CN206206504U - A kind of worm type of reduction gearing for releasing self-locking - Google Patents

Abstract

The utility model discloses a kind of worm type of reduction gearing for releasing self-locking, it is characterised in that the decelerator includes spanner, pre-load nut, the first spring, draw-in groove, worm-wheel shaft, guide pad, driving lever, clutch shaft bearing, worm gear, second bearing, second spring, clutch, worm screw, case lid, bearing group and casing.When by spanner rotating lever, clutch can be disengaged from worm gear, so that worm gear realizes idle running on worm-wheel shaft, i.e., now just relieve the self-locking of worm type of reduction gearing.The decelerator releases worm and gear latching characteristics, so as to further expand the use scope of worm type of reduction gearing on the premise of traditional decelerator overall volume is reduced；Simultaneously remain its speed reducing ratio than it is larger the characteristics of.

Description

A kind of worm type of reduction gearing for releasing self-locking

Technical field

The utility model belongs to mechanical field, specifically a kind of worm type of reduction gearing for releasing self-locking.

Background technology

Decelerator is essential device in plant equipment, worm type of reduction gearing with its speed reducing ratio it is big the characteristics of obtain Extensive use.Worm type of reduction gearing has a larger speed reducing ratio, input shaft and output shaft not on the same axis, also not same The characteristics of in one plane, self-locking is the maximum feature of worm and gear, but self-locking sometimes also limits worm gear snail to a certain extent The utilization rate of bar, its transmission efficiency is not high in addition, and precision is not high, and is unfavorable for the characteristics of itself self-locking of Worm Wheel System The action and debugging of system, especially in the event of a power failure.Current decelerator is in order to overcome more than this characteristic using Jia one again The method that level is slowed down, i.e., using the method for shifting slide gear, but this method increases the volume of decelerator, while also weakening snail The characteristics of worm and gear speed reducing ratio is big.Therefore designing a new worm type of reduction gearing will be significant.

Utility model content

In view of the shortcomings of the prior art, the utility model is intended to solve technical problem is to provide and a kind of releases self-locking Worm type of reduction gearing.The decelerator releases worm and gear latching characteristics on the premise of traditional decelerator overall volume is reduced, So as to further expand the use scope of worm type of reduction gearing；Simultaneously remain its speed reducing ratio than it is larger the characteristics of.

The technical scheme of the utility model solution technical problem is to provide a kind of worm and gear for releasing self-locking and subtracts Fast device, it is characterised in that the decelerator include spanner, pre-load nut, the first spring, draw-in groove, worm-wheel shaft, guide pad, driving lever, Clutch shaft bearing, worm gear, second bearing, second spring, clutch, worm screw, case lid, bearing group and casing；The upper end of the casing Case lid is installed；The worm screw two ends are separately installed with bearing, and bearing outer ring is fixed in the through hole of wall box；The driving lever On be sequentially installed with spanner, pre-load nut, the first spring, draw-in groove and guide pad；The spanner is connected with the upper end of driving lever；It is described Pre-load nut is connected with driving lever；First spring one end is connected with pre-load nut, and the other end is connected with draw-in groove；The draw-in groove is consolidated Through hole of the Dingan County loaded on case lid；The guide pad is connected with case lid lower surface；First axle is sequentially installed with the worm-wheel shaft Hold, worm gear, clutch, second spring and second bearing；One end of worm-wheel shaft is connected by clutch shaft bearing with casing, and the other end is made For output end stretches out casing, worm-wheel shaft is connected by second bearing near output end position with casing；Described second spring one end It is connected with second bearing, the other end is connected with one end of clutch；The other end and worm gear of the clutch；The worm gear It is fixedly connected with the outer ring of bearing group, the inner ring of bearing group is fixedly connected with worm-wheel shaft；The worm gear and worm engaging；Described group The lower end of bar and clutch engagement.

Compared with prior art, the utility model beneficial effect is：When by spanner rotating lever, clutch can be with Worm gear is disengaged from, so that worm gear realizes idle running on worm-wheel shaft, i.e., now just relieves the self-locking of worm type of reduction gearing. The decelerator releases worm and gear latching characteristics, so as to further expand on the premise of traditional decelerator overall volume is reduced The use scope of worm type of reduction gearing；Simultaneously remain its speed reducing ratio than it is larger the characteristics of.

Brief description of the drawings

Fig. 1 is a kind of overall structure diagram of embodiment of worm type of reduction gearing that the utility model can release self-locking；

Fig. 2 is a kind of body structure schematic diagram of embodiment of worm type of reduction gearing that the utility model can release self-locking；

Fig. 3 is a kind of partial structural diagram of embodiment of worm type of reduction gearing that utility model can release self-locking；

Fig. 4 is that a kind of structure of bearings of embodiment of worm type of reduction gearing that the utility model can release self-locking is illustrated Figure；(in figure：1st, spanner；2nd, pre-load nut；3rd, the first spring；4th, draw-in groove；5th, worm-wheel shaft；6th, guide pad；7th, driving lever；8th, first Bearing；9th, worm gear；10th, second bearing；11st, second spring；12nd, clutch；13rd, worm screw；14th, case lid；15th, bearing group；16th, case Body)

Specific embodiment

Specific embodiment of the utility model is given below.Specific embodiment is only used for further describing this practicality newly Type, the application scope of the claims is not limited.

The utility model provides a kind of worm type of reduction gearing (referring to Fig. 1-4, abbreviation decelerator) for releasing self-locking, It is characterized in that the decelerator includes spanner 1, pre-load nut 2, the first spring 3, draw-in groove 4, worm-wheel shaft 5, guide pad 6, driving lever 7th, clutch shaft bearing 8, worm gear 9, second bearing 10, second spring 11, clutch 12, worm screw 13, case lid 14, bearing group 15 and casing 16；The upper end of the casing 16 is provided with case lid 14；The two ends of the worm screw 13 are separately installed with bearing, and bearing outer ring is fixed on case In the through hole of the side wall of body 16, and by end cap seal；The driving lever 7 is sequentially installed with spanner 1, pre-load nut 2, from top to bottom One spring 3, draw-in groove 4 and guide pad 6；The spanner 1 is connected with the upper end of driving lever 7, the self-locking for releasing worm and gear；It is described Pre-load nut 2 is connected by screw thread with driving lever 7, for the first spring of pretension 3；First spring 3 is located at pre-load nut 2 and card Between groove 4, one end is connected with pre-load nut 2, and the other end is connected with draw-in groove 4；The draw-in groove 4 is fixedly installed in the through hole of case lid 14 Place；The guide pad 6 is located at the bottom of draw-in groove 4, is connected with the lower surface of case lid 14 by bolt, plays to the Auxiliary support of driving lever 7 Effect, to 7 position-limiting actions of driving lever and the deflection of driving lever 7 is reduced during work；If it is intended to the self-locking performance of decelerator is released, only After driving lever 7 need to be pressed down on by spanner 1, rotary spanner 1 then makes clutch 12 be disengaged from worm gear 9, reaches releasing self-locking Purpose；The worm-wheel shaft 5 is sequentially installed with clutch shaft bearing 8, worm gear 9, clutch 12, second spring 11 and second from left to right Bearing 10；One end of worm-wheel shaft 5 is connected with casing 16 by clutch shaft bearing 8 and by end cap seal, the other end is used as output end Casing 16 is stretched out, worm-wheel shaft 5 is connected and by end cap seal by second bearing 10 near output end position with casing 16；It is described The one end of second spring 11 is connected with second bearing 10, and the other end is connected with one end of clutch 12, positioned at second bearing 10 and from Between clutch 12, engaged for promoting clutch 12 and worm gear 9 to realize resetting；The other end of the clutch 12 is matched somebody with somebody with worm gear 9 Close；The worm gear 9 is fixedly connected by flange with the outer ring of bearing group 15, and the inner ring of bearing group 15 is by flange and worm-wheel shaft 5 It is fixedly connected, it is ensured that worm gear 9 does not produce lateral displacement relative to worm-wheel shaft 5；The worm gear 9 is engaged with worm screw 13；The driving lever 7 Lower end be located at clutch 12 top, contact or separate with clutch 12.

The operation principle and workflow that the utility model can release the worm type of reduction gearing of self-locking be：Do not releasing snail On the premise of worm and gear self-locking performance, during the decelerator normal work, worm screw 13 drive worm gear 9 rotate, and now worm gear 9 and from Clutch 12 is meshed, so that worm gear 9 drives worm-wheel shaft 5 to rotate, realizes the function of deceleration transmission；Needed in some special occasions When releasing the self-locking performance of worm and gear, the decelerator is pressed down on by spanner 1 and rotates driving lever 7, and now driving lever 7 can be stuck in In draw-in groove 4, at the same time the lower end of driving lever 7 can be disengaged from clutch 12 and worm gear 9 and clutch 12 can make second spring 11 shorten extruding casing 16, and now worm gear 9 just realizes idle running on worm-wheel shaft 5；When driving lever 7 is resetted again by spanner 1, Clutch 12 can be engaged with worm gear 9 again under the effect of the elastic force of second spring 11, finally realize the function of normal deceleration transmission.

The utility model does not address part and is applied to prior art.

Claims (1)

1. a kind of worm type of reduction gearing for releasing self-locking, it is characterised in that the decelerator includes spanner, pre-load nut, the One spring, draw-in groove, worm-wheel shaft, guide pad, driving lever, clutch shaft bearing, worm gear, second bearing, second spring, clutch, worm screw, case Lid, bearing group and casing；The upper end of the casing is provided with case lid；The worm screw two ends are separately installed with bearing, bearing outer ring It is fixed in the through hole of wall box；Spanner, pre-load nut, the first spring, draw-in groove and guiding are sequentially installed with the driving lever Block；The spanner is connected with the upper end of driving lever；The pre-load nut is connected with driving lever；First spring one end and pre-load nut Connection, the other end is connected with draw-in groove；The draw-in groove is fixedly installed in the through hole of case lid；The guide pad connects with case lid lower surface Connect；Clutch shaft bearing, worm gear, clutch, second spring and second bearing are sequentially installed with the worm-wheel shaft；One end of worm-wheel shaft It is connected with casing by clutch shaft bearing, the other end stretches out casing as output end, worm-wheel shaft passes through second near output end position Bearing is connected with casing；Described second spring one end is connected with second bearing, and the other end is connected with one end of clutch；It is described from The other end and worm gear of clutch；The worm gear is fixedly connected with the outer ring of bearing group, and inner ring and the worm-wheel shaft of bearing group are consolidated Fixed connection；The worm gear and worm engaging；The lower end of the driving lever and clutch engagement.