CN203604270U - Cooling and micro-motion abrasion preventing structure of counter-rotating local fan bearing - Google Patents
Cooling and micro-motion abrasion preventing structure of counter-rotating local fan bearing Download PDFInfo
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- CN203604270U CN203604270U CN201320767029.3U CN201320767029U CN203604270U CN 203604270 U CN203604270 U CN 203604270U CN 201320767029 U CN201320767029 U CN 201320767029U CN 203604270 U CN203604270 U CN 203604270U
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Abstract
The utility model discloses a cooling and micro-motion abrasion preventing structure of a counter-rotating local fan bearing. The Cooling and micro-motion abrasion preventing structure comprises a fan outer cylinder, an air inlet flow collecting cylinder, an air outlet diffusion cylinder and a fan motor, wherein space distances exist between the air inlet flow collecting cylinder and a fan motor shell and between the air outlet diffusion cylinder and the fan motor shell in the axial direction, the center of the round head of the air inlet flow collecting cylinder and the center of the round head of the air outlet diffusion cylinder are provided with an air passing hole, a first nut is fixedly arranged on the inner side of the air passing hole, and the first nut and the air passing hole are concentric. The end face of a non-shaft extending end of a fan motor rotor stretches out of a bearing outer cover of the fan motor, and the shaft end face is provided with a central hole; a fixing rod penetrates through the first nut on the air inlet flow collecting cylinder and the round head of the air outlet diffusion cylinder, the fixing rod is inserted into the air inlet flow collecting cylinder and the air outlet diffusion cylinder, and one end, provided with a conical rubber block, of the fixing rod abuts against the central hole in the fan motor rotor. The cooling and micro-motion abrasion preventing structure is simple in structure, cooling performance of the bearing is good, assembling and disassembling convenience is achieved, and performance of a counter-rotating local fan is not affected.
Description
Technical field
The utility model belongs to booster technical field, relates in particular to a kind of to revolving the cooling and anti-fretting wear structure of local ventilation machine bearing.
Background technique
Be widely used a kind of booster in coal production to revolving booster, its operational reliability is directly connected to the safety in production in colliery.Adopt the structure of electric machine built-in in the runner of ventilator inside to revolving booster, the shell of motor is the inner flow passage wall of blower fan.The axial force that when at present the non-shaft stretching end rolling bearing of fan motor all bears the radial force of rotor and fan operation, impeller produces, it is large that bearing bears load, and bearing working temperature is high.Be that the air intake afflux cylinder of one-level blower fan front end is directly connected with the shell of motor to revolving the structure of booster, the air-out diffusion cylinder of secondary blower fan rear end is directly connected with the shell of motor, causes the non-shaft stretching end rolling bearing of fan motor in the heat dissipation environment without convection circulation.The non-shaft stretching end rolling bearing self-temperature of fan motor is high and in the heat dissipation environment without convection circulation, causes bearing lubrication to be lost efficacy, and then causes burning in of bearing, has had a strong impact on the safety in production in colliery.Install far away to revolving booster from the mine that dispatches from the factory, fan motor is constantly subject to the impact of jolting, and at present because of the structural design reason to revolving booster, cannot avoid fan motor rotor can not rotate and axial motion in transportation and installation process, cause fan motor bearing to produce fretting wear, and then cause motor bearings to break down in running, and cause blower fan out of service, have a strong impact on the safety in production in colliery.In booster structural design, there is no method and can reduce bearing temperature and avoid bearing fretting wear revolving at present, therefore lower to revolving the functional reliability of booster.
Model utility content
The utility model is in order to solve the high problem of rolling bearing temperature to revolving booster and to avoid bearing fretting wear, not affecting in revolving booster performance, provide a kind of simple in structure, bearing perfect heat-dissipating, operational reliability is high, and installation and removal are easily to revolving the cooling and anti-fretting wear structure of local ventilation machine bearing.
For solving the problems of the technologies described above, the utility model adopts following technological scheme: a kind of to revolving the cooling and anti-fretting wear structure of local ventilation machine bearing, it comprises ventilator urceolus, be arranged on air intake afflux cylinder and the air-out diffusion cylinder at ventilator urceolus two ends, be arranged on the fan motor of ventilator urceolus inside, described air intake afflux cylinder and air-out diffusion cylinder and fan motor casing are provided with space length at axial direction, the rounded nose center of air intake afflux cylinder and air-out diffusion cylinder offers air inlet/outlet hole, inner side, wind hole is fixedly installed the first nut, the first nut is concentric with wind hole, the non-shaft stretching end axial end of fan motor rotor is stretched out the bearing end cover of fan motor, and axial end is provided with center hole, in the first nut of the rounded nose of air intake afflux cylinder and air-out diffusion cylinder, pass and have fixing rod, fixing rod inserts the inside of air intake afflux cylinder and air-out diffusion cylinder, described fixing rod is made up of connecting rod, the cone rubber piece that is arranged on connecting rod one end, the screw rod that is fixedly installed on the connecting rod the other end, screw rod on fixing rod screws in the first nut, and the epitrochanterian center hole of fan motor is withstood in the one end that is provided with cone rubber piece on fixing rod.
The tapering of described cone rubber piece is identical with the tapering of the epitrochanterian center hole of fan motor.
The position that is positioned at air intake afflux cylinder and air-out diffusion cylinder outside on described screw rod is provided with the second nut.
The first described nut-welding is in inner side, wind hole, and screw rod and connecting rod are welded to connect.
The beneficial effects of the utility model are:
1, the utility model all leaves suitable space length at air intake afflux cylinder and air-out diffusion cylinder and fan motor casing at axial direction, and has air inlet/outlet hole at the rounded nose center of air intake afflux cylinder and air-out diffusion cylinder.When to revolving booster when work, because of the pressure field at air inlet/outlet hole place and air intake afflux cylinder, air-out diffusion cylinder different from the pressure field in gap, fan motor casing place, between this two place, there is Air Flow, make near the air of bearing obtain pump circulation, thereby strengthen the cooling of bearing, reduce bearing running temperature, improved the functional reliability of booster;
2. the non-shaft stretching end axial end of fan motor rotor is stretched out bearing end cover, to utilize axle to add the center hole of processing in axial end man-hour as the positioning hole that prevents axle play, reduce the amount of finish of fan motor rotor, and made the fixed structure of fan motor rotor simple;
3. the rounded nose center of air intake afflux cylinder and air-out diffusion cylinder has air inlet/outlet hole, and inner side, hole is fixedly installed first nut concentric with hole.One end of fixing rod is provided with cone rubber piece, and the other end is fixedly connected with screw rod.The inside that when installation, fixing rod inserts air intake afflux cylinder and air-out diffusion cylinder by the first nut of the rounded nose of air intake afflux cylinder and air-out diffusion cylinder, after the screw rod on fixing rod screws in the first nut on air intake afflux cylinder and air-out diffusion cylinder and screws, the epitrochanterian center hole of fan motor is tightly withstood in one end that cone rubber piece is installed on fixing rod.The tapering of cone rubber piece is consistent with the tapering of rotor center hole, utilize the elasticity of cone rubber piece and the stiction of cone rubber piece and fan motor rotor, can avoid fan motor rotor being subject to jolting when impact in transportation and installation process to revolving booster, the small movements of the bearing generation axial and circumferential of fan motor, thus the fretting wear of bearing avoided;
4. after the first nut on fixing rod and air intake afflux cylinder and air-out diffusion cylinder screws, be exposed at the second nut assembling on the screw thread of air intake afflux cylinder and air-out diffusion cylinder outside at screw rod, can utilize double nut locking principle that fixing rod is locked, avoid fixing rod loosening to occurring in revolving booster transportation and installation process, thereby guarantee the anti-bearing fretting wear effect of fixing rod;
5. when completing after installation revolving booster, the second nut of air intake afflux cylinder and air-out diffusion cylinder outside is pulled down, then fixing rod rotation is taken out, get final product entry into service to revolving booster.Fixing rod easy removal.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the enlarged view at A place in Fig. 1;
Fig. 3 is the cooling blast schematic diagram that the utility model removes the bearing cooling structure after fixing rod;
Fig. 4 is the structural representation of fixing rod in the utility model.
Embodiment
As shown in Figures 1 to 4, the utility model comprises ventilator urceolus 3, be arranged on air intake afflux cylinder 2 and the air-out diffusion cylinder 7 at ventilator urceolus 3 two ends, be arranged on the fan motor of ventilator urceolus 3 inside, air intake afflux cylinder 2 and air-out diffusion cylinder 7 are provided with space length with fan motor casing 6 at axial direction, the rounded nose center of air intake afflux cylinder 2 and air-out diffusion cylinder 7 offers air inlet/outlet hole, as shown in Figure 2 when to revolving booster when work, because of pressure field and the air intake afflux cylinder 2 at air inlet/outlet hole place, air-out diffusion cylinder 7 is different from the pressure field in casing 6 gaps, place of fan motor, between this two place, there is Air Flow, make near bearing 4 air obtain pump circulation, thereby strengthen the cooling of bearing 4, bearing 4 running temperatures are reduced, improve revolving the functional reliability of booster.
Inner side, wind hole is welded with the first nut 8, the first nut 8 is concentric with wind hole, the non-shaft stretching end axial end of fan motor rotor 5 is stretched out the bearing end cover of fan motor, and axial end is provided with center hole 10, center hole 10 is as the positioning hole that prevents axle play, reduce the amount of finish of fan motor rotor 5, and made the fixed structure of fan motor rotor 5 simple.
In the first nut 8 of the rounded nose of air intake afflux cylinder 2 and air-out diffusion cylinder 7, pass and have fixing rod 1, fixing rod 1 is by connecting rod 1-2, be arranged on the cone rubber piece 1-3 of connecting rod 1-2 one end, be welded on the screw rod 1-1 composition of the connecting rod the other end, the inside that when installation, fixing rod 1 inserts air intake afflux cylinder 2 and air-out diffusion cylinder 7 by the first nut 8 of the rounded nose of air intake afflux cylinder 2 and air-out diffusion cylinder 7, after the screw rod 1-1 on fixing rod 1 screws in the first nut 8 on air intake afflux cylinder 2 and air-out diffusion cylinder 7 and screws, the center hole 10 on fan motor rotor 5 is tightly withstood in one end that cone rubber piece 1-3 is installed on fixing rod 1.The tapering of cone rubber piece 1-3 is consistent with the tapering of the center hole 10 of rotor 5, utilize the elasticity of cone rubber piece 1-3 and the stiction of cone rubber piece 1-3 and fan motor rotor 5, can avoid fan motor rotor 5 being subject to jolting when impact in transportation and installation process to revolving booster, there is the small movements of axial and circumferential in the bearing 4 of fan motor, thereby avoids the fretting wear of bearing 4.
After fixing rod 1 screws with the first nut 8 on air intake afflux cylinder 2 and air-out diffusion cylinder 7, be exposed at the second nut 9 assembling on the screw thread of air intake afflux cylinder 2 and air-out diffusion cylinder 7 outsides at screw rod 1-1, can utilize double nut locking principle that fixing rod 1 is locked, avoid fixing rod 1 to occur becoming flexible revolving in booster transportation and installation process, thereby guarantee the anti-bearing fretting wear effect of fixing rod 1.
When completing after installation revolving booster, the second nut 9 of air intake afflux cylinder 2 and air-out diffusion cylinder 7 outsides is pulled down, then fixing rod 1 is rotated to taking-up, get final product entry into service to revolving booster, fixing rod 1 easy removal.
Above embodiment is the unrestricted the technical solution of the utility model in order to explanation only, although the utility model is had been described in detail with reference to above-described embodiment, those of ordinary skill in the art is to be understood that: still can modify or be equal to replacement the utility model, and not departing from any modification or partial replacement of spirit and scope of the present utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (4)
1. one kind to revolving the cooling and anti-fretting wear structure of local ventilation machine bearing, it comprises ventilator urceolus, be arranged on air intake afflux cylinder and the air-out diffusion cylinder at ventilator urceolus two ends, be arranged on the fan motor of ventilator urceolus inside, it is characterized in that: described air intake afflux cylinder and air-out diffusion cylinder and fan motor casing are provided with space length at axial direction, the rounded nose center of air intake afflux cylinder and air-out diffusion cylinder offers air inlet/outlet hole, inner side, wind hole is fixedly installed the first nut, and the first nut is concentric with wind hole; The non-shaft stretching end axial end of fan motor rotor is stretched out the bearing end cover of fan motor, and axial end is provided with center hole; In the first nut of the rounded nose of air intake afflux cylinder and air-out diffusion cylinder, pass and have fixing rod, fixing rod inserts the inside of air intake afflux cylinder and air-out diffusion cylinder, described fixing rod is made up of connecting rod, the cone rubber piece that is arranged on connecting rod one end, the screw rod that is fixedly installed on the connecting rod the other end, screw rod on fixing rod screws in the first nut, and the epitrochanterian center hole of fan motor is withstood in the one end that is provided with cone rubber piece on fixing rod.
2. according to claim 1 to revolving the cooling and anti-fretting wear structure of local ventilation machine bearing, it is characterized in that: the tapering of described cone rubber piece is identical with the tapering of the epitrochanterian center hole of fan motor.
3. according to claim 1 to revolving the cooling and anti-fretting wear structure of local ventilation machine bearing, it is characterized in that: the position that is positioned at air intake afflux cylinder and air-out diffusion cylinder outside on described screw rod is provided with the second nut.
According to described in claim 1-3 any one to revolving the cooling and anti-fretting wear structure of local ventilation machine bearing, it is characterized in that: the first described nut-welding is in wind hole inner side, and screw rod and connecting rod are welded to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320767029.3U CN203604270U (en) | 2013-11-29 | 2013-11-29 | Cooling and micro-motion abrasion preventing structure of counter-rotating local fan bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320767029.3U CN203604270U (en) | 2013-11-29 | 2013-11-29 | Cooling and micro-motion abrasion preventing structure of counter-rotating local fan bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203604270U true CN203604270U (en) | 2014-05-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320767029.3U Withdrawn - After Issue CN203604270U (en) | 2013-11-29 | 2013-11-29 | Cooling and micro-motion abrasion preventing structure of counter-rotating local fan bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203604270U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591055A (en) * | 2013-11-29 | 2014-02-19 | 南阳防爆集团股份有限公司 | Cooling and fretting wear preventing structure of counter-rotating local ventilator bearing |
-
2013
- 2013-11-29 CN CN201320767029.3U patent/CN203604270U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591055A (en) * | 2013-11-29 | 2014-02-19 | 南阳防爆集团股份有限公司 | Cooling and fretting wear preventing structure of counter-rotating local ventilator bearing |
| CN103591055B (en) * | 2013-11-29 | 2016-02-17 | 南阳防爆集团股份有限公司 | A kind of to revolving the cooling of local ventilation machine bearing and anti-fretting wear structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140521 Effective date of abandoning: 20160217 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |