CN201582351U

CN201582351U - Reducer with reverse blocking structure

Info

Publication number: CN201582351U
Application number: CN2009203501980U
Authority: CN
Inventors: 曹孝君; 孙晓岩; 李颖华; 李险峰; 张保森
Original assignee: BAODING HUIYANG AVIATION PROPELLER MANUFACTURING FACTORY
Current assignee: AVIC Huiyang Aviation Propeller Co Ltd
Priority date: 2009-12-29
Filing date: 2009-12-29
Publication date: 2010-09-15
Anticipated expiration: 2019-12-29

Abstract

The utility model discloses a reducer with a reverse blocking structure. The reducer comprises an input shaft, an output shaft and an intermediate shaft, wherein the input shaft, the output shaft and the intermediate shaft are linked through gears; a backstop including an inner ring and an outer ring is also arranged on the intermediate shaft; the outer ring is fixed on the upper end cover of the shaft hole of the intermediate shaft through a screw; and the inner ring is connected with the intermediate shaft through a key. Due to adoption of the structure, the utility model can prevent a blade from rotating in a negative direction due to external influence when the reducer is in a stopped state, so as to improve the work safety factor of equipment.

Description

Reverse closedown structure retarder

Technical field

The utility model relates to a kind of retarder, especially relates to a kind of reverse closedown structure retarder.

Background technique

At present; the power station direct air-cooling unit all needs to use the power station direct air-cooling retarder; and the power station direct air-cooling retarder generally is installed in the abominable working environment of high-altitude, cold; external interference is bigger; when retarder is in outage state; the blade of retarder can drive the retarder antiport under the effect of natural wind or other external force, increased unsafe factor for retarder and process system.

The model utility content

The purpose of this utility model provides a kind of reverse closedown structure retarder, can prevent that retarder blade when outage state is subjected to ectocine and reverse rotation, improves the peformance margin of equipment.

For achieving the above object, the utility model provides a kind of reverse closedown structure retarder, comprise input shaft, output shaft and jack shaft, link by gear between described input shaft, described output shaft and the described jack shaft, also be provided with non-return device on the described jack shaft, on the upper end cap of described jack shaft axis hole, described interior ring links to each other with described jack shaft by key by screw for ring and outer shroud in described non-return device comprises, described outer shroud.

Therefore, the utility model adopts the reverse closedown structure retarder of said structure, can prevent that retarder blade when outage state is subjected to ectocine and reverse rotation, improves the peformance margin of equipment.

Below by drawings and Examples, the technical solution of the utility model is described in further detail.

Description of drawings

Fig. 1 is the reverse closedown structure retarder of the utility model embodiment's a structural representation;

Fig. 2 is the structural representation of non-return device among the reverse closedown structure retarder of the utility model embodiment;

Fig. 3 is the plan view of non-return device among the reverse closedown structure retarder of the utility model embodiment;

Fig. 4 is the structure for amplifying schematic representation of non-return device mounting portion among the reverse closedown structure retarder of the utility model embodiment.

Embodiment

Fig. 1 is the reverse closedown structure retarder of the utility model embodiment's a structural representation, as shown in Figure 1, comprise input shaft 1, jack shaft 2 and output shaft 3, input shaft 1 is used for linking to each other with power equipment, output shaft 3 is used for linking to each other with wheel hub, input shaft 1, link by gear between jack shaft 2 and the output shaft 3, as can be seen from Figure 1, input shaft 1 is by first gear 4 and jack shaft 2 interlocks, jack shaft 2 is by second gear 5 and output shaft interlock, jack shaft is provided with non-return device 6 in the present embodiment, Fig. 2 is the structural representation of non-return device among the reverse closedown structure retarder of the utility model embodiment, Fig. 3 is the plan view of non-return device among the reverse closedown structure retarder of the utility model embodiment, as shown in Figures 2 and 3, ring 61 and outer shroud 62 in non-return device 6 comprises, Fig. 4 is the structure for amplifying schematic representation of non-return device mounting portion among the reverse closedown structure retarder of the utility model embodiment, as can be seen from Figure 4, the outer shroud 62 of non-return device 6 is fixed on the upper end cap 22 of jack shaft 2 axis holes by screw 21, the interior ring 61 of non-return device 6 links to each other with jack shaft 2 by key 63, and key 63 is fixed as linkage structure with non-return device 6 and jack shaft 2.When the equipment proper functioning; jack shaft 2 rotates together by the interior ring that key 63 drives non-return device 6; when blade is subjected to the external influence counter-rotating; reverse torque is delivered to jack shaft 2 by second gear 5; the interior ring 61 that jack shaft 2 just will drive non-return device 6 reverses together; but owing to self constructing of non-return device; in case interior ring 61 backward rotation; just with outer shroud 62 lockings together; and because outer shroud 62 is fixed on the upper end cap 22 of jack shaft 2 axis holes; can not rotate; so the opposition that jack shaft 2 is subjected to balances out, thereby reach the effect that stops the blade counter-rotating, solved phenomenon well in natural wind and the counter-rotating of ectocine effect lower blade; prevented that retarder blade when outage state is subjected to ectocine and reverse rotation, has improved the peformance margin of equipment.

Also can be provided with oil circuit 63 on the outer shroud 62 of non-return device 6, be preferably two oil circuits in the present embodiment, oil circuit 63 and corresponding the communicating of oil circuit on the reduction case, it is good lubricated to guarantee that non-return device has.

It should be noted that at last: above embodiment is only in order to explanation the technical solution of the utility model but not limit it, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement the technical solution of the utility model, and these modifications or be equal to replacement and also can not make amended technological scheme break away from the spirit and scope of technical solutions of the utility model.

Claims

1. a reverse closedown structure retarder comprises input shaft, output shaft and jack shaft, by the gear interlock, it is characterized in that: also be provided with non-return device on the described jack shaft between described input shaft, described output shaft and the described jack shaft.

2. reverse closedown structure retarder according to claim 1 is characterized in that: on the upper end cap of described jack shaft axis hole, described interior ring links to each other with described jack shaft by key by screw for ring and outer shroud in described non-return device comprises, described outer shroud.

3. reverse closedown structure retarder according to claim 2, it is characterized in that: the outer shroud of described non-return device is provided with oil circuit.

4. reverse closedown structure retarder according to claim 3 is characterized in that: described oil circuit is two.