CN205248953U - Locking device for bearing - Google Patents

Abstract

The utility model discloses a locking device for bearing, including a ring spare that has the external screw thread, ring spare middle part is seted up rather than the parallel deep trouth of both sides face, is provided with the screw hole that runs through ring spare both sides face on the ring spare of deep trouth opening part, and threaded hole is provided with the bolt. Twist threaded hole through the bolt, can make the external screw thread of ring spare warp to reach the function that realizes axial locking. Ring spare inside and motor shaft keep a determining deviation within a definite time, and when the high -speed rotation of pivot, ring spare still keeps static, effectively avoid ensureing its life and fail safe nature along with a wearing and tearing that the transportation led to the fact, and simultaneously, the ring spare of external screw thread is not connected with the pivot, need not countershaft processing screw, can effectively improve the intensity of pivot.

Description

A kind of bearing locking device

Technical field

The utility model belongs to technical field of motors, is specifically related to a kind of bearing locking device.

Background technology

Traditional bearing locking device is an internal thread locking nut and a packing ring composition, by locking nut and coordinating of axle playing locking effect, there is no axial pretightening device, bearing locking device can rotate with the axis slowly loosening, lose the effect of locking, this has just determined that its environment for use is not preferably High Rotation Speed part, this outer nut is internal thread, the axle coordinating with it need to be reprocessed, opening screw thread thereon connects, will reduce the intensity of axle, and need additional back-up ring and radially pad prevent its radially vibration; And for high-speed electric expreess locomotive, very high to service life and security requirement, this structure is obviously not too applicable. Especially for core four generations motor for to say, need badly and will develop a safe and reliable bearing locking device that is applicable to high-speed rotary motor.

Utility model content

The purpose of this utility model is for above-mentioned the deficiencies in the prior art, provides a kind of simple in structure, easy and simple to handle, effectively realizes the bearing locking device of the bearing of high-speed rotary motor being locked, met core four generations motor needs.

For realizing the technical scheme that the purpose of this utility model adopts be: a kind of bearing locking device, comprise that has an externally threaded annulus part, annulus part middle part offers the deep trouth parallel with its two sides, on the annulus part of deep trouth opening part, be provided with the screwed hole that runs through annulus part two sides, in screwed hole, be provided with bolt.

On the side of annulus part, be also laid with installing hole or mounting groove.

Described annulus part is the round nut with external thread structure.

Described screwed hole one side is provided with spacing hole or stopper slot, on described bolt, is arranged with lock washer with tongue at outside, and described bolt has the head of polygon trough of belt.

Described bolt is hexagon head band slot bolt.

The utility model has externally threaded annulus part by employing, thereby effectively realize and closely cooperating by its external screw thread by sealing drum or end cap in annulus part and rotor, and by annulus part, offer deep trouth and and at deep trouth opening, screwed hole is set outward, be screwed in screwed hole by bolt, can make the external screw thread distortion of annulus part, thereby reach the function that realizes axial locking. Between annulus part inside and machine shaft, keep a determining deviation, in the time of rotating shaft High Rotation Speed, it is static that annulus part still keeps, effectively avoid transporting with axle the wearing and tearing that cause, ensure its service life and security reliability, meanwhile, externally threaded annulus part is not connected with rotating shaft, without countershaft machining screw, can effectively improve the intensity of rotating shaft. Further, by lay installing hole or groove in annulus part side, be very easy to annulus part spinning is entered in rotor on sealing drum or end cap. A step again, by spacing hole or groove are set near screwed hole, and adopt lock washer with tongue at outside to match with the bolt with polygonal head, the outer tongue of stop washer inserts in spacing hole or groove, after bolt is rotated in place, stop washer is turned up along bolt head side, can effectively be avoided putting of bolt to turn, further improve the security reliability of bearing locking.

Brief description of the drawings

Below in conjunction with accompanying drawing, the utility model is described further:

Fig. 1 is the assembly structure schematic diagram of the utility model embodiment mono-;

Fig. 2 is the partial enlarged drawing at a place in Fig. 1;

Fig. 3 is the structural representation of annulus part in the utility model;

Fig. 4 is that the A-A of Fig. 3 is to profile;

Fig. 5 is the structural representation of lock washer with tongue at outside in the utility model;

Fig. 6 is that the B-B of Fig. 5 is to profile;

Fig. 7 is the structural representation of bolt in the utility model;

Fig. 8 is the left view of Fig. 7.

Detailed description of the invention

Referring to Fig. 1-8, in figure, 1 is machine shaft, 2 is bearing, 3 is sealing drum in rotor, bearing locking device of the present utility model, comprise an annulus part 4 being threaded with sealing drum in rotor 3, this annulus part 4 is for having externally threaded round nut, its internal diameter is greater than the diameter of machine shaft 3, and inner wall smooth, annulus part 4 middle parts offer the deep trouth parallel with its two sides 44 by the waist, on the annulus part 4 of deep trouth 44 opening parts, be provided with the screwed hole 42 that runs through annulus part two sides, in screwed hole 42, be provided with the bolt 6 of head 61 for hexagon and top trough of belt, this bolt head 61 also can adopt pentagon, quadrangle or triangular structure, be intended to its head and there is a side plane, described screwed hole 42 1 sides are provided with spacing hole 41, this spacing hole 41 also can groove structure, a sheathed lock washer with tongue at outside 5 on described bolt 6, and screw in described screwed hole 42, the outer tongue 51 of lock washer with tongue at outside 5 is inserted in spacing hole 41 and avoids rotating, after bolt 6 is rotated in place, the part that lock washer with tongue at outside 5 exposes outside bolt is upwards turned up, fit in the side of bolt head 61, thereby avoid bolt 6 to rotate. on the side of described annulus part 4, be laid with 4 installing holes 43, realize control annulus part 4 rotate by installing hole 43, installing hole 43 also can adopt groove structure.

Applicant tests the utility model structure applications in certain type high-speed rotary motor, and safe and reliable to operation, effect is remarkable, and producers reflect that it is simple in structure, it is very convenient to implement.

The technical solution of the utility model is not restricted in the scope of embodiment described in the utility model, and the utility model not technology contents of detailed description is known technology.

Claims (5)

1. a bearing locking device, it is characterized in that: it comprises that has an externally threaded annulus part, annulus part middle part offers the deep trouth parallel with its two sides, on the annulus part of deep trouth opening part, is provided with the screwed hole that runs through annulus part two sides, is provided with bolt in screwed hole.

2. bearing locking device as claimed in claim 1, is characterized in that: on the side of described annulus part, be also laid with installing hole or mounting groove.

3. bearing locking device as claimed in claim 1 or 2, is characterized in that: described annulus part is the round nut with external thread structure.

4. bearing locking device as claimed in claim 1, is characterized in that: described screwed hole one side is provided with spacing hole or stopper slot, on described bolt, is arranged with lock washer with tongue at outside, and described bolt has the head of polygon trough of belt.

5. the bearing locking device as described in claim 1 or 2 or 4, is characterized in that: described bolt is hexagon head band slot bolt.