CN201318432Y - Helical gear and clearance elimination structure thereof - Google Patents
Helical gear and clearance elimination structure thereof Download PDFInfo
- Publication number
- CN201318432Y CN201318432Y CNU2008202160522U CN200820216052U CN201318432Y CN 201318432 Y CN201318432 Y CN 201318432Y CN U2008202160522 U CNU2008202160522 U CN U2008202160522U CN 200820216052 U CN200820216052 U CN 200820216052U CN 201318432 Y CN201318432 Y CN 201318432Y
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- China
- Prior art keywords
- helical gear
- helical
- gap
- helical teeth
- eliminating structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Gear Transmission (AREA)
Abstract
The utility model provides a helical gear clearance elimination structure capable of eliminating transmission clearance of the helical gear and a helical gear with a clearance elimination mechanism. The clearance elimination mechanism of the helical gear separates the helical gear along the cross section of the helical gear into two split parts. An elastic element is arranged between the two parts, thus enabling the two parts to separate along the axial direction under normal condition. The two parts are connected in a force transmission form in circumferential direction.
Description
Technical field
The utility model relates to the helical gear in the mechanical transmission, specifically, is the helical gear that can eliminate the gear transmission gap.
Technical background
Helical gear driven load is big, and stable drive is the drive mechanism of using always.But because multiple factors such as the accuracy of manufacturing of gear, mechanical assembly precision, assembly technology requirements, gear transmission unavoidably has drive gap.Drive gap has influenced transmission accuracy, and then can influence manufacturing, machining accuracy.Do not eliminate drive gap effectively to improve the anti-backlash mechanism of transmission accuracy but now also have.
The model utility content
The purpose of this utility model provides a kind of helical gear gap-eliminating structure of eliminating the helical gear drive gap.
This helical gear gap-eliminating structure is divided into split type two-part with helical gear along the helical gear cross section, makes the elastic element that these two-part separate vertically, these two-part become power transmission in the circumference when being arranged on normality between two-part and connects.
The utility model provides the helical gear that contains above-mentioned anti-backlash mechanism simultaneously.
For the convenience of its working principle is described, we are becoming split type two-part to divide another name first portion, second portion, and the helical teeth in the first portion is called first helical teeth, and the helical teeth on the second portion is called second helical teeth.When helical gear that contains this crack that disappears and other helical gear (we are referred to as the 3rd helical gear) engagement, because the existence of elastic element makes first and second part be separated vertically, this just cause on first helical teeth and second helical teeth different sides respectively with the 3rd helical gear on different helical teeth sides engagements (that is to say, when the right flank of a helical teeth on the left surface of first helical teeth and the 3rd helical gear contacted, the right flank of second helical teeth then contacted with the left surface of another one helical teeth on the 3rd helical gear; Perhaps, when the left surface of a helical teeth on the right flank of first helical teeth and the 3rd helical gear contacts, the left surface of second helical teeth then contacts with the right flank of another one helical teeth on the 3rd helical gear), so promptly eliminated helical teeth on the 3rd helical gear and the drive gap between the helical gear helical teeth of the present utility model.Because first portion becomes power transmission in the circumference with second portion and is connected, so first portion and second portion all can be distinguished transmitting torque.
As improvement, more reliably, can not produce reversing radially when making that first portion, second portion separate vertically, described elastic element is a plurality of, be distributed on helical gear circumferentially.Described elastic element can be spiral cylinder spring.
As improvement, the structure that described power transmission connects is: at least one rotating shaft that is parallel to the helical gear axis is passed in the hole of being opened on described two-part simultaneously.In order to make it possible to transmit bigger moment of torsion, best described rotating shaft is a plurality of, is distributed on helical gear circumferential.
Description of drawings
Fig. 1 is the structural representation of the utility model helical gear and the engagement of other helical gear.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Referring to Fig. 1, contain the helical gear 7 of gap-eliminating structure and the 3rd helical gear 3 mesh schematic representations of other normal configuration.Helical gear 7 comprises along the helical gear cross section and becomes split type first portion 1, second portion 2.Helical teeth in the first portion 1 is first helical teeth 4, and the helical teeth on the second portion 2 is second helical teeth 5.Second portion 2 contains wheel hub 8.Circumferential direction along helical gear 7 is evenly equipped with six counterbores 9,10 respectively on first portion 1, second portion 2, the countersink region 11 of counterbore 9 is relative with counterbore 10 countersink region 12.In relative countersink region 11,12 spiral cylinder pressure spring 13 is set, the spiral cylinder pressure spring makes first portion 1, second portion 2 separate vertically when normality.Six bolts 14 pass counterbore 9, spiral cylinder pressure spring 13, counterbore 10 respectively, and the bolt end is screwed with nut 15.Screw bolt and nut restriction first portion and second portion 2 are in axial separable ultimate range.
Circumferential direction along helical gear 7 is evenly equipped with six through holes 19,20 respectively on first portion 1, second portion 2, in six through holes 19, be provided with straight-line rolling element pair, the fixed block 25 of straight-line rolling element pair passes through hole 20 and is connected with second portion, and the moving part 21 of straight-line rolling element pair is arranged in the through hole 19.The moving part 21 of straight-line rolling element pair can move with respect to the fixed block 25 of straight-line rolling element pair on helical gear axial direction.Straight-line rolling element pair belongs to existing apparatus.
When helical gear 7 and 3 engagements of the 3rd helical gear, the spiral cylinder pressure spring makes first and second part be separated vertically, this just cause on first helical teeth 4 and second helical teeth 5 different sides respectively with the 3rd helical gear on different helical teeth side engagements, that is to say, when the right flank of a helical teeth on the left surface of first helical teeth 4 and the 3rd helical gear contacted, the right flank of second helical teeth 5 then contacted with the left surface of another one helical teeth on the 3rd helical gear; Perhaps, when the left surface of a helical teeth on the right flank of first helical teeth 4 and the 3rd helical gear contacts, the left surface of second helical teeth 5 then contacts with the right flank of another one helical teeth on the 3rd helical gear), so promptly eliminated helical teeth 6 on the 3rd helical gear and the drive gap between the helical gear helical teeth of the present utility model.
When first portion 1 when the moment of torsion that is subjected to helical gear 3 rotates, drive second portion 2 by the secondary moving part of straight-line rolling element and rotate together.When second portion 2 when the moment of torsion that is subjected to helical gear 3 rotates, drive first portion 1 by the secondary fixed block of straight-line rolling element and rotate together.
Claims (6)
1. helical gear gap-eliminating structure is characterized in that: helical gear is divided into split type two-part along the helical gear cross section, makes the elastic element that these two-part separate vertically, these two-part become power transmission in the circumference when being arranged on normality between two-part and connect.
2. gap-eliminating structure according to claim 1 is characterized in that: described elastic element is a plurality of, is distributed on helical gear circumferential.
3. gap-eliminating structure according to claim 1 is characterized in that: described elastic element is a spiral cylinder spring.
4. gap-eliminating structure according to claim 1 is characterized in that: the structure that described power transmission connects is: at least one rotating shaft that is parallel to the helical gear axis is passed in the hole of being opened on described two-part simultaneously.
5. gap-eliminating structure according to claim 4 is characterized in that: described rotating shaft is a plurality of, is distributed on helical gear circumferential.
6. helical gear, it is characterized in that: it contains the described gap-eliminating structure of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202160522U CN201318432Y (en) | 2008-11-24 | 2008-11-24 | Helical gear and clearance elimination structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202160522U CN201318432Y (en) | 2008-11-24 | 2008-11-24 | Helical gear and clearance elimination structure thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201318432Y true CN201318432Y (en) | 2009-09-30 |
Family
ID=41197197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202160522U Expired - Fee Related CN201318432Y (en) | 2008-11-24 | 2008-11-24 | Helical gear and clearance elimination structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201318432Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506150A (en) * | 2011-10-20 | 2012-06-20 | 天津商业大学 | Stacked gear structure with side clearance removal through elasticity |
-
2008
- 2008-11-24 CN CNU2008202160522U patent/CN201318432Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506150A (en) * | 2011-10-20 | 2012-06-20 | 天津商业大学 | Stacked gear structure with side clearance removal through elasticity |
| CN102506150B (en) * | 2011-10-20 | 2014-06-18 | 天津商业大学 | Stacked gear structure with side clearance removal through elasticity |
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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: 20090930 Termination date: 20141124 |
|
| EXPY | Termination of patent right or utility model |