CN205036757U - Transmission decelerator with overload protection - Google Patents

Transmission decelerator with overload protection Download PDF

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Publication number
CN205036757U
CN205036757U CN201520811474.4U CN201520811474U CN205036757U CN 205036757 U CN205036757 U CN 205036757U CN 201520811474 U CN201520811474 U CN 201520811474U CN 205036757 U CN205036757 U CN 205036757U
Authority
CN
China
Prior art keywords
output shaft
worm gear
friction
overload protection
worm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201520811474.4U
Other languages
Chinese (zh)
Inventor
赵亚光
刘丽
杨粉霞
周维颖
于宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shaanxi Baocheng Aviation Instrument Co Ltd
Original Assignee
Shaanxi Baocheng Aviation Instrument Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shaanxi Baocheng Aviation Instrument Co Ltd filed Critical Shaanxi Baocheng Aviation Instrument Co Ltd
Priority to CN201520811474.4U priority Critical patent/CN205036757U/en
Application granted granted Critical
Publication of CN205036757U publication Critical patent/CN205036757U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a transmission decelerator with overload protection, the aviation plug is provided with a housing, be equipped with the bearing cap on the casing, the inside support through the bearing of casing has the output shaft, be equipped with the worm in the casing, be equipped with the worm wheel with worm mesh on the output shaft, worm wheel formula structure as an organic whole, worm wheel one side is carried on spacingly through locating the epaxial bush of output, be equipped with the friction piece on the worm wheel opposite side output shaft in proper order, spring and nut, the nut is through close compression spring with output shaft thread soon, the friction piece passes through the pressure and worm wheel rubbing contact of spring. The utility model discloses simple structure, small, overload protection moment precision is high, and the reliable operation is stable.

Description

There is the transmission decelerating device of overload protection
Technical field
The utility model belongs to speed reducer technical field, is specifically related to a kind of transmission decelerating device with overload protection.
Background technique
At present, small-sized even micromachine device power transmission is combined by various axle, gear, belt wheel, retarder etc. to realize, but said structure is not suitable for machinery terminal has overload torque protection to require the transmission of function.Application number is the worm-gear speed reducer that patent discloses band overload protection of 201120360476.8, worm gear is modified into worm gear inner ring and worm gear outer ring, worm gear inner ring is pressed in worm gear outer ring by spring, the frictional force between worm gear inner ring and worm gear outer ring is utilized to realize gearing down, and utilize the friction slip between worm gear inner ring and worm gear outer ring to realize disconnecting transmission, play the function of overload protection, but the split-type structural that the worm gear in it is made up of worm gear outer ring and the worm gear inner ring that is divided into upper inner ring and lower inner ring, complex structure, cause structure cumulative error too large, simultaneously, disclosed in it, overload protection moment is only qualitatively, anufacturability and functional reliability poor.Therefore be necessary to propose to improve.
Model utility content
The technical problem that the utility model solves: a kind of transmission decelerating device with overload protection is provided; this device adopts the rubbing contact between integral type worm gear and friction member to realize the overload protection function of transmission, and structure is simple, and volume is little; overload protection torque accuracy is high, reliable and stable work.
The technical solution adopted in the utility model: the transmission decelerating device with overload protection, there is housing, described housing is provided with bearing cap, described enclosure interior has output shaft by bearings, worm screw is provided with in described housing, described output shaft is provided with the worm gear with worm meshing, described worm gear is integral type structure, described worm gear side is undertaken spacing by the lining be located on output shaft, described worm gear opposite side output shaft is provided with friction member successively, spring and nut, described nut by with output shaft threaded engagement Compress Spring, described friction member passes through pressure and the worm gear rubbing contact of spring.
Wherein, described worm gear coordinates with output shaft clearance, and described friction member and output shaft clearance are joined merga pass pin II and be fixedly connected with output shaft.
Further, described worm gear is provided with inner conical surface, and described friction member is provided with male cone (strobilus masculinus), and described worm gear drives friction member to drive output shaft rotation by inner conical surface and male cone (strobilus masculinus) tapering rubbing contact.
The utility model advantage compared with prior art:
1, the utility model adopts the worm gear of integral structure, is realized the overload protection function of transmission decelerating device by the rubbing contact between worm gear and friction member, and structure is simple, and reduce structure cumulative error, volume is little;
2, the frictional force size between the friction member male cone (strobilus masculinus) of spring-compressed formation and worm gear inner conical surface is adjusted by nut; thus the overload protection moment changed between worm gear and output shaft; make overload protection moment quantitatively between 0 ~ 6mNm; its error is only 5%; overload protection torque accuracy is high, reliable and stable work.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing 1, embodiment of the present utility model is described.
There is the transmission decelerating device of overload protection; as shown in Figure 1; have housing 1, described housing 1 is provided with bearing cap 2, and described housing 1 inside is supported with output shaft 3 by bearing 5; worm screw 8 is provided with in described housing 1; described output shaft 3 is provided with the worm gear 7 engaged with worm screw 8, and described worm gear 7 is integral type structure, and its structure is simple; reduce structural failure accumulation, volume is little.Described worm gear 7 side is undertaken spacing by the lining 6 be located on output shaft 3, described lining 6 is fixed on output shaft 3 by pin I 4, described worm gear 7 by Spielpassung be socketed on output shaft 3 and its one end and lining 6 one end face near, described worm gear 7 opposite side output shaft 3 is provided with friction member 9 successively, spring 10 and nut 12, described friction member 9 and output shaft 3 Spielpassung, described friction member 9 is fixedly connected with by pin II 11 with output shaft 3, described nut 12 by with output shaft 3 threaded engagement Compress Spring 10, described friction member 9 passes through pressure and worm gear 7 rubbing contact of spring 10, concrete, described worm gear 7 is provided with inner conical surface 701, described friction member 9 is provided with male cone (strobilus masculinus) 901, described worm gear 7 is driven friction member 9 by inner conical surface 701 and male cone (strobilus masculinus) 901 tapering rubbing contact and is driven output shaft 3 to rotate.
The utility model changes spring 10 act on pressure on friction member 9 by rotating the right position of adjusting nut 12; thus achieve the frictional force increasing or reduce between worm gear 7 inner conical surface 701 and friction member 9 male cone (strobilus masculinus) 901; above-mentioned frictional force forms certain friction torque and the overload protection moment between worm gear 7 and output shaft 3 on worm gear 7; this overload protection moment is measured quantitatively between 0 ~ 6mNm by torquer; its error is only 5%; overload protection torque accuracy is high, makes reliable and stable work.
During work, when the output terminal moment of output shaft 3 is less than setting moment values, worm screw 8 drives worm gear 7 to rotate, worm gear 7 is by driving friction member 9 to rotate with friction member 9 rubbing contact, because friction member 9 limits rotary motion pair with output shaft 3 under pin II 11 acts on, thus driving output shaft 3 and worm gear 7 synchronous axial system, output shaft 3 works; When the output terminal moment of output shaft 3 is greater than setting moment values; frictional force between worm gear 7 and friction member 9 is not enough to overcome output shaft 3 output terminal relative moment; worm screw 8 drives worm gear 7 to rotate; skidding is there is between worm gear 7 and friction member 9; due to worm gear 7 and output shaft 3 Spielpassung; worm gear 7 can only relatively rotate on output shaft 3, and friction member 9 is relative with output shaft 3 and worm gear 7 transfixion, thus realizes overload protective function.
Above-described embodiment, just preferred embodiment of the present utility model, is not used for limiting the utility model practical range, therefore all equivalence changes done with content described in the utility model claim, all should be included within the utility model right.

Claims (3)

1. there is the transmission decelerating device of overload protection, there is housing (1), described housing (1) is provided with bearing cap (2), described housing (1) inside is supported with output shaft (3) by bearing (5), worm screw (8) is provided with in described housing (1), it is characterized in that: described output shaft (3) is provided with the worm gear (7) engaged with worm screw (8), described worm gear (7) is integral type structure, described worm gear (7) side is undertaken spacing by the lining (6) be located on output shaft (3), the output shaft (3) of described worm gear (7) opposite side is provided with friction member (9) successively, spring (10) and nut (12), described nut (12) by with output shaft (3) threaded engagement Compress Spring (10), described friction member (9) is by the pressure of spring (10) and worm gear (7) rubbing contact.
2. the transmission decelerating device with overload protection according to claim 1; it is characterized in that: described worm gear (7) and output shaft (3) Spielpassung, described friction member (9) is also fixedly connected with output shaft (3) by pin II (11) with output shaft (3) Spielpassung.
3. the transmission decelerating device with overload protection according to claim 1 and 2; it is characterized in that: described worm gear (7) is provided with inner conical surface (701); described friction member (9) is provided with male cone (strobilus masculinus) (901), and described worm gear (7) drives friction member (9) to drive output shaft (3) to rotate by inner conical surface (701) and male cone (strobilus masculinus) (901) tapering rubbing contact.
CN201520811474.4U 2015-10-19 2015-10-19 Transmission decelerator with overload protection Expired - Fee Related CN205036757U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520811474.4U CN205036757U (en) 2015-10-19 2015-10-19 Transmission decelerator with overload protection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520811474.4U CN205036757U (en) 2015-10-19 2015-10-19 Transmission decelerator with overload protection

Publications (1)

Publication Number Publication Date
CN205036757U true CN205036757U (en) 2016-02-17

Family

ID=55295662

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520811474.4U Expired - Fee Related CN205036757U (en) 2015-10-19 2015-10-19 Transmission decelerator with overload protection

Country Status (1)

Country Link
CN (1) CN205036757U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105715757A (en) * 2016-04-12 2016-06-29 无锡凯能光伏设备有限公司 Adjustable rotary drive device with safety clutch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105715757A (en) * 2016-04-12 2016-06-29 无锡凯能光伏设备有限公司 Adjustable rotary drive device with safety clutch

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160217

Termination date: 20171019

CF01 Termination of patent right due to non-payment of annual fee