CN103851094A - Worm gear transmission device - Google Patents
Worm gear transmission device Download PDFInfo
- Publication number
- CN103851094A CN103851094A CN201210505297.8A CN201210505297A CN103851094A CN 103851094 A CN103851094 A CN 103851094A CN 201210505297 A CN201210505297 A CN 201210505297A CN 103851094 A CN103851094 A CN 103851094A
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- worm gear
- semicircular
- shaft
- semicircular cylinder
- shaft part
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Abstract
The invention provides a worm gear transmission device comprising a transmission shaft and a worm gear, wherein the transmission shaft is a stepped shaft, a central shaft hole is formed in the worm gear, and the transmission shaft is connected with the worm gear, and specifically, the transmission shaft is fixedly connected with the worm gear through a sleeve. The worm gear transmission device is capable of realizing highly reliable and steady connection of the worm gear and the transmission shaft; the worm gear transmission device is easy to assemble and also improved in anti-shear ability and strength.
Description
Technical field
The present invention relates to a kind of transmission device, relate in particular to a kind of worm gearing.
Background technique
In worm gear, worm gears, carry out transferring power by engagement between worm gear, worm tooth, in transmittance process, the friction of between cog is sliding friction, thereby transmission efficiency is lower, the processing technique of worm gear is required to high, making difficulty, and need manufacture worm gear with valuable antifriction metal material, therefore to seek solution route on to the design and manufacture of worm gear; In prior art, Placement between worm gear and transmission shaft in worm gearing is generally bolt or screw, so, axial connection between the two can circumferentially can be fixed again, but this Placement, bolt or screw anti-shear ability are limited, be easy to be cut off in joint, cause fault.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of assembling, worm gearing that anti-shear ability is strong of being easy to.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of worm gearing, comprises transmission shaft and worm gear, described transmission shaft is multidiameter shaft, described worm gear is provided with central shaft hole, and described transmission shaft is connected with worm gear, and described transmission shaft and worm gear are affixed by a sleeve;
Described transmission shaft comprises the first shaft part, the second shaft part and the 3rd shaft part, described the first shaft part and the second shaft part are affixed, the second shaft part and the 3rd shaft part are affixed, coaxial line between described the first shaft part, the second shaft part and the 3rd shaft part, described the first shaft section diameter is less than the second shaft section diameter, and the second shaft section diameter is less than the 3rd shaft section diameter;
The center, upper-end surface of described worm gear is provided with the first center hole, and the center, lower end surface of worm gear is provided with the second center hole, and described the first center hole and the second center hole connect, and the aperture of described the first center hole is less than the aperture of the second center hole;
Described sleeve comprises outer sleeve and inner sleeve; Described outer sleeve is made up of two semicircular cylinders, is respectively the first semicircular cylinder and the second semicircular cylinder, described the first semicircular cylinder and the second semicircular cylinder coaxial line, and the external diameter of two semicircular cylinders is equal, and the internal diameter of two semicircular cylinders is unequal; Described inner sleeve is made up of two semicircular cylinders, is respectively the 3rd semicircular cylinder and the 4th semicircular cylinder, described the 3rd semicircular cylinder and the 4th semicircular cylinder coaxial line, and the internal diameter of two semicircular cylinders is equal, and the external diameter of two semicircular cylinders is unequal; Described inner sleeve is sleeved in outer sleeve.
Further, between described inner sleeve and transmission shaft the second shaft part, be interference fit.
Further, the outer peripheral surface of described outer sleeve is provided with a ring-shaped step.
Further, between the second center hole of described outer sleeve and worm gear, be interference fit.
Further, the upper-end surface of described the first semicircular cylinder and the second semicircular cylinder is end face altogether, and the lower end surface of two semicircular cylinders end face altogether.
Further, the upper-end surface of described the 3rd semicircular cylinder and the 4th semicircular cylinder is end face altogether, and the lower end surface of two semicircular cylinders end face altogether.
Further, described the first semicircular cylinder and the 3rd semicircular cylinder are connected, and the second semicircular cylinder and the 4th semicircular cylinder are connected.
Further, described outer sleeve is consistent with the material of inner sleeve.
Further, also comprise a back-up ring, described back-up ring and worm gear are affixed.
Advantage and good effect that the present invention has are: adopt the technical program very reliably worm gear and transmission shaft firmly to be linked together, be not only easy to assembling, and improve shear-stable ability, improved intensity.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of transmission shaft;
Fig. 3 is the structural representation of worm gear;
The structural representation of Fig. 4 outer sleeve;
Fig. 5 is the A-A sectional view of outer sleeve in Fig. 4;
Fig. 6 is the structural representation of inner sleeve;
Fig. 7 is the B-B sectional view of inner sleeve in Fig. 6.
In figure:
1. transmission shaft 2. worm gear 3. outer sleeves
4. inner sleeve 5. back-up rings
11. first shaft part 12. second shaft part 13. the 3rd shaft parts
21. first center hole 22. second center holes
31. first semicircular cylinder 32. second semicircular cylinders
41. the 3rd semicircular cylinder 42. the 4th semicircular cylinders
Embodiment
The present invention is further elaborated to enumerate a specific embodiment below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of worm gearing, comprises transmission shaft 1 and worm gear 2, and transmission shaft 1 is multidiameter shaft, and worm gear 2 is provided with central shaft hole, and transmission shaft 1 is connected with worm gear 2, and transmission shaft 1 is affixed by a sleeve with worm gear 2.
As shown in Figure 2, transmission shaft 1 comprises the first shaft part 11, the second shaft part 12 and the 3rd shaft part 13, the first shaft part 11 and the second shaft part 12 are affixed, the second shaft part 12 and the 3rd shaft part 13 are affixed, coaxial line between the first shaft part 11, the second shaft part 12 and the 3rd shaft part 13, the first shaft part 11 diameters are less than the second shaft part 12 diameters, and the second shaft part 12 diameters are less than the 3rd shaft part 13 diameters.
As shown in Figure 3, the center, upper-end surface of worm gear 2 is provided with the first center hole 21, and the center, lower end surface of worm gear 2 is provided with the second center hole 22, the first center holes 21 and the second center hole 22 connects, and the aperture of the first center hole 21 is less than the aperture of the second center hole 22.
As Figure 4-Figure 7, sleeve comprises outer sleeve 3 and inner sleeve 4; Outer sleeve 3 is made up of two semicircular cylinders, is respectively the first semicircular cylinder 31 and the second semicircular cylinder 32, the first semicircular cylinders 31 and the second semicircular cylinder 32 coaxial lines, and the external diameter of two semicircular cylinders is equal, and the internal diameter of two semicircular cylinders is unequal; Inner sleeve 4 is made up of two semicircular cylinders, is respectively the 3rd semicircular cylinder 41 and the 4th semicircular cylinder 42, the three semicircular cylinders 41 and the 4th semicircular cylinder 42 coaxial lines, and the internal diameter of two semicircular cylinders is equal, and the external diameter of two semicircular cylinders is unequal; Inner sleeve 4 is sleeved in outer sleeve 3.
Between inner sleeve 4 and transmission shaft 1 second shaft part 12, it is interference fit; The outer peripheral surface of outer sleeve 3 is provided with a ring-shaped step; Between the second center hole 22 of outer sleeve 3 and worm gear 2, it is interference fit.
The upper-end surface of the first semicircular cylinder 31 and the second semicircular cylinder 32 is end face altogether, and the lower end surface of two semicircular cylinders end face altogether; The upper-end surface of the 3rd semicircular cylinder 41 and the 4th semicircular cylinder 42 is end face altogether, and the lower end surface of two semicircular cylinders end face altogether; The first semicircular cylinder 31 and the 3rd semicircular cylinder 41 are connected, and the second semicircular cylinder 32 and the 4th semicircular cylinder 42 are connected; Outer sleeve 3 is consistent with the material of inner sleeve 4.
When use, outer sleeve 3 is affixed with worm gear 2, inner sleeve 4 is affixed with transmission shaft 1, so just worm gear 2 and transmission shaft 1 are linked together, when both rotate together, because active force has acted on the surface of contact between outer sleeve 3 and inner sleeve 4, be connected and compare with bolt screw, area of contact is large, and the shearing force that can bear is large, works more reliable and more stable; Outer sleeve 1 is consistent with the material of inner sleeve 2, has ensured the dynamic balancing of connecting sleeve in rotation process, makes work more stable, safe and reliable.
Also comprise a back-up ring 5, back-up ring 5 is affixed with worm gear 2, has limited the axial relative movement between worm gear 2 and transmission shaft 1.
The working principle of the present embodiment: coordinating between outer sleeve 3 and worm gear 2 is interference fit, and both install together affixed; Coordinating between inner sleeve 4 and transmission shaft 1 is also interference fit, and both install and are also fixed together; Then outer sleeve 3 is connected with inner sleeve 4, in the time that transmission shaft 1 or worm gear 2 rotate, the active force producing between the two has just acted in plane in mating connection between outer sleeve 3 and inner sleeve 4, because the area of contact of two groups of planes is larger, overcome traditional bolt or screw and connected the weak shortcoming of shear resistance, have advantages of that anti-shear ability is strong, and make that whole transmission device is more reliable, stable, safety.
Above one embodiment of the present of invention are had been described in detail, but content is only preferred embodiment of the present invention, can not be considered to for limiting practical range of the present invention.All equalization variation and improvement etc. of doing according to the present patent application scope, within all should still belonging to patent covering scope of the present invention.
Claims (9)
1. a worm gearing, comprises transmission shaft and worm gear, and described transmission shaft is multidiameter shaft, and described worm gear is provided with central shaft hole, and described transmission shaft is connected with worm gear, it is characterized in that: described transmission shaft and worm gear are affixed by a sleeve;
Described transmission shaft comprises the first shaft part, the second shaft part and the 3rd shaft part, described the first shaft part and the second shaft part are affixed, the second shaft part and the 3rd shaft part are affixed, coaxial line between described the first shaft part, the second shaft part and the 3rd shaft part, described the first shaft section diameter is less than the second shaft section diameter, and the second shaft section diameter is less than the 3rd shaft section diameter;
The center, upper-end surface of described worm gear is provided with the first center hole, and the center, lower end surface of worm gear is provided with the second center hole, and described the first center hole and the second center hole connect, and the aperture of described the first center hole is less than the aperture of the second center hole;
Described sleeve comprises outer sleeve and inner sleeve; Described outer sleeve is made up of two semicircular cylinders, is respectively the first semicircular cylinder and the second semicircular cylinder, described the first semicircular cylinder and the second semicircular cylinder coaxial line, and the external diameter of two semicircular cylinders is equal, and the internal diameter of two semicircular cylinders is unequal; Described inner sleeve is made up of two semicircular cylinders, is respectively the 3rd semicircular cylinder and the 4th semicircular cylinder, described the 3rd semicircular cylinder and the 4th semicircular cylinder coaxial line, and the internal diameter of two semicircular cylinders is equal, and the external diameter of two semicircular cylinders is unequal; Described inner sleeve is sleeved in outer sleeve.
2. worm gearing according to claim 1, is characterized in that: between described inner sleeve and transmission shaft the second shaft part, be interference fit.
3. worm gearing according to claim 1, is characterized in that: the outer peripheral surface of described outer sleeve is provided with a ring-shaped step.
4. worm gearing according to claim 1, is characterized in that: between the second center hole of described outer sleeve and worm gear, be interference fit.
5. worm gearing according to claim 1, is characterized in that: the upper-end surface of described the first semicircular cylinder and the second semicircular cylinder is end face altogether, and the lower end surface of two semicircular cylinders end face altogether.
6. worm gearing according to claim 1, is characterized in that: the upper-end surface of described the 3rd semicircular cylinder and the 4th semicircular cylinder is end face altogether, and the lower end surface of two semicircular cylinders end face altogether.
7. worm gearing according to claim 1, is characterized in that: described the first semicircular cylinder and the 3rd semicircular cylinder are connected, and the second semicircular cylinder and the 4th semicircular cylinder are connected.
8. worm gearing according to claim 1, is characterized in that: described outer sleeve is consistent with the material of inner sleeve.
9. worm gearing according to claim 1, is characterized in that: also comprise a back-up ring, described back-up ring and worm gear are affixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210505297.8A CN103851094A (en) | 2012-11-29 | 2012-11-29 | Worm gear transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210505297.8A CN103851094A (en) | 2012-11-29 | 2012-11-29 | Worm gear transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103851094A true CN103851094A (en) | 2014-06-11 |
Family
ID=50859115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210505297.8A Pending CN103851094A (en) | 2012-11-29 | 2012-11-29 | Worm gear transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103851094A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525987A (en) * | 2014-09-30 | 2016-04-27 | 虞小鸣 | Integral worm wheel shaft |
-
2012
- 2012-11-29 CN CN201210505297.8A patent/CN103851094A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525987A (en) * | 2014-09-30 | 2016-04-27 | 虞小鸣 | Integral worm wheel shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140611 |