CN210484575U

CN210484575U - Gear transmission structure

Info

Publication number: CN210484575U
Application number: CN201920841027.1U
Authority: CN
Inventors: 徐兰英; 毛世杰; 伍强; 何宝兰; 赵鹏
Original assignee: Guangdong Polytechnic Normal University
Current assignee: Guangdong Polytechnic Normal University
Priority date: 2019-06-04
Filing date: 2019-06-04
Publication date: 2020-05-08
Anticipated expiration: 2029-06-04

Abstract

The utility model provides a gear drive structure, including rotation axis and gear, the rotation axis has oil feed passageway and oil through groove, and the oil feed passageway sets up in the inside of rotation axis, and the oil through groove sets up in the outer wall of rotation axis, and the oil through groove is linked together with the oil feed passageway, and the gear is inside to have the oil through hole, and the first end of oil through hole sets up on the teeth of a cogwheel of gear or the surface at the root circle place of gear tooth, and the second end of oil through hole sets up on the inner wall of centre bore, and the gear sleeve is located on the rotation axis and the oil through hole communicates with the oil through. The utility model discloses a carry lubricating oil to the meshing department of gear for the gear forms liquid dynamic pressure oil film in meshing department, guarantees lubricated effect, and the lubricated oil mass is practiced thrift to even lubricated oil mass to even lubricated effect simultaneously.

Description

Gear transmission structure

Technical Field

The utility model relates to a gear drive structure.

Background

The current gear transmission structure is widely applied to a plurality of fields, such as equipment of automobiles, ships, airplanes, robots which are hot at present and the like, and the transmission efficiency is high. However, under certain heavy load and poor lubrication conditions, gears are susceptible to damage to varying degrees, eventually leading to gear failure. At present, the problem of uneven lubricating oil quantity at the meshing position of the gears can occur in the lubricating process. When the amount of lubricating oil is less, the lubricating effect is poor, and the service life of the gear is short; when the amount of the lubricant is large, the lubricant is wasted, resulting in an increase in cost.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an object of the utility model is to provide a gear drive structure, can evenly lubricate the oil mass, evenly lubricate the effect, can also practice thrift lubricated oil mass when guaranteeing lubricated effect.

Based on this, the utility model provides a gear drive structure, including rotation axis and gear, the rotation axis has oil feed passageway and oil through groove, the oil feed passageway set up in the inside of rotation axis, the oil through groove set up in the outer wall of rotation axis, just the oil through groove with the oil feed passageway is linked together, the inside oil through hole that has of gear, the first end of oil through hole set up in on the teeth of a cogwheel of gear or the surface at the root circle place of gear, the second end of oil through hole set up in on the inner wall of centre bore, the gear housing is located on the rotation axis just the oil through hole with the oil through groove communicates mutually.

Optionally, a cross-sectional area of the first end of the oil through hole is larger than a cross-sectional area of the second end of the oil through hole.

Optionally, a cross-sectional area of the first end of the oil through hole is smaller than a cross-sectional area of the second end of the oil through hole.

Optionally, at least one end surface of the rotating shaft is provided with an opening, and the opening is communicated with the oil inlet channel.

Optionally, the oil inlet passage is arranged along the axial direction of the rotating shaft.

Optionally, still include connecting pipe and rotator, the rotator has outer loop and inner ring, the surface of outer loop set up in on the inner wall of oil feed passageway, the internal surface of outer loop with the surface rotatable coupling of inner ring, the internal surface cover of inner ring is established and is fixed in on the outer wall of connecting pipe.

Optionally, the oil pipe is sleeved on the connecting pipe, and the oil pipe is communicated with the connecting pipe.

Optionally, the oil pipe further comprises a snap ring, and the oil pipe is fixedly connected with the connecting pipe through the snap ring.

Optionally, a graphite coating is disposed between the inner surface of the outer ring and the outer surface of the inner ring.

Optionally, the rotating shaft is keyed to the gear.

The utility model discloses a gear drive structure, including rotation axis and gear, the rotation axis has oil feed passageway and oil through groove, and the oil feed passageway sets up in the inside of rotation axis, and the oil through groove sets up in the outer wall of rotation axis, and the oil through groove is linked together with the oil feed passageway, and the gear is inside to have the oil through hole, and the first end of oil through hole sets up on the teeth of a cogwheel of gear or the surface at the root circle place of gear tooth, and the second end of oil through hole sets up on the inner wall of centre bore, and the gear sleeve is located on the rotation axis and the oil through hole communicates with the oil. The oil supply to the oil inlet channel, lubricating oil can flow out from the first end of the oil through hole, so that the gear forms a liquid dynamic pressure oil film at the meshing position, the lubricating effect is guaranteed, the lubricating oil amount is uniform, the lubricating effect is uniform, and the lubricating oil amount is saved.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a partial enlarged view of an embodiment of the present invention.

Fig. 3 is a schematic view of a part of the structure of the embodiment of the present invention.

Description of reference numerals:

1. a rotating shaft; 11. an oil inlet channel; 12. an oil groove is communicated; 13. an opening; 14. a keyway; 2. a gear; 21. an oil through hole; 3. a connecting pipe; 4. a rotating body; 41. an outer ring; 42. an inner ring; 5. an oil pipe; 6. a snap ring.

Detailed Description

In the description of the present invention, it should be noted that the terms "top", "bottom", "inside", "outside", 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 element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Example one

Referring to fig. 1 to 3, a first embodiment provides a gear transmission structure, which includes a rotating shaft 1 and a gear 2, wherein the rotating shaft 1 has an oil inlet passage 11 and an oil through groove 12, the oil inlet passage 11 is disposed inside the rotating shaft 1, the oil through groove 12 is disposed on an outer wall of the rotating shaft 1, the oil through groove 12 is communicated with the oil inlet passage 11, an oil through hole 21 is disposed inside the gear 2, a first end of the oil through hole 21 is disposed on a gear tooth of the gear 2 or a surface where a gear root circle of the gear 2 is located, a second end of the oil through hole 21 is disposed on an inner wall of a central hole, the gear 2 is sleeved on the rotating shaft 1, and the oil through hole 21 is communicated with the oil. When oil is supplied to the oil inlet passage 11, the lubricating oil enters the oil inlet passage 11, flows into the oil through groove 12 from the oil inlet passage 11, flows into the oil through hole 21 from the oil through groove 12 through the second end of the oil through hole 21, and finally flows out from the first end of the oil through hole 21. When gear 2 in this embodiment meshes with other gears mutually, can form the dynamic pressure oil film during gear 2 motion, guarantee lubricated effect, carry lubricating oil to gear 2's meshing department through oil through 21 in addition, can unify the lubricated oil mass of each meshing department on gear 2, lubricated oil mass is comparatively even, and lubricated effect is also even, avoids the oil mass too much, saves lubricated oil mass. In the present embodiment, the rotary shaft 1 is provided with the key groove 14, and the rotary shaft 1 is keyed to the gear 2.

In the present embodiment, the cross-sectional area of the first end of the oil passage hole 21 is larger than the cross-sectional area of the second end of the oil passage hole 21. The structure is suitable for the traditional lubricating modes such as oil dripping, oil immersion, oil mist and the like.

In order to supply oil to the oil inlet channel 11, at least one end surface of the rotating shaft 1 is provided with an opening 13, and the opening 13 is communicated with the oil inlet channel 11. To facilitate the machining of the oil inlet passage 11, the oil inlet passage 11 is provided along the axial direction of the rotating shaft 1.

When the gear 2 rotates, the oil inlet channel 11 also rotates, and in order to supply oil to the oil inlet channel 11, the gear 2 transmission structure provided by the embodiment further includes a connecting pipe 3 and a rotating body 4, the rotating body 4 has an outer ring 41 and an inner ring 42, the outer surface of the outer ring 41 is arranged on the inner wall of the oil inlet channel 11, the inner surface of the outer ring 41 is rotatably connected with the outer surface of the inner ring 42, and the inner surface of the inner ring 42 is sleeved and fixed on the outer wall of the connecting pipe 3. The outer ring 41 rotates with the rotation of the oil inlet passage 11, but the connection pipe 3 connected to the inner ring 42 can not rotate with the rotation of the outer ring 41 because the outer ring 41 and the inner ring 42 are rotatably connected. In this embodiment, a graphite coating is provided between the inner surface of the outer ring 41 and the outer surface of the inner ring 42. The graphite coating layer plays a role of lubrication so that the outer ring 41 and the inner ring 42 can smoothly rotate. In other embodiments, other rotatable connections may be used. The gear 2 transmission structure provided by the embodiment further comprises an oil pipe 5, the oil pipe 5 is sleeved on the connecting pipe 3, and the oil pipe 5 is communicated with the connecting pipe 3. Lubricating oil enters the connecting pipe 3 from the oil pipe 5 and then enters the oil inlet channel 11 from the connecting pipe 3. Through setting up this kind of structure, when rotation axis 1 is rotatory, can not drive the rotation of oil pipe 5, can guarantee smooth fuel feeding. In the embodiment, the gear transmission structure further comprises a snap ring 6, and the oil pipe 5 is fixedly connected with the connecting pipe 3 through the snap ring 6. It should be noted that in the present embodiment, interference fits are adopted between the outer ring 41 and the oil inlet channel 11, between the inner ring 42 and the connecting pipe 3, and between the oil pipe 5 and the connecting pipe 3.

Example two

The second embodiment provides a gear transmission structure different from the first embodiment in that the cross-sectional area of the first end of the oil passage hole 21 is smaller than the cross-sectional area of the second end of the oil passage hole 21. The second embodiment is suitable for the occasion with heavy load, and the effect of the dynamic pressure oil film formed at the meshing part of the gear 2 under the working condition is better than that in the first embodiment.

The above is the utility model discloses an optimal embodiment, the utility model discloses an optimal embodiment is through at the inside oil through hole 21 that sets up of gear 2, sets up oil feed passageway 11 and oil through groove 12 in the rotation axis 1, carries lubricating oil to gear 2's meshing department for gear 2 forms the liquid dynamic pressure oil film in meshing department, guarantees lubricating effect, and even lubricated oil mass simultaneously, even lubricated effect practices thrift the lubricated oil mass.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a gear drive structure, its characterized in that, includes rotation axis and gear, the rotation axis has oil feed passageway and oil feed groove, the oil feed passageway set up in the inside of rotation axis, the oil feed groove set up in the outer wall of rotation axis, just the oil feed groove with the oil feed passageway is linked together, the inside oil feed hole that has of gear, the first end of oil feed hole set up in on the teeth of a cogwheel of gear or the surface at the tooth root circle place of gear, the second end of oil feed hole sets up on the inner wall of centre bore, the gear housing is located on the rotation axis just the oil feed hole with the oil feed groove communicates mutually.

2. The gear transmission structure according to claim 1, wherein a cross-sectional area of a first end of the oil passage hole is larger than a cross-sectional area of a second end of the oil passage hole.

3. The gear transmission structure according to claim 1, wherein a cross-sectional area of a first end of the oil passage hole is smaller than a cross-sectional area of a second end of the oil passage hole.

4. A gear transmission arrangement according to claim 2 or claim 3, wherein at least one end face of the rotary shaft has an opening therein, the opening communicating with the oil inlet passage.

5. The gear transmission structure according to claim 4, wherein the oil feed passage is provided in an axial direction of the rotating shaft.

6. The gear transmission structure according to claim 5, further comprising a connecting pipe and a rotating body, wherein the rotating body has an outer ring and an inner ring, the outer surface of the outer ring is disposed on the inner wall of the oil inlet passage, the inner surface of the outer ring is rotatably connected with the outer surface of the inner ring, and the inner surface of the inner ring is sleeved on and fixed to the outer wall of the connecting pipe.

7. The gear transmission structure according to claim 6, further comprising an oil pipe, wherein the oil pipe is sleeved on the connecting pipe, and the oil pipe is communicated with the connecting pipe.

8. The gear transmission structure according to claim 7, further comprising a snap ring, wherein the oil pipe is fixedly connected with the connecting pipe through the snap ring.

9. The gear transmission arrangement of claim 6, wherein a graphite coating is provided between the inner surface of the outer ring and the outer surface of the inner ring.

10. A gear transmission arrangement according to claim 2 or 3, wherein the rotary shaft is keyed to the gear.