CN206830736U

CN206830736U - A kind of reductor

Info

Publication number: CN206830736U
Application number: CN201720733833.8U
Authority: CN
Inventors: 胡勇
Original assignee: Mianyang Vaillant Automation Technology Co Ltd
Current assignee: Mianyang Vaillant Automation Technology Co Ltd
Priority date: 2017-06-22
Filing date: 2017-06-22
Publication date: 2018-01-02
Anticipated expiration: 2027-06-22

Abstract

Reductor described in the utility model, the first Cycloidal Wheel and the second Cycloidal Wheel including shell and in shell, two coaxial external toothings are provided with the shell, the teeth of mutual cooperation are provided with the outside of external toothing inner side and Cycloidal Wheel, the external diameter of the Cycloidal Wheel is less than external toothing internal diameter；The Cycloidal Wheel center is provided with needle bearing；The engagement place and external toothing axle center three point on a straight line of first Cycloidal Wheel and the second Cycloidal Wheel and external toothing, and engagement place is located at axle center both sides respectively.The utility model has following superiority：Needle bearing is used between eccentric wheel and Cycloidal Wheel, reduces space-consuming, leaves accommodation space to cyclo drive axle and its bushing, and bigger cyclo drive shaft diameter can be used；Pass through a pair of Cycloidal Wheel common drivings so that eccentric force suffered by bearing is cancelled out each other, and is reduced bearing shake and abrasion, is improved the reductor life-span；Shell and external toothing are design for disassembly, are convenient for changing and reduce difficulty of processing.

Description

A kind of reductor

Technical field

The utility model belongs to mechanical field, and in particular to a kind of reductor.

Background technology

Reductor is a kind of power transmission mechanism, and using the velocity transducer of gear, the winding number of power source is dropped into institute It is required that winding number, and obtain larger moment of torsion, bearing in reduction gears plays the work of the gear shaft or connecting rod between support rotating wherein With.Reducer gear bearing rotate when, using radius not wait eccentric shaft and internal gear be mutually driven, cause output slow down and Torque increases, and eccentric wheel has reverse eccentric force in transmission for input shaft bearing so that bearing is easily dislocated or stress surface adds Speed abrasion, easily causes bear vibration and service life shortens.

Utility model content

To overcome existing reductor eccentric force to cause, bearing is dislocated and the technological deficiency of abrasion aggravation, the utility model disclose A kind of reductor.

Reductor described in the utility model, including shell and the first Cycloidal Wheel and the second Cycloidal Wheel in shell, institute State and two coaxial external toothings are provided with shell, the teeth of mutual cooperation, institute are provided with the inside of external toothing and on the outside of Cycloidal Wheel The external diameter for stating Cycloidal Wheel is less than external toothing internal diameter；The Cycloidal Wheel center is provided with needle bearing；First Cycloidal Wheel and the second pendulum The engagement place and external toothing axle center three point on a straight line of line wheel and external toothing, and engagement place is located at axle center both sides respectively.

Preferably, multiple symmetrical cyclo drive axles are provided with the Cycloidal Wheel.

Further, the quantity of the cyclo drive axle is eight.

Further, it is provided with cyclo drive neck bush on the outside of the cyclo drive axle.

Preferably, it is engaged on the outside of the external toothing by a pair of same positioning keys diametrically with shell.

Preferably, it is provided with clamp ring on the eccentric shaft on the shell.

Preferably, it is provided with Cycloidal Wheel spacer ring between first Cycloidal Wheel and the second Cycloidal Wheel.

Preferably, the shell upper and lower side is respectively arranged with upper end cover and bottom end cover, and end is provided between end cap and shell Lid sealing ring.

Reductor described in the utility model, there is following superiority：

Needle bearing is used between one, eccentric wheels and Cycloidal Wheel, reduces space-consuming, to cyclo drive axle and its bushing Accommodation space is left, and bigger cyclo drive shaft diameter can be used.

Two, pass through a pair of Cycloidal Wheel common drivings so that eccentric force suffered by bearing is cancelled out each other, and shaft strength tends to be flat Weighing apparatus, reduce bearing shake and abrasion, improve the reductor life-span.

Three, shells and external toothing are design for disassembly, are convenient for changing and reduce difficulty of processing, are secured by positioning key The position of external toothing opposite shell.

Brief description of the drawings

Fig. 1 is a kind of embodiment appearance schematic diagram of reductor described in the utility model, and Fig. 2 is the utility model Reductor AA faces schematic cross-sectional view along Fig. 1, Fig. 3 are that reductor described in the utility model BB faces section view along Fig. 2 is illustrated Figure, Fig. 4 are reductor described in the utility model CC faces schematic cross-sectional view along Fig. 2, the entitled 1- shells of reference in figure, 2- Clamp ring, 3- upper end covers, 4- bottom end covers, 5- housing mounting holes, 6- eccentric shafts, 7- needle bearings, 8- external toothings, the cycloids of 9- first Wheel, 10- positioning keys, 11- cyclo drive axles, the Cycloidal Wheels of 12- second, 15- sealing rings, 16- Cycloidal Wheel spacer rings, 17- cyclo drives Neck bush.

Embodiment

Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is described in further detail.

Reductor described in the utility model, including shell 1 and the first Cycloidal Wheel 9 and the second Cycloidal Wheel in shell 12, it is provided with two coaxial external toothings 8 in the shell, the tooth of mutual cooperation is provided with the inside of external toothing and on the outside of Cycloidal Wheel Tooth, the external diameter of the Cycloidal Wheel are less than external toothing internal diameter；The Cycloidal Wheel center is provided with needle bearing；First Cycloidal Wheel and The engagement place and external toothing axle center three point on a straight line of two Cycloidal Wheels and external toothing, and engagement place is located at axle center both sides respectively.

Fig. 1 is a kind of embodiment appearance schematic diagram of the utility model, and enclosure sets reducing transmission structure, outside Upper end cover 3 and bottom end cover 4 are respectively arranged with the top and bottom of shell, for closing bearing, end cap is provided between end cap and shell Sealing ring 15, prevent liquid infiltration or internal lubrication oil seepage；Clamp ring 2 is provided with eccentric shaft on shell, facilitates power Connection and dismounting between axle and reductor, overcome under locking state may occur between line shaft and eccentric shaft 6 it is relative Slide.

As shown in Figures 2 to 4, Fig. 2 is reductor described in the utility model AA faces schematic cross-sectional view along Fig. 1, and Fig. 3 is this reality With the new reductor, BB faces schematic cross-sectional view, Fig. 4 are that reductor described in the utility model CC along Fig. 2 is cutd open in face along Fig. 2 Depending on schematic diagram.Line shaft is usually motor shaft, by eccentric shaft input power, drives two cycloids to rotate by needle bearing It is dynamic, and rotated by Cycloidal Wheel with the driving reductor that engages of external toothing, the first Cycloidal Wheel and the second Cycloidal Wheel and external toothing Engagement place and external toothing axle center three point on a straight line, and engagement place is located at axle center both sides respectively so that it is eccentric caused by the two countershaft Force direction is opposite and can completely or partially offset, so as to significantly mitigate the eccentric force that machine shaft is subject to；The external diameter of Cycloidal Wheel is small In external toothing internal diameter, rotating speed is reduced when the rotation of Cycloidal Wheel is output to external toothing by transmission, realizes deceleration transmission.Such as Fig. 3 Or shown in Fig. 4, it can be engaged on the outside of external toothing by a pair of same positioning keys 10 diametrically with shell, between two Cycloidal Wheels One Cycloidal Wheel spacer ring 16 can be set, prevent from interfering with each other between two Cycloidal Wheels.

In embodiment shown in Fig. 3 to 4, eight symmetrical cyclo drives are provided with the Cycloidal Wheel Axle, it can also be provided that four, the quantity such as six, cyclo drive axle is used to transmit the turning moment that Cycloidal Wheel is subject to；Cycloid passes Cyclo drive neck bush 17 can be set in moving axis, make cyclo drive axle more firm when working.

Reductor described in the utility model, there is following superiority：

Two, pass through a pair of Cycloidal Wheel common drivings so that eccentric force suffered by bearing is cancelled out each other, and shaft strength tends to be flat Weighing apparatus, reduce bearing shake and abrasion, improve the reductor life-span,

Previously described is each preferred embodiment of the present utility model, the preferred embodiment in each preferred embodiment If not obvious contradictory or premised on a certain preferred embodiment, each preferred embodiment can be arbitrarily superimposed It is applied in combination, the design parameter in the embodiment and embodiment is merely to clearly state the utility model of utility model people Verification process, and be not used to limit scope of patent protection of the present utility model, scope of patent protection of the present utility model still with Its claims is defined, every equivalent structure change made with specification of the present utility model and accompanying drawing content, similarly It should be included in the scope of protection of the utility model.

Claims

A kind of 1. reductor, it is characterised in that：The first Cycloidal Wheel and the second Cycloidal Wheel including shell and in shell, it is described Two coaxial external toothings are provided with shell, the teeth of mutual cooperation are provided with the outside of external toothing inner side and Cycloidal Wheel, it is described The external diameter of Cycloidal Wheel is less than external toothing internal diameter；The Cycloidal Wheel center is provided with needle bearing；First Cycloidal Wheel and the second cycloid Engagement place and external toothing axle center three point on a straight line of the wheel with external toothing, and engagement place is located at axle center both sides respectively.
2. reductor as claimed in claim 1, it is characterised in that multiple symmetrical cycloids are provided with the Cycloidal Wheel Power transmission shaft.
3. reductor as claimed in claim 2, it is characterised in that the quantity of the cyclo drive axle is eight.
4. reductor as claimed in claim 2, it is characterised in that be provided with cyclo drive axle bush on the outside of the cyclo drive axle Set.
5. reductor as claimed in claim 1, it is characterised in that pass through a pair of same determining diametrically on the outside of the external toothing Position key is engaged with shell.
6. reductor as claimed in claim 1, it is characterised in that be provided with clamp ring on the eccentric shaft on the shell.
7. reductor as claimed in claim 1, it is characterised in that be provided between first Cycloidal Wheel and the second Cycloidal Wheel Cycloidal Wheel spacer ring.
8. reductor as claimed in claim 1, it is characterised in that the shell upper and lower side is respectively arranged with upper end cover and lower end Lid, is provided with end cap seal circle between end cap and shell.