CN219242445U

CN219242445U - Novel pre-tightening device for heavy-duty sealing thrust bearing

Info

Publication number: CN219242445U
Application number: CN202320143972.0U
Authority: CN
Inventors: 马环宇; 曲广义; 李洪新; 赵晓光
Original assignee: Dalian Haichuan Sealing Co ltd
Current assignee: Dalian Haichuan Sealing Co ltd
Priority date: 2023-02-07
Filing date: 2023-02-07
Publication date: 2023-06-23
Anticipated expiration: 2033-02-07

Abstract

The utility model discloses a novel pre-tightening device for a heavy-duty sealed thrust bearing, which comprises a shaft body, a shaft seat and a thrust self-aligning roller bearing, wherein the thrust self-aligning roller bearing consists of an inner ring, an outer ring and rolling bodies, the rolling bodies are movably connected with the outer ring, an assembly ring is detachably arranged on the outer wall of the shaft seat, a plurality of mounting tables are arranged on the outer wall of the assembly ring, a pre-tightening rod is detachably arranged on the mounting tables, the pre-tightening rod is movably connected and matched with the outer ring, a screw hole is formed in the pre-tightening rod, a stud is connected in the screw hole in a threaded manner, and the stud is matched with the outer ring.

Description

Novel pre-tightening device for heavy-duty sealing thrust bearing

Technical Field

The utility model relates to the field of bearing pre-tightening, in particular to a novel pre-tightening device for a heavy-duty sealing thrust bearing.

Background

Heavy duty seals are mainly used in the field of construction machinery such as: the double-cone sealing ring is generally matched with a thrust self-aligning roller bearing to be used when the double-cone sealing ring is used, the thrust self-aligning roller bearing is approximately the same as the self-aligning roller bearing, and the race roller surface is a spherical surface taking a point which is consistent with a central shaft of the bearing as a center, so that the bearing roller is spherical, has an automatic self-aligning function, is insensitive to coaxiality and deflection of the shaft, has very large axial load capacity, can bear a plurality of radial loads while bearing the axial load, and needs to pretension an outer ring of the thrust self-aligning roller bearing when the thrust self-aligning roller bearing is installed due to the structural specificity of the thrust self-aligning roller bearing.

The prior art generally uses a ball bearing-added pre-tightening disc spring, the disc spring is pre-tightened through elasticity and limit, the pre-tightening force is limited, and the play eliminating effect is limited.

Disclosure of Invention

The utility model aims to provide a novel pre-tightening device for a heavy-duty sealing thrust bearing, so as to solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a be used for sealed thrust bearing of heavy load novel pretension device, includes axis body, axle bed and thrust aligning roller bearing, thrust aligning roller bearing comprises inner ring, outer loop and rolling element, rolling element and outer loop swing joint, axle bed outer wall demountable installation has the equipment ring, a plurality of mount tables are installed to the equipment ring outer wall, mount table demountable installation has the pretension pole, pretension pole and outer loop swing joint and cooperation, the pretension pole is equipped with the screw, screw internal thread connection has the double-screw bolt, double-screw bolt and outer loop cooperation.

Preferably, the assembly ring comprises an upper semi-ring and a lower semi-ring, the upper semi-ring and the lower semi-ring are movably connected and attached to the shaft seat, and the upper semi-ring and the lower semi-ring are connected with the shaft seat through assembly bolts.

Preferably, the mounting table is provided with a mounting groove and a movable groove which are symmetrically arranged, the mounting groove is communicated with the movable groove, a lifting screw is symmetrically arranged at one end of the pre-tightening rod, a fixing nut is connected with the outer wall of the lifting screw in a threaded manner, the fixing nut is matched with the mounting table, and the lifting screw and the pre-tightening rod are respectively connected with the movable groove and the mounting groove in a sliding manner.

Preferably, the outer wall of the mounting table is symmetrically provided with comparison rules, and the comparison rules are positioned at the side ends of the movable grooves.

Preferably, a turntable is arranged at one end of the stud.

Preferably, an elastic block matched with the outer ring is arranged at the other end of the stud.

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

1. the outer ring of the thrust self-aligning roller bearing is tightly pressed through the pre-tightening rod and the screw rod, compared with the traditional ball bearing pre-tightening disc spring pre-tightening effect, the play of the thrust self-aligning roller bearing is further reduced, and the whole ball bearing self-aligning roller bearing is convenient to disassemble, assemble and replace.

Drawings

FIG. 1 is a cross-sectional view of the present utility model;

FIG. 2 is a right side cross-sectional view of the present utility model;

FIG. 3 is a top cross-sectional view of the mounting station of the present utility model;

FIG. 4 is a front view of the mounting table of the present utility model;

fig. 5 is an enlarged view of the area a of the present utility model.

In the figure: 1. a shaft body; 2. a thrust self-aligning roller bearing; 21. an inner ring; 22. a rolling element; 23. an outer ring; 3. a shaft seat; 4. assembling a ring; 41. an upper half ring; 42. a lower half ring; 43. assembling a bolt; 5. a mounting table; 51. a mounting groove; 52. a movable groove; 53. a comparison ruler; 6. a pre-tightening rod; 61. a screw hole; 611. a stud; 62. a turntable; 63. an elastic block; 64. lifting screw rods; 65. and (5) fixing a nut.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. 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.

Referring to fig. 1-5, the present utility model provides a technical solution: the utility model provides a be used for heavy load sealed thrust bearing novel pretension device, includes axis body 1, axle bed 3 and thrust aligning roller bearing 2, thrust aligning roller bearing 2 comprises inner ring 21, outer loop 23 and rolling element 22, rolling element 22 and outer loop 23 swing joint, axle bed 3 outer wall demountable installation has equipment ring 4, a plurality of mount tables 5 are installed to equipment ring 4 outer wall, mount table 5 demountable installation has pretension pole 6, pretension pole 6 and outer loop 23 swing joint and cooperation, pretension pole 6 is equipped with screw 61, screw 61 female connection has double-screw bolt 611, double-screw bolt 611 cooperates with outer loop 23.

Referring to fig. 1-2, the seats are movably connected and attached, and the upper half ring 41 and the lower half ring 42 are connected with the shaft seat 3 through assembling bolts 43.

Referring to fig. 1-2, the mounting table 5 is provided with a mounting groove 51 and a symmetrically arranged movable groove 52, the mounting groove 51 is communicated with the movable groove 52, one end of the pre-tightening rod 6 is symmetrically provided with a lifting screw 64, the outer wall of the lifting screw 64 is in threaded connection with a fixing nut 65, the fixing nut 65 is matched with the mounting table 5, and the lifting screw 64 and the pre-tightening rod 6 are respectively in sliding connection with the movable groove 52 and the mounting groove 51.

Referring to fig. 3 and 4, the outer wall of the mounting table 5 is symmetrically provided with a comparison ruler 53, the comparison ruler 53 is located at the side end of the movable groove 52, one end of the stud 611 is provided with a turntable 62, and the other end of the stud 611 is provided with an elastic block 63 matched with the outer ring 23.

The detailed connection means are known in the art, and the following mainly describes the working principle and process, and the specific work is as follows.

During installation, the upper half ring 41 and the lower half ring 42 are attached to the shaft seat 3, then the upper half ring 41 and the lower half ring 42 are fixed on the shaft seat 3 through the assembling bolts 43, then one end of the pre-tightening rod 6 with the lifting screw 64 is placed into the installation groove 51, at the moment, the lifting screw 64 on the pre-tightening rod 6 enters the movable groove 52, after the position of the pre-tightening rod 6 is adjusted through the comparison ruler 53, the fixing nut 65 is screwed on the lifting screw 64 and is attached to the outer wall of the installation table 5, finally, the stud 611 is driven to rotate through the screwing turntable 62 to enable the stud 611 to move towards the outer ring 23 to abut against the outer ring 23, and installation is completed, and at the moment, the outer ring 23 on the thrust aligning roller bearing 2 is attached to the rolling body 22 under the action of the pre-tightening rod 6 and the stud 611.

In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operate in a particular orientation; meanwhile, unless explicitly specified and limited otherwise, the terms "snap-in," "shaft-connected," "plug-in," "welded," "screwed-on" and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a be used for heavy-duty sealed thrust bearing novel pretension device, includes axis body (1), axle bed (3) and thrust aligning roller bearing (2), its characterized in that: thrust aligning roller bearing (2) comprises inner ring (21), outer loop (23) and rolling element (22), rolling element (22) and outer loop (23) swing joint, axle bed (3) outer wall demountable installation has equipment ring (4), a plurality of mount tables (5) are installed to equipment ring (4) outer wall, mount tables (5) demountable installation have pretension pole (6), pretension pole (6) and outer loop (23) swing joint and cooperation, pretension pole (6) are equipped with screw (61), screw (61) internal thread connection has double-screw bolt (611), double-screw bolt (611) and outer loop (23) cooperation.

2. The novel pretension device for heavy-duty sealed thrust bearings of claim 1, wherein: the assembly ring (4) comprises an upper semi-ring (41) and a lower semi-ring (42), the upper semi-ring (41) and the lower semi-ring (42) are movably connected and attached to the shaft seat (3), and the upper semi-ring (41) and the lower semi-ring (42) are connected with the shaft seat (3) through assembly bolts (43).

3. The novel pretension device for heavy-duty sealed thrust bearings of claim 1, wherein: the mounting table (5) is provided with a mounting groove (51) and a movable groove (52) which are symmetrically arranged, the mounting groove (51) is communicated with the movable groove (52), a lifting screw (64) is symmetrically arranged at one end of the pre-tightening rod (6), a fixing nut (65) is connected with the outer wall of the lifting screw (64) in a threaded mode, the fixing nut (65) is matched with the mounting table (5), and the lifting screw (64) and the pre-tightening rod (6) are respectively connected with the movable groove (52) and the mounting groove (51) in a sliding mode.

4. The novel pretension device for heavy-duty sealed thrust bearings of claim 1, wherein: the outer wall of the mounting table (5) is symmetrically provided with comparison rules (53), and the comparison rules (53) are positioned at the side ends of the movable grooves (52).

5. The novel pretension device for heavy-duty sealed thrust bearings of claim 1, wherein: one end of the stud (611) is provided with a rotary table (62).

6. The novel pretension device for heavy-duty sealed thrust bearings of claim 1, wherein: the other end of the stud (611) is provided with an elastic block (63) matched with the outer ring (23).