Sliding bearing, method for replacing sliding bearing, and jig for replacing sliding bearing

Abstract

To provide a sliding bearing which can reduce the cost required for the replacement of the sliding bearing, and a replacement method of the sliding bearing, and a jig for replacement of the sliding bearing.SOLUTION: A sliding bearing 100 is mounted between a lower structure and an upper structure. The sliding bearing 100 is provided with a lower shoe 10 that has a lower base plate 11 supported by the lower structure, and an upper shoe 20 that has an upper base plate 21 supported by the upper structure. The lower base plate 11 includes lower bearing surfaces 11S receiving a reaction force of a jack J. The upper base plate 21 includes upper bearing surfaces 21S that are opposed to the lower bearing surfaces 11S and receive the reaction force of the jack J. The sliding bearing 100 has mounting spaces JS capable of mounting the jack J between the lower bearing surfaces 11S and the upper bearing surfaces 21S.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a sliding bearing, a method for replacing a sliding bearing, and a jig for replacing a sliding bearing. [Background technology]

[0002] Conventionally, there has been a method for replacing sliding bearings that are placed on supports and support a structure.

[0003] However, the conventional method of replacing sliding bearings involves placing a jack between the support and the structure, jacking up the structure, and then replacing the sliding bearings while expanding the gap between the support and the structure in the vertical direction. This requires extensive construction and special tools to ensure the strength of the support and the structure where the jack is installed and to ensure the space for installing the jack, which can increase the cost of replacement. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2019-124029 A Summary of the Invention [Problem to be solved by the invention]

[0005] In view of the problems in the background art described above, an object of the present invention is to provide a sliding bearing, a method for replacing a sliding bearing, and a jig for replacing a sliding bearing that can reduce the cost required for replacing a sliding bearing. [Means for solving the problem]

[0006] The gist of the present invention is as follows.

[0007] (1) A sliding bearing according to one aspect of the present invention is a sliding bearing installed between a lower structure and a superstructure, comprising a lower shoe having a lower base plate supported by the lower structure, and an upper shoe having an upper base plate supported by the superstructure, the lower base plate including a lower support surface that receives a reaction force of a jack, the upper base plate including an upper support surface that faces the lower support surface and receives the reaction force of the jack, and a sliding support for supporting the jack between the lower support surface and the upper support surface. In contact with the lower base plate and the upper base plate There is available installation space. (2) In the above (1), a slider may be provided that is slidable relative to the lower shoe or the upper shoe. (3) In the above (2), the surface pressure acting on the slider may be 20 MPa or more. (4) In any of the above (1) to (3), the lower base plate may support a plurality of the lower shoes. (5) In any of (1) to (4) above, the lower shoe and the lower base plate may be connected by a detachable lower connector, and the upper shoe and the upper base plate may be connected by a detachable upper connector. (6) In the above (5), the lower connector and the upper connector may be positioned so as not to overlap each other in a plan view. (7) A method for replacing a sliding bearing according to one embodiment of the present invention is a method for replacing a sliding bearing according to any one of (1) to (6) above, comprising: a jack installation process for installing the jack in the installation space; a jack-up process for using the jack to press and lift the upper base plate attached to the superstructure; and a replacement process for replacing replacement parts that constitute the sliding bearing. (8) In the above (7), the replacement part may be a friction material. (9) In the above (7) or (8), the sliding support may include a slider that is slidable relative to the lower shoe or the upper shoe, and the replacement part may be the slider. (10) In any of (7) to (9) above, a first jig attachment step may be included in which a sliding bearing replacement jig that connects the upper shoe and the lower shoe is attached to the upper shoe and the lower shoe. (11) In the above (10), the first jig mounting step may include a jig shape adjustment step of adjusting a shape of the sliding bearing replacement jig in accordance with the attitude and positional relationship of the upper shoe and the lower shoe. (12) In any of (7) to (11) above, the replacement process may include a jig removal process of removing the sliding bearing replacement jig from the sliding bearing, a second jig attachment process of attaching the sliding bearing replacement jig to the replacement sliding bearing in which the replacement part has been replaced, and an installation process of installing the replacement sliding bearing between the lower base plate and the upper base plate. (13) A sliding bearing replacement jig according to one aspect of the present invention has a lower shoe fixing portion at a lower end portion that is detachable from the lower shoe of the sliding bearing, and an upper shoe fixing portion at an upper end portion that is detachable from the upper shoe of the sliding bearing, and a connecting member for connecting the lower shoe and the upper shoe. The shape can be adjusted according to the sliding bearing. . (14) In the above (13), the sliding bearing replacement jig may have an adjustment portion for adjusting the shape. (15) In (14) above, the adjustment unit may have a first adjustment unit for adjusting the shape along a first direction, a second adjustment unit for adjusting the shape along a second direction perpendicular to the first direction, and a third adjustment unit for adjusting the shape along a third direction perpendicular to the first direction and the second direction. Effect of the Invention

[0008] According to the present invention, it is possible to provide a sliding bearing, a method for replacing a sliding bearing, and a jig for replacing a sliding bearing that can reduce the labor costs required for replacing a sliding bearing. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a perspective view of the sliding bearing according to the first embodiment. [Diagram 2] FIG. 2 is a front view of the sliding bearing according to the first embodiment. [Diagram 3] FIG. 2 is a perspective view of the sliding bearing according to the first embodiment in the jack installation process. [Figure 4] FIG. 2 is a front view of the sliding bearing according to the first embodiment in the jack installation process. [Diagram 5] FIG. 2 is a front view of the sliding bearing according to the first embodiment during the jacking up process. [Figure 6] FIG. 2 is a perspective view of the sliding bearing according to the first embodiment during a replacement process. [Figure 7] This is an oblique view showing the state in which a sliding bearing replacement jig that connects the lower shoe and the upper shoe is attached. [Figure 8] This is a front view showing the state in which a sliding bearing replacement jig that connects the lower shoe and the upper shoe is installed. [Figure 9] FIG. 4 is a detailed view of the sliding bearing replacement jig. [Figure 10] This is an oblique view showing the state in which a sliding bearing replacement jig for a modified example that connects a lower shoe and an upper shoe is attached. [Figure 11] This is a front view showing the state in which a sliding bearing replacement jig for a modified example that connects a lower shoe and an upper shoe is attached. [Figure 12] 13 is a detailed view of a sliding bearing replacement jig according to a modified example. FIG. [Figure 13] FIG. 11 is a perspective view of the sliding bearing according to the second embodiment in the jack installation process. [Figure 14] 14 is a cross-sectional view taken along the line A in FIG. 13. [Figure 15] FIG. 11 is a front view of the sliding bearing according to the second embodiment in the jack installation process. [Figure 16] FIG. 11 is a perspective view of the sliding bearing according to the second embodiment in a replacement process. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] (First embodiment) A sliding bearing 100 according to a first embodiment will be described with reference to Figs. FIG. 1 is a perspective view of the sliding bearing 100 according to the first embodiment. FIG. 2 is a front view of the sliding bearing 100 according to the first embodiment. FIG. 3 is a perspective view of the sliding bearing 100 according to the first embodiment in a jack installation process. FIG. 4 is a front view of the sliding bearing 100 according to the first embodiment in a jack installation process. FIG. 5 is a front view of the sliding bearing 100 according to the first embodiment in a jack up process. FIG. 6 is a perspective view of the sliding bearing 100 according to the first embodiment in a replacement process.

[0011] The sliding bearing 100 according to the first embodiment is installed between a substructure DS and a superstructure US in, for example, a building, a bridge, etc. The sliding bearing 100 includes a lower shoe 10 and an upper shoe 20.

[0012] The sliding bearing 100 comprises a lower shoe 10 having a lower base plate 11 supported by a lower structure DS, and an upper shoe 20 which is placed so as to be freely slidable on the lower shoe sliding surface 10F of the lower shoe 10 and has an upper base plate 21 supported by an upper structure US. A slider 30 is appropriately provided between the lower shoe 10 and the upper shoe 20. The slider 30 may be formed integrally with either the lower shoe 10 or the upper shoe 20. The lower shoe 10 and the upper shoe 20 are separate.

[0013] The lower shoe 10 has a downwardly concave spherical surface on its upper surface that becomes the lower shoe sliding surface 10F. The upper shoe 20 has an upwardly concave spherical surface on its lower surface that becomes the upper shoe sliding surface 20F. The slider 30 has a downwardly convex slider lower sliding surface 31F on its lower surface that slides against the lower shoe sliding surface 10F, and has an upwardly convex slider upper sliding surface 32F on its upper surface that slides against the upper shoe sliding surface 20F.

[0014] The surface pressure acting on the slider 30 may be 20 MPa or more. In particular, the surface pressure acting on the slider upper sliding surface 32F of the slider 30 may be 30 MPa or more. The surface pressure acting on the upper shoe sliding surface 20F may be 30 MPa or more. In the case where a horizontal shear force acts between the upper structure US and the lower structure DS, which is a design external force, in a state where a surface pressure of such magnitude is acting, the sliding bearing 100 can be designed so that the upper shoe 20 (or the slider 30) slides along the lower shoe sliding surface 10F or the lower shoe 10 (or the slider 30) slides along the upper shoe sliding surface 20F, thereby making it possible to reduce the dimensions of the sliding bearing 100.

[0015] The sliding bearing 100 according to the first embodiment is a so-called single type that slides between the slider upper sliding surface 32F and the upper shoe sliding surface 20F and is relatively movable in the horizontal direction at one location between the slider upper sliding surface 32F and the upper shoe sliding surface 20F, but the sliding bearing 100 to be replaced is not limited to this. For example, the sliding bearing 100 may be a so-called double type that slides at two locations, between the slider lower sliding surface 31F and the lower shoe sliding surface 10F and between the slider upper sliding surface 32F and the upper shoe sliding surface 20F, and is relatively movable in the horizontal direction at these two locations. Also, for example, the sliding bearing 100 may not have the slider 30, and may slide at one location between the lower shoe sliding surface 10F and the upper shoe sliding surface 20F. In addition, in the sliding bearing 100 of the first embodiment, the set of the slider lower sliding surface 31F and the lower shoe sliding surface 10F, and the set of the slider upper sliding surface 32F and the upper shoe sliding surface 20F are both spherical surfaces, but this is not limited to this, and either or both may be flat surfaces.

[0016] The lower shoe sliding surface 10F and the slider lower sliding surface 31F are in slidable contact with each other, optionally via a friction material (not shown). The upper shoe sliding surface 20F and the slider upper sliding surface 32F are in slidable contact with each other, appropriately via a friction material.

[0017] (friction material) The friction material may be, for example, a sheet made of a resin such as fiber-reinforced polytetrafluoroethylene (PTFE). The friction material is provided between the slider 30 and the upper shoe 20 or the lower shoe 10. The friction material covers the slider upper sliding surface 32F or the slider lower sliding surface 31F. The friction material may cover the lower shoe sliding surface 10F or the upper shoe sliding surface 20F. The friction material only needs to be interposed between the opposing sliding surfaces, and may be attached to either the slider upper sliding surface 32F or the slider lower sliding surface 31F by an adhesive or the like or mechanically fixed thereto, or may be attached to either the lower shoe sliding surface 10F or the upper shoe sliding surface 20F by an adhesive or the like or mechanically fixed thereto. The friction material may be formed of a double woven fabric. The double woven fabric may be formed of polytetrafluoroethylene fibers (PTFE fibers) and fibers (high strength fibers) having a higher tensile strength than the PTFE fibers. Examples of fibers having a higher tensile strength than the PTFE fibers include polyamides such as nylon 6·6, nylon 6, or nylon 4·6, polyesters such as polyethylene terephthalate (PET), polytrimethylene terephthalate, polybutylene terephthalate, or polyethylene naphthalate, or fibers such as para-aramid. Examples of fibers include meta-aramid, polyethylene, polypropylene, glass, carbon, polyphenylene sulfide (PPS), LCP, polyimide, or PEEK. Furthermore, fibers such as heat-sealed fibers, cotton, and wool may be used. Among these, PPS fibers are preferable because of their excellent chemical resistance and hydrolysis resistance and extremely high tensile strength.

[0018] The lower shoe 10 is located below the sliding bearing 100, i.e., below the upper shoe 20. The lower shoe 10 has a lower base plate 11 on its lower side.

[0019] The lower base plate 11 is provided in surface contact with the upper surface of the substructure DS. This allows the bearing pressure acting from the lower shoe 10 to be distributed and transmitted to the substructure DS. This reduces the surface pressure acting on the lower surface of the substructure DS. The lower base plate 11 is, for example, a steel plate-like body. The lower base plate 11 is always subjected to the supporting pressure from the lower shoe 10 and the reaction force and bending moment from the substructure DS. When the sliding bearing 100 is replaced, the supporting pressure from the jack J and the reaction force and bending moment from the substructure DS act on it, so that it has sufficient rigidity to prevent the substructure DS from being damaged by deformation due to these external forces. The lower base plate 11 may have the same shape as the upper base plate 21 in a plan view. The lower base plate 11 is fixed to the substructure DS by an appropriate fixing means such as a fastener combining an anchor bolt and a nut, welding, or the like.

[0020] The lower shoe 10 and the lower base plate 11 are connected by a detachable lower connector 12. The lower connector 12 is engaged with the lower shoe 10 so that it can be attached and detached from above the lower shoe 10. The lower connector 12 may be, for example, a bolt. When the lower connector 12 is a bolt, the lower base plate 11 has a female threaded hole that opens on the upper surface and into which the bolt can be screwed. The lower shoe 10 has a through hole into which the bolt can be inserted or screwed. When the lower shoe 10 and the lower base plate 11 are connected, the head of the bolt is engaged with the upper surface of the lower shoe 10, and the male thread of the bolt passes through the through hole of the lower shoe 10 and is screwed into the female threaded hole of the lower base plate 11. As a result, the lower connector 12 can be brought into approach from above the lower shoe 10 and can engage the lower shoe 10 with the lower base plate 11 by the lower connector 12. The lower connector 12 can connect or disconnect the lower shoe 10 and the lower base plate 11.

[0021] The lower base plate 11 may support a plurality of lower shoes 10. This allows the supporting pressure received from the plurality of lower shoes 10 to be distributed by the single lower base plate 11 and transmitted to the substructure DS.

[0022] The upper shoe 20 is located at the upper part of the sliding bearing 100, i.e., above the lower shoe 10. The upper shoe 20 has an upper base plate 21 on its upper part.

[0023] The upper base plate 21 is provided in surface contact with the underside of the upper structure US. This allows the support pressure acting from the upper shoe 20 to be distributed and transmitted to the upper structure US. This reduces the surface pressure acting on the underside of the upper structure US. The upper base plate 21 is, for example, a steel plate-like body. The upper base plate 21 is always subjected to supporting pressure from the upper shoe 20, and a reaction force and bending moment from the superstructure US. When the sliding bearing 100 is replaced, the upper base plate 21 is also subjected to supporting pressure from the jack J, and a reaction force and bending moment from the superstructure US. Therefore, the upper base plate 21 has sufficient rigidity to prevent deformation due to these external forces from damaging the superstructure US. The upper base plate 21 may have the same shape as the lower base plate 11 in a plan view. The upper base plate 21 is fixed to the superstructure US by an appropriate fixing means such as a fastener combining an anchor bolt and a nut, welding, or the like.

[0024] The upper shoe 20 and the upper base plate 21 are connected by a detachable upper connector 22. The upper connector 22 is engaged with the upper shoe 20 so that it can be attached and detached from below the upper shoe 20. The upper connector 22 may be, for example, a bolt. When the upper connector 22 is a bolt, the upper base plate 21 has a female threaded hole that opens on the lower surface and into which the bolt can be screwed. The upper shoe 20 has a through hole into which the bolt can be inserted or screwed. When the upper shoe 20 and the upper base plate 21 are connected, the head of the bolt is engaged with the lower surface of the upper shoe 20, and the male thread of the bolt passes through the through hole of the upper shoe 20 and is screwed into the female threaded hole of the upper base plate 21. As a result, the upper connector 22 can be brought into approach from below the upper shoe 20, and the upper shoe 20 can be locked to the upper base plate 21 by the upper connector 22. The upper shoe 20 and the upper base plate 21 can be connected or separated by the upper connector 22.

[0025] Here, the lower base plate 11 includes a lower support surface 11S that receives the reaction force of the jack J. The upper base plate 21 faces the lower support surface 11S and includes an upper support surface 21S that receives the reaction force of the jack J. An installation space JS in which the jack J can be installed is provided between the lower support surface 11S and the upper support surface 21S. In a plan view, the lower support surface 11S and the upper support surface 21S overlap each other.

[0026] The lower support surface 11S is a portion of the upper surface of the lower base plate 11 that is exposed to the installation space JS above. In other words, the upper surface of the lower base plate 11 has a region that contacts the lower shoe 10 and receives the surface pressure of the lower shoe 10, and the lower support surface 11S that is an upper open region that does not contact the lower shoe 10 and does not receive the surface pressure of the lower shoe 10. In other words, the lower shoe 10 is not disposed above the lower support surface 11S.

[0027] Similarly, the upper bearing surface 21S is a portion of the lower surface of the upper base plate 21 that is exposed to the installation space JS below. In other words, the lower surface of the upper base plate 21 has an area that contacts the upper shoe 20 and receives the surface pressure of the upper shoe 20, and the upper bearing surface 21S that is an area that is not in contact with the upper shoe 20, does not receive the surface pressure of the upper shoe 20, and is open downward. In other words, the upper shoe 20 is not disposed below the upper bearing surface 21S.

[0028] The installation space JS is a space formed between the lower support surface 11S of the lower base plate 11 and the upper support surface 21S on the underside of the upper base plate 21. The installation space JS is cylindrical in shape to match the shape of the jack J, assuming that a normal cylindrical jack J composed of a cylinder and a ram is used. Note that the installation space JS may have a shape larger than the shape of the jack J, as long as it is at least a shape that can accommodate the jack J.

[0029] This allows an installation space JS for installing the jack J to be secured between the lower base plate 11 and the upper base plate 21 when replacing replacement parts that are part or all of the components of the existing sliding bearing 100 installed between the lower structure DS and the upper structure US. The reaction force when jacking up the upper structure US with the jack J can be received by the lower base plate 11 and the upper base plate 21. The reaction force when jacking up the upper structure US with the jack J is dispersed by the lower base plate 11 and transmitted to the lower structure DS, and dispersed by the upper base plate 21 and transmitted to the upper structure US, so that the surface pressure acting on the lower structure DS and the upper structure US can be reduced. Therefore, when replacing replacement parts that are part or all of the components of the existing sliding bearing 100, it is not necessary to reinforce the lower structure DS or the upper structure US so that they are not damaged by the reaction force of jacking up by the jack J, or to specially secure a space for installing the jack J, and the upper structure US can be jacked up and the replacement parts of the sliding bearing 100 can be easily replaced. Therefore, in cases where the substructure DS is too small to secure a place to install a jack, or where the substructure DS has a place to install a jack but the strength of the substructure DS at that place is low and cannot withstand the jack reaction force, conventionally, reinforcement work on the substructure DS was required to add a place to install the jack, but with the sliding bearing 100 of this embodiment, such reinforcement work is not required and the sliding bearing 100 can be replaced by utilizing the installation space between the lower support surface and the upper support surface where the jack can be installed. Therefore, the cost required for replacing the sliding bearing 100 can be reduced.

[0030] Hereinafter, the sliding bearing 100 according to the first embodiment will be described in chronological order, along with a method for replacing the sliding bearing 100. Fig. 3 is a perspective view of the sliding bearing 100 according to the first embodiment in a jack installation process. Fig. 4 is a front view of the sliding bearing 100 according to the first embodiment in a jack installation process. Fig. 5 is a front view of the sliding bearing 100 according to the first embodiment in a jack up process. Fig. 6 is a perspective view of the sliding bearing 100 according to the first embodiment in a replacement process.

[0031] The method for replacing the sliding bearing 100 includes a jack installation process of installing a jack J in the installation space JS, a jack up process of using the jack J to press and lift the upper base plate 21 attached to the superstructure US, and a replacement process of replacing replacement parts that make up the sliding bearing 100. A method for replacing the sliding bearing 100 will now be described in detail.

[0032] As shown in Figures 1 and 2, a sliding bearing 100 to be replaced is installed between the superstructure US and the substructure DS. The sliding bearing 100 includes a lower shoe 10 having a lower base plate 11 supported by the substructure DS, and an upper shoe 20 having an upper base plate 21 slidably placed on the lower shoe sliding surface 10F of the lower shoe 10 and supported by the superstructure US. The lower base plate 11 includes a lower bearing surface 11S that receives the reaction force of the jack J. The upper base plate 21 includes an upper bearing surface 21S that receives the reaction force of the jack J. An installation space JS in which the jack J can be installed is provided between the lower bearing surface 11S and the upper bearing surface 21S.

[0033] The upper base plate 21 is fixed to the upper structure US by suitable fixing means such as anchor bolts. The upper shoe 20 is detachably attached to the upper base plate 21 by upper connectors 22 such as bolts. The lower base plate 11 is fixed to the lower structure DS by suitable fixing means such as anchor bolts. The lower shoe 10 is detachably attached to the lower base plate 11 by lower connectors 12 such as bolts.

[0034] (Jack installation process) (1) First, a jack J is installed in the installation space JS shown in FIGS. 1 and 2 as shown in FIGS. 3 and 4 (jack installation step). In detail, as shown in Fig. 2, the lower surface of the jack J is placed on the lower support surface 11S, and the upper surface of the jack J is placed opposite the upper support surface 21S. As shown in Figs. 1 and 2, the sliding bearing 100 according to the first embodiment has two installation spaces JS for the jack J, and a jack J is installed in each installation space JS. In this way, since the lower base plate 11 of the sliding bearing 100 includes the lower support surface 11S, the jack J can be placed on it when replacing the sliding bearing 100. In addition, the jack J may be, for example, a hydraulic jack that moves the ram back and forth by sending pressurized oil to a cylinder using an electric hydraulic pump. At this point in time, the jack J faces the upper bearing surface 21S of the upper base plate 21, but is not receiving any load from the superstructure US.

[0035] (First jig installation process) (2) Next, as appropriate, as shown in Figures 7 and 8, a sliding bearing replacement jig 500 that connects the upper shoe 20 and the lower shoe 10 is attached to the upper shoe 20 and the lower shoe 10 (first jig attachment process). The first jig attachment process may be performed after the jacking up process described later. 7 and 8, the sliding bearing replacement jig 500 is attached to the lower shoe 10 and the upper shoe 20 so as to straddle the two. This makes it possible to maintain the attitude and positional relationship between the lower shoe 10 and the upper shoe 20. Therefore, even if the object of replacement is a replacement part for a sliding bearing having a sliding surface with low friction and the attitude or positional relationship between the lower shoe 10 and the upper shoe 20 is easily shifted by a small external force, the work accompanying the movement of the sliding bearing 100 in the subsequent replacement process can be performed safely. Further details of the sliding bearing replacement jig 500 will be described later.

[0036] (Jig shape adjustment process) (2-1) Here, the shape of the sliding bearing replacement jig 500 is adjusted appropriately in accordance with the attitude and positional relationship of the upper shoe 20 and the lower shoe 10 (jig shape adjustment process). As a result, the sliding support replacement jig 500, whose shape has been adjusted to match the attitude and positional relationship between the lower shoe 10 and the upper shoe 20, represents the attitude and positional relationship between the lower shoe 10 and the upper shoe 20, so when returning the lower shoe 10 and the upper shoe 20 removed from the lower base plate 11 and the upper base plate 21 to their original positions, the lower shoe 10 and the upper shoe 20 are attached to the sliding support replacement jig 500, whose shape has been adjusted, so that the attitude and positional relationship between the lower shoe 10 and the upper shoe 20 before removal can be made the same as the attitude and positional relationship between the lower shoe 10 and the upper shoe 20 after removal. Therefore, the attitude and positional relationship between the lower shoe 10 and the upper shoe 20 after removal can be adjusted to match the attitude and positional relationship between the substructure DS and the upper structure US.

[0037] (3) Next, following the first jig mounting step, the upper connector 22 is removed, and the upper shoe 20 is separated from the upper base plate 21. Also, the lower connector 12 is removed, and the lower shoe 10 is separated from the lower base plate 11.

[0038] (Jacking up process) (4) Next, as shown in Fig. 5, the upper base plate 21 attached to the superstructure US is supported and lifted by the jack J (jacking up process). This separates the upper base plate 21 and the upper shoe 20.

[0039] (Replacement process) (5) Next, the replacement parts that make up the sliding bearing 100 are replaced (replacement process).

[0040] 5 and 6, with the upper base plate 21 supported by the jack J, for example, the lower shoe 10 and the upper shoe 20 constituting the existing sliding bearing 100 are pushed out or pulled out horizontally (in the direction indicated by the outlined arrow) using a jack (not shown) or the like, and taken out through the gap between adjacent jacks J. For this reason, the shortest horizontal distance between adjacent jacks J is greater than the minimum horizontal dimension of the replacement parts (for example, the lower shoe 10 and the upper shoe 20) constituting the sliding bearing 100. In addition, at this time, if the lower shoe 10 and the upper shoe 20 are connected by the aforementioned sliding bearing replacement jig 500, the lower shoe 10 and the upper shoe 20 will resist the sliding force, making it easier to move the lower shoe 10 and the upper shoe 20 while maintaining their posture and positional relationships.

[0041] Here, the replacement part may be a friction material (not shown). The friction material may be, for example, a sheet-like body provided on the slider upper sliding surface 32F, which is the upper surface of the slider 30, and covering the upper shoe sliding surface 20F. The friction material may be, for example, a fiber-reinforced resin sheet-like body covering the lower shoe sliding surface 10F. In addition, lubricating grease used in combination with the friction material may be replenished or reapplied when replacing.

[0042] The above-mentioned friction material may be used instead of the friction material (for example, a sheet-like body or the like provided on the slider upper sliding surface 32F, which is the upper surface of the slider 30) that is a replacement part of the existing sliding bearing 100 to be replaced. The existing sliding bearing 100 may be removed from between the upper structure US and the lower structure DS, and the above-mentioned friction material may be newly added to the removed existing sliding bearing 100, and the replacement sliding bearing with the added friction material may be returned to the original position of the existing sliding bearing 100 between the upper structure US and the lower structure DS. The friction material that is a replacement part may be a film of PTFE or the like baked onto the lower shoe sliding surface 10F of the lower shoe 10. It is also possible to replace only some of the components constituting the sliding bearing 100 as replacement parts, and reuse the remaining components constituting the sliding bearing 100 without replacing them. All of the parts constituting the sliding bearing 100 may be replaced as replacement parts.

[0043] Here, when the existing sliding bearing 100 to be replaced includes a slider 30 that is slidably provided between the upper shoe sliding surface 20F, which is a spherical surface formed on the upper shoe 20, and the lower shoe sliding surface 10F, which is a spherical surface formed on the lower shoe 10, the replacement part may be the slider 30. This makes it possible to replace only the slider 30, without replacing the lower shoe 10 and the upper shoe 20, as necessary. In addition, the replacement parts may be, for example, only the lower shoe 10 and the upper shoe 20. The replacement part may be, for example, only the friction material installed on the slider 30.

[0044] (5-1) Here, the replacement process may include a jig removal process of removing the sliding bearing replacement jig 500 from the sliding bearing 100, a part replacement process of replacing replacement parts that constitute the sliding bearing 100, a second jig attachment process of attaching the sliding bearing replacement jig 500 to a replacement sliding bearing (not shown) whose replacement parts have been replaced, and an installation process of installing the replacement sliding bearing between the lower base plate 11 and the upper base plate 21.

[0045] Specifically, in the jig removal step, the upper end portion 520 of the sliding bearing replacement jig 500 is removed from the upper shoe 20 , and the lower end portion 510 is removed from the lower shoe 10 .

[0046] In the part replacement process, the replacement part constituting the sliding bearing 100 is replaced with an alternative part. For example, if the replacement part of the existing sliding bearing 100 to be replaced is a friction material provided on the slider upper sliding surface 32F, which is the upper surface of the slider 30, and covers the upper shoe sliding surface 20F of the upper shoe 20, the friction material, which is the replacement part, is removed from the slider upper sliding surface 32F of the slider 30, and instead, the friction material, which is the alternative part, is attached to the slider upper sliding surface 32F of the slider 30. Next, a replacement sliding support (not shown) is assembled in place of the replacement part and replaced with the alternative part.

[0047] In the second jig attachment process, a sliding bearing replacement jig 500 is attached to the lower shoe 10 and the upper shoe 20 of the replacement sliding bearing that have been replaced with the alternative part in place of the replacement part, and the lower shoe 10 and the upper shoe 20 are connected.

[0048] In the installation process, the replacement sliding bearing replaced with the substitute part is returned to the original position of the existing sliding bearing 100 between the upper base plate 21 and the lower base plate 11 and installed.

[0049] (6)Then, release the pressure on jack J and transfer the load of the superstructure from jack J to the replacement sliding support. Thereafter, the sliding bearing replacement jig 500 is removed from the replacement sliding bearing. Also, the jack J is removed as appropriate.

[0050] In this way, the method for replacing the sliding bearing 100 according to the embodiment includes at least the above-mentioned jack installation step, jack up step, and replacement step. This makes it possible to replace the replacement parts constituting the sliding bearing 100 without requiring large-scale construction or special tools, and without damaging the substructure DS and the superstructure US.

[0051] (Sliding bearing replacement jig) Here, the sliding bearing replacement jig 500 will be described. Fig. 7 is a perspective view showing a state in which the sliding bearing replacement jig 500 is attached to connect the lower shoe 10 and the upper shoe 20. Fig. 8 is a front view showing a state in which the sliding bearing replacement jig 500 is attached to connect the lower shoe 10 and the upper shoe 20. Fig. 9 is a detailed view of the sliding bearing replacement jig 500.

[0052] As shown in FIGS. 7 and 8, the sliding bearing replacement jig 500 is attached to the lower shoe 10 and the upper shoe 20, and connects the lower shoe 10 and the upper shoe 20 together. The sliding bearing replacement jig 500 has, at its lower end 510, a lower shoe fixing portion 511 that is detachable from the lower shoe 10 of the sliding bearing 100. In addition, the sliding bearing replacement jig 500 has, at its upper end 520, an upper shoe fixing portion 521 that is detachable from the upper shoe 20 of the sliding bearing 100. This makes it possible to maintain the posture and positional relationship between the lower shoe 10 and the upper shoe 20 so that they do not slide and shift due to external forces acting as a result of movement when replacing replacement parts for the sliding bearing 100.

[0053] The lower end portion 510 faces the surface of the lower shoe 10 and may have, for example, a conical surface according to the surface shape of the lower shoe 10 . The lower shoe fixing part 511 may have a structure in which, for example, a bolt (not shown) is passed through a horizontally extending long hole provided in the lower end part 510 to fix it to a screw hole formed in the lower shoe 10. Alternatively, the lower shoe fixing part 511 may have a structure in which, for example, the lower end part 510 and the surface of the lower shoe 10 are temporarily bonded with an appropriate adhesive.

[0054] The upper end portion 520 faces the surface of the upper shoe 20 and may have, for example, a flat surface according to the surface shape of the upper shoe 20 . The upper shoe fixing part 521 may have a structure in which, for example, a bolt (not shown) is passed through a horizontally extending long hole provided in the upper end part 520 to fix it to a screw hole formed in the upper shoe 20. Alternatively, the lower shoe fixing part 511 may have a structure in which, for example, the lower end part 510 and the surface of the lower shoe 10 are temporarily bonded with an appropriate adhesive.

[0055] 9, the sliding bearing replacement jig 500 may have an adjustment portion 530 for adjusting the shape. Note that there may be a plurality of adjustment portions 530. The sliding bearing replacement jig 500 may have an upper jig 500U that is attached to the upper shoe 20 and a lower jig 500D that is attached to the lower shoe 10.

[0056] The lower jig 500D includes a lower end portion 510 having a lower shoe fixing portion 511 attached to the lower shoe 10, a lower first horizontal portion 512 extending from the lower end portion 510 in a direction away from the lower shoe 10 in the horizontal direction, a lower vertical portion 513 extending upward from the outer end of the lower first horizontal portion 512, and a lower second horizontal portion 514 extending from the upper end of the lower vertical portion 513 in a direction toward the lower shoe 10 in the horizontal direction. The lower second horizontal portion 514 has an adjustment portion 530, and is adjustably connected to the upper horizontal portion 523 of the upper jig 500U via the adjustment portion 530.

[0057] The upper jig 500U includes an upper end portion 520 having an upper shoe fixing portion 521 attached to the upper shoe 20, an upper vertical portion 522 extending downward from the upper end portion 520, and an upper horizontal portion 523 extending in the horizontal direction from the lower end of the upper vertical portion 522 in a direction away from the upper shoe 20. The upper horizontal portion 523 has an adjustment portion 530, and is adjustably connected to a lower second horizontal portion 514 of the lower jig 500D via the adjustment portion 530.

[0058] The sliding bearing replacement jig 500 may include an adjustment unit 530 having a first adjustment unit 531 for adjusting the shape along the first direction Z, a second adjustment unit 532 for adjusting the shape along the second direction X perpendicular to the first direction Z, and a third adjustment unit 533 for adjusting the shape along the third direction Y perpendicular to the first direction Z and the second direction X. The first adjustment unit 531 is adapted to adjust the mounting position of the sliding bearing replacement jig 500 relative to the lower shoe 10 in the first direction Z, which is a vertical direction. The second adjustment unit 532 is adapted to adjust the mounting position of the sliding bearing replacement jig 500 relative to the upper shoe 20 in the second direction X, which is a horizontal direction. The third adjustment unit 533 is adapted to adjust the position of the lower jig 500D relative to the upper jig 500U in the third direction Y, which is a horizontal direction and perpendicular to the second direction X. The third adjustment section 533 may connect the upper jig 500U and the lower jig 500D. In this way, since the sliding bearing replacement jig 500 has an adjustment section 530 for adjusting the shape, the shape of the sliding bearing replacement jig 500 can be adjusted with the desired degree of freedom to match the attitude and positional relationship between the lower structure DS and the upper structure US before the lower shoe 10 and the upper shoe 20 are moved.

[0059] (Modification of sliding bearing replacement jig) Next, a description will be given of a sliding bearing replacement jig 600 which is a modified example of the above-mentioned sliding bearing replacement jig 500. Note that, hereinafter, a description of parts common to the above-mentioned sliding bearing replacement jig 500 may be omitted. Fig. 10 is a perspective view showing the attached state of a sliding bearing replacement jig 600 according to a modified example that connects the lower shoe 10 and the upper shoe 20. Fig. 11 is a front view showing the attached state of a sliding bearing replacement jig 600 according to a modified example that connects the lower shoe 10 and the upper shoe 20. Fig. 12 is a detailed view of the sliding bearing replacement jig 600 according to the modified example.

[0060] 10 to 12, a modified sliding bearing replacement jig 600 is attached to the lower shoe 10 and the upper shoe 20, similar to the above-mentioned sliding bearing replacement jig 500, and connects the lower shoe 10 and the upper shoe 20. The sliding bearing replacement jig 600 has a lower shoe fixing part 611 at a lower end 610 that is detachable from the lower shoe 10 of the sliding bearing 100. In addition, the sliding bearing replacement jig 600 has an upper shoe fixing part 621 at an upper end 620 that is detachable from the upper shoe 20 of the sliding bearing 100. Here, the lower end 610 of the modified sliding bearing replacement jig 600 faces the flat vertical surface of the lower shoe 10 and has a flat surface corresponding to the vertical surface. This allows the jig to be securely attached to the flat vertical surface of the lower shoe 10 as shown in Figs. 10 and 11.

[0061] The lower end 610 faces the surface of the lower shoe 10 and may have, for example, a conical surface according to the surface shape of the lower shoe 10 . The lower shoe fixing part 611 may have a structure in which, for example, a bolt (not shown) is passed through a horizontally extending elongated hole provided in the lower end part 610 to fix it to a screw hole formed in the lower shoe 10. Alternatively, the lower shoe fixing part 611 may have a structure in which, for example, the lower end part 610 and the surface of the lower shoe 10 are temporarily bonded with an appropriate adhesive.

[0062] The upper end 620 faces the surface of the upper shoe 20 and may have, for example, a flat surface according to the surface shape of the upper shoe 20 . The upper shoe fixing part 621 may have a structure in which, for example, a bolt (not shown) is passed through a horizontally extending long hole provided in the upper end part 620 to fix it to a screw hole formed in the upper shoe 20. Alternatively, the lower shoe fixing part 611 may have a structure in which, for example, the lower end part 610 and the surface of the lower shoe 10 are temporarily bonded with an appropriate adhesive.

[0063] 12, the sliding bearing replacement jig 600 may have an adjustment portion 630 for adjusting the shape. Note that there may be a plurality of adjustment portions 630. The sliding bearing replacement jig 600 may have an upper jig 600U that is attached to the upper shoe 20 and a lower jig 600D that is attached to the lower shoe 10.

[0064] The lower jig 600D includes a lower end portion 610 having a lower shoe fixing portion 611 attached to the lower shoe 10, a lower first horizontal portion 612 extending from the lower end portion 610 in a direction away from the lower shoe 10 in the horizontal direction, a lower vertical portion 613 extending upward from the outer end of the lower first horizontal portion 612, and a lower second horizontal portion 614 extending from the upper end of the lower vertical portion 613 in a direction toward the lower shoe 10 in the horizontal direction. The lower second horizontal portion 614 has an adjustment portion 630, and is adjustably connected to the upper horizontal portion 623 of the upper jig 600U via the adjustment portion 630.

[0065] The upper jig 600U includes an upper end 620 having an upper shoe fixing portion 621 attached to the upper shoe 20, an upper vertical portion 622 extending downward from the upper end 620, and an upper horizontal portion 623 extending in the horizontal direction from the lower end of the upper vertical portion 622 in a direction away from the upper shoe 20. The upper horizontal portion 623 has an adjustment portion 630, and is adjustably connected to a lower second horizontal portion 614 of the lower jig 600D via the adjustment portion 630.

[0066] The sliding bearing replacement jig 600 may have a first adjustment part 631, a second adjustment part 632, and a third adjustment part 633. The first adjustment part 631 is adapted to adjust the mounting position of the sliding bearing replacement jig 600 relative to the lower shoe 10 in a first direction Z, which is a vertical direction. The second adjustment part 632 is adapted to adjust the mounting position of the sliding bearing replacement jig 600 relative to the upper shoe 20 in a second direction X, which is a horizontal direction. The third adjustment part 633 is adapted to adjust the position of the lower jig 600D relative to the upper jig 600U in a third direction Y, which is a horizontal direction and perpendicular to the second direction X. The third adjustment part 633 may connect the upper jig 600U and the lower jig 600D. In this way, since the sliding bearing replacement jig 600 has an adjustment section 630 for adjusting the shape, the shape of the sliding bearing replacement jig 600 can be adjusted with the desired degree of freedom to match the attitude and positional relationship between the lower structure DS and the upper structure US before the lower shoe 10 and the upper shoe 20 are moved.

[0067] Second embodiment Next, a sliding bearing 200 according to a second embodiment will be described. Fig. 13 is a perspective view of the sliding bearing 200 according to the second embodiment in a jack installation process. Fig. 14 is a cross-sectional view taken along the line A in Fig. 13. Fig. 15 is a front view of the sliding bearing 200 according to the second embodiment in a jack installation process. Fig. 16 is a perspective view of the sliding bearing 200 according to the second embodiment in a replacement process. Note that descriptions of matters common to the sliding bearing 100 of the first embodiment may be omitted.

[0068] As shown in Fig. 13 to Fig. 15, the sliding bearing 200 according to the second embodiment is a sliding bearing 200 installed between a substructure DS and an upper structure US, similar to the sliding bearing 100 according to the first embodiment. The sliding bearing 200 includes a lower shoe 10 having a lower base plate 11 supported by the substructure DS, and an upper shoe 20 having an upper base plate 21 supported by the upper structure US. The lower base plate 11 includes a lower bearing surface 11S that receives the reaction force of the jack J. The upper base plate 21 faces the lower bearing surface 11S and includes an upper bearing surface 21S that receives the reaction force of the jack J. An installation space JS in which the jack J can be installed is provided between the lower bearing surface 11S and the upper bearing surface 21S.

[0069] The sliding bearing 200 includes a lower shoe 10 having a spherical lower shoe sliding surface 10F, an upper shoe 20 having a spherical upper shoe sliding surface 20F, and a slider 30 that is disposed between the lower shoe 10 and the upper shoe 20 and slides horizontally relative to the lower shoe sliding surface 10F and the upper shoe sliding surface 20F. The sliding bearing 200 according to the second embodiment is a so-called double type.

[0070] The sliding bearing 200 has four installation spaces JS for the jacks J. This allows the load received from the superstructure US to be shared by the number of jacks J, reducing the load on one jack J and allowing the jack J to be smaller than when the load is shared by fewer jacks J. In addition, the bending moment acting on the lower base plate 11 or the upper base plate 21 can be reduced, allowing the rigidity of the lower base plate 11 and the upper base plate 21 to be reduced compared to when the load is shared by fewer jacks J.

[0071] Here, as shown in Fig. 13 or 15, the lower connector 12 and the upper connector 22 are preferably disposed at positions where they do not overlap each other in a plan view. The lower connector 12 and the upper connector 22 are disposed, for example, with a phase shift of 45 degrees in a plan view. This allows sufficient space to be secured above the lower connector 12 and below the upper connector 22, so that the lower connector 12 and the upper connector 22 do not interfere with each other when attaching the lower connector 12 or the upper connector 22.

[0072] 16, with the upper base plate 21 supported by the jack J, for example, the lower shoe 10 and the upper shoe 20 constituting the existing sliding bearing 200 are pushed out or pulled out horizontally using a jack (not shown) or the like, and taken out through the gap between adjacent jacks J. For this reason, the shortest horizontal distance between adjacent jacks J is greater than the minimum horizontal dimension of the replacement parts (for example, the lower shoe 10 and the upper shoe 20) constituting the sliding bearing 200.

[0073] In addition, when replacing the sliding bearing 200, a sliding bearing replacement jig 700 as shown in Fig. 16 may be used. The sliding bearing replacement jig 700 includes a lower end 710 having a lower contact surface that contacts the surface of the lower shoe 10, an upper end 720 having an upper contact surface that contacts the surface of the upper shoe 20, and a vertical part 730 that connects the lower end 710 and the upper end 720 and extends in the vertical direction. Here, the lower end 710 and the upper end 720 are arranged in a posture in which the surface of the lower shoe 10 and the lower contact surface correspond to each other, and the surface of the upper shoe 20 and the upper contact surface correspond to each other, with respect to the vertical part 730. As a result, when replacing the sliding bearing 100, the lower shoe 10 and the upper shoe 20 can be moved while maintaining their posture and positional relationship.

[0074] (Other embodiments) Although the embodiment has been described in detail above with reference to the drawings, the specific configuration is not limited to the above, and various design modifications and the like are possible. Furthermore, the elements of the above-described embodiments may be freely combined. For example, in the sliding bearing 100 according to the first embodiment, the installation spaces JS for the jack J may be provided in four places. The sliding bearing 100 according to the first embodiment may be a sliding bearing 100 having a flat lower shoe sliding surface 10F and a flat upper shoe sliding surface 20F. In the sliding bearing 100 according to the first embodiment, the lower connector 12 engaged with the lower shoe 10 and the upper connector 22 engaged with the upper shoe 20 of the sliding bearing 200 according to the second embodiment may be arranged with a phase shift in a plan view. In the sliding bearing 100 according to the second embodiment, the installation spaces JS for the jack J may be provided in two places. The sliding bearing 200 according to the second embodiment may be a sliding bearing 100 having a spherical lower shoe sliding surface 10F and a spherical upper shoe sliding surface 20F. The sliding bearing 100 according to the first embodiment or the sliding bearing 200 according to the second embodiment may be a sliding bearing having one sliding surface.

[0075] The sliding bearing 100, 200 of this embodiment is installed between the substructure DS and the superstructure US. The sliding bearing 100, 200 includes a lower shoe 10 having a lower base plate 11 supported by the substructure DS, and an upper shoe 20 having an upper base plate 21 slidably placed on the lower shoe sliding surface 10F of the lower shoe 10 and supported by the superstructure US. The lower base plate 11 includes a lower bearing surface 11S that receives the reaction force of the jack J. The upper base plate 21 faces the lower bearing surface 11S and includes an upper bearing surface 21S that receives the reaction force of the jack J. The sliding bearing 100, 200 has an installation space JS between the lower bearing surface 11S and the upper bearing surface 21S where the jack J can be installed. As a result, when replacing replacement parts that are some or all of the components of the existing sliding bearing 100, the superstructure US can be jacked up without the need to reinforce the substructure DS or superstructure US so that they are not damaged by the reaction force of jacking up with the jack J, or to specially secure space for installing the jack J, and replacement parts of the sliding bearings 100, 200 can be easily replaced. Therefore, the cost required for replacing the sliding bearings 100, 200 can be reduced.

[0076] The method for replacing the sliding bearings 100, 200 of this embodiment includes a jack installation step of installing a jack J in the installation space JS, a jack-up step of using the jack J to press and lift the upper base plate 21 attached to the superstructure US, and a replacement step of replacing replacement parts that constitute the sliding bearings 100, 200. As a result, when replacing replacement parts that are part or all of the components of the existing sliding bearing 100, it is possible to jack up the superstructure US without having to reinforce the substructure DS or the superstructure US so that they are not damaged by the reaction force of the jack-up by the jack J, or to specially secure a space for installing the jack J, and the replacement parts of the sliding bearings 100, 200 can be easily replaced. Therefore, the cost required for replacing the sliding bearings 100, 200 can be reduced.

[0077] The sliding bearing replacement jig 500, 600, 700 of this embodiment has a lower shoe fixing part 511 at a lower end part 510 that is detachable from the lower shoe 10 of the sliding bearing 100, 200, and has an upper shoe fixing part 521 at an upper end part 520 that is detachable from the upper shoe 20 of the sliding bearing 100, 200, connecting the lower shoe 10 and the upper shoe 20. This makes it possible to maintain the attitude and positional relationship between the lower shoe 10 and the upper shoe 20 so that the lower shoe 10 and the upper shoe 20 do not slide and become misaligned due to external forces acting with the movement when replacing replacement parts for the sliding bearing 100. [Explanation of symbols]

[0078] 10 Lower shoe 10F Lower shoe sliding surface 11 Lower Base Plate 11S Lower bearing surface 12 Lower connector 20 Kamikutsu 20F Upper shoe sliding surface 21 Upper base plate 21S Upper bearing surface 22 Upper connector 30 Slider 31F Slider bottom sliding surface 32F Slider upper sliding surface 100,200 Bearing 500,600,700 Jig for replacing sliding bearings 500D,600D Lower jig 500U,600U Upper jig 510,610,710 Lower end 511,611 Lower shoe fixing part 512,612 Lower 1st horizontal section 513,613 Lower vertical section 514,614 Lower 2nd horizontal section 520,620,720 Upper end 521,621 Upper shoe fixing part 522,622 Upper vertical section 523,623 Upper horizontal part 530,630 Adjustment section 531,631 1st adjustment section 532,632 2nd adjustment section 533,633 3rd adjustment section 730 Vertical section DS undercarriage J Jack JS installation space US superstructure X 2nd direction Y 3rd direction Z 1st direction

Claims

1. A sliding bearing installed between a substructure and a superstructure, a lower shoe having a lower base plate supported by the lower structure; an upper shoe having an upper base plate supported by the upper structure; The lower base plate includes a lower bearing surface that receives a reaction force of a jack, The upper base plate includes an upper bearing surface that faces the lower bearing surface and receives a reaction force of the jack, Between the lower support surface and the upper support surface, there is an installation space in which the jack can be installed in a state of contact with the lower base plate and the upper base plate. A sliding bearing characterized by:

2. A slider is provided that is slidable relative to the lower shoe or the upper shoe.

2. A sliding bearing according to claim 1.

3. The surface pressure acting on the slider is 20 MPa or more.

3. The sliding bearing according to claim 2.

4. The lower base plate supports a plurality of the lower shoes.

4. A sliding bearing according to claim 1 , wherein the sliding bearing is a rotatable member.

5. The lower shoe and the lower base plate are connected by a detachable lower connector, and the upper shoe and the upper base plate are connected by a detachable upper connector.

5. A sliding bearing according to claim 1 , wherein the sliding bearing is a rotatable member.

6. The lower connector and the upper connector are disposed at positions where they do not overlap each other in a plan view.

6. The sliding bearing according to claim 5.

7. a jack installation process for installing the jack in the installation space; a jack-up process of lifting the upper base plate attached to the superstructure by using the jack; A replacement step of replacing replacement parts constituting the sliding bearing. The method for replacing the sliding bearing according to any one of claims 1 to 6.

8. The replacement part is a friction material.

8. The method for replacing a sliding bearing according to claim 7.

9. The sliding bearing includes a slider that is slidable relative to the lower shoe or the upper shoe, The replacement part is the slider.

9. The method for replacing the sliding bearing according to claim 7 or 8.

10. A first jig attachment step of attaching a sliding bearing replacement jig that connects the upper shoe and the lower shoe to the upper shoe and the lower shoe. The method for replacing the sliding bearing according to any one of claims 7 to 9.

11. The first jig mounting step includes a jig shape adjustment step of adjusting the shape of the sliding bearing replacement jig in accordance with the attitude relationship and positional relationship of the upper shoe and the lower shoe. The method for replacing the sliding bearing according to claim 10.

12. The exchanging step includes: a jig removal process of removing the sliding bearing replacement jig from the sliding bearing; A second jig attachment process of attaching the sliding bearing replacement jig to the replacement sliding bearing in which the replacement part has been replaced; and an installation step of installing the replacement sliding bearing between the lower base plate and the upper base plate. The method for replacing a sliding bearing according to any one of claims 7 to 11.

13. The lower end portion has a lower shoe fixing portion that can be attached and detached to the lower shoe of the sliding support. The upper shoe fixing portion is detachably attached to the upper shoe of the sliding bearing at the upper end portion, The lower shoe and the upper shoe are connected to each other, The shape is adjustable according to the sliding bearing A sliding bearing replacement jig characterized by the above.

14. The sliding bearing replacement jig has an adjustment portion for adjusting the shape.

14. The sliding bearing replacement jig according to claim 13.

15. The adjustment unit includes a first adjustment unit for adjusting the shape along a first direction, a second adjustment unit for adjusting the shape along a second direction perpendicular to the first direction, and a third adjustment unit for adjusting the shape along a third direction perpendicular to the first direction and the second direction.

15. The sliding bearing replacement jig according to claim 14.

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