CN219255480U

CN219255480U - Tool for bearing of centrifugal pump

Info

Publication number: CN219255480U
Application number: CN202320051134.0U
Authority: CN
Inventors: 何有岗; 杨世伟; 康钰海; 祖亚宁; 于明; 白雄
Original assignee: Shaanxi Yanchang Petroleum Group Co Ltd
Current assignee: Shaanxi Yanchang Petroleum Group Co Ltd
Priority date: 2023-01-09
Filing date: 2023-01-09
Publication date: 2023-06-27
Anticipated expiration: 2033-01-09

Abstract

The utility model relates to a centrifugal pump bearing tool, which comprises a dummy shaft, a bearing and an impact unit, wherein one end of the dummy shaft is in interference fit with the bearing, the other end of the dummy shaft is connected with the impact unit, the impact unit comprises a guide rod and an inertial gravity hammer for adjusting a bearing gap, and the inertial gravity hammer is sleeved on the guide rod and can freely slide along the guide rod in the length direction of the guide rod. According to the utility model, through the up-and-down rapid movement of the inertial gravity hammer, the stress disc is impacted, and the fit clearance between the bearing and the bearing sleeve is adjusted, so that the ideal fit degree is achieved, the maintenance time of returning the equipment to a factory is reduced, and the maintenance cost is saved.

Description

Tool for bearing of centrifugal pump

Technical Field

The utility model belongs to the field of mechanical equipment tools, and particularly relates to a centrifugal pump bearing tool.

Background

The bearing is an important part in modern mechanical equipment, and the bearing part is an important device for bearing static and dynamic loads, axial forces and additional dynamic loads generated during the operation of the centrifugal pump, and the reliability of the bearing part directly influences whether the centrifugal pump can normally operate. The pump shaft is arranged in the existing bearing, the bearing gland is arranged on the box body outside the bearing, the oil filling hole and the oil level gauge are arranged on the box body, a proper amount of lubricating oil is added into the bearing box through the oil filling hole, when the shaft parts rotate, the bearing drives the lubricating oil to rotate, the lubricating area of the bearing is small due to the fact that the dead weight and the centrifugal force of the oil are small, the lubricating effect is poor, the lubricating oil only contacts with the bearing in a small area, the cooling effect on the bearing is poor, and the service life of the bearing is short.

After the centrifugal pump bearing is damaged, a new bearing and a bearing sleeve fit clearance are required to be adjusted by returning to a factory, so that the maintenance time is long and the maintenance cost is high.

Disclosure of Invention

The utility model aims to provide a centrifugal pump bearing tool which can ensure that the fit clearance between a bearing and a bearing sleeve is not more than 0.03mm, reduce the maintenance time of equipment returning to factories and save the maintenance cost.

In order to achieve the above purpose, the utility model provides a tool for bearing of a centrifugal pump, which comprises a dummy shaft, a bearing and an impact unit, wherein one end of the dummy shaft is wedged into the bearing in an interference fit manner, the other end of the dummy shaft is connected with the impact unit, the impact unit comprises a guide rod and an inertial gravity hammer for adjusting a bearing clearance, and the inertial gravity hammer is sleeved on the guide rod and can freely slide along the guide rod in the length direction of the guide rod.

Preferably, one end of the guide rod is connected with the upper stress disc, and the other end of the guide rod is connected with the dummy shaft.

Preferably, the upper stress disc is welded at the upper end of the guide rod, and the dummy shaft is welded at the lower end of the guide rod.

Preferably, the inertial gravity hammer is a cylindrical iron block, and a through hole for the guide rod to pass through is formed in the center of the cylindrical iron block.

Optionally, the centrifugal pump bearing tooling tool further comprises a driving unit, wherein the driving unit comprises a servo motor, and the servo motor is connected with the inertial gravity hammer through a connector.

Preferably, the servo motor is mounted on an upper force disc.

Optionally, the centrifugal pump bearing tool further comprises a driving cylinder, wherein the driving cylinder comprises a cylinder body and an output piston rod, the cylinder body is fixed on the upper stress disc, and the output piston rod is fixedly connected to the inertial gravity hammer.

Due to the adoption of the technical scheme, the utility model has the following beneficial effects:

1. the bearing tool of the centrifugal pump provided by the utility model can quickly move up and down through the inertial gravity hammer to strike the bearing disc, and adjust the fit clearance between the bearing and the bearing sleeve, so that the ideal fit degree is achieved, the maintenance time of returning the equipment to a factory is reduced, and the maintenance cost is saved.

2. The centrifugal pump bearing tool makes the fit clearance between the bearing and the bearing sleeve not more than 0.03mm, reduces the maintenance time of equipment returning to factories, and saves maintenance cost.

The foregoing description is only an overview of the technical solution of the present utility model, and in order to make the technical means of the present utility model more clearly understood, it can be implemented according to the content of the specification, and the following detailed description of the preferred embodiments of the present utility model will be given with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are required to be used in the embodiments are briefly described below, and it is apparent that the drawings are intended to provide a further understanding of the present utility model and form a part of the specification, together with the following detailed description, serve to explain the present utility model, but not to limit the present utility model. In the drawings:

fig. 1 is a schematic structural diagram of a centrifugal pump bearing tooling tool.

Reference numerals illustrate:

1. a force-bearing plate is arranged on the upper part;

2. a sliding guide rod;

3. inertial gravity hammer;

4. a dummy shaft;

5. and (3) a bearing.

Detailed Description

The disclosure of the present utility model will be further understood in conjunction with the following detailed description of the preferred embodiments of the utility model, including examples. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. If the definition of a particular term disclosed in the prior art is inconsistent with any definition provided in the present utility model, the definition of the term provided in the present utility model controls.

The utility model provides a centrifugal pump bearing frock instrument, includes dummy shaft 4, bearing 5 and striking unit, and in the bearing 5 was wedged in the interference fit of one end of dummy shaft 4, the striking unit was connected to the other end of dummy shaft 4, and the striking unit includes guide arm 2 and the inertial gravity hammer 3 that is used for adjusting the bearing clearance, and inertial gravity hammer 3 cover is established on guide arm 2 to can freely slide along guide arm 2 in its length direction.

It should be noted that, the dummy shaft 4 is an old bearing of the disassembling machine, and the structure of the dummy shaft 4 is the same as that of the prior art, and will not be described herein.

In order to further optimize the tool for the centrifugal pump bearing and perfect the functions, the utility model also carries out the following structural design that one end of a guide rod 2 is connected with a stress disc 1, and the other end of the guide rod 2 is connected with a dummy shaft 4. Specifically, the upper stress disc 1 is welded to the upper end of the guide rod 2, and the dummy shaft 4 is welded to the lower end of the guide rod 2. Further, the inertial gravity hammer 3 is a cylindrical iron block, and a through hole for the guide rod 2 to pass through is formed in the center of the cylindrical iron block.

In a preferred embodiment of the utility model, the centrifugal pump bearing tooling tool further comprises a drive unit comprising a servo motor connected to the inertial gravity hammer 3 by a connector. Specifically, the servo motor is mounted on the upper force disc 1.

In another preferred embodiment of the utility model, the centrifugal pump bearing tooling tool further comprises a driving cylinder, wherein the driving cylinder comprises a cylinder body and an output piston rod, the cylinder body is fixed on the upper stress disc 1, and the output piston rod is fixedly connected to the inertial gravity hammer 3.

The driving method is not limited to this, and the inertial weight 3 may be driven to slide freely on the guide bar 2.

When the centrifugal pump bearing tool disclosed by the utility model is particularly used, the upper stress disc is welded at one end of the guide rod and is used for bearing inertia force; specifically, the length of the guide rod is 0.6m, and the diameter is 22mm; the inertial gravity hammer is provided with a 23mm through hole in the center of the cylindrical iron, so that the inertial gravity hammer can freely move on the sliding guide rod; the dummy shaft is welded at the other end of the sliding guide rod, and the dummy shaft boss part is in interference fit with the bearing inner ring so as to prevent the bearing from falling off in the repeated disassembly process; the bearing is an auxiliary mounting bearing with a disc which is empty; the inertial hammer moves up and down rapidly to strike the bearing disc, and the fit clearance between the bearing and the bearing sleeve is adjusted.

The utility model can explain its functional principle by the following modes of operation:

as shown in fig. 1, the bearing cavity is cleaned first; the inner diameter of the bearing sleeve which is installed on the shell at present is accurately measured by utilizing an inner diameter dial indicator before polishing, and the thickness required to be polished is determined so as to prevent the problem of excessive polishing; before polishing the bearing sleeve, uniformly coating red lead powder on the inner wall of the bearing sleeve; the inertial gravity hammer 3 moves up and down on the sliding guide rod 2 rapidly to strike the stress disc 1, and the fit clearance between the bearing and the bearing sleeve is adjusted; the polishing wheel is put into a straight grinder, colored marks are formed, the polishing wheel is polished by a heart, repeated polishing and bearing wedging test are carried out, and finally an ideal assembly effect is achieved.

In summary, the centrifugal pump bearing tool disclosed by the utility model has the advantages that through the up-and-down rapid movement of the inertial gravity hammer, the bearing plate is impacted, the fit clearance between the bearing and the bearing sleeve is adjusted, so that the ideal fit degree is achieved, the maintenance time of returning equipment to a factory is reduced, and the maintenance cost is saved.

The foregoing is merely a preferred embodiment of the present utility model and it should be noted that those skilled in the art may devise numerous other modifications and embodiments of the utility model without departing from the spirit and scope of the inventive concept.

Claims

1. The utility model provides a centrifugal pump bearing frock instrument which characterized in that: the novel anti-collision device comprises a dummy shaft (4), a bearing (5) and a collision unit, wherein one end of the dummy shaft (4) is inserted into the bearing (5) in an interference fit manner, the other end of the dummy shaft (4) is connected with the collision unit, the collision unit comprises a guide rod (2) and an inertial gravity hammer (3) for adjusting a bearing gap, and the inertial gravity hammer (3) is sleeved on the guide rod (2) and can freely slide along the guide rod (2) in the length direction.

2. A centrifugal pump bearing tooling tool as set forth in claim 1, wherein: one end of the guide rod (2) is connected with the upper stress disc (1), and the other end of the guide rod (2) is connected with the dummy shaft (4).

3. A centrifugal pump bearing tooling tool as set forth in claim 2, wherein: the upper stress disc (1) is welded at the upper end of the guide rod (2), and the dummy shaft (4) is welded at the lower end of the guide rod (2).

4. A centrifugal pump bearing tooling tool as set forth in claim 1, wherein: the inertial gravity hammer (3) is a cylindrical iron block, and a through hole for the guide rod (2) to pass through is formed in the center of the cylindrical iron block.

5. A centrifugal pump bearing tooling tool as set forth in claim 2, wherein: the centrifugal pump bearing tool also comprises a driving unit, wherein the driving unit comprises a servo motor, and the servo motor is connected with the inertial gravity hammer (3) through a connector.

6. A centrifugal pump bearing tooling tool as set forth in claim 5, wherein: the servo motor is arranged on the upper stress disc (1).

7. A centrifugal pump bearing tooling tool as set forth in claim 2, wherein: the centrifugal pump bearing tool also comprises a driving cylinder, wherein the driving cylinder comprises a cylinder body and an output piston rod, the cylinder body is fixed on the upper stress disc (1), and the output piston rod is fixedly connected to the inertial gravity hammer (3).