CN216589852U

CN216589852U - Gear shaft assembly

Info

Publication number: CN216589852U
Application number: CN202122422795.3U
Authority: CN
Inventors: 王挺; 潘雨松
Original assignee: Taizhou Wante Auto Parts Co ltd
Current assignee: Taizhou Wante Auto Parts Co ltd
Priority date: 2021-10-08
Filing date: 2021-10-08
Publication date: 2022-05-24
Anticipated expiration: 2031-10-08

Abstract

The utility model provides a gear shaft assembly, and belongs to the technical field of gear shafts. It has solved the single poor problem of connection stability that leads to of gear shaft assembly. The gear shaft assembly comprises a gear shaft main body and gear assemblies arranged on the gear shaft main body, wherein two end parts of the gear shaft main body are respectively provided with a first limiting unit for limiting the positions of the gear assemblies, each gear assembly comprises a first gear unit and a second gear unit, the first gear unit comprises a first gear sleeved on the gear shaft main body and in rotary fit with the first gear and a second gear sleeved on the first gear and in rotary fit with the second gear, and the second gear unit comprises a third gear and a fourth gear which are sleeved on the gear shaft main body and in rotary fit with the third gear. The utility model has the advantages of various assembling and good stability.

Description

Gear shaft assembly

Technical Field

The utility model belongs to the technical field of gear shafts, and relates to a gear shaft assembly.

Background

Gear shaft refers to a mechanical part that supports and rotates with a rotating part to transmit motion, torque, or bending moment. Typically in the form of a metal rod, each section may have a different diameter.

The traditional gear and the gear shaft are relatively single in assembly, the connection stability is poor, the coaxiality of the gear shaft and the gear is affected, the gear is abraded due to the fact that the gear teeth are meshed with each other in the using process, the service life of the gear structure is shortened, the gear structure is damaged seriously, the normal use of the gear structure is affected, and particularly when different gear structures are assembled on the same connecting shaft.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a gear shaft assembly which is good in stability, can ensure coaxiality and has a service life.

The purpose of the utility model can be realized by the following technical scheme: the utility model provides a gear shaft subassembly, includes the tooth axle main part and sets up the gear assembly in the tooth axle main part, its characterized in that, both ends department of tooth axle main part all be provided with the spacing unit one of restriction gear assembly position, the gear assembly constitute by gear unit one and gear unit two, gear unit one locate on the tooth axle main part and rather than rotation fit's gear one and the cover locates on the gear one and rather than rotation fit's gear two by the cover and constitute, gear unit two by all overlapping locate on the tooth axle main part and rather than rotation fit's gear three and gear four.

In foretell gear shaft subassembly, gear one through the rotary unit with the gear shaft main part looks normal running fit, the rotary unit constitute by column shell, a plurality of roller, adapter sleeve, the column shell cover locate on the gear shaft main part, set up the installation notch that a plurality of supplied roller embedding installation on this column shell, and this column shell makes and leaves the space between its interior perisporium and the gear shaft main part periphery wall through a plurality of roller, the adapter sleeve locate on the column shell to through the roller with adapter sleeve looks normal running fit.

In the above gear shaft assembly, the connecting sleeves are provided with the hems at the two ends for limiting the position of the cylindrical shell, and a gap is reserved between the inner peripheral wall of each hem and the outer peripheral wall of the corresponding gear shaft main body.

In foretell gear shaft subassembly, the right-hand member face of gear one on be provided with the axial and to the extension bellying that second gear of extension just supplied second gear installation, should extend the bellying and be the setting of second grade ladder structure, extension bellying and gear two between be provided with the slew bearing one that is convenient for second gear rotation, second gear be located and be provided with the radial inside bellied bulge portion on the internal perisporium of this slew bearing one right side department, bulge portion through the position of this slew bearing one of cooperation restriction with above-mentioned bellying.

In foretell gear shaft subassembly, the gear shaft main part be located and be provided with the spacing unit two rather than linking firmly mutually on the periphery wall of two right sides departments of gear, spacing unit two constitute by stop collar one and spacing ring, and the length of stop collar one is less than the length of spacing ring, the stop collar one set locate the gear shaft main part on, and link firmly mutually through the round pin axle with it, the spacing ring form by the semi-ring concatenation combination that two symmetries set up, two all be provided with rather than linking firmly and being used for limiting the spacing protruding one of a position of stop collar mutually on the internal perisporium of semi-ring, the both ends of stop collar one all be provided with the outside protruding extension that just contradicts with gear three and adapter sleeve respectively of axial.

In foretell gear shaft subassembly, three gears and four gears all through swivel bearing two with the gear shaft main part is normal running fit mutually, three gears and four gears between be provided with the cover and locate the stop collar two in the gear shaft main part, the periphery wall of stop collar two on be provided with a plurality of and link firmly rather than mutually, and follow its circumferencial direction interval distribution to respectively with two inconsistent spacing protruding strips of corresponding swivel bearing, three gears and four gear's internal perisporium on all be provided with spacing protruding two of two positions of corresponding swivel bearing, two spacing protruding two all is used for limiting three gears and four gear's position respectively through the cooperation with spacing protruding strip.

In foretell gear shaft subassembly, spacing unit one constitute by swivel bearing three, conflict ring sum rand, swivel bearing three sets locate the outer end of corresponding tooth axle main part, conflict ring sum rand set up respectively in swivel bearing three both sides to all rather than inconsistent, tooth axle main part be located the periphery wall of both ends department and all offer the ring channel that supplies corresponding rand embedding installation and be used for restricting three positions of corresponding swivel bearing.

Compared with the prior art, this gear shaft subassembly has following advantage:

1. the first gear is arranged on the gear shaft main body through the rotating unit, the second gear is arranged on the first gear through the rotating bearing, the third gear and the fourth gear are arranged on the gear shaft main body through the rotating bearing and are provided with the limiting sleeve between the third gear and the fourth gear, the structure enables the assembling modes of the three gears to be various, stability of the three gears after assembly is guaranteed, coaxiality of the multiple gears after assembly is guaranteed simultaneously, and the service life of the three gears is prolonged.

Drawings

FIG. 1 is a cross-sectional structural schematic view of the present gear shaft assembly.

Fig. 2 is a schematic perspective view of a second limiting unit in the gear shaft assembly.

In the figure, 1, a gear shaft main body; 2. a first gear; 3. a second gear; 4. a third gear; 5. a fourth gear; 6. a column shell; 7. a roller; 8. connecting sleeves; 9. installing a notch; 10. folding edges; 11. an extending boss; 12. a first rotating bearing; 13. a convex ring part; 14. a first limiting sleeve; 15. a limiting ring; 16. a pin shaft; 17. a first limiting bulge; 18. an expansion section; 19. a second rotating bearing; 20. a second limiting sleeve; 21. limiting convex strips; 22. a third rotating bearing; 23. a contact ring; 24. a collar; 25. an annular groove.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the gear shaft assembly comprises a gear shaft main body 1 and a gear assembly arranged on the gear shaft main body 1, wherein two end parts of the gear shaft main body 1 are respectively provided with a first limiting unit for limiting the position of the gear assembly, the gear assembly comprises a first gear unit and a second gear unit, the first gear unit comprises a first gear 2 which is sleeved on the gear shaft main body 1 and is in rotary fit with the gear main body, and a second gear 3 which is sleeved on the first gear 2 and is in rotary fit with the gear, the second gear unit comprises a third gear 4 and a fourth gear 5 which are sleeved on the gear shaft main body 1 and are in rotary fit with the gear main body 1, the first gear 2 is in rotary fit with the gear shaft main body 1 through a rotary unit, the rotary unit comprises a column shell 6, a plurality of rollers 7 and a connecting sleeve 8, the column shell 6 is sleeved on the gear shaft main body 1, the column shell 6 is provided with a plurality of mounting notches 9 for the rollers 7 to be embedded in, and the column casing 6 makes a gap between the inner peripheral wall thereof and the outer peripheral wall of the gear shaft main body 1 through a plurality of roller rollers 7, the connecting sleeve 8 is sleeved on the column casing 6, the inner peripheral wall of the connecting sleeve 8 is abutted against the corresponding roller rollers 7 and is in rotary fit with the connecting sleeve 8 through the roller rollers 7, the gear three 4 and the gear four 5 are in rotary fit with the gear shaft main body 1 through a rotary bearing two 19, the rotary bearing two 19 at the gear three 4 is abutted against the expanding part 18, a limit sleeve two 20 sleeved on the gear shaft main body 1 is arranged between the gear three 4 and the gear four 5, the outer peripheral wall of the limit sleeve two 20 is provided with a plurality of limit bulges 21 which are fixedly connected with the limit sleeve and are distributed at intervals along the circumferential direction and are respectively abutted against the corresponding rotary bearing two 19, the inner peripheral walls of the gear three 4 and the gear four 5 are provided with limit bulges two for limiting the position of the corresponding rotary bearing two 19, two spacing protruding two are all used for limiting gear three 4 and gear four 5's position respectively through the cooperation with spacing protruding strip 21, and spacing unit is first to constitute by swivel bearing three 22, conflict ring 23 and rand 24, and the outer end of corresponding tooth axle main part 1 is located to swivel bearing three 22 cover, conflict ring 23 and rand 24 set up respectively in swivel bearing three 22's both sides to all contradict rather than, tooth axle main part 1 is located all to offer on the periphery wall of both ends department and supplies corresponding rand 24 embedding installation and be used for limiting the ring channel 25 of corresponding swivel bearing three 22 position, and above-mentioned conflict ring 23 is inconsistent with swivel bearing two 19 and adapter sleeve 8 respectively through the cooperation of corresponding swivel bearing three 22 and rand 24.

To put it more concretely, in order to prevent the column casing 6 from separating from the connecting sleeve 8, the connecting sleeve 8 is provided with flanges 10 at both ends for limiting the position of the column casing 6, and a gap is left between the inner peripheral wall of the flange 10 and the outer peripheral wall of the corresponding gear shaft main body 1.

In a further elaboration, in order to facilitate the installation of the second gear 3 and limit the second gear 3, an extending protrusion 11 which extends axially towards the second gear 3 and is used for installing the second gear 3 is arranged on the right end face of the first gear 2, the length of the first gear 2 is made to be the same as that of the column shell 6, the extending protrusion 11 is arranged in a two-stage stepped structure, a first rotary bearing 12 which facilitates the rotation of the second gear 3 is arranged between the extending protrusion 11 and the second gear 3, a radially inward protruding collar part 13 is arranged on the inner peripheral wall of the second gear 3 on the right side of the first rotary bearing 12, and the collar part 13 limits the position of the first rotary bearing 12 through the matching with the protrusion 11.

In more detail, for better limiting, a second limiting unit fixedly connected with the second limiting unit is arranged on the outer peripheral wall of the gear main body 1 at the right side of the second gear 3, the second limiting unit limits the position of the rotating unit through the matching with the first limiting unit, the second limiting unit limits the position of the second gear 3 through the matching with the first gear 2, the second limiting unit consists of a first limiting sleeve 14 and a limiting ring 15, the length of the first limiting sleeve 14 is smaller than that of the limiting ring 15, the first limiting sleeve 14 is sleeved on the gear main body 1 and fixedly connected with the gear main body through a pin shaft 16, the pin shaft 16 penetrates through the gear main body 1, both ends of the pin shaft 16 extend out of the gear main body 1, a pin hole for the pin shaft 16 to penetrate through is formed in the first limiting sleeve 14, the limiting ring 15 is formed by splicing and combining two half rings symmetrically arranged, and the two half rings are fixedly connected through a stud and a nut, the two semi-rings are all provided with assembly grooves with threaded holes, the inner peripheral walls of the two semi-rings are provided with two first limiting bulges 17 which are fixedly connected with the semi-rings and used for limiting the positions of a first limiting sleeve 14, two ends of the first limiting sleeve 14 are provided with expansion parts 18 which are axially outwards protruded and respectively abut against a third gear 4 and a connecting sleeve 8, and the right end face of a second gear 3 is provided with a right end face which is axially extended towards a limiting ring 15 and extended to the limiting ring 15.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims

1. The utility model provides a gear shaft subassembly, includes gear shaft main part (1) and sets up the gear assembly on gear shaft main part (1), its characterized in that, the both ends department of gear shaft main part (1) all be provided with the spacing unit one of restriction gear assembly position, the gear assembly constitute by gear unit one and gear unit two, gear unit one locate gear shaft main part (1) by the cover and rather than rotary fit's gear one (2) and the cover locate on gear one (2) and rather than rotary fit's gear two (3) and constitute, gear unit two by all the cover locate gear shaft main part (1) on and rather than rotary fit's gear three (4) and gear four (5) constitute.

2. A gear shaft assembly according to claim 1, wherein said first gear (2) is rotatably engaged with said gear shaft body (1) via a rotary unit, said rotary unit is composed of a cylindrical shell (6), a plurality of rollers (7) and a connecting sleeve (8), said cylindrical shell (6) is sleeved on said gear shaft body (1), said cylindrical shell (6) is provided with a plurality of mounting notches (9) for said rollers (7) to be inserted and mounted, said cylindrical shell (6) has a gap between its inner peripheral wall and the outer peripheral wall of said gear shaft body (1) via said plurality of rollers (7), said connecting sleeve (8) is sleeved on said cylindrical shell (6) and rotatably engaged with said connecting sleeve (8) via said rollers (7).

3. A gear shaft assembly according to claim 2, characterized in that the connecting sleeves (8) are provided at both ends with flanges (10) for limiting the position of the cylindrical shell (6), and a gap is left between the inner peripheral wall of the flange (10) and the outer peripheral wall of the corresponding gear shaft body (1).

4. A gear shaft assembly according to claim 1, wherein the right end face of the first gear (2) is provided with an extending protrusion (11) which extends axially towards the second gear (3) and is used for mounting the second gear (3), the extending protrusion (11) is arranged in a two-stage stepped structure, a first rotary bearing (12) which is convenient for the second gear (3) to rotate is arranged between the extending protrusion (11) and the second gear (3), the inner peripheral wall of the second gear (3) at the right side of the first rotary bearing (12) is provided with a radially inward protruding convex ring part (13), and the convex ring part (13) is matched with the protrusion (11) to limit the position of the first rotary bearing (12).

5. A gear shaft assembly according to claim 1, wherein a second limit unit is fixedly connected to the outer peripheral wall of the gear shaft main body (1) at the right side of the second gear (3), the second limit unit consists of a first limit sleeve (14) and a limit ring (15), the length of the first limit sleeve (14) is less than that of the limit ring (15), the first limit sleeve (14) is sleeved on the gear shaft main body (1), and is fixedly connected with the limiting sleeve I through a pin shaft (16), the limiting ring (15) is formed by splicing and combining two symmetrically arranged half rings, the inner peripheral walls of the two half rings are respectively provided with a first limiting bulge (17) which is fixedly connected with the half rings and is used for limiting the position of a first limiting sleeve (14), and the two ends of the first limiting sleeve (14) are provided with expansion parts (18) which axially protrude outwards and are respectively abutted against the third gear (4) and the connecting sleeve (8).

6. A gear shaft assembly according to claim 1, characterized in that said gear three (4) and gear four (5) are each rotationally engaged with said gear shaft body (1) through a rotational bearing two (19), a second limit sleeve (20) sleeved on the gear shaft main body (1) is arranged between the third gear (4) and the fourth gear (5), a plurality of limiting sleeves (20) are fixedly connected with the outer peripheral wall of the second limiting sleeve and are distributed at intervals along the circumferential direction of the second limiting sleeve, and limit convex strips (21) which are respectively abutted against the corresponding second rotating bearings (19), the inner peripheral walls of the third gear (4) and the fourth gear (5) are provided with two limiting bulges for limiting the positions of the second rotary bearing (19), and the two limiting bulges are respectively used for limiting the positions of the third gear (4) and the fourth gear (5) through matching with the limiting bulge strips (21).

7. The gear shaft assembly according to claim 1, wherein each limiting unit comprises a third rotating bearing (22), a contact ring (23) and a retainer ring (24), the third rotating bearing (22) is sleeved at the outer end of the corresponding gear shaft main body (1), the contact ring (23) and the retainer ring (24) are respectively arranged at two sides of the third rotating bearing (22) and are respectively contacted with the third rotating bearing (22), and annular grooves (25) for embedding and mounting the corresponding retainer rings (24) and limiting the positions of the third rotating bearings (22) are formed in the outer peripheral walls of the two end portions of the gear shaft main body (1).