CN210423594U

CN210423594U - Helical gear assembly

Info

Publication number: CN210423594U
Application number: CN201921382252.XU
Authority: CN
Inventors: 钱汉生; 张辉
Original assignee: Kunshan Sany Power Co ltd
Current assignee: Kunshan Sany Power Co ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-04-28
Anticipated expiration: 2029-08-23

Abstract

The utility model provides a helical gear subassembly, include: a gear shaft; the bevel gear is rotatably sleeved on the outer side of the gear shaft and can rotate around the gear shaft in the meshing process; the magnetic part is used for generating magnetic force to the helical gear; when the helical gear rotates around the gear shaft, the magnetic force generated by the magnetic part to the helical gear partially offsets the axial force applied to the helical gear. Through the technical scheme of the utility model, can offset the partial or whole axial force that the helical gear received at rotatory in-process, effectively reduce the helical gear and take place the possibility of wearing and tearing and axial float, be favorable to prolonging the life of helical gear subassembly, reduce use cost, reducible noise simultaneously.

Description

Helical gear assembly

Technical Field

The utility model relates to a gear technical field particularly, relates to a helical gear subassembly.

Background

The gear system is often used in the transmission system of mechanical equipment such as engine, the working noise of engine comes from the gear system at present, in order to reduce gear meshing noise, gear system generally adopts helical gear, compare with straight gear, helical gear has meshing performance good, the transmission is steady, and the noise is little, overlap ratio is big, bearing capacity advantage such as strong, but helical gear is at the meshing rotation in-process, the interact produces axial force between the helical gear of intermeshing, receive the influence of this axial force, lead to helical gear and organism faying face wearing and tearing, can cause helical gear axial float when serious, can further accelerate the wearing and tearing of helical gear simultaneously, produce great noise.

SUMMERY OF THE UTILITY MODEL

The present invention aims at least solving one of the technical problems existing in the prior art or the related art.

Therefore, the utility model aims at providing a helical gear subassembly.

In order to achieve the above object, the present invention provides a helical gear assembly, including: a gear shaft; the bevel gear is rotatably sleeved on the outer side of the gear shaft and can rotate around the gear shaft in the meshing process; the magnetic part is used for generating magnetic force to the helical gear; when the helical gear rotates around the gear shaft, the magnetic force generated by the magnetic part to the helical gear partially offsets the axial force applied to the helical gear.

According to the utility model discloses a helical gear subassembly, through being equipped with the helical gear in the outside of gear shaft and cover location, make the gear shaft as the center of rotation of helical gear, through the removal of gear shaft restriction helical gear along radial direction simultaneously, the helical gear can be rotatory around the gear shaft at the meshing in-process to the realization is through helical gear meshing transmission power. Through being equipped with magnetic part to when helical gear rotated around the gear shaft, magnetic part produced magnetic force effect to the helical gear, and the axial force direction that magnetic force and helical gear received is opposite, in order to offset some or all axial force that the helical gear received. It can be understood that the helical gear generates axial force due to the tooth form inclination in the meshing transmission process, the wear of the end face of the helical gear can be accelerated under the action of the axial force of the helical gear for a long time, the helical gear can axially shift in severe cases, and large noise is generated. The magnetic force of the magnetic part can offset the axial force applied to the bevel gear, reduce the possibility of abrasion or axial movement of the bevel gear, improve the stability of the bevel gear in the transmission process, reduce the failure rate and the use cost, and effectively reduce the noise.

The fixed connection mode of the magnetic part and the gear shaft comprises but is not limited to riveting, clamping, threaded connection and interference fit.

It is emphasized that the direction of the axial force exerted on the helical gear is related to the rotational direction of the helical gear, the rotational direction around the gear shaft and whether the helical gear is actively rotating. It will be appreciated that the intermeshing helical gears are oppositely handed, i.e. one is a left hand helical gear and the other is a right hand helical gear.

Additionally, the utility model provides an among the above-mentioned technical scheme helical gear subassembly can also have following additional technical characterstic:

in the above technical solution, the magnetic member includes a first magnetic member disposed at one end of the gear shaft, and a magnetic attraction force generated by the first magnetic member to the helical gear partially counteracts an axial force applied to the helical gear.

In the technical scheme, the first magnetic part is arranged at one end of the gear shaft, the first magnetic part generates magnetic force opposite to the axial force applied to the bevel gear, partial or all axial force applied to the bevel gear can be offset, the possibility that the bevel gear generates abrasion or axial movement under the action of the axial force is reduced, the stability of the bevel gear in the transmission process is improved, the failure rate and the use cost are reduced, and the noise is reduced. It is emphasized that the helical gear may be made of any material having magnetic permeability.

In the above technical solution, the magnetic member includes a second magnetic member and a third magnetic member, one of the second magnetic member and the third magnetic member is disposed on the helical gear, the opposite surface magnetic poles of the second magnetic member and the third magnetic member are the same, and the axial force applied to the helical gear is partially offset by a repulsive force generated by the helical gear of the second magnetic member and the third magnetic member.

In the technical scheme, the second magnetic part and the third magnetic part are arranged, one of the second magnetic part and the third magnetic part is arranged on the helical gear, and the polarities of the magnetic poles of the second magnetic part and the third magnetic part are the same, so that a mutual repulsive magnetic force is generated between the second magnetic part and the third magnetic part, partial or all axial forces borne by the helical gear are counteracted, the possibility of abrasion or axial play of the helical gear in a transmission process is reduced, the stability in the transmission process of the helical gear is improved, and noise is reduced. The helical gear can be made of materials with magnetic conductivity or materials without magnetic conductivity, the material selection range of the helical gear is wider, and the applicability of the helical gear component is wider.

In the above technical solution, a gap exists between an end surface of the first magnetic member on a side close to the helical gear and an end surface of the helical gear on a side close to the first magnetic member.

In the technical scheme, a gap exists between the end face of one side, close to the helical gear, of the first magnetic part and the end face of one side, close to the first magnetic part, of the helical gear, the size of the magnetic force generated by the first magnetic part to the helical gear is in negative correlation with the size of the gap, and the size of the magnetic force generated by the first magnetic part to the helical gear can be adjusted by selecting a proper gap size in a machining link so as to offset partial or all axial force borne by the helical gear, so that the abrasion and the axial play of the helical gear are reduced through the first magnetic part. In addition, a gap exists between the end face of the first magnetic part close to the helical gear and the end face of the helical gear close to the first magnetic part, so that the contact acting force of the first magnetic part and the helical gear is prevented from generating contact acting force on the helical gear, and the influence on the efficacy of the magnetic force action is prevented.

In the above technical solution, the gap is 0.1 mm to 5 mm.

In the technical scheme, the gap between the end face of the first magnetic part close to one side of the helical gear and the end face of the helical gear close to one side of the first magnetic part is limited to be 0.1 mm to 5 mm, so that the magnetic force generated by the first magnetic part to the helical gear can offset part or all of the axial force borne by the helical gear, wherein the magnetic force generated by the first magnetic part to the helical gear is reduced along with the increase of the gap, and therefore the magnetic force generated by the first magnetic part to the helical gear is close to the axial force borne by the helical gear by processing the corresponding gap according to the difference of the damaged axial force of the helical gear, and the influence of the axial force to the helical gear is reduced to the maximum extent.

Furthermore, the selection range of the size of the gap is 0.3 mm to 3 mm, so that the size difference between the magnetic force generated by the first magnetic part to the helical gear and the axial force borne by the helical gear can be reduced.

Furthermore, the selection range of the size of the gap is 0.5 mm to 1.5 mm, which can prevent the first magnetic part from interfering the rotation of the helical gear or generating reverse acting force on the helical gear due to too small gap, and can prevent the first magnetic part from acting on the helical gear due to too small magnetic force due to too large gap, thereby ensuring that the magnetic force generated by the first magnetic part on the helical gear is close to the axial force received by the helical gear so as to further reduce the possibility of abrasion or axial movement of the helical gear in the transmission process, further improving the stability of the helical gear in the transmission process and reducing noise.

In the above technical solution, the first magnetic member is in threaded fit with the gear shaft, and the size of the gap is adjusted by screwing or unscrewing the first magnetic member on the gear shaft.

In the technical scheme, by arranging the thread matching between the first magnetic part and the gear shaft, specifically, a thread hole along the axial direction can be arranged on the first magnetic part, and an external thread matched with the thread hole is arranged on the outer side wall of the gear shaft, so that the first magnetic part can be screwed in or out along the axial direction of the gear shaft, and further, the size of the gap between the first magnetic part and the helical gear is changed through the axial displacement of the first magnetic part, so as to realize the adjustment of the gap, thereby, after the helical gear assembly is assembled, according to the size of the axial force applied to the helical gear in practical use, the size of the gap can be directly adjusted through adjusting the axial displacement of the magnetic part, and further, the size of the magnetic force is adjusted, so that the magnetic force is matched with the size of the axial force applied to the helical gear, specifically, when the axial force applied to the helical gear is larger, the gap can be correspondingly, so that the magnetic force that first magnetic part produced increases correspondingly, when the axial force that the helical gear receives is less, can increase the clearance correspondingly to the magnetic force that first magnetic part produced reduces correspondingly, thereby further reduces the influence of axial force to the helical gear, has strengthened the suitability of helical gear subassembly simultaneously. It can be understood that, if the first magnetic member is fixedly connected with the gear shaft, the size of the gap between the first magnetic member and the helical gear is kept unchanged after the helical gear assembly is assembled, which is not beneficial to adjusting the magnetic force of the first magnetic member.

In the above technical solution, the magnetic member includes: the gear shaft is used as a center of the circular magnetic belt, and the inner diameter of the circular magnetic belt is larger than or equal to the outer diameter of the gear shaft.

In the technical scheme, the circular magnetic belt taking the gear shaft as the center can ensure that the magnetic force generated by the circular magnetic belt to the helical gear is uniform and stable, reduce the radial bending moment generated to the helical gear and prevent the radial abrasion of the helical gear; the inner diameter of the circular magnetic belt is larger than or equal to the outer diameter of the gear shaft, so that the axial component force of the magnetic force generated by the circular magnetic belt to the helical gear can be increased, the radial component force can be reduced, the effect of the magnetic force action of the magnetic part to the helical gear can be increased, the weight of the magnetic part can be reduced under the condition of not changing the size of the magnetic force, and the material cost can be reduced.

In the above technical solution, the magnetic member includes a plurality of magnetic blocks disposed along a circumferential direction of the helical gear.

In this technical scheme, through set up a plurality of magnetic blocks along circumference on the helical gear to at the helical gear rotation in-process, produce magnetic force effect to the helical gear through a plurality of magnetic blocks, in order to offset the axial force that the helical gear received, thereby can reduce the size of single magnetic block, be favorable to reducing the overall weight of helical gear subassembly, reduce processing cost.

Further, the magnetic part comprises a plurality of magnetic blocks which are uniformly arranged by taking the gear shaft as the center.

In this technical scheme, evenly set up a plurality of magnetic blocks through using the gear shaft as the center, can make every magnetic block produce the magnetic force that the size is the same, the magnetic force of a plurality of magnetic blocks acts on the helical gear jointly to make the magnetic force that the helical gear received at rotatory in-process more balanced, be favorable to improving the stability of helical gear subassembly rotation in-process. Meanwhile, the plurality of magnetic blocks are uniformly arranged by taking the gear shaft as the center, so that the total weight of the magnetic part is reduced, and the material cost is favorably reduced.

In the above technical solution, the magnetic member is a permanent magnet or an electromagnet.

In the technical scheme, the magnetic part is the electromagnet, the size of the magnetic force generated by the electromagnet is adjusted by the electric control unit electrically connected with the electromagnet, the magnetic force of the electromagnet can be correspondingly adjusted according to the size of the axial force received by the bevel gear, the adjustment precision is high, the situation that the difference between the magnetic force generated by the magnetic part to the bevel gear and the axial force received by the bevel gear is large can be effectively avoided, the possibility that the bevel gear is worn or axially moved in the transmission process is further reduced, the stability of the bevel gear in the transmission process is further improved, the noise is reduced, the magnetic force adjustment range of the electromagnet is larger, the applicability to the bevel gear is wider, and the electric control unit is applicable to the bevel gears of more models. In addition, the magnetic part can also be a permanent magnet, the magnetism is strong, larger axial force can be offset, and the application range is wide.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 illustrates a cutaway view of a helical gear assembly of one embodiment of the present invention;

FIG. 2 shows a partial schematic view of FIG. 1;

FIG. 3 illustrates a partial cross-sectional view of a helical gear assembly of one embodiment of the present invention;

FIG. 4 illustrates a partial cross-sectional view of a helical gear assembly of one embodiment of the present invention;

FIG. 5 illustrates a schematic structural view of a helical gear assembly according to an embodiment of the present invention;

FIG. 6 illustrates a schematic structural view of a helical gear assembly according to an embodiment of the present invention;

FIG. 7 illustrates a schematic structural view of a helical gear assembly according to an embodiment of the present invention;

FIG. 8 illustrates a schematic structural view of a helical gear assembly according to an embodiment of the present invention;

fig. 9 shows a schematic structural diagram of a helical gear assembly according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 9 is:

the magnetic gear comprises a machine body 1, a gear shaft 2, a fixing bolt 21, a stop part 22, a bevel gear 3, a first magnetic part 41, a second magnetic part 42, a third magnetic part 43 and a magnetic block 44.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Helical gear assemblies according to some embodiments of the present invention are described below with reference to fig. 1-9.

Example one

As shown in fig. 1, in one embodiment of the present invention, there is provided a helical gear assembly, comprising: the method comprises the following steps: a gear shaft 2; the helical gear is rotatably sleeved on the outer side of the gear shaft 2 and can rotate around the gear shaft 2 in the meshing process; the magnetic part is used for generating magnetic force to the helical gear; when the helical gear rotates around the gear shaft 2, the magnetic force generated by the magnetic part to the helical gear partially offsets the axial force applied to the helical gear. The gear shaft 2 is used as the rotation center of the helical gear by being provided with the gear shaft 2 and the helical gear sleeved on the outer side of the gear shaft 2, and the helical gear is limited to move along the radial direction by the gear shaft 2 and can rotate around the gear shaft 2 in the meshing process so as to realize the power transmission through the meshing of the helical gear. By providing the magnetic member, specifically, by providing the first magnetic member 41, when the helical gear rotates around the gear shaft 2, the first magnetic member 41 exerts a magnetic force on the helical gear, and the magnetic force is opposite to the direction of the axial force applied to the helical gear, so as to counteract part or all of the axial force applied to the helical gear. It can be understood that the helical gear 3 generates an axial force due to the tooth form inclination in the meshing transmission process, and the helical gear 3 accelerates the abrasion of the end face of the helical gear 3 under the action of the axial force for a long time, and may cause the helical gear 3 to axially shift and generate a loud noise in severe cases. Through the magnetic force effect of the magnetic part, the axial force borne by the helical gear 3 can be offset, the possibility of abrasion or axial movement of the helical gear 3 is reduced, the stability of the helical gear 3 in the transmission process is improved, the failure rate and the use cost are reduced, and meanwhile, the noise can be effectively reduced.

Wherein, the fixed connection mode of magnetism spare and gear shaft 2 includes but not limited to riveting, joint, threaded connection, interference fit.

It is emphasized that the direction of the axial force to which the bevel gear 3 is subjected is related to the rotational direction of the bevel gear 3, the rotational direction around the gear shaft 2 and whether the bevel gear 3 is actively rotating. It will be appreciated that the helical gears 3 which mesh with one another are oppositely handed, i.e. one is a left hand helical gear and the other is a right hand helical gear.

Example two

As shown in fig. 2 to 3, the magnetic member includes: the first magnetic member 41 is disposed at one end of the gear shaft 2, and a magnetic attraction force generated by the first magnetic member 41 on the counter helical gear partially offsets an axial force applied to the helical gear. By arranging the first magnetic member 41 at one end of the gear shaft 2, as shown in fig. 2, the axial force applied to the helical gear 3 is F1 facing one side of the machine body 1, and the first magnetic member 41 is arranged at one end of the gear shaft 2 away from the machine body 1 to generate a magnetic force F2 opposite to the axial force F1 applied to the helical gear 3 to counteract part or all of the axial force applied to the helical gear 3; as shown in fig. 3, the axial force F1 applied to the helical gear 3 is opposite to the machine body 1, and the first magnetic element 41 is disposed at an end of the gear shaft 2 close to the machine body 1 to generate a magnetic force F2 opposite to the axial force F1 applied to the helical gear 3, so as to reduce the possibility that the helical gear 3 is worn or axially moved under the action of the axial force F1, thereby effectively improving the stability of the helical gear 3 in the transmission process, reducing the failure rate and the use cost, and reducing noise. It is emphasized that the bevel gear 3 may be made of any material having magnetic permeability.

EXAMPLE III

As shown in fig. 4, the magnetic member includes a second magnetic member 42 and a third magnetic member 43, one of the second magnetic member 42 and the third magnetic member 43 is disposed on the helical gear, the opposite surface magnetic poles of the second magnetic member 42 and the third magnetic member 43 are the same, and the axial force exerted on the helical gear is partially offset by the repulsive force generated by the helical gear of the second magnetic member 42 and the third magnetic member 43. By arranging the second magnetic part 42 and the third magnetic part 43, one of the second magnetic part 42 and the third magnetic part 43 is arranged on the helical gear, and the polarities of the magnetic poles of the second magnetic part 42 and the third magnetic part 43 are the same, so that a magnetic force repelling each other is generated between the second magnetic part 42 and the third magnetic part 43, a part or all of axial force borne by the helical gear is offset, the possibility of abrasion or axial play of the helical gear in the transmission process is reduced, the stability of the helical gear in the transmission process is improved, and noise is reduced. The helical gear can be made of materials with magnetic conductivity or materials without magnetic conductivity, the material selection range of the helical gear is wider, and the applicability of the helical gear component is wider.

Example four

As shown in fig. 2, a gap T exists between an end surface of the first magnetic member 41 on the side close to the helical gear 3 and an end surface of the helical gear 3 on the side close to the first magnetic member 41, and the magnitude of the magnetic force F2 generated by the first magnetic member 41 on the helical gear 3 is inversely related to the magnitude of the gap T. A gap T exists between the end face of one side, close to the helical gear 3, of the first magnetic part 41 and the end face of one side, close to the first magnetic part 41, of the helical gear 3, the size of the magnetic force F2, generated by the first magnetic part 41 to the helical gear 3, is in negative correlation with the size of the gap T, the size of the magnetic force F2, generated by the first magnetic part 41 to the helical gear 3, can be adjusted by controlling the size of the gap T, the gap T is adjusted according to the size of the axial force F1 borne by the helical gear 3, the magnetic force F2 generated by the first magnetic part 41 is close to the axial force F1 borne by the helical gear 3, and therefore the abrasion and the axial play of the helical gear 3 are reduced through the first magnetic part 41. Specifically, the first magnetic member 41 is provided with a threaded hole along the axial direction of the gear shaft, the outer side wall of the gear shaft 2 is provided with an external thread matched with the threaded hole, and the first magnetic member 41 is in threaded fit with the gear shaft 2, so that the first magnetic member 41 can be screwed in or out on the gear shaft 2 along the axial direction, and then the gap T between the first magnetic member 41 and the helical gear 3 is changed. When the axial force F1 received by the helical gear 3 is larger, the gap T can be correspondingly reduced, so that the magnetic force F2 generated by the first magnetic member 41 is correspondingly increased, and when the axial force F1 received by the helical gear 3 is smaller, the gap T can be correspondingly increased, so that the magnetic force F2 generated by the first magnetic member 41 is correspondingly reduced. In addition, the gap T exists between the end surface of the first magnetic member 41 close to the helical gear 3 and the end surface of the helical gear 3 close to the first magnetic member 41, so that the contact acting force of the first magnetic member 41 and the helical gear 3 which is generated when the helical gear 3 contacts with each other can be prevented from influencing the effectiveness of the magnetic force action

EXAMPLE five

As shown in fig. 5, the helical gear 3 is a left-handed helical gear, and during the meshing process, when the helical gear 3 actively rotates clockwise or passively rotates counterclockwise in a direction toward the machine body 1, the first magnetic member 41 is disposed at one end of the gear shaft 2 close to the machine body 1. When the helical gear 3 is a left-handed helical gear, the first magnetic member 41 is disposed at one end of the gear shaft 2 close to the machine body 1 when the helical gear 3 actively rotates clockwise or passively rotates counterclockwise in a direction toward the machine body 1 during the meshing process, so that the magnetic force generated by the first magnetic member 41 on the helical gear 3 can counteract a part or all of the axial force applied to the helical gear 3. It can be understood that, the left-handed helical gear is at the meshing in-process, when doing clockwise initiative rotation or anticlockwise passive rotation in the direction towards organism 1, all can receive the direction for the axial force effect of keeping away from organism 1, the magnetic force effect towards organism 1 direction is produced to helical gear 3 through locating the first magnetic part 41 that gear shaft 2 is close to the one end of organism 1 this moment, can offset the partial or whole axial force that helical gear 3 received, thereby improve the stability of helical gear 3 in the transmission process, reduce the possibility that helical gear 3 produced wearing and tearing or axial force, reduce the noise.

EXAMPLE six

As shown in fig. 6, the helical gear 3 is a left-handed helical gear, and during the meshing process, when the helical gear 3 actively rotates counterclockwise or passively rotates clockwise in a direction toward the machine body 1, the first magnetic member 41 is disposed at an end of the gear shaft 2 away from the machine body 1. The helical gear 3 is a left-handed helical gear, and when the helical gear 3 actively rotates counterclockwise or passively rotates clockwise in a direction toward the machine body 1 during the meshing process, the first magnetic member 41 is disposed at an end of the gear shaft 2 away from the machine body 1, so that the magnetic force generated by the first magnetic member 41 on the helical gear 3 counteracts a part or all of the axial force applied to the helical gear 3. It can be understood that, the left-handed helical gear is at the meshing in-process, when doing anticlockwise initiative rotation or clockwise passive rotation in the direction towards organism 1, all can receive the direction for the effect of the axial force towards organism 1, the magnetic force effect of keeping away from organism 1 direction is produced to helical gear 3 through locating first magnetic part 41 of the one end that organism 1 was kept away from to gear shaft 2 this moment, can offset the partial or whole axial force that helical gear 3 received, thereby improve the stability of helical gear 3 in transmission process, reduce the possibility that helical gear 3 produced wearing and tearing or axial force, less noise.

EXAMPLE seven

As shown in fig. 7, the helical gear 3 is a right-handed helical gear, and during the meshing process, when the helical gear 3 actively rotates clockwise or passively rotates counterclockwise in a direction toward the machine body 1, the first magnetic member 41 is disposed at an end of the gear shaft 2 away from the machine body 1. The helical gear 3 is a right-handed helical gear, and when the helical gear 3 actively rotates clockwise or passively rotates counterclockwise in a direction toward the machine body 1 during the meshing process, the first magnetic member 41 is disposed at one end of the gear shaft 2 away from the machine body 1, so that the magnetic force generated by the first magnetic member 41 on the helical gear 3 counteracts a part or all of the axial force applied to the helical gear 3. It can be understood that, the dextrorotation helical gear is at the meshing in-process, when doing clockwise initiative rotation or anticlockwise passive rotation in the direction towards organism 1, all can receive the direction for the effect of the axial force towards organism 1, the magnetic force effect of keeping away from organism 1 direction is produced to helical gear 3 through locating the first magnetic part 41 of the one end that organism 1 was kept away from to gear shaft 2 this moment, can offset the partial or whole axial force that helical gear 3 received, thereby improve the stability of helical gear 3 in transmission process, reduce the possibility that helical gear 3 produced wearing and tearing or axial force, reduce the noise.

Example eight

As shown in fig. 8, the helical gear 3 is a right-handed helical gear, and during the meshing process, when the helical gear 3 actively rotates counterclockwise or passively rotates clockwise in a direction toward the machine body 1, the first magnetic member 41 is disposed at one end of the gear shaft 2 close to the machine body 1. The helical gear 3 is a right-handed helical gear, and when the helical gear 3 actively rotates counterclockwise or passively rotates clockwise in a direction toward the machine body 1 during the meshing process, the first magnetic member 41 is disposed at one end of the gear shaft 2 close to the machine body 1, so that the magnetic force generated by the first magnetic member 41 on the helical gear 3 counteracts a part or all of the axial force applied to the helical gear 3. It can be understood that, the dextrorotation helical gear is at the meshing in-process, when doing anticlockwise initiative rotation or clockwise passive rotation in the direction towards organism 1, all can receive the direction for the axial force effect of keeping away from organism 1, the magnetic force effect towards organism 1 direction is produced to helical gear 3 through locating the first magnetic part 41 that gear shaft 2 is close to the one end of organism 1 this moment, can offset the partial or whole axial force that helical gear 3 received, thereby improve the stability of helical gear 3 in the transmission course, reduce the possibility that helical gear 3 produced wearing and tearing or axial force, reduce the noise.

Example nine

As shown in fig. 2, the gap between the end surface of the first magnetic member 41 on the side close to the helical gear 3 and the end surface of the helical gear 3 on the side close to the first magnetic member 41 is 0.1 mm to 5 mm. The size of the gap T between the end surface of the first magnetic part 41 close to the helical gear 3 and the end surface of the helical gear 3 close to the first magnetic part 41 is limited to be between 0.1 mm and 5 mm, so that the magnetic force F2 generated by the first magnetic part 41 to the helical gear 3 can counteract part or all of the axial force F1 applied to the helical gear 3, wherein the magnetic force F2 generated by the first magnetic part 41 to the helical gear 3 is reduced along with the increase of the gap T, and therefore, according to the difference of the damaged axial force F1 of the helical gear 3, the size of the magnetic force F2 generated by the first magnetic part 41 to the helical gear 3 can be changed by correspondingly adjusting the size of the gap T, and the applicability of the helical gear assembly is improved.

Furthermore, the size of the gap T is selected from a range of 0.3 mm to 3 mm, so as to reduce the difference between the magnetic force F2 generated by the first magnetic member 41 on the helical gear 3 and the axial force F1 exerted on the helical gear 3.

Furthermore, the size of the gap T is selected within a range from 0.5 mm to 1.5 mm, which can prevent the first magnetic member 41 from interfering with the rotation of the helical gear 3 or generating a reverse acting force on the helical gear 3 due to too small gap T, and can prevent the magnetic force F2 of the first magnetic member 41 on the helical gear 3 from being too small and from failing to counteract the axial force F1 of the helical gear 3 due to too large gap T, thereby ensuring that the magnitude of the magnetic force F2 generated by the first magnetic member 41 on the helical gear 3 is close to or equal to the magnitude of the axial force F1 borne by the helical gear 3, further reducing the possibility of the wear or the axial play of the helical gear 3 in the transmission process, further improving the stability of the helical gear 3 in the transmission process, and reducing the noise.

Example ten

As shown in fig. 7, the magnetic member includes an annular magnetic band centered on the gear shaft 2, and the inner diameter of the annular magnetic band is greater than or equal to the outer diameter of the gear shaft 2. The circular magnetic belt taking the gear shaft 2 as the center can enable the magnetic force generated by the circular magnetic belt to the helical gear 3 to be uniform and stable, reduce the radial bending moment generated to the helical gear 3 and prevent the radial abrasion of the helical gear 3; by making the inner diameter of the circular magnetic belt larger than or equal to the outer diameter of the gear shaft 2, the axial component force of the magnetic force generated by the circular magnetic belt to the helical gear 3 can be increased, the radial component force can be reduced, and the effect of the magnetic force action of the magnetic part to the helical gear 3 can be increased, so that the weight of the magnetic part can be reduced without changing the magnitude of the magnetic force, and the reduction of the material cost is facilitated.

EXAMPLE eleven

As shown in fig. 9, the magnetic member includes a plurality of magnetic blocks 44 arranged along the circumferential direction of the helical gear, and the plurality of magnetic blocks 44 are arranged on the helical gear along the circumferential direction, so that during the rotation of the helical gear, the plurality of magnetic blocks 44 generate a magnetic force action on the helical gear to counteract part or all of the axial force applied to the helical gear, thereby reducing the size of the single magnetic block 44, facilitating the reduction of the total weight of the helical gear assembly, and reducing the processing cost.

Further, the plurality of magnetic blocks 44 are uniformly arranged with the gear shaft 2 as the center so that the magnetic force applied to the helical gear 3 in the rotating process is uniform and stable, thereby realizing the purpose of offsetting partial or all axial force applied to the helical gear 3, reducing the possibility of abrasion or axial movement of the helical gear 3 and reducing noise.

Example twelve

The magnetic part is an electromagnet, and the size of the magnetic force generated by the electromagnet is adjusted through an electric control unit electrically connected with the electromagnet. In this embodiment, the magnetic member is an electromagnet, and the electric control unit electrically connected with the electromagnet adjusts the magnetic force generated by the electromagnet, so that the magnetic force of the electromagnet can be correspondingly adjusted according to the magnitude of the axial force applied to the helical gear 3, the adjustment precision is high, and the situation that the difference between the magnetic force generated by the magnetic member to the helical gear 3 and the axial force applied to the helical gear 3 is large can be effectively avoided, so that the possibility that the helical gear 3 is worn or axially moved in the transmission process is further reduced, the stability of the helical gear 3 in the transmission process is further improved, and the noise is reduced. In addition, the magnetic force adjustment range of the electromagnet is wider, the applicability to the helical gear 3 is wider, and the electromagnetic helical gear adjusting device is applicable to helical gears of more models.

In addition, the magnetic part can also be a permanent magnet, the magnetism is strong, larger axial force can be offset, and the application range is wide.

EXAMPLE thirteen

As shown in fig. 2, one end of the gear shaft 2 away from the machine body 1 is provided with a stop portion 22 for limiting the axial movement of the helical gear 3. One end of the gear shaft 2, which is far away from the machine body 1, is provided with a stop part 22 for limiting the axial movement of the bevel gear 3 so as to limit the axial movement of the bevel gear 3, and the bevel gear 3 is prevented from falling off from the gear shaft 2 in the rotating process to influence the normal transmission of the bevel gear 3. The stopping portion 22 may be a portion of the gear shaft 2, or may be a separate component that is fixedly connected to the gear shaft 2 and can limit the axial movement of the helical gear 3.

Further, the gear shaft 2 extends outward in the radial direction to form a shoulder. The shaft shoulder formed by extending the gear shaft 2 outwards along the radial direction is used as the abutting part 22, namely the abutting part 22 and the gear shaft 2 are an integral part and used for limiting the axial movement of the helical gear 3, the number of connecting pieces can be reduced, the processing technology is simplified, and the processing cost is favorably reduced.

Further, the outer diameter of the magnetic member is equal to the outer diameter of the helical gear 3. By limiting the outer diameter of the magnetic member to be equal to the outer diameter of the helical gear 3, the radial component of the magnetic force generated by the magnetic member on the helical gear 3 can be further reduced, and the effectiveness of the magnetic force action of the magnetic member on the helical gear 3 can be improved. In addition, the outer diameter of the magnetic part is equal to that of the bevel gear 3, so that the whole size of the bevel gear assembly cannot be changed, and the bevel gear 3 can be protected.

Example fourteen

The utility model provides a helical gear subassembly, accessible produce the axial force opposite direction's that receives with helical gear 3 magnetic force to helical gear 3 to offset the part or whole axial force that helical gear 3 received.

Specifically, as shown in fig. 1 to 2, the bevel gear assembly uses a machine body 1 as a mounting base, a gear shaft 2 is fixed on one side of the machine body 1 through a fixing bolt 21, a bevel gear 3 is sleeved on the gear shaft 2, and one end of the gear shaft 2, which is far away from the machine body 1, is provided with a stop portion 22 extending radially outward to limit axial movement of the bevel gear 3, specifically, the stop portion 22 is a shaft shoulder extending radially outward of the gear shaft 2; one end of the gear shaft 2, which is far away from the machine body 1, is provided with a first magnetic part 41; the helical gear 3 can rotate around the gear shaft 2 when being meshed with another helical gear, the axial force F1 borne by the helical gear 3 during rotation is in a direction towards the machine body 1, and the first magnetic part 41 generates a magnetic force F2 opposite to the axial force borne by the helical gear 3 on the helical gear 3 so as to counteract partial or all of the axial force F1 borne by the helical gear 3, so that the possibility of abrasion and axial movement of the helical gear 3 is reduced.

The gap T exists between the end surface of the first magnetic member 41 close to the helical gear 3 and the end surface of the helical gear 3 close to the first magnetic member 41, and the magnitude of the magnetic force F2 of the first magnetic member 41 is inversely related to the magnitude of the gap T, that is, the larger the gap T, the smaller the magnetic force F2 is, so that the magnitude of the magnetic force F2 of the first magnetic member 41 can be adjusted by changing the magnitude of the gap T according to the magnitude of the axial force received by the helical gear 3, so that the magnitude of the magnetic force F2 of the first magnetic member 41 is close to the axial force F1 of the helical gear 3. Specifically, the first magnetic member 41 is provided with a threaded hole along the axial direction of the gear shaft, the outer side wall of the gear shaft 2 is provided with an external thread matched with the threaded hole, and the first magnetic member 41 is in threaded fit with the gear shaft 2, so that the first magnetic member 41 can be screwed in or out on the gear shaft 2 along the axial direction, and then the gap T between the first magnetic member 41 and the helical gear 3 is changed.

Further, the first magnetic member 41 is an annular magnetic belt centered on the gear shaft 2, and the inner diameter of the annular magnetic belt is equal to or larger than the outer diameter of the gear shaft 2, and the outer diameter of the annular magnetic belt is equal to the outer diameter of the helical gear 3. The magnetic force generated by the circular magnetic belt to the helical gear 3 is uniform and stable, and the radial bending moment generated to the helical gear 3 can be reduced, so that the radial abrasion of the helical gear 3 is prevented; by making the inner diameter of the circular magnetic belt larger than or equal to the outer diameter of the gear shaft 2, the axial component force of the magnetic force generated by the circular magnetic belt to the helical gear 3 can be increased, the radial component force can be reduced, and the effect of the magnetic force action of the magnetic part to the helical gear 3 can be increased, so that the weight of the magnetic part can be reduced without changing the magnitude of the magnetic force, and the reduction of the material cost is facilitated. By limiting the outer diameter of the first magnetic member 41 to be equal to the outer diameter of the helical gear 3, the radial component of the magnetic force generated by the first magnetic member 41 on the helical gear 3 can be further reduced, and the effectiveness of the magnetic force action of the first magnetic member 41 on the helical gear 3 can be improved. In addition, the outer diameter of the first magnetic member 41 is equal to the outer diameter of the helical gear 3, so that the helical gear 3 can be protected without changing the overall size of the helical gear assembly.

As shown in fig. 3, the bevel gear assembly differs from the embodiment shown in fig. 2 in the direction of the axial force applied to the bevel gear 3 and the position of the first magnetic member 41. The axial force F1 exerted on the helical gear 3 is in a direction away from the machine body 1, at this time, the first magnetic member 41 is disposed on the gear shaft 2 on a side close to the machine body 1, and the first magnetic member 41 generates a magnetic force F2 on the helical gear 3 in a direction toward the machine body 1, so that the magnetic force F2 cancels part or all of the axial force F1 exerted on the helical gear 3, thereby reducing the possibility of wear and axial play of the helical gear 3.

As shown in fig. 5, the lower helical gear 3 is a left-handed helical gear and meshes with another upper helical gear. The helical gear 3 of below is when doing clockwise initiative rotation or anticlockwise passive rotation in the direction towards organism 1, all can receive the direction for the effect of the axial force of organism 1 dorsad, the produced magnetic force towards organism 1 direction of first magnetic part 41 that is close to the one end of organism 1 through the gear shaft 2 of locating the below this moment, can offset the part or all axial force that the helical gear 3 of below received, thereby improve the stability of helical gear 3 in transmission process, reduce the possibility that helical gear 3 produced wearing and tearing or axial force, reduce the noise.

As shown in fig. 6, the lower helical gear 3 is a left-handed helical gear and meshes with another upper helical gear. Helical gear 3 of below is when doing anticlockwise initiative rotation or clockwise passive rotation in the direction towards organism 1, all can receive the direction for the effect of the axial force towards organism 1, the produced magnetic force effect of the organism 1 direction of keeping away from of the first magnetic part 41 of the one end of organism 1 is kept away from through the gear shaft 2 of locating the below this moment, can offset the part or all axial force that helical gear 3 of below received, thereby improve the stability of helical gear 3 in transmission process, reduce the possibility that helical gear 3 produces wearing and tearing or axial force, reduce the noise.

As shown in fig. 7, the upper bevel gear 3 is a right-hand bevel gear and is engaged with another bevel gear at the lower side. When the helical gear 3 of top is making clockwise initiative rotation or anticlockwise passive rotation in the direction towards organism 1, all can receive the direction for the effect of the axial force towards organism 1, the produced magnetic force effect of keeping away from organism 1 direction of the one end of organism 1 is kept away from through the gear shaft 2 of locating the top this moment, can offset the partial or whole axial force that the helical gear 3 of top received, thereby improve the stability of helical gear 3 in transmission process, reduce the possibility that helical gear 3 produced wearing and tearing or axial force, reduce the noise.

As shown in fig. 8, the upper bevel gear 3 is a right-hand bevel gear and meshes with another lower bevel gear. When the helical gear 3 of top is doing anticlockwise initiative rotation or clockwise passive rotation in the direction towards organism 1, all can receive the direction for the effect of the axial force of organism 1 dorsad, the produced magnetic force towards organism 1 direction of first magnetic part 41 that is close to the one end of organism 1 through the gear shaft 2 of locating the top this moment, can offset the partial or whole axial force that the helical gear 3 of top received, thereby improve the stability of helical gear 3 in transmission process, reduce the possibility that helical gear 3 produces wearing and tearing or axial force, reduce the noise.

As shown in fig. 4, the helical gear assembly is different from that shown in fig. 3 in that the helical gear 3 receives different axial forces F1 in different directions, and the magnetic member is different. The axial force direction of the helical gear 3 is towards the machine body 1, one side of the helical gear 3 assembly close to the machine body 1 is provided with a second magnetic piece 42 and a third magnetic piece 43, the helical gear 3 is provided with a magnetic force F3 back to the machine body 1 direction through the second magnetic piece 42 and the third magnetic piece 43 so as to counteract partial or all axial force F1 borne by the helical gear 3, wherein, the second magnetic pole piece is arranged at one end of the gear shaft 2 close to the machine body 1, the third magnetic piece 43 is arranged at one end of the helical gear 3 close to the second magnetic piece 42 of the machine body 1, and the second magnetic piece 42 and the third magnetic piece 43 are the same in magnetism so as to generate mutual repulsive magnetic force between the second magnetic piece 42 and the third magnetic piece 43, the magnetic force F3 of the second magnetic piece 42 to the third magnetic piece 43 acts on the helical gear 3 so as to counteract partial or all axial force borne by the helical gear 3, thereby improving the stability of the helical gear 3 in the transmission process, the possibility of the helical gear 3 generating abrasion or axial force is reduced, and noise is reduced.

As shown in fig. 9, the magnetic member specifically includes a plurality of magnetic blocks 44 uniformly arranged around the gear shaft 2, and the plurality of magnetic blocks 44 jointly act on the helical gear 3 and generate uniform magnetic force, so that the magnetic force applied to the helical gear 3 in the rotation process is uniform and stable, a part or all of the axial force applied to the helical gear 3 is offset, the possibility of abrasion or axial movement of the helical gear 3 is reduced, and noise is reduced. Meanwhile, the plurality of magnetic blocks 44 are uniformly arranged by taking the gear shaft 2 as the center, so that the total weight of the magnetic part can be reduced, and the material cost is favorably reduced.

The advantages of the above embodiments are as follows:

the effect of the axial force of the bevel gear can be reduced, and the abrasion and the noise of the bevel gear are effectively reduced;

the position of the magnetic part can be changed according to the different directions of the axial force applied to the helical gear, and the size of the magnetic force can be adjusted according to the size of the gap between the magnetic part and the helical gear, so that the magnetic force adjusting device is suitable for different helical gears.

Above combine the figure to explain in detail the technical scheme of the utility model, can offset the partial or whole axial force that the helical gear received at rotatory in-process, effectively reduce the helical gear and take place the possibility of wearing and tearing and axial float, be favorable to improving the life of helical gear subassembly, reduce use cost, reducible noise simultaneously.

In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A helical gear assembly, comprising:

a gear shaft;

the bevel gear is rotatably sleeved on the outer side of the gear shaft and can rotate around the gear shaft in the meshing process;

a magnetic member for generating a magnetic force to the helical gear;

when the helical gear rotates around the gear shaft, the magnetic force generated by the magnetic part on the helical gear partially counteracts the axial force borne by the helical gear.

2. The helical gear assembly as claimed in claim 1, wherein said magnetic member comprises:

the first magnetic part is arranged at one end of the gear shaft, and the magnetic attraction force generated by the first magnetic part to the helical gear partially offsets the axial force borne by the helical gear.

3. The helical gear assembly as claimed in claim 1, wherein said magnetic member comprises:

the magnetic bearing comprises a second magnetic part and a third magnetic part, wherein one of the second magnetic part and the third magnetic part is arranged on the bevel gear, the opposite surface magnetic poles of the second magnetic part and the third magnetic part are the same, and the axial force borne by the bevel gear is partially offset by the repulsive force generated by the second magnetic part and the third magnetic part on the bevel gear.

4. The helical gear assembly of claim 2, wherein a gap exists between an end surface of said first magnetic member on a side thereof adjacent to said helical gear and an end surface of said helical gear on a side thereof adjacent to said first magnetic member.

5. The helical gear assembly of claim 4, wherein said gap is 0.1 mm to 5 mm.

6. The helical gear assembly according to claim 4, wherein said first magnetic member is screw-engaged with said gear shaft, and the size of said gap is adjusted by screwing said first magnetic member in or out in the axial direction of said gear shaft.

7. The helical gear assembly as claimed in any one of claims 1 to 6, wherein said magnetic member comprises:

and the inner diameter of the annular magnetic belt is greater than or equal to the outer diameter of the gear shaft.

8. The helical gear assembly according to any one of claims 1 to 6, wherein said magnetic member comprises a plurality of magnetic blocks disposed along a circumferential direction of said helical gear.

9. The helical gear assembly of claim 8, wherein a plurality of said magnetic blocks are uniformly arranged centered on said gear shaft.

10. The bevel gear assembly of any of claims 1 to 6 wherein said magnetic member is a permanent magnet or an electromagnet.