Tool for disassembling dynamometer bearing
By designing a tool for disassembling the bearings of the dynamometer, using force transmission parts and driving components to transmit the working force to the inner ring of the bearing, the problem of bearing damage caused by the existing pull-out method is solved, and an efficient and safe disassembly process is achieved.
Patent Information
- Application Number
- CN202422198856.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-06
AI Technical Summary
The existing pull-out method is prone to damage when disassembling the bearing of the dynamometer, and it is difficult to effectively avoid damage to the bearing during the disassembly.
A tool for disassembling the bearings of the dynamometer, including force transmission parts and drive components, is designed. The force transmission member is arranged between the bearing of the dynamometer and the bearing rear gland flange. The driving assembly moves outward along the axial direction of the rotor shaft through the bearing rear gland, transmitting the force to the inner ring of the bearing of the dynamometer.
By directly applying the action force to the inner ring of the bearing of the dynamometer, the direct effect of the existing pull-out method on the outer ring is avoided, the removal efficiency of the bearing is significantly improved, and the damage of the bearing during the disassembly is effectively avoided.
Smart Images
Figure CN222986858U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tooling, and particularly relates to a tooling for disassembling a dynamometer bearing. Background Art
[0002] As the core test equipment of the engine test bench, due to its harsh and complex test conditions and vibration during operation, the dynamometer bearing often needs to be regularly maintained and replaced according to its service life to ensure the normal test work of the engine test bench.
[0003] Such as Figure 1 shown in the assembly schematic diagram of the existing dynamometer (taking Dyno Road 500kW and Dyno Force 360 - 560kW series dynamometers as examples), the dynamometer bearing 1 is assembled on the rotor shaft 2 of the dynamometer. The inner ring of the dynamometer bearing 1 is in contact with the shoulder of the rotor shaft 2, and the outer ring of the dynamometer bearing 1 is in contact with the bearing rear gland flange 3. Due to the influence of the structure of the dynamometer itself and the space it is in, in order to avoid damage to other components, the existing technology generally uses the pulling method to disassemble the dynamometer bearing 1 from the rotor shaft 2. However, since the inner ring of the dynamometer bearing 1 and the rotor shaft 2 are in a tight fit, the existing pulling method is likely to cause damage to the dynamometer bearing 1 during the disassembly process. Summary of the Utility Model
[0004] The purpose of the utility model is to solve the problem that the existing pulling method is likely to cause damage to the dynamometer bearing during the disassembly process, and to provide a tooling for disassembling the dynamometer bearing, which can easily disassemble the dynamometer bearing from the rotor shaft on the premise of preventing damage to the dynamometer bearing.
[0005] To achieve the above purpose, the utility model provides a tooling for disassembling a dynamometer bearing, including:
[0006] A force transmission member, which is arranged between the dynamometer bearing and the bearing rear gland flange. The first end of the force transmission member is in contact with the inner ring of the dynamometer bearing, and the second end of the force transmission member opposite to the first end is in contact with the bearing rear gland flange; and
[0007] A driving assembly, which is used to drive the bearing rear gland flange to move axially outward along the rotor shaft, so as to be able to push the dynamometer bearing axially outward along the rotor shaft through the force transmission member.
[0008] Preferably, the force transmission member includes a plurality of arc-shaped plates, and the plurality of arc-shaped plates can be spliced with each other to form a cylindrical structure surrounding the rotor shaft.
[0009] Preferably, the driving assembly includes:
[0010] A limiting plate, which is fixed to the end of the rotor shaft. At least two limiting holes are provided on the limiting plate, and at least two of the limiting holes are evenly spaced around the center of the limiting plate; and
[0011] At least two tie rods, which extend along the axial direction of the rotor shaft and are evenly spaced around the axis of the rotor shaft;
[0012] Wherein, one end of the tie rod is connected to the bearing rear gland flange, the other end of the tie rod passes through the limiting hole on the limiting plate, and a first nut is screwed on the tie rod. The first nut is configured to form a stop fit with the limiting plate during rotation and drive the bearing rear gland flange to move in the direction towards the limiting plate through the tie rod.
[0013] Preferably, a first threaded section is provided on the rod body of the tie rod near the bearing rear gland flange, and the first threaded section is used for screwing into the threaded hole on the bearing rear gland flange.
[0014] Preferably, a second nut is screwed on the part of the first threaded section passing through the threaded hole.
[0015] Preferably, the rod body of the tie rod near the bearing rear gland flange is configured to be able to freely pass through the threaded hole on the bearing rear gland flange. A second nut is screwed on the part of the tie rod passing through the threaded hole, and the second nut is used to stop and lock the tie rod on the bearing rear gland flange.
[0016] Preferably, the limiting plate is a circular plate, and the limiting holes are arc-shaped holes concentric with the limiting plate.
[0017] Preferably, the limiting plate is a circular plate, and the limiting holes are strip-shaped holes extending along the radial direction of the limiting plate.
[0018] Preferably, the limiting holes include a plurality of strip-shaped hole units, and a plurality of the strip-shaped hole units are sequentially spaced in the circumferential direction of the limiting plate.
[0019] Preferably, a through hole is provided at the center position of the limiting plate for a locking bolt to lock and fix the limiting plate to the end of the rotor shaft.
[0020] Through the above technical solution, by providing a force transmission member between the dynamometer bearing and the bearing rear gland flange, the acting force applied to the bearing rear gland flange by the drive assembly is transmitted to the inner ring of the dynamometer bearing, avoiding the problem that the existing pulling method directly applies the acting force to the outer ring of the dynamometer bearing, resulting in damage to the dynamometer bearing during the disassembly process.
[0021] In view of the characteristic that the dynamometer bearing is tightly fitted with the rotor shaft through the inner ring, the tooling provided by the present utility model directly applies the acting force to the inner ring of the dynamometer bearing through the force transmission member, so that the dynamometer bearing can be easily disassembled from the rotor shaft. Compared with the existing pulling method that applies the acting force to the outer ring of the dynamometer bearing for disassembly, the tooling provided by the present utility model significantly improves the disassembly efficiency of the dynamometer bearing and can effectively avoid the problem of damage to the dynamometer bearing during disassembly. Brief Description of the Drawings
[0022] Figure 1 is an assembly schematic diagram of the existing dynamometer;
[0023] Figure 2 is a state schematic diagram of a tooling for disassembling a dynamometer bearing provided by the present utility model during use;
[0024] Figure 3 is a state schematic diagram of another tooling for disassembling a dynamometer bearing provided by the present utility model during use;
[0025] Figure 4 is a structural schematic diagram of a force transmission member provided by the present utility model;
[0026] Figure 5 is Figure 4 a schematic diagram of the A-A cross-section in
[0027] Figure 6 is a structural schematic diagram of a limiting plate with two circular limiting holes provided by the present utility model;
[0028] Figure 7 is a structural schematic diagram of a limiting plate with three circular limiting holes provided by the present utility model;
[0029] Figure 8 is a structural schematic diagram of a limiting plate with four circular limiting holes provided by the present utility model;
[0030] Figure 9 is a structural schematic diagram of a limiting plate with two arc-shaped limiting holes provided by the present utility model;
[0031] Figure 10 is a structural schematic diagram of a limiting plate with two groups of arc-shaped limiting holes provided by the present utility model;
[0032] Figure 11 is a structural schematic diagram of a limiting plate with two groups of strip-shaped holes extending radially provided by the present utility model.
[0033] Explanation of Reference Numerals
[0034] 1. Dynamometer bearing; 2. Rotor shaft; 3. Rear bearing gland flange; 301. Threaded hole; 10. Force transmission member; 101. First end; 102. Second end; 11. Arc plate; 20. Limiting plate; 21. Limiting hole; 211. First strip hole unit; 212. Second strip hole unit; 22. Through hole; 30. Pull rod; 31. First threaded section; 40. First nut; 50. Second nut; 60. Locking bolt. Detailed implementation manners
[0035] The following will describe in detail the detailed implementation manners of the present utility model in conjunction with the accompanying drawings. It should be understood that the detailed implementation manners described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model.
[0036] The present utility model provides a tooling for disassembling the dynamometer bearing 1. The tooling includes a force transmission member 10 and a driving assembly. The force transmission member 10 is arranged between the dynamometer bearing 1 and the rear bearing gland flange 3. The first end 101 of the force transmission member 10 is in contact with the inner ring of the dynamometer bearing 1, and the second end 102 of the force transmission member 10 opposite to the first end 101 is in contact with the rear bearing gland flange 3. The driving assembly is used to drive the rear bearing gland flange 3 to move axially outward along the rotor shaft 2, so as to be able to push the dynamometer bearing 1 axially outward along the rotor shaft 2 through the force transmission member 10.
[0037] The tooling provided by the present utility model cleverly utilizes the existing rear bearing gland flange 3 beside the dynamometer bearing 1 on the dynamometer. By arranging a force transmission member 10 between the dynamometer bearing 1 and the rear bearing gland flange 3, the acting force applied to the rear bearing gland flange 3 by the driving assembly is transmitted to the inner ring of the dynamometer bearing 1, avoiding the problem that the existing pulling method directly applies the acting force to the outer ring of the dynamometer bearing 1, resulting in damage to the dynamometer bearing 1 during the disassembly process.
[0038] The tooling provided by the present utility model is aimed at the characteristic that the dynamometer bearing 1 is tightly fitted with the rotor shaft 2 through the inner ring. By directly applying the acting force to the inner ring of the dynamometer bearing 1 through the force transmission member 10, the dynamometer bearing 1 can be easily disassembled from the rotor shaft 2. Compared with the existing pulling method that applies the acting force to the outer ring of the dynamometer bearing 1, the tooling provided by the present utility model significantly improves the disassembly efficiency of the dynamometer bearing 1 and can effectively avoid the problem of damage to the dynamometer bearing 1 during the disassembly process.
[0039] In the present utility model, the force transmission member 10 can adopt any appropriate structural form as long as it can be conveniently arranged between the dynamometer bearing 1 and the bearing rear gland flange 3. In some embodiments, the force transmission member 10 includes a plurality of arc-shaped plates 11, and the plurality of arc-shaped plates 11 can be spliced with each other to form a cylindrical structure surrounding the rotor shaft 2.
[0040] It can be understood that through the above arrangement, it is convenient to arrange the force transmission member 10 between the dynamometer bearing 1 and the bearing rear gland flange 3. Exemplarily, in a specific embodiment of the present utility model, in combination with Figure 4 and Figure 5 as shown, the force transmission member 10 includes two arc-shaped plates 11, and the two arc-shaped plates 11 can be spliced to form a cylindrical structure surrounding the rotor shaft 2. When using this tooling to disassemble the dynamometer bearing 1 from the rotor shaft 2, the first end 101 of the cylindrical force transmission member 10 abuts against the inner ring of the dynamometer bearing 1, and the second end 102 abuts against the bearing rear gland flange 3.
[0041] In the present utility model, the driving assembly can be of any appropriate structural form as long as it can drive the bearing rear gland flange 3 to move axially outward along the rotor shaft 2. In some embodiments, the driving assembly includes a limiting plate 20 and at least two pull rods 30. The limiting plate 20 is fixed to the end of the rotor shaft 2, and at least two limiting holes 21 are provided on the limiting plate 20. The at least two limiting holes 21 are evenly spaced around the center of the limiting plate 20; the at least two pull rods 30 extend along the axial direction of the rotor shaft 2 and are evenly spaced around the axis of the rotor shaft 2; wherein, one end of the pull rod 30 is connected to the bearing rear gland flange 3, the other end of the pull rod 30 passes through the limiting hole 21 on the limiting plate 20 and a first nut 40 is screwed on the pull rod 30, and the first nut 40 is arranged to form a stop fit with the limiting plate 20 when rotating and drive the bearing rear gland flange 3 to move in the direction towards the limiting plate 20 through the pull rod 30.
[0042] According to the driving assembly provided by the present utility model, during the process of rotating the first nut 40, due to the stop effect of the limiting plate 20, the pull rod 30 is driven to move axially outward along the rotor shaft 2, driving the bearing rear gland flange 3 to move outward, and then applying the outward moving force to the inner ring of the dynamometer bearing 1 through the force transmission member 10, so that the dynamometer bearing 1 can move axially outward along the rotor shaft 2.
[0043] In the present utility model, one end of the pull rod 30 can be connected to the bearing rear gland flange 3 in any appropriate form. In some embodiments, such as Figure 2As shown, a first threaded section 31 is provided on the rod body of the pull rod 30 close to the bearing rear gland flange 3, and the first threaded section 31 is used for screwing into the threaded hole 301 on the bearing rear gland flange 3. It can be understood that in this solution, the threaded hole 301 on the bearing rear gland flange 3 is directly utilized, and the threaded connection can be achieved by providing the first threaded section 31 on the pull rod 30 and the threaded hole 301 on the bearing rear gland flange 3.
[0044] In some embodiments, in order to improve the connection strength between the pull rod 30 and the bearing rear gland flange 3, a second nut 50 is screwed on the part of the first threaded section 31 passing through the threaded hole 301. By screwing the second nut 50 on the first threaded section 31, the connection effect between the pull rod 30 and the bearing rear gland flange 3 is further improved. During the force application process of the driving assembly, the acting force can be reliably transmitted to the inner ring of the dynamometer bearing 1 through the force transmission member 10.
[0045] It can be understood that when the tooling provided by the present utility model is specifically used, the pull rod 30 and the bearing rear gland flange 3 do not need to be completely connected together. As long as the acting force applied by the first nut 40 to the pull rod 30 can be transmitted to the bearing rear gland flange 3, enabling it to move axially outward along the rotor shaft 2, and then the acting force is applied to the inner ring of the dynamometer bearing 1 through the force transmission member 10. In some embodiments, as Figure 3 shown, the rod body of the pull rod 30 close to the bearing rear gland flange 3 is set to be able to freely pass through the threaded hole 301 on the bearing rear gland flange 3. A second nut 50 is screwed on the part of the pull rod 30 passing through the threaded hole 301, and the second nut 50 is used to stop and lock the pull rod 30 on the bearing rear gland flange 3.
[0046] It can be understood that setting the rod diameter of the pull rod 30, or the rod diameter of the end close to the bearing rear gland flange 3, to be smaller than the inner diameter of the threaded hole 301 can achieve the free passing of the rod body of the pull rod 30 close to the bearing rear gland flange 3 through the threaded hole 301; after the second nut 50 is installed, the pull rod 30 can still move axially inward along the rotor shaft 2, but when moving outward, the second nut 50 will form a stop fit with the bearing rear gland flange 3, and then the pulling force of the pull rod 30 is transmitted to the inner ring of the dynamometer bearing 1 through the bearing rear gland flange 3 and the force transmission member 10. Through the above settings, the acting force of the driving assembly will be transmitted to the bearing rear gland flange 3 through the second nut 50, thus avoiding possible damage to the internal thread structure of the threaded hole 301.
[0047] It should be noted that in the present utility model, the number of the limiting holes 21 on the limiting plate 20 depends on the number of the pull rods 30. Exemplarily, as Figure 6As shown, there are two pull rods 30 provided, and there are two limit holes 21 on the limit plate 20; as Figure 7 As shown, there are three pull rods 30 provided, and there are three limit holes 21 on the limit plate 20; as Figure 8 As shown, there are four pull rods 30 provided, and there are four limit holes 21 on the limit plate 20.
[0048] Furthermore, the distance of the limit hole 21 from the center position of the limit plate 20 depends on the position of the threaded hole 301 of the bearing rear gland flange 3. For different dynamometers, the distance of the threaded hole 301 of the bearing rear gland flange 3 from the axis of the rotor shaft 2 is different. When selecting the limit plate 20, it should be able to satisfy aligning the limit hole 21 with the threaded hole 301 on the bearing rear gland flange 3. Here, "aligning" means that the pull rod 30 can pass through the limit hole 21 and the threaded hole 301 simultaneously and be parallel to the rotor shaft 2. For the convenience of assembling the tooling, as Figure 9 shown, in some embodiments, the limit plate 20 is a circular plate, and the limit hole 21 is an arc-shaped hole concentric with the limit plate 20. It can be understood that by setting the limit hole 21 as an arc-shaped hole, when installing the limit plate 20, it is only necessary to roughly align the limit hole 21 with the threaded hole 301.
[0049] It can be understood that in order to meet the disassembly requirements of the dynamometer bearing 1 of different models of dynamometers, the limit holes 21 applicable to different bearing rear gland flanges 3 can be integrated on one limit plate 20, as Figure 10 shown, two arc-shaped limit holes 21 are integrated on this limit plate 20, and the distances of the two arc-shaped limit holes 21 from the center of the limit plate 20 are different, so as to be able to correspond to two sizes of bearing rear gland flanges 3.
[0050] In some embodiments, in combination with Figure 11 shown, the limit plate 20 is a circular plate, and the limit hole 21 is a strip-shaped hole extending along the radial direction of the limit plate 20. It can be understood that by setting the limit hole 21 to extend along the radial direction of the limit plate 20, it can be directly applicable to different sizes of bearing rear gland flanges 3.
[0051] Furthermore, the limit hole 21 includes a plurality of strip-shaped hole units, and the plurality of strip-shaped hole units are sequentially arranged at intervals in the circumferential direction of the limit plate 20. By splitting the limit hole 21 into a plurality of strip-shaped hole units, while being applicable to different sizes of bearing rear gland flanges 3, it avoids the adverse effect on its structural strength caused by the overlong extension of the limit hole 21 in the radial direction of the limit plate 20.
[0052] Exemplarily, as Figure 11As shown in the figure, taking the limit plate 20 with a diameter of 208 mm as an example, the limit holes 21 include two strip hole units, and the two strip hole units are arranged at intervals in the circumferential direction of the limit plate 20. The two strip hole units are the first strip hole unit 211 and the second strip hole unit 212 respectively. Among them, the distance between the pull rod 30 that can be accommodated by the first strip hole unit 211 and the center position of the limit plate 20 is 62.5 mm - 90 mm; the distance between the pull rod 30 that can be accommodated by the second strip hole unit 212 and the center position of the limit plate 20 is 40 mm - 62.5 mm. Therefore, the distance between the pull rod 30 that the limit plate 20 can adapt to and the center position of the limit plate 20 is 40 mm - 90 mm.
[0053] In the present utility model, the limit plate 20 can be fixed to the end of the rotor shaft 2 in any suitable form. In some embodiments, a through hole 22 is provided at the center position of the limit plate 20 for the locking bolt 60 to lock and fix the limit plate 20 to the end of the rotor shaft 2.
[0054] It should be noted that for the disassembly of the dynamometer bearing 1, it is necessary to remove a plurality of other components on the dynamometer first. The present utility model will not elaborate on the removal of other components until Figure 2 the relative state of the rotor shaft 2 and the dynamometer bearing 1 shown in the figure.
[0055] The following details the process of disassembling the dynamometer bearing 1 from the rotor shaft 2 in combination with the tooling provided by the present utility model:
[0056] The first step is to clean the rotor shaft 2, the dynamometer bearing 1, and the bearing rear gland flange 3 before disassembling the dynamometer bearing 1. The purpose is to avoid damage to the surface of the rotor shaft 2 caused by foreign objects when the dynamometer bearing 1 is pulled out. In particular, there will be a large amount of old grease on the side of the bearing rear gland flange 3 close to the dynamometer bearing 1, which needs to be cleaned up to facilitate the arrangement of the force transmission member 10 between the dynamometer bearing 1 and the bearing rear gland flange 3.
[0057] The second step is to install the limit plate 20 to the end of the rotor shaft 2 through the locking bolt 60.
[0058] The third step is to pass the pull rod 30 through the limit hole 21 on the limit plate 20 and connect it to the bearing rear gland flange 3, and then screw the first nut 40 on the pull rod 30. Note that at this time, do not screw the first nut 40 tightly against the limit plate 20 first.
[0059] Step 4: Manually adjust the distance between the bearing rear gland flange 3 and the dynamometer bearing 1, and install the force transmission member 10 between the dynamometer bearing 1 and the bearing rear gland flange 3. It should be noted in this step that during the installation of the force transmission member 10, it is necessary to ensure that the first end 101 of the force transmission member 10 contacts the inner ring of the dynamometer bearing 1, and the second end 102 of the force transmission member 10 contacts the bearing rear gland flange 3; then gradually tighten the first nut 40 corresponding to each pull rod 30 to clamp the force transmission member 10 between the dynamometer bearing 1 and the bearing rear gland flange 3.
[0060] Step 5: Slowly and continuously tighten the first nut 40 corresponding to each pull rod 30. It should be noted that the tightening force of each first nut 40 should be uniform to avoid tilting when the dynamometer bearing 1 is pulled out. The width of the bearing position on the rotor shaft 2 is the same as the width of the dynamometer bearing 1. When the dynamometer bearing 1 completely leaves the bearing position, the dynamometer bearing 1 can be directly removed, that is, the disassembly of the dynamometer bearing 1 is completed.
[0061] The tooling provided by the present utility model cleverly utilizes the bearing rear gland flange 3 on the original dynamometer. By setting the force transmission member 10 between the dynamometer bearing 1 and the bearing rear gland flange 3, the acting force applied to the bearing rear gland flange 3 by the driving component is directly transmitted to the inner ring of the dynamometer bearing 1, which can not only improve the disassembly efficiency of the dynamometer bearing 1, but also effectively avoid the problem of damage to the dynamometer bearing 1 during the disassembly process.
[0062] The tooling provided by the present utility model has the advantages of simple structure and convenient use, enabling the existing engine test bench operation team to easily obtain the ability to independently replace the dynamometer bearing 1. While reducing the operation and maintenance costs, it also greatly shortens the maintenance cycle, thereby improving the operation efficiency of the engine test bench.
[0063] In the tooling provided by the present utility model, through the structural optimization of the limit plate 20, it can be applicable to the disassembly operation of the dynamometer bearings 1 of different series of dynamometers. It has a simple structure and low cost, and has broad application prospects.
[0064] The preferred embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited thereto. Within the scope of the technical concept of the present utility model, various simple modifications can be made to the technical solutions of the present utility model. To avoid unnecessary repetition, the present utility model will not separately describe various possible combinations. But these simple modifications and combinations should also be regarded as the content disclosed by the present utility model and all fall within the protection scope of the present utility model.
Claims
1. A tool for disassembling a dynamometer bearing, characterized in that: include: A force transmission member (10), the force transmission member (10) being arranged between the dynamometer bearing (1) and the bearing rear gland flange (3), the first end (101) of the force transmission member (10) being in contact with the inner ring of the dynamometer bearing (1), and the second end (102) of the force transmission member (10) opposite to the first end (101) being in contact with the bearing rear gland flange (3); and A drive assembly is used to drive the bearing rear cover flange (3) to move outward along the axial direction of the rotor shaft (2) so as to be able to push the dynamometer bearing (1) outward along the axial direction of the rotor shaft (2) through the force transmission member (10).
2. The tool for disassembling a dynamometer bearing according to claim 1, characterized in that: The force transmission member (10) comprises a plurality of arc-shaped plates (11), and the plurality of arc-shaped plates (11) can be spliced together to form a cylindrical structure surrounding the rotor shaft (2).
3. The tool for disassembling a dynamometer bearing according to claim 1 or 2, characterized in that: The drive assembly comprises: a limiting plate (20), the limiting plate (20) being fixed to an end of the rotor shaft (2), the limiting plate (20) being provided with at least two limiting holes (21), the at least two limiting holes (21) being evenly spaced and distributed around the center of the limiting plate (20); and At least two tie rods (30), the at least two tie rods (30) extending along the axial direction of the rotor shaft (2) and being evenly spaced and distributed around the axis of the rotor shaft (2); One end of the pull rod (30) is connected to the bearing rear cover flange (3), the other end of the pull rod (30) passes through the limiting hole (21) on the limiting plate (20) and a first nut (40) is screwed on the pull rod (30), and the first nut (40) is configured to form a stop fit with the limiting plate (20) when rotating and drive the bearing rear cover flange (3) to move in the direction toward the limiting plate (20) through the pull rod (30).
4. The tool for disassembling a dynamometer bearing according to claim 3, characterized in that: A first threaded section (31) is provided on the rod body of the pull rod (30) close to the bearing rear gland flange (3), and the first threaded section (31) is used for being threadedly connected to a threaded hole (301) on the bearing rear gland flange (3).
5. The tool for disassembling a dynamometer bearing according to claim 4, characterized in that: A second nut (50) is screwed onto the portion of the first threaded section (31) that passes through the threaded hole (301).
6. The tool for disassembling a dynamometer bearing according to claim 3, characterized in that: The rod body of the pull rod (30) close to the bearing rear cover flange (3) is arranged to be able to freely pass through the threaded hole (301) on the bearing rear cover flange (3), and the part of the pull rod (30) passing through the threaded hole (301) is screwed with a second nut (50), and the second nut (50) is used to stop and lock the pull rod (30) on the bearing rear cover flange (3).
7. The tool for disassembling a dynamometer bearing according to claim 3, characterized in that: The limiting plate (20) is a circular plate, and the limiting hole (21) is an arc-shaped hole concentric with the limiting plate (20).
8. The tool for disassembling a dynamometer bearing according to claim 3, characterized in that: The limiting plate (20) is a circular plate, and the limiting hole (21) is a strip-shaped hole extending along the radial direction of the limiting plate (20).
9. The tool for disassembling a dynamometer bearing according to claim 8, characterized in that: The limiting hole (21) comprises a plurality of strip-shaped hole units, and the plurality of strip-shaped hole units are sequentially spaced apart in the circumferential direction of the limiting plate (20).
10. The tool for disassembling a dynamometer bearing according to claim 3, characterized in that: A through hole (22) is provided at the center of the limit plate (20) for a locking bolt (60) to lock and fix the limit plate (20) to the end of the rotor shaft (2).