Rolling bearing prosthesis
By using rolling bearing prosthesis in rotating machinery, the problems of component wear and inefficiency during measurement and commissioning are solved, and a more efficient disassembly and assembly and measurement process is achieved.
Patent Information
- Application Number
- CN202421560237.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-07-03
AI Technical Summary
During the measurement and commissioning of rotating machinery, the prior art has problems of friction and wear on the fitting surface of the component, damage to the bearing chamber, shaft journal and inefficiency.
A rolling bearing prosthesis is provided, including a prosthetic body and a pulling member. The prosthetic body is arranged in the bearing chamber of the target rotating machine for temporarily replacing the solid rolling bearing and reducing unnecessary wear.
By using rolling bearing prosthesis, wear between the bearing and the inner wall and journal of the bearing chamber is effectively avoided, measurement and commissioning efficiency is improved, and manpower and time consumption is reduced.
Smart Images
Figure CN222633663U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rotating machinery debugging, in particular to a rolling bearing prosthesis. Background Art
[0002] Rolling bearings are widely used in various rotating machinery, and horizontal double-suction pumps are one of them. The free end of this type of rotating machinery relies on adjusting the axial relative position of the two angular contact rolling bearings installed back to back (or face to face) in the bearing chamber to ensure the center of the water pump outlet and bear the axial force generated when the water pump is running. For this reason, during installation and maintenance, it is necessary to measure and adjust the technical data such as the total string, half string, and working clearance of the water pump until they meet the standard requirements. In the process of adjustment and measurement, the existing technology uses the installation of physical bearings. When measuring data, it is necessary to apply a large axial force at both ends of the shaft to achieve the axial movement of the bearing in the bearing chamber; when adjustment is required, it is inevitable to disassemble and reassemble the various components of the bearing chamber by mechanical pulling and manual knocking.
[0003] During the adjustment and measurement process, since the outer ring of the bearing and the inner wall of the bearing chamber, and the inner ring of the bearing and the journal are closely matched, the prior art has the following three defects:
[0004] (1) The mating surfaces of the components inevitably rub against each other, causing wear;
[0005] (2) It may cause damage to the bearing chamber, journal, and bearing;
[0006] (3) Inefficient, time-consuming and labor-intensive.
[0007] The more times data is measured and adjusted, the more severe the wear between the mating surfaces of the components will be, the greater the chance of damage to the bearing chamber, journal, and bearing, and the more time and manpower will be consumed. Utility Model Content
[0008] The purpose of the present utility model is to provide a rolling bearing prosthesis in order to solve at least one of the above technical problems.
[0009] In the first aspect, an embodiment of the utility model provides a rolling bearing prosthesis, comprising: a prosthesis body and a pulling piece; the prosthesis body is arranged in the bearing chamber of the target rotating machinery and installed at the position of the rolling bearing to be replaced; the prosthesis body is a hollow cylindrical structure; the thickness of the prosthesis body is consistent with the thickness of the rolling bearing to be replaced, the inner diameter of the prosthesis body is not less than the shaft neck diameter of the target rotating machinery, and the outer diameter of the prosthesis body is not greater than the outer ring diameter of the rolling bearing to be replaced; one end of the pulling piece is a screw structure, and a screw hole is arranged on one side end face of the prosthesis body, and the screw structure and the screw hole are threadedly matched.
[0010] Furthermore, the prosthesis body is made of hard material.
[0011] Furthermore, the material of the prosthesis body is ductile iron.
[0012] Furthermore, the end surface of the prosthesis body is perpendicular to the axial center lines of the inner ring and the outer ring thereof.
[0013] Furthermore, the inner ring center line and the outer ring axial center line of the prosthesis body are kept in line.
[0014] Furthermore, the inner diameter of the prosthesis body is one thousandth larger than the journal diameter of the target rotating machine; and the outer diameter of the prosthesis body is one thousandth smaller than the outer ring diameter of the rolling bearing to be replaced.
[0015] Furthermore, the other end of the pulling member is a pull ring structure.
[0016] Furthermore, two screw holes are symmetrically arranged on one end surface of the prosthesis body, and the number of the pulling members is two.
[0017] The utility model provides a rolling bearing prosthesis, which is used when a rotating machine needs to be measured and debugged, so as to temporarily replace a solid rolling bearing, thereby effectively avoiding unnecessary wear between the rolling bearing and the inner wall of the bearing chamber and the shaft neck; after the measurement and debugging are qualified, the rolling bearing prosthesis is removed and the solid rolling bearing is installed; the wear between the matching surfaces of the components and the technical problems that the bearing chamber, the shaft neck and the bearing may be damaged during the measurement and adjustment process are effectively reduced, and the disassembly and assembly are convenient, saving time and labor. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0019] Figure 1 A schematic structural diagram of a rolling bearing prosthesis provided in an embodiment of the utility model;
[0020] Figure 2 A schematic diagram of the installation position of a bearing prosthesis provided in an embodiment of the utility model;
[0021] Figure 3 A schematic diagram of the disassembly and assembly of a rolling bearing prosthesis provided in an embodiment of the utility model.
[0022] In the figure: 1. prosthesis body, 2. drawing piece, 3. bearing chamber, 4. journal, 5. screw hole. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] Figure 1 Schematic diagram of the structure of a rolling bearing prosthesis provided according to an embodiment of the utility model. Figure 1 As shown, it includes: a prosthesis body 1 and a pulling piece 2. Figure 2 Schematic diagram of the installation position of a bearing prosthesis provided according to an embodiment of the utility model. Figure 2 As shown, the prosthesis body 1 is arranged in the bearing chamber 3 of the target rotating machine and installed at the position of the rolling bearing to be replaced. Specifically, the prosthesis body 1 is sleeved on the journal 4 of the target rotating machine.
[0025] like Figure 1 and Figure 2 As shown, the prosthesis body 1 has a hollow cylindrical structure; the thickness of the prosthesis body 1 is consistent with the thickness of the rolling bearing to be replaced, the inner diameter of the prosthesis body 1 is not less than the journal diameter of the target rotating machinery, and the outer diameter of the prosthesis body 1 is not greater than the outer ring diameter of the rolling bearing to be replaced.
[0026] Specifically, the thickness of the prosthesis body 1 is consistent with the overall thickness of two rolling bearings (i.e., rolling bearings to be replaced) installed back to back (or face to face), with an error of ≤0.02mm; thus, no measurement error will occur during measurement and adjustment during replacement.
[0027] Preferably, the inner diameter of the prosthesis body 1 is one thousandth larger than the shaft neck diameter of the target rotating machinery; that is, the inner diameter of the prosthesis body 1 is 100.1% of the shaft neck diameter. In this way, the prosthesis body 1 and the shaft neck 4 are clearance-fitted, which facilitates disassembly and assembly, and effectively avoids strain and wear on the shaft neck 4.
[0028] Preferably, the outer diameter of the prosthesis body 1 is one thousandth smaller than the outer ring diameter of the rolling bearing to be replaced; that is, the outer diameter of the prosthesis body 1 is 99.9% of the outer ring diameter of the rolling bearing to be replaced. In this way, there is a clearance fit between the prosthesis body 1 and the inner wall of the bearing chamber 3, which facilitates disassembly and assembly, and effectively avoids strain and wear on the inner wall of the bearing chamber 3.
[0029] Preferably, the inner circle centerline and outer circle centerline of the prosthesis body 1 are consistent, and the end surface of the prosthesis body 1 is perpendicular to the axial centerline of the inner circle and outer circle thereof to ensure measurement accuracy.
[0030] Preferably, the material of the prosthesis body 1 is a hard material; further preferably, the material of the prosthesis body is ductile iron. Hard materials are incompressible at room temperature and can ensure measurement accuracy.
[0031] Specifically, Figure 1 As shown, one end of the pulling member 2 is a screw structure, and a screw hole 5 is arranged on one end surface of the prosthesis body 1 , and the screw structure and the screw hole 5 are thread-matched.
[0032] Preferably, if Figure 1 As shown, the other end of the pulling member 2 is a pull ring structure, which is convenient for pulling the prosthesis body 1 out of the bearing chamber 3.
[0033] Preferably, if Figure 1 As shown, two screw holes 5 are symmetrically arranged on one end surface of the prosthesis body 1, and the number of the pulling members 2 is two.
[0034] Figure 3 It is a schematic diagram of disassembly and assembly of a rolling bearing prosthesis provided according to an embodiment of the utility model.
[0035] like Figure 3 As shown, the disassembly and assembly process of a rolling bearing prosthesis provided by an embodiment of the utility model is as follows:
[0036] When it is necessary to measure and adjust technical data such as total string, half string, working clearance, etc. of a rotating machine (such as a horizontal double-suction pump), the puller 2 is connected to the prosthesis body 1 through the screw hole 5, and then the prosthesis body 1 is installed to the corresponding position in the bearing chamber 3 of the rotating machine by pushing the puller 2, and the puller 2 is removed by rotating the puller 2, and the prosthesis body 1 is used to temporarily replace the physical rolling bearing for measurement and adjustment; after all technical data are adjusted to be qualified, the puller 2 is rotated and installed on the screw hole 5 of the prosthesis body 1, and the prosthesis body 1 is pulled out of the bearing chamber 3 by pulling the puller 2, and finally the physical rolling bearing is installed, all in one go, which effectively reduces the wear of the mating surfaces of the components and the possible damage to the bearing chamber, shaft neck, and bearing during the measurement and adjustment process, and saves time and effort.
[0037] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
[0038] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A rolling bearing prosthesis, characterized in that: include: A prosthesis body and a pulling member; the prosthesis body is arranged in a bearing chamber of a target rotating machine and installed at the position of the rolling bearing to be replaced; The prosthesis body is a hollow cylindrical structure; the thickness of the prosthesis body is consistent with the thickness of the rolling bearing to be replaced, the inner diameter of the prosthesis body is not less than the journal diameter of the target rotating machinery, and the outer diameter of the prosthesis body is not greater than the outer ring diameter of the rolling bearing to be replaced; One end of the pulling piece is a screw structure, and a screw hole is arranged on one end surface of the prosthesis body, and threads of the screw structure and the screw hole are matched.
2. The rolling bearing prosthesis according to claim 1, characterized in that: The material of the prosthesis body is hard material.
3. The rolling bearing prosthesis according to claim 1, characterized in that: The material of the prosthesis body is ductile iron.
4. The rolling bearing prosthesis according to claim 1, characterized in that: The end surface of the prosthesis body is perpendicular to the axial center lines of the inner ring and the outer ring thereof.
5. The rolling bearing prosthesis according to claim 1, characterized in that: The axial center lines of the inner and outer rings of the prosthesis body remain aligned.
6. The rolling bearing prosthesis according to claim 1, characterized in that: The inner diameter of the prosthesis body is one thousandth larger than the journal diameter of the target rotating machine; the outer diameter of the prosthesis body is one thousandth smaller than the outer ring diameter of the rolling bearing to be replaced.
7. The rolling bearing prosthesis according to claim 1, characterized in that: The other end of the pulling piece is a pull ring structure.
8. The rolling bearing prosthesis according to claim 1, characterized in that: Two screw holes are symmetrically arranged on one end surface of the prosthesis body, and the number of the pulling pieces is two.