Special tool for disassembling motor bearing of liquid oxygen pump
By designing special tools for bearing removal of liquid oxygen pump motors, and using the combination of disc fixtures and tensioner nuts, the problem of difficulty in disassembling the bearings of liquid oxygen pump motors is solved, a simple and quick disassembly process is achieved and the motor bearings are protected.
Patent Information
- Application Number
- CN202510552872.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2025-07-11
AI Technical Summary
The bearings of the liquid oxygen pump motor are stuck and make it difficult to disassemble, and traditional tools are difficult to operate and may damage the motor shaft.
Design a special tool for bearing removal of liquid oxygen pump motors, including disc fixtures, tension rods and tension nuts. By clamping the outer ring of the bearing and using the fit of the tension rods and nuts, a uniform tension force is provided to remove the bearing.
Adapt to narrow operating space, remove bearings easily and quickly, avoid damage to the motor shaft body, and ensure bearing stability and integrity.
Smart Images
Figure CN120287249A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of hydraulic pump motor bearing removal, and in particular to a special tool for disassembling liquid oxygen pump motor bearings. Background Art
[0002] As a key equipment in the production process of an oxygen plant, the liquid oxygen pump can efficiently complete the pressure increase and liquid delivery tasks under normal operation, ensuring the smooth connection of the production process and the precise management of the cooling capacity, which is crucial to maintaining the stable operation of the entire oxygen production system. However, in the actual production process, the problem of the bearing of the liquid oxygen pump motor getting stuck often occurs, which often becomes a key factor restricting production continuity and efficiency. When the bearing of the liquid oxygen pump motor gets stuck, due to the tight bite between the bearing and the motor shaft, conventional disassembly tools and methods are difficult to work. In particular, considering that the space at the end of the liquid oxygen pump motor is extremely narrow, ordinary pullers and other disassembly tools cannot be effectively used due to size limitations or insufficient operating space, making the bearing disassembly work extremely difficult. Summary of the invention
[0003] The purpose of the present application is to provide a special tool for disassembling the bearing of a liquid oxygen pump motor, so as to solve the problem of difficulty in disassembling the bearing of a liquid oxygen pump motor in the prior art.
[0004] In order to solve the above technical problems, this application is implemented by adopting the following technical solutions:
[0005] The present application provides a special tool for disassembling a bearing of a liquid oxygen pump motor, comprising: a disc clamp, the disc clamp being used to clamp an outer ring of the bearing;
[0006] A disc fixing plate, wherein at least two first through holes are defined axially on the disc fixing plate, and a second through hole is defined at the axis of the disc fixing plate to accommodate a nut located at the end of the liquid oxygen pump motor shaft;
[0007] A tension rod, one end of which can pass through the first through hole and is detachably axially arranged on the disc clamp;
[0008] A tensioning nut, wherein the tensioning nut is threadedly connected to the tensioning rod and is located at a side of the disc fixing plate away from the disc clamp.
[0009] During the disassembly of the liquid oxygen pump motor bearing, a disc clamp is used to hold the outer ring of the bearing to ensure the stability of the bearing during disassembly. Then, the tension rod is axially connected to the disc clamp to ensure a firm connection, so that it can withstand sufficient pulling force during the subsequent bearing pulling operation. Subsequently, the disc fixing plate is sleeved on the tension rod through the first through hole. At this time, the nut at the rear end of the motor shaft passes through the second through hole, enabling the disc fixing plate to abut against the motor shaft axially and providing support for the subsequent pulling operation. Immediately afterwards, the tension nut is screwed onto the tension rod, and by screwing the tension nut, the disc fixing plate moves towards the disc clamp. As the disc fixing plate moves, it presses against the motor shaft, and then the bearing is subjected to the pulling force of the tension rod. As the tension nut is continuously screwed, the bearing will be subjected to sufficient pulling force and be disassembled from the motor. It should be noted that during the operation, the tension rods should be evenly distributed on the end face of the disc clamp to ensure the uniformity of the axial force on the bearing during the bearing pulling process. The two tension rods with the farthest distance should be screwed simultaneously to prevent the bearing from skewing or being damaged during the pulling process.
[0010] This solution can adapt to the narrow operating space of the liquid oxygen pump motor and solve the problem that traditional tools are difficult to operate. By screwing the tension nut, the disassembly of the bearing can be achieved. The operation is simple and fast, and it can avoid damaging the motor shaft during the bearing disassembly process.
[0011] Optionally, the disc clamp axially defines a fixing screw hole corresponding to the first through hole, and one end of the tension rod passes through the first through hole and is threadedly connected to the fixing screw hole.
[0012] Through the threaded connection, the connection between the tension rod and the disc clamp is firm and can withstand a large pulling force, ensuring that it will not loosen or fall off during the bearing disassembly process.
[0013] Optionally, the disc clamp includes a first clamp and a second clamp. The first clamp and the second clamp are connected by a fastening bolt. The inner walls of the first clamp and the second clamp can fit with the outer ring of the bearing. By screwing the fastening bolt, the inner walls of the first clamp and the second clamp can press or loosen the outer ring of the bearing.
[0014] In this solution, the disc clamp forms a clamping space for holding the outer ring of the bearing by the first clamp and the second clamp together. The first clamp and the second clamp are connected by a fastening bolt, and their inner walls can fit with the outer ring of the bearing, ensuring that the pressure can be evenly distributed during the clamping process and avoiding damaging the outer ring of the bearing during the clamping process, thereby protecting the integrity and service life of the bearing. By screwing the fastening bolt, the inner walls of the first clamp and the second clamp can press the outer ring of the bearing tightly, ensuring that the bearing will not loosen or fall off during the disassembly process.
[0015] Optionally, two first cutouts are defined on the first clamp. The first cutout has a first cross-section. The first clamp and the second clamp jointly define two first screw holes. The two first screw holes respectively penetrate through the end faces of the two connection parts of the first clamp and the second clamp, and the openings of the two first screw holes are respectively located on the two first cross-sections. The fastening bolt is threadedly connected to the first screw hole.
[0016] In this solution, the first cutout not only provides an opening position for the first screw hole, but also provides a screwing space for the fastening bolt. When using the disc clamp, first align the first clamp and the second clamp so that the two first screw holes are aligned. Then, insert the fastening bolt into the first screw hole and initially tighten it to preliminarily connect the first clamp and the second clamp. At this time, there should be a certain degree of looseness between the clamps for subsequent sleeving on the outer ring of the bearing. Next, sleevethe preliminarily connected first clamp and second clamp on the outer ring of the bearing to be disassembled, and tighten the fastening bolt to press the first clamp and the second clamp against the outer ring of the bearing. By adjusting the tightening degree of the bolt, the clamping force of the first clamp and the second clamp on the bearing can be controlled.
[0017] Optionally, a second cutout and a third cutout are respectively defined on the first clamp and the second clamp. The second cutout has a second cross-section, and the third cutout has a third cross-section. The first clamp and the second clamp jointly define a second screw hole and a third screw hole. The second screw hole and the third screw hole respectively penetrate through the end faces of the two connection parts of the first clamp and the second clamp. The opening of the third screw hole is located on the third cross-section, and the opening of the second screw hole is located on the second cross-section.
[0018] In this solution, the connection between the first clamp and the second clamp can also be achieved through the cooperation of the fastening bolt with the second screw hole and the third screw hole.
[0019] Optionally, the first cutout has a first operating surface that is V-shaped with respect to the first cross-section, and the projection of the first operating surface on the first cross-section does not overlap with the first screw hole. Thus, sufficient screwing space is provided for screwing tools such as a knob wrench.
[0020] Compared with the prior art, the beneficial effects achieved by the present application are as follows: In the present application, the outer ring of the bearing is clamped by a disc fixture. The disc fixture is connected to a tension rod, and a disc fixing plate is arranged on the tension rod. The disc fixing plate axially abuts against the motor shaft to form a reaction support. The tension rod is tensioned by turning a knob tension nut, and the axial tension is transmitted to the bearing through the disc fixture, thereby realizing the disassembly of the bearing. The present application can adapt to the narrow operation space of the liquid oxygen pump motor and solve the problem that traditional tools are difficult to operate. By screwing the tension nut, the disassembly of the bearing can be realized, which is simple and fast in operation, and can avoid damaging the motor shaft body during the bearing disassembly process. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0022] Figure 1 It is a schematic diagram of the overall structure of some embodiments provided by the present application;
[0023] Figure 2 It is a schematic diagram of the structure of the disc fixing plate of some embodiments provided by the present application;
[0024] Figure 3 It is a schematic diagram of the structure of the disc fixture of some embodiments provided by the present application;
[0025] Figure 4 It is a schematic diagram of the structure of the disc fixture of some embodiments provided by the present application;
[0026] Figure 5 It is a schematic diagram of the first sectional structure of some embodiments provided by the present application;
[0027] Figure 6 It is a schematic diagram of the structure of the disc fixture of some embodiments provided by the present application;
[0028] Figure 7 It is a schematic diagram of the second sectional and third sectional structures of some embodiments provided by the present application;
[0029] Figure 8 It is a schematic diagram of the overall structure of some embodiments provided by the present application.
[0030] Description of reference numerals: 1 - Disc fixture; 2 - Disc fixing plate; 3 - Tension rod; 4 - Tension nut; 11 - Fixed screw hole; 12 - First fixture; 13 - Second fixture; 14 - First screw hole; 15 - Second screw hole; 16 - Third screw hole; 21 - First through hole; 22 - Second through hole; 121 - First notch; 122 - Second notch; 131 - Third notch; 1211 - First section; 1212 - First operating surface; 1221 - Second section; 1311 - Third section. Detailed implementation manners
[0031] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present disclosure / the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way constitutes a limitation on the present application and its application or use.
[0032] Embodiment 1
[0033] This embodiment introduces a special tool for disassembling the bearings of a liquid oxygen pump motor. Refer to Figure 1 and Figure 2 , the special tool for disassembling the bearings of the liquid oxygen pump motor in this embodiment includes a disc fixture 1, a disc fixing plate 2, and a tension nut 4. Among them, the disc fixture 1 is used to clamp the outer ring of the bearing to ensure the stability of the bearing during disassembly. The disc fixture 1 is axially detachably provided with a tension rod 3. At least two first through holes 21 are axially defined on the disc fixing plate 2, and one end of the tension rod 3 can pass through the first through holes 21. A second through hole 22 is defined at the center of the disc fixing plate 2 to accommodate the nut located at the rear end of the shaft of the hydraulic pump motor. Further, on the side of the disc fixing plate 2 facing away from the disc fixture 1, a tension nut 4 is threadedly connected to the tension rod 3, and a gasket is provided between the tension nut 4 and the disc fixing plate 2.
[0034] During the disassembly of the bearings of the liquid oxygen pump motor, first, use the disc fixture 1 to clamp the outer ring of the bearing to ensure the stability of the bearing during disassembly. Then, axially connect the tension rod 3 to the disc fixture 1 to ensure a firm connection so that it can withstand sufficient pulling force during the subsequent bearing pulling operation. Subsequently, sleeve the disc fixing plate 2 onto the tension rod 3 through the first through hole 21. At this time, the nut at the rear end of the motor shaft passes through the second through hole 22, enabling the disc fixing plate 2 to abut against the motor shaft axially, providing support for the subsequent pulling operation. Immediately afterwards, screw the tension nut 4 onto the tension rod 3, and by screwing the tension nut 4, make the disc fixing plate 2 move towards the direction of the disc fixture 1. As the disc fixing plate 2 moves, the disc fixing plate 2 will press against the motor shaft, and thus the bearing will be subjected to the pulling force of the tension rod 3. As the tension nut 4 is continuously screwed, the bearing will be subjected to sufficient pulling force and be disassembled from the motor. It should be noted that during the operation, the tension rods 3 should be evenly distributed on the end face of the disc fixture 1 to ensure the uniformity of the axial force on the bearing during the bearing pulling process. The two farthest-apart tension rods 3 should be screwed simultaneously to avoid skewing or damage to the bearing during the pulling process.
[0035] This solution can adapt to the narrow operating space of the liquid oxygen pump motor and solve the problem that traditional tools are difficult to operate. By screwing the tension nut 4, the disassembly of the bearing can be achieved. The operation is simple and fast, and it can avoid damaging the motor shaft during the bearing disassembly process.
[0036] Embodiment 2:
[0037] Based on the same inventive concept as Embodiment 1, referring to Figures 1 to 5 , in this embodiment, the tension rod 3 is threadedly connected to the disc fixture 1. Specifically, the disc fixture 1 axially defines a fixed screw hole 11 corresponding to the first through hole 21. The inner diameter of the first through hole 21 is larger than the inner diameter of the fixed screw hole 11. One end of the tension rod 3 passes through the first through hole 21 and is threadedly connected to the fixed screw hole 11. Through the threaded connection method, the connection between the tension rod 3 and the disc fixture 1 is firm, and it can withstand a large pulling force, ensuring that it will not become loose or fall off during the bearing disassembly process.
[0038] Referring to Figures 3 to 5 , in this embodiment, the disc fixture 1 includes a first fixture 12 and a second fixture 13. Three fixed screw holes 11 are respectively provided on the first fixture 12 and the second fixture 13. The first fixture 12 and the second fixture 13 are connected by fastening bolts. In this embodiment, the fastening bolts are hex socket head cap screws. The inner walls of the first fixture 12 and the second fixture 13 can fit with the outer ring of the bearing. By screwing the hex socket head cap screws, the inner walls of the first fixture 12 and the second fixture 13 can be tightened or loosened against the outer ring of the bearing.
[0039] The disc fixture 1 is formed by the first fixture 12 and the second fixture 13 jointly enclosing a clamping space for clamping the outer ring of the bearing. The first fixture 12 and the second fixture 13 are connected by internal hexagonal bolts, and the inner walls of the two can fit with the outer ring of the bearing, ensuring that the pressure can be evenly distributed during the clamping process and preventing damage to the outer ring of the bearing during the clamping process, thereby protecting the integrity and service life of the bearing. By screwing the internal hexagonal bolt, the inner walls of the first fixture 12 and the second fixture 13 can be tightened against the outer ring of the bearing, ensuring that the bearing will not loosen or fall off during the disassembly process.
[0040] Further, two first slits 121 are defined on the first fixture 12. The first slit 121 has a first section 1211. The first fixture 12 and the second fixture 13 jointly define two first screw holes 14. The two first screw holes 14 respectively penetrate the end faces of the two connection parts of the first fixture 12 and the second fixture 13, and the openings of the two first screw holes 14 are respectively located on the two first sections 1211. The internal hexagonal bolt is threadedly connected to the first screw hole 14. Further, the first slit 121 has a first operation surface 1212 that is V-shaped with respect to the first section 1211. The projection of the first operation surface 1212 on the first section 1211 does not overlap with the first screw hole 14. Thus, sufficient screwing space is provided for screwing tools such as a knob wrench.
[0041] The first slit 121 not only provides an opening position for the first screw hole 14 but also provides a screwing space for the internal hexagonal bolt. When the disc fixture 1 is in use, first align the first fixture 12 and the second fixture 13 so that the two first screw holes 14 are aligned. Then, insert the internal hexagonal bolt into the first screw hole 14 and initially tighten it to preliminarily connect the first fixture 12 and the second fixture 13. At this time, there should be a certain degree of looseness between the fixtures for subsequent sleeving on the outer ring of the bearing. Next, sleeved the preliminarily connected first fixture 12 and the second fixture 13 on the outer ring of the bearing to be disassembled, and tighten the internal hexagonal bolt to make the first fixture 12 and the second fixture 13 clamp the outer ring of the bearing tightly. By adjusting the tightening degree of the internal hexagonal bolt, the clamping force of the first fixture 12 and the second fixture 13 on the bearing can be controlled.
[0042] Embodiment Three:
[0043] Based on the same inventive concept as Embodiment Two, refer to Figures 6 to 8, the difference between this example and the second embodiment is that in this embodiment, second slits 122 and third slits 131 are respectively defined on the first fixture 12 and the second fixture 13. The second slit 122 has a second cross-section 1221, and the third slit 131 has a third cross-section 1311. The first fixture 12 and the second fixture 13 jointly define a second screw hole 15, and the first fixture 12 and the second fixture 13 jointly define a third screw hole 16. The second screw hole 15 and the third screw hole 16 respectively penetrate through the end faces of the two connection parts of the first fixture 12 and the second fixture 13. The opening of the third screw hole 16 is located on the third cross-section 1311, and the opening of the second screw hole 15 is located on the second cross-section 1221.
[0044] In this embodiment, through the cooperation of the fastening bolts with the second screw hole 15 and the third screw hole 16, the connection between the first fixture 12 and the second fixture 13 can also be achieved.
[0045] The above are only the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present disclosure / the present application, several improvements and deformations can still be made, and these improvements and deformations should also be regarded as the protection scope of the present disclosure / the present application.
Claims
1. A special tool for disassembling the bearings of a liquid oxygen pump motor, characterized in that Comprising: A disc fixture (1) for clamping the outer ring of a bearing; A disc fixing plate (2) axially defining at least two first through holes (21), and defining a second through hole (22) at the axis of the disc fixing plate (2) to be adapted to accommodate a nut at the end of the shaft of a liquid oxygen pump motor; A tension rod (3) one end of which can pass through the first through hole (21) and is detachably axially arranged on the disc fixture (1); A tension nut (4) threadedly connected to the tension rod (3), and the tension nut (4) is located on the side of the disc fixing plate (2) away from the disc fixture (1).
2. The special tool for disassembling the bearing of the liquid oxygen pump motor according to claim 1, wherein The disc fixture (1) axially defines a fixing screw hole (11) corresponding to the first through hole (21), and one end of the tension rod (3) passes through the first through hole (21) and is threadedly connected to the fixing screw hole (11).
3. The special tool for disassembling the bearings of the liquid oxygen pump motor according to claim 1, characterized in that, The disc fixture (1) includes a first fixture (12) and a second fixture (13), the first fixture (12) and the second fixture (13) are connected by a fastening bolt, and the inner walls of the first fixture (12) and the second fixture (13) can fit with the outer ring of the bearing, and by screwing the fastening bolt, the inner walls of the first fixture (12) and the second fixture (13) can press or release the outer ring of the bearing.
4. The special tool for disassembling the bearing of the liquid oxygen pump motor according to claim 3, wherein, Two first cuts (121) are defined on the first fixture (12), the first cut (121) has a first section (1211), the first fixture (12) and the second fixture (13) jointly define two first screw holes (14), the two first screw holes (14) respectively penetrate the end faces of the two connection parts of the first fixture (12) and the second fixture (13), and the openings of the two first screw holes (14) are respectively located on the two first sections (1211), and the fastening bolt is threadedly connected to the first screw hole (14).
5. The special tool for disassembling the liquid oxygen pump motor bearing according to claim 3, characterized in that, A second cut (122) and a third cut (131) are respectively defined on the first fixture (12) and the second fixture (13), the second cut (122) has a second section (1221), the third cut (131) has a third section (1311), the first fixture (12) and the second fixture (13) jointly define a second screw hole (15), the first fixture (12) and the second fixture (13) jointly define a third screw hole (16), the second screw hole (15) and the third screw hole (16) respectively penetrate the end faces of the two connection parts of the first fixture (12) and the second fixture (13), the opening of the third screw hole (16) is located on the third section (1311), and the opening of the second screw hole (15) is located on the second section (1221).
6. The special tool for disassembling the bearings of the liquid oxygen pump motor according to claim 4, wherein, The first cut (121) has a first operating surface (1212) arranged in a V shape with the first cross-section (1211), and the projection of the first operating surface (1212) on the first cross-section (1211) does not overlap with the first screw hole (14).
7. The special tool for disassembling the bearing of the liquid oxygen pump motor according to claim 2, characterized in that, Three fixing screw holes (11) are respectively provided on the first clamp (12) and the second clamp (13).
8. The special tool for disassembling the bearing of the liquid oxygen pump motor according to claim 2, characterized in that, The inner diameter of the first through hole (21) is larger than the inner diameter of the fixing screw hole (11).
9. The special tool for disassembling the bearing of the liquid oxygen pump motor according to claim 1, characterized in that, The tension nut (4) is provided with a gasket on one side of the disc fixing plate (2).
10. The special tool for disassembling the liquid oxygen pump motor bearing according to claim 3, wherein, The fastening bolt is an internal hexagonal bolt.