CN101016921A

CN101016921A - Protection sheet

Info

Publication number: CN101016921A
Application number: CN 200710067430
Authority: CN
Inventors: 黄利平; 钱仰东
Original assignee: CIXING GROUP Co Ltd
Current assignee: Guangde Zhonglong Bearing Co., Ltd.
Priority date: 2007-03-08
Filing date: 2007-03-08
Publication date: 2007-08-15
Anticipated expiration: 2027-03-08
Also published as: CN100543333C

Abstract

A bearing protective plate comprises a body whose outer ring is welded on an outer ring at one end of the bearing, wherein the inner ring of the sheet body has protruded edge connected with a protective ring engaged with the inner ring on one end of the bearing. The invention has simple structure, with uniform small protrusions on the welding face of body, to obtain uniform heat and small deformation or the like, while the protective ring and the inner ring have low friction all time, to form a sealing layer to avoid leaking internal lubricant, to prolong the service life of bearing.

Description

Protection sheet

Technical field

The present invention relates to the seal protection sheet that a kind of bearing is used, on particularly a kind of end face that is fixed on bearing, effectively prevent the leakage of bearing internal grease, can prevent that again extraneous grease, dust and other medium from entering the protection sheet of bearing cavity.

Background technique

All are subjected to directly influencing of sealing effect and lubricating grease actual life in the use of bearing and working life, and the lubricating grease that be equipped with bearing inside moves under low Frotteurism as far as possible to keep bearing.The bearing of general band lubricating grease is worked if be installed in the speed-change gear box, because of working under hard conditions of gear-box, work under bad environment, in gear-box when work, is because of gear transmission, friction can produce a large amount of heats, operating temperature in the gear-box is raise, because of the rising of temperature can produce certain internal pulsations pressure again, bearing lubricating grease in it under the effect of certain pressure is easy to outwards be pushed and lets out, because of the frictional force of the minimizing bearing operation of lubricating grease will increase, make bearing impaired working life that influences bearing again, lubricating grease leaks out and flows in the gear-box with machine oil in the gear-box and mixes in addition, because of lubricating grease, machine oil is different components, the lubricant oil of same-action not, sneak into lubricating grease in the machine oil and influenced the gear meshing transmission again, caused working efficiency thus again, life-span, a series of problems such as safety, and this problem is perplexing and the matching used Production of bearing of gear-box producer always.

Patent No. CN02266982.5 " three lip frontier defense water-stop bearings ", patent No. CN200520073814.4 " composite seal ring of shaft bearing " is though provide a kind of waterproof sealing performance good, can prevent the leakage of bearing internal grease, has waterproof, the characteristics dustproof and grease-proof is leaked, but they have a common ground only can use by important obturator seal ring as of bearing, it all is the upward use of the age of a draught animal that is fitted in the inner ring and the bearing outer ring of bearing, and caulking gum is aging after the bearing long-term work, make seal ring easily loosening, stability, fixing is poor, so the bearing of this kind structure also is not suitable for working in the rugged environment of speed-changing gear box.

Summary of the invention

Technical problem to be solved by this invention is: a kind of protection sheet is provided, being fixed on the lubricating grease that prevents on the bearing in the bearing leaks, can prevent that again extraneous grease, dust and other medium from entering bearing cavity, bearing can be worked in rugged environment, and protective sheet installation simple in structure, easy, processing.

The present invention addresses the above problem the technological scheme that is adopted: protection sheet includes lamellar body; the outer ring of described lamellar body is weldingly fixed on the outer ring of bearing one end face; there is flange at described lamellar body inner ring place, and the flange place also is connected with guard circle, and guard circle cooperates with inner ring on bearing one end face.

Compared with prior art; the invention has the advantages that: this protection sheet is simple in structure; easy processing and fabricating; spot welding is fixed on the bearing outer ring end face that has seal ring; also has uniform small embossment on the face of weld of this protective sheet; periphery welding at small embossment; not only welding the firm bearing outer ring end face that guaranteed again is heated evenly; amount of deformation is little; improved simultaneously sealing reliability again with the outer ring; the inner ring inner lip of protective sheet remains low rubbing contact to bearing inner race; and form a sealing layer; can prevent the leakage of bearing internal lubrication fat effectively; also can prevent simultaneously extraneous grease; dust and other medium enter bearing cavity; the bearing long-term work; seal ring on the bearing can become flexible; but the protective sheet of outside is can not becoming flexible of welding; can not influence its function yet; make bearing have the double seal protective action; the lubricating grease that can block effectively in the bearing directly leaks out from the bearing guard circle; good airproof performance; improved the working life of bearing greatly; can in rugged environment, work again; solved the problem that gearbox middle (center) bearing leakage of oil normal phase can not get solving; this protective sheet suits in various different sizes; shape; structure; fixing use on the bearing of material, highly versatile; using scope is wide.

Description of drawings

Fig. 1, structural representation of the present invention (guard circle is arranged).

Fig. 2, structural representation of the present invention (unprotect circle).

Fig. 3, user mode reference drawing of the present invention (guard circle is arranged).

Fig. 4, user mode reference drawing of the present invention (unprotect circle).

Embodiment

Below in conjunction with accompanying drawing embodiments of the invention are further described.

The lamellar body 5 of protective sheet 1 is whole circular metal plate; the small embossment 4 that uniform band blind hole is arranged on the face of weld periphery of lamellar body 5; there is the high flange 2 that rises at lamellar body 5 inner ring places; be adhesively fixed with the guard circle 3 of the ring-type contact-type that is made into by rubber or plastics nonmetallic material at flange 2 and Nei Yanchu, as shown in Figure 1.

The circular metal plate that the lamellar body 5 of protective sheet 6 ' be is whole, lamellar body 5 ' the face of weld periphery on have the small embossment 4 of uniform band blind hole, lamellar body 5 ' inner ring place have the high flange 2 that rises ', as shown in Figure 2.

Method with protective sheet 1 usefulness spot welding; utilize the small embossment 4 on protective sheet 1 face of weld, be weldingly fixed on the end face of bearing outer ring 8, soldering point be distributed in small embossment 4 around on; and the guard circle 3 on protective sheet 1 inner ring is close on the end face of bearing inner race 7, as shown in Figure 3.

In like manner, protective sheet 6 utilizes small embossment 4 spot welding on it to be fixed on the end face of bearing outer ring 8, and the inner ring of protective sheet 6 and bearing inner race 7 Spielpassung, as shown in Figure 4.

During work; bearing rotates under external force, and the guard circle 3 and bearing inner race 7 close contact at protective sheet 1 inner lip place produce friction and form a sealing layer; the lubricating grease that just can block bearing inside effectively leaks out good airproof performance seal ring and the guard circle from bearing.

Protective sheet can be weldingly fixed on the bearing of various different sizes, shape, material, structure and to cooperate the double seal effect of playing with bearing, make the better tightness of bearing, reach the lubricating grease that makes in the bearing and do not leak, and extraneous dust, the purpose that other medium can not enter bearing cavity.

Claims

1, a kind of protection sheet; it is characterized in that including lamellar body, the outer ring of described lamellar body is weldingly fixed on the outer ring (8) of bearing one end face, and there is flange at described lamellar body inner ring place; the flange place also is connected with guard circle (3), and guard circle (3) cooperates with inner ring (7) on bearing one end face.

2, protection sheet according to claim 1, it is characterized in that described lamellar body (5), (5 ') are whole circular metal plate, the small embossment (4) that uniform band blind hole is arranged on lamellar body (5), (5 ') face of weld periphery, spot welding are fixed on the outer ring (8) of bearing one end face.

3, protection sheet according to claim 1, it is characterized in that described lamellar body (5) inner ring flange (2) and in fixing along place bonding, the guard circle (3) of the ring-type contact-type of making by nonmetallic material rubber or plastics.

4, protection sheet according to claim 1 is characterized in that described lamellar body (5 ') inner ring flange (2 ') locates unprotect circle (3).