CN205298325U - Friction clutch device of worm gear speed reducer machine - Google Patents
Friction clutch device of worm gear speed reducer machine Download PDFInfo
- Publication number
- CN205298325U CN205298325U CN201620051698.4U CN201620051698U CN205298325U CN 205298325 U CN205298325 U CN 205298325U CN 201620051698 U CN201620051698 U CN 201620051698U CN 205298325 U CN205298325 U CN 205298325U
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- Prior art keywords
- breach
- worm gear
- friction plate
- gear
- output shaft
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Abstract
The utility model discloses a friction clutch device of worm gear speed reducer machine, including lock nut, disc spring, friction disc, pressing blade, output shaft and worm wheel, near having inside sunken breach on lock nut's the side end face, be provided with in the breach on the worm wheel friction disc and pressing blade, the pressing blade in the outside compresses tightly the friction disc and make the side of friction disc and the side end face contaction of worm wheel, in the breach, the outer lane of friction disc is connected with the meshing of worm wheel inner circle, and pressing blade's inner circle and output shaft meshing are connected, the output shaft lies in the center of worm wheel, and disc spring locates one side of worm wheel, and disc spring's outer edge is supported on pressing blade's side end face, and disc spring establishes through the cover and produces packing force in advance at the epaxial lock nut of output for pressing blade supports the friction disc on the worm wheel side end face. The utility model discloses an advantage: in the time of can guaranteeing effectively that the speed reducer is realized setting for moment of torsion at instantaneous overload or above it, the spare part and the impaired demand of motor of automatic protection reduction gear.
Description
Technical field
This utility model relates to reductor technical field, is specifically related to the friction engaging and disengaging gear of a kind of worm-gear speed reducer.
Background technology
Existing decelerator has cylinder gear speed reducer, worm type of reduction gearing, planetary reduction gear and three-ring speed reducer etc. These decelerators are typically all with motor for power, by the transmission output torque of decelerator, its output moment of torsion is fixed value during design, when decelerator instantaneous overload, the load born can increase at double, so will certainly cause the damage of reducer gear and motor. Therefore common reductor can not meet this working condition requirement.
Utility model content
The purpose of this utility model is to make up the deficiencies in the prior art; provide the friction engaging and disengaging gear of a kind of worm-gear speed reducer; when reductor instantaneous overload; friction engaging and disengaging gear can disengage automatically; the operating of the gear ring of the output shaft of decelerator and its connection is separated, to reach the function of protection decelerator and motor.
In order to reach the purpose of this utility model, technical scheme is as follows:
A kind of friction engaging and disengaging gear of worm-gear speed reducer, it is characterized in that, including locking nut, butterfly spring, friction plate, compression sheet, output shaft and worm gear, worm gear has, on the side end face of locking nut, the breach caved inward, the diameter of breach is less than the diameter of worm gear, and the axial width of breach, less than the axial width of worm gear, is provided with described friction plate in breach and compresses sheet, friction plate is placed in the inner side in breach, compresses sheet and is placed in the outer fix in breach; Friction plate is compressed and makes the side of friction plate to contact with the side end face of worm gear by the sheet that compresses in outside; In breach, the outer ring of friction plate is connected with the engagement of worm gear inner ring, and the inner ring compressing sheet is connected with output shaft engagement; Output shaft is positioned at the center of worm gear, butterfly spring is located at the side of worm gear, locking nut is set in outside output shaft, the outer of butterfly spring is against on the side end face compressing sheet, butterfly spring produces pre-pressing force by the locking nut being set on output shaft, and described pre-pressing force makes to compress sheet and is against on worm gear side end face by friction plate.
Preferably, being provided with polylith friction plate and polylith compresses sheet in described breach, from the inner side in breach towards lateral direction, one piece of friction plate and one piece of compression sheet interval are arranged.
This utility model has the advantages that
Output shaft at decelerator arranges the friction engaging and disengaging gear of a set of easy for installation, simple possible, and the friction plate of friction engaging and disengaging gear relies on the pre-pressing force of locking nut and butterfly spring to produce friction, and then transmission moment of torsion. When reductor instantaneous overload or exceed its set moment of torsion time; the normal pressure that friction plate produces is more than the pre-pressing force of locking nut and butterfly spring; cause that butterfly spring is expanded; friction plate can disengage automatically; the operating of the output shaft of decelerator with the gear ring of its connection is separated, thus protecting decelerator and motor.
Gear ratio is big, and driving torque is big, and simple in construction, safe and reliable, manufacturing cost is relatively low. Can effectively ensure that when reductor realizes in instantaneous overload or exceedes its setting moment of torsion, automatically protect the parts of decelerator and the demand that motor is impaired.
Accompanying drawing explanation
The master that Fig. 1 is worm-gear speed reducer looks sectional structure schematic diagram;
Fig. 2 is the vertical view sectional structure schematic diagram of worm-gear speed reducer;
Fig. 3 is the structural representation of the friction engaging and disengaging gear of this utility model worm-gear speed reducer;
Fig. 4 is the structural representation of friction plate in Fig. 3;
Fig. 5 is the structural representation compressing sheet in Fig. 3;
Fig. 6 is the structural representation of worm gear in Fig. 3;
Fig. 7 is the cross section structure schematic diagram of Fig. 4.
Detailed description of the invention
Below in conjunction with embodiment, this utility model is further described, but protection domain of the present utility model is not limited solely to embodiment.
As depicted in figs. 1 and 2, worm-gear speed reducer has casing 2, the side of casing 2 is provided with motor 1, cylindrical gear pair 3 and worm screw 4 it is provided with in casing 2, cylindrical gear pair 3 couples with motor 1, one end of worm screw 4 couples with cylindrical gear pair 3, and the other end is connected on casing 2 by worm bearing 5, and motor 1 drives worm screw 4 to rotate by cylindrical gear pair 3.
Shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6 Fig. 7, the friction engaging and disengaging gear of a kind of worm-gear speed reducer, including locking nut 7, butterfly spring 8, friction plate 9, compress sheet 10, output shaft 11 and worm gear 12, friction engaging and disengaging gear is arranged in casing 2. Worm gear 12 has, on the side end face (left end face of Fig. 3) of locking nut 7, the breach 13 caved inward, the diameter of breach 13 is less than the diameter of worm gear 12, the axial width of breach 13 is less than the axial width of worm gear 12, and breach 13 is also a cylindrical structural. Being provided with described friction plate 9 in breach 13 and compress sheet 10, friction plate 9 is placed in inner side in breach 13 (in Fig. 3 on the right side position), compresses sheet 10 and is placed in the outer fix (keep left in Fig. 3 side position) in breach 13. Friction plate 9 is compressed and makes the side of friction plate 9 to contact with the side end face of worm gear 12 by the sheet 10 that compresses in outside.
In breach, the outer ring of friction plate 9 is connected with the engagement of worm gear 12 inner ring, and the inner ring compressing sheet 10 is connected with output shaft 11 engagement. Worm gear 12 outer ring is connected with worm screw 4 engagement. Output shaft 11 is positioned at the center of worm gear 12, and output shaft 11 is through whole worm gear 12, and output shaft 11 is connected on casing 2 by two output shaft bearings 6, and two output shaft bearings 6 lay respectively at the both sides of friction engaging and disengaging gear. Butterfly spring 8 is located at the side (left side of Fig. 3) of worm gear 12, locking nut 7 is set in outside output shaft 11, butterfly spring 8 is between locking nut 7 also worm gear 12, butterfly spring 8 produces pre-pressing force by the locking nut 7 being set on output shaft 11, the outer of butterfly spring 8 is against in the left end face compressing sheet 10, butterfly spring 8 produces pre-pressing force by the locking nut 7 being set on output shaft 11, and described pre-pressing force makes to compress sheet 10 and is against on worm gear 12 side end face by friction plate 9, makes friction plate 9 and worm gear 12 be in close contact.
It is provided with polylith friction plate 9 in breach 13 and polylith compresses sheet 10, arrange from the inner side in breach 13 towards lateral direction (from right toward left direction Fig. 3), one piece of friction plate 9 and one piece of compression sheet 10 interval. In the present embodiment, it is provided with two pieces of friction plates 9 in breach altogether, is provided with one piece between two pieces of friction plates 9 and compresses sheet 10, the side of the friction plate 9 of inner side and worm gear 12 end contact, outboard friction sheet 9 compacted 10 is pushed down, and butterfly spring 8 outer is against on outer side compression sheet 10. And, in the opposite side of worm gear 12, namely contrary with breach side (right side of Fig. 3), it is also equipped with one piece of compression sheet 10 and one piece of friction plate 9 friction plate 9 is located between compression sheet 10 and worm gear 12, the contacts side surfaces of described friction plate 9 only side and worm gear 12.
The work process of the friction engaging and disengaging gear of this worm-gear speed reducer: when power source inputs from motor 1, by cylindrical gear pair 3, worm screw 4 transmission, impart power to worm gear 12, the endoporus of worm gear 12 is connected by rectangle internal spline and two pieces of both surface friction sheets 9, the plane of friction plate 9 and two pieces of inner faces compressing sheets 10 and worm gear 12 fully in contact with, compress sheet 10 to be connected with output shaft 11 by rectangle internal spline, butterfly spring 8 compresses the compression sheet 10 of the outer end that keeps left by locking nut 7, it is predetermined value by the thrust of butterfly spring 8, can ensure that the moment of torsion of worm gear 12 is passed to output shaft 11 by the contact surface compressing sheet 10 and friction plate 9, to realize the purpose of reductor moment of torsion output. the thrust of butterfly spring 8 by locking nut 7 when mounted, utilizes special torque spanner that the moment of torsion of installing of locking nut 7 is adjusted max. output torque value when reductor designs, to ensure that friction engaging and disengaging gear effectively transmits moment of torsion.
When reductor instantaneous overload or reductor output moment of torsion exceed its max. output torque value; friction plate 9 and the normal pressure pre-pressing force more than locking nut 7 and butterfly spring 8 compressing sheet 10 generation; cause that butterfly spring 8 is expanded; friction plate 9 and compression sheet 10 can disengage automatically; the output shaft 11 of decelerator is separated with the operating of the gear ring of its connection, thus protecting decelerator and motor.
The friction engaging and disengaging gear of worm-gear speed reducer realizes adhesive and the separation of friction engaging and disengaging gear by above work process, thus transmitting moment of torsion and the function of protection automatically. This reductor is reasonable in design, compact conformation, can be widely applied in multiclass machine driving.
Last it is noted that above example only in order to this utility model is described and and technical scheme described by unrestricted this utility model, therefore, although this utility model is had been carried out describing in detail by this specification with reference to each above-mentioned embodiment, but, it will be understood by those within the art that, still this utility model can be modified or equivalent replacement, and all are without departing from the technical scheme of spirit and scope of the present utility model and improvement thereof, it all should be encompassed in right of the present utility model.
Claims (2)
1. the friction engaging and disengaging gear of a worm-gear speed reducer, it is characterized in that, including locking nut (7), butterfly spring (8), friction plate (9), compress sheet (10), output shaft (11) and worm gear (12), worm gear has, on the side end face of locking nut, the breach (13) caved inward, the diameter of breach is less than the diameter of worm gear, the axial width of breach is less than the axial width of worm gear, in breach, it is provided with described friction plate and compresses sheet, friction plate is placed in the inner side in breach, compress sheet and be placed in the outer fix in breach, friction plate is compressed and makes the side of friction plate to contact with the side end face of worm gear by the sheet that compresses in outside, in breach, the outer ring of friction plate is connected with the engagement of worm gear inner ring, and the inner ring compressing sheet is connected with output shaft engagement, output shaft is positioned at the center of worm gear, butterfly spring is located at the side of worm gear, locking nut is set in outside output shaft, the outer of butterfly spring is against on the side end face compressing sheet, butterfly spring produces pre-pressing force by the locking nut (7) being set on output shaft, and described pre-pressing force makes to compress sheet and is against on worm gear side end face by friction plate.
2. the friction engaging and disengaging gear of worm-gear speed reducer according to claim 1, it is characterised in that be provided with polylith friction plate in described breach and polylith compresses sheet, from the inner side in breach towards lateral direction, one piece of friction plate and one piece of compression sheet interval are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620051698.4U CN205298325U (en) | 2016-01-19 | 2016-01-19 | Friction clutch device of worm gear speed reducer machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620051698.4U CN205298325U (en) | 2016-01-19 | 2016-01-19 | Friction clutch device of worm gear speed reducer machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205298325U true CN205298325U (en) | 2016-06-08 |
Family
ID=56429759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620051698.4U Expired - Fee Related CN205298325U (en) | 2016-01-19 | 2016-01-19 | Friction clutch device of worm gear speed reducer machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205298325U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775349A (en) * | 2018-06-29 | 2018-11-09 | 南京高速齿轮制造有限公司 | Yaw the clutch protecting mechanism of variable propeller gearbox input terminal |
-
2016
- 2016-01-19 CN CN201620051698.4U patent/CN205298325U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775349A (en) * | 2018-06-29 | 2018-11-09 | 南京高速齿轮制造有限公司 | Yaw the clutch protecting mechanism of variable propeller gearbox input terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20170119 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |