CN113431891A - Overhauling sealing structure of speed reducing device and implementation method - Google Patents
Overhauling sealing structure of speed reducing device and implementation method Download PDFInfo
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- CN113431891A CN113431891A CN202110908603.1A CN202110908603A CN113431891A CN 113431891 A CN113431891 A CN 113431891A CN 202110908603 A CN202110908603 A CN 202110908603A CN 113431891 A CN113431891 A CN 113431891A
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- overhaul
- gear pair
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- 238000007789 sealing Methods 0.000 title claims abstract description 120
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000012423 maintenance Methods 0.000 claims abstract description 69
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 238000007689 inspection Methods 0.000 claims description 16
- 230000009467 reduction Effects 0.000 claims description 16
- 241000244041 Pseudoterranova decipiens Species 0.000 claims description 7
- 230000008901 benefit Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
- Gear Transmission (AREA)
Abstract
The invention discloses a maintenance sealing structure of a speed reducing device and an implementation method, wherein the maintenance sealing structure comprises the following steps: the maintenance sealing sleeve is arranged on a transmission shaft of external equipment; the invention relates to a maintenance sealing worm wheel, which comprises a maintenance sealing worm wheel, a limiting mechanism and a speed reducer, wherein the inner wall of the maintenance sealing worm wheel is provided with an internal thread matched with a thread on the second side of the maintenance sealing sleeve, a maintenance sealing worm is positioned outside the maintenance sealing worm wheel and is meshed with the maintenance sealing worm wheel through a gear tooth, and the limiting mechanism is connected with a shell of the speed reducer through a fastener.
Description
Technical Field
The invention relates to the technical field of nuclear power refueling equipment, in particular to a maintenance sealing structure of a speed reducing device and an implementation method.
Background
The working condition environment of the nuclear power refueling equipment is relatively severe, the inner cavity of the nuclear power refueling equipment is communicated with the inner cavity of the pressure container, and radioactive gas is contained in the reactor. The transmission device on the upper part of the refueling device is used as a pressure boundary to prevent gas in the reactor from leaking. Due to the characteristic of low-speed and high-torque transmission of the refueling equipment, a transmission device of the refueling equipment is usually designed by combining a multi-stage cylindrical gear pair with a worm gear pair at a high reduction ratio.
Because the worm gear transmission is easy to generate heat and wear, the reliability of the worm gear transmission is poorer than that of the cylindrical gear transmission, and the maintenance period is correspondingly shorter. If the overall arrangement scheme of the shell of the traditional speed reducer is adopted, the maintenance difficulty is greatly increased, the time consumption for installation and disassembly is long, and the economic benefit is influenced. Therefore, the worm gear pair and the multi-stage cylindrical gear pair are considered to be arranged in a split mode, the worm gear pair and the multi-stage cylindrical gear pair need to be designed to be overhauled and sealed when being arranged in a split mode, the worm gear pair is used for independent overhaul, and the speed reducing device arranged in the worm gear pair and the multi-stage cylindrical gear pair in a split mode does not have effective overhaul seal in the prior art, so that independent overhaul of the worm gear pair is not facilitated.
Disclosure of Invention
The invention aims to provide an overhauling sealing structure of a speed reducing device and an implementing method thereof, and aims to solve the problems that in the prior art, the speed reducing device with a worm gear pair and a multi-stage cylindrical gear pair which are separately arranged does not have effective overhauling sealing, and the independent overhauling of the worm gear pair is not facilitated.
In order to achieve the purpose, the invention is realized by the following technical scheme:
an inspection and sealing structure of a reduction gear, comprising:
the maintenance sealing sleeve is arranged on a transmission shaft of external equipment;
the inner wall of the overhaul sealing worm wheel is provided with an internal thread matched with the thread on the second side of the overhaul sealing sleeve, the overhaul sealing worm wheel is arranged on the overhaul sealing sleeve, and the overhaul sealing worm wheel and the overhaul sealing sleeve are both positioned in the shell of the speed reducing device;
the maintenance sealing worm is positioned on the outer side of the maintenance sealing worm wheel and meshed with the gear teeth of the maintenance sealing worm wheel, a maintenance hole is formed in the shell of the speed reducing device, and the maintenance sealing worm is installed in the maintenance hole;
and the limiting mechanism is arranged on the second side of the maintenance sealing sleeve, the limiting mechanism is attached to the side wall of the maintenance sealing worm wheel, and the limiting mechanism is connected with the shell of the speed reducing device through a fastener.
Preferably, a plurality of limiting grooves are formed in the second side of the overhauling sealing sleeve along the axial direction, and a plurality of bosses matched with the limiting grooves are arranged on the limiting mechanism.
Preferably, the maintenance sealing sleeve, the maintenance sealing worm wheel and the limiting mechanism are coaxially arranged with the transmission shaft.
Preferably, the sealing member is a sealing ring, a groove matched with the sealing ring is formed in the first side of the overhauling sealing sleeve, and the sealing ring is installed in the groove.
Preferably, the deployment helix angle of the service seal worm is smaller than the friction angle of the contact between the service seal worm wheel and the service seal worm.
Preferably, the casing of the speed reducer comprises a cylindrical gear pair casing and a worm and gear pair casing connected with the cylindrical gear pair casing, a multi-stage cylindrical gear pair is installed in the cylindrical gear pair casing, a worm and gear pair connected with the multi-stage gear pair is installed in the worm and gear pair casing, the maintenance sealing sleeve is located at the joint of the multi-stage cylindrical gear pair and the worm and gear pair, and the maintenance hole is formed in the cylindrical gear pair casing.
Preferably, the end part of the access hole is provided with a cover plate, and the cover plate is connected with a shell bolt of the speed reducing device.
Preferably, an axial positioning mechanism is installed in the inspection hole, a through hole is formed in the axial positioning mechanism, one end of the inspection sealing worm penetrates through the through hole, and the inspection sealing worm is in clearance fit with the through hole.
Preferably, the fastener is one or any combination of a screw, a bolt and a stud.
In another aspect, the present invention further provides an implementation method of an overhaul sealing structure of a speed reduction device, and for the overhaul sealing structure of the speed reduction device, the implementation method includes:
step S1: carrying out the assembly of the overhaul seal;
step S2: when the speed reducer needs to be overhauled, the access hole is opened;
step S3: rotating the end of the service seal worm with a tool until the service seal worm cannot rotate;
step S4: and disassembling the shell of the speed reducing device and carrying out subsequent maintenance.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the maintenance sealing sleeve, the maintenance sealing worm wheel and the maintenance sealing worm are arranged on the shell of the speed reducer, and the maintenance sealing worm is rotated to realize the independent maintenance of the external worm gear speed reducer, so that the operation is convenient, the sealing performance is good, the device is convenient to mount and dismount, and the universality is stronger.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are an embodiment of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts according to the drawings:
fig. 1 is a schematic view of an inspection and sealing structure of a reduction gear according to an embodiment of the present invention;
fig. 2 is a cross-sectional view in the direction P-P of an inspection and sealing structure of the reduction gear according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a service seal bushing provided in accordance with an embodiment of the present invention;
FIG. 4 is a cross-sectional view taken along the direction M-M of a service seal bushing provided in accordance with an embodiment of the present invention;
FIG. 5 is a cross-sectional view of a spacing mechanism provided in accordance with an embodiment of the present invention;
fig. 6 is a right side view of a limiting mechanism according to an embodiment of the present invention.
Description of reference numerals: 1-maintenance sealing sleeve, 2-maintenance sealing worm gear, 3-maintenance sealing worm, 4-limiting mechanism, 5-transmission shaft, 6-shell, 101-sealing element, 102-thread, 103-groove, 104-limiting groove, 401-fastening element, 402-boss, 601-cylindrical gear pair box body, 602-worm gear pair box body, 6011-maintenance hole, 6012-cover plate and 6013-axial positioning mechanism.
Detailed Description
The inspection and sealing structure of the reduction gear according to the present invention will be described in further detail with reference to fig. 1 to 6 and the detailed description thereof. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are all used in a non-precise scale for the purpose of facilitating and distinctly aiding in the description of the embodiments of the present invention. To make the objects, features and advantages of the present invention comprehensible, reference is made to the accompanying drawings. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the implementation conditions of the present invention, so that the present invention has no technical significance, and any structural modification, ratio relationship change or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention.
In view of the reduction gear that sets up with the vice components of a whole that can function independently of multistage cylindrical gear pair does not have effectual maintenance among the prior art sealed, is unfavorable for the problem of overhauing alone the worm gear pair, and this embodiment provides a reduction gear's maintenance seal structure, includes:
the maintenance sealing sleeve comprises a maintenance sealing sleeve 1, wherein a sealing element 101 is arranged on a first side of the maintenance sealing sleeve 1, threads 102 are arranged on a side wall of a second side opposite to the first side, and the maintenance sealing sleeve 1 is arranged on a transmission shaft 5 of external equipment;
the inner wall of the overhaul sealing worm wheel 2 is provided with an internal thread matched with the thread on the second side of the overhaul sealing sleeve 1, the overhaul sealing worm wheel 2 is installed on the overhaul sealing sleeve 1, and the overhaul sealing worm wheel 2 and the overhaul sealing sleeve 1 are both positioned in the shell 6 of the speed reducing device;
the overhauling sealing worm 3 is positioned on the outer side of the overhauling sealing worm wheel 2 and is meshed with the gear teeth of the overhauling sealing worm wheel 2, an overhauling hole 6011 is formed in the shell 6 of the speed reducing device, and the overhauling sealing worm 3 is installed in the overhauling hole 6011;
A plurality of limiting grooves 104 are axially formed in the second side of the maintenance sealing sleeve 1, and a plurality of bosses 402 matched with the plurality of limiting grooves 104 are arranged on the limiting mechanism 4.
The maintenance sealing sleeve 1, the maintenance sealing worm wheel 2 and the limiting mechanism 4 are coaxially arranged with the transmission shaft 5.
The sealing member 101 is a sealing ring, a groove 103 matched with the sealing ring is formed in the first side of the overhauling sealing sleeve 1, and the sealing ring is installed in the groove 103.
The expansion spiral angle of the overhaul sealing worm 3 is smaller than the friction angle of contact between the overhaul sealing worm wheel 2 and the overhaul sealing worm 3, so that the overhaul sealing worm wheel 2 and the overhaul sealing worm 3 realize self-locking, and the overhaul sealing worm is convenient to use in overhaul sealing.
The casing 6 of the speed reducer comprises a cylindrical gear pair casing 601 and a worm and gear pair casing 602 connected with the cylindrical gear pair casing 601, a multi-stage cylindrical gear pair is installed in the cylindrical gear pair casing 601, a worm and gear pair connected with the multi-stage gear pair is installed in the worm and gear pair casing 602, the maintenance sealing sleeve 1 is located at the joint of the multi-stage cylindrical gear pair and the worm and gear pair, and the maintenance hole 6011 is opened in the cylindrical gear pair casing 601.
A cover plate 6012 is arranged at the end of the manhole 6011, and the cover plate 6012 is connected with a casing 6 of the speed reducer through bolts.
Install axial positioning mechanism 6013 in access hole 6011, the through-hole has been seted up on the axial positioning mechanism 6013, the one end of overhauing sealed worm 3 with the through-hole cooperation, the other end of overhauing sealed worm 3 with overhauing sealed worm wheel 2 and connecting, overhauing sealed worm 3 and running through the through-hole, through-hole department are provided with the sealed that seal structure is used for overhauing sealed worm wheel 2.
The fastener 401 is one or any combination of a screw, a bolt and a stud.
The embodiment also provides an implementation method of the overhaul sealing structure of the speed reducing device, and aiming at any one of the overhaul sealing structures of the speed reducing device, the implementation method comprises the following steps:
step S1: carrying out the assembly of the overhaul seal;
step S2: when the speed reducer needs to be overhauled, the overhaul hole 6011 is opened;
step S3: rotating the end of the maintenance sealing worm 3 by using a tool until the maintenance sealing worm 3 cannot rotate;
step S4: the casing 6 of the reduction gear is disassembled for subsequent maintenance.
This embodiment is when using, earlier overhauls sealed according to as shown the assembly completion, when needs overhauld worm gear pair reducing gear box, dismantles apron 6012 from cylindrical gear pair box 601, and manual or with the help of the rotatory tip of overhauing sealed worm 3 of tool spanner until overhauing sealed worm 3 and can not rotate, overhauls sealed this moment and has realized sealed effect, can dismantle worm gear pair box 602 to carry out subsequent maintenance.
To sum up, this embodiment is through setting up on decelerator's casing 6 and overhauing sealed sleeve pipe 1, overhauing sealed worm wheel 2, overhauing sealed worm 3, rotates to overhaul sealed worm 3 and realizes overhauing alone of outside worm gear reducing gear box, and convenient operation, sealing performance are good, and the device installation is convenient with the dismantlement, and the commonality is stronger, has better economic benefits.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In the description of the present invention, it is to be understood that the terms "center," "height," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (10)
1. The utility model provides a decelerator's maintenance seal structure which characterized in that includes:
the maintenance sealing sleeve is arranged on a transmission shaft of external equipment;
the inner wall of the overhaul sealing worm wheel is provided with an internal thread matched with the thread on the second side of the overhaul sealing sleeve, the overhaul sealing worm wheel is arranged on the overhaul sealing sleeve, and the overhaul sealing worm wheel and the overhaul sealing sleeve are both positioned in the shell of the speed reducing device;
the maintenance sealing worm is positioned on the outer side of the maintenance sealing worm wheel and meshed with the gear teeth of the maintenance sealing worm wheel, a maintenance hole is formed in the shell of the speed reducing device, and the maintenance sealing worm is installed in the maintenance hole;
and the limiting mechanism is arranged on the second side of the maintenance sealing sleeve, the limiting mechanism is attached to the side wall of the maintenance sealing worm wheel, and the limiting mechanism is connected with the shell of the speed reducing device through a fastener.
2. An overhaul sealing structure of a speed reducer according to claim 1, wherein the second side of the overhaul sealing sleeve is provided with a plurality of limiting grooves along the axial direction, and the limiting mechanism is provided with a plurality of bosses which are matched with the plurality of limiting grooves.
3. An inspection and sealing structure of a reduction gear according to claim 2, wherein the inspection and sealing sleeve, the inspection and sealing worm wheel and the limiting mechanism are coaxially provided with the transmission shaft.
4. The maintenance seal structure of a reduction gear according to claim 1, wherein the sealing member is a seal ring, a groove for fitting the seal ring is formed on the first side of the maintenance seal sleeve, and the seal ring is installed in the groove.
5. An inspection and sealing structure of a reduction gear according to claim 1, wherein a deployment helix angle of the inspection and sealing worm is smaller than a friction angle of contact between the inspection and sealing worm wheel and the inspection and sealing worm.
6. The maintenance sealing structure of the speed reducer according to claim 1, wherein the casing of the speed reducer comprises a cylindrical gear pair box and a worm gear pair box connected with the cylindrical gear pair box, a multi-stage cylindrical gear pair is installed in the cylindrical gear pair box, a worm gear pair connected with the multi-stage gear pair is installed in the worm gear pair box, the maintenance sealing sleeve is located at the joint of the multi-stage cylindrical gear pair and the worm gear pair, and the maintenance hole is formed in the cylindrical gear pair box.
7. An inspection and sealing structure of a reduction gear according to claim 1, wherein a cover plate is provided at an end portion of the inspection hole, and the cover plate is bolted to a housing of the reduction gear.
8. An overhaul sealing structure of a speed reducer according to claim 1, wherein an axial positioning mechanism is mounted in the overhaul hole, the axial positioning mechanism is provided with a through hole, and one end of the overhaul sealing worm is matched with the through hole.
9. An overhaul seal structure of a reduction gear according to claim 1 wherein the fastener is one or any combination of a screw, a bolt and a stud.
10. An implementation method of a maintenance seal structure of a speed reducer, which is characterized in that the implementation method of the maintenance seal structure of the speed reducer according to any one of claims 1 to 9 comprises the following steps:
step S1: carrying out the assembly of the overhaul seal;
step S2: when the speed reducer needs to be overhauled, the access hole is opened;
step S3: rotating the end of the service seal worm with a tool until the service seal worm cannot rotate;
step S4: and disassembling the shell of the speed reducing device and carrying out subsequent maintenance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110908603.1A CN113431891B (en) | 2021-08-09 | 2021-08-09 | Maintenance sealing structure of speed reducer and implementation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110908603.1A CN113431891B (en) | 2021-08-09 | 2021-08-09 | Maintenance sealing structure of speed reducer and implementation method |
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| Publication Number | Publication Date |
|---|---|
| CN113431891A true CN113431891A (en) | 2021-09-24 |
| CN113431891B CN113431891B (en) | 2024-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110908603.1A Active CN113431891B (en) | 2021-08-09 | 2021-08-09 | Maintenance sealing structure of speed reducer and implementation method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211082770U (en) * | 2019-10-30 | 2020-07-24 | 上海胜华波汽车电器有限公司 | Worm gear and worm speed reducing mechanism |
| CN112562873A (en) * | 2020-12-24 | 2021-03-26 | 上海电气核电设备有限公司 | Split mechanical sealing device and method for nuclear power CRDM pipe seat |
| CN213711749U (en) * | 2020-10-15 | 2021-07-16 | 佛山市尚为传动科技有限公司 | Special worm gear speed reducer goes up and down |
| CN215334342U (en) * | 2021-08-09 | 2021-12-28 | 上海电气核电设备有限公司 | Maintenance sealing structure of speed reducer |
-
2021
- 2021-08-09 CN CN202110908603.1A patent/CN113431891B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211082770U (en) * | 2019-10-30 | 2020-07-24 | 上海胜华波汽车电器有限公司 | Worm gear and worm speed reducing mechanism |
| CN213711749U (en) * | 2020-10-15 | 2021-07-16 | 佛山市尚为传动科技有限公司 | Special worm gear speed reducer goes up and down |
| CN112562873A (en) * | 2020-12-24 | 2021-03-26 | 上海电气核电设备有限公司 | Split mechanical sealing device and method for nuclear power CRDM pipe seat |
| CN215334342U (en) * | 2021-08-09 | 2021-12-28 | 上海电气核电设备有限公司 | Maintenance sealing structure of speed reducer |
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| Publication number | Publication date |
|---|---|
| CN113431891B (en) | 2024-07-09 |
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