CN212272986U

CN212272986U - Gear transmission device with hydrodynamic grooves

Info

Publication number: CN212272986U
Application number: CN202021090301.5U
Authority: CN
Inventors: 付红; 克洛奇科·亚历山大·亚历山德罗维奇
Original assignee: Harbin Huayue Technology R & D Co ltd
Current assignee: Harbin Huayue Technology R & D Co ltd
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2021-01-01
Anticipated expiration: 2030-06-11

Abstract

The utility model discloses a gear transmission device with hydrodynamic grooves, which comprises a driving gear and a driven gear which are meshed with each other, wherein a plurality of hydrodynamic grooves are arranged on two side surfaces of each tooth of the driving gear; the hydrodynamic groove is a hole-shaped groove or a strip-shaped groove; the utility model discloses set up the hydrodynamic force recess in the side of the drive gear tooth, reduced coefficient of friction, the contact is gone on through the lubricated oil reservoir of liquid, when the lubricated oil reservoir contacts under non-Newton's liquid state, because hydrodynamic force has formed elasticity incompressible emollient to fluid non-Newton's state has been reduced, the noise has been reduced, spur gear transmission's durability and wearability have been increased, need not the grinding gear, thereby precision gear manufacturing requirement has been reduced.

Description

Gear transmission device with hydrodynamic grooves

Technical Field

The utility model relates to a gear drive technical field especially relates to a gear drive with fluid power recess.

Background

Gear drives are used in line equipment, gearboxes, gear drives, turbine generators, aircraft and marine equipment, and self-propelled equipment using high speed and high load spur gears.

The disadvantages of gear transmissions are tooth surface layer cracking, tooth surface layer falling, tooth wear, tooth deformation and tooth jamming. When the bending stress exceeds the limit of the fatigue strength, the bending stress is transferred from the stress maximum concentration region at the tooth root to the rim.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a gear drive with fluid power recess, with the problem of solving above-mentioned prior art existence, set up the fluid power recess in the side of the drive gear tooth, the coefficient of friction has been reduced, the contact is gone on through the lubricated oil reservoir of liquid, when the lubricated oil reservoir contacts under non-Newton's liquid state, because fluid power has formed elasticity incompressible emollient, thereby fluid non-Newton's state has been reduced, the noise has been reduced, spur gear drive's durability and wearability have been increased, need not the grinding gear, thereby precision gear manufacturing requirement has been reduced.

In order to achieve the above object, the utility model provides a following scheme:

the utility model provides a gear drive with fluid power recess, drive gear and driven gear including intermeshing connects, wherein set up on the both sides face of each tooth of drive gear and put a plurality of fluid power recesses.

Preferably, the driving gear and the driven gear are both straight gears, or the driving gear and the driven gear are both helical gears.

Preferably, the hydrodynamic grooves are hole-type grooves, the hydrodynamic grooves are arranged along the height direction of the teeth, and each row is provided with a plurality of hole-type hydrodynamic grooves.

Preferably, the row spacing between two adjacent rows of hydrodynamic grooves is 0.3 times the gear module, the distance from the tooth crest to the top first row of hydrodynamic grooves is 0.3 times the gear module, and the distance between two adjacent hydrodynamic grooves in each row of hydrodynamic grooves is 0.3 times the gear module.

Preferably, the hydrodynamic grooves are strip-shaped grooves, the hydrodynamic grooves are arranged along the height direction of the teeth, and each row is provided with one strip-shaped hydrodynamic groove extending along the length of the gear.

Preferably, the distance between two adjacent rows of hydrodynamic grooves is 0.3 times the gear module, and the distance from the tooth crest to the top first row of hydrodynamic grooves is 0.3 times the gear module.

The utility model discloses following beneficial technological effect has been gained for prior art:

the utility model provides a gear with fluid power recess through the high preparation fluid power recess of tooth is followed to the both sides face at drive gear to improve gear. Thereby, the coefficient of friction is reduced, the contacting being by an oily liquid elastic incompressible layer which is in a non-newtonian state upon contact. The contact area on the involute surface of the gear forms a special hydrodynamic groove on the driving gear, so that the friction coefficient is reduced, the contact is carried out through a liquid lubricating oil layer, and when the lubricating oil layer is contacted in a non-Newtonian liquid state, the fluid dynamic forms an elastic incompressible lubricant, so that the non-Newtonian state of the fluid is reduced, the noise is reduced, the durability and the wear resistance of the gear transmission device are improved, the gear does not need to be ground, and the manufacturing requirement of a precision gear is reduced. The hydrodynamic grooves on the involute surface of the driving gear ensure high bearing capacity of the involute surface, ensure the rotating speed of 3m/s, have smaller friction coefficient in a larger rotating speed range, ensure high load damping of gear vibration at the input and output of a meshing part, and reduce the influence of processing the technical transmission error on the gear surface.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a gear assembly with hydrodynamic grooves according to the present invention;

fig. 2 is a schematic partial perspective view of a driving gear according to a first embodiment of the present invention.

Fig. 3 is a schematic perspective view of a driving gear in the second embodiment.

Fig. 4 is a schematic partial perspective view of a driving gear in the second embodiment.

In the figure: 1-driving gear, 2-driven gear, 3-hydrodynamic groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model aims at providing a gear drive with fluid power recess to solve the problem that prior art exists.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

The first embodiment is as follows:

the present embodiment provides a gear transmission device with hydrodynamic grooves, as shown in fig. 1, including a driving gear 1 and a driven gear 2 engaged with each other, wherein two side surfaces of each tooth of the driving gear 1 are provided with a plurality of hydrodynamic grooves 3; the driving gear 1 and the driven gear 2 may be of two types, one type is that the driving gear 1 and the driven gear 2 are both straight gears, and the other type is that the driving gear 1 and the driven gear 2 are both helical gears.

As shown in fig. 2, in the present embodiment, the hydrodynamic grooves 3 are hole-type grooves, the hydrodynamic grooves 3 are arranged along the height direction of the teeth, and each row is provided with a plurality of hole-type hydrodynamic grooves 3; the row spacing between two adjacent rows of hydrodynamic grooves 3 is 0.3 times of the gear module, the distance from the tooth crest to the first row of hydrodynamic grooves 3 at the top is 0.3 times of the gear module, and the distance between two adjacent hydrodynamic grooves 3 in each row of hydrodynamic grooves 3 is 0.3 times of the gear module (the gear module in this embodiment is 10 mm).

Example two:

the difference between this embodiment and the first embodiment is that, as shown in fig. 3-4, the hydrodynamic grooves 3 in this embodiment are strip-shaped grooves, the hydrodynamic grooves 3 are arranged along the height direction of the teeth, each row is provided with one strip-shaped hydrodynamic groove 3 extending along the length of the gear, the row spacing between two adjacent rows of hydrodynamic grooves 3 is 0.3 times the gear module, and the distance from the tooth crest to the first row of hydrodynamic grooves 3 at the top is 0.3 times the gear module.

The utility model provides a gear drive with fluid power recess's working method as follows:

the lubricating liquid between the contact surfaces of the gears, when the transmission rotates at a speed greater than 3m/s, enters the hydrodynamic grooves 3, which are placed upright, and the grooves on both sides of the gears, and is transferred from the newtonian state to the non-newtonian state of the lubricant under the action of the load force.

Due to the hydrodynamic grooves 3, the lubricating fluid becomes elastically incompressible in the non-Newtonian state, the friction coefficient is reduced at the rotation speed of the spur gear, the noise is reduced, the durability of the spur gear is improved, and the requirement on the manufacturing accuracy of the spur gear is lowered.

Due to the use of the spur gear transmission with the hydrodynamic grooves 3, the friction coefficient is reduced, the noise is reduced, the durability of the spur gear is improved, the precision manufacturing requirements for the spur gear are reduced, and the motion accuracy, smoothness and transverse play standard are improved.

The spur gear transmission device with the fluid power grooves 3 can reduce the high damping of the rotating pulsating load of the spur gear, reduce the noise and provide the spur gear with high bearing capacity.

The utility model discloses the principle and the implementation mode of the utility model are explained by applying the concrete examples, and the explanation of the above examples is only used for helping to understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present description should not be construed as a limitation of the present invention.

Claims

1. A gear transmission with hydrodynamic grooves is characterized in that: the hydrodynamic transmission device comprises a driving gear and a driven gear which are meshed with each other, wherein a plurality of hydrodynamic grooves are formed in two side faces of each tooth of the driving gear.

2. The gear assembly with hydrodynamic grooves of claim 1, wherein: the driving gear and the driven gear are straight gears, or the driving gear and the driven gear are helical gears.

3. The gear assembly with hydrodynamic grooves of claim 1, wherein: the hydrodynamic grooves are hole-shaped grooves, the hydrodynamic grooves are arranged along the height direction of the teeth, and each row is provided with a plurality of hole-shaped hydrodynamic grooves.

4. The gear assembly with hydrodynamic grooves of claim 3, wherein: the row spacing of two adjacent rows of hydrodynamic grooves is 0.3 times of gear module, the distance from the tooth crest to the first row of hydrodynamic grooves at the top is 0.3 times of gear module, and the distance between two adjacent hydrodynamic grooves in each row of hydrodynamic grooves is 0.3 times of gear module.

5. The gear assembly with hydrodynamic grooves of claim 1, wherein: the hydrodynamic grooves are strip-shaped grooves, the hydrodynamic grooves are arranged along the height direction of the teeth, and each row is provided with a strip-shaped hydrodynamic groove extending along the length of the gear.

6. The gear assembly with hydrodynamic grooves of claim 5, wherein: the row spacing of two adjacent rows of hydrodynamic grooves is 0.3 times of the gear module, and the distance from the tooth crest to the first row of hydrodynamic grooves at the top is 0.3 times of the gear module.