CN112192511A

CN112192511A - Embedded bearing dismounting device

Info

Publication number: CN112192511A
Application number: CN202011127789.9A
Authority: CN
Inventors: 郑楠; 叶学民; 李春曦
Original assignee: North China Electric Power University
Current assignee: North China Electric Power University
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2021-01-08

Abstract

The invention discloses an embedded bearing dismounting device which is used for solving the problem that a bearing is difficult to dismount after the bearing which is embedded and installed in the prior art is damaged. The dismounting device comprises a dismounting structure for dismounting the bearing, the dismounting structure at least comprises two dismounting plates which are in direct contact with the bearing and two connecting plates which are connected with the movable dismounting plates, and the transverse distance between the dismounting plates is adjusted according to the diameter of the dismounted bearing so as to be suitable for dismounting the bearings of different models; the tail end clamping pin of the radial adjustable dismounting plate can be matched with the concave part of the bearing retainer by adjusting the included angle; the connecting plate connected with the movable dismounting plate can be adjusted according to the height of the tool, and finally the connecting plate is driven by the driving device to realize bearing dismounting. The invention can be used for disassembling the embedded bearing.

Description

Embedded bearing dismounting device

Technical Field

The invention relates to the technical field of bearing dismounting, in particular to an embedded bearing dismounting device.

Background

With the continuous development of mechanical manufacturing technology, more and more high-end and precise speed reducer equipment adopts embedded bearings. After the bearing is worn and damaged, the bearing is difficult to be detached by adopting a conventional knocking method, a hot detaching method and a pushing method. The embedded bearing retainer cannot be directly touched by a knocking method, so that parts such as a shell body, a main shaft and the like are easily damaged; the embedded bearing is heated by a hot-dismantling method, so that the shaft expands along with the expansion of the bearing, and the embedded bearing is not easy to dismantle. The pushing method adopts a press machine to extrude the bearing, so that the bearing is uniformly stressed, the loss is less, and the cost is higher.

Because the disassembly space of the embedded bearing is limited, the commonly used three-claw puller can only act on the outer ring of the bearing, the thickness of the claws is too large, the claws of the puller cannot find good force points, and the embedded bearing is difficult to disassemble, time-consuming and labor-consuming.

The present invention has been made in view of this situation.

Disclosure of Invention

In view of the above analysis, the present application aims to provide an embedded bearing dismounting device, which can solve the following technical problems: (1) the existing embedded bearing is difficult to disassemble, time-consuming and labor-consuming; (2) the disassembly cost is high, and the machine shell body is easy to damage.

The purpose of the application is mainly realized by the following technical scheme:

the application provides an embedded bearing dismounting device, dismounting device include with the adjustable stripper plate of bearing contact and set up the connecting plate of slide.

Furthermore, the transverse distance of the dismounting plate is adjusted according to the diameter of the dismounted bearing, and the clamping pin at the tail end of the dismounting plate can be matched with the concave part of the bearing retainer by adjusting the included angle.

Furthermore, the movable connecting plate is connected with the disassembling plate to form a closed frame, and the connecting plate provides disassembling power for the tail end clamping pin through the disassembling plate.

Furthermore, the clamping pin at the tail end of the disassembling plate is tightly matched with the concave part of the retainer by adjusting an included angle between the clamping pin and the bearing retainer.

Furthermore, a plurality of circular matching holes are arranged on the parallel disassembling plate, and proper matching holes are properly selected according to the length of the shaft and the height of the driving mechanism.

Furthermore, the disassembly plate, the parallel connection plate and the matching hole are in limited fixed parallel connection through bolts.

Furthermore, the embedded bearing dismounting device also comprises a driving mechanism and a force transmission mechanism, wherein the driving mechanism comprises a jack, and the jack is arranged between the shaft head and the force transmission mechanism; the force transmission mechanism comprises an adjusting cushion block for compensating the height of the jack, and is arranged between the top of the driving mechanism and the connecting plate.

Another object of the present application is to provide a method for disassembling an in-line bearing, comprising the following steps

Firstly, adjusting the distance between the disassembly plates according to the diameter of the bearing to enable the parallel disassembly plates to be parallel and enable the clamping pins to be tightly attached to the inner side of the bearing retainer;

and step two, selecting a matching hole, and fixing the connecting plate and the disassembling plate by using bolts.

And step three, the assembling bearing dismounting device is a rectangular frame, and the jack is placed between the shaft head and the connecting plate.

And step four, applying pressure by using a jack, and slowly disassembling the bearing.

Further, the step one of fixing and detaching the plate clamping pin comprises the following steps

Inserting the needle end of the dismounting board card between the inner ring and the outer ring of the bearing, and adjusting the up-down position; rotate clockwise until the clamp pin clings to the inner side of the bearing retainer.

Further, the assembling and disassembling device for the bearing in the third step comprises the following steps

The connecting plates are parallelly placed on two sides of the matching holes at the same height of the disassembling plate, and the connecting plates are fixed through bolts to form a rectangular frame.

Compared with the prior art, the application can realize the following beneficial effects:

(a) the bearing dismounting device is suitable for dismounting embedded bearings of various sizes, and is simple to operate;

(b) the structure is simple, the manufacturing cost is low, and the bearing can be customized on site according to the size of the bearing;

(c) the embedded bearing is simply and quickly dismantled, and manpower and material resources are saved.

Drawings

FIG. 1 is a perspective view of a bearing removing device according to the present invention

FIG. 2 is a schematic structural diagram of a bearing dismounting device according to the present invention;

FIG. 3 is a schematic structural view of a dismounting plate of the dismounting structure of the bearing dismounting device according to the present invention;

FIG. 4 is a schematic structural view of a connecting plate of the bearing detaching device according to the present invention;

reference numerals:

1-disassembling the plate; 2, disassembling the clamping pin at the tail end of the plate; 3-connecting the plates; 4, adjusting a cushion block; 5-a drive mechanism; 6-a bearing; 7-a main shaft; 8-a housing body; 9-connecting bolts; 10-mating holes.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

The invention designs an embedded bearing dismounting device as shown in figure 1, and the dismounting device for dismounting a bearing 6 consists of five parts, namely a dismounting plate 1, a connecting plate 3, an adjusting cushion block 4, a driving mechanism 5 and a connecting bolt 9. Wherein the driving mechanism provides power for the dismounting device through the connecting plate and the dismounting plate.

Among the above, in recent years, the speed reducer of the desulfurization stirrer in the power plant is being increased in speed and integrated, and the bearing 6 used is more and more an embedded bearing. In the maintenance and overhaul process of the speed reducer, the bearing is disassembled, so that the time and labor are consumed. In a desulfurization stirrer speed reducer, a large embedded bearing 6 is often used, and due to factors such as slurry leakage of a desulfurization absorption tower, equipment corrosion and the like, slurry permeates into a bearing chamber of the speed reducer, lubricating oil is deteriorated, the bearing is not lubricated in place, and further the bearing is tightly matched with a shell and a main shaft, and the interference force is large. The conventional three-jaw puller dismounting device for the bearing is not suitable for dismounting the embedded bearing 6 because the jaw hook is too thick and too wide and cannot touch the inner ring and the outer ring of the bearing.

The application provides a dismounting device of an embedded bearing 6, wherein a clamping pin of a dismounting plate 1 is tightly contacted with an inner groove of the embedded bearing 6 to provide dismounting power for the embedded bearing 6; connecting plate 3 links to each other with dismantlement board 1 through the bolt, and connecting plate 3 provides the dismantlement power for dismantling board 1, and dismantlement board 1 provides the power of dismantling it from casing, main shaft for embedded bearing 6. The relative position between the two parallel dismounting plates 1 can be adjusted according to the diameter of the bearing 6, and the dismounting device is suitable for dismounting embedded bearings 6 with different diameters.

Furthermore, when the two disassembly plates 1 are used for disassembling the bearing, the clamping needle ends of the disassembly plates 1 are inserted between the inner ring and the outer ring of the bearing 6, so that the clamping needle ends do not contact with bearing balls, and the disassembly plates 1 are rotated to enable the two disassembly plates to be in parallel positions, so that the two disassembly plates are in good contact with the inner side of a retainer of the bearing 6. The dismounting device comprises an adjustable dismounting plate 3 and a slide way type connecting plate 1, wherein the dismounting plate 1 and the connecting plate 3 are fixed through bolts to form a closed rectangular frame.

Furthermore, the dismounting device also comprises a driving mechanism 5, wherein the driving mechanism 5 is a frame consisting of the dismounting plate 1 and the connecting plate 3 and provides dismounting power for dismounting the embedded bearing 6 from the main shaft and the machine shell.

In the above scheme, the adjustable connection between the detaching plate 3 and the slideway type connecting plate 1 adjusts the relative position of the matching hole 10 between the connecting plate 3 and the detaching plate 1 as required to form a closed type fixing frame, and the purpose is to fix the detaching plate 1 in the detaching process, so as to prevent the problems of uneven stress, jamming of the bearing 6, failure in detaching and the like caused by the deflection or position change of the detaching plate 1.

Furthermore, the power mechanism 5 comprises a jack, the jack is arranged between the connecting plate 3 and the shaft head, and an adjusting cushion block 4 is arranged between the connecting plate 3 and the jack disc to compensate the height of the jack.

In the above scheme, the jack makes the connecting plate move to the outside through adjusting cushion block 4 to connecting plate 3 application of force to drive stripper plate 1 to the motion of spindle nose outside, stripper plate 1 and embedded bearing 6 contact, make bearing 6 follow connecting plate 3 and remove to the outside direction of spindle nose under the effect of the power of dismantling, break away from casing and main shaft.

Further, when relying on the jack single stroke probably can't dismantle embedded bearing 6 get off, need change jack offset pad 4 and compensate the jack height, or gradually inboard adjustment connecting plate 3 and the change of dismantling the cooperation position between board 1 in order to adapt to the jack height.

Claims

1. An embedded bearing dismounting device is characterized by comprising

The dismounting device comprises two parallel dismounting plates (1) and two parallel connecting plates (3). The transverse distance of the disassembly plate is adjusted according to the diameter of the disassembled bearing, and the clamping pin (2) at the tail end of the disassembly plate can be matched with the concave part of the bearing retainer by adjusting the included angle; the surface of the connecting plate (3) is provided with a slideway.

2. An in-line bearing disassembling device according to claim 1, characterized in that the disassembling plate (1) and the connecting plate (3) are fixedly connected by bolts to form a closed and stable frame. The connecting plate (3) provides disassembly power for the tail end clamping pin (2) through the disassembly plate (1).

3. An in-line bearing dismantling device as claimed in claim 2 and characterised in that the removable dismantling plate (1) is adapted to be connected to the connection plate (3) according to the size of the bearing diameter.

4. The embedded bearing dismounting device according to claim 2, characterized in that the clamping pins (2) at the end of the dismounting plate can be adjusted to form an included angle with the bearing retainer (6) to ensure that the concave part of the retainer is tightly fitted.

5. An in-line bearing removal device as claimed in claim 2, wherein the removal plate (1) is provided with a plurality of circular mating holes (10).

6. An embedded bearing dismounting device according to claim 2, characterized in that the parallel connection plates (3) are suitably selected from the matching holes (10) according to the length of the main shaft (7) and the height of the driving mechanism (5), and the dismounting plate (1), the parallel connection plates (3) and the matching holes (10) are in limited fixed parallel connection through bolts (9).

7. An in-line bearing removal device according to claims 1-5, further comprising a drive mechanism (5) and a force transfer mechanism (4).

8. An in-line bearing removal device according to claim 6, characterised in that the drive means (5) comprises a jack, which is arranged between the head of the shaft and the force-transmitting means (4); the force transmission mechanism (4) comprises an adjusting cushion block for compensating the height of the jack, and the force transmission mechanism (4) is arranged between the top of the driving mechanism (5) and the connecting plate (3).