CN107830148A - Gear, gear assembly, rotary reducer and engineering machinery - Google Patents

Gear, gear assembly, rotary reducer and engineering machinery Download PDF

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Publication number
CN107830148A
CN107830148A CN201711285893.9A CN201711285893A CN107830148A CN 107830148 A CN107830148 A CN 107830148A CN 201711285893 A CN201711285893 A CN 201711285893A CN 107830148 A CN107830148 A CN 107830148A
Authority
CN
China
Prior art keywords
gear
face
backing plate
straight
conical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711285893.9A
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Chinese (zh)
Inventor
浦秋林
贾广利
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suote Transmission Equipment Co Ltd
Original Assignee
Suote Transmission Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suote Transmission Equipment Co Ltd filed Critical Suote Transmission Equipment Co Ltd
Priority to CN201711285893.9A priority Critical patent/CN107830148A/en
Publication of CN107830148A publication Critical patent/CN107830148A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/17—Toothed wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02039—Gearboxes for particular applications

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Retarders (AREA)

Abstract

The invention discloses a kind of gear, gear assembly, rotary reducer and engineering machinery, and abrasion is easily caused on the part being in contact with it so that influenceing the technical problem of complete machine work to solve the existing cogged gear teeth.At least one end face of the gear includes facing directly and the conical surface, wherein, along the radial direction of gear, face directly and be sequentially connected from the inside to the outside with the conical surface, the conical surface deviates towards the other end of gear.

Description

Gear, gear assembly, rotary speed reducer and engineering machinery
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a gear, a gear assembly, a rotary speed reducer and engineering machinery.
Background
The rotary speed reducer is generally applied to rotary mechanisms of various engineering machines such as excavators and pile machines, and as a key part of the whole machine, the quality and the service life of the rotary speed reducer directly influence the service performance of the whole machine. The gear assembly is used as the most core component of the rotary speed reducer, any part in the gear assembly, which is in contact with the gear, fails or the gear fails, so that the rotary speed reducer fails, and the work of the whole machine is influenced.
The gear assembly generally includes the gear and is used for supporting the support body of gear, and the gear rotates with the support body to be connected, adopts the backing plate to separate between gear and the support body, and the relative support body of backing plate is fixed, and the actual design to hardness, the hardness of gear are greater than the hardness of backing plate, because the hardness difference of gear and backing plate, when the relative support body of gear rotates, the gear teeth of a cogwheel easily causes serious wearing and tearing to the backing plate, and then leads to the gyration speed reducer to become invalid, finally influences the work of whole machine.
Disclosure of Invention
The invention aims to provide a gear to solve the technical problem that the gear teeth of the existing gear easily abrade parts in contact with the gear teeth so as to influence the work of the whole gear.
The invention provides a gear, at least one end surface of the gear comprises a straight surface and a conical surface; wherein,
and along the radial direction of the gear, the straight surface and the conical surface are sequentially connected from inside to outside, and the conical surface deviates towards the other end surface of the gear.
Further, a connecting circle between the straight surface and the conical surface is positioned in a tooth root circle of the gear.
Further, along the radial direction of the gear, the distance between the tooth root circle of the gear and the connecting circle is the modulus of the gear.
Further, the included angle between the conical surface and the straight surface is 2 degrees.
Further, the two end faces of the gear have the same structure.
Further, the gear is a sun gear.
The gear is applied to the gear assembly, so that the end face of the gear is coaxially arranged with a part in the gear assembly, the part is contacted with the straight face of the gear, and the part is spaced from the conical face of the gear.
It is a further object of the present invention to provide a gear assembly comprising a gear as described above.
Further, the device also comprises a planet carrier and a base plate; wherein,
the gear is a sun gear, and the sun gear, the base plate and the planet carrier are coaxially arranged in sequence;
the straight surface of the gear is in contact connection with the backing plate, and the conical surface of the gear is arranged at intervals with the backing plate.
Compared with the prior art, the gear assembly provided by the invention has the beneficial effects, and the beneficial effects of the gear provided by the invention are compared with the prior art, so that the details are not repeated.
Another object of the present invention is to provide a rotary reduction gear comprising the gear as described above; or,
including a gear assembly as described above.
Compared with the prior art, the rotary speed reducer provided by the invention has the beneficial effects that the gear provided by the invention has the beneficial effects, or the gear assembly provided by the invention has the beneficial effects, and the details are not repeated.
Another object of the present invention is to provide a working machine, which includes the gear as described above; or,
comprising a gear assembly as described above; or,
including a slew reducer as described above.
Compared with the prior art, the engineering machine provided by the invention has the beneficial effects that the gear provided by the invention has the beneficial effects, or the gear assembly provided by the invention has the beneficial effects, or the rotary speed reducer provided by the invention has the beneficial effects, compared with the prior art, of the gear, and the construction machine is not described again.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of a gear according to an embodiment of the present invention;
FIG. 2 is a first schematic view of a gear assembly according to an embodiment of the present invention;
FIG. 3 is a second schematic view of the gear assembly according to an embodiment of the present invention;
fig. 4 is an enlarged view of a portion a in fig. 3.
In the figure:
100-sun gear; 200-backing plate;
300-a planet carrier; 101-straight surface;
102-a conical surface; 103-gear teeth.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
FIG. 1 is a schematic view of a gear according to an embodiment of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a gear, at least one end surface of which includes a straight surface 101 and a tapered surface 102, wherein the straight surface 101 and the tapered surface 102 are sequentially connected from inside to outside in a radial direction of the gear, and the tapered surface 102 is offset toward the other end surface of the gear.
The gear is applied to the gear assembly, the end face of the gear is coaxially arranged with a certain component in the gear assembly, the component is in contact with a straight face 101 of the gear, and the component is spaced from a conical face 102 of the gear, so that on the premise of ensuring strength and contact ratio, when the gear rotates relative to the adjacent component, an outer contour line of a gear tooth 103 of the gear is not in contact with the adjacent component, the contour of the gear tooth 103 of the gear cannot form abrasion to the adjacent component, furthermore, the failure probability of a rotary speed reducer applying the gear assembly is greatly reduced, and the working efficiency of the whole machine is improved.
In this embodiment, the connecting circle between the straight surface 101 and the tapered surface 102 is located within the tooth root circle of the gear.
The end face of the gear with higher relative hardness is changed into a straight face 101 and a conical face 102 connected with the straight face 101, along the radial direction of the gear, the conical face 102 of the gear inwards extends to the inner side of the tooth root of the gear tooth 103 of the gear, the conical face 102 of the gear outwards extends to the tooth top of the gear tooth 103 of the gear, no contact between a sharp arc-shaped angle formed by the tooth root of the gear tooth 103 of the gear and an adjacent part is ensured, no contact between the sharp arc-shaped angle formed by the tooth top of the gear tooth 103 of the gear and the adjacent part is ensured, no contact between a sharp contour line between the tooth top and the tooth bottom of the gear tooth 103 of the gear and the adjacent part is ensured, on the premise of ensuring the strength and the coincidence degree, the use requirement can be met, and the part which is in coaxial contact with.
In actual design, the conical surface of the gear can be designed according to the size of the gear and the structure of a part for contacting with the gear, and the extension length of the conical surface and the angle of the conical surface are specifically designed.
In this embodiment, the gear is preferably a sun gear 100, the distance between the tooth root circle and the connecting circle of the gear in the radial direction of the gear is the module of the gear, and the included angle between the conical surface 102 and the straight surface 101 is 2 °.
According to the actual application effect, the distance between the tooth root circle and the connecting circle of the gear is designed to be the modulus of the gear along the radial direction of the gear, the included angle between the conical surface and the straight surface is designed to be 2 degrees, the optimal anti-abrasion function between the outer contour of the gear tooth of the gear and the adjacent part can be realized, meanwhile, the gear can be ensured to have better strength, and the better contact ratio between the gear and the adjacent part can be ensured, so that the overall performance of the gear assembly applying the gear can be optimal.
In this embodiment, the gear is preferably a sun gear, and when in use, the sun gear, the backing plate and the planet carrier are coaxially arranged in sequence, and one end surface of the sun gear is in contact with the backing plate, so that one end surface of the sun gear comprises a straight surface and a conical surface, wherein the straight surface and the conical surface are sequentially connected from inside to outside along the radial direction of the sun gear, and the conical surface is deviated towards the other end surface of the sun gear.
In another embodiment, the gear is a common gear, the gear includes a first end face and a second end face which are oppositely arranged, and the structure of the first end face is the same as that of the second end face.
The first end face of the gear comprises a straight face and a conical face, the straight face and the conical face are sequentially connected from inside to outside along the radial direction of the gear, and the conical face deviates towards the second end face of the gear.
The second end face of the gear comprises a straight face and a conical face, wherein the straight face and the conical face are sequentially connected from inside to outside along the radial direction of the gear, and the conical face deviates towards the first end face of the gear.
Therefore, the common gear is applied to the gear assembly, the outer contours of the two sides of the gear teeth of the gear are all in non-contact with adjacent parts, the use requirements can be met on the premise of ensuring the strength and the contact ratio, and the parts on the two sides of the gear can be prevented from being abraded.
The gear provided by the embodiment of the invention is designed aiming at the structure of the gear based on the abrasion defect between the gear and the adjacent part, the gear is ensured to be in contact with the adjacent part, the adjacent part is not easy to be abraded and damaged by the outer contour of the gear teeth of the gear during relative movement, the cleanness of a cavity of the rotary speed reducer is prevented from being damaged by scrap iron generated by the abraded part, and the whole rotary speed reducer is prevented from being failed due to the function failure of the abraded part. The gear provided by the embodiment of the invention has the advantages of simple structure, no need of large investment, strong practicability, strong pertinence, strong operability and strong interchangeability, and can be used for designing conical surfaces aiming at gears of different types and the sizes of the gears so as to realize the protection of adjacent parts.
Fig. 2 is a first schematic view of a gear assembly according to an embodiment of the present invention, fig. 3 is a second schematic view of the gear assembly according to an embodiment of the present invention, and fig. 4 is an enlarged view of a portion a of fig. 3.
Another object of an embodiment of the present invention, as illustrated with reference to fig. 2 to 4, is to provide a gear assembly including a gear. Specifically, the gear is a sun gear 100, and an end surface of the sun gear 100 includes a straight surface 101 and a tapered surface 102, wherein the straight surface 101 and the tapered surface 102 are sequentially connected from inside to outside in a radial direction of the sun gear 100, and the tapered surface 102 is offset toward the other end surface of the sun gear 100.
The gear assembly further comprises a planet carrier 300 and a backing plate 200, wherein the sun gear 100, the backing plate 200 and the planet carrier 300 are coaxially arranged in sequence, the straight surface 101 of the sun gear 100 is in contact connection with the backing plate 200, and the conical surface 102 of the sun gear 100 is arranged at intervals with the backing plate 200.
In this gear assembly, the straight face 101 contact of backing plate 200 and sun gear 100, backing plate 200 and the conical surface 102 interval of sun gear 100, so, under the prerequisite of guaranteeing intensity and coincidence degree, when sun gear 100 rotates relative backing plate 200 and planet carrier 300, the outer contour line of the teeth of a cogwheel 103 of sun gear 100 and backing plate 200 contactless, the profile of the teeth of a cogwheel 103 of sun gear 100 can't constitute wearing and tearing to backing plate 200, and then, the probability that the rotary reducer of using this gear assembly became invalid reduces by a wide margin, the work efficiency of complete machine improves.
In this embodiment, the connecting circle between the straight surface 101 and the tapered surface 202 is located within the root circle of the sun gear 100.
The end face of the sun gear 100 with relatively high hardness is changed into a straight face 101 and a conical face 102 connected with the straight face 101, along the radial direction of the sun gear 100, the conical face 102 of the sun gear 100 extends inwards to the inner side of the tooth root of the gear teeth 103 of the sun gear 100, the conical face 102 of the sun gear 100 extends outwards to the tooth top of the gear teeth 103 of the sun gear 100, no contact between a sharp arc-shaped angle formed by the tooth root of the gear teeth 103 of the sun gear 100 and the backing plate 200 is ensured, no contact between the sharp arc-shaped angle formed by the tooth top of the gear teeth 103 of the sun gear 100 and the backing plate 200 is ensured, no sharp contact between a contour line between the tooth top and the tooth root of the gear teeth 103 of the sun gear 100 and the backing plate 200 is ensured, on the premise of ensuring the strength and the coincidence ratio, the use requirement can be met, and the backing plate 200 can be prevented from being.
In actual design, the tapered surface 102 of the sun gear 100 may be designed according to the size of the sun gear 100 and the specific structure of the backing plate, and the extension length of the tapered surface 102 and the angle of the tapered surface are specifically designed.
In this embodiment, preferably, in the radial direction of the sun gear 100, the distance between the root circle and the connecting circle of the sun gear 100 is the module of the sun gear 100, and the included angle between the tapered surface 102 and the straight surface 101 is 2 °.
It is deduced from the practical application effect that, along the radial direction of the sun gear 100, the distance between the tooth root circle and the connecting circle of the sun gear 100 is designed as the modulus of the sun gear 100, the included angle between the conical surface 102 and the straight surface 101 is designed to be 2 degrees, so that the sun gear 100 can be ensured to have better strength and better contact ratio between the sun gear 100 and the backing plate 200 while the best anti-abrasion function between the outer contour of the gear teeth 103 of the sun gear 100 and the backing plate 200 can be realized, and the overall performance of the gear assembly can be optimal.
According to the gear assembly provided by the embodiment of the invention, based on the abrasion defect between the sun gear 100 and the backing plate 200, the structure of the sun gear 100 is designed, the sun gear 100 is ensured to be in contact with the backing plate 200, the backing plate 200 is not easy to be abraded and damaged by the outer contour of the gear teeth 103 of the sun gear 100 during relative movement, so that scrap iron generated by the backing plate 200 is prevented from damaging the cleanliness of a cavity of the rotary speed reducer, and the whole rotary speed reducer is prevented from being failed due to the functional failure of the backing plate 200.
According to the gear assembly provided by the embodiment of the invention, the function of preventing abrasion can be realized only by specially designing the structure of the sun wheel without adding other parts, the structure is simple, the practicability is strong, the great investment is not needed, the practicability is strong, the pertinence is strong, the operability is strong, the interchangeability is strong, the design of the conical surface can be carried out according to the sizes of the sun wheels of different types and the sun wheels, and the protection of the adjacent parts is realized.
It is also an object of embodiments of the present invention to provide a rotary reduction gear that includes the above gear, or alternatively, includes the above gear assembly.
Compared with the prior art, the rotary speed reducer provided by the embodiment of the invention has the beneficial effects that the gear provided by the embodiment of the invention has the beneficial effects of the gear provided by the embodiment of the invention, or the gear assembly provided by the embodiment of the invention has the beneficial effects of the gear provided by the embodiment of the invention, and the gear assembly is not described again.
It is also an object of an embodiment of the present invention to provide a working machine including the above gear, or including the above gear assembly, or including the above rotary speed reducer.
Compared with the prior art, the engineering machine provided by the embodiment of the invention has the beneficial effects that the gear provided by the embodiment of the invention has the beneficial effects, or the gear assembly provided by the embodiment of the invention has the beneficial effects, or the rotary speed reducer provided by the embodiment of the invention has the beneficial effects, compared with the prior art, of the gear, and the rotary speed reducer provided by the embodiment of the invention has the beneficial effects, which are not repeated herein.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. A gear wheel, characterized in that at least one end face of the gear wheel comprises a straight face (101) and a conical face (102); wherein,
along the radial direction of the gear, the straight surface (101) and the conical surface (102) are sequentially connected from inside to outside, and the conical surface (102) deviates towards the other end surface of the gear.
2. Gear according to claim 1, characterized in that the connecting circle between the straight (101) and the conical (102) surface is located within the tooth root circle of the gear.
3. The gear according to claim 2, wherein a pitch between a root circle and the connecting circle of the gear in a radial direction of the gear is a module of the gear.
4. A gear wheel according to any of claims 1-3, characterized in that the angle between the conical surface (102) and the straight surface (101) is 2 °.
5. A gear wheel according to any of claims 1-3, characterised in that the two end faces of the gear wheel are of identical construction.
6. Gear according to any of claims 1-3, characterized in that it is a sun gear (100).
7. A gear assembly comprising a gear according to any of claims 1-6.
8. A gear assembly according to claim 7, further comprising a planet carrier (300) and a shim plate (200); wherein,
the gear is a sun gear (100), and the sun gear (100), the backing plate (200) and the planet carrier (300) are coaxially arranged in sequence;
the straight surface (101) of the gear is in contact connection with the backing plate (200), and the conical surface (102) of the gear is arranged at intervals with the backing plate (200).
9. A rotary reduction gear comprising the gear according to any one of claims 1 to 6; or,
comprising a gear assembly according to any of claims 7-8.
10. A working machine, characterized by comprising a gear according to any of claims 1-6; or,
comprising a gear assembly according to any one of claims 7-8; or,
comprising a slew reducer as defined in claim 9.
CN201711285893.9A 2017-12-07 2017-12-07 Gear, gear assembly, rotary reducer and engineering machinery Pending CN107830148A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711285893.9A CN107830148A (en) 2017-12-07 2017-12-07 Gear, gear assembly, rotary reducer and engineering machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711285893.9A CN107830148A (en) 2017-12-07 2017-12-07 Gear, gear assembly, rotary reducer and engineering machinery

Publications (1)

Publication Number Publication Date
CN107830148A true CN107830148A (en) 2018-03-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711285893.9A Pending CN107830148A (en) 2017-12-07 2017-12-07 Gear, gear assembly, rotary reducer and engineering machinery

Country Status (1)

Country Link
CN (1) CN107830148A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201916459U (en) * 2010-11-26 2011-08-03 徐州益利亚工程机械有限公司 Fixing system for output shaft of rotary speed reducer
CN202251816U (en) * 2011-09-23 2012-05-30 常熟市华德粉末冶金有限公司 Powder metallurgy gear
CN202851875U (en) * 2012-10-23 2013-04-03 重庆赛特尔机械有限公司 Inner annular-tooth gear for broaching gear
CN103267088A (en) * 2013-05-15 2013-08-28 南京金腾重载齿轮箱有限公司 Small-size rotary reducer for ship
CN203248665U (en) * 2013-05-16 2013-10-23 宁波东平齿轮制造有限公司 Last stage sun wheel
CN104595456A (en) * 2015-01-29 2015-05-06 台州富特传动机械有限公司 Speed change gear
CN106678333A (en) * 2015-11-05 2017-05-17 重庆克诺斯齿轮制造有限公司 Third-gear drive gear of tractor speed change box
CN207514188U (en) * 2017-12-07 2018-06-19 索特传动设备有限公司 Gear, gear assembly, rotary reducer and engineering machinery

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201916459U (en) * 2010-11-26 2011-08-03 徐州益利亚工程机械有限公司 Fixing system for output shaft of rotary speed reducer
CN202251816U (en) * 2011-09-23 2012-05-30 常熟市华德粉末冶金有限公司 Powder metallurgy gear
CN202851875U (en) * 2012-10-23 2013-04-03 重庆赛特尔机械有限公司 Inner annular-tooth gear for broaching gear
CN103267088A (en) * 2013-05-15 2013-08-28 南京金腾重载齿轮箱有限公司 Small-size rotary reducer for ship
CN203248665U (en) * 2013-05-16 2013-10-23 宁波东平齿轮制造有限公司 Last stage sun wheel
CN104595456A (en) * 2015-01-29 2015-05-06 台州富特传动机械有限公司 Speed change gear
CN106678333A (en) * 2015-11-05 2017-05-17 重庆克诺斯齿轮制造有限公司 Third-gear drive gear of tractor speed change box
CN207514188U (en) * 2017-12-07 2018-06-19 索特传动设备有限公司 Gear, gear assembly, rotary reducer and engineering machinery

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Application publication date: 20180323