CN213257999U

CN213257999U - Bearing dismounting device

Info

Publication number: CN213257999U
Application number: CN202022261862.3U
Authority: CN
Inventors: 万成; 周汉松; 翁贵祥; 王小亮; 刘后祥; 钟颖
Original assignee: Chongqing Gearbox Co Ltd
Current assignee: Chongqing Gearbox Co Ltd
Priority date: 2020-10-12
Filing date: 2020-10-12
Publication date: 2021-05-25
Anticipated expiration: 2030-10-12

Abstract

The utility model discloses a bearing dismounting device for the dismounting is installed in epaxial bearing, including being used for the sealed lower extreme mounting that supports in the inner circle bottom surface of bearing, the top sealing connection of lower extreme mounting has the oil scraper ring, the oil scraper ring with the lower extreme mounting encloses into the cavity that is used for holding the heating fluid body, just the joining of heating fluid body highly is higher than the roller of bearing just is less than the inner circle, with lower extreme mounting complex is provided with the pull rod, the top fixedly connected with tray of pull rod, the bottom surface of tray offsets with the one end of flexible driving piece, the other end of flexible driving piece be used for with the terminal surface of axle offsets, in order to pass through the tray the pull rod acts on the lower extreme mounting to ascending effort is applyed to the inner circle. The bearing dismounting device is used for dismounting the bearing, time and labor are saved, and the bearing and the shaft cannot be damaged in the dismounting process.

Description

Bearing dismounting device

Technical Field

The utility model relates to a mechanical equipment technical field, more specifically say, relate to a bearing dismounting device.

Background

The bearing is an important part for fixing and reducing the load friction coefficient in the mechanical transmission process, can effectively reduce the friction coefficient in the transmission force transmission process and can ensure that the center position of the shaft is fixed. In recent years, the mechanical industry develops rapidly, particularly the high-speed heavy-load speed reducer industry develops more rapidly, the matching requirement of a bearing and a shaft is higher, H7/r6 matching needs to be achieved for many times, and H7/s6 matching tolerance needs to be achieved for some special industries such as hollow shafts, so that the problem of bearing disassembly is great.

The traditional manual mechanical disassembly method is easy to cause axial diameter strain or bearing inner ring strain or deformation, and further the service life of the bearing is influenced. Meanwhile, manual disassembly is time-consuming and labor-consuming, and the working efficiency is low.

In summary, how to effectively solve the problem that the service life of the bearing is affected by manually disassembling the bearing is a problem to be solved by the technical personnel in the field at present.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a bearing dismounting device, this bearing dismounting device's structural design can solve the problem that artifical dismantlement bearing influences bearing life effectively.

In order to achieve the first object, the present invention provides the following technical solutions:

the utility model provides a bearing dismounting device for dismantle and install epaxial bearing, including being used for the sealed lower extreme mounting that supports in the inner circle bottom surface of bearing, the top sealing connection of lower extreme mounting has the oil scraper ring, the oil scraper ring with the lower extreme mounting encloses into the cavity that is used for holding the heating fluid body, just the joining of heating fluid body highly is higher than the roller of bearing just is less than the inner circle, with lower extreme mounting complex is provided with the pull rod, the top fixedly connected with tray of pull rod, the bottom surface of tray offsets with the one end of flexible driving piece, the other end of flexible driving piece be used for with the terminal surface of axle offsets, with through the tray the pull rod acts on the lower extreme mounting to upwards effort is applyed to the inner circle.

Preferably, the bearing detaching device further includes a heating member for heating the heating liquid.

Preferably, in the bearing detaching device, the heating member is a heating coil wound around an outer wall of the slinger.

Preferably, the bearing detaching device further includes a temperature sensor for detecting a temperature of the heated liquid.

Preferably, in the above bearing detaching device, the temperature sensor is attached to an outer wall of the slinger.

Preferably, in the above bearing detaching device, the heating liquid is lubricating oil.

Preferably, in the bearing dismounting device, the pull rod is a screw rod, a nut is screwed on the screw rod, and the bottom end of the lower end fixing piece penetrates through the screw rod and abuts against the top surface of the nut.

Preferably, in the bearing dismounting device, the lower end fixing member includes a first flange and a second flange fixedly supported at the lower end of the first flange, the first flange abuts against the inner ring, and the first flange is a split flange including at least two splicing blocks.

Preferably, in the bearing dismounting device, each of the splicing blocks is connected to the second flange through a bolt.

The utility model provides a bearing dismounting device for the dismounting installation is in epaxial bearing, including lower extreme mounting, oil scraper ring, pull rod, tray and flexible driving piece. The lower end fixing piece is used for being supported on the bottom surface of the inner ring of the bearing in a sealing mode; the oil retainer ring is connected above the lower end fixing piece in a sealing mode, a cavity for containing heating liquid is enclosed by the oil retainer ring and the lower end fixing piece, and the adding height of the heating liquid is higher than that of the roller of the bearing and lower than that of the inner ring; the bottom end of the pull rod is matched with the lower end fixing piece to support the lower end fixing piece, and the top end of the pull rod is fixedly connected with a tray; the bottom surface of tray offsets with the one end of flexible driving piece, and the other end of flexible driving piece is used for offsetting with the terminal surface of axle to act on the lower extreme mounting through tray, pull rod and exert ascending effort to the inner circle.

Use the utility model provides a bearing dismounting device, the oil scraper ring is connected on the lower extreme mounting, and the terminal surface of this lower extreme mounting supports and leans on the bearing inner circle, makes lower extreme mounting and bearing inner circle paste tightly for the certain pulling force of lower extreme mounting through the pull rod, then pours the heating fluid into in the cavity that oil scraper ring and lower extreme mounting enclose, and the roller that highly is greater than the bearing of the joining of heating fluid and be less than the inner circle, then the heating fluid just walks over the roller and is full of roller and inner circle space. The bearing is heated through the heating liquid to enable the inner hole of the bearing to expand, the temperature of the shaft is lower at this time and does not expand, one end of the telescopic driving piece is abutted to the end face of the shaft, the other end of the telescopic driving piece is abutted to the bottom face of the tray, the telescopic driving piece acts on the tray, the lower end fixing piece is transmitted to the lower end fixing piece through the pull rod, upward pulling force is given to the lower end fixing piece, and therefore the pulling force acts on the inner ring of the bearing and the bearing is detached from the. By adopting the bearing dismounting device, time and labor are saved during dismounting, and the bearing and the shaft cannot be damaged during dismounting.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a bearing dismounting device according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of the tray of FIG. 1;

FIG. 3 is a schematic view of the structure of the drawbar of FIG. 1;

FIG. 4 is a schematic structural view of the first flange of FIG. 1;

FIG. 5 is a schematic structural view of the second flange of FIG. 1;

fig. 6 is a schematic structural view of the oil control ring in fig. 1.

The drawings are numbered as follows:

the heating device comprises a screw 1, a nut 2, a tray 3, a telescopic driving piece 4, a shaft 5, a bearing 6, an oil retainer 7, a heating coil 8, a heating liquid 9, a first flange 10 and a second flange 11.

Detailed Description

The embodiment of the utility model discloses bearing dismounting device to avoid causing axle and bearing damage when the bearing is dismantled, simultaneously can labour saving and time saving.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 6, fig. 1 is a schematic structural diagram of a bearing dismounting device according to an embodiment of the present invention; FIG. 2 is a schematic view of the structure of the tray of FIG. 1; FIG. 3 is a schematic view of the structure of the drawbar of FIG. 1; FIG. 4 is a schematic structural view of the first flange of FIG. 1; FIG. 5 is a schematic structural view of the second flange of FIG. 1; fig. 6 is a schematic structural view of the oil control ring in fig. 1.

In a specific embodiment, the utility model provides a bearing dismounting device for dismantle the bearing 6 of installing on axle 5, axle 5 specifically can be gear shaft 5. The bearing dismounting device comprises a lower end fixing piece, an oil retainer ring 7, a pull rod, a tray 3 and a telescopic driving piece 4.

Wherein, the lower end fixing piece is used for being supported on the bottom surface of the inner ring of the bearing 6 in a sealing way. The lower end fixing piece can be a flange, such as a circular flange, and is arranged through the diameter of the inner hole, so that the lower end fixing piece is supported at the bottom of the inner ring in a sealing mode.

The oil retainer 7 is connected above the lower end fixing piece in a sealing mode, a cavity used for containing the heating liquid 9 is defined by the oil retainer 7 and the lower end fixing piece, and the adding height of the heating liquid 9 is higher than that of the roller of the bearing 6 and lower than that of the inner ring. The oil slinger 7 and the lower end fixing piece can be of a split structure in sealing fixed connection or an integrated structure. The oil deflector ring 7 is detachably, hermetically and fixedly connected with the lower end fixing piece, such as by adopting a bolt connection. In order to facilitate the connection between the oil slinger 7 and the lower end fixing piece, a flange is arranged at the bottom end of the oil slinger 7 and is connected with the lower end fixing piece through a bolt.

The oil retainer 7 and the lower end fixing piece enclose a cavity for containing the heating liquid 9, the lower end fixing piece is supported on the bottom surface of the inner ring in a sealing mode, and the cavity enclosed by the oil retainer 7, the lower end fixing piece and the inner ring can contain the heating liquid 9. The heating liquid 9 may in particular be lubricating oil which does not adversely affect the bearings 6. The heating liquid 9 can also be other oils or conventional liquids, as desired. The heating liquid 9 is used for heating the bearing 6, and the specific temperature thereof is set according to the need and is not limited in detail here. The heated liquid 9 is added at a level above the rollers of the bearings 6 and below the inner race so that the heated liquid 9 just overflows the rollers and fills the roller and inner race space, but does not contact the shaft 5 and act on the shaft 5.

The bottom end of the pull rod is matched with the lower end fixing piece to support the lower end fixing piece, and the top end of the pull rod is fixedly connected with the tray 3. The bottom surface of tray 3 offsets with the one end of flexible driving piece 4, and the other end of flexible driving piece 4 is used for offsetting with the terminal surface of axle 5 to act on the lower extreme mounting through tray 3, pull rod and exert ascending effort to the inner circle. Specifically, the bottom end of the pull rod is provided with a boss for supporting the lower end fixing piece, and the effect of force is exerted on the lower end fixing piece through the boss. That is, the lower end fixing piece is tightly attached to the inner ring through the pull rod, the tray 3 and the telescopic driving piece 4, then upward acting force is applied to the tray 3 through the telescopic driving piece 4, the tray 3 applies pulling force to the lower end fixing piece through the pull rod, and therefore the lower end fixing piece acts on the inner ring. The telescopic driving member 4 may be a hydraulic cylinder, and other telescopic driving members such as an air cylinder may be used as necessary.

In order to make the pressure that lower extreme mounting applyed to the inner circle more even, including a plurality of pull rods, a plurality of pull rods are all distributed along bearing 6's circumference, and the bottom of each pull rod cooperates with the lower extreme mounting respectively, and the top is respectively with tray 3 fixed connection.

Use the utility model provides a bearing dismounting device, oil scraper ring 7 is connected on the lower extreme mounting, and the terminal surface of this lower extreme mounting supports and leans on 6 inner circles of bearing, gives the certain pulling force of lower extreme mounting through the pull rod and makes lower extreme mounting and 6 inner circles of bearing paste tightly, then pours the heating fluid body 9 into in the cavity that forms to oil scraper ring 7 and lower extreme mounting enclose, and the joining of heating fluid body 9 highly is greater than bearing 6's roller and is less than the inner circle, then heating fluid body 9 just walks over the roller and is full of roller and inner circle space. Heating makes bearing 6 hole rise through heating liquid 9 bearing 6, and the lower not rise yet of the temperature of axle 5 this moment, consequently offsets with the terminal surface of axle 5 through the one end of flexible driving piece 4, and the other end offsets with tray 3 bottom surface, and flexible driving piece 4 acts on tray 3 to transmit to the lower extreme mounting through the pull rod, give the ascending pulling force of lower extreme mounting, thereby act on bearing 6's inner circle, dismantle bearing 6 from axle 5. By adopting the bearing dismounting device, the dismounting is time-saving and labor-saving, and the bearing 6 and the shaft 5 cannot be damaged in the dismounting process.

In particular, heating means for heating the heated liquid 9 are also included. Through the arrangement of the heating part, the heating liquid 9 can be heated in real time so as to be kept at a proper temperature, and the inner hole of the bearing 6 is convenient to expand along with the temperature rise. If necessary, the heating liquid 9 needs to be heated to a certain temperature without a heating member, and then poured into the cavity.

The heating member is specifically a heating coil 8 wound around the outer wall of the slinger 7. I.e. induction heating by the heating coil 8, the temperature of the heating coil 8 may specifically be set such that the heated liquid 9 is maintained at a suitable temperature. The heating component can also be other conventional heating structures such as a heating pipe and the like according to requirements.

Further, a temperature sensor for detecting the temperature of the heated liquid 9 is included. By means of the temperature sensor, the temperature of the heated liquid 9 can be detected in real time, so that the temperature can be controlled conveniently to be kept at a proper temperature. Specifically, the heating member heats the heating liquid 9, the temperature of the heating liquid 9 is detected by the temperature sensor, after the heating liquid 9 is heated to the required temperature, the inner hole of the bearing 6 is expanded after the bearing 6 is heated for a period of time, and the temperature of the shaft 5 is lower (the temperature difference between the bearing 6 and the shaft 5 can reach 50-60 ℃) at the moment because the time is shorter, the inner hole of the bearing 6 is not expanded, the inner hole of the bearing 6 is matched with the shaft 5 to form small interference fit or clearance fit, and the bearing 6 is detached from the shaft 5 by applying pressure to the telescopic driving member 4 and moving the lower.

Specifically, the temperature sensor is attached to the outer wall of the slinger 7, and indirectly detects the temperature of the heating liquid 9 from the outside. And the temperature sensor is arranged on the outer wall of the oil retainer 7, and the temperature sensor is not soaked by the heating liquid 9, so that the requirements on the temperature sensor such as water resistance are reduced. The specific temperature sensor can be a thermometer or a temperature sensor and other conventional devices. As required, a temperature sensor may also be provided within the cavity to directly detect the temperature of the heated liquid 9.

In the above embodiments, the pull rod is a screw rod 1, a nut is screwed on the screw rod 1, and the bottom end of the lower end fixing piece penetrates through the screw rod 1 and abuts against the top surface of the nut. Because the top of screw rod 1 and tray 3 fixed connection, through 4 both ends of flexible driving piece respectively with tray 3 and axle 5 counterbalance for the bottom of lower extreme mounting offsets with the nut on the screw rod 1. The pull rod adopts a screw rod 1 and is matched with a nut, so that the pull rod is conveniently matched with the lower end fixing piece and applies acting force to the lower end fixing piece. Tray 3 and screw rod 1's fixed connection specifically can be through the upper and lower both ends at tray 3 set up respectively with the nut of screw rod 1 locking to compress tightly tray 3 on screw rod 1. According to the requirement, the bottom end of the pull rod is fixedly connected with a boss for supporting the lower end part, and the boss applies force to the pull rod. The screw 1 and the tray 3 can be fixed by the nut 2, for example, the tray 3 passes through the top end of the screw 1, and the nuts 2 are screwed at the upper end and the lower end of the tray 3 on the screw 1 respectively, so that the tray 3 is positioned.

On the basis of the above embodiments, the lower end fixing member includes a first flange 10 and a second flange 11 fixedly supported at the lower end of the first flange 10, the first flange 10 abuts against the inner ring, and the first flange 10 is a split flange including at least two splicing blocks. That is to say second flange 11 is used for supporting first flange 10, and first flange 10 adopts split type structure, just can be applicable in the bearing 6 dismantlement of different holes through the splice block hole size of change first flange 10 for this frock commonality is strong. The first flange 10 and the second flange 11 may be provided with through holes for passing through the tie rods. Specifically, the first flange 10 is a splicing block including two semicircles, that is, two half flanges, and the second flange 11 is a circular flange. Specifically, each splicing block is connected with the second flange 11 through a bolt.

The working process of the bearing dismounting device is described as a specific embodiment, which comprises the following steps:

s1: the gear shaft 5 is vertically placed;

s2: respectively placing the two half flanges on the circular flange, penetrating the half flanges and the circular flange by a screw rod 1, and screwing the half flanges and the circular flange at the lower end of the circular flange by a nut;

s3: placing an oil deflector ring 7 on a half flange and fastening the oil deflector ring 7 by using bolts, then uniformly winding a heating coil 8 on the outer ring of the oil deflector ring 7, and simultaneously placing a heater temperature sensor on the outer ring of the oil deflector ring 7;

s4: placing a telescopic driving piece 4 on the upper end surface of a gear shaft 5, then placing a tray 3 on the telescopic driving piece 4 through a screw rod 1, and positioning the tray 3 by using a nut 2;

s5: applying certain pressure to a hydraulic cylinder, and lifting the circular flange and the half flange through the tray 3 and the screw rod 1 to enable the upper end face of the half flange to be tightly attached to the inner ring of the bearing 6;

s6: gear lubricating oil is added into the oil retainer 7 to submerge the space between the roller and the inner ring of the bearing 6 and be not higher than the inner ring;

s7: heating the oil temperature by the heating coil 8, and keeping the oil temperature at an appropriate temperature by setting the temperature of the heating coil 8; when the oil temperature is raised to the required temperature, the bearing 6 is subjected to oil bath for a period of time, then the inner hole of the bearing 6 is expanded, and because the time is short, the temperature of the gear shaft 5 is low (the temperature difference between the bearing 6 and the shaft 5 can reach 50-60 ℃), and the inner hole of the bearing 6 is not expanded, the inner hole of the bearing 6 is in radial fit with the shaft 5 to be in small interference fit or clearance fit, and then the bearing 6 is detached from the gear shaft 5 through flange movement by applying pressure to a hydraulic cylinder.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a bearing dismounting device for dismantle and install in epaxial bearing, its characterized in that, including the lower extreme mounting that is used for sealed support in the inner circle bottom surface of bearing, the top sealing connection of lower extreme mounting has the oil scraper ring, the oil scraper ring with the lower extreme mounting encloses into the cavity that is used for holding the heating fluid body, just the joining of heating fluid body highly is higher than the roller of bearing just is less than the inner circle, with lower extreme mounting complex is provided with the pull rod, the top fixedly connected with tray of pull rod, the bottom surface of tray offsets with the one end of flexible driving piece, the other end of flexible driving piece be used for with the terminal surface of axle offsets, in order to pass through the tray the pull rod acts on the lower extreme mounting to upwards effort is applyed to the inner circle.

2. The bearing removal apparatus of claim 1, further comprising a heating element for heating the heated liquid.

3. The bearing disassembling apparatus according to claim 2, wherein the heating member is a heating coil wound around an outer wall of the slinger.

4. The bearing removal apparatus of claim 2, further comprising a temperature sensor for detecting a temperature of said heated fluid.

5. The bearing disassembling apparatus according to claim 4, wherein the temperature sensor is installed to an outer wall of the slinger.

6. The bearing disassembly apparatus of claim 1, wherein the heated liquid is a lubricating oil.

7. The bearing dismounting device according to any one of claims 1-6, wherein the pull rod is a screw rod, a nut is screwed on the screw rod, and the bottom end of the lower end fixing member penetrates through the screw rod and abuts against the top surface of the nut.

8. The bearing dismounting device according to any one of claims 1 to 6, wherein the lower end fixing member comprises a first flange and a second flange fixedly supported at a lower end of the first flange, the first flange abuts against the inner ring, and the first flange is a split flange comprising at least two splicing blocks.

9. The bearing dismounting device according to claim 8, wherein each of the splice blocks is bolted to the second flange.