Rotor mounting jig, rotor mounting method, and rotor removal method

Abstract

To provide a rotor attachment / detachment jig, a rotor attachment method and a rotor detachment method that can be applied to a currently used device when attaching and detaching a rotor of the device having the rotor in a casing, and can be applied to a plurality of devices with one jig.SOLUTION: The present invention is a rotor attachment / detachment jig 1 that can be attached to a casing 12 when attaching / detaching a rotor 11 to / from a shaft 13 located within the casing 12 through an opening part 12a. The rotor attachment / detachment jig comprises a rail part 2 having an insertion path 22 through which a blade 11b of the rotor 11 can be inserted, and a mounting part 4 for mounting on the casing 12. The rail part 2 supports the rotor 11 so as to be slidable in an axial direction X1 with the blade 11b inserted into the insertion path 22. The insertion path 22 communicates with an external space OS at a tip part 2a of the rail part 2. When attached to the casing 12, part of the rail part 2 including the tip part 2a is located within the casing 12.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a rotor attachment / detachment jig that can be attached to a casing when attaching or detaching a rotor to or from a shaft in the casing, a rotor attachment method for attaching a rotor to a shaft in a casing, and a rotor detachment method for detaching a rotor attached to a shaft in a casing. [Background Art]

[0002] Conventionally, in equipment having a rotor inside a casing such as a rotary valve, rotor attachment and detachment work has been performed by skilled workers. When attaching a rotor to a shaft inside a casing, it is necessary for a worker to lift the rotor by hand, align the central axes of the rotor and the shaft, and push the rotor straight along the axial direction while maintaining the height of the rotor. When removing the rotor, it is necessary for the worker to lift the rotor by hand and pull it out straight along the axial direction while maintaining the height of the rotor.

[0003] When a worker lifts the rotor and moves it straight along the axial direction, since the rotor generally weighs about 5 to 20 kg, skilled technique is required to move it straight along the axial direction while maintaining the height of the rotor. When an unskilled worker pulls the rotor out from the shaft, the load applied to the shaft changes depending on the position of the rotor, so the balance of the force for supporting the rotor is lost, and a situation where the rotor tilts with respect to the shaft may occur. If the rotor is pulled out in this state, the rotor may come into contact with the casing, possibly causing scratches on both. Additionally, when the rotor separates from the shaft, the load applied from the rotor to the worker changes greatly, so there is also a risk that the rotor may be dropped. Furthermore, rotary valves are sometimes installed at high places, and it is often difficult to secure sufficient working space for workers when performing rotor attachment / detachment work at high places, so more accurate work is required. For this reason, rotor attachment and detachment work is performed by skilled workers.

[0004] As a rotary valve that simplifies the rotor attachment and detachment work described above, Patent Document 1 proposes a rotary valve comprising a casing equipped with rotor chambers communicating with a supply port and a discharge port, respectively, a rotor shaft rotatably supported via bearings disposed at both ends of the casing, and a rotor consisting of a plurality of blades projecting radially from the outer circumferential surface of the rotor shaft and rotating integrally with the rotor shaft within the rotor chamber, wherein the front end portion of the casing is a cover removable from the casing body, formed to engage with the rotor on its back surface via an engaging member, and configured such that when the cover is released from its fixation to the casing body and moved forward, the rotor also moves together with it, and guide rods for guiding and supporting the forward movement of the cover and the rotor are formed along the axis of the rotor shaft on both sides of the casing. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2005-1817 [Overview of the project] [Problems that the invention aims to solve]

[0006] The rotary valve described in Patent Document 1 simplifies the rotor attachment and detachment process by using a guide rod formed on the side of the casing. Therefore, the guide rod is permanently installed for each rotary valve, and one guide rod cannot be applied to multiple rotary valves. Most commonly used devices with rotors inside a casing (such as rotary valves) do not have a rotor attachment and detachment mechanism like the guide rod in Patent Document 1. Therefore, in order to perform rotor attachment and detachment on these devices based on Patent Document 1, it is necessary to perform a major operation such as replacing the device with one that has a rotor attachment and detachment mechanism or adding a rotor attachment and detachment mechanism. Furthermore, since a rotor attachment and detachment mechanism is required for each device, the cost required to implement this is high.

[0007] To solve the above problems, the present invention aims to provide a rotor mounting jig, a rotor mounting method, and a rotor detachment method that are applicable to currently used equipment and can be applied to multiple pieces of equipment with a single jig, for the purpose of mounting and detaching rotors of equipment having rotors inside a casing. [Means for solving the problem]

[0008] The present invention relates to a rotor attachment and detachment jig that can be attached to a casing when attaching and detaching a rotor having a shaft portion and a plurality of blades to a shaft located inside the casing having an opening, the jig comprising a rail portion having an insertion passage through which the blades can be inserted, and a mounting portion for attachment to the casing, wherein the rail portion supports the rotor so as to be able to slide in the axial direction when the blades are inserted into the insertion passage, the insertion passage communicates with the outside space at the tip of the rail portion, and when attached to the casing, a part of the rail portion including the tip is located inside the casing.

[0009] This configuration allows for attachment to the casing via the mounting section, making it applicable to equipment without a rotor attachment / detachment mechanism. It is portable and used only when rotor attachment / detachment is required, allowing for application to multiple pieces of equipment with a single unit. Because it does not need to be permanently installed on individual pieces of equipment, it achieves space and cost savings compared to equipment with a rotor attachment / detachment mechanism. The rotor attachment / detachment jig, attached to the casing, supports the rotor so that it can slide axially. The jig supports the rotor so that the central axes of the rotor and shaft align. This allows the operator to align the central axes of the rotor and shaft when pushing or pulling the rotor toward or away from the shaft, maintaining the rotor's height and moving it straight along the axial direction. Therefore, even inexperienced operators can easily perform rotor attachment / detachment, eliminating the need for operator expertise. Because the rotor is supported by the rotor attachment / detachment jig, it prevents the rotor from falling, improving safety. "Attachment / detachment" includes both the operations of mounting and detachment.

[0010] In the present invention, it is preferable that the rail portion has a contact member that contacts the outer peripheral region of the shaft portion where the fins are not provided.

[0011] With this configuration, the contact member contacts the shaft to support the rotor, thus providing stable support. A resin material such as polyacetal is preferred as the contact member. By employing such a contact member, it is possible to prevent damage to the shaft caused by contact.

[0012] In this invention, it is preferable that the upper edge of the contact member is oriented from the left and right sides of the shaft toward the center of the shaft.

[0013] With this configuration, the rotor attachment / detachment jig supports the rotor, and at the same time, the rotor can be positioned so that the longitudinal direction of the rail section coincides with the axial direction of the rotor.

[0014] In the present invention, a part of the shaft portion can be inserted into the insertion passage, and the rail portion may be configured to slidably support the rotor in the axial direction in a state where the blades and a part of the shaft portion are inserted into the insertion passage.

[0015] According to this configuration, the present invention is applicable to attachment and detachment of rotors of various shapes.

[0016] In the present invention, the rail portion may be configured to include an abutting member that abuts against the blade.

[0017] According to this configuration, since the abutting member abuts against the blade to support the rotor, rotors with shaft portions of various shapes can be stably supported.

[0018] In the present invention, the upper end edge of the abutting member may be configured to be in surface contact with the blade.

[0019] According to this configuration, the rotor can be supported more stably.

[0020] The present invention preferably includes a positioning portion that performs positioning when attached to a casing.

[0021] According to this configuration, since the rotor attaching / detaching jig is positioned when attached to the casing, position adjustment is facilitated, and convenience during use is improved.

[0022] In the present invention, it is preferable that the attachment portion and the positioning portion are integrally provided.

[0023] According to this configuration, the number of members required for configuring the rotor attaching / detaching jig is reduced, which contributes to space saving and cost reduction.

[0024] In the present invention, it is preferable that the insertion passage communicates with the external space at the rear end of the rail portion.

[0025] According to this configuration, the blades of the rotor can be inserted into or pulled out from the rear end relative to the insertion passage, so that the rotor attaching / detaching jig can be used even when the upper space is limited.

[0026] In the present invention, it is preferable that a restricting portion capable of restricting communication between the insertion passage and an external space is provided at the rear end.

[0027] According to this configuration, unintended falling-off of the rotor from the rear end can be prevented.

[0028] In the present invention, it is preferable that a side surface of the rail portion is inclined outward from an upper end toward a lower end.

[0029] According to this configuration, when the rotor attaching / detaching jig supports the rotor, centering of the rotor can be performed. Furthermore, the rotor can be supported more stably by the rotor attaching / detaching jig.

[0030] In the present invention, it is preferable that the attachment portion includes a through hole, and the through hole allows insertion of a fastening member that is screwed into a screw hole provided in the casing.

[0031] According to this configuration, when attaching the rotor attaching / detaching jig to the casing, a screw hole provided in the casing can be utilized.

[0032] In the present invention, the attachment portion may be annular, and may have a configuration in which the attachment portion and the casing come into surface contact when attached to the casing.

[0033] According to this configuration, the contact area between the attachment portion and the casing increases, and the bonding strength increases, so that the load resistance is improved.

[0034] The present invention relates to Using the rotor attachment / detachment jig described above a rotor mounting method for mounting a rotor having a shaft portion and a plurality of blades onto a shaft positioned within a casing having an opening through the opening, wherein a rotor attaching / detaching jig is , such that a portion of the rail section, including the tip, is located inside the casing. an insertion step of inserting into the casing, and Using the mounting part The installation process involves attaching the rotor attachment / detachment jig to the casing, and then attaching the blades to the rotor attachment / detachment jig. Insertion passage With the rotor inserted, Rail section The invention is characterized by including a mounting step of placing the rotor on top and a mounting step of sliding the rotor and attaching it to the shaft.

[0035] This configuration is applicable to equipment without a rotor attachment / detachment mechanism. Since the rotor attachment / detachment jig is attached and used when performing rotor installation, one jig can be applied to multiple pieces of equipment. Because there is no need to permanently install a rotor attachment / detachment mechanism on each piece of equipment, space and cost savings can be achieved compared to equipment equipped with such a mechanism. The rotor attachment / detachment jig, attached to the casing, supports the rotor so that it can slide axially. By supporting the rotor so that its central axis aligns with the shaft, the operator can push the rotor towards the shaft, aligning the central axis of the rotor with the shaft and pushing it straight along the axial direction while maintaining the rotor's height. Therefore, even inexperienced operators can easily perform rotor installation. Because the rotor is supported by the rotor attachment / detachment jig, the rotor cannot fall, improving safety.

[0036] The present invention relates to a process in which the previously described setting step involves placing the blades and a part of the shaft portion of the rotor attachment / detachment jig. Insertion passage With the rotor inserted through the Rail section The process involves placing the ramen on top.

[0037] This configuration allows for the installation of rotors of various shapes.

[0038] The present invention Using the rotor attachment / detachment jig described above A rotor removal method for removing a rotor having a shaft portion and a plurality of blades, which is mounted on a shaft located inside a casing having an opening, from the shaft through the opening. ,B A jig for attaching and detaching the data, A portion of the rail section, including the tip, is located inside the casing. Feathers Insertion passage With it inserted 、The insertion process involves inserting the casing, Using the mounting part The installation process involves attaching the rotor attachment / detachment jig to the casing, and the rotor While supporting it on the rail section of the rotor attachment / detachment jig The invention is characterized by including a detachment step of sliding and detaching the part from the shaft.

[0039] This configuration is applicable to equipment without a rotor removal mechanism. Since the rotor removal jig is attached and used when performing rotor removal, one jig can be applied to multiple pieces of equipment. Because there is no need to permanently install a rotor removal mechanism on each piece of equipment, space and cost savings can be achieved compared to equipment equipped with a rotor removal mechanism. The rotor removal jig attached to the casing supports the rotor so that it can slide axially. The jig supports the rotor so that its central axis aligns with the shaft. This allows the operator to align the central axis of the rotor and the shaft, maintaining the rotor's height while pulling it straight along the axial direction. Therefore, even inexperienced operators can easily perform rotor removal. Because the rotor is supported by the rotor removal jig, it prevents the rotor from falling, improving safety. Since this rotor removal jig is attached to the workpiece when performing rotor removal, there is no need to permanently install it on individual rotary valves or other equipment, resulting in space and cost savings.

[0040] In this invention, the insertion step involves inserting the rotor attachment / detachment jig into the blades and a part of the shaft portion. Insertion passage Alternatively, the process may involve inserting the part into the casing while it is still inserted through the part.

[0041] This configuration allows for the detachment of rotors of various shapes. [Effects of the Invention]

[0042] The present invention is applicable to equipment that lacks a rotor attachment / detachment mechanism. One rotor attachment / detachment jig can be used for multiple pieces of equipment. Even inexperienced workers can easily attach and detach the rotor. The rotor can be prevented from falling, improving safety. [Brief explanation of the drawing]

[0043] [Figure 1] This is a perspective view of a rotor attachment / detachment jig and a rotary valve according to the first embodiment of the present invention. [Figure 2] This is a cross-sectional view taken along line II-II in Figure 1. [Figure 3] This is a cross-sectional view taken along line III-III in Figure 1. [Figure 4] This is a perspective view of a rotor attachment / detachment jig attached to a rotary valve in the first embodiment of the present invention. [Figure 5] This is a perspective view of the rotor attachment / detachment jig that supports the rotor. [Figure 6] This is a perspective view of the rotor attachment / detachment jig with the restriction by the limiting part released. [Figure 7] This is a perspective view showing a modified example of the rotor attachment / detachment jig according to the first embodiment of the present invention. [Figure 8] This is a process diagram of the rotor mounting method according to the first embodiment of the present invention. [Figure 9] The same is a perspective view showing the procedure for mounting the rotor, with (a) showing the insertion process, (b) showing the mounting process, (c) showing the placement process, and (d) showing the installation process. [Figure 10] This is a process diagram of the rotor detachment method according to the first embodiment of the present invention. [Figure 11] The same is a perspective view showing the procedure for removing the rotor, with (a) showing the insertion process, (b) showing the mounting process, and (c) showing the removal process. [Figure 12] This is a perspective view of a rotor attachment / detachment jig according to a second embodiment of the present invention. [Figure 13] This is a perspective view of the rotor attachment / detachment jig that supports the rotor. [Modes for carrying out the invention]

[0044] [Rotor attachment / detachment jig] An embodiment of the rotor attachment / detachment jig will be described with reference to Figures 1 to 7. The rotor attachment / detachment jig 1 (hereinafter referred to as jig 1) is a jig that can be attached to a casing when attaching or detaching a rotor having a shaft portion and a plurality of blades to a shaft located inside the casing having an opening, through the opening. In this embodiment, a rotary valve 10 will be described as an example to which jig 1 is attached, comprising a rotor 11 having a shaft portion 11a and a plurality of blades 11b, a casing 12 having an opening 12a, and a shaft 13 located inside the casing 12.

[0045] The jig 1 comprises a rail section 2, a limiting section 3, a mounting section 4 for attaching it to the casing 12, and a positioning section 5 for positioning the jig 1 when attaching it to the casing 12 (see Figures 1 to 3). In Figure 3, the rotor 11 is virtually represented by a dashed line to show the position of each component when the jig 1 supports the rotor 11.

[0046] Since the jig 1 can be attached to multiple rotary valves 10, each rotary valve 10 does not need to be equipped with a rotor attachment / detachment mechanism (for example, a guide rod as described in Patent Document 1), thus suppressing an increase in the manufacturing cost of the rotary valves 10.

[0047] The rail section 2 is an elongated body having a frame 21, an insertion passage 22 formed along the longitudinal direction L of the jig 1 due to the opening at the top of the frame 21, a contact member 23 that contacts the outer peripheral region of the shaft portion 11a of the rotor 11 where the blades 11b are not provided, and a support member 24 fixed to the side plate 21a of the frame 21 and supporting the contact member 23. With the blades 11b inserted through the insertion passage 22, the rail section 2 supports the rotor 11 so that it can slide in the axial direction X1 of the rotor 11 (see Figure 4).

[0048] The frame 21 has a pair of side plates 21a, a rear plate 21b, and a rib 21c. The rib 21c extends from the inside of the side plate 21a near the center of the frame 21 in the longitudinal direction L, along the width direction WD of the jig 1 which is perpendicular to the longitudinal direction L. The pair of side plates 21a are connected by the rear plate 21b and the rib 21c. Therefore, the frame 21 is forked on both sides from the rib 21c to the tip, forming an insertion plate section 21f (see Figures 1 to 3). The rear plate 21b and the rib 21c are provided with notches 21d and 21e, respectively, which open at the top in a roughly U-shape, so that contact between the blades 11b and the rear plate 21b and rib 21c is avoided when the rotor 11 supported by the rail section 2 slides. The side plate 21a (side surface) is inclined from the top end to the bottom end such that its outer surface forms one side of a triangle. The side plate 21a is roughly rectangular in shape between the rear plate 21b and the rib 21c, and between the rib 21c and the tip of the insertion plate portion 21f, it forms a tapered portion 21g in which the lower end of the insertion plate portion 21f slopes upward as shown in the figure toward the tip. When the jig 1 is attached to the casing 12, a part of the rail portion 2 (insertion plate portion 21f) including the tip of the frame 21 is located inside the casing 12 (see Figures 4 and 5). Since the frame 21 is provided with a tapered portion 21g, it is easier to insert the frame 21 and easier to remove the frame 21.

[0049] The insertion passage 22 opens upward, and its opening width W1 along the width direction WD is greater than the thickness T of the blade 11b. The depth along the height direction HD of the jig 1 is configured such that the blade 11b does not come into contact with the frame 21 when the jig 1 supports the rotor 11, thus allowing the blade 11b to be inserted into the passage. Therefore, the blade 11b can be inserted into the insertion passage 22 from above the rail section 2. The insertion passage 22 communicates with the external space OS at the front end 2a and rear end 2b of the rail section 2 (see Figures 1 to 3). Therefore, with the blade 11b inserted into the insertion passage 22, the rotor 11 supported by the rail section 2 can be slid in the axial direction X1 to push out or pull out from the front end 2a or the rear end 2b (see Figures 4 and 5). It is also possible to insert the blade 11b into the insertion passage 22 from the front end 2a or the rear end 2b.

[0050] The contact member 23 is a long, plate-shaped member that contacts the area of ​​the shaft portion 11a where the blades 11b are not provided. It is fixed to the side plate 21a while being supported by a support member 24 (described later), and extends upward along the inclination of the side plate 21a. In the case of the contact member 23, as described later, the jig 1 is attached to the casing 12 by a fastening member 14, and when the jig 1 supports the rotor 11, the upper edge 23a of the contact member 23 is oriented towards the center (axis center P) of the shaft portion 11a of the rotor 11. This allows the jig 1 to support the rotor 11, and at the same time, the rotor 11 can be positioned so that the longitudinal direction L coincides with the axial direction X1 of the rotor 11. Furthermore, compared to the case where the contact member 23 is provided vertically, the sliding movement of the rotor 11 in the axial direction X1 is more stable. The size of the contact member 23 is set so that when the rotor 11 is supported by the jig 1 attached to the rotary valve 10, the axis center P of the rotor 11 and the axis center of the shaft 13 coincide. This allows the rotor 11 and the shaft 13 to be aligned. Preferably, the upper edge 23a is a curved surface having the same curvature as the shaft portion 11a of the rotor 11. This allows the upper edge 23a to contact the outer peripheral region of the shaft portion 11a, excluding the blades 11b, making the support of the rotor 11 by the jig 1 and the alignment of the rotor 11 and the shaft 13 more stable. The contact member 23 is made of a material softer than the rotor 11, which prevents scratches on the rotor 11. Examples of materials for the contact member 23 include rubber and polyacetal resin, but it is not limited to these; any material that does not cause scratches on the rotor 11 when it slides while in contact with the contact member 23 is acceptable.

[0051] The support member 24 is a long, roughly L-shaped member that is fixed to the side plate 21a of the frame 21 and supports the abutment member 23 located above it. The shape of the support member 24 is not limited to a roughly L-shape, as long as it can support the abutment member 23.

[0052] The restricting section 3 is provided on the rear plate 21b and can restrict communication between the insertion passage 22 and the external space OS. By restricting communication between the insertion passage 22 and the external space OS with the restricting section 3, it is possible to prevent the rotor 11 supported by the rail section 2 from unintentionally falling off the rear end 2b of the rail section 2. When communication between the insertion passage 22 and the external space OS is not restricted, that is, when the restriction on communication by the restricting section 3 is released, the rotor 11 supported by the jig 1 can be pulled out from the rear end 2b (see Figure 6).

[0053] The mounting portion 4 consists of a pair of plate-shaped members 41, each connected to the vicinity of the center of the side plate 21a in the longitudinal direction L (in this embodiment, the position where the rib 21c is provided on the inside). In this embodiment, the pair of plate-shaped members 41 and the rib 21c are integrally formed. The pair of plate-shaped members 41 are provided with through holes 42 through which fastening members 14 that screw into screw holes 12b provided in the casing 12 can be inserted. The position of the through holes 42 corresponds to the position of the screw holes 12b provided in the casing 12, and when the jig 1 is attached to the casing 12, the plate-shaped members 41 are pressed against the casing 12 by the fastening members 14 that are screwed into the screw holes 12b through the through holes 42, thereby fixing the jig 1 to the casing 12. If there are protrusions or the like on the outer surface of the casing 12 at the position where the plate-shaped members 41 come into contact, the plate-shaped members 41 may have avoidance holes 43 to avoid the protrusions or the like. The avoidance hole 43 allows for stable attachment of the jig 1 to the rotary valve 10. The shape of the plate-shaped member 41 can be appropriately changed according to the shape of the rotary valve 10 to which it is attached.

[0054] The positioning portion 5 is a projection extending parallel to the rail portion 2 from a pair of plate-shaped members 41. When attaching the jig 1 to the casing 12, the positioning portion 5 contacts the inner wall of the opening 12a to position the jig 1. This makes it easy to position the jig 1 in the appropriate location. In this embodiment, the mounting portion 4 and the positioning portion 5 are provided integrally, but the invention is not limited to this.

[0055] <Variation> A modified example of this embodiment, the rotor attachment / detachment jig 101 (hereinafter referred to as jig 101), will be described with reference to Figure 7. The jig 101 has a frame 121 having a rear plate 121b without a notch, instead of the frame 21. In the jig 1, a notch 21d is provided in the rear plate 21b of the frame 21, and the insertion passage 22 and the external space OS are in communication at the rear end 2b of the rail section 2. However, if it is not necessary to pull out the rotor 11 from the rear end 2b, the jig 101 can also be used.

[0056] [Rotor mounting method] Referring to Figures 1 to 6, 8, and 9, the rotor mounting method using the jig 1 will be explained using the mounting of the rotor 11 to a rotary valve 10, which comprises a rotor 11 having a shaft portion 11a and a plurality of blades 11b, a casing 12 having an opening 12a, and a shaft 13 located inside the casing 12.

[0057] The rotor mounting method includes an insertion step S1 in which a jig 1 that supports the rotor 11 so as to be slidable in the axial direction X1 is inserted into the casing 12; an installation step S2 in which the jig 1 is attached to the casing 12; an installation step S3 in which the rotor 11 is placed on the jig 1 with the blades 11b inserted through the insertion passage 22; and an installation step S4 in which the frame 21 is slid in the axial direction X1 and mounted on the shaft 13 (see Figure 8).

[0058] <Insertion process S1> For a casing 12 from which the rotor 11 is not mounted on the shaft 13, the jig 1 is inserted through the opening 12a along the axial direction X2 of the shaft so that a part of the rail portion 2, including the tip 2a (insertion plate portion 21f), is positioned inside the casing 12. When insertion is complete, the plate-shaped member 41 of the mounting portion 4 and the front surface of the casing 12 come into contact (see Figure 9(a)). At this time, by adjusting the position of the jig 1 so that the pair of positioning portions 5 come into contact with the inner wall surface of the opening 12a, it becomes easy to position the jig 1 to a position where the through hole 42 of the mounting portion 4 and the screw hole 12b of the casing 12 are in communication. After positioning, the longitudinal direction L of the jig 1 coincides with the axial direction X2 of the shaft.

[0059] <Installation process S2> The fastening member 14 is screwed into the screw hole 12b through the through hole 42 of the positioned jig 1. This fixes the positioned jig 1 and attaches it to the casing 12 (see Figure 9(b)).

[0060] <Placement process S3> The rotor 11 is placed on the jig 1 attached to the casing 12 by lowering the rotor 11 from above, with the blades 11b inserted into the insertion passage 22 (see Figure 9(c)). Alternatively, the rotor 11 may be slid along the axial direction X1 of the rotor 11 from the rear end 2b to insert the blades 11b into the insertion passage 22 and then placed on the jig 1. When the rotor 11 is placed on the jig 1, the rotor 11 is centered so that the axial direction X1 of the rotor 11, the longitudinal direction L, and the axial direction X2 of the shaft 13 coincide. After the rotor 11 is placed on the jig 1, it is preferable to restrict communication between the rear end 2b and the external space OS with the limiting part 3. This prevents the rotor 11 from falling off the rear end 2b.

[0061] <Installation process S4> The rotor 11, placed on the jig 1, is slid into the casing 12 and mounted on the shaft 13 (see Figure 9(d)). At this time, since the rotor 11 is centered in the mounting process S3, and the jig 1 allows the rotor 11 to slide along the axial direction X1, the shaft 13 is inserted into the shaft portion 11a without the rotor 11 and the casing 12 coming into contact by pushing the rotor 11 towards the casing 12. This makes it possible to easily perform the skilled task of pushing the rotor 11 while adjusting the positional relationship between the shaft portion 11a and the shaft 13 in order to avoid contact between the rotor 11 and the casing 12. After the shaft 13 is inserted, the rotor 11 is fixed to the shaft 13 with fastening members, etc., and the mounting of the rotor 11 is completed. After the mounting of the rotor 11 is complete, the jig 1 can be removed from the casing 12, so it is not necessary to permanently install the jig 1 on the casing 12.

[0062] [Rotor Detachment Method] The rotor removal method using jig 1 will be explained with reference to Figures 1 to 6, 10, and 11. Similar to the rotor mounting method, the removal of the rotor 11 from a rotary valve 10, which comprises a rotor 11 having a shaft portion 11a and a plurality of blades 11b, a casing 12 having an opening 12a, and a shaft 13 located inside the casing 12, will be explained as an example.

[0063] The rotor detachment method includes an insertion step S11 in which a jig 1 that supports the rotor 11 so as to be slidable in the axial direction X1 is inserted into the casing 12 with the blades 11b inserted into the insertion passage 22; an attachment step S12 in which the jig 1 is attached to the casing 12; and a detachment step S13 in which the rotor 11 is slid to detach it from the shaft 13 (see Figure 10).

[0064] <Insertion process S11> The jig 1 is inserted through the opening 12a along the axial direction X2 of the shaft into the casing 12 on which the rotor 11 is mounted on the shaft 13, such that a portion of the rail portion 2, including the tip 2a (insertion plate portion 21f), is positioned inside the casing 12. At this time, the jig 1 is inserted so that the blades 11b are inserted into the insertion passage 22. Similar to the insertion process S1, when the insertion is complete, the plate-shaped member 41 and the casing 12 are in contact, and the jig 1 is positioned by the positioning unit 5 (see Figure 11(a)).

[0065] <Installation process S12> Similar to the installation process S2, the positioned jig 1 is fixed and attached to the casing 12 by screwing the fastening member 14 into the screw hole 12b through the through hole 42 (see Figure 11(b)). At this time, the rotor 11 mounted on the shaft 13 is in contact with the contact member 23 of the rail section 2 and is supported by the shaft 13 and the jig 1.

[0066] <Detachment process S13> The rotor 11 is released from the fastening member or the like by which it is fixed to the shaft 13, and the rotor 11 is slid out of the casing 12 to detach it from the shaft 13 (see Figure 11(c)). At this time, since the rotor 11 is supported in a centered state by the jig 1 and can be slid along the axial direction X1, the rotor 11 can be pulled out from the shaft 13 without contacting the casing 12 when pulling it out to the outside of the casing 12. This makes it possible to easily perform the skilled task of pulling out the rotor 11 while adjusting the positional relationship between the shaft portion 11a and the shaft 13 in order to avoid contact between the rotor 11 and the casing 12. The entire rotor 11 is pulled out to the outside of the casing 12 and the detachment of the rotor 11 is completed. When performing the detachment process S13, the communication between the rear end 2b and the external space OS may be restricted by the limiting portion 3, thereby preventing the rotor 11 from unintentionally falling off the rear end 2b.

[0067] After the rotor 11 has been pulled out of the casing 12, the rotor 11, which is supported on the jig 1, can be lifted upward and pulled out of the jig 1. Alternatively, the restriction on communication by the limiting part 3 can be released, and the rotor 11 can be pulled out from the rear end 2b. Since the jig 1 can be removed from the casing 12 after the rotor 11 has been pulled out of the jig 1, it is not necessary to permanently install the jig 1 on the casing 12.

[0068] As described above, the embodiments of the present invention provide the following effects. Since the jig 1 supports the rotor 11 so that it can slide in the axial direction X1, the rotor 11 can be attached to and detached from the shaft 13 by pushing or pulling the rotor 11 toward the shaft 13. Since the rotor 11 is supported by the jig 1, the rotor 11 can be prevented from falling, improving safety. The contact member 23 allows the rotor 11 to be centered. Since the limiting part 3 restricts communication between the rear end 2b and the external space OS, the rotor 11 can be prevented from falling off the rear end 2b. Since the positioning part 5 positions the jig 1, the jig 1 can be easily placed in the appropriate position. With the jig 1, even an unskilled worker can easily attach and detach the rotor of a rotary valve 10 that does not have a rotor attachment / detachment mechanism. Since jig 1 is portable and is attached to the workpiece when performing rotor attachment and detachment work, it does not need to be permanently installed on each rotary valve 10, and one jig can be applied to multiple rotary valves 10, thereby achieving space savings and cost savings.

[0069] (Second Embodiment) Referring to Figures 12 and 13, a rotor attachment / detachment jig 201 (hereinafter referred to as jig 201), which is a second embodiment of the present invention, will be described. Here, the same reference numerals are used for parts that are the same as in the first embodiment, and their descriptions are used accordingly, while the differences will be explained.

[0070] As shown in Figure 12, the jig 201 is also applicable to a rotor 211 having a shaft portion 211a with a larger diameter than the shaft portion 11a of the rotor 11 and multiple blades 211b, and is equipped with a rail portion 202 and a mounting portion 204, respectively, in place of the rail portion 2 and mounting portion 4 of the jig 1 of the first embodiment.

[0071] The rail section 202 has a frame 221 that forms an insertion passage 222 and a contact member 223 whose upper edge 223a makes surface contact with the blade 211b. The opening width W2 of the insertion passage 222 is configured to be larger than the opening width W1 of the insertion passage 22 of the jig 1 of the first embodiment, and the depth along the height direction HD is configured to be such that the rotor 211 does not come into contact with the frame 221 when the rotor 211 is supported by the jig 201. Because the insertion passage 222 is configured in this way, a part of the shaft portion 211a can also be inserted into the insertion passage 222 in addition to the blade 211b, and the rail section 202 can support the rotor 211 so that it can slide in the axial direction X1 of the rotor 211 with the blade 211b and a part of the shaft portion 211a inserted into the insertion passage 222 (see Figure 13).

[0072] Because the rail section 202 has the above configuration, unlike the jig 1 of the first embodiment, the jig 201 does not have the function of aligning the rotor 211 and the shaft 13 in the width direction WD when the rotor 211 is supported by the jig 201 attached to the rotary valve 10. However, it can be applied to rotors of various shapes, such as those with different outer diameters of the rotor shaft and blade lengths.

[0073] In this embodiment, the opening width W2 of the insertion passage 222 is larger than the outer diameter of the shaft portion 211a of the rotor 211. However, the rail portion 202 is configured to support the rotor 211 so that it can slide in the axial direction X1 of the rotor 211 with the blades 211b and a portion of the shaft portion 211a inserted into the insertion passage 222.

[0074] When the rail section 202 supports the rotor 211, the upper edge 223a of the contact member 223 makes surface contact with the blade 211b, so that the jig 201 can stably support the rotor 211 (see Figure 13). In this embodiment, the shape of the support member 224 that supports the contact member 223 is a long plate shape, but it is not limited to this shape as long as it can support the contact member 223.

[0075] The insert plate portion 221f of the frame 221 has ribs 221h that extend inward (see Figure 12). The ribs 221h improve the rigidity of the insert plate portion 221f, thereby improving the load-bearing capacity of the jig 201. As shown in Figure 12, the rear plate 221b of the frame 221 may have holes 221i for holding the fastening members 14. This configuration is convenient for storing the fastening members 14 and prevents them from being lost during storage. As in the first embodiment, the rear plate 221b may have a limiting portion 3.

[0076] The mounting portion 204 consists of an annular plate-shaped member 241 with a hole 244 formed on its inner side (see Figure 12). When the insertion plate portion 221f is inserted into the casing 12 and the jig 201 is attached to the casing 12, the plate-shaped member 241 of the mounting portion 204 is in surface contact with the outer surface of the casing 12 (see Figure 13). Because the plate-shaped member 241 is annular and makes surface contact with the outer surface of the casing 12, the contact area between the plate-shaped member 241 and the casing 12 is improved, thereby improving the joint strength between the jig 201 and the casing 12. This reduces the sagging of the jig 201 when supporting the rotor 211. In this embodiment, the opening of the opening 12a and the hole 244 are substantially the same shape, but the shape and size of the hole 244 are not limited to this, as long as the configuration avoids contact between the mounting portion 204 and the rotor 211 when the rotor 211 supported by the jig 201 slides. In this embodiment, the mounting portion 204 consists of an annular plate-shaped member 241, but is not limited thereto. For example, it may consist of a member with a shape that increases the contact area between the mounting portion 204 and the casing 12.

[0077] The rotor mounting method and rotor removal method are the same as in the first embodiment, except that a part of the shaft portion 211a is inserted into the insertion passage 222 in addition to the blade 211b, so a detailed explanation is omitted here.

[0078] As described above, the jig 201 of the second embodiment is applicable to rotors with a larger outer diameter of the shaft portion compared to the jig 1 of the first embodiment, and has higher rigidity and superior load-bearing capacity. Therefore, it is a configuration that can be applied to a variety of rotors.

[0079] Although preferred embodiments of the present invention have been described in detail above, the present invention is not limited to the embodiments described above, and various modifications and changes are possible within the scope of the present invention as described in the claims. For example, the rotor attachment / detachment jig may be configured to insert multiple rotor blades into insertion passages. [Industrial applicability]

[0080] The rotor attachment / detachment jig, rotor mounting method, and rotor detachment method according to the present invention have great industrial potential because a single rotor attachment / detachment jig can be used to easily and safely attach and detach rotors to multiple devices. [Explanation of Symbols]

[0081] 1, 101, 201... Rotor mounting and detachment jig 2,202... Rail section 2a...Tip 2b...Rear end 21, 121, 221... Frames 21a...Side plate 21b, 121b, 221b...rear plate 21c... Rib 21d, 21e... Notches 21f... Insertion board section 21g...Tapered section 22, 222... Insertion passage 23, 223... Contact members 23a, 223a... Upper edge 24, 224... Support members 3. Restriction section 4, 204... Mounting part 41. Plate-shaped member 42... Through hole 43...Escape hole 5. Positioning section 10. Rotary valve 11,211...Rota 11a, 211a...Shaft part 11b, 211b... Feathers 12. Casing 12a...Opening 12b...screw hole 13... Shaft 14. Fastening components 221h... Rib 221i...hole 244...hole H1... depth HD... Height Direction L... Long direction L1... Length OS...External space P...Axis center S1... Insertion process S2...Installation process S3... Placement process S4...Installation process S11... Insertion process S12...Installation process S13... Desorption process T...thickness X1...Axial direction X2...Axial direction W1, W2...Opening width WD...Width direction

Claims

1. A rotor attachment / detachment jig that can be attached to a casing when attaching or detaching a rotor having a shaft portion and a plurality of blades to a shaft located inside the casing having an opening, through the opening, A rail section having an insertion passage through which the aforementioned blades can be inserted, It comprises a mounting portion for attaching to the casing, The rail portion supports the rotor so that it can slide in the axial direction with the blades inserted into the insertion passage. The aforementioned insertion passage communicates with the external space at the tip of the rail section, A rotor attachment / detachment jig, which, when attached to the casing, has a portion of the rail section, including the tip, positioned inside the casing.

2. The rotor attachment / detachment jig according to claim 1, wherein the rail portion has a contact member that contacts the outer peripheral region of the shaft portion where the blades are not provided.

3. The rotor attachment / detachment jig according to claim 2, wherein the upper edge of the contact member is oriented so as to move from the left and right sides of the shaft toward the center of the shaft.

4. A portion of the shaft can be inserted through the aforementioned insertion passage. The rotor attachment / detachment jig according to claim 1, wherein the rail portion supports the rotor so that it can slide in the axial direction, with the blades and a portion of the shaft portion inserted into the insertion passage.

5. The rotor attachment / detachment jig according to claim 4, wherein the rail portion has a contact member that contacts the blade.

6. The rotor attachment / detachment jig according to claim 5, wherein the upper edge of the contact member is in surface contact with the blade.

7. A rotor attachment / detachment jig according to any one of claims 1 to 6, further comprising a positioning section for positioning when attaching to the casing.

8. The rotor attachment / detachment jig according to claim 7, wherein the mounting portion and the positioning portion are provided integrally.

9. The rotor attachment / detachment jig according to any one of claims 1 to 6, wherein the insertion passage communicates with the external space at the rear end of the rail portion.

10. The rotor attachment / detachment jig according to claim 9, further comprising a restricting portion at the rear end capable of restricting communication between the insertion passage and the external space.

11. The rotor attachment / detachment jig according to any one of claims 1 to 6, wherein the side surface of the rail portion is inclined outward from the upper end to the lower end.

12. The mounting portion includes a through hole, The rotor attachment / detachment jig according to any one of claims 1 to 6, wherein the through hole allows for the insertion of a fastening member that screws into a screw hole provided in the casing.

13. The aforementioned mounting portion is annular, The rotor attachment / detachment jig according to any one of claims 1 to 6, wherein when attached to the casing, the attachment portion and the casing are in surface contact.

14. A rotor mounting method comprising using a rotor mounting jig according to any one of claims 1 to 6 to mount a rotor having a shaft portion and a plurality of blades onto a shaft located inside a casing having an opening, through the opening, Insertion step of inserting the rotor attachment / detachment jig into the casing such that a part of the rail portion, including the tip, is positioned inside the casing; An installation step of attaching the rotor attachment / detachment jig to the casing using the aforementioned mounting portion, A mounting step of placing the rotor on the rail portion with the blades inserted through the insertion passage of the rotor attachment / detachment jig, A rotor mounting method comprising the step of mounting the rotor by sliding it onto the shaft.

15. The rotor mounting method according to claim 14, wherein the mounting step is a step of mounting the rotor on the rail portion with the blades and a part of the shaft portion inserted into the insertion passage.

16. A rotor removal method comprising using a rotor attachment / detachment jig according to any one of claims 1 to 6, wherein a rotor having a shaft portion and a plurality of blades, mounted on a shaft located inside a casing having an opening, is removed from the shaft through the opening, Insertion step of inserting the rotor attachment / detachment jig into the casing such that a part of the rail portion, including the tip, is located inside the casing, with the blades inserted through the insertion passage; An installation step of attaching the rotor attachment / detachment jig to the casing using the aforementioned mounting portion, A rotor removal method comprising a removal step of sliding the rotor while supporting it on the rail portion of the rotor attachment / detachment jig to detach it from the shaft.

17. The rotor removal method according to claim 16, wherein the insertion step is a step of inserting the rotor attachment / detachment jig into the casing with the blades and a part of the shaft portion inserted into the insertion passage.

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