CN219818710U - Dismounting device for cylindrical roller bearing without outer ring of gearbox output shaft - Google Patents

Abstract

The utility model discloses a dismounting device for a cylindrical roller bearing without an outer ring of a gearbox output shaft. The connecting piece is screwed up, the front end of the connecting piece is propped against the shaft head of the output shaft, the downward movement of the connecting piece is converted into the upward movement of the shell, the shell transmits the tensile force to the conical drag hook through the connecting piece, the fan-shaped acting surface of the conical drag hook supports the bearing retainer to move upwards, the bearing is disassembled, the stress mode of the retainer in the disassembling process is improved, and the probability of damaging the bearing retainer in the disassembling process is reduced. The bearing is always positioned in the protective shell in the disassembling process, so that the possibility of hurting people due to flying out of the bearing roller is avoided.

Description

Dismounting device for cylindrical roller bearing without outer ring of gearbox output shaft

Technical Field

The utility model belongs to the technical field of machining auxiliary tools, and relates to a dismounting device for a cylindrical roller bearing without an outer ring of an output shaft of a gearbox.

Background

The whole gearbox test is an important part of the continuous improvement and optimization process of products, and in the process of testing the gearbox, the gearbox is usually required to be frequently disassembled to observe and check the states of parts or replace the parts, so that the high efficiency and safety of the disassembly process of the gearbox are particularly important.

For the cylindrical roller bearing without outer ring at the front and rear ends of the output shaft which is partially equipped in the box shape, partial problems exist when the existing tool is used for disassembling the cylindrical roller bearing. The bearing retainer is easy to damage due to uneven stress in the disassembly process of the existing tool, so that cost is wasted. Meanwhile, as the bearing has no outer ring, after the bearing retainer is damaged, the bearing roller is extremely easy to fly out to cause personnel injury, and great potential safety hazard exists.

Disclosure of Invention

The utility model aims to solve the problems that in the prior art, when a three-grab-pull-horse is utilized for disassembly, a bearing retainer is subjected to the tensile force of three points of a grab hook, a certain stress concentration exists, the retainer is easy to damage, and the bearing is scrapped and cannot be reused, and provides a disassembly device for a cylindrical roller bearing without an outer ring of an output shaft of a gearbox.

In order to achieve the purpose, the utility model is realized by adopting the following technical scheme:

the dismounting device of the cylindrical roller bearing without the outer ring of the gearbox output shaft comprises a screw, a shell, a conical drag hook and a connecting piece;

the shell is a cylindrical shell with one end open, a round hole is formed in the center of the other end, the screw is arranged in the round hole, a plurality of guide rail grooves are uniformly formed in the periphery of the round hole along the radial direction, conical draw hooks with the corresponding number of the guide rail grooves are arranged in the shell, and the connecting piece penetrates through the guide rail grooves to connect the shell and the conical draw hooks; the conical drag hook is characterized in that a cavity is formed in the conical drag hook, a connecting piece is arranged at the upper part of the cavity, and a bearing action surface is arranged at the lower part of the cavity.

The utility model further improves that:

the connecting piece is a screw, and the screw penetrates through the guide rail groove of the shell and is connected with the threaded through hole at the upper part of the conical drag hook cavity in a matched mode.

The conical drag hook is provided with three.

The three conical draw hooks are all 120 degrees.

Three guide rail grooves are formed in the shell, and included angles among the guide rail grooves are set to be 120 degrees.

The bearing action surface is a sector action surface.

The thickness of the bearing acting surface in the conical drag hook is smaller than the distance between the bearing retainer and the shaft head of the output shaft.

The screw rod is connected with the shell in a matched manner through a threaded hole.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model provides a dismounting device for a cylindrical roller bearing without an outer ring of a gearbox output shaft. The connecting piece is screwed up, the front end of the connecting piece is propped against the shaft head of the output shaft, the downward movement of the connecting piece is converted into the upward movement of the shell, the shell transmits the tensile force to the conical drag hook through the connecting piece, the fan-shaped acting surface of the conical drag hook supports the bearing retainer to move upwards, the bearing is disassembled, the stress mode of the retainer in the disassembling process is improved, and the probability of damaging the bearing retainer in the disassembling process is reduced. The bearing is always positioned in the protective shell in the disassembling process, so that the possibility of hurting people due to flying out of the bearing roller is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a three-dimensional cross-sectional view of a disassembled output shaft cylindrical roller bearing without an outer ring of the utility model;

FIG. 2 is a two-dimensional cross-sectional view of a disassembled output shaft cylindrical roller bearing without an outer ring of the utility model;

FIG. 3 is a top view of the transmission output shaft non-outer ring cylindrical roller bearing dismounting device of the utility model;

FIG. 4 is a diagram of a housing structure in accordance with the present utility model;

FIG. 5 is a schematic view of a conical retractor in accordance with the utility model.

Wherein: 1-a screw; 2-screws; 3-a housing; 4-a conical drag hook; 5-the output shaft is free of an outer ring cylindrical roller bearing; 6-an output shaft head.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the embodiments of the present utility model, it should be noted that, if the terms "upper," "lower," "horizontal," "inner," and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the term "horizontal" if present does not mean that the component is required to be absolutely horizontal, but may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The utility model is described in further detail below with reference to the attached drawing figures:

referring to fig. 1-3, the dismounting device for the cylindrical roller bearing without the outer ring of the transmission output shaft comprises a screw 1, a screw 2, a shell 3 and a conical drag hook 4; screw rod 1 cooperates with the screw hole at the center of protection casing 3, and the feed of adjustment screw rod mechanism can drive casing 3 and carry out vertical removal, and then drives the vertical removal of whole dismounting device. The screw 2 is provided with three threaded through holes which penetrate through a guide rail groove of the shell 3 and are matched with the threaded through holes above the conical drag hook 4, and is used for connecting the shell 3 and the conical drag hook 4, and the screw 2 can radially move in the guide rail groove to adjust the relative position of the conical drag hook 4 and the bearing 5; the three conical draw hooks 4 are arranged at the upper part, threaded through holes are formed in the upper part and matched with the screw 2, the screw 2 and a guide rail groove of the shell 3 are used for positioning during installation, the three conical draw hooks are 120 degrees, and a protection cavity and a sector-shaped action surface of 90 degrees are arranged at the lower part of the three conical draw hooks. When the bearing is dismounted, the fan-shaped acting surface is supported below the retainer of the bearing 5, and when the conical drag hook 4 moves upwards, the bearing 5 is pulled to move upwards through the fan-shaped acting surface, so that the purpose of dismounting the bearing is achieved.

Three guide rail grooves with an included angle of 120 DEG are formed in the upper portion of the protective shell body 3, the screw 2 penetrates through the guide rail grooves to be connected with the conical drag hook 4, the radial position of the screw 2 can be adjusted to change the contact position between the fan-shaped acting surface of the conical drag hook 4 and the bearing 5, the shell body 3 is tightly pressed on the conical surface of the conical drag hook 4 when the screw 2 is screwed down, the force of the shell body pressing down is converted into centripetal force of the drag hook by the conical surface of the drag hook, the three drag hooks are gathered radially, and the acting surface of the drag hook is extruded into the gap between the bearing retainer and the shaft head of the output shaft by the centripetal force. Meanwhile, the three conical draw hooks 4 are completely covered by the shell 3, so that the bearing rollers are prevented from flying out.

The specific working process of the utility model is as follows:

firstly, screwing the screw 2 to the looest position, then adjusting the radial position of the screw 2 in the guide rail groove, closing the acting surface of the conical draw hook 4 to the bearing retainer, then screwing the screw 2, pressing the shell 3 on the conical surface of the conical draw hook 4, ensuring that the acting surface of the conical draw hook 4 is supported below the bearing retainer, then screwing the screw 1 to enable the front end of the screw to prop against the shaft head of the output shaft, screwing the screw 1 at the moment, translating the downward movement of the screw 1 into the upward movement of the shell 3, transmitting the tensile force to the conical draw hook 4 through the screw 1, and enabling the sector acting surface of the conical draw hook 4 to prop up the bearing retainer to detach the bearing.

The utility model provides a disassembly device for a cylindrical roller bearing without an outer ring of a gearbox output shaft, which replaces the traditional disassembly mode of adopting a three-grab-pull-horse, can reduce the probability of bearing damage in the disassembly process, and eliminates the potential safety hazard that the bearing roller flies out to hurt people in the disassembly process.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (8)

1. The dismounting device for the cylindrical roller bearing without the outer ring of the transmission output shaft is characterized by comprising a screw (1), a shell (3), a conical drag hook (4) and a connecting piece;

the shell (3) is a cylindrical shell with one end open, a round hole is formed in the center of the other end, the screw (1) is arranged in the round hole, a plurality of guide rail grooves are uniformly formed in the periphery of the round hole along the radial direction, conical draw hooks (4) with the corresponding number of the guide rail grooves are arranged in the shell (3), and the connecting piece penetrates through the guide rail grooves to connect the shell (3) and the conical draw hooks (4); the conical drag hook (4) is provided with a cavity, a connecting piece is arranged at the upper part of the cavity, and the lower part of the cavity is a bearing action surface.

2. The dismounting device for the cylindrical roller bearing without the outer ring of the transmission output shaft according to claim 1, wherein the connecting piece is a screw (2), and the screw (2) penetrates through a guide rail groove of the shell (3) to be connected with a threaded through hole at the upper part of a cavity of the conical drag hook (4) in a matching way.

3. A gearbox output shaft cylindrical roller bearing dismounting device without outer ring according to claim 1, characterized in that the conical drag hook (4) is provided with three.

4. A gearbox output shaft non-outer ring cylindrical roller bearing dismounting device as claimed in claim 3, characterized in that the three conical drag hooks (4) are all 120 °.

5. A gearbox output shaft cylindrical roller bearing dismounting device without outer ring according to claim 3, characterized in that three guide rail grooves are arranged on the shell (3), and the included angle between the guide rail grooves is set to 120 °.

6. A gearbox output shaft cylindrical roller bearing dismounting device without outer ring according to claim 1, wherein the bearing action surface is a sector action surface.

7. A gearbox output shaft cylindrical roller bearing dismounting device without outer ring according to claim 1, characterized in that the thickness of the bearing action surface in the conical drag hook (4) is smaller than the distance between the bearing retainer and the output shaft head.

8. A gearbox output shaft cylindrical roller bearing dismounting device without outer ring according to claim 1, characterized in that the screw (1) is connected with the shell (3) in a matched manner through a threaded hole.