CN218207686U

CN218207686U - Driving fan gear shaft

Info

Publication number: CN218207686U
Application number: CN202222638294.3U
Authority: CN
Inventors: 郑立荣
Original assignee: Zhejiang Huanye Machinery Co ltd
Current assignee: Zhejiang Huanye Machinery Co ltd
Priority date: 2022-10-08
Filing date: 2022-10-08
Publication date: 2023-01-03
Anticipated expiration: 2032-10-08

Abstract

The utility model provides a drive fan gear shaft belongs to mechanical technical field. It has solved the problem of current sector tooth weight. The driving fan-shaped gear shaft comprises a central shaft and fan-shaped gears formed at the lower end of the central shaft, the central axes of the fan-shaped gears and the central shaft are collinear, each fan-shaped gear comprises gear teeth formed on the outer peripheral surface and two side walls which are axially distributed, each side wall is provided with two long strip-shaped weight reducing grooves, the length of each weight reducing groove extends along the radial direction of the fan-shaped gear, and the two ends of each weight reducing groove are respectively close to the central shaft and the gear teeth; two weight reduction grooves on the same side wall are distributed along the circumferential direction of the sector gear; all the shaping has the rib on the diapire of every subtracts heavy groove, and the rib is convex and coaxial with the center pin, and the rib both ends extend to respectively and subtract heavy inslot lateral wall correspondingly. The driving fan gear shaft is light.

Description

Driving fan gear shaft

Technical Field

The utility model belongs to the technical field of machinery, a fan pinion is related to, especially a drive fan pinion.

Background

Sector gears are a type of gear that is known for its sector shape.

The existing sector gear, such as the sector gear (application number: 201720151446.3) disclosed in the chinese patent library, includes a 90 ° gear body, helical teeth are provided on an outer surface of the gear body, a groove is provided on an inner surface of the gear body, two bolt holes are provided in the groove, and an end of the gear body is a quarter of the circular hole.

Above-mentioned sector gear realizes losing weight the purpose through seting up the recess in gear body one side, but considers gear bulk strength, in the actual product, sets up its area of single recess and can not be very big, leads to losing weight the effect unsatisfactory.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided a drive fan pinion, the technical problem of solution is how under the prerequisite of ensureing intensity, reduces weight.

The purpose of the utility model can be realized by the following technical proposal: a kind of driving fan-shaped gear shaft, including the central axis and forming in the fan-shaped gear of the lower end of central axis, and the central axis of both fan-shaped gears and central axis are collinear, the fan-shaped gear includes the tooth formed on the peripheral surface and presents the both sides wall distributed axially, characterized by that, each above-mentioned side wall has been offered two and presented long-strip-shaped lightening grooves, lighten the length of the groove and extend along the radial direction of fan-shaped gear, and lighten the groove both ends and is close to central axis and tooth to set up separately; two weight reduction grooves on the same side wall are distributed along the circumferential direction of the sector gear; all the shaping has the rib on the diapire of every subtracts heavy groove, and the rib is convex and coaxial with the center pin, and the rib both ends extend to respectively and subtract heavy inslot lateral wall correspondingly.

Two strip-shaped weight reducing grooves which are distributed circumferentially are arranged on two side walls of the fan tooth shaft, and two ends of each weight reducing groove are arranged close to the central shaft and the corresponding tooth respectively, so that during actual design, most of the two side walls of the fan tooth shaft can be hollowed out, and the weight of the driving fan tooth shaft is effectively reduced.

Meanwhile, the arc-shaped ribs are arranged on the bottom wall of the weight reducing groove, and two ends of each rib extend to the inner wall of the weight reducing groove and are used for radially supporting the weight reducing groove to prevent collapse, so that the radial pressure resistance of the driving fan gear shaft can be effectively enhanced, and the structural stability and the transmission precision are guaranteed.

In the driving fan gear shaft, a plurality of ribs are arranged in each weight reduction groove, and the plurality of ribs in the same weight reduction groove are uniformly distributed along the length direction of the weight reduction groove, so that the radial pressure resistance of the driving fan gear shaft is greatly enhanced on the premise of slightly increasing the weight.

In the driving fan-tooth shaft, on the same side wall, the number of the ribs in the two lightening grooves is the same, the positions of the ribs are in one-to-one correspondence, and the two ribs in the corresponding positions are arranged on the same circumference. Two ribs corresponding to the positions are distributed along the rotation direction of the fan-shaped toothed shaft, so that the compression-resistant structure is more concentrated to strengthen the compression-resistant performance, and the structural stability of the fan-shaped toothed shaft is further strengthened.

In the driving sector gear shaft, the middle part of the sector gear is axially provided with a lightening hole in a penetrating way, the lightening hole is positioned between two lightening grooves on the same side wall, and the lightening hole is in a long strip shape and extends along the radial direction of the sector gear in length so as to further lighten the weight of the sector gear shaft.

In the above-mentioned driving fan-tooth shaft, the lightening hole is in the shape of a circular arc.

In the driving sector gear shaft, a correction hole axially penetrates through the sector gear, the correction hole is conical and is positioned between the central shaft and the lightening hole, and the correction hole and the central shaft are arranged in parallel along the radial direction of the sector gear. During assembly, the correcting rod penetrates through the correcting hole, and the two conical surfaces are matched and used for correcting the position of the sector gear, so that the transmission precision is improved; when the sector gear shaft runs, the correcting rod exits from the correcting hole.

In the driving fan-tooth shaft, the fan-tooth and the central shaft are of an integrated structure and are formed in a forging mode, so that the strength of the fan-tooth shaft is further ensured.

Compared with the prior art, the driving fan gear shaft has the following advantages:

1. two strip-shaped weight reducing grooves which are distributed circumferentially are arranged on two side walls of the fan tooth shaft, and two ends of each weight reducing groove are arranged close to the central shaft and the corresponding tooth respectively, so that during actual design, most of the two side walls of the fan tooth shaft can be hollowed out, and the weight of the driving fan tooth shaft is effectively reduced.

2. And arc-shaped ribs are arranged on the bottom wall of the lightening groove, and two ends of each rib extend to the inner wall of the lightening groove and are used for radially supporting the lightening groove to prevent collapse, so that the radial pressure resistance of the driving fan gear shaft can be effectively enhanced, and the structural stability and the transmission precision are guaranteed.

3. On the same side wall, the number of the ribs in the two lightening grooves is the same, the positions of the ribs correspond to one another, and the two ribs corresponding to the positions are arranged on the same circumference. The two ribs corresponding to the positions are distributed along the rotation direction of the fan-shaped gear shaft, so that the compression-resistant structure is more concentrated to enhance the compression-resistant performance, and the structural stability of the fan-shaped gear shaft is further enhanced.

Drawings

Fig. 1 is a perspective view of a driving fan gear shaft.

Fig. 2 is a schematic top view of the driving fan gear shaft.

Fig. 3 is a sectional structure diagram of the driving fan gear shaft.

In the figure, 1, central axis; 2. sector gear; 2a, teeth; 2b, a side wall; 2c, a weight reduction groove; 2d, ribs; 2e, lightening holes; 2f, correcting the hole.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, the driving sector gear shaft includes a central shaft 1 and sector gears 2 formed at the lower end of the central shaft 1, and the central shafts 1 of the sector gears 2 and the central shaft 1 are collinear. In an actual product, the sector gear 2 and the central shaft 1 are of an integrated structure and are formed in a forging mode, so that the integral strength of the sector gear 2 shaft is ensured.

In particular, the present invention relates to a method for producing,

as shown in fig. 1 and fig. 3, the sector gear 2 includes teeth 2a formed on an outer circumferential surface and two side walls 2b distributed in an axial direction, wherein each side wall 2b is provided with two weight-reducing grooves 2c each having a long strip shape, the length of each weight-reducing groove 2c extends along a radial direction of the sector gear 2, and two ends of each weight-reducing groove 2c are respectively disposed near the central shaft 1 and the teeth 2 a. Two weight-reducing grooves 2c on the same side wall 2b are distributed along the circumferential direction of the sector teeth 2; all the shaping has the rib 2d on the diapire of every subtracts heavy groove 2c, and the rib 2d is convex and coaxial with center pin 1, and the rib 2d both ends extend to respectively and subtract heavy groove 2c inside wall 2b.

Two strip-shaped weight reducing grooves 2c distributed circumferentially are formed in two axial side walls 2b of the sector teeth 2, and two ends of each weight reducing groove 2c are arranged close to the central shaft 1 and the tooth 2a respectively, so that during actual design, most positions of the two side walls 2b of the sector teeth 2 can be hollowed out, and the weight of the driving sector teeth 2 is effectively reduced. Meanwhile, the arc-shaped ribs 2d are arranged on the bottom wall of the weight reducing groove 2c, and two ends of each rib 2d extend to the inner wall of the weight reducing groove 2c and are used for radially supporting the weight reducing groove 2c to prevent collapse, so that the axial radial pressure resistance of the driving sector gear 2 can be effectively enhanced, and the structural stability and the transmission precision are guaranteed.

Preferably, a plurality of ribs 2d are arranged in each weight reducing groove 2c, and the plurality of ribs 2d in the same weight reducing groove 2c are uniformly distributed along the length direction of the weight reducing groove 2c, so that the radial pressure resistance of the driving sector gear 2 shaft is greatly enhanced on the premise of slightly increasing the weight. In an actual product, three of the ribs 2d are arranged in each weight-reducing groove 2 c.

Further, as shown in fig. 2, on the same sidewall 2b, the number of the ribs 2d in the two lightening grooves 2c is the same, and the positions of the ribs are in one-to-one correspondence, and the two ribs 2d corresponding to the positions are arranged on the same circumference. Two ribs 2d corresponding in position are distributed along the 2-axis rotation direction of the sector gear, so that the compression-resistant structure is more concentrated to enhance the compression-resistant performance, and the structural stability of the 2-axis sector gear is further enhanced.

As shown in fig. 1 and 2, a lightening hole 2e is axially arranged in the middle of the sector gear 2 in a penetrating manner, the lightening hole 2e is located between two lightening grooves 2c on the same side wall 2b, and the lightening hole 2e is in a long strip shape and has a length extending along the radial direction of the sector gear 2, so as to further lighten the axial weight of the sector gear 2. The lightening holes 2e are preferably circular arc-shaped. The sector gear 2 is also provided with a correction hole 2f axially penetrating, the correction hole 2f is conical and is positioned between the central shaft 1 and the lightening hole 2e, and the correction hole 2f and the central shaft 1 are arranged in parallel along the radial direction of the sector gear 2. During assembly, the correcting rod penetrates through the correcting hole 2f and is in conical surface fit with the correcting hole 2f to correct the position of the sector gear 2 and improve transmission precision; when the sector gear 2 shaft runs, the correction rod exits the correction hole 2f.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A driving sector gear shaft comprises a central shaft (1) and sector gears (2) formed at the lower end of the central shaft (1), the central axes of the sector gears (2) and the central shaft (1) are collinear, each sector gear (2) comprises a tooth (2 a) formed on the outer peripheral surface and two side walls (2 b) distributed axially, and the driving sector gear shaft is characterized in that each side wall (2 b) is provided with two strip-shaped weight reducing grooves (2 c), the length of each weight reducing groove (2 c) extends along the radial direction of each sector gear (2), and the two ends of each weight reducing groove (2 c) are respectively close to the central shaft (1) and the tooth (2 a); two weight-reducing grooves (2 c) on the same side wall (2 b) are distributed along the circumferential direction of the sector teeth (2); all shaping has rib (2 d) on the diapire of every subtracts heavy groove (2 c), and rib (2 d) are arc and coaxial with center pin (1), and rib (2 d) both ends extend to respectively and subtract heavy groove (2 c) inside wall (2 b) correspondingly.

2. The driving fan gear shaft according to claim 1, wherein a plurality of ribs (2 d) are arranged in each weight-reducing groove (2 c), and the plurality of ribs (2 d) in the same weight-reducing groove (2 c) are uniformly distributed along the length direction of the weight-reducing groove (2 c).

3. The driving sector shaft according to claim 2, characterised in that on the same side wall (2 b), the ribs (2 d) in the two lightening slots (2 c) are equal in number and in one-to-one correspondence in position, the two ribs (2 d) in correspondence in position being arranged on the same circumference.

4. A driving scalloped shaft according to claim 1, characterized in that a lightening hole (2 e) is provided axially through the middle of the scallops (2), the lightening hole (2 e) being located between two lightening grooves (2 c) on the same side wall (2 b), the lightening hole (2 e) being elongated and extending in length in the radial direction of the scallops (2).

5. The driving sector shaft according to claim 4, characterised in that the lightening holes (2 e) are circular arc shaped.

6. A driving scalloped shaft according to claim 4 or 5, characterized in that the scallops (2) are further provided with aligning holes (2 f) extending axially therethrough, the aligning holes (2 f) are conical and are located between the central shaft (1) and the lightening holes (2 e), and the aligning holes (2 f) and the central shaft (1) are arranged in parallel in the radial direction of the scallops (2).

7. The driving scalloped shaft according to claim 1, wherein the scallops (2) and the central shaft (1) are of one-piece construction and are formed by forging.