CN2385147Y - Equal-diameter gear speed reducer - Google Patents
Equal-diameter gear speed reducer Download PDFInfo
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- CN2385147Y CN2385147Y CN 99232055 CN99232055U CN2385147Y CN 2385147 Y CN2385147 Y CN 2385147Y CN 99232055 CN99232055 CN 99232055 CN 99232055 U CN99232055 U CN 99232055U CN 2385147 Y CN2385147 Y CN 2385147Y
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Abstract
The utility model relates to an equal-diameter gear speed reducer, which is composed of a housing, a parallelogram swing mechanism 1, a cam supporting and pressing mechanism, a variable-speed gear, an input shaft, and an output shaft. The utility model is characterized in that the variable-speed gear is composed of at least more than two equal-diameter gears, and inner gears, wherein, the equal-diameter gears are provided with driving pins; the parallelogram swing mechanism is composed of a pinhole disk, a floating disk, a small crank, a bearing, an eccentric sleeve, and a bearing; the cam supporting and pressing mechanism is composed of a cam, a flexibility bearing, a sliding sleeve, and an elastic restraint ring. The parallelogram swing mechanism and the cam supporting and pressing mechanism are alternatively exerted on more than two equal-diameter gears together, so outer gears which are uniformly distributed on the equal-diameter gears are completely engaged with the inner gears; the utility model which is in an integral state is driven by the floating disk, and thereby, the speed reduction can be realized.
Description
The utility model relates to transmission device, particularly a kind of Equal-diameter gear retarder with auto-lock function.
Existing retarder adopts multiple tooth line Contact Transmission or multiple tooth Contact Transmission mode mostly, all belong to line touch scrolling friction driving as " common involute tooth wheel decelerator ", " cycloidal-pin wheel retarder " etc., have advantages such as transmission efficiency height, volume be little, but because the flank of tooth area of contact of line Contact Transmission is little, thereby make bearing capacity be subjected to certain restriction, and machining accuracy will reach difficulty of multiple tooth engagement simultaneously, the number of teeth of driving component increases with the increase of reduction speed ratio in addition, makes dwindling of volume be subjected to certain limitation.And for example a kind of " harmonic gear reducer ", belong to multiple tooth Contact Transmission, flank of tooth specific pressure is little, thereby have very high bearing capacity and an impact resistance, the volume ratio common gear reducer is little, but because harmonic driving is by flexible bearing roof pressure flexbile gear fully, triangle external tooth uniform on the flexbile gear is wedged in the internal serration teeth groove on the steel wheel successively, realize gearing down, belong to the sliding friction transmission, mechanical efficiency is not high, therefore only be applicable to the transmission of smaller power, and because flexible bearing and flexbile gear are very high to the fatigue resistance requirement of material, accuracy of manufacturing requires high, and difficulty of processing is big.
In the patent documentation of China many reports about gear reducer are arranged also at present, as Chinese patent CN91216553 disclosed a kind of " planet differential retarder ", it is by the shell internal box, tie-plate, end cap is formed, motor is fixed by bolts on the tie-plate, inner transmission partly is made up of planetary pinion transmission and differential gear transmission two, input shaft connects with the duplex sun gear, in the planet gear transmission partly, planet carrier is fixed on the retarder shell, sun gear drives the duplex internal gear by planet wheel and rotates, form a component velocity, in the differential gear driving section, sun gear and duplex internal gear mesh with planet wheel simultaneously, carry out the synthetic of speed, and synthetic speed is exported by the output shaft of band planet carrier.Chinese patent CN91230101 " the multistage cylinder gear speed reducer of twin shaft ", be on the basis of twin shaft single cylindrical gear reducer structure, cooperating several duplicate gears again behind the fixedly connected gear on the every axle, the indirect certain rules of gear is meshing with each other, and making its retarder transmission is the Zn+1 level.In addition, also have such as CN96245686 " novel movable teeth reducer ", CN96204914 " interior three ring gear retarders ", CN88204116 " twin-stage harmonic gear reducer " etc., the structure of these gear reducers is different.
Analyze from excellent, the shortcoming of existing gear reducer, improve the bearing capacity and the reduced volume of retarder, must adopt multiple tooth contact form between master driver and the transmission part, increase the area of contact of the flank of tooth, reduce flank of tooth specific pressure, and to improve the mechanical efficiency of retarder, must eliminate the slide relative friction between (or minimizing) driving component.
The purpose of this utility model is on the basis of existing technology, be to realize multiple tooth contact form between the driving component, eliminates the sliding friction between the driving component and designs a kind of gear reducer of new structure.
The purpose of this utility model is achieved through the following technical solutions:
A kind of Equal-diameter gear retarder is made up of casing, parallelogram swing mechanism, cam top-pressure mechanism, speed change gear, input shaft, output shaft, it is characterized in that:
A. speed change gear is made up of Equal-diameter gear that has driving pin more than at least two and internal gear;
B. the curved shaft type parallelogram swing mechanism formed by pin-and-hole dish, floating disc, small crankshaft, bearing, eccentric bushing, bearing of parallelogram swing mechanism, on the same circumference diameter of pin-and-hole dish and floating disc, be distributed with axle sleeve hole, it in the axle sleeve hole bearing, the two ends of each small crankshaft are installed in respectively in the bearing hole of pin-and-hole dish and floating disc, eccentric bushing is fixed on the input shaft, between the endoporus of eccentric bushing cylindrical and floating disc bearing is housed;
C. the cam top-pressure mechanism is made up of cam, flexible bearing, sliding sleeve, elastic restraint ring, cam is fixed on the middle part of input shaft, flexible bearing is installed on the excircle of cam, sliding sleeve places in the uniform radial groove in floating disc two ends, the driving pin at each Equal-diameter gear two ends is respectively charged in the endoporus of sliding sleeve, and each Equal-diameter gear retrains with the elastic restraint ring.
The utility model also has following technical characteristics:
The throw of eccentric of small crankshaft is identical with the throw of eccentric of eccentric bushing.
Floating disc is a driving link, and pin-and-hole dish and internal gear be fixed block and driven member each other, and wherein one is fixed on the casing, and another part then is fixed on the output shaft.
The direct roof pressure of cam is installed in the bearing on the Equal-diameter gear, and floating disc is by each bearing pin and bearing and pin-and-hole dish formation pin axle type parallelogram swing mechanism.
On the Equal-diameter gear on uniform external tooth and the internal gear profile of tooth of uniform internal tooth identical, pitch of teeth t is identical, the tooth-shape angle Φ of external tooth is corresponding identical with internal tooth groove angle Φ ', the circumference pitch diameter is identical.
According to the Equal-diameter gear retarder that the utility model proposes, Equal-diameter gear is that structure is under the state of one contact also with multiple tooth of internal gear, realize transmission by driving pin, promptly the face contact strength of several teeth is changed into the shear strength of bigger driving pin, thereby had high bearing capacity and good impact resistance.Because the two-way lock function that the isometrical roof pressure of cam angle α produces internal gear by Equal-diameter gear, make this retarder have reliable bidirectional self-locking function, fundamentally solve the self-locking problem from retarder inside, and had higher mechanical efficiency (η=0.95～0.98).
Because of this reducing gear has two-way lock function, the braking device that has replaced lifting means, thereby removed brake shoe was in use made regular check on, keeps in repair, changes to lifting means to break a series of activities from, eliminated the possibility that causes security incident because of brake troubles and misoperation, the unfailing performance and the Safety performance of lifting means have fundamentally been improved, and can directly reducing gear be packed in the rope drum, be the desirable update product of lifting means.Be specially adapted to lifting means such as winch, crane, also can be used on other retarding device.
The manufacture cost of this retarder, difficulty of processing and volume are all less than common gear reducer, cycloidal-pin wheel retarder, movable teeth reducer and harmonic gear reducer.
Fig. 1 is one of the utility model embodiment's a structural representation;
Fig. 2 is the B-B sectional view of Fig. 1;
Fig. 3 is embodiment's two a structural representation.
The utility model will be further described according to accompanying drawing embodiment below:
As shown in Figure 1 and Figure 2, the Equal-diameter gear retarder is by casing 5, parallelogram swing mechanism, protruding, compositions such as wheel top-pressure mechanism, speed change gear, input shaft 7, output shaft 1, it is to utilize one group of parallelogram swing mechanism and one group of common alternating action of cam top-pressure mechanism in two above Equal-diameter gears, external tooth uniform on the Equal-diameter gear and internal gear are meshed fully, structure be under the state of one by the floating disc transmission, thereby realize slowing down.Wherein: speed change gear is formed by the Equal-diameter gear 13 that has driving pin more than at least two (present embodiment adopts four Equal-diameter gears) with the internal gear 12 that casing 5 is fixed; The curved shaft type parallelogram swing mechanism that the parallelogram swing mechanism is made up of pin-and-hole dish 9, floating disc 10, small crankshaft 22, bearing 21, eccentric bushing 18, bearing 17, on the same circumference diameter of pin-and-hole dish 9 and floating disc 10, be distributed with axle sleeve hole, it in the axle sleeve hole bearing 21, the two ends of each small crankshaft 22 are installed in respectively in the bearing hole of pin-and-hole dish 9 and floating disc 10, eccentric bushing 18 is fixed on the input shaft 7, bearing 17 is housed between the endoporus of eccentric bushing cylindrical and floating disc, and the throw of eccentric of small crankshaft 22 is identical with the throw of eccentric A of eccentric bushing 18; The cam top-pressure mechanism is a kind of flexible cam top-pressure mechanism, form by cam 15, flexible bearing 14, sliding sleeve 11, elastic restraint ring 23, two cams 15 (or the several angle that interlaces) in the same way are fixed on the middle part of input shaft 7, flexible bearing 14 is installed on the excircle of cam, sliding sleeve 11 (or adopting bearing) places in the uniform radial groove in floating disc 10 two ends, the driving pin at each Equal-diameter gear 13 two ends is respectively charged in the endoporus of sliding sleeve 11, each Equal-diameter gear makes it to keep in touch with flexible bearing 14 all the time with 23 constraints of elastic restraint ring.
The effect of parallelogram swing mechanism is: making floating disc produce movement locus with the input shaft rotation is the plane motion of circumference, thereby makes each Equal-diameter gear do periodic tangential motion; Flexible action of cam is: with the rotation of input shaft, the Equal-diameter gear that is distributed on the internal gear circumference is periodically replaced the engagement fully that keeps certain hour with internal gear.
On the Equal-diameter gear 13 on uniform external tooth (can adopt triangle, trapezoidal or corrugated tooth) and the internal gear 12 profile of tooth of uniform internal tooth identical, pitch of teeth t is identical, the tooth-shape angle Φ of external tooth is corresponding identical with the groove angle Φ ' of internal tooth, the circumference pitch diameter is identical.
In upper member, floating disc 10 is a driving link, and pin-and-hole dish 9 and internal gear 12 be fixed block and driven member each other, and wherein one is fixed on the casing 5, and another part then is fixed on the output shaft 1.
When internal gear 12 fixedly the time, 10 of floating discs produce periodic pendular movements, thereby drive pin-and-hole dishes 9 and output shaft 1 rotation by small crankshaft 22, realize slowing down.
Fig. 3 illustrates another embodiment of the present utility model, this routine main structure feature is identical with precedent, difference is that its internal gear 12 is fixed on the output shaft 1, pin-and-hole dish 9 combines as a whole with casing 5, cam 15 direct roof pressures are installed in the bearing 24 on the Equal-diameter gear 13, each bearing pin 25 is fixed on the floating disc 10, and inserts in the endoporus of pin-and-hole inner bearing 21 corresponding on the pin-and-hole dish 9, constitutes pin axle type parallelogram swing mechanism with pin-and-hole dish 9.
Fixing when pin-and-hole dish 9, during input shaft 7 rotations, floating disc 10 is subjected to the constraint of bearing pin 25 under the excitement of eccentric bushing 18, thereby drives driving pin and the periodically tangential swing of Equal-diameter gear 13 that is installed in the floating disc radial groove.Before the forward swing, one of them Equal-diameter gear is under the roof pressure effect of cam with internal gear and meshes the state that structure is an one fully, in the forward swing process, cam is then kept the engagement of this Equal-diameter gear and internal gear all the time, thereby forces internal gear to rotate t/n tooth pitch (t--gear pitch with the forward swing of Equal-diameter gear; N--Equal-diameter gear number), corresponding isometrical roof pressure angle α≤360 °/n, when this Equal-diameter gear descended, another Equal-diameter gear that is in corresponding position then rose to the state that meshes fully with internal gear, and the drive internal gear is rotated in the forward t/n tooth pitch again, circulation successively.Input shaft rotates a circle, and internal gear rotates a tooth pitch.
By the working principle of cam as can be known: the adjustable height h ' of cam should be greater than the tooth depth h of Equal-diameter gear, and the angle of climb β of cam is identical with angle of descent γ, promptly β=γ=(360 °-α)/2.
Be trimming moment, cam can oppositely be installed on the input shaft with eccentric bushing.
Increase the Equal-diameter gear number, can reduce the isometrical roof pressure of cam angle α (α=360 °/n), play the effect that reduces the flexible bearing amount of deformation, and irrelevant with reduction speed ratio.
All the other labels in the accompanying drawing are respectively: the 2-axle sleeve; The 3-rubber seal; The block bearing of 4-output shaft; The 6-supporting base; The 8-spacer sleeve; The 16-end cap; The 17-rolling bearing; 19-input shaft block bearing; The 20-rubber seal.
Claims (4)
1. an Equal-diameter gear retarder is made up of casing, parallelogram swing mechanism, cam top-pressure mechanism, speed change gear, input shaft, output shaft, it is characterized in that:
A. speed change gear is made up of Equal-diameter gear that has driving pin more than at least two (13) and internal gear (12);
B. the parallelogram swing mechanism is formed curved shaft type parallelogram swing mechanism by pin-and-hole dish (9), floating disc (10), small crankshaft (22), bearing (21), eccentric bushing (18), bearing (17), on the same circumference diameter of pin-and-hole dish (9) and floating disc (10), be distributed with axle sleeve hole, in the axle sleeve hole bearing (21), the two ends of each small crankshaft (22) are installed in respectively in the bearing hole of pin-and-hole dish (9) and floating disc (10), eccentric bushing (18) is fixed on the input shaft (7), and bearing (17) is housed between the endoporus of eccentric bushing cylindrical and floating disc;
C. the cam top-pressure mechanism is made up of cam (15), flexible bearing (14), sliding sleeve (11), elastic restraint ring (23), cam is fixed on the middle part of input shaft (7), flexible bearing (14) is installed on the excircle of cam, sliding sleeve (11) places in the uniform radial groove in floating disc (10) two ends, the driving pin at each Equal-diameter gear (13) two ends is respectively charged in the endoporus of sliding sleeve (11), and each Equal-diameter gear retrains with elastic restraint ring (23).
2. Equal-diameter gear retarder as claimed in claim 1 is characterized in that the throw of eccentric of small crankshaft (22) is identical with the throw of eccentric of eccentric bushing (18).
3. Equal-diameter gear retarder as claimed in claim 1 is characterized in that floating disc (10) is a driving link, and pin-and-hole dish (9) and internal gear (12) be fixed block and driven member each other, and wherein one is fixed on the casing (5), and another part then is fixed on the output shaft (1).
4. Equal-diameter gear retarder as claimed in claim 3, it is characterized in that the direct roof pressure of cam (15) is installed in the bearing (24) on the Equal-diameter gear (13), floating disc (10) constitutes pin axle type parallelogram swing mechanism by each bearing pin (25) and bearing (21) with pin-and-hole dish (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99232055 CN2385147Y (en) | 1999-07-07 | 1999-07-07 | Equal-diameter gear speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99232055 CN2385147Y (en) | 1999-07-07 | 1999-07-07 | Equal-diameter gear speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2385147Y true CN2385147Y (en) | 2000-06-28 |
Family
ID=34020809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99232055 Expired - Fee Related CN2385147Y (en) | 1999-07-07 | 1999-07-07 | Equal-diameter gear speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2385147Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461479A (en) * | 2017-09-15 | 2017-12-12 | 杭州星河传动机械研究院有限公司 | The cycloidal planetary gear speed reducer of antiseep |
-
1999
- 1999-07-07 CN CN 99232055 patent/CN2385147Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461479A (en) * | 2017-09-15 | 2017-12-12 | 杭州星河传动机械研究院有限公司 | The cycloidal planetary gear speed reducer of antiseep |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |