CN201696488U

CN201696488U - Decelerating bearing

Info

Publication number: CN201696488U
Application number: CN 201020055467
Authority: CN
Inventors: 罗星健
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-01-21
Filing date: 2010-01-21
Publication date: 2011-01-05
Anticipated expiration: 2020-01-21

Abstract

The utility model discloses a decelerating bearing, which comprises a decelerating sliding bearing and a decelerating rolling bearing and belongs to the filed of a bearing device of a mechanical device. The decelerating bearing consists of a spindle gear, a planetary gear block, a driven gear sleeve, a planetary gear sleeve, a fixed gear ring, a rotary ring and a stationary ring. The decelerating bearing is characterized in that a coaxial gear is fixed onto a high-speed rotating shaft needing to be supported, the coaxial gear drives the planetary gear block to roll on the fixed gear ring on a machine wall, one fixed coaxial gear or a plurality of fixed coaxial gears on the planetary gear block further drive the driven gear sleeve coaxial with a spindle to rotate at low speed in the same direction, and simultaneously, the planetary gear block sleeve also drives a sleeve concentric to the spindle to rotate at lower speed in the same direction, thereby forming relative rotation with gradually reducing speed among the surface of the spindle, the surfaces of the driven gear sleeves, the surface of the planetary gear sleeve and the surface of the fixed wall. The decelerating bearing can conveniently realize different relative rotational speeds, such as one-third of the speed of the spindle, among all contacting surfaces according to different selection of gear ratios, then constructs bearing structures among the relative movement surfaces, can be the multi-stage sliding bearing or the multi-stage rolling bearing.

Description

Speed reduction bearing

Affiliated technical field

The utility model relates to the speed reduction bearing device that a kind of power machine is used, and it comprises deceleration sliding bearing and deceleration rolling bearing.It belongs to the bearing means of machinery.It is widely used in the supporting of high-speed rotating shaft of machinery.

Background technique

At present, the bearing of known power equipment, sliding bearing no matter, rolling bearing, its structure all is based on and will seeks a kind of supporting between high-speed main spindle and static wall, but along with improving constantly of machine rotational speed, will realize safety supporting difficulty day by day effectively, because the rotating speed height of axle, the relative velocity of supporting surface is big, cause the bearing velocity limit low, the life-span is low; For this reason, how improving effectively bearing performance and life-span, one of outlet is exactly under the condition of the rotating speed that does not change main shaft, how to reduce the speed of related movement of bearing face effectively, therefore we claim that this mode is a speed reduction bearing, and it comprises deceleration sliding bearing and deceleration rolling bearing.Through online search inquiry, existing still do not have similar structure and notion about the bearing patent.

Summary of the invention

The difficulty that causes for the supporting surface relative velocity height that overcomes the existing bearing device, we manage to design one deck to the homodromal concentric ring of multilayer low speed between high speed shaft and machine stationary face, then, realize successively that between main shaft, one to multiple layer concentric ring and stationary face two-stage, three grades are to multistage bearer ring, relative velocity between the bearing anchor rings then at different levels will reduce more than 1/3rd step by step, thereby realize the reduction of speed bearing effectively.Because the relative velocity of supporting surface is low, they are than more than the high several times of traditional bearing life, and bearing performance also improves more than the several times.

The technological scheme that its technical problem that solves the utility model adopts is: fix in-line gears on the high-speed rotating shaft that will support, driving the planetary pinion piece by it rolls on the fixed gear ring on the machine wall, one or more fixing coaxial gears on the planetary pinion piece drive with the coaxial driven gear sleeve of main shaft again and do equidirectionally to slowly run, simultaneously planetary pinion piece axle also drives one and does the more equidirectional rotation of low speed with the concentric sleeve of main shaft, thereby constituted spindle face, each driven gear sleeve section, the planet pin sleeve section, relatively rotating of reduction of speed step by step between the fixed wall, according to selecting different gear ratios, can realize easily that the difference between the surface of contact at different levels relatively rotates speed, such as all being 1/3rd of main shaft, tectonic axis bearing structure between these relative movement faces then, can be multistage sliding bearing, also can be multistage rolling bearing.

Core Feature of the present utility model is: by the induced effect of planetary pinion piece, thereby realized from high-revolving main shaft to multistage driven gear sleeve, to the planetary pinion shaft sleeve, to the relative movement of the equidirectional reduction of speed step by step the fixed wall. can between these equidirectional surface of revolution of reduction of speed step by step, construct traditional bearing structure effectively easily.

Specific embodiments of the present utility model is: bearing structure is by mainshaft gear, the planetary pinion piece, fixed gear ring, the driven gear sleeve, the planetary pinion shaft sleeve is formed, mainshaft gear drives planetary pinion piece engagement rolling on fixed gear ring, planet tooth piece drives the driven gear sleeve, the motion of planetary pinion shaft sleeve retinue star gear shaft, speed of related movement between formation main shaft gyration face, driven gear sleeve section, planet pin sleeve section, the fixed wall is the bearing surface of reduction of speed step by step, between this series axis bearing surface, constitute sliding bearing or rolling bearing structure.

The beneficial effects of the utility model are, because the speed that relatively rotates between the bearing surfaces at different levels is low than main shaft, thereby can construct bearing with existing traditional approach easily, and can improve greatly bearing performance and life-span.

Significantly use for one and be, such as spindle speed is 10000 rev/mins, use all motions of more difficult supporting axle of which kind of bearing, if but adopt three grades of reduction of speed modes of this speed reduction bearing, the speed that relatively rotates all is reduced to 1/3rd, become 3330 rev/mins bearing, then bearing structure will more easily be realized.

A useful prospect is, speed reduction bearing can make one-level, secondary, and three grades, level Four, Pyatyi, the speed that relatively rotates between adjacent surfaces then at different levels is lower, can be used for requiring under some high rotating speeds the border, field of supporting easily and flexibly.

Below in conjunction with drawings and Examples the utility model is further specified.

Description of drawings

Fig. 1 is the structure sketch drawing that speed reduction bearing of the present utility model is used for three grades of sliding bearings.

Fig. 2 is the structure diagram that speed reduction bearing of the present utility model is used for three grades of rolling bearings.

Among the figure, 1. mainshaft gear, 2. planetary pinion piece, 3. fixed gear ring, 4. driven gear sleeve, 5. planetary pinion shaft sleeve, 6. cold true Lubricants is imported and exported, 7. main shaft, 8. loam cake, 9. set screw, A. first order bearer ring, B. second level bearer ring, C. third level bearer ring.

Embodiment

In Fig. 1, main shaft (7) and mainshaft gear (1) high speed rotating, mainshaft gear (1) drives planet wheel piece (2) and goes up engagement rolling at fixed gear ring (3), the coaxial gear driven driven gear sleeve (4) of planetary pinion piece (2) is done and the equidirectional rotation of main shaft (7), the axle of planetary pinion piece (2) drives planet wheel shaft sleeve (5) and does same and the equidirectional rotation of main shaft (7), because planetary decelerating effect, what present between main shaft (7) and driven gear sleeve (4) adjacent surface is that (A) supports with first order bearer ring than the low relative movement of main shaft speed; Adjacent surface between driven gear sleeve (4) and planetary pinion shaft sleeve (5) also presents the relative movement low than spindle speed, and (B) supports with second level bearer ring; The relative movement low than spindle speed promptly also appears in planetary pinion shaft sleeve (5) and fixed wall between the fixed gear ring (3), (C) supports with third level bearer ring, realized three grades of deceleration sliding bearing structures.

In Fig. 2, main shaft (7) and mainshaft gear (1) high speed rotating, mainshaft gear (1) drives planetary pinion piece (2) and goes up engagement rolling at fixed gear ring (3), the coaxial gear driven driven gear sleeve (4) of planetary pinion piece (2) is done and the equidirectional rotation of main shaft (7), the axle of planetary pinion piece (2) drives planetary pinion shaft sleeve (5) and does and the equidirectional rotation of main shaft (7). because planetary decelerating effect, what present between main shaft (7) and driven gear sleeve (4) adjacent surface is that (A) supports with first order bearer ring than low the relatively rotating of spindle speed; Adjacent surface between driven gear sleeve (4) and planetary pinion shaft sleeve (5) also presents than low the relatively rotating of spindle speed, and (B) supports with second level bearer ring; Planet wheel shaft sleeve (5) and fixed wall promptly also occur than low the relatively rotating of spindle speed between the fixed gear ring (3), and (C) supports with third level bearer ring, have realized three grades of deceleration rolling bearing structures.

Two embodiments of the present utility model only are the secondary planetary gear pieces, and it only drives a driven gear sleeve, realization be the supportings of three grades of bearings.If without the planetary pinion sleeve, can realize the secondary bearing supporting, bearer ring has only A, B.If with three grades, level Four, Pyatyi planetary pinion piece, the corresponding level Four that realizes, the sliding bearing of Pyatyi even higher progression or rolling bearing.Bearing progression is many more, and relative velocity is low more, and the life-span is long more.

In a word, this patent provides a kind of novel speed reduction bearing device, comprise deceleration sliding bearing and deceleration rolling bearing, it is by mainshaft gear, the planetary pinion piece, the driven gear sleeve, the planet wheel shaft sleeve, fixed gear ring, rotating ring, stationary ring is formed, it is characterized in that: mainshaft gear (1) engagement drives planetary pinion piece (2) and goes up engagement rolling at fixed gear ring (3), on the planetary pinion piece (2) one or two, or three fixing coaxial gear engagement drive and (4) one in the coaxial driven gear sleeve of main shaft, or two, or three done equidirectional rotation, the axle of planetary pinion piece (2) drives with the concentric planetary pinion shaft sleeve (5) of main shaft and does equidirectional rotation, constitute spindle face (rotating ring), each driven gear sleeve section, the planet pin sleeve section, equidirectional step by step reduction of speed relative movement between the fixed wall (stationary ring), constitute sliding bearing between these relative movement faces, or rolling bearing.

Another feature is to select different velocity ratios, select the planetary pinion piece of different progression, and corresponding driven gear sleeve, realize from high-revolving main shaft to one-level, or two-stage, or three grades of driven gear sleeves, to the planetary pinion shaft sleeve, to the equidirectional reduction of speed relative movement between the stationary plane, between these equidirectional surface of revolution of reduction of speed step by step, constitute bearer ring, realize the traditional bearing structure, the progression that constitutes bearer ring is secondary, or three grades, or level Four, or Pyatyi, the speed that relatively rotates between the surface of contact at different levels normally spindle speed 1/2, or 1/3, or 1/4, or 1/5, can constitute secondary, or three grades, or level Four, or Pyatyi deceleration sliding bearing, also can constitute secondary, or three grades, or level Four, or Pyatyi deceleration rolling bearing.

Claims

1. novel speed reduction bearing device, comprise deceleration sliding bearing and deceleration rolling bearing, it is by mainshaft gear, the planetary pinion piece, the driven gear sleeve, the planet wheel shaft sleeve, fixed gear ring, rotating ring, stationary ring is formed, it is characterized in that: mainshaft gear (1) engagement drives planetary pinion piece (2) and goes up engagement rolling at fixed gear ring (3), on the planetary pinion piece (2) one or two, or three fixing coaxial gear engagement drive and (4) one in the coaxial driven gear sleeve of main shaft, or two, or three done equidirectional rotation, the axle of planetary pinion piece (2) drives with the concentric planetary pinion shaft sleeve (5) of main shaft and does equidirectional rotation, constitute spindle face, each driven gear sleeve section, the planet pin sleeve section, equidirectional step by step reduction of speed relative movement between the fixed wall, constitute sliding bearing between these relative movement faces, or rolling bearing.

2. speed reduction bearing according to claim 1 is characterized in that: select different velocity ratios, select the planetary pinion piece of different progression, and corresponding driven gear sleeve, realization from high-revolving main shaft to one-level, or two-stage, or three grades of driven gear sleeves, to the planetary pinion shaft sleeve, to the equidirectional reduction of speed relative movement between the stationary plane, between these equidirectional surface of revolution of reduction of speed step by step, constitute bearer ring, realize the traditional bearing structure, the progression that constitutes bearer ring is secondary, or three grades, or level Four, or Pyatyi, the speed that relatively rotates between the surface of contact at different levels normally spindle speed 1/2, or 1/3, or 1/4, or 1/5, can constitute secondary, or three grades, or level Four, or Pyatyi deceleration sliding bearing, also can constitute secondary, or three grades, or level Four, or Pyatyi deceleration rolling bearing.