CN104819216A

CN104819216A - Supporting device for axial movement of rotating shaft

Info

Publication number: CN104819216A
Application number: CN201510137278.8A
Authority: CN
Inventors: 叶团结
Original assignee: ANHUI ANFENG FAN Co Ltd
Current assignee: ANHUI ANFENG FAN Co Ltd
Priority date: 2014-05-09
Filing date: 2015-03-26
Publication date: 2015-08-05
Anticipated expiration: 2035-03-26
Also published as: CN104061245A; CN104819216B

Abstract

The invention belongs to the technical field of design of auxiliary devices for bearing running and specifically relates to a supporting device for axial movement of a rotating shaft. The device comprises the rotating shaft and a bearing seat, wherein a bearing arranged on the rotating shaft and a bearing mounting hole arranged in the bearing seat are in clearance fit; sealing rings are arranged between the bearing and the bearing seat along the axial direction at intervals; an annular sleeve-shaped chamber is formed by enclosure of two sealing rings, the bearing and the bearing seat; a channel is arranged on the bearing seat; the inner end of the channel is communicated with the annular sleeve-shaped chamber; and the outer end of the channel is connected with a pressure source. Due to the clearance fit between the bearing and the bearing seat, when the length of the rotating shaft varies with the changes of ambient temperature, the axial movement of the bearing is not hindered by the bearing seat, and the rotating shaft can realize axial extension and contraction; when pressure water or pressure oil is introduced into the interior of the annular sleeve-shaped chamber, the pressure water or the pressure oil can exert supporting and fixing effects on the moving rotating shaft so as to prevent the rotating shaft from waggling; thus, supporting rigidity and stability of the bearing are improved.

Description

Rotating shaft moves axially support device

Technical field

The invention belongs to bearing operation auxiliary device design field, particularly a kind of rotating shaft moves axially support device.

Background technique

Current, very extensive in the application of mechanical field shaft, rotating shaft is in real-world operation process, due to the change of ambient temperature and equipment working medium temperature, because the length of rotating shaft of expanding with heat and contract with cold also can be stretched, and rotating shaft is connected with the bearing be arranged on bearing support, bearing support can make the length change of rotating shaft be restricted, therefore rotating shaft can bend, and the axial force that bearing support is subject to also can increase, change the Operation Conditions of rotating shaft, reduce the working life of rotating shaft, bearing and bearing support.

Summary of the invention

A kind of rotating shaft that can improve rotating shaft Operation Conditions is the object of the present invention is to provide to move axially support device.

In order to realize above object, the technical solution used in the present invention is: a kind of rotating shaft moves axially support device, comprise rotating shaft and bearing support, it is Spielpassung between bearing mounting hole on the bearing that described rotating shaft is arranged and bearing support, between bearing and bearing support, on axial direction, interval arranges seal ring, two seal rings, between bearing and bearing support, enclose the chamber of loop overlapping shape, bearing support arranges path, the inner end of path and the chamber of described loop overlapping shape, the outer end of path is connected with pressure source.

Compared with prior art, there is following technique effect in the present invention: because of Spielpassung between bearing and bearing support, when because of external temperature change, length changes in rotating shaft, bearing support can not produce obstruction to moving axially of bearing, and then rotating shaft can realize axial stretching, in addition, when passing into press water or pressure oil in the chamber of loop overlapping shape, press water or pressure oil can play support fixation to the rotating shaft of movement, prevent rocking of rotating shaft, thus improve the running steady working condition of rotating shaft.

Accompanying drawing explanation

Fig. 1 is using state partial sectional view of the present invention;

Fig. 2 is the enlarged view at A position in Fig. 1;

Fig. 3 is the partial sectional view of pipeloop.

Embodiment

Referring to Fig. 1-Fig. 3, the invention will be further described.

A kind of rotating shaft moves axially support device, comprise rotating shaft 10 and bearing support 20, in described rotating shaft 10 arrange bearing 30 and bearing support 20 on bearing mounting hole between be Spielpassung, between bearing 30 and bearing support 20, on axial direction, interval arranges seal ring 40, two seal rings 40, between bearing 30 and bearing support 20, enclose the chamber of loop overlapping shape, bearing support 20 is arranged path 21, the inner end of path 21 and the chamber of described loop overlapping shape, the outer end of path 21 is connected with pressure source.When rotating shaft 10 is rotated in bearing support 20 together with bearing 30, if external temperature change causes the length change of rotating shaft 10, because of Spielpassung between bearing 30 and bearing support 20, bearing support 20 can not countershaft 10 length change produce hinder, rotating shaft 10 can realize axial stretching freely, the axial force that bearing support 20 is subject to also can weaken, in addition, when passing into press water or pressure oil in the chamber of loop overlapping shape, press water or pressure oil mineralization pressure water ring or pressure oil ring in the chamber of loop overlapping shape support fixation to the rotating shaft 10 of movement, guarantee that the radial position of rotating shaft 10 is fixed, prevent rotating shaft 10 from the process of rotating, radial displacement occurring, thus improve Operation Conditions and the stability of rotating shaft.

As further preferred version: the pipeloop 50 of the outer sheathed connection one in outer ring 31 of described bearing 30 and the annular of its coaxial core, the periphery wall stage casing of pipeloop 50 is offered the groove 51 of annular, the two ends place of groove 51 arranges seal ring 40 respectively, two seal rings 40, encloses the chamber of described loop overlapping shape between groove 51 and the inwall of bearing support 20.Design a pipeloop 50 be set in outside outer ring 31 separately in addition, and on pipeloop 50, offer the groove 51 forming loop overlapping shape chamber, and avoid directly offering groove 51 on the outer ring 31 of bearing 30, the bearing 30 can directly purchased as standard piece directly utilizes, and the processing cost of pipeloop 50 is lower.

The containing groove 52 with the annular of bearing 20 coaxial core is arranged at the two ends of the periphery wall upper groove 51 of described pipeloop 50 respectively, and seal ring 40 is placed in containing groove 52.Because groove 51 is arranged in the stage casing of pipeloop 50, when being full of press water or pressure oil in loop overlapping shape chamber, can producing uniform pressure, no matter whether stretch to the periphery wall of bearing 30, the operation of rotating shaft 10 is all very stable.

One end place of the periphery wall of described pipeloop 50 offers bar-shaped trough 53, the flute length of bar-shaped trough 53 is arranged along axial length direction, two walls parallel are arranged, the outer side slot end of bar-shaped trough 53 and bottom land extend to the end of pipeloop 50, hole is offered in position corresponding with bar-shaped trough 53 on bearing support 20, in one end patchhole of locating stud 60, the other end to be hung in bar-shaped trough 53 and to move vertically for track with bar-shaped trough 53.The setting of locating stud 60 can prevent the outer ring 31 of bearing 30 from rotating when following rotating shaft 10 and moving, and in addition, locating stud 60 can realize moving axially in bar-shaped trough 53, and namely locating stud 60 also can not limit bearing 30 and follows rotating shaft 10 and move axially.

Described bearing support 20 arranges grease channel 22, and the injection direction of the nozzle of the end setting of grease channel 22, just to the ball 32 in bearing 30, so just can realize, to the good lubrication of ball 32 in bearing 30, increasing work efficiency.

Claims

1. a rotating shaft moves axially support device, comprise rotating shaft (10) and bearing support (20), it is characterized in that: be Spielpassung between the upper bearing (30) arranged of described rotating shaft (10) and the bearing mounting hole on bearing support (20), between bearing (30) and bearing support (20), on axial direction, interval arranges seal ring (40), two seal rings (40), the chamber of loop overlapping shape is enclosed between bearing (30) and bearing support (20), bearing support (20) is arranged path (21), the inner end of path (21) and the chamber of described loop overlapping shape, the outer end of path (21) is connected with pressure source.

2. rotating shaft according to claim 1 moves axially support device, it is characterized in that: outer ring (31) the sheathed connection one outward of described bearing (30) and the pipeloop (50) of the annular of its coaxial core, the periphery wall stage casing of pipeloop (50) is offered the groove (51) of annular, the two ends place of groove (51) arranges seal ring (40) respectively, two seal rings (40), encloses the chamber of described loop overlapping shape between groove (51) and the inwall of bearing support (20).

3. rotating shaft according to claim 2 moves axially support device, it is characterized in that: the containing groove (52) with the annular of bearing (30) coaxial core is arranged at the two ends of the periphery wall upper groove (51) of described pipeloop (50) respectively, and seal ring (40) is placed in containing groove (52).

4. rotating shaft according to claim 3 moves axially support device, it is characterized in that: one end place of the periphery wall of described pipeloop (50) offers bar-shaped trough (53), the flute length of bar-shaped trough (53) is arranged along axial length direction, two walls parallel are arranged, the outer side slot end of bar-shaped trough (53) and bottom land extend to the end of pipeloop (50), hole is offered in the upper position corresponding with bar-shaped trough (53) of bearing support (20), in one end patchhole of locating stud (60), the other end to be hung in bar-shaped trough (53) and with bar-shaped trough (53) for track moves vertically.

5. rotating shaft according to claim 4 moves axially support device, it is characterized in that: described bearing support (20) is arranged grease channel (22), the injection direction of the nozzle of the end setting of grease channel (22) is just to the ball (32) in bearing (30).