Thrust bearing disassembly method, thrust bearing, and lifting device

Abstract

To reduce a burden imposed on a worker at the removal of a thrust pad of a thrust bearing.SOLUTION: A decomposition method of a thrust bearing 110 includes a step for expanding an interval between a thrust runner 111 and a thrust pad 112 by moving a shaft 11 upward by a crane 200 (moving means), and a step for attaching a hanging tool 300 to an attachment part of the thrust pad 112. The decomposition method of the thrust bearing 110 also includes a step for separating the thrust pad 112 from a pad support part 113 by moving the thrust pad 112 upward by the crane 200 which supports the thrust pad 112 via the hanging tool 300, and a step for moving the thrust pad 112 to the outside of the shaft 11 in a radial direction by the crane 200.SELECTED DRAWING: Figure 10

Description

[Technical Field]

[0001] An embodiment of the present invention relates to a method for disassembling a thrust bearing, a thrust bearing, and a lifting tool. [Background technology]

[0002] Conventionally, a vertical rotating electric machine has been known that includes a rotor including a shaft extending in the vertical direction, and a thrust bearing that has a thrust runner and a plurality of thrust pads, supports the upper end of the shaft, and bears the weight of the rotor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 4-136516 Summary of the Invention [Problem to be solved by the invention]

[0004] In this type of vertical rotating electric machine, when the thrust bearing is disassembled for inspection of the thrust pads, the thrust pads have to be removed manually by an operator, which places a heavy burden on the operator.

[0005] One example of a problem to be solved by the present invention is to reduce the burden on an operator when removing a thrust pad of a thrust bearing. [Means for solving the problem]

[0006] A method for disassembling a thrust bearing according to an embodiment of the present invention is a method for disassembling a thrust bearing including: a plurality of thrust pads arranged at intervals around a circumferential direction of a shaft extending in a vertical direction on the radial outside of the shaft; a pad support portion located vertically below the thrust pads and supporting the plurality of thrust pads; and a thrust runner surrounding the shaft and fixed to the shaft at a position vertically above the thrust pads, the method including: moving the shaft upward using a movement device to widen the gap between the thrust runner and the thrust pads; attaching a lifting tool to a mounting portion of the thrust pad; moving the thrust pads upward using a crane that supports the thrust pads via the lifting tool to separate the thrust pads from the pad support portion; and moving the thrust pads radially outward of the shaft using the crane. The mounting portion is provided on the radially outer side surface of the thrust pad. . a pad support portion located vertically below the thrust pads and supporting the plurality of thrust pads; and a thrust runner fixed to the shaft and surrounding the shaft at a position vertically above the thrust pads, the method comprising: moving the shaft upward using a moving device to widen the gap between the thrust runner and the thrust pads; attaching a lifting device to a mounting portion of the thrust pad; moving the thrust pads upward using a crane that supports the thrust pads via the lifting device to move the thrust pads away from the pad support portion; and moving the thrust pads radially outward from the shaft using the crane; the mounting portion includes a female thread portion, and the lifting device is attached to the mounting portion by a male thread member that engages with the female thread portion.

[0007] A thrust bearing according to an embodiment of the present invention comprises a plurality of thrust pads arranged at intervals in the circumferential direction of a shaft extending in a vertical direction on the radially outer side of the shaft, a pad support portion positioned below the thrust pads in the vertical direction and supporting the plurality of thrust pads, and a thrust runner surrounding the shaft and fixed to the shaft at a position above the thrust pads in the vertical direction, wherein the thrust pads have attachment portions to which a lifting tool for being suspended by a crane can be attached. The mounting portion is provided on the radially outer side surface of the thrust pad. . A thrust bearing according to an embodiment of the present invention comprises a plurality of thrust pads arranged at intervals around the circumferential direction of a shaft extending in a vertical direction, radially outward of the shaft, a pad support portion located vertically below the thrust pads and supporting the plurality of thrust pads, and a thrust runner surrounding the shaft and fixed to the shaft at a position vertically above the thrust pads, wherein the thrust pads have mounting portions to which a lifting device to be suspended by a crane can be attached, the mounting portions including female thread portions, and the lifting device is attached to the mounting portions by male thread members that engage with the female thread portions.

[0008] The lifting tool according to the embodiment of the present invention is a lifting tool to be hung by a crane, and has a thrust shaft To the receiver It has a mounting part on the side of the sling that can be attached. The thrust bearing comprises a plurality of thrust pads arranged at intervals in the circumferential direction of a shaft extending in a vertical direction on the radially outer side of the shaft, a pad support portion positioned below the thrust pads in the vertical direction and supporting the plurality of thrust pads, and a thrust runner surrounding the shaft and fixed to the shaft at a position above the thrust pads in the vertical direction, the thrust pads having mounting portions provided on the radially outer side surfaces of the thrust pads, and the hoisting tool side mounting portion of the hoisting tool being mountable to the mounting portions. . A hoisting device according to an embodiment of the present invention is a hoisting device to be suspended from a crane, and has a hoisting device-side mounting portion that can be attached to a thrust bearing, the thrust bearing comprising: a plurality of thrust pads arranged radially outside a shaft extending in a vertical direction and spaced apart circumferentially of the shaft; a pad support portion that is positioned vertically below the thrust pads and supports the plurality of thrust pads; and a thrust runner that surrounds the shaft and is fixed to the shaft at a position vertically above the thrust pads, the thrust pads having mounting portions that include female thread portions, and the hoisting device-side mounting portion of the hoisting device is attached to the mounting portion by a male screw member that engages with the female thread portion. [Effects of the Invention]

[0009] According to the embodiment of the present invention, for example, the burden on an operator when removing a thrust pad of a thrust bearing can be reduced. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a cross-sectional view showing the configuration of a vertical rotating electric machine according to an embodiment. [Figure 2] FIG. 2 is a perspective view showing a bearing structure of a vertical rotating electric machine according to the embodiment. [Figure 3] FIG. 3 is an exploded perspective view showing a part of a thrust bearing of the vertical rotating electric machine according to the embodiment. [Figure 4] FIG. 4 is a plan view showing a thrust pad in a thrust bearing of a vertical rotating electric machine according to an embodiment. [Figure 5] FIG. 5 is a side view showing a thrust pad in a thrust bearing of a vertical rotating electric machine according to an embodiment. [Figure 6] FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. [Figure 7] FIG. 7 is a plan view showing a thrust pad in a thrust bearing of a vertical rotating electric machine according to an embodiment. [Figure 8] FIG. 8 is a side view showing a thrust pad in a thrust bearing of a vertical rotating electric machine according to an embodiment. [Figure 9] FIG. 9 is a diagram showing a method of disassembling the thrust bearing according to the embodiment. [Figure 10] FIG. 10 is a diagram showing a method of disassembling the thrust bearing according to the embodiment. [Figure 11] FIG. 11 is a diagram showing a method of disassembling the thrust bearing according to the embodiment. [Figure 12] FIG. 12 is a front view showing the suspender according to the embodiment. [Figure 13] FIG. 13 is a side view showing the suspender according to the embodiment. [Figure 14] FIG. 14 is a bottom view showing the suspender according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] An embodiment will be described below. Note that in this specification, components according to the embodiment and descriptions of the components may be described using multiple expressions. The components and their descriptions are merely examples and are not limited by the expressions in this specification. The components may also be identified by names different from those in this specification. Furthermore, the components may also be described using expressions different from those in this specification.

[0012] Fig. 1 is a cross-sectional view showing the configuration of a vertical rotating electric machine 1 according to an embodiment. The vertical rotating electric machine 1 has a rotor 10, a stator, a bearing structure 100, a lower bearing, and a frame 150. Arrow D1 shown in Fig. 1 etc. indicates the upward direction in the vertical direction. Hereinafter, the upward and downward directions in the vertical direction may be simply referred to as the upward and downward directions.

[0013] The rotor 10 has a shaft 11 extending in the vertical direction and a rotor core that is provided radially outside the shaft 11 and rotates integrally with the shaft 11. The stator is provided radially outside the rotor core and has a stator core and stator coils that are laid in slots (not shown) formed in the stator core.

[0014] The frame 150 houses a portion of the shaft 11, the rotor core, and the stator. The rotor 10 is rotatably supported by a bearing structure 100 provided on the upper part of the frame 150 and a lower bearing portion provided on the lower part of the frame 150.

[0015] The bearing structure 100 includes a thrust bearing 110 that supports the weight of the rotor, a journal bearing 120, and an oil tank 130 that stores lubricating oil for lubricating and cooling the thrust bearing 110 and the journal bearing 120. The bearing structure 100 also includes a ring key 160, a splash prevention cover 161, a cooling device 162, and temperature sensors 163 and 164.

[0016] The oil tank 130 has a base 118 and a cover 125. The base 118 is cylindrical with a bottom and is open upward. The base 118 is provided radially outward of the shaft 11 with a gap therebetween. The cover 125 is attached to the upper end of the base 118.

[0017] Lubricating oil is stored in the oil tank 130. The thrust bearing 110 and the journal bearing 120 are each immersed in the oil tank 130 except for a portion thereof.

[0018] Fig. 2 is a perspective view showing a bearing structure 100 of the vertical rotating electric machine 1 according to the embodiment. Fig. 3 is an exploded perspective view showing a part of a thrust bearing 110 of the vertical rotating electric machine according to the embodiment.

[0019] 1 to 3, the thrust bearing 110 has a thrust runner 111, a plurality of thrust pads 112, a pad support portion 113, and a base plate 114. In other words, the thrust bearing 110 is a pad-type (tilting pad-type) thrust bearing.

[0020] The thrust runner 111 is attached to the outer surface of the shaft 11. The thrust runner 111 has a protruding portion 111m, a runner cylindrical portion 111n, and a lower end portion 111p. The protruding portion 111m is a portion fixed to the shaft 11, and protrudes radially from the radially outer side of the base 118 in a plan view from the portion fixed to the shaft 11 at a position higher than the level of the upper end of the base 118. The thrust runner 111 is also called a thrust collar.

[0021] The runner cylindrical portion 111n is a portion that extends cylindrically downward from the lower side of the protruding portion 111m, and is provided radially outward of the base 118. The lower end portion 111p is a portion that connects to the lower side of the runner cylindrical portion 111n, and has a flat lower surface. The lower end portion 111p faces the upper surface 112a of the thrust pad 112 of the thrust bearing 110, and is mounted on the upper surface 112a of the thrust pad 112.

[0022] The base plate 114 is formed in the shape of an annular disk that surrounds the shaft 11. The base plate 114 is fixed to the bottom of the base 118.

[0023] The pad support portion 113 is attached on a base plate 114. The pad support portion 113 has a plurality of support members 113a. The plurality of support members 113a are arranged at intervals in the circumferential direction of the shaft 11. The support members 113a are, for example, bolts, and their height relative to the base plate 114 is adjustable. However, the base plate 114 and the pad support portion 113 are not limited to these shapes.

[0024] The multiple thrust pads 112 are mounted annularly on the pad support portion 113 at circumferential intervals. In other words, the pad support portion 113 is positioned vertically below the thrust pads 112 and supports the multiple thrust pads 112. The multiple thrust pads 112 are arranged radially outward of the shaft 11 at circumferential intervals. One thrust pad 112 is supported by one support member 113a. The multiple thrust pads 112 include a thrust pad 112A that is not provided with a temperature sensor 164 and a thrust pad 112B that is provided with a temperature sensor 164. The weight of the thrust pads 112 is, for example, 35 kg, but is not limited to this.

[0025] Fig. 4 is a plan view showing thrust pads 112, 112A in the thrust bearing 110 of the vertical rotating electric machine 1 according to the embodiment. Fig. 5 is a side view showing thrust pads 112, 112A in the thrust bearing 110 of the vertical rotating electric machine 1 according to the embodiment. Fig. 6 is a cross-sectional view taken along line VI-VI in Fig. 4. Fig. 7 is a plan view showing thrust pads 112, 112B in the thrust bearing 110 of the vertical rotating electric machine according to the embodiment. Fig. 8 is a side view showing thrust pads 112, 112B in the thrust bearing 110 of the vertical rotating electric machine according to the embodiment.

[0026] 4 to 8, each thrust pad 112 has an upper surface 112a, a lower surface 112b, a side surface 112c, a side surface 112d, and two end surfaces 112e. The side surface 112c is the radially outer surface of the thrust pad 112. The side surface 112d is the radially inner surface of the thrust pad 112. The side surfaces 112c, 112d are formed in an arc shape (curved shape) around the shaft 11. The two end surfaces 112e are circumferential end surfaces.

[0027] A plurality of (for example, two) cylindrical female threaded portions 112f are provided on the side surface 112d. An opening 112g is provided inside the female threaded portion 112f. The two female threaded portions 112f are provided at a distance from each other in the circumferential direction. The side surface 112d and the two female threaded portions 112f form an attachment portion 112m. A hoisting tool 300 (FIG. 10) that is suspended by a crane 200 (FIG. 10), which will be described later, can be attached to the attachment portion 112m.

[0028] As shown in FIGS. 7 and 8, the thrust pad 111B is provided with a hole 112i into which the temperature sensor 163 is inserted.

[0029] The upper surface 112a of each thrust pad 112 is flat and is constrained to prevent movement in either the radial or circumferential direction. A recess 112h is formed in the approximate center of the lower surface 112b of each thrust pad 112. The upper end of the support member 113a of the pad support portion 113 is inserted into the recess 112h. When the lower end 111p of the thrust runner 111 moves circumferentially on the thrust pad 112, the thrust pad 112 is formed to tilt circumferentially relative to the horizontal, and lubricating oil is guided into the gap between the lower surface of the lower end 111p of the thrust runner 111 and the upper surface 112a of the thrust pad 112. In other words, an oil film is formed between the lower surface of the lower end 111p of the thrust runner 111 and the upper surface 112a of the thrust pad 112.

[0030] As a result, when thrust runner 111 is mounted on thrust pad 112 and rotates with shaft 11, upper surface 112a of thrust pad 112 does not come into close contact with the underside of lower end 111p of thrust runner 111, and becomes tilted relative to the horizontal. As a result, lubricating oil is guided into the space between upper surface 112a of thrust pad 112 and the underside of lower end 111p of thrust runner 111.

[0031] Between the upper surface 112a of the thrust pad 112 and the lower surface of the lower end portion 111p of the thrust runner 111, the centrifugal force caused by the rotation of the thrust runner 111 causes the lubricating oil to flow from the radially inner side to the radially outer side.

[0032] A lower end 111p of the thrust runner 111 is supported by a journal bearing 120. The journal bearing 120 limits radial displacement of the thrust runner 111 and therefore the shaft 11. A temperature sensor 163 is attached to the journal bearing 120.

[0033] The splash prevention cover 161 is housed in the oil tank 130 and surrounds the protruding portion 111m from the radially outer side. The splash prevention cover 161 prevents oil from splashing upward.

[0034] The cooling device 162 is housed in the oil tank 130 and is immersed in the oil. The cooling device 162 is, for example, an oil cooler, and cools the oil.

[0035] Next, we will explain how to disassemble the thrust bearing 110. Figures 9 to 11 are diagrams showing how to disassemble the thrust bearing 110 according to this embodiment.

[0036] As shown in Figure 9, first, the worker removes the journal bearing 120, cover 125, anti-scattering cover 161, and cooling device 162. The worker can remove these items using crane 200 (Figure 10). The worker also removes temperature sensors 163 and 164 from thrust pad 112B and journal bearing 120.

[0037] 10, the worker uses the crane 200 to move the shaft 11 (rotor 10) upward to widen the gap between the thrust runner 111 and the thrust pad 112. At this time, the crane 200 lifts the shaft 11 with the cable 201.

[0038] 10, the worker attaches the hoisting tool 300 to the cable 202 of the crane 200. The worker also attaches the hoisting tool 300 to the mounting portion 112m of the thrust pad 112. As a result, the crane 200 supports the thrust pad 112 via the hoisting tool 300. Details of the hoisting tool 300 will be described later. The worker then operates the crane 200, and moves the thrust pad 112 upward with the crane 200 to separate the thrust pad 112 from the pad support portion 113. In detail, the crane 200 removes the thrust pad 112 from the support member 113a.

[0039] Next, the worker operates the crane 200 and moves the thrust pad 112 radially outward from the shaft 11 (toward the direction of arrow D2 in FIGS. 10 and 11), and then moves the thrust pad 112 upward (in the direction of arrow D1) (FIG. 11). In other words, the thrust pad 112 is removed from between the support member 113a and the thrust runner 111. Next, the worker operates the crane 200 and moves the thrust pad 112 to a predetermined position outside the base 118 of the oil tank 130. The worker performs the above removal work for each thrust pad 112. Note that during the above work, the worker may hold the thrust pad 112 to prevent the thrust pad 112 suspended by the crane 200 from shaking.

[0040] Next, the suspender 300 will be described in detail. Fig. 12 is a front view showing the suspender 300 according to the embodiment. Fig. 13 is a side view showing the suspender 300 according to the embodiment. Fig. 14 is a bottom view showing the suspender 300 according to the embodiment.

[0041] 12 to 14, the suspender 300 has a rod-shaped portion 301, a lower attachment portion 302, and an upper attachment portion 303. The rod-shaped portion 301 extends in the vertical direction.

[0042] Lower mounting portion 302 is fixed to the lower end of rod-shaped portion 301. Mounting portion 112m of thrust pad 112 can be attached to lower mounting portion 302. Lower mounting portion 302 has side support portion 302a, lower surface support portion 302b, and reinforcing portion 302c. Lower mounting portion 302 is an example of a hoist-side mounting portion.

[0043] The side support portion 302a is capable of supporting the side surface 112c of the thrust pad 112. The side support portion 302a has a support surface 302aa on which the side surface 112c of the thrust pad 112 is placed. The support surface 302aa (side support portion 302a) is curved along the side surface 112c of the thrust pad 112. The side support portion 302a is provided with a hole 302ab into which a male screw member 400 (FIGS. 7 and 11) is inserted. A plurality of holes 302ab (two, for example) are provided. The bottom support portion 302b is capable of supporting the bottom surface 112b of the thrust pad 112. The bottom surface 112b of the thrust pad 112 is placed on the top surface of the bottom support portion 302b. The reinforcing portion 302c is provided on the bottom surface of the bottom support portion 302b.

[0044] The upper mounting portion 303 is fixed to the upper end of the rod-shaped portion 301. The upper mounting portion 303 is provided with a plurality of hooks 303a into which hooks provided at the tip of the cable 202 of the crane 200 can be inserted.

[0045] The worker places the side surface 112c of the thrust pad 112 on the support surface 302aa of the side support portion 302a of the hoisting tool 300, and places the upper surface of the lower support portion 302b on the lower surface 112b of the thrust pad 112. Then, the worker passes the male screw member 400 through the hole 302ab of the side support portion 302a to couple the male screw member 400 to the female screw portion 112f of the thrust pad 112. This attaches the lower mounting portion 302 of the hoisting tool 300 to the mounting portion 112m of the thrust pad 112. The worker also inserts a hook provided at the tip of the cable 202 of the crane 200 into the hole 303a of the upper mounting portion 303 and hooks the hook onto the upper mounting portion 303. Note that, as an example, the number of holes 303a is the same as the number of cables 202, but the number of holes 303a may be greater than the number of cables 202. In this case, the hole 303a to be used is appropriately selected depending on the disassembly work location, the specifications of the crane 200, and the like.

[0046] As described above, in this embodiment, the thrust bearing 110 includes a plurality of thrust pads 112, a pad support portion 113, and a thrust runner 111. The plurality of thrust pads 112 are arranged at intervals in the circumferential direction of the shaft 11 on the radially outer side of the shaft 11, which extends in the vertical direction. The pad support portion 113 is positioned vertically below the thrust pads 112 and supports the plurality of thrust pads 112. The thrust runner 111 surrounds the shaft 11 at a position vertically above the thrust pads 112 and is fixed to the shaft 11. A method of disassembling the thrust bearing 110 includes moving the shaft 11 upward using a crane 200 (moving device) to widen the gap between the thrust runner 111 and the thrust pads 112, and attaching a lifting tool 300 to the mounting portion 112m of the thrust pad 112. In addition, the method of disassembling the thrust bearing 110 includes using a crane 200 that supports the thrust pad 112 via a lifting device 300 to move the thrust pad 112 upward to separate the thrust pad 112 from the pad support portion 113, and using the crane 200 to move the thrust pad 112 radially outward from the shaft 11.

[0047] With this configuration, when removing the thrust pads 112, the thrust pads 112 are moved by the crane 200, which reduces the burden on the worker compared to when the worker moves the thrust pads 112 manually. Also, when removing the thrust pads 112, the thrust pads 112 are moved by the crane 200, which reduces the likelihood of the thrust pads 112 hitting other components compared to when the work is done manually. This reduces deterioration in the quality of the thrust pads 112.

[0048] The mounting portion 112m is provided on the radially outer side surface 112c of the thrust pad 112.

[0049] With this configuration, it is easy to attach the suspender 300 to the attachment portion 112m.

[0050] The mounting portion 112m includes a female screw portion 112f, and the suspender 300 is attached to the mounting portion 112m by a male screw member 400 that is coupled with the female screw portion 112f.

[0051] With this configuration, the hoisting tool 300 can be attached to the attachment portion 112m of the thrust pad 112 relatively easily.

[0052] In the above embodiment, the moving device is the crane 200, but the moving device is not limited to this. For example, the moving device may be a jack device.

[0053] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as defined in the claims. [Explanation of symbols]

[0054] 11...shaft, 110...thrust bearing, 111...thrust runner, 112, 112A, 112B...thrust pad, 112c...side surface, 112f...female thread portion, 112m...mounting portion, 113...pad support portion, 200...crane (moving device), 300...hoisting tool, 302...lower mounting portion (hoisting tool side mounting portion), 400...male thread member.

Claims

1. a plurality of thrust pads arranged at intervals in a circumferential direction of a shaft extending in a vertical direction and radially outward of the shaft; a pad support portion that is positioned below the thrust pads in the vertical direction and supports the plurality of thrust pads; a thrust runner that surrounds the shaft and is fixed to the shaft at a position above the thrust pad in the vertical direction; A method for disassembling a thrust bearing comprising: moving the shaft upward by a moving device to widen the gap between the thrust runner and the thrust pad; Attaching a sling to the mounting portion of the thrust pad; a crane supporting the thrust pad via the lifting tool to move the thrust pad upward to separate the thrust pad from the pad support portion; moving the thrust pad radially outward of the shaft by the crane; Including, The mounting portion is provided on a radially outer side surface of the thrust pad. How to disassemble a thrust bearing.

2. a plurality of thrust pads arranged at intervals in a circumferential direction of a shaft extending in a vertical direction and radially outward of the shaft; a pad support portion that is positioned below the thrust pads in the vertical direction and supports the plurality of thrust pads; a thrust runner that surrounds the shaft and is fixed to the shaft at a position above the thrust pad in the vertical direction; A method for disassembling a thrust bearing comprising: moving the shaft upward by a moving device to widen the gap between the thrust runner and the thrust pad; Attaching a sling to the mounting portion of the thrust pad; a crane supporting the thrust pad via the lifting tool to move the thrust pad upward to separate the thrust pad from the pad support portion; moving the thrust pad radially outward of the shaft by the crane; Including, the mounting portion includes a female thread portion, The suspender is attached to the mounting portion by a male screw member that engages with the female screw portion. How to disassemble a thrust bearing.

3. a plurality of thrust pads arranged at intervals in a circumferential direction of a shaft extending in a vertical direction and radially outward of the shaft; a pad support portion that is positioned below the thrust pads in the vertical direction and supports the plurality of thrust pads; a thrust runner that surrounds the shaft and is fixed to the shaft at a position above the thrust pad in the vertical direction; Equipped with The thrust pad has an attachment portion to which a lifting tool to be suspended by a crane can be attached, The mounting portion is provided on a radially outer side surface of the thrust pad. Thrust bearing.

4. a plurality of thrust pads arranged at intervals in a circumferential direction of a shaft extending in a vertical direction and radially outward of the shaft; a pad support portion that is positioned below the thrust pads in the vertical direction and supports the plurality of thrust pads; a thrust runner that surrounds the shaft and is fixed to the shaft at a position above the thrust pad in the vertical direction; Equipped with The thrust pad has an attachment portion to which a lifting tool to be suspended by a crane can be attached, the mounting portion includes a female thread portion, The suspender is attached to the mounting portion by a male screw member that engages with the female screw portion. Thrust bearing.

5. A hoisting device suspended by a crane, It has a lifting tool side mounting part that can be mounted on the thrust bearing, The thrust bearing is a plurality of thrust pads arranged at intervals in a circumferential direction of a shaft extending in a vertical direction and radially outward of the shaft; a pad support portion that is positioned below the thrust pads in the vertical direction and supports the plurality of thrust pads; a thrust runner that surrounds the shaft and is fixed to the shaft at a position above the thrust pad in the vertical direction; Equipped with The thrust pad has a mounting portion, the mounting portion is provided on a radially outer side surface of the thrust pad, The hoisting tool side mounting portion of the hoisting tool is mountable to the mounting portion. Hanging equipment.

6. A hoisting device suspended by a crane, It has a lifting tool side mounting part that can be mounted on the thrust bearing, The thrust bearing is a plurality of thrust pads arranged at intervals in a circumferential direction of a shaft extending in a vertical direction and radially outward of the shaft; a pad support portion that is positioned below the thrust pads in the vertical direction and supports the plurality of thrust pads; a thrust runner that surrounds the shaft and is fixed to the shaft at a position above the thrust pad in the vertical direction; Equipped with The thrust pad has a mounting portion, the mounting portion includes a female thread portion, The suspender-side mounting portion of the suspender is attached to the mounting portion by a male screw member that engages with the female screw portion. Hanging equipment.

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