction.

For example, the buckling length can be lengthened by increasing the position CP connected to the first support column 4A and the second support column 4B of the reinforcing member 6, and the first support by the impact force F of the scattered object 12A. The amount of bending deformation of the column 4A and the second support column 4B can be increased. Further, by lowering the CP, the buckling length can be shortened, and the amount of bending deformation of the first support column 4A and the second support column 4B due to the impact force F of the scattered object 12A can be reduced. it can.

FIG. 7 is a schematic configuration diagram of the scattered object protection device according to the third embodiment.
In some embodiments, as shown in FIG. 7, at least one support column 4 described above is fixed to the protective plate 3 along the length direction of the support column 4.

In the illustrated embodiment, at least one support column 4 described above is fixed to the protective plate 3 by welding as shown in FIG. In this case, the above-mentioned scattered object protection device 1 does not require the above-mentioned veneer portion 33 and the above-mentioned fastening member 24.
In the embodiment shown in FIG. 7, in the above-mentioned scattered object protection device 1, the end portion 45 of the support pillar 4 on the rotating device 11 side is brought into contact with the back surface 32 of the protection plate 3, and the edge portion 451 of the end portion 45 is brought into contact with the back surface 32. The first welded portion WP1 that joins the back surface 32 and the back surface 32 by welding along the length direction of the support column 4 and the lower end 35 of the protective plate 3 are brought into contact with the upper surface of the fixing plate 5 and their edges are welded. It is provided with a second welded portion WP2 to be joined. That is, the protective plate 3 is fixed not only to the support pillar 4 but also to the fixing plate 5 by welding. In this case, the rigidity of the support column 4 can be improved as compared with the case where the protective plate 3 is fixed only to the support column 4.

According to the above configuration, since the support column 4 is fixed to the protective plate 3 along the length direction, the rigidity of the support column 4 can be improved. Here, if the impact force F received from the scattered object 12A is large, the support column 4 may break due to the load concentrated on one end 41 in the length direction of the support column 4. The stress concentration range SC, which is the range in which the load is concentrated, is surrounded by a two-dot chain line in FIG. The stress concentration range SC exists on the rotating device 11 side at one end 41 in the length direction of the support column 4. According to the above configuration, the breakage of the support column 4 can be suppressed by improving the rigidity of the support column 4. Further, by suppressing the breakage of the support column 4, the allowable bending deformation amount of the support column 4 can be increased, so that the support column 4 can absorb a larger amount of the kinetic energy of the scattered matter 12A.

In the embodiment shown in FIG. 7, the above-mentioned first welded portion WP1 was present on both the one end 41 side and the other end 42 side in the length direction of the support column 4, but the load was applied. It may be present only on the end 41 side in the length direction of the support pillar 4 in which the concentration is concentrated. Further, when the support column 4 has a desired rigidity, it is not necessary to provide the first welded portion WP1 and the second welded portion WP2.

FIG. 8 is a schematic configuration diagram showing a state in which the scattered object protection device according to the fourth embodiment is viewed from the back side. FIG. 9 is a schematic configuration diagram showing a state in which the scattered object protection device according to the fourth embodiment is viewed from above in the vertical direction.
In some embodiments, the at least one support column 4 described above is located at a position distant from one end 36 in the width direction of the protective plate 3 to the other side in the width direction, as shown in FIGS. Includes a one-sided support column 4C configured to support the protective plate 3 in. The above-mentioned scattered object protection device 1 is a connecting plate 7 configured to connect a region 37 between the one-sided end portion 36 and the one-sided support pillar 4C of the protective plate 3 and another device 26. Is further equipped.

The one-side support column 4C described above is a support column 4 (4A, 4B) arranged closest to the end portion 36. As shown in FIG. 8, the end portion 36 may be an end portion 36A located on the left side when the protective plate 3 is viewed from the back surface 32 side, or may be an end portion 36B located on the right side.

In the illustrated embodiment, as shown in FIGS. 8 and 9, the other device 26 includes the above-mentioned scattered object protection device 1. That is, the two scattered object protection devices 1 are arranged apart from each other along the width direction of the protection plate 3. The scattered object protection device 1 located on the right side in FIG. 8 has at least one penetrating the protection plate 3 in the region 37 (37A) between the end portion 36A and the one-side support pillar 4C of the protection plate 3 (FIG. 8). (4) Through holes 38 (38A) are formed. The scattered object protection device 1 located on the left side in FIG. 8 has at least one penetrating the protection plate 3 in the region 37 (37B) between the end portion 36B and the one-side support pillar 4C of the protection plate 3 (FIG. 8). Through holes 38 (38B) of the middle four) are formed. The through holes 38 (38A, 38B) are formed below the center in the length direction of the protective plate 3. The connecting plate 7 is formed in a rectangular plate shape having a length direction. In the connecting plate 7, one end 71 in the length direction abuts on the region 37B of the scattered object protection device 1 located on the left side in FIG. 8 from the back surface 32 side, and the other end 72 in the length direction is in FIG. It is in contact with the area 37A of the scattered object protection device 1 located on the middle right side from the back surface 32 side. That is, the connecting plate 7 extends from the area 37 of one scattered object protection device 1 to the area 37 of the other scattered object protection device 1.

In the illustrated embodiment, one end 71 in the length direction of the connecting plate 7 is fastened to the region 37B of the scattered object protection device 1 located on the left side in FIG. 9 by a fastening member 27. In the embodiment shown in FIG. 9, at least one through hole 711 is formed at one end 71 in the length direction of the connecting plate 7. The fastening member 27 includes a bolt 27A through which the through hole 711 and the through hole 38B formed in the region 37B are inserted, and a nut 27B screwed into the bolt 27A on the side opposite to the insertion side of the bolt 27A. There is.

In the illustrated embodiment, the other end 72 in the length direction of the connecting plate 7 is fastened to the region 37A of the scattered object protection device 1 located on the right side in FIG. 9 by a fastening member 27. In the embodiment shown in FIG. 9, at least one through hole 721 is formed at the other end 72 of the connecting plate 7 in the length direction. The fastening member 27 includes a bolt 27C through which the through hole 721 and the through hole 38A formed in the region 37A are inserted, and a nut 27D screwed into the bolt 27C on the side opposite to the insertion side of the bolt 27C. There is. In this case, since the protective plate 3 is supported by the other scattered object protection device 1 via the connecting plate 7, the impact load (bending load M) received by the scattered object protection device 1 is protected by the other scattered object protection device 1. It can be dispersed in the device 1.

In another embodiment, the other device 26 may include a device other than the scattered object protection device 1. In the embodiment shown in the figure, the other device 26 further includes the rotating device 11 described above, as shown in FIG. That is, the connecting plate 7 is configured to connect the above-mentioned region 37 of the protective plate 3 and the rotating device 11. In the illustrated embodiment, the connecting plate 7 is fixed to the device structure wall surface 14 of the rotating device 11 by the connecting device 8 as shown in FIGS. 8 and 9. In addition, in some other embodiments, the other device 26 may include only the rotating device 11.

As shown in FIG. 9, the connecting device 8 is fixed to the rod-shaped member 81 fixed to the device structure wall surface 14, and also inserts the through hole 701 formed in the center of the connecting plate 7. It includes a connecting member 82 including an insertion portion 823, and a nut 83 configured to be screwed into the insertion portion 823 of the connecting member 82.

In the illustrated embodiment, the rod-shaped member 81 is fixed to the device structure wall surface 14 by screwing the male screw portion 811 formed on one side in the length direction into the female thread hole 141 formed on the device structure wall surface 14. Has been done. The rod-shaped member 81 has a male screw portion 812 formed on the other side in the length direction. The connecting member 82 includes a fastening portion 822 formed with a female screw hole 821 configured to be screwed into the male screw portion 812, and an insertion portion 823 described above. In the embodiment shown in FIG. 9, the insertion portion 823 is configured to have an outer diameter smaller than that of the fastening portion 822, and the connecting member 82 is a connecting portion 825 connecting the fastening portion 822 and the insertion portion 823. It further includes a connecting portion 825 configured so that the outer diameter gradually decreases from the fastening portion 822 side to the insertion portion 823 side. The fastening portion 822 is inserted into the through hole 701 of the connecting plate 7 from the rotating device 11 side, and the nut 83 is screwed into the male screw portion 824 formed at the tip portion protruding from the through hole 701 to form the connecting plate 7. It has been concluded. In this case, since the protective plate 3 is supported by the rotating device 11 via the connecting plate 7, the impact load (bending load M) received by the scattered object protection device 1 can be dispersed to the rotating device 11. ..

According to the above configuration, the scattered object protection device 1 is simple by connecting the region 37 between the one-sided end portion 36 and the one-sided support column 4C and the other device 26 by the connecting plate 7. The rigidity of the protective plate 3 can be improved by the structure. By improving the rigidity of the protective plate 3, the protective plate 3 can receive the scattered matter 12A more reliably, so that the protective performance of the scattered matter protection device 1 can be improved.

FIG. 10 is a schematic configuration diagram of the scattered object protection device according to the fifth embodiment. FIG. 11 is an explanatory diagram for explaining when a scattered object collides with the scattered object protection device according to the fifth embodiment.
In some embodiments, as shown in FIG. 10, the protective plate 3 described above is provided such that the front surface 31 is inclined at an acute angle with respect to the base 20. That is, the other end side (upper end 34 side) of the protective plate 3 in the length direction is inclined toward the rotating device 11 side rather than the one end side (lower end 35 side) in the length direction. In the illustrated embodiment, as shown in FIG. 10, at least one support column 4 described above has the other end 42 side in the length direction inclined toward the rotating device 11 side rather than the one end 41 side in the length direction. doing.

According to the above configuration, the protective plate 3 of the scattered object protection device 1 is provided so that the front surface 31 is inclined at an acute angle with respect to the base 20. That is, the other end side (upper end 34 side) of the protective plate 3 in the length direction is inclined toward the rotating device 11 side rather than the one end side (lower end 35 side). As shown in FIG. 10, in the scattered object protection device 1, when the support column 4 is configured so as not to be bent and deformed due to a design impact load (bending load), the protective plate 3 inclined toward the rotating device 11 side is provided. Since the scattered object 12A can be bounced downward, the protective performance of the scattered object protection device 1 can be improved. Further, as shown in FIG. 11, when the support column 4 is configured to be bendable and deformable due to a design impact load, the scattered object protection device 1 has an allowable bending angle and an allowable bending angle in the back direction of the support column 4. Since the amount of bending deformation can be increased, the support column 4 can absorb a larger amount of kinetic energy of the scattered matter 12A. That is, the support pillar 4 that supports the protective plate 3 provided so that the front surface 31 is inclined at an acute angle with respect to the base 20 as shown in FIG. 10 has the support pillar 4 with respect to the base 20 as shown in FIG. Compared to the support column 4 that supports the protective plate 3 extending in the vertical direction, the allowable bending angle and the allowable bending deformation amount of the support column 4 in the back surface direction can be increased by the inclination of the protective plate 3. ..

The present disclosure is not limited to the above-described embodiment, and includes a modified form of the above-described embodiment and a combination of these embodiments as appropriate.

The contents described in some of the above-described embodiments are grasped as follows, for example.

1) The scattered object protection device (1) according to at least one embodiment of the present disclosure is
A scattered object protection device (1) arranged adjacent to the rotating device (11).
A protective plate (3) having a front surface (31) oriented toward the rotating device (11) and a back surface (32) located on the side opposite to the front surface (31).
At least one having a length direction, one end portion (41) in the length direction being fixed to the base (20), and the protective plate (3) being supported from the back surface (32) side. It is provided with one support pillar (4).

According to the configuration of 1) above, the scattered object protection device arranged adjacent to the rotating device is configured to support the protective plate whose front surface is oriented toward the rotating device and the protective plate from the back side. It has a simple structure with at least one support column. The scattered object protection device is adapted so that the front surface of the protective plate receives the scattered object when the scattered object is scattered from the rotating device to the outside due to, for example, a burst of a rotating body. Since one end of the protective plate in the length direction is supported from the back side by a support pillar fixed to the base, the moving direction of the scattered matter colliding with the front is in a safe direction (for example, above or below in the vertical direction). Can be turned to. By directing the moving direction of the scattered object in a safe direction by the scattered object protection device, it is possible to protect people and objects from the scattered object. Further, the scattered object protection device can be easily installed because the installation is completed by mounting the scattered object protection device on the base and fixing the support pillars to the base.

In the above-mentioned scattered object protection device, when a scattered object collides with the front surface of the protective plate, the impact force of the scattered object acts as a bending load for bending the other end side in the length direction toward the back surface of the support column. .. The bending load includes a compressive load acting on the back surface side of one end portion in the length direction of the support column. In the scattered object protection device, when the support column is configured so that it cannot be bent and deformed due to a design impact load (bending load), the protective plate supported by the support column can catch the scattered object and therefore scatter. It can effectively absorb the kinetic energy of an object.

Further, in the above-mentioned scattered object protection device, when the support column is configured to be bendable and deformable due to a design impact load, the support column buckles due to a compressive load acting on the back surface side of one end in the length direction. By bending toward the back, a part of the kinetic energy of the scattered matter can be absorbed. In addition, the scattered object protection device bends the support pillar toward the back surface, so that the moving direction of the scattered object that collides with the protective plate can be safely directed while suppressing the kinetic energy received by the scattered object protection device from the scattered object. Can be turned to.

2) In some embodiments, the scattered object protection device (1) described in 1) above is
A fixing portion (51) fixed to the one end portion (41) of the support pillar (4) and a fixing portion (51) extending toward the rotating device (11) side from the front surface (31) of the protective plate (3). Further provided with a fixing plate (5) including an extending portion (52) to be provided.
The fixing plate (5) is fastened to the base (20) at the extending portion (52).

According to the configuration of 2) above, the fixing plate includes one end of the support column, a fixing portion to be fixed, and an extending portion extending toward the rotating device side from the front surface of the protective plate, and extends. It is fastened to the base in the department. In this case, the impact force of the scattered object acts to deform the support column rather than the fixed plate as a bending load that presses the end portion of the fixed plate away from the device against the base. On the other hand, if the fixing plate is fastened to the base on the side farther from the rotating device than the back surface of the protective plate, the impact force of the scattered matter is applied to the end or support of the fixing plate on the rotating device side. It acts to deform the fixing plate rather than the support column as a bending load that causes the column to rise from the base. Therefore, according to the above configuration, since the impact force of the scattered object acts to deform the support column, the above-mentioned compressive load can be effectively generated on the back surface side of one end of the support column. Bending deformation of the support column in the back direction can be promoted.

3) In some embodiments, the scattered object protection device (1) according to 1) or 2) above.
The at least one support pillar (4) is
The first support pillar (4A) and the second support pillar (4B) arranged apart from the first support pillar (4A) in the width direction of the protective plate (3) are included.
The structure is such that the scattered material (12A) from the rotating device (11) collides with the position between the first support pillar (4A) and the second support pillar (4B) on the protective plate (3). Was done.

According to the configuration of 3) above, since the scattered matter from the rotating device collides with the position between the first support column and the second support column on the protective plate, the first support column on the protective plate is configured. It is possible to prevent the scattered object from colliding with the position where the support column or the second support column exists and directly transfer the kinetic energy to the first support column or the second support column. By suppressing the direct transfer of kinetic energy to the first support column and the second support column, an excessive load acts on the fixed portion of the first support column and the base of the second support column. It can be suppressed. In addition, when a scattered object collides between the first support pillar and the second support pillar in the protective plate, the protective plate is bent toward the back side to suppress the kinetic energy received from the scattered object by the scattered object protection device. As a result, the load applied to the fixed portion of the first support column and the base of the second support column can be relaxed.

4) In some embodiments, the scattered object protection device (1) according to any one of 1) to 3) above.
The at least one support pillar (4) is
The first support pillar (4A) and the second support pillar (4B) arranged apart from the first support pillar (4A) in the width direction of the protective plate (3) are included.
The above-mentioned scattered object protection device (1) is
A reinforcing member (6) configured to connect the first support column (4A) and the second support column (4B) is further provided.

According to the configuration of 4) above, the scattered object protection device further includes a reinforcing member configured to connect the first support column and the second support column arranged apart from each other in the width direction of the protective plate. .. In this case, the reinforcing member can improve the rigidity of the portion of the first support column and the second support column connected to the reinforcing member against a bending load in the back surface direction. Further, the buckling length of the first support column and the second support column can be adjusted by adjusting the position (restraint position) of the reinforcing member connected to the first support column and the second support column. By adjusting the buckling length of the first support column and the second support column, the bending deformation amount of the first support column and the second support column due to the impact force of the scattered object can be adjusted, so that the collision with the protective plate. It is possible to direct the moving direction of the scattered matter in a more accurate and safe direction.

5) In some embodiments, the scattered object protection device (1) according to any one of 1) to 4) above.
The at least one support column (4) is fixed to the protective plate (3) along the length direction.

According to the configuration of 5) above, since the support column is fixed to the protective plate along the length direction, the rigidity of the support column can be improved. Here, if the impact force received from the scattered object is large, the support column may break due to the load concentrated on one end in the length direction of the support column. According to the above configuration, it is possible to suppress the breakage of the support column by improving the rigidity of the support column. Further, by suppressing the breakage of the support column, the allowable bending deformation amount of the support column can be increased, so that the support column can absorb a larger amount of the kinetic energy of the scattered matter.

6) In some embodiments, the scattered object protection device (1) according to any one of 1) to 5) above.
The at least one support pillar (4) supports the protective plate (3) at a position separated from one end (36) in the width direction of the protective plate (3) to the other side in the width direction. Includes one-sided support column (4C) configured to
The scattered object protection device (1) includes a region (37) between the one-sided end (36) and the one-sided support pillar (4C) in the protection plate (3), and another device (26). ) Is further provided with a connecting plate (7) configured to connect with.

According to the configuration of 6) above, the scattered object protection device is protected by a simple structure by connecting the area between the end on one side and the support column on one side and the other device by a connecting plate. The rigidity of the plate can be improved. By improving the rigidity of the protective plate, the protective plate can receive scattered objects more reliably, so that the protective performance of the scattered object protection device can be improved.

7) In some embodiments, the scattered object protection device (1) according to any one of 1) to 6) above.
The protective plate (3) is provided so that the front surface (31) is inclined at an acute angle with respect to the base (20).

According to the configuration of 7) above, the protective plate of the scattered object protection device is provided so that the front surface is inclined at an acute angle with respect to the base. That is, the other end side of the protective plate in the length direction is inclined toward the rotating device side rather than the one end side. In the above-mentioned scattered object protection device, when the support column is configured so that it cannot be bent and deformed due to a design impact load (bending load), the protective plate inclined toward the rotating device can bounce the scattered object downward. The protection performance of the scattered object protection device can be improved. Further, when the support column is configured to be bendable and deformable by a design impact load, the scattered object protection device can increase the allowable bending angle and the allowable bending deformation amount in the back direction of the support column. , The support column can absorb a larger amount of kinetic energy of scattered objects.

1 Scattered object protection device 3 Protective plate 31 Front side 32 Back side 33 Projection plate 34 Upper end 35 Lower end 36, 36A, 36B Ends 37, 37A, 37B Area 38, 38A, 38B Through hole 4 Support pillar 4A First support pillar 4B Second Support pillar 4C One side support pillar 41 One end 42 One end 43 Upper end plate 5 Fixing plate 51 Fixing part 52 Extending part 6 Reinforcing member 7 Connecting plate 8 Connecting device 81 Rod-shaped member 82 Connecting member 83 Nut 011, 11 Rotating equipment 012,12 Rotating body 012A, 12A Scattered material 014,13 Internal space 014,14 Equipment structure Wall surface 015,15 Through hole 016,16 Lid 017,17 Vulnerable part 018,18 Bolt 019,19 Bolt hole 20 Base 21 Floor surface 22 Horizontal extension 23 Spacer 24, 25, 27 Fastening member 26 Equipment CL Compressive load CP Position F Impact force M Bending load SC Stress concentration range SR Assumed scattering range WP1 1st weld WP2 2nd weld

Claims (7)

A scattered object protection device placed adjacent to a rotating device.
A protective plate having a front surface oriented toward the rotating device and a back surface located on the side opposite to the front surface.
A scattered object protection device having a length direction, one end portion in the length direction being fixed to a base, and at least one support column configured to support the protection plate from the back surface side. .. A fixing plate including a fixing portion fixed to the one end portion of the support column and an extending portion extending from the front surface of the protective plate toward the rotating device side is further provided.
The flying object protection device according to claim 1, wherein the fixing plate is fastened to the base at the extending portion. The at least one support pillar
The first support pillar and the second support pillar arranged apart from the first support pillar in the width direction of the protective plate are included.
The scattered object protection device according to claim 1 or 2, wherein the scattered object from the rotating device collides with a position between the first support column and the second support column on the protective plate. The at least one support pillar
Includes a first support pillar and a second support pillar arranged apart from the first support pillar in the width direction of the protective plate.
The scattered object protection device is
The scattered object protection device according to any one of claims 1 to 3, further comprising a reinforcing member configured to connect the first support column and the second support column. The scattered object protection device according to any one of claims 1 to 4, wherein the at least one support pillar is fixed to the protective plate along the length direction. The at least one support column includes a one-sided support column configured to support the protective plate at a position separated from one end of the protective plate in the width direction to the other side in the width direction. ,
1. The scattered object protection device further includes a connecting plate configured to connect a region between the one-sided end portion of the protection plate and the one-sided support column and another device. The scattered object protection device according to any one of items 5 to 5. The scattered object protection device according to any one of claims 1 to 6, wherein the protective plate is provided so that the front surface is inclined at an acute angle with respect to the base.

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