CN2870107Y - Direction-changing drive mechanism of combined loaded bridging switch - Google Patents
Direction-changing drive mechanism of combined loaded bridging switch Download PDFInfo
- Publication number
- CN2870107Y CN2870107Y CN 200520046566 CN200520046566U CN2870107Y CN 2870107 Y CN2870107 Y CN 2870107Y CN 200520046566 CN200520046566 CN 200520046566 CN 200520046566 U CN200520046566 U CN 200520046566U CN 2870107 Y CN2870107 Y CN 2870107Y
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- bevel gear
- break
- transmission mechanism
- bearing bracket
- drive shaft
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Abstract
The utility model discloses a steering drive mechanism of combined type on load tap switch, which comprises a horizontal drive shaft, bevel pinion and gear box on horizontal drive shaft, bevel gear engaged with bevel pinion, drive shaft fixed with bevel gear; the utility model has advantages of a safety protection mechanism, said safety protection mechanism includes shaft sleeve, an intermediate bearing pedestal, an oil seal; said shaft sleeve is arranged in bevel gear underpart, this shaft sleeve is provided with groove in the middle; said intermediate bearing pedestal is arranged on gear box bottom; said oil seal is arranged in the clearance between intermediate bearing pedestal and drive shaft. Shaft sleeve is added on bevel gear underpart in steering drive mechanism on upper part of on load tap switch, groove is designed on this shaft sleeve, therefore a weak link is formed. When certain downstream mechanism of this switch is blocked, torsional force is exceeds setpoint, this weak link is twisted off, power will not be driven down, so as to avoid accident.
Description
Technical field
The utility model relates to the powerdriven break-in transmission mechanism of a kind of on load tap changer.
Background technology
On load tap changer is the vitals of power transformer, and its effect is the height of control power transformer output voltage under situation about not having a power failure.Its power of carrying out action is from motor and drive system thereof, and the power of transmission part within it is two-way, and one the tunnel connects tap selector, and another road connects diverter switch.
Existing widely used on load tap changer, the top break-in transmission mechanism of its power as shown in Figure 1, the power transmission shaft 15 that it comprises a horizontal drive shaft 11, be located at bevel pinion 12 on the horizontal drive shaft and gear box 13, be connected with the bevel gear wheel 14 of bevel pinion engagement, with bevel gear wheel; Its operation principle is: pass to bevel pinion from the power that motor transmits through small coning gear shaft, pass to bevel gear wheel again, warp is given tap selector and diverter switch by connecting axle, reducing gear etc. with power distribution downwards with the vertical shaft that bevel gear wheel is connected.In whole drive system, do not establish the safeguard protection link.In the work,, cause stall, and another mechanism still orders about generation misoperation down, the generation that will cause the accident at power in case a certain mechanism breaks down.
Summary of the invention
The utility model is to have the existing above-mentioned shortcoming of on load tap changer power transmission route now in order to overcome, and a kind of new transmission mechanism that has safety guard that proposes.This mechanism structure is simple, and maintenance operation is convenient.
The technical scheme that the utility model is taked is:
The break-in transmission mechanism of combined loaded tap-changer, the power transmission shaft that it comprises a horizontal drive shaft, be located at bevel pinion on the horizontal drive shaft and gear box, be connected with the bevel gear wheel of bevel pinion engagement, with bevel gear wheel; Be characterized in that described safety protection mechanism comprises axle sleeve, a middle bearing bracket, an oil sealing; Described axle sleeve is arranged on the bevel gear wheel bottom, forms an integral body with bevel gear wheel, and the middle part of this axle sleeve is provided with groove; Described middle bearing bracket is located at the gear box bottom; Described oil sealing be located in the middle bearing bracket and power transmission shaft between the gap in.
The break-in transmission mechanism of combinations thereof formula on load tap changer wherein, also comprises a trim ring, and described trim ring is located at the joint portion of middle bearing bracket and gear box bottom.
The break-in transmission mechanism of combinations thereof formula on load tap changer, wherein, described lower gearbox portion inwall is provided with bearing pedestal.
The break-in transmission mechanism of combinations thereof formula on load tap changer, wherein, described bearing pedestal is located at the two ends of the outer groove of axle sleeve, is used for supporting sleeve.
The break-in transmission mechanism of combinations thereof formula on load tap changer, wherein, the top of described middle bearing bracket also is provided with the reserved location of a standby oil sealing.
Because the utility model has adopted above technical scheme, the bevel gear wheel bottom on load tap changer top break-in transmission mechanism has increased axle sleeve, has designed groove on this axle sleeve, has therefore formed a weak link.Stall takes place in a certain mechanism when the downstream of the circuit that uses this switch, and torsion is during greater than set point, and this weak link is twisted off, and power passes no longer down, thereby has avoided the generation of accident.
Description of drawings
Concrete structure of the present utility model is further provided by following embodiment and accompanying drawing thereof.
Fig. 1 is the structural representation of the break-in transmission mechanism of prior art combined loaded tap-changer.
Fig. 2 is the structural representation of the break-in transmission mechanism of the utility model combined loaded tap-changer.
Embodiment
See also Fig. 2.The break-in transmission mechanism of combined loaded tap-changer, be arranged in the break-in transmission mechanism on load tap changer top the power transmission shaft 25 that described break-in transmission mechanism comprises a horizontal drive shaft 21, be located at bevel pinion 22 on the horizontal drive shaft and gear box 23, be connected with the bevel gear wheel 24 of bevel pinion engagement, with bevel gear wheel; Also comprise a safety protection mechanism 26, described safety protection mechanism comprises axle sleeve 261, a middle bearing bracket 262, two oil sealings 263; Described axle sleeve is arranged on the bevel gear wheel bottom, and the middle part of this axle sleeve is provided with groove 2611; Described lower gearbox portion inwall is provided with bearing pedestal 264, and described bearing pedestal is located at the two ends of the outer groove of axle sleeve, is used for supporting sleeve.Described middle bearing bracket is located at the gear box bottom; Described oil sealing be located in the middle bearing bracket and power transmission shaft between the gap in.Also the axle sleeve of the bevel gear wheel of Bao Shu connects.Described trundle is passed to power transmission shaft with dynamic torque.
For ease of dismounting, the break-in transmission mechanism of the utility model combined loaded tap-changer also comprises a trim ring 266, and described trim ring is located at the joint portion of middle bearing bracket and gear box bottom.
Operating principle of the present utility model is: the horizontal drive shaft from motor power drives bevel pinion, bevel pinion drives the bevel gear wheel of vertically installing, the bevel gear wheel bottom is an axle sleeve structure, process groove (calling weak link in the following text) on the axle sleeve, axle sleeve is passed to power transmission shaft by trundle with dynamic torque, and downwards by connecting axle, reducing gear etc. with transmission of power and distribute to tap selector and diverter switch.
Middle bearing bracket is fixed on the upper end cover of shunting switch by six soket head cap screws, bevel gear mechanism links into an integrated entity by trim ring and six hexagon-headed bolts and middle bearing bracket, is connected with bevel gear wheel in the bevel gear mechanism by the trundle on the middle bearing bracket intermediate solid drive shaft axle head bulb.When stall takes place a certain mechanism in downstream, torsion is during greater than set point, and this weak link is twisted off, and power passes no longer down, has avoided the generation of accident.
Further describe advantage of the present utility model with an embodiment below.The normal driving torque of present embodiment on load tap changer is 250Nm, establishes breakdown torque and is its 3 times, be i.e. 750Nm.
This weak link cross section is an annular, and endoporus is 25mm, by following formula:
Tmax is for setting insurance moment of torsion 750Nm in the formula.Wn is cross section, a structural weak place Torsion Section modulus.Tb is the antitorque breakdown strength of material.This axle sleeve is selected ZG45 for use, and it is 314MP by the antitorque breakdown strength that converts.The larynx of trying to achieve weak link as calculated directly is φ 29.3mm.
The utility model can be designed to detachable open form, and bevel gear mechanism compresses the location by trim ring, as long as unclamp trim ring, horizontal drive shaft can rotate an angle arbitrarily, and the aligning of being convenient to horizontal drive shaft is installed.Easy to maintenance, only need dismantle the trim ring on the gear mechanism, the gear mechanism on integral replacing top can be finished service work.
By two skeleton oil sealing sealings, also reserve the position 3 of a skeleton oil sealing on middle bearing bracket top between middle bearing bracket and the power transmission shaft,, also can increase skeleton oil sealing, with the maintenance process of easy seepage just in case seepage takes place.
Claims (5)
1, the power transmission shaft that the break-in transmission mechanism of combined loaded tap-changer, described break-in transmission mechanism comprise a horizontal drive shaft, be located at bevel pinion on the horizontal drive shaft and gear box, be connected with the bevel gear wheel of bevel pinion engagement, with bevel gear wheel; It is characterized in that, also comprise a safety protection mechanism, described safety protection mechanism comprises axle sleeve, a middle bearing bracket, an oil sealing; Described axle sleeve is arranged on the bevel gear wheel bottom, forms an integral body with bevel gear wheel, and the middle part of this axle sleeve is provided with groove; Described middle bearing bracket is located at the gear box bottom; Described oil sealing be located in the middle bearing bracket and power transmission shaft between the gap in.
2, the break-in transmission mechanism of combined loaded tap-changer according to claim 1 is characterized in that, also comprises a trim ring, and described trim ring is located at the joint portion of middle bearing bracket and gear box bottom.
3, the break-in transmission mechanism of combined loaded tap-changer according to claim 1 is characterized in that, described lower gearbox portion inwall is provided with bearing pedestal.
4, the break-in transmission mechanism of combined loaded tap-changer according to claim 3 is characterized in that, described bearing pedestal is located at the two ends of the outer groove of axle sleeve, is used for supporting sleeve.
5, the break-in transmission mechanism of combined loaded tap-changer according to claim 1 is characterized in that, the top of described middle bearing bracket also is provided with the expectation position of a standby oil sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520046566 CN2870107Y (en) | 2005-11-16 | 2005-11-16 | Direction-changing drive mechanism of combined loaded bridging switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520046566 CN2870107Y (en) | 2005-11-16 | 2005-11-16 | Direction-changing drive mechanism of combined loaded bridging switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2870107Y true CN2870107Y (en) | 2007-02-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520046566 Expired - Fee Related CN2870107Y (en) | 2005-11-16 | 2005-11-16 | Direction-changing drive mechanism of combined loaded bridging switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2870107Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623208A (en) * | 2011-01-30 | 2012-08-01 | 上海华明电力设备制造有限公司 | Manual driving mechanism of off-circuit tap-changer |
| DE102013107553A1 (en) | 2013-07-16 | 2015-01-22 | Maschinenfabrik Reinhausen Gmbh | On-load tap-changer and method for emergency operation setting of a defined switching position of an on-load tap-changer |
| CN107685255A (en) * | 2017-09-01 | 2018-02-13 | 天津高科宇通人防设备制造有限公司 | The hole silk device and application method of one band four |
| WO2023084751A1 (en) * | 2021-11-12 | 2023-05-19 | 株式会社東芝 | On-load tap changer |
-
2005
- 2005-11-16 CN CN 200520046566 patent/CN2870107Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623208A (en) * | 2011-01-30 | 2012-08-01 | 上海华明电力设备制造有限公司 | Manual driving mechanism of off-circuit tap-changer |
| CN102623208B (en) * | 2011-01-30 | 2015-11-04 | 上海华明电力设备制造有限公司 | A kind of Manual drive mechanism of off circuit tap changer |
| DE102013107553A1 (en) | 2013-07-16 | 2015-01-22 | Maschinenfabrik Reinhausen Gmbh | On-load tap-changer and method for emergency operation setting of a defined switching position of an on-load tap-changer |
| WO2015007474A1 (en) | 2013-07-16 | 2015-01-22 | Maschinenfabrik Reinhausen Gmbh | On-load tap changer and a method for the emergency adjustment of a defined switching position of an on-load tap changer |
| CN105531781A (en) * | 2013-07-16 | 2016-04-27 | 赖茵豪森机械制造公司 | On-load tap changer and a method for the emergency adjustment of a defined switching position of an on-load tap changer |
| DE102013107553B4 (en) * | 2013-07-16 | 2016-05-19 | Maschinenfabrik Reinhausen Gmbh | On-load tap-changer, transmission in the on-load tap-changer and method of emergency operation of a defined switching position in the on-load tap-changer |
| US10074492B2 (en) | 2013-07-16 | 2018-09-11 | Maschinenfabrik Reinhausen Gmbh | On-load tap changer and method of emergency setting defined switching position thereof |
| CN105531781B (en) * | 2013-07-16 | 2019-01-15 | 赖茵豪森机械制造公司 | The method of load ratio bridging switch and the switching position of the restriction for adjusting load ratio bridging switch in a manner of promptly driving |
| CN107685255A (en) * | 2017-09-01 | 2018-02-13 | 天津高科宇通人防设备制造有限公司 | The hole silk device and application method of one band four |
| CN107685255B (en) * | 2017-09-01 | 2024-06-04 | 天津高科宇通人防设备制造有限公司 | Hole wire device with four holes and use method |
| WO2023084751A1 (en) * | 2021-11-12 | 2023-05-19 | 株式会社東芝 | On-load tap changer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HUAMING POWER EQUIPMENT MANUFACTURING CO., LTD., Free format text: FORMER OWNER: HUAMING POWER EQUIPMENT MANUFACTURING CO., LTD., SHANGHAI Effective date: 20080711 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080711 Address after: Shanghai City, the same way No. 977, zip code: 200333 Co-patentee after: Shanghai Huaming High-Voltage Switchgear Co., Ltd. Patentee after: Shanghai Huaming Power Equipment Manufacturing Co., Ltd. Co-patentee after: Shanghai Huaming High-Voltage Electrical R&D Co., Ltd. Address before: Shanghai City, the same way No. 977, zip code: 200333 Patentee before: Huaming Power Equipment Manufacturing Co., Ltd., Shanghai |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070214 Termination date: 20141116 |
|
| EXPY | Termination of patent right or utility model |