Bearing

Abstract

Provided is a bearing in which a bearing plate can be easily arranged. A bearing (1) is provided with: a cylindrical main body (10); the bearing (1) is provided with a main body (10), and a plurality of bearing plates (20, 30, 40) arranged in the circumferential direction on the inner circumference of the main body (10), the bearing (1) is further provided with a fixing device (10) arranged on the inner circumference of the main body (10), and the fixing device (10) is provided with: a first member (51) having an inclined surface (51d); and second members (52, 53, 54) capable of moving along the inclined surface (51d) of the first member (51).

Description

Technical Field

[0001] The present invention relates to a bearing, for example, a bearing arranged in a relatively rotatable position. Background Art

[0002] In the field of rotary machines, bearings are known that support rotating shafts, etc. Among such bearings, there are bearings that are configured so that when a sliding portion that slidably supports the rotating shaft is worn or damaged, only that portion can be replaced.

[0003] For example, the bearing used in the propulsion device of the ship shown in Patent Document 1 is mainly composed of a main body, a plurality of bearing plates and two stoppers. The main body is formed in a cylindrical shape and is installed on the stern tube, through which a rotating shaft provided with a propulsion propeller is inserted. A plurality of bearing plates are arranged circumferentially along the inner circumferential surface of the main body between two stoppers separated and arranged circumferentially. The bearing plate has a sliding part that bulges in the inner diameter direction. Thus, the bearing shown in Patent Document 1 can support the rotating shaft in a relatively slidable manner. In addition, in the event that any bearing plate is worn, damaged, etc., the damaged bearing plate can be removed and replaced with a new bearing plate.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Utility Model Registration No. 3183964 (page 4, Figure 5 ) Summary of the invention

[0007] Problems to be solved by the invention

[0008] In the bearing of Patent Document 1, a stopper is used to limit the movement of the bearing plate that supports the rotation of the rotating shaft in the circumferential direction. Therefore, the bearing of Patent Document 1 can help the rotating shaft rotate smoothly. However, from the perspective of preventing the bearing plates from falling off, a plurality of bearing plates need to be arranged without gaps between the stoppers that are arranged separately in the circumferential direction. Moreover, when setting and assembling the bearing, a part of the bearing plate is cut off so that it can be arranged without gaps, so the assembly operation is complicated.

[0009] The present invention has been made in view of such problems, and an object of the present invention is to provide a bearing in which bearing plates can be easily arranged.

[0010] Means for solving problems

[0011] In order to solve the above-mentioned problems, the bearing of the present invention comprises: a cylindrical main body; and a plurality of bearing plates, which are arranged circumferentially on the inner periphery of the main body, wherein the bearing also has a fixing device, which is arranged on the inner periphery of the main body, and the fixing device comprises: a first component having an inclined surface; and a second component, which can move along the inclined surface of the first component to press the bearing plate.

[0012] Thus, by relatively moving the second member to one side in the axial direction relative to the first member, the circumferential width of the fixing device is expanded, and the fastening force to the bearing plate can be adjusted. Therefore, the bearing plate can be easily fixed to the inner periphery of the body.

[0013] It can also be that the second component has: an inclined surface opposite to the inclined surface of the first component; and a surface arranged on the circumferential opposite side of the inclined surface, which is parallel to the surface of the bearing plate adjacent to the second component on the second component side, and the inclination angle of the inclined surface of the second component is the same as that of the inclined surface of the first component.

[0014] Thus, when the inclined surfaces of the first and second components are in contact with each other, the second component moves relative to the first component in the axial direction to press the adjacent bearing plates in the circumferential direction. Therefore, the fixing device can stably adjust the fastening force to the bearing plates.

[0015] The first member may be fixed to the main body.

[0016] Thus, the fixing device can easily move the second member relative to the first member in the axial direction.

[0017] The axial length of the second member may be shorter than the axial length of the bearing plate.

[0018] Thus, the second member is less likely to protrude axially outward from the bearing plate.

[0019] A plurality of the second members may be arranged in the axial direction and may be independently movable in the axial direction.

[0020] Thereby, the fixing device can adjust the fastening force for each second member.

[0021] The bearing plates may be provided in a plurality of rows in the axial direction, and at least one second member may be provided for each row of the bearing plates.

[0022] As a result, the fixing device can adjust the fastening force with high precision for each row of bearing plates.

[0023] The fixing device may be capable of reducing the circumferential width by relatively moving the second member to the other axial side with respect to the first member.

[0024] As a result, the bearing plates of the bearing can be replaced easily. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a diagram showing the bearing according to Example 1 of the present invention as viewed from the axial direction.

[0026] Figure 2 is along Figure 1 Arrow A observed in FIG.

[0027] Figure 3 is along Figure 2 The arrow B in the diagram is observed.

[0028] Figure 4 This is a diagram for explaining the bearing plate arranged on the lower side.

[0029] Figure 5 This is a diagram for explaining a bearing plate provided with a protrusion among the bearing plates arranged on the lower side.

[0030] Figure 6 This is a diagram for explaining the bearing plate arranged on the upper side.

[0031] Figure 7 This is a diagram for explaining the second member arranged on the axial rear side.

[0032] Figure 8 This is a diagram for explaining the second member disposed at the center in the axial direction.

[0033] Fig. 9 This is a diagram for explaining the second member arranged on the axially front side.

[0034] Fig.10 This is a diagram for explaining the assembly of a bearing.

[0035] Fig.11 This is a diagram for explaining the assembly of a bearing.

[0036] Fig.12 This is a diagram for explaining the assembly of a bearing.

[0037] Fig.13 This is a diagram for explaining replacement of the bearing plate.

[0038] Fig.14 This is a diagram for explaining another method of fixing the second component.

[0039] Fig.15This is a diagram showing a bearing according to Example 2 of the present invention as viewed from the axial direction.

[0040] Fig.16 It is a figure for demonstrating the fixing device of Example 3 of this invention. DETAILED DESCRIPTION

[0041] Hereinafter, modes for implementing the bearing of the present invention will be described based on examples.

[0042] Example 1

[0043] Reference Figures 1 to 14 The bearing of Example 1 is described. In the following, the directions indicated by the arrows in the figures are described as the directions of the bearing. In addition, the axial direction of the bearing extends along the front-rear direction of the arrow. With respect to the axial direction, one axial side of the present invention is the axial rear side, and the other axial side is the axial front side.

[0044] like Figure 1 As shown, the bearing 1 is a water-lubricated stern tube bearing used in a propulsion device of a ship. The bearing 1 supports a rotating shaft 3 that passes through the stern tube. In addition, the bearing 1 is not limited to ships, and can also be used in rotating machinery such as automobiles or general industrial machinery.

[0045] like Figure 2 As shown, the bearing 1 is mainly composed of a main body 10 , bearing plates 20 , 30 , 40 , a fixing device 50 and a cover 60 .

[0046] The main body 10 is formed into a cylindrical shape with an inner flange and is axially penetrated, that is, in the front-rear direction. The main body 10 includes a base portion 11 and an inner flange portion 12 .

[0047] The base 11 is a cylindrical portion extending in the axial direction. A guide groove 11b (see FIG. 1 ) serving as a recessed portion is formed in the base 11. Figure 3 ), the guide groove 11b is recessed from the inner peripheral surface 11a toward the outer diameter side and is open toward the axial front side and the inner diameter side. The guide groove 11b is formed below the base 11 and at the lower right side when viewed from the axial front side. That is, as described in detail later, the guide groove 11b is formed on the vertical lower side, that is, when the fixing devices 50, 50 are arranged in the horizontal direction, it is formed at a position that is not the lowest part and is phase-shifted with the lowest part.

[0048] In the following, when describing the circumferential direction, the clockwise side and the counterclockwise side may be expressed, but unless otherwise specified, the description is made as if it is viewed from the axial front side of the main body 10. Also, the description "viewed from the axial front side of the main body 10" may be omitted for the corresponding description.

[0049] Similarly, when describing the radial direction, sometimes the inner diameter side and the outer diameter side are expressed based on the radial direction of the main body 10, but unless otherwise specified, the description is based on the radial direction of the main body 10. In addition, the description "based on the radial direction of the main body 10" is sometimes omitted for the corresponding description.

[0050] The inner flange portion 12 is an annular flange portion extending substantially vertically toward the inner diameter side at the rear end of the base portion 11 .

[0051] Furthermore, a cover 60 can be mounted on the front end of the base 11. The cover 60 is formed in an annular shape having a through hole 60a, and the diameter of the through hole 60a is substantially the same as the through hole 12a of the inner flange portion 12 of the body 10. The axis of the cover 60 mounted on the base 11 is arranged in a straight line substantially the same as the axis of the inner flange portion 12.

[0052] Next, the bearing plates 20, 30, and 40 will be described. The bearing plates 20, 30, and 40 are formed to have substantially the same axial dimension L1.

[0053] Reference Figure 3 to Figure 5 The bearing plates 20 and 30 are axially elongated components that are disposed and fixed below the main body 10 .

[0054] The bearing plate 20 is composed of a base member 21 , an elastic member 22 , and a sliding member 23 .

[0055] Reference Figure 4 The base member 21 is a substantially flat plate-shaped member extending in the axial direction and is made of metal. The outer peripheral surface 21a of the base member 21 is curved along the inner peripheral surface 11a of the main body 10 (see Figure 3 ). Thus, when the bearing plate 20 is arranged on the inner periphery of the main body 10, the outer peripheral surface 21a is in surface contact with the inner peripheral surface 11a. In addition, the base member 21 is not limited to being made of metal, and may be made of resin, for example.

[0056] In addition, a cutout 21b is formed on the outer diameter side of the axial rear end of the base member 21 and on the side of the movable pieces 52, 53, 54 to be described later, which is pressed by the base member 21, that is, on the counterclockwise side. The cutout 21b serves as a clamping portion of the bearing plate. In other words, the cutout 21b is formed on the end surface 20a on the circumferential counterclockwise side of the bearing plate 20. The cutout 21b is open to the outer diameter direction and the counterclockwise direction, and is recessed in a rectangular shape in the inner diameter direction and the clockwise direction.

[0057] The elastic member 22 is a flat plate-shaped member extending in the axial direction and is made of rubber. The elastic member 22 is fixed to the inner peripheral surface of the base member 21 using an adhesive. The elastic member 22 is not limited to being made of rubber, and the fixing method is not limited.

[0058] The sliding member 23 is a substantially flat plate-shaped member extending in the axial direction and is made of a low-friction resin. The sliding member 23 is fixed to the inner peripheral surface of the elastic member 22 using an adhesive. The inner peripheral surface 23a of the sliding member 23 is curved along the outer peripheral surface of the rotating shaft 3. In addition, the sliding member 23 is not limited to being made of resin, and can be made of ceramics, etc. as long as it has low friction, and the fixing method is not limited.

[0059] And, if Figure 4 As shown in FIG. 2( b ), both end surfaces 20 a and 20 b of the bearing plate 20 in the circumferential direction extend in the radial direction of the body 10 , that is, in the radial direction.

[0060] Thus, no gap is generated between the bearing plates 20, 20 adjacent to each other in the circumferential direction, and the plurality of bearing plates 20 can be arranged in the circumferential direction in a state where the inner circumferential surfaces 23a of the sliding members 23 are smoothly connected. That is, the inner circumferential surfaces 23a of the plurality of sliding members 23 arranged in the circumferential direction can be arranged in a curved surface shape with substantially the same radius. This is also the case when the bearing plates 30 having substantially the same structure are arranged adjacent to each other in the circumferential direction.

[0061] And, if Figure 4 As shown in FIG. 2( c ), both end surfaces 20 c and 20 d in the axial direction of the bearing plate 20 are formed in a flat surface shape extending substantially parallel to the inner flange portion 12 of the body 10 .

[0062] Thus, a plurality of bearing plates 20 can be arranged in the axial direction in a state where the inner peripheral surfaces 23a of the sliding members 23 are smoothly connected without generating gaps between the bearing plates 20, 20 adjacent to each other in the axial direction. That is, the inner peripheral surfaces 23a of the plurality of sliding members 23 arranged in the axial direction can be arranged in a curved surface shape with substantially the same radius. This is also the case when the bearing plates 30 having substantially the same structure are arranged adjacent to each other in the axial direction.

[0063] like Figure 5 As shown, the bearing plate 30 includes a base member 31, an elastic member 32, a sliding member 33, and two guide pins 34, 34 as convex portions. A notch 31b is formed on an end surface 30a of the bearing plate 30 in the counterclockwise direction in the circumferential direction.

[0064] The bearing plate 30 and the bearing plate 20 have substantially the same structure except for the guide pin 34. Therefore, repeated descriptions are omitted. In the following description, the bearing plate 30 may also be referred to as the guide plate 30.

[0065] The guide pin 34 can be attached to the internal thread holes 31c, 31c which penetrate the base member 31. The internal thread holes 31c, 31c are formed at the circumferential center of the base member 31 and are separated in the axial direction.

[0066] Furthermore, the head of the guide pin 34 is loosely fitted in the guide groove 11b of the main body 10. Furthermore, the head of the guide pin 34 loosely fitted in the guide groove 11b is located at a position closer to the inner diameter side than the bottom of the guide groove 11b. In other words, the guide groove 11b is formed so as to loosely fit the head of the guide pin 34. In addition, a guide pin having a head that can loosely fit in the guide groove 11b can be selected.

[0067] Thus, in a state where the guide pin 34 is loosely fitted in the guide groove 11 b , the outer peripheral surface 31 a of the guide plate 30 can be brought into surface contact with the inner peripheral surface 11 a of the body 10 , similarly to the bearing plate 20 .

[0068] Reference Figure 3 , Figure 6 The bearing plate 40 is a component that is arranged above the main body 10 and is elongated in the axial direction.

[0069] The bearing plate 40 is constituted by a base member 41, an elastic member 42, and a sliding member 43, similarly to the bearing plate 20. A notch 41b is formed on an end surface 40a of the bearing plate 40 on the counterclockwise side in the circumferential direction.

[0070] In addition, the description is omitted for the configuration that is substantially the same as that of the bearing plate 20. Also, in the following description, the bearing plate 40 may also be described as an upper plate 40.

[0071] like Figure 6 As shown in (b), when viewed from the axial direction, both end surfaces 40a and 40b of the upper plate 40 in the circumferential direction are formed in a stepped shape.

[0072] Therefore, if Figure 1 , Figure 3 As shown, a groove 44 extending in the axial direction is formed between the upper plates 40 and 40 adjacent to each other in the circumferential direction. Similarly, a groove 45 extending in the axial direction is formed between the upper plates 40 and the fixing device 50 adjacent to each other in the circumferential direction.

[0073] Thus, when the bearing 1 is mounted on the rotating shaft 3 , fluid can be introduced through the grooves 44 , 45 for lubrication and cooling.

[0074] like Figure 2 As shown, the fixing device 50 is mainly composed of a fixing piece 51 as a first member, moving pieces 52 , 53 , 54 as a second member, and bolts 55 , 56 , 57 .

[0075] The fixing piece 51 is a component that is arranged and fixed in the horizontal direction of the main body 10 and is long in the axial direction. In addition, when viewed from the radial direction, the fixing piece 51 is a right-angled trapezoidal shape whose width increases from the axial front side toward the rear side. In addition, the fixing piece 51 is formed to have a thickness such that when fixed in the main body 10, the inner peripheral surface 51c is arranged at a position closer to the outer diameter side than the inner peripheral surfaces 23a, 33a, 43a of each bearing plate 20, 30, 40 (refer to Figure 3 ).

[0076] like Figure 3 As shown, the fixing piece 51 has an outer peripheral surface 51 a , a fixing surface 51 b , an inner peripheral surface 51 c , and an inclined surface 51 d . The outer peripheral surface 51 a is curved along the inner peripheral surface 11 a of the main body 10 .

[0077] return Figure 2 The fixing surface 51 b is provided on the counterclockwise side of the fixing piece 51 and extends in a planar shape along the axial direction. Furthermore, the fixing surface 51 b is inclined in a manner along the radial direction of the main body 10 .

[0078] like Figure 2 As shown in FIG. 5 , the inclined surface 51d is provided on the clockwise side of the fixing plate 51. Furthermore, the inclined surface 51d is inclined relative to the axial direction when viewed from the radial direction. Specifically, the inclined surface 51d extends in a planar shape in a manner that inclines toward the circumferential clockwise side as it moves from the axial front side toward the rear side. Figure 3 As shown, the inclined surface 51d is inclined in a manner along the radial direction of the main body 10 when viewed from the axial direction (see Figure 3 ).

[0079] The movable pieces 52, 53, 54 are components that are arranged in the horizontal direction on the main body 10 and have an axial dimension that is shorter than the axial dimension of the fixed piece 51. Furthermore, the movable pieces 52, 53, 54 are formed to have substantially the same axial dimension L2. Furthermore, the axial dimension L2 of each of the movable pieces 52, 53, 54 (see Figure 7 to Figure 9 ) is shorter than the axial dimension L1 of each bearing plate 20, 30, 40 (L1>L2).

[0080] And, when observing from radial direction, moving piece 52,53,54 is the right angle trapezoidal shape of width narrowing from axial front side toward rear side.Moving piece 52 is formed as the width narrower than width of moving piece 53,54.Moving piece 53 is formed as the width narrower than width of moving piece 54.In the following description, moving piece 52 is also recorded as rear moving piece 52 sometimes, moving piece 53 is recorded as middle moving piece 53, and moving piece 54 is recorded as front moving piece 54.

[0081] The rear movable piece 52 is formed to have such a thickness that, when fixed in the main body 10 , the inner peripheral surface 52 c is arranged in a curved shape having substantially the same radius as the inner peripheral surface 51 c of the fixed piece 51 . The same is true for the other movable pieces 53 and 54 .

[0082] like Figure 7 As shown in (a) and (c) of FIG. 1 , the rear moving piece 52 has an outer peripheral surface 52 a , a fixed surface 52 b , an inner peripheral surface 52 c , and an inclined surface 52 d . The outer peripheral surface 52 a is curved along the inner peripheral surface 11 a of the main body 10 .

[0083] like Figure 7 As shown in (b), the fixing surface 52b is provided on the counterclockwise side of the rear moving piece 52 and extends in a planar shape in the axial direction. Also, the fixing surface 52b is inclined in a manner along the radial direction of the main body 10.

[0084] The inclined surface 52d is provided on the clockwise side of the rear moving piece 52. Figure 7 As shown in (b), the inclined surface 52d is inclined relative to the axial direction when viewed from the radial direction, and specifically, extends in a planar shape in a manner that inclines toward the circumferential clockwise side as it moves from the axial front side toward the rear side. Figure 7 As shown in (a) and (c) of FIG. 1 , the inclined surface 52d is inclined along the radial direction of the main body 10 when viewed from the axial direction.

[0085] And, if Figure 7 As shown in (a), an internal thread hole 52e is formed at a position closer to the fixing surface 52b than the circumferential center of the rear moving piece 52. The internal thread hole 52e extends from the front end surface of the rear moving piece 52 toward the axial rear side and is substantially parallel to the fixing surface 52b.

[0086] like Figure 8 As shown, the middle moving piece 53 has an outer peripheral surface 53a, a fixed surface 53b, an inner peripheral surface 53c, and an inclined surface 53d similarly to the rear moving piece 52.

[0087] like Figure 8 As shown in (a), the movable sheet 53 is formed with an internal threaded hole 53e and a through groove 53f. The internal threaded hole 53e is formed at the circumferential center, from which the front end face of the movable sheet 53 extends approximately parallel to the fixed surface 53b toward the axial rear side. The through groove 53f is formed at a position closer to the fixed surface 53b side than the circumferential center, from which the front end face of the movable sheet 53 extends approximately parallel to the fixed surface 53b toward the axial rear side. In addition, the through groove 53f is axially penetrated, open in the outer diameter direction, and recessed in the inner diameter direction.

[0088] like Fig. 9As shown, the front moving piece 54 has an outer peripheral surface 54a, a fixed surface 54b, an inner peripheral surface 54c, and an inclined surface 54d similarly to the rear moving piece 52.

[0089] like Fig. 9 As shown in (a), the front moving piece 54 is formed with an internal threaded hole 54e and through grooves 53f, 53g. The internal threaded hole 54e is formed at a position closer to the inclined surface 54d side than the circumferential center, and extends roughly parallel to the fixed surface 54b from the front end face of the front moving piece 54 toward the axial rear side. The through groove 54f is formed at the circumferential center, and extends roughly parallel to the fixed surface 54b from the front end face of the front moving piece 54 toward the axial rear side. The through groove 54g is formed at a position closer to the fixed surface 54b side than the circumferential center, and extends roughly parallel to the fixed surface 54b from the front end face of the front moving piece 54 toward the axial rear side. And, the through grooves 54f, 54g are axially connected, open to the outer diameter direction, and recessed to the inner diameter direction.

[0090] Next, the assembly method of the bearing 1 will be described. Fig.10 The fixing piece 51 located on the radially opposite side is referred to as the opposite side fixing piece 51 ′.

[0091] First, refer to Fig.10 (a) is a method of using a plurality of bolts inserted from a position closer to the outer diameter side than the main body 10 (see Figure 3 ) The fixing piece 51 is fixed to the inner circumferential surface 11a of the main body 10. At this time, the fixing surface 51b of the fixing piece 51 is arranged on the counterclockwise side of the circumference, and the inclined surface 51d is arranged on the clockwise side of the circumference. Similarly, the fixing piece 51' on the opposite side is arranged opposite to the fixing piece 51 fixed first and fixed using a plurality of bolts.

[0092] Reference Fig.10 (b), three guide plates 30 are arranged in a row along the axial direction on the inner periphery of the main body 10. At this time, the orientation of the guide plate 30 is formed with a cutout portion 31b (refer to Figure 5 ) is the rear side. In addition, regarding the other bearing plates 20, 40 described later, the side where each cutout portion 21b, 41b is formed is the rear side.

[0093] In addition, regarding the arrangement of the guide plates 30, in detail, first, the head of the guide pin 34 of the first guide plate 30 is loosely fitted into the guide groove 11b of the main body 10, and the guide plate 30 is moved axially to the rear side and arranged at the rear side. Then, the second guide plate 30 is arranged at the middle position, and the third guide plate 30 is arranged at the front side. Thus, the head of the guide pin 34 is guided by the guide groove 11b, so that the three guide plates 30 can be arranged in a straight line through a simple installation operation.

[0094] Furthermore, the guide plates 30 arranged in the axial rear row abut against the inner flange portion 12 of the body 10. Thus, the three guide plates 30 are prevented from falling off to the rear side of the body 10, and the three guide plates 30 are positioned in the axial direction. This is also the case for the other bearing plates 20, 40.

[0095] Reference Fig.11 (a), a plurality of bearing plates 20 (in this embodiment, 3 rows in the axial direction, 11 rows in the circumferential direction, a total of 33) are arranged on the circumferential clockwise side of the guide plate 30.

[0096] Specifically, first, three bearing plates 20 are arranged in one row in the axial direction at the circumferential center of the body 10, that is, at the lower end of the inner circumference of the body 10. Next, other bearing plates 20 are arranged on both sides of the circumferentially central bearing plate 20.

[0097] At this time, the bearing plates 20 on both sides in the circumferential direction receive a force toward the circumferential center due to their own weight.

[0098] The bearing plate 20 is repeatedly arranged until it contacts the guide plate 30. Then, the bearing plate 20 is arranged circumferentially clockwise on the main body 10, i.e., on the left side of the inner circumference of the main body 10, until it contacts or approaches the fixing surface 51b of the fixing plate 51' on the opposite side.

[0099] At this time, the guide plate 30 moves slightly counterclockwise because the guide pin 34 is loosely fitted in the guide groove 11 b.

[0100] Furthermore, since the circumferential width of the bearing plate 20 is substantially constant in the axial direction, it is easy to insert and arrange the bearing plate 20 in the axial direction.

[0101] Reference Fig.11 (b), multiple bearing plates 20 (in this embodiment, 3 columns in the axial direction and 3 rows in the circumferential direction, a total of 9) are arranged on the counterclockwise side of the guide plate 30. These bearing plates 20 abut against adjacent guide plates 30 or bearing plates 20 due to their own weight.

[0102] In this way, each bearing plate 20 is arranged and each bearing plate 20 is roughly positioned.

[0103] Next, the fastening and fixing of the bearing plates 20 and 30 by the fixing device 50 will be described.

[0104] Reference Fig.12 The bolt 55 is screwed into the internal thread hole 52e of the rear moving piece 52. In addition, the bolt 55 is a bolt whose axial dimension is longer than the axial dimensions of the other bolts 56 and 57.

[0105] Next, the bolt 55 is held and the rear movable piece 52 is inserted into the gap G between the fixed piece 51 and the bearing plate 20 disposed at one end in the counterclockwise direction. The inclined surface 52d of the rear movable piece 52 is in contact with the inclined surface 51d of the fixed piece 51, and the fixed surface 52b of the rear movable piece 52 is in contact with the end surface 20a of the rear side bearing plate 20 in the counterclockwise direction (see FIG. Figure 4 ) face contact.

[0106] In this state, the front end of the bolt 55 protruding from the main body 10 toward the axial front side is struck with a hammer or the like, and pressed in until the axial press-in amount reaches a predetermined amount. This is described in detail below. In addition, in the following description, the description of "the axial press-in amount reaches a predetermined amount" is recorded as "reaching a predetermined amount" unless otherwise specified.

[0107] The inclined surface 52d of the rear moving piece 52 has substantially the same inclination angle as the inclined surface 51d of the fixed piece 51. Therefore, the fixed surface 52b of the rear moving piece 52 and the fixed surface 52b of the fixed piece 51 are substantially parallel to each other by making the inclined surfaces 52d and 51d contact each other.

[0108] The more the rear moving piece 52 is pressed axially rearward, the more it advances circumferentially clockwise under the guidance of the fixing piece 51. That is, the circumferential width between the fixing surface 52b of the rear moving piece 52 and the fixing surface 51b of the fixing piece 51 gradually increases.

[0109] Thus, the fixing device 50 can use the rear movable piece 52 to press all the bearing plates 20 and 30 arranged in one row in the circumferential direction at the axial rear of the main body 10 toward the fixing surface 52b of the fixing piece 51' on the opposite side. In other words, the fixing device 50 and the fixing surface 52b of the fixing piece 51' on the opposite side are used to tighten these bearing plates 20 and 30 in the circumferential direction.

[0110] Then, the rear moving piece 52 is pressed in until all the bearing plates 20 and 30 arranged in one row in the circumferential direction are sufficiently fastened, that is, until a predetermined amount is reached. In this state, the front end of the bolt 55 forms a substantially flush plane with the front end surface of the body 10 .

[0111] If necessary, the front end of the bolt 55 may be cut or ground to adjust the axial length. Also, the amount of screwing of the bolt 55 into the internal threaded hole 52e may be adjusted. This is also the same for the bolts 56 and 57.

[0112] Reference Fig.12 (b), similarly to the rear moving piece 52, the bolt 56 is screwed into the internal thread hole 53e of the middle moving piece 53. The bolt 56 is a bolt whose axial dimension is longer than that of the bolt 57.

[0113] Next, the middle moving piece 53 is inserted into the gap G. At this time, the bolt 55 is arranged in the through groove 53f of the middle moving piece 53. Then, the middle moving piece 53 is pressed in similarly to the rear moving piece 52.

[0114] At this time, since the front end of the bolt 55 is aligned with the front end of the main body 10, it is possible to prevent the front end of the bolt 56 from being hit by a hammer or the like. In addition, the cross-sectional area of ​​the through groove 53f is larger than the cross-sectional area of ​​the bolt 55. Therefore, even if the middle moving piece 53 moves clockwise in the circumferential direction, it is possible to prevent the bolt 55 from contacting the middle moving piece 53.

[0115] Then, the intermediate movable piece 53 is pressed in until all the bearing plates 20 and 30 arranged in one row in the circumferential direction at the axial center of the body 10 are sufficiently fastened, that is, until a predetermined amount is reached.

[0116] Next, similarly to the rear moving piece 52 , the bolt 57 is screwed into the internal thread hole 54 e of the front moving piece 54 .

[0117] Next, the front moving piece 54 is inserted into the gap G. At this time, the bolt 56 is arranged in the through groove 54f of the front moving piece 54, and the bolt 55 is arranged in the through groove 54g of the front moving piece 54. And, similarly to the rear moving piece 52 and the middle moving piece 53, the front moving piece 54 is pressed in.

[0118] At this time, the front ends of the bolts 55 and 56 are aligned with the front end surface of the body 10 , so that it is possible to prevent the front end of the bolt 57 from being obstructed when being struck with a hammer or the like.

[0119] Furthermore, the cross-sectional areas of the through grooves 54f and 54g are larger than the cross-sectional areas of the bolts 55 and 56. Therefore, even if the front moving piece 54 moves clockwise in the circumferential direction, the bolts 55 and 56 can be prevented from contacting the front moving piece 54.

[0120] Then, the front moving piece 54 is pressed in until all the bearing plates 20 and 30 arranged in one row in the circumferential direction in the axial direction front of the body 10 are sufficiently fastened, that is, until a predetermined amount is reached.

[0121] As a result, the lower half of the bearing 1 can be substantially curved and the inner circumferential surfaces 23a and 33a of the bearing plates 20 and 30 can be arranged without gaps. That is, a plurality of bearing plates 20 and 30 divided in the axial direction and in the circumferential direction can be used to form a substantially coplanar and continuous sliding surface. As a result, the rotating shaft 3, which is relatively subjected to a large force downward due to its own weight, can be effectively supported.

[0122] In addition, the installation method of the upper plate 40 is the same as that of the bearing plates 20 and 30, so it is briefly described. First, turn the main body 10 upside down. Then, a plurality of upper plates 40 (a total of 45 in this embodiment) arranged between the fixed plates 51 and 51' are arranged. Between them and the fixed plate 51' on the opposite side, each movable plate 52, 53, 54 is pressed into a specified amount and pressed against the fixed surface 51b of the fixed plate 51. In this way, the upper plate 40 is fixed to the inner periphery of the main body 10.

[0123] Finally, refer to Figure 1 , the cover 60 is brought into surface contact with the front end surface of the main body 10, and is fixed with bolts. Furthermore, the front ends of the bolts 55, 56, 57 are brought into contact with the cover 60. Thus, the bolts 55, 56, 57 are restricted from moving axially forward, i.e., in the direction of falling off. Therefore, the fixing device 50 can maintain the tightening force for each bearing plate 20, 30, 40.

[0124] In addition, after the cover 60 is fixed to the main body 10, the bolts 55, 56, 57 can be rotated through the through hole 60a of the cover 60 to adjust the size of the corresponding internal threaded holes 52e, 53e, 54e so that the front end of each bolt 55, 56, 57 abuts against the cover 60.

[0125] The bearing 1 can be assembled as described above. In addition, the assembly process is not limited to the above process, and can also be appropriately changed. For example, when arranging the bearing plate 20, it can also be arranged while pressing toward the guide plate 30. If this method is used, each bearing plate 20 can be reliably arranged along the axial direction.

[0126] The assembled bearing 1 is externally inserted into the rotating shaft 3 .

[0127] Here, if Figure 1 , Figure 2 As shown, axially inclined surfaces 20e, 30e, 40e are formed on the inner diameter side of the front end surfaces 20c, 30c, 40c of the bearing plates 20, 30, 40 located axially forward, and the axially inclined surfaces 20e, 30e, 40e are inclined toward the inner diameter side as they move from the axial front side toward the rear side.

[0128] Similarly, axially inclined surfaces 20f, 30f, 40f are formed on the inner diameter side of the rear end surfaces 20d, 30d, 40d of the bearing plates 20, 30, 40 located axially rearward. The axially inclined surfaces 20f, 30f, 40f are inclined toward the inner diameter side from the axial rear side toward the front side.

[0129] The bearing 1 can be easily inserted onto the rotating shaft 3 by these axially inclined surfaces 20 e , 30 e , 40 e , 20 f , 30 f , and 40 f .

[0130] Next, a description will be given of a method for replacing the bearing plates 20 and 30 , which are particularly frequently replaced with respect to the bearing 1 . In this description, the bearing 1 is kept in a state of being externally inserted into the rotating shaft 3 .

[0131] First, the cover 60 is removed from the main body 10. Next, the front moving piece 54 is pulled out axially forward by holding the bolt 57 with a jig or the like. Similarly, the middle moving piece 53 and the rear moving piece 52 are pulled out in sequence.

[0132] Therefore, if Fig.13 As shown, a gap G as a working space in which a jig can be inserted is ensured between the fixing piece 51 (omitted in this figure) and the bearing plate 20 disposed at one end on the counterclockwise side of the circumferential direction. Furthermore, each cutout portion 21b faces the gap G. Thus, the jig can be engaged with each cutout portion 21b. Furthermore, when the jig is engaged with the cutout portion 21b, there is no need to adjust the orientation of the bearing plate 20, etc.

[0133] Then, after the jig is engaged with the cutout 21b of the bearing plate 20, the jig is pulled forward to remove the bearing plate 20. Similarly, the guide plate 30 can be removed by operating the jig engaged with the cutout 31b.

[0134] This operation is repeated until all the bearing plates 20, 30 to be replaced are pulled out. Then, new bearing plates 20, 30 are inserted in the same manner as during assembly, and after the corresponding rows are tightened using the movable pieces 52, 53, 54, the cover 60 is mounted on the main body 10, thereby completing the replacement operation of the bearing plates 20, 30.

[0135] In addition, the upper plate 40 can also be removed by operating the jig engaged with the cutout portion 41b, so that it can be replaced in the same process as the bearing plates 20 and 30. Preferably, in order to avoid accidental positional displacement and separation when the bearing 1 is mounted on the rotating shaft 3, the bearing 1 can also be removed from the rotating shaft 3 for replacement.

[0136] As described above, in the bearing 1 of the present embodiment, a pair of fixing devices 50 are arranged between the bearing plates 20 and 30 arranged in one row in the circumferential direction and the upper plate 40 .

[0137] By relatively moving the movable pieces 52, 53, 54 of the fixing device 50 in the axial rearward direction relative to the fixing piece 51, the fixing device 50 can adjust the fastening force for the bearing plates 20, 30. In addition, the machining tolerance of the bearing plates 20, 30 can also be absorbed. Therefore, the bearing plates 20, 30 can be easily arranged on the inner periphery of the main body 10.

[0138] In addition, the description of the upper plate 40 is omitted because it is the same as the description of the bearing plates 20 and 30. In the following description, unless otherwise specified, the duplicate description is omitted.

[0139] Furthermore, the inclination angles of the inclined surfaces 52d, 53d, 54d of the movable pieces 52, 53, 54 are the same as the inclination angle of the inclined surface 51d of the fixed piece 51. Thus, the movable pieces 52, 53, 54 move relative to the fixed piece 51 in the axial direction while the inclined surfaces 52d, 53d, 54d of the movable pieces 52, 53, 54 and the inclined surface 51d of the fixed piece 51 are in surface contact with each other.

[0140] At this time, the fixed surfaces 52b, 53b, 54b of the movable pieces 52, 53, 54 move while being substantially parallel to the fixed surface 51b of the fixed piece 51, and press the adjacent bearing plates 20, 30 in the circumferential direction. In addition, the size of the fixed surfaces 52b, 53b, 54b of the movable pieces 52, 53, 54 that advance in the circumferential direction is proportional to the size of the movable pieces 52, 53, 54 that move in the axial direction.

[0141] Thus, the fixing device 50 can stably adjust the fastening force to the bearing plates 20 and 30 .

[0142] Furthermore, each of the fixing surfaces 52b, 53b, and 54b is in surface contact with the end surface 20a of the adjacent bearing plate 20. Thus, the bearing plates 20 and 30 arranged in one row in the axial direction can be pressed substantially uniformly in the circumferential direction.

[0143] Furthermore, since the fixing piece 51 of the fixing device 50 is fixed to the main body 10 , the movable pieces 52 , 53 , 54 can be easily moved relative to the fixing piece 51 in the axial direction.

[0144] Furthermore, the axial length of the moving pieces 52, 53, 54 is shorter than the axial length of the bearing plates 20, 30. Therefore, the moving pieces 52, 53, 54 are less likely to protrude axially outward from the bearing plates 20, 30.

[0145] Furthermore, the movable pieces 52 , 53 , 54 are unlikely to interfere with each other when being pressed into the gap G. Thus, the fastening force can be reliably applied to the bearing plates 20 , 30 .

[0146] Furthermore, the movable pieces 52, 53, and 54 can be moved in the axial direction individually. Thus, the fixing device 50 can adjust the fastening force for each movable piece 52, 53, and 54. For example, when a plurality of bearing plates having an axial dimension substantially the same as that of the fixing piece 51 are arranged in one row in the circumferential direction, the fixing device 50 can adjust the fastening force for these bearing plates individually at multiple locations in the axial direction. Therefore, the bearing plates can be fastened with high precision.

[0147] The movable pieces 52, 53, 54 are arranged one each in the corresponding row of the plurality of bearing plates 20, 30 arranged in three rows in the circumferential direction. Therefore, the fixing device 50 can adjust the fastening force for each row of the bearing plates 20, 30 with high accuracy.

[0148] Furthermore, the fixing device 50 can reduce the circumferential width by relatively moving the movable pieces 52, 53, 54 toward the axial front side relative to the fixing piece 51. Thus, the fixing device 50 can weaken the fastening force on the bearing plates 20, 30 arranged in one row in the circumferential direction and release the fastening thereof. Therefore, the bearing 1 can easily replace the bearing plates 20, 30.

[0149] Furthermore, the fixing device 50 can be pulled out individually in the order of the front moving piece 54, the middle moving piece 53, and the rear moving piece 52. Thus, for example, when only any bearing plate of all the bearing plates 20, 30 arranged in one row in the circumferential direction in the axial front is replaced, the other moving plates 52, 53 do not need to be pulled out. That is, the efficiency of the replacement operation can be improved.

[0150] Furthermore, when the bearing plates 20 and 30 are arranged in one row in the circumferential direction, the guide plate 30 restricts the counterclockwise movement of the plurality of bearing plates 20 arranged in the circumferential clockwise direction relative to the guide plate 30. Thus, the gap G for pressing the movable plates 52, 53, and 54 can be reliably ensured. Therefore, the movable plates 52, 53, and 54 can be easily pressed in.

[0151] In contrast, for example, when the guide plate 30 is not provided, the plurality of bearing plates 20 arranged in one row in the circumferential direction can move along the inner peripheral surface 11a of the main body 10. As a result, the plurality of bearing plates 20 move counterclockwise in the circumferential direction, and the width of the gap G before the moving plates 52, 53, 54 are pressed in becomes narrower, thereby hindering the pressing in.

[0152] Furthermore, the structure in which the respective front ends of the bolts 55 , 56 , 57 are prevented from falling off by abutting against the cover 60 has been described, but the present invention is not limited thereto, and the structure for preventing falling off may be modified as appropriate.

[0153] For example, you can also Fig.14As shown, the bolts 55 and 56 are prevented from falling out by the cover 160, the lock nut 58, and the clamp 59. In addition, in this description, it is assumed that the bearing plates are arranged in two rows in the axial direction.

[0154] Specifically, the cover 160 is formed with a through hole 160a and a rectangular recess 160b. The through hole 160a penetrates the cover 160 in the thickness direction, ie, in the axial direction. The rectangular recess 160b is recessed in a rectangular shape from the outer circumference of the cover 160 toward the inner diameter side and is open toward the outer diameter side.

[0155] The clamp 59 is formed in a U-shape and has a nut side engaging portion 59a, a cover side engaging portion 59b and a connecting portion 59c. The nut side engaging portion 59a is formed in a substantially U-shape when viewed in the axial direction so that the bolts 55 and 56 can be externally fitted. The nut side engaging portion 59a is curved toward the front side as it moves toward the inner diameter side end. The cover side engaging portion 59b is formed in a rectangular shape when viewed in the axial direction. The connecting portion 59c connects the nut side engaging portion 59a and the cover side engaging portion 59b.

[0156] Next, the prevention of the bolts 55 and 56 from being knocked a predetermined amount by a hammer or the like will be described. First, the bolts 55 and 56 are inserted through the corresponding through holes 160a and the cover 160 is fixed to the body 10. Next, the lock nut 58 is fixed to the corresponding bolts 55 and 56 in a state where the nut 58a on the rear side abuts against the cover 160. Then, the cover-side engaging portion 59b of the clamp 59 is inserted into the rectangular recess 160b of the cover 160, whereby the nut-side engaging portion 59a is brought into a state of abutting against the lock nut 58.

[0157] In this way, the movement of the lock nut 58 in the falling-off direction is restricted by the clamp 59 , so that the bolts 55 and 56 can be prevented from falling off.

[0158] Furthermore, instead of preventing the nut 58 from falling off by using the jig 59, the nut 58a disposed on the axial rear side of the lock nut 58 may be fixed to the cover 160 by welding. Furthermore, an extension portion extending outward may be formed on the nut 58a, and the extension portion may be fixed to the cover 160 by bolts or the like.

[0159] Example 2

[0160] Next, refer to Fig.15 The bearing of Example 2 will be described. In addition, the repeated description of the same structure as that of the above-mentioned Example 1 will be omitted.

[0161] In the bearing 101 of the second embodiment, the fixing device 50 and the connecting piece 70 are disposed opposite to each other on the inner periphery of the main body 10 .

[0162] The connection piece 70 is a substantially flat plate-shaped member extending in the axial direction and is made of metal. The outer peripheral surface 70a of the connection piece 70 is bent along the inner peripheral surface 11a of the main body 10. The connection piece 70 is not limited to being made of metal, but may also be made of resin.

[0163] The connecting piece 70 has two circumferential end surfaces, 70 b and 70 d, extending in the axial direction. The fixing surfaces 70 b and 70 d are inclined toward the circumferential center from the outer circumferential surface 70 a to the inner circumferential surface 70 c of the connecting piece 70 along the radial direction of the body 10 .

[0164] When assembling the bearing 101, the fixing piece 51 and the connecting piece 70 of the fixing device 50 are fixed to the inner peripheral surface 11a of the main body 10, and then the bearing plates 20 and 30 are arranged in the same manner as in the above-mentioned embodiment 1, and the movable pieces 52, 53, and 54 are pressed in. Thus, the fixing device 50 and the connecting piece 70 can be used to fasten the corresponding plurality of bearing plates 20 and 30 arranged in one row in the circumferential direction.

[0165] Furthermore, in the present embodiment, the upper plate 40 is fixed to the main body 10 using bolts (not shown).

[0166] As described above, the bearing may be provided with only one fixing device as long as a fixing surface is provided that can support the plurality of bearing plates 20 and 30 pressed in the circumferential direction by the fixing device 50. For example, the member having the fixing surface may be a guide plate.

[0167] Example 3

[0168] Next, refer to Fig.16 A bearing according to Example 3 will be described. In addition, duplicate descriptions of the same structures as those of Example 1 will be omitted.

[0169] In the bearing of the third embodiment, a fixing device 150 and a connecting piece 70 are disposed opposite to each other on the inner periphery of the main body 10 (see Fig.15 ).

[0170] The fixing device 150 is composed of a fixing piece 151 , movable pieces 52 , 53 , 54 , bolts 55 , 56 , 57 , movable pieces 152 , 153 , 154 on the opposite side, and bolts 155 , 156 , 157 on the opposite side.

[0171] The fixing piece 151 has an inclined surface 51d and an inclined surface 151d. The inclined surface 151d is provided on the counterclockwise side of the fixing piece 51 in the circumferential direction when viewed from the axial front side.

[0172] The rear moving piece 152 on the opposite side is a shape obtained by mirror-inverting the rear moving piece 52. The moving pieces 153 and 154 on the other opposite sides are also shapes obtained by mirror-inverting the other moving pieces 53 and 54.

[0173] Thus, similar to the above-mentioned bearing assembly method, by relatively moving the movable pieces 52 , 53 , 54 axially rearward with respect to the fixed piece 151 , the plurality of bearing plates 20 , 30 arranged between the fixed surface 70 b of the connecting piece 70 can be fastened.

[0174] Furthermore, by relatively moving the opposite movable pieces 152 , 153 , and 154 axially rearward with respect to the fixed piece 151 , the plurality of upper plate pieces 40 disposed between the fixed surface 70 d of the connection piece 70 can be fastened.

[0175] In this way, a fixing device may also be a structure in which corresponding movable pieces are respectively provided on both sides of the fixing piece in the circumferential direction. Similarly, a structure in which a plurality of movable pieces are provided for the fixing piece may also be provided. For example, the fixing piece 51 and the fixing piece on the opposite side of the fixing piece 51 which is a mirror image of the fixing piece 51 may be provided with inclined surfaces on both sides of the circumferential direction similarly to the fixing piece 151.

[0176] As mentioned above, although the embodiment of the present invention is described with reference to the drawings, the specific structure is not limited to these embodiments, and the change and addition within the range which does not deviate from the summary of the present invention are also included in the present invention.

[0177] For example, in the above-mentioned embodiments 1, 2, and 3, the case where the shaft supported by the bearing is a rotating shaft is described, but the present invention is not limited to this, and it may be a fixed shaft.

[0178] Furthermore, in the aforementioned embodiments 1, 2, and 3, the present invention has been described in which one axial side is the axial rear side and the other axial side is the axial front side, but is not limited thereto. One axial side may be the axial left side or the axial upper side, and may be changed appropriately.

[0179] Furthermore, in the above-mentioned embodiments 1, 2, and 3, the structure in which the fixing device has a fixing piece as the first component and a moving piece as the second component is described, but it is not limited to this, and the first component and the second component may both be movable in the axial direction. For example, the main body may be made cylindrical, and the circumferential width may be expanded by pressing the first component in from one axial side and the second component in from the other axial side.

[0180] Furthermore, in the aforementioned first embodiment, the two fixing devices are arranged opposite to each other in the radial direction, in other words, at the 3 o'clock and 9 o'clock positions of the clock, but the present invention is not limited thereto and may be arranged at the 4 o'clock and 8 o'clock positions, and the arrangement position may be changed appropriately. In addition, for example, three or more fixing devices may be arranged at the 4 o'clock, 8 o'clock and 12 o'clock positions.

[0181] Furthermore, in the above-mentioned embodiments 1, 2, and 3, the structure in which the fixing device has corresponding moving pieces for each column is described, but the present invention is not limited thereto, and a plurality of moving pieces may be provided for one column, and the structure may be changed appropriately.

[0182] Furthermore, in the above-mentioned embodiments 1, 2, and 3, the structure in which the fixing device has a corresponding moving piece for each column is described, but the present invention is not limited thereto, and one moving piece may be provided for a plurality of columns.

[0183] Furthermore, in the above-mentioned embodiments 1, 2, and 3, the structures in which the inclined surfaces of the movable piece and the fixed piece of the fixing device have the same inclination angle are described, but the invention is not limited thereto, and the respective inclination angles may be different.

[0184] Furthermore, in the above-mentioned embodiments 1, 2, and 3, the inclined surface of the movable sheet and the inclined surface of the fixed sheet are described as being planar, but the present invention is not limited thereto, and the inclined surface may be curved, or one inclined surface may be formed into a wave shape or a step shape, and the configuration may be appropriately changed. The same is true for the fixed surface.

[0185] Furthermore, in the above-mentioned embodiments 1, 2, and 3, the structure in which the fixed surface of the moving piece and the adjacent bearing plate are in surface contact is described, but it is not limited thereto, and a point contact structure or a line contact structure may also be used. If such a structure is used, it is preferred that the number and position of the bearing plate configured to prevent tilting and rotation caused by pressing can be adjusted.

[0186] Furthermore, in the above-mentioned embodiments 1, 2, and 3, a structure in which the bolts attached to the movable piece are struck with a hammer or the like to press the movable piece is described, but the present invention is not limited thereto and the method can be appropriately changed.

[0187] Furthermore, in the above-mentioned embodiments 1, 2, and 3, the structure in which each bearing plate has a base member, an elastic member, and a sliding member is described, but it is not limited thereto, and other structures can be appropriately changed as long as at least a sliding member is provided. In addition, the sliding member can have elastic force and rigidity.

[0188] Furthermore, in the above-mentioned embodiments 1, 2, and 3, the structure in which the bearing plates are arranged in three rows in the axial direction is described, but the present invention is not limited thereto, and the bearing plates may be arranged in one row in the axial direction or in a plurality of rows other than three rows.

[0189] Furthermore, in the above-mentioned embodiments 1, 2, and 3, the bearing has a structure including a bearing plate, a guide plate, and an upper bearing plate, but the present invention is not limited thereto, and the types thereof can be appropriately changed.

[0190] Furthermore, in the above-mentioned embodiments 1, 2, and 3, the structure in which the axial dimensions of the bearing plate, the guide plate, and the upper bearing plate are substantially the same is described, but the present invention is not limited thereto, and the axial dimensions may be different. Furthermore, even the same type of bearing plates may have different axial dimensions. The same applies to the radial dimensions and the circumferential dimensions.

[0191] Furthermore, in the above-mentioned embodiments 1, 2, and 3, the structure in which the bearing plate is formed with one cutout as the engaging portion is described, but it is not limited thereto, and a plurality of cutouts may be formed. If such a structure is used, the directions in which the engaging portion can be approached when the bearing plate is disassembled can be increased, thereby improving the efficiency of the operation.

[0192] Furthermore, in the above-mentioned embodiments 1, 2, and 3, the structure in which the main body forms a recess and the guide plate forms a projection is described, but the present invention is not limited thereto. Alternatively, the main body may form a projection and the guide plate may form a recess.

[0193] Furthermore, in the above-mentioned embodiments 1, 2, and 3, the guide groove is formed below the base and at the lower right when viewed from the axial front side, but it is not limited to this and can be formed at any position in the circumferential direction, and a plurality of guide grooves can also be formed.

[0194] Description of symbols

[0195] 1: bearing; 3: rotating shaft; 10: main body; 11b: guide groove (recess); 20, 30, 40: bearing plate; 21b, 31b, 41b: cutout (engaging portion); 34: guide pin (convex portion); 50: fixing device; 51: fixing plate (first component); 51d: inclined surface; 52, 53, 54: moving plate (second component); 52d, 53d, 54d: inclined surface; 70: connecting plate; 101: bearing; 150: fixing device; 151: fixing plate (first component); 151d: inclined surface; 152, 153, 154: moving plate (second component); G: gap; L1: axial dimension of the bearing plate; L2: axial dimension of the moving plate.

Claims

1. A bearing comprising: a cylindrical body; and A plurality of bearing plates are arranged circumferentially on the inner periphery of the main body. in, The bearing further comprises a fixing device, which is arranged on the inner periphery of the main body. The fixing device has: a first member having an inclined surface; and The second member is movable along the inclined surface of the first member to press the bearing plate.

2. The bearing according to claim 1, wherein: The second component has: an inclined surface opposed to the inclined surface of the first member; and a surface provided on the circumferentially opposite side of the inclined surface, the surface being parallel to a surface of the bearing plate adjacent to the second component on the second component side, The inclined surface of the second member has the same inclination angle as the inclined surface of the first member.

3. The bearing according to claim 1, wherein: The first member is fixed to the main body.

4. The bearing according to claim 1, wherein: The axial length of the second member is shorter than the axial length of the bearing plate.

5. The bearing according to claim 1, wherein: A plurality of the second members are arranged in the axial direction and are independently movable in the axial direction.

6. The bearing according to claim 5, wherein: The bearing plates are arranged in multiple rows in the axial direction. At least one of the second members is provided for each row of the bearing plates.

7. The bearing according to any one of claims 1 to 6, wherein: The fixing device can reduce the circumferential width by relatively moving the second member to the other axial side with respect to the first member.

Images