CN201973177U - Combined double helical tooth non-backlash transmission device - Google Patents
Combined double helical tooth non-backlash transmission device Download PDFInfo
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- CN201973177U CN201973177U CN2011200291422U CN201120029142U CN201973177U CN 201973177 U CN201973177 U CN 201973177U CN 2011200291422 U CN2011200291422 U CN 2011200291422U CN 201120029142 U CN201120029142 U CN 201120029142U CN 201973177 U CN201973177 U CN 201973177U
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- transmission device
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Abstract
The utility model discloses a combined double helical tooth non-backlash transmission device, which comprises a first main bearing helical gear, a second main bearing helical gear, a first accessory bearing helical gear, a second accessory bearing helical gear and axial adjusting devices, wherein the first main bearing helical gear is meshed with the second main bearing helical gear, and the first accessory bearing helical gear is meshed with the second accessory bearing helical gear. The turning direction of the accessory bearing helical gears is opposite to that of the main bearing helical gears, and the axial adjusting devices are arranged at two ends of a gear set consisting of the second main bearing helical gear and the second accessory bearing helical gear. The two helical gear sets opposite in turning direction form a gear pair, overall backlash among the gears is eliminated by adjusting axial positions, and non-backlash transmission is realized so that impact and noise in transmission are reduced. Moreover, the combined double helical tooth non-backlash transmission device is not limited by transmission torque and has wide applicability. In terms of gear machining, mature and universal rough and fine processing equipment can be used for processing, and the combined double helical tooth non-backlash transmission device is fine in manufacturability, low in cost and especially applicable to occasions with higher requirements for precision, high speed, heavy duty and the like.
Description
Technical field
The utility model relates to the gear-box technical field, and particularly a kind of combined type diclinic tooth does not have the side clearance transmission device.
Background technique
When Gear Transmission Design, consider the lubricated of the gear teeth, thermal expansion, manufacturing errors etc. all can design certain gear backlash.Along with the science and technology development progress with to the demand of high-quality product, particularly accurate, at a high speed, the growth requirement of heavy load transmission has proposed higher requirement to the control of gear backlash.Under the situation of one-way rotation, sideshake just can produce impact when starting, but under the situation of frequent clockwise and anticlockwise, gear backlash will cause frequent impact, for oil-engine driven gear train assembly, combusted cylinder can make output torque produce fluctuation inevitably and make gear contact suddenly or disengagement, if the driven gear ratio of inertias is big and the driving gear torque ripple is very fast, the perhaps less and fluctuation of gear pair moment of torsion, the gear impact noise just may become serious problem and must solve.
In order to improve gear-driven stationarity and precision, eliminate backlash, method commonly used now has bidentate wheel side set driving method:
Two web gears are sleeved on together and are meshed with the another one wide gear, by spring two web gear dislocation are pressed close to respectively with the teeth groove left and right side of wide gear, thereby eliminate backlash.This method can be eliminated whole gaps continuously as the wearing and tearing of not considering tooth and bearing, and not strict to the tolerance in normal value source, its shortcoming mainly is: the bearing capacity of spring must be greater than maximum driven loads, so only limit to the lower gear transmission of torque ratio, and complex structure, assembling inconvenience.
Regulate centre distance by excentric sleeve and also can eliminate backlash, its shortcoming is that regulation range is less, and is higher to matching requirements.Can also adopt the special gear pair of method design that radially becomes transverse tooth thickness to eliminate the gap, this method since attenuate transverse tooth thickness the intensity of the gear teeth is reduced, its slip ratio is along constantly changing the wearing and tearing that directly increase gear on the axial direction when meshing on the other hand, also very difficult to its processing such as roll flute shaving of carrying out precision, manufacturability is poor.
The model utility content
In view of this, the utility model provides a kind of combined type diclinic tooth not have the side clearance transmission device, to eliminate or to reduce backlash, reduces vibration and noise, prolongs the working life of gear.
For achieving the above object, the utility model provides following technological scheme:
A kind of combined type diclinic tooth does not have the side clearance transmission device, comprising:
The intermeshing first main carrying helical gear and the second main carrying helical gear;
The intermeshing first secondary carrying helical gear and the second secondary carrying helical gear, the described first main carrying helical gear and the coaxial setting of the described first secondary carrying helical gear, the described second main carrying helical gear and the coaxial setting of the described second secondary carrying helical gear, the helical gear rotation direction of secondary carrying is opposite with the helical gear rotation direction of main carrying;
Be arranged on the axial-adjustment unit at the gear train two ends of forming by the described second main carrying helical gear and the described second secondary carrying helical gear.
Preferably, do not have in the side clearance transmission device at combinations thereof formula diclinic tooth, also comprise the screw thread accent crack end cap that is arranged on the gear train two ends of forming by the described second main carrying helical gear and the described second secondary carrying helical gear, this screw thread transfers the outer ring of crack end cap to be threaded with the casing body, and this screw thread transfers a side of crack end cap to contact with the bearing of described gear train both sides.
Preferably, do not have in the side clearance transmission device, also comprise the elastic element that is arranged between described screw thread accent crack end cap and the described bearing at combinations thereof formula diclinic tooth.
Preferably, do not have in the side clearance transmission device at combinations thereof formula diclinic tooth, described elastic element is a pressure spring.
Preferably, do not have in the side clearance transmission device at combinations thereof formula diclinic tooth, the helical gear helix angle of main carrying is carried helical gear helix angle less than pair, and the helical gear facewidth of described main carrying is greater than the helical gear facewidth of described secondary carrying.
Preferably, do not have in the side clearance transmission device at combinations thereof formula diclinic tooth, be provided with the described second main carrying helical gear and be connected by second coupling shaft with helical gear two transmission shafts of the described second secondary carrying, described second coupling shaft is the flexible joining shaft that allows to reverse with axial deformation.
Preferably, do not have in the side clearance transmission device at combinations thereof formula diclinic tooth, be provided with the described first main carrying helical gear and be connected by first coupling shaft with helical gear two transmission shafts of the described first secondary carrying, described first coupling shaft is the flexible joining shaft that allows to reverse with axial deformation.
Preferably, do not have in the side clearance transmission device at combinations thereof formula diclinic tooth, be provided with the described first main carrying helical gear and be connected by first coupling shaft with helical gear two transmission shafts of the described first secondary carrying, described first coupling shaft is a solidity coupled shaft.
Preferably, do not have in the side clearance transmission device at combinations thereof formula diclinic tooth, levy and be that at least one is the combined type helical gear for the described first secondary carrying helical gear and the described second secondary carrying helical gear, this combined type helical gear comprises:
Wheel hub;
Be contained in gear ring on the described wheel hub by the resilient connection guide.
Preferably, do not have in the side clearance transmission device at combinations thereof formula diclinic tooth, described resilient connection pin is N type, M type or X type resilient connection pin.
From above-mentioned technological scheme as can be seen, the utility model is by forming a special gear pair with the opposite bevel gear set of two cover rotation directions, by regulating axial-adjustment unit, thereby eliminated the overall sideshake between the gear, realize no sideshake transmission, thereby reduced impact and the noise in the transmission.And this combined type diclinic tooth does not have the restriction that the side clearance transmission device can not be subjected to the transmitting torque size, has extensive applicability.Can adopt ripe general thick finish machining equipment to process aspect Gear Processing, the good manufacturability cost is low, is specially adapted to precision, and at a high speed, heavy duty etc. need the occasion of high requirement.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The combined type diclinic tooth that Fig. 1 provides for the utility model embodiment one does not have the structural representation of side clearance transmission device;
The combined type diclinic tooth that Fig. 2 provides for the utility model embodiment two does not have the structural representation of side clearance transmission device;
The combined type diclinic tooth that Fig. 3 provides for the utility model embodiment three does not have the structural representation of side clearance transmission device;
The structural representation of the backlash adjustment process one that Fig. 4 provides for the utility model embodiment;
The structural representation of the backlash adjustment process two that Fig. 5 provides for the utility model embodiment;
The structural representation of the backlash adjustment process three that Fig. 6 provides for the utility model embodiment;
The structural representation of the backlash adjustment process four that Fig. 7 provides for the utility model embodiment;
The pair that Fig. 8 provides for the utility model embodiment is carried helical gear structural representation.
Embodiment
The utility model discloses a kind of combined type diclinic tooth does not have the side clearance transmission device, to eliminate or to reduce backlash, reduces vibration and noise, prolongs the working life of gear.
Below in conjunction with the accompanying drawing among the utility model embodiment, the technological scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
See also Fig. 1, the combined type diclinic tooth that Fig. 1 provides for the utility model embodiment one does not have the structural representation of side clearance transmission device.
The combined type diclinic tooth that the utility model provides does not have the side clearance transmission device, comprising:
The intermeshing first main carrying helical gear 5 and the second main carrying helical gear 13;
The intermeshing first secondary carrying helical gear 2 and the second secondary carrying helical gear 16, wherein, the first main carrying helical gear 5 and the 2 coaxial settings of the first secondary carrying helical gear, the described second main carrying helical gear 13 and the 16 coaxial settings of the described second secondary carrying helical gear, the rotation direction of the described first secondary carrying helical gear 2 and the second secondary carrying helical gear 16 is opposite with the rotation direction of the described first main carrying helical gear 5;
Be arranged on the axial-adjustment unit at the gear train two ends of forming by the described second main carrying helical gear 13 and the described second secondary carrying helical gear 16, say that generally this axial-adjustment unit is arranged on the outside of the bearing at these gear train two ends (17,12).
See also Fig. 4-Fig. 7, the structural representation of the backlash adjustment process one that Fig. 4 provides for the utility model embodiment, the structural representation of the backlash adjustment process two that Fig. 5 provides for the utility model embodiment, the structural representation of the backlash adjustment process four that the structural representation of the backlash adjustment process three that Fig. 6 provides for the utility model embodiment, Fig. 7 provide for the utility model embodiment.
As shown in Figure 4, when not loading axial force, all there is certain clearance between the gear teeth of secondary carrier gear (101,102) and between the gear teeth (103,104) of main carrier gear, for convenience of description, deliberately the amplification of expansiveness carried out in the gap among the figure.
As shown in Figure 5 and Figure 6, after adding axial force, the addendum surface of secondary carrier gear gear teeth 102 at first contacts with the Dedendum surface of another secondary carrier gear gear teeth 101, but this moment, the main carrier gear gear teeth did not also reach, along with continuing to increase axial displacement, produce relative reversing between secondary carrier gear and the main carrier gear, the Dedendum surface of last main carrier gear gear teeth 104 contacts with the addendum surface of another main carrier gear gear teeth 103, thereby the sideshake when just having eliminated gear engagement, but, store lubricated wet goods still existing the gap to be used to compensate the thermal expansion of gear on the engagement circumferential cross-section arbitrarily.
As shown in Figure 7, the Dedendum surface of master's carrier gear gear teeth 104 contacted engagement with the addendum surface of the main carrier gear gear teeth 103 when gear was just changeing, when gear reverses, secondary carrier gear at first contacts engagement, but because its rigidity is relatively poor, bearing capacity is limited, produces relative reversing again between main carrier gear and the secondary carrier gear, contacts engagement until the Dedendum surface of the main carrier gear gear teeth 103 and the addendum surface of the main carrier gear gear teeth 104.Transmitting torque hour only relies on secondary carrier gear just can finish, and transmitting torque is when big, main carrier gear participation bearing load.Just changeing counter-rotating so at any time all has one group of flank of tooth to participate in engagement, thereby has eliminated backlash, has reduced impact shock and noise and has made transmission more steady.
The utility model is by forming a special gear pair with the opposite bevel gear set of two cover rotation directions, by regulating axial-adjustment unit, thereby eliminated the overall sideshake between the gear, realized no sideshake transmission, thereby reduced impact and the noise in the transmission.And this box-like diclinic tooth does not have the restriction that the side clearance transmission device can not be subjected to the transmitting torque size, has extensive applicability.Can adopt ripe general thick finish machining equipment to process aspect Gear Processing, the good manufacturability cost is low, is specially adapted to precision, and at a high speed, heavy duty etc. need the occasion of high requirement.
As shown in Figure 1, in order further to optimize technique scheme, the axial-adjustment unit that the utility model provides is that screw thread is transferred crack end cap (9,20), this screw thread transfers the outer ring of crack end cap to be threaded with casing 1, and this screw thread transfers a side of crack end cap to contact with the bearing of described gear train both sides.By transferring crack end cap 20 can push bearing 17 to the right rotation screw thread, by transferring crack end cap 9 can push bearing 12 to the anticlockwise screw thread, thereby adjust the axial position of the second main carrying helical gear 13 and the second secondary carrying helical gear 16, then eliminate the backlash between the first main carrying helical gear 5 and the second main carrying helical gear 13, and the backlash between the first secondary carrying helical gear 2 and the second secondary carrying helical gear 16.
In order further to optimize technique scheme, the utility model also can comprise the elastic element 18 that is arranged between described screw thread accent crack end cap and the described bearing, and promptly elastic element 18 is arranged on the end that compresses that screw thread is transferred the crack end cap.This elastic element 18 can be pressure spring or other elastomers, and the function of elastic element 18 is that compensation is because the gap that gear produces owing to wearing and tearing.In order to prevent oil leak, in transferring the crack end cap, screw thread also is embedded with sealing gasket 10.
The first main carrying helical gear 5 and the second main carrying helical gear 13 are meshed, the first secondary carrying helical gear 2 and the second secondary carrying helical gear 16 are meshed, the rotation direction of main carrier gear is opposite with the rotation direction of secondary carrier gear, the helix angle of secondary carrier gear is greater than the helix angle of main carrier gear, preferably, greater than angle need not too much, the helical gear facewidth of main carrying is greater than the helical gear facewidth of described secondary carrying.
Between main carrier gear and the secondary carrier gear coupling shaft (3 is arranged, 15) link, wherein link by coupling shaft 3 between the first main carrying helical gear 5 and the first secondary carrying helical gear 2, link by joining shaft 15 between the second main carrying helical gear 13 and the second secondary carrying helical gear 16.Joining shaft can be that rigidity also can be flexible, ordinary circumstance next be rigidity another be flexibility, said rigidity and flexibility are not absolute rigidity and flexibilities, and are meant that its torsional deflection of solidity coupled shaft can ignore the torsional deflection that its permission of flexible joining shaft is certain.
When work, power is transmitted by the duplicate gear pair of being made up of main carrier gear and secondary carrier gear by input shaft 11 inputs, then by output shaft 8 outputs.The duplex helical gear axial position that is made of the first main carrying helical gear 5 and the first secondary carrying helical gear 2 immobilizes, and can transfer crack end cap 9 and screw thread to transfer crack end cap 19 to carry out the adjustment of axial position by screw thread by the duplex helical gear axial position that the second main carrying helical gear 13 and the second secondary carrying helical gear 16 constitute.
Transfer the crack end cap to produce axial displacement by threaded together by the second main carrying helical gear 13 and the second secondary carrying helical gear 16, make sideshake between winner's carrier gear in the one side of the gear teeth, sideshake between secondary carrier gear is at the another side of the gear teeth, but eliminated backlash on the whole, when just changeing, at first mesh transferring power by main carrier gear, at first mesh by secondary carrier gear during counter-rotating, so but be out of shape till main carrier gear meshes owing to existing axial elasticity to connect less the twisting of its rigidity.Also can transmit certain moment of torsion between the secondary carrier gear under the less situation of load, secondary generally speaking carrier gear only plays the distortion buffer shock-absorbing.Be that secondary carrier gear does not generally bear reversed load when antiport, its effect is to produce the effect that a buffering is played in torsional deflection in the moment of commutation, till main carrier gear meshes.
See also Fig. 2, the combined type diclinic tooth that Fig. 2 provides for the utility model embodiment two does not have the structural representation of side clearance transmission device.
Between the first main carrier gear 5 and the second secondary carrier gear 2 is the integral structure of rigidity, under the situation of single-stage output, both can also can export like this in main carrier gear end output at secondary carrier gear end, thus the requirement of satisfied different end outputs.Adopt flexible the connection between the second main carrier gear 13 and the second secondary carrier gear 16.
See also Fig. 3, the combined type diclinic tooth that Fig. 3 provides for the utility model embodiment three does not have the structural representation of side clearance transmission device.
Have at least one to be the combined type helical gear in the first secondary carrying helical gear 2 that provides in the present embodiment and the described second secondary carrying helical gear 16, gear ring 201 is made then separately and is linked by resilient connection pin 202 and wheel hub 203.The a pair of secondary carrier gear that is meshed promptly can two structures that all adopt this built-up gear, and another adopts other structures also can one to adopt this structure.Other parts such as wheel hub of main carrier gear and secondary carrier gear are integral structure.After gear ring 201 and wheel hub 203 are subjected to opplied moment, resilient connection pin 202 between wheel hub 203 and the gear ring 201 can produce certain torsional deflection, thereby produce certain circumferential angular displacement between gear ring 201 and the wheel hub 203, so just realized between main carrier gear and the secondary carrier gear purpose in relative rotation, so just can eliminate backlash, realize no sideshake transmission.Resilient connection pin 202 is can be understood as the distortion of different in nature spring for common N type, M type and X type resilient connection pin etc., and the resilient connection pin also can be other structural types of other elastic materials.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and other embodiments' difference that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the utility model.Multiple modification to these embodiments will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to these embodiments shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. a combined type diclinic tooth does not have the side clearance transmission device, it is characterized in that, comprising:
The intermeshing first main carrying helical gear (5) and the second main carrying helical gear (13);
The intermeshing first secondary carrying helical gear (2) and the second secondary carrying helical gear (16), the described first main carrying helical gear (5) and the coaxial setting of the described first secondary carrying helical gear (2), the described second main carrying helical gear (13) and the coaxial setting of the described second secondary carrying helical gear (16), the helical gear rotation direction of secondary carrying is opposite with the helical gear rotation direction of main carrying;
Be arranged on the axial-adjustment unit at the gear train two ends of forming by the described second main carrying helical gear (13) and the described second secondary carrying helical gear (16).
2. combined type diclinic tooth as claimed in claim 1 does not have the side clearance transmission device, it is characterized in that, described axial-adjustment unit is that screw thread is transferred the crack end cap, and this screw thread transfers the outer figure of crack end cap to be threaded with the casing body, and this screw thread transfers a side of crack end cap to contact with the bearing of described gear train both sides.
3. combined type diclinic tooth as claimed in claim 2 does not have the side clearance transmission device, it is characterized in that, also comprises the elastic element (18) that is arranged between described screw thread accent crack end cap and the described bearing.
4. combined type diclinic tooth as claimed in claim 3 does not have the side clearance transmission device, it is characterized in that, described elastic element (18) is a pressure spring.
5. there is not the side clearance transmission device as each described combined type diclinic tooth of claim 1-4, it is characterized in that, the helical gear helix angle of main carrying is carried helical gear helix angle less than pair, and the helical gear facewidth of described main carrying is greater than the helical gear facewidth of described secondary carrying.
6. there is not the side clearance transmission device as each described combined type diclinic tooth of claim 1-4, it is characterized in that, two transmission shafts that are provided with the described second main carrying helical gear (13) and the described second secondary carrying helical gear (16) are connected by second coupling shaft (15), and described second coupling shaft (15) is the flexible joining shaft that allows to reverse with axial deformation.
7. combined type diclinic tooth as claimed in claim 6 does not have the side clearance transmission device, it is characterized in that, two transmission shafts that are provided with the described first main carrying helical gear (5) and the described first secondary carrying helical gear (2) are connected by first coupling shaft (3), and described first coupling shaft (3) is the flexible joining shaft that allows to reverse with axial deformation.
8. combined type diclinic tooth as claimed in claim 6 does not have the side clearance transmission device, it is characterized in that, two transmission shafts that are provided with the described first main carrying helical gear (5) and the described first secondary carrying helical gear (2) are connected by first coupling shaft (3), and described first coupling shaft (3) is a solidity coupled shaft.
9. there is not the side clearance transmission device as each described combined type diclinic tooth of claim 1-4, it is characterized in that, at least one is the combined type helical gear for the described first secondary carrying helical gear (2) and the described second secondary carrying helical gear (16), and this combined type helical gear comprises:
Wheel hub (203);
Be sleeved on tooth figure (201) on the described wheel hub (203) by resilient connection pin (202).
10. combined type diclinic tooth as claimed in claim 9 does not have the side clearance transmission device, it is characterized in that, described resilient connection pin (202) is N type, M type or X type resilient connection pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200291422U CN201973177U (en) | 2011-01-27 | 2011-01-27 | Combined double helical tooth non-backlash transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200291422U CN201973177U (en) | 2011-01-27 | 2011-01-27 | Combined double helical tooth non-backlash transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201973177U true CN201973177U (en) | 2011-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200291422U Expired - Fee Related CN201973177U (en) | 2011-01-27 | 2011-01-27 | Combined double helical tooth non-backlash transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201973177U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102363152A (en) * | 2011-10-14 | 2012-02-29 | 山东焱鑫矿用材料加工有限公司 | Production equipment of steel for non-cold processing joint |
| CN112178152A (en) * | 2020-10-16 | 2021-01-05 | 魏家斌 | Bevel gear differential mechanism |
-
2011
- 2011-01-27 CN CN2011200291422U patent/CN201973177U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102363152A (en) * | 2011-10-14 | 2012-02-29 | 山东焱鑫矿用材料加工有限公司 | Production equipment of steel for non-cold processing joint |
| CN112178152A (en) * | 2020-10-16 | 2021-01-05 | 魏家斌 | Bevel gear differential mechanism |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110914 Termination date: 20180127 |