CN115750727A - Noise reduction gear and engine - Google Patents
Noise reduction gear and engine Download PDFInfo
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- CN115750727A CN115750727A CN202211260220.9A CN202211260220A CN115750727A CN 115750727 A CN115750727 A CN 115750727A CN 202211260220 A CN202211260220 A CN 202211260220A CN 115750727 A CN115750727 A CN 115750727A
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Abstract
The invention belongs to the technical field of engines, and particularly relates to a noise reduction gear and an engine. The noise reduction gear comprises a first gear and a second gear which have the same modulus and tooth number, and also comprises an adjusting component, the second gear is sleeved on the first gear, the gear teeth of the second gear and the gear teeth of the first gear are arranged in a staggered angle in the circumferential direction, the adjusting component is connected with the first gear, and the adjusting component is connected with the second gear; the adjustment assembly is configured to adjust the stagger angle and to adjust the distance between the first and second gears when the first and second gears are rotated relative to each other. According to the invention, the first gear and the second gear are separated from each other by adopting the adjusting assembly to eliminate the backlash between the gears, so that the collision impact generated during the meshing in the initial stage is avoided, the noise generated by an engine is reduced, a rubber sleeve in the prior art is not required, the rubber sleeve is prevented from being cracked or losing elasticity due to repeated extrusion and stress, and the service life of the noise reduction gear is prolonged.
Description
Technical Field
The invention belongs to the technical field of engines, and particularly relates to a noise reduction gear and an engine.
Background
This section provides background information related to the present disclosure only and is not necessarily prior art.
The gear transmission process of the engine can be heated and expanded, errors and other factors exist during actual machining and assembling, a proper gear backlash is reserved in a manual adjustment mode during gear machining, and the problem that the gears are interfered by tooth surfaces and even clamped when working due to the reasons of thermal expansion, eccentric installation and the like, so that transmission failure is caused is avoided. When the gear teeth transmit torque, due to the fact that gear backlash exists between gears of the gear pair and meshing is not smooth, collision impact is generated during meshing in the initial stage, and the accessory driven by the gear bears certain impact load during colleagues acquiring power, and noise generated by an engine is large.
The noise reduction gear in the prior art generally comprises a first gear, a second gear and a pin, wherein the pin can penetrate through the first gear and the second gear to realize the connection of the first gear and the second gear, so that the first gear and the second gear are used as a composite gear and are used for being meshed with a transmission gear for transmission. The rubber sleeve is sleeved outside the pin, a certain angle is staggered between the first gear and the second gear by means of the elastic action of the rubber sleeve, the first gear and the second gear are attached to the transmission gear respectively, and therefore the backlash between the gears is eliminated.
By adopting the mode, the return of the second gear needs to be ensured by the elasticity of the rubber sleeve, but the rubber sleeve is repeatedly extruded and stressed in the working process, the rubber sleeve is easily cracked and damaged or loses elasticity, the effective service life of the rubber sleeve is shorter, and therefore the backlash eliminating effect is influenced. Meanwhile, the rigidity of the rubber sleeve cannot be evaluated, and if the rigidity is too high, the situation that a transmission gear is blocked due to thermal expansion is easily caused, and the normal work of a gear transmission pair cannot be guaranteed.
Disclosure of Invention
The invention aims to at least solve the problem that the effective service life of the noise reduction gear in the prior art is short. The purpose is realized by the following technical scheme:
the invention provides a noise reduction gear, which comprises a first gear and a second gear, wherein the modulus and the tooth number of the first gear are the same, the second gear is sleeved on the first gear, the gear teeth of the second gear and the gear teeth of the first gear are arranged in a staggered angle in the circumferential direction, and the noise reduction gear further comprises:
the adjusting assembly is connected with the first gear, and the adjusting assembly is connected with the second gear;
the adjustment assembly is configured to adjust the stagger angle and to adjust the distance between the first gear and the second gear when the first gear and the second gear are rotated relative to each other.
According to the noise reduction gear, the first gear and the second gear are separated from each other by the adjusting assembly to eliminate the backlash between the gears, so that collision impact during meshing in an initial stage is avoided, noise generated by an engine is reduced, a rubber sleeve in the prior art is not needed, and the phenomenon that the rubber sleeve is cracked or loses elasticity due to repeated extrusion stress is avoided, so that the service life of the noise reduction gear is prolonged.
In addition, the noise reduction gear according to the invention can also have the following additional technical characteristics:
in some embodiments of the invention, the adjustment assembly comprises a first adjustment portion and a second adjustment portion;
the first adjusting portion is arranged on the first gear, the second adjusting portion is arranged on the second gear, and the first adjusting portion is abutted to the second adjusting portion.
In some embodiments of the present invention, the first gear is provided with a first mounting hole, a first fastening member is provided in the first mounting hole, and the first adjusting portion is fixed to the first fastening member;
the second gear is provided with a second mounting hole, a second fastening piece is arranged in the second mounting hole, and the second adjusting part is fixedly connected to the second fastening piece;
the first mounting hole and the second mounting hole are oppositely arranged.
In some embodiments of the invention, the first adjustment portion is a first wedge block comprising a first work surface;
the second adjusting part is a second wedge-shaped block, and the second wedge-shaped block comprises a second working surface;
the first working surface is abutted against the second working surface.
In some embodiments of the invention, the first working surface and the second working surface are both beveled.
In some embodiments of the invention, the first wedge block further comprises a first mating surface that mates with the arc portion of the first gear;
the second wedge block further comprises a second matching surface, and the second matching surface is matched with the arc portion of the second gear.
In some embodiments of the present invention, a boss is disposed on the gear disc of the first gear around the first shaft hole, and the second gear is sleeved on the boss and can rotate relative to the boss.
In some embodiments of the invention, the adjustment assembly further comprises a reset member;
the boss is provided with a groove, the resetting piece is arranged in the groove, the resetting piece has pretightening force, and the first gear and the second gear are tightly pressed through the pretightening force.
In some embodiments of the present invention, the return member is a belleville spring.
A second aspect of the present invention provides an engine comprising a noise reducing gear as described in the above embodiments.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:
fig. 1 schematically shows an overall structural view of a noise reduction gear according to an embodiment of the present invention (teeth of a first gear and teeth of a second gear are arranged at a staggered angle);
FIG. 2 isbase:Sub>A schematic view of the section A-A in FIG. 1;
FIG. 3 is a schematic structural view of section B-B in FIG. 1;
FIG. 4 is an enlarged view of a portion of FIG. 1 at C;
FIG. 5 is an exploded view of the noise reduction gear of FIG. 1;
fig. 6 is a schematic view illustrating an assembled structure of the first gear and the first adjusting portion shown in fig. 1;
FIG. 7 is a schematic view of the first gear and the first adjustment part shown in FIG. 6, shown in a second perspective;
fig. 8 is a structural view illustrating the first gear and the first adjusting portion shown in fig. 6 in an assembled state;
FIG. 9 is a cross-sectional view taken along section D-D of FIG. 8;
FIG. 10 is a schematic view of the first gear and the first adjustment part shown in FIG. 8 from a second perspective;
FIG. 11 is a schematic structural view of the first adjustment part in FIG. 6;
FIG. 12 is a second perspective view of the first adjustment part shown in FIG. 6;
FIG. 13 is a schematic view of the overall configuration of the noise reduction gear shown in FIG. 1 (with the teeth of the first gear and the teeth of the second gear overlapping);
fig. 14 is a cross-sectional view taken along section E-E of fig. 13.
The reference numbers are as follows:
100 is a noise reduction gear;
10 is a first gear; 11 is a first mounting hole; 12 is a boss; 121 is a groove; 13 is a first shaft hole; 14 is a first arc part; 15 is a staggered surface;
20 is a second gear; 21 is a second mounting hole; 22 is a second shaft hole;
30 is an adjusting component; 31 is a first regulating part; 311 is a first working surface; 312 is a first mating surface; 32 is a second regulating part; 321 is a second working surface; 322 is a second mating surface;
40 is a first fastener;
50 is a second fastener;
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience in description, the relationship of one element or feature to another element or feature as illustrated in the figures may be described herein using spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "over", and the like. This spatially relative term is intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "at 8230; \8230; below" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1 to 14, according to an embodiment of the present invention, there is provided a noise reduction gear 100, including a first gear 10 and a second gear 20 having the same module and number of teeth, the second gear 20 is sleeved on the first gear 10, and teeth of the second gear 20 and teeth of the first gear 10 are arranged at a staggered angle in a circumferential direction, in fig. 1, teeth of the first gear 10 and teeth of the second gear 20 of the noise reduction gear 100 are arranged at a staggered angle, the noise reduction gear 100 further includes an adjusting assembly 30, the adjusting assembly 30 is connected to the first gear 10 and is connected to the second gear 20, the adjusting assembly 30 is located between the first gear 10 and the second gear 20, when the first gear 10 and the second gear 20 rotate relatively, the staggered angle is changed by the adjusting assembly 30, and a distance between the first gear 10 and the second gear 20 can be adjusted, that is, the adjusting assembly 30 can enable the first gear 10 and the second gear 20 to be far away from each other or close to each other.
According to the noise reduction gear 100, the adjusting assembly 30 is adopted to enable the first gear 10 and the second gear 20 to be mutually far away to eliminate the backlash between the gears, so that collision impact during meshing in the initial stage is avoided, noise generated by an engine is reduced, a rubber sleeve in the prior art is not needed, the phenomenon that the rubber sleeve is cracked or loses elasticity due to repeated extrusion and stress is avoided, and the service life of the noise reduction gear 100 is prolonged.
It should be explained that the teeth of the first gear 10 and the teeth of the second gear 20 of the noise reduction gear 100 are arranged at a staggered angle, when the first gear 10 and the second gear 20 are far away from each other, the staggered angle between the teeth of the first gear 10 and the teeth of the second gear 20 becomes gradually smaller, when the teeth of the first gear 10 and the teeth of the second gear 20 are overlapped with each other, the staggered angle is zero, the tooth side gap reserved for processing is eliminated at this time, and the noise generated when the engine moves is reduced.
As shown in fig. 1 to 4, at this time, the noise reduction gear 100 is in an initial state, that is, the teeth of the first gear 10 and the teeth of the second gear 20 are arranged at a staggered angle, that is, a part of the surface of the first gear 10 facing the second gear 20 is the staggered surface 15, and when the staggered angle changes, the size of the staggered surface 15 also changes, the staggered angle increases, and the area of the staggered surface 15 also increases.
Here, a partial surface of the first gear 10 is used as the offset surface 15, and a partial surface of the second gear 20 may be selected as the offset surface 15 as needed, and whether the surface of the first gear 10 or the surface of the second gear 20 is selected to be substantially uniform, the offset distance may be used to measure the degree of offset between the teeth of the first gear 10 and the second gear 20, or the thickness or width of the noise reduction gear 100 may be used to measure the degree of offset between the teeth of the first gear 10 and the second gear 20.
In some alternative embodiments, the adjustment assembly 30 includes a first adjustment portion 31 and a second adjustment portion 32; the first adjustment portion 31 is disposed on the first gear 10, the second adjustment portion 32 is disposed on the second gear 20, and the first adjustment portion 31 and the second adjustment portion 32 are abutted.
Wherein the first gear 10 and the second gear 20 are moved away from each other by the interaction between the first adjusting portion 31 and the second adjusting portion 32.
The number of the first adjusting portions 31 is one or more, and the number of the second adjusting portions 32 is the same as the number of the first adjusting portions 31. In the present invention, as shown in fig. 5, the number of the first adjusting portions 31 and the number of the second adjusting portions 32 are three, and three first adjusting portions 31 are arranged along the circumferential direction of the toothed disc of the first gear 10 at intervals, three second adjusting portions 32 are arranged along the circumferential direction of the toothed disc of the second gear 20 at intervals, and each first adjusting portion 31 and the corresponding second adjusting portion 32 are arranged in contrast to form three contact surfaces, where the intervals are usually arranged at regular intervals, that is, the angle between two adjacent first adjusting portions 31 is 120 degrees, and similarly, the angle between two adjacent second adjusting portions 32 is also 120 degrees, and each first adjusting portion 31 has one second adjusting portion 32 matching with each other.
The number of the first adjusting portions 31 may also be two, four or more, and the number of the corresponding second adjusting portions 32 is the same as the number of the first adjusting portions 31, which is not described herein again.
In some alternative embodiments, the first gear 10 is provided with a first mounting hole 11, a first fastening member 40 is provided in the first mounting hole 11, and the first adjusting portion 31 is fixed to the first fastening member 40; the second gear 20 is provided with a second mounting hole 21, a second fastening piece 50 is arranged in the second mounting hole 21, and the second adjusting part 32 is fixedly connected to the second fastening piece 50; the first mounting hole 11 and the second mounting hole 21 are oppositely disposed.
It should be noted that the shape of the first mounting hole 11 and the shape and size of the first fastening member 40 are matched, for example, the first mounting hole 11 is a circular through hole, and the first fastening member 40 is cylindrical; the second mounting hole 21 and the second fastening member 50 are adapted to each other in shape and size, for example, the second mounting hole 21 is a circular through hole, and the second fastening member 50 is a cylinder, but the first fastening member 40 and the second fastening member 50 may also be other shapes, such as a truncated cone shape or a rectangular column shape.
In addition, the first fastener 40 and the second fastener 50 may be formed of a dowel or the like.
In addition, here, the first adjustment portion 31 is provided with a through hole to allow the first fastening member 40 to pass therethrough, and the second adjustment portion 32 is also provided with a through hole to allow the second fastening member 50 to pass therethrough.
In some alternative embodiments, the first adjustment portion 31 is a first wedge block, which includes a first working surface 311; the second adjusting portion 32 is a second wedge-shaped block, which includes a second working surface 321; the first working surface 311 and the second working surface 321 are oppositely disposed. The first fastener 40 passes through the first working surface 311 and the second fastener 50 passes through the second working surface 321.
The first working surface 311 and the second working surface 321 are contact portions between the first adjusting portion 31 and the second adjusting portion 32, and the distance between the first gear 10 and the second gear 20 is adjusted by variation of a contact area between the first working surface 311 and the second working surface 321, wherein when the contact area between the first gear 10 and the second gear 20 is the largest, the distance between the first gear 10 and the second gear 20 is the smallest, and when the contact area between the first gear 10 and the second gear 20 is the smallest, the distance between the second gear 20 and the second gear 20 is the largest.
In some alternative embodiments, the first working surface 311 and the second working surface 321 are mutually matched working surfaces, the first working surface 311 may be a convex surface, and the second working surface 321 is a matched concave surface; alternatively, the first working surface 311 is concave and the second working surface 321 is suitably convex.
For the sake of simple processing, the first working surface 311 and the second working surface 321 may be both inclined surfaces, that is, the first working surface 311 and the second working surface 321 are both inclined planes, so that when the first gear 10 and the second gear 20 rotate, the first working surface 311 and the second working surface 321 rotate relatively.
In some optional embodiments, the first wedge block further includes a first mating surface 312, the first mating surface 312 is mated with the arc portion of the first gear 10, the arc portion of the first gear 10 is referred to as a first arc portion 14, the second wedge block further includes a second mating surface 322, the second mating surface 322 is mated with the arc portion of the second gear 20, the arc portion of the second gear 20 and the first arc portion 14 are arranged in the same manner, and details of the arc portion of the second gear 20 are not repeated here.
As can be seen from fig. 5, 6 and 7, the first arc portion 14 is arranged in a circular ring shape, and the first matching surface 312 contacts with the inner arc surface of the first arc portion 14, so that the first adjusting portion 31 is conveniently installed. Similarly, the arc portion of the second gear 20 is also arc-shaped, and the second matching surface 322 contacts with the inner arc surface of the arc portion of the second gear 20, so as to facilitate the installation of the second adjusting portion 32.
It should be noted that the first engagement surface 312 and the second engagement surface 322 are both arc-shaped surfaces and are respectively identical to the radian and the size of the arc portion that is engaged with each other, that is, the radian of the first engagement surface 312 is identical to the radian of the first arc portion 14, and the radius is identical to each other.
In some alternative embodiments, the toothed disc of the first gear 10 is provided with a boss 12 around the first shaft hole 13, and the second gear 20 is sleeved on the boss 12 of the first gear 10 and can rotate relative to the boss 12. By providing the boss 12, the connection between the second gear 20 and the first gear 10 can be achieved.
It should be noted that the first shaft hole 13 is disposed through the boss 12, and an axial direction of the first shaft hole 13 and an axial direction of the boss 12 are on the same line, which facilitates the installation of the noise reduction gear 100.
In some alternative embodiments, noise reduction gear 100 further includes a reset 60; the boss 12 is provided with a groove 121, the reset piece 60 is arranged in the groove 121, and the reset piece 60 has a pretightening force, so that the first gear 10 and the second gear 20 are pressed tightly by the pretightening force. The returning member 60 may be a belleville spring, or may be a spring having another shape as long as the returning can be achieved.
Through setting up the piece 60 that resets, can make the moment that noise reduction gear 100 received zero, compress tightly second gear 20 through piece 60 that resets for second regulating part 32 and first regulating part 31 rotate and return to initial state, make the distance between first gear 10 and second gear 20 diminish, and the angle of staggering between the teeth of a cogwheel of first gear 10 and the teeth of a cogwheel of second gear 20 grow.
It should be noted that the recess 121 is generally circular and has a U-shaped cross section, such that the reset element 60 is partially disposed in the recess 121.
In some optional embodiments, the first gear 10 further includes a first shaft hole 13, the first shaft hole 13 is a circular through hole, the second gear 20 includes a second shaft hole 22, and the second shaft hole 22 is a circular through hole, where the gear is provided with a shaft hole which is a common structure in the prior art, and the description is not repeated here.
It should be noted that the diameter of the second shaft hole 22 of the second gear 20 is adapted to the outer diameter of the boss 12, so that the inner annular surface of the second gear 20 contacts the outer surface of the boss 12.
The following describes the assembly method of the noise reduction gear 100 in the present invention, taking three first fasteners 40 and three second fasteners 50 as an example, specifically:
s1, respectively installing each first fastener 40 in a through hole of the first adjusting part 31, and installing each second fastener 50 in a through hole of the second adjusting part 32;
here, the first fastening member 40 and the first adjustment portion 31 are assembled by interference, and the second fastening member 50 and the second adjustment portion 32 are assembled by interference.
S2, respectively installing the first fasteners 40 with the first adjusting parts 31 into the first mounting holes 11, and respectively rotating the second fasteners 50 with the second adjusting parts 32 into the second mounting holes 21;
the second gear 20 is assembled with the second gear 20 such that the first working surfaces 311 of the three first regulating parts 31 are respectively engaged with the second working surfaces 321 of the three second regulating parts 32;
and S3, installing the resetting element 60 in the groove 121 of the first gear 10, wherein the noise reduction gear 100 after assembly is as shown in FIGS. 1 to 4, and the gear teeth of the first gear 10 and the gear teeth of the second gear 20 are arranged at staggered angles in the free state of the noise reduction gear 100.
S1 and S2 in the above process do not represent the sequence, and the sequence S1 and S2 may be interchanged.
In S2, the first engagement surface 312 of the assembled first adjustment part 31 contacts the first arc portion 14 of the first gear 10, and the second engagement surface 322 of the assembled second adjustment part 32 contacts the arc portion of the second gear 20.
The specific working process of the noise reduction gear 100 in the present invention is as follows:
after the assembled noise reduction gear 100 is assembled on an engine, the noise reduction gear 100 is meshed with a transmission gear, when the noise reduction gear 100 transmits torque, tooth surfaces of the first gear 10 and the second gear 20 are pressed, relative rotation occurs between the first gear 10 and the second gear 20, the staggered angle of the tooth surfaces of the first gear 10 and the tooth surfaces of the second gear 20 is reduced to be overlapped, meanwhile, the first adjusting part 31 which is in interference fit on the first gear 10 rotates along with the first gear 10, and the second adjusting part 32 which is in interference fit on the second gear 20 rotates along with the second gear 20, as a contact surface between the first adjusting part 31 and the second adjusting part 32 is an inclined surface, when the first adjusting part 31 and the second adjusting part 32 are staggered, an axial relative displacement is generated between the first gear 10 and the second gear 20, the distance between the first gear 10 and the second gear 20 is increased, the reset member 60 is deformed by force, and the elastic force is increased, and the state is as shown in fig. 13 and 14.
When the torque received by the noise reduction gear 100 becomes smaller or zero, the second gear 20 is pressed by the restoring member 60, so that the second adjusting part 32 and the first adjusting part 31 rotate relatively, the distance between the first gear 10 and the second gear 20 becomes smaller, and the staggered angle between the teeth of the first gear 10 and the teeth of the second gear 20 becomes larger, and the original state, that is, the state shown in fig. 4, is restored.
When the noise reduction gear 100 transmits torque again, the above process is repeated, so that the noise reduction gear 100 is used for multiple times, in each use process, the staggered angle between the gear teeth of the first gear 10 and the gear teeth of the second gear 20 can be reduced, the distance between the first gear 10 and the second gear 20 is increased, the tooth side clearance reserved in machining is eliminated, the noise generated when an engine moves is reduced, and the service life of the noise reduction gear 100 is prolonged.
The reset member 60, the first adjusting portion 31 and the second adjusting portion 32 in the present invention can be made of metal members with relatively high strength, for example, heat-resistant steel, which has a long service life, can repeatedly bear impact, and is resistant to high temperature and oil, thereby increasing the service life of the noise reduction gear 100.
In a second aspect of an embodiment of the present invention, there is provided an engine comprising the noise reduction gear 100 mentioned in the above embodiment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a gear of making an uproar falls, includes first gear and the second gear that modulus and number of teeth all are the same, the second gear cover is located on the first gear, just the teeth of a cogwheel of second gear with the teeth of a cogwheel of first gear is the angle setting of staggering in circumference, a serial communication port, the gear of making an uproar still includes:
the adjusting assembly is connected with the first gear, and the adjusting assembly is connected with the second gear;
the adjustment assembly is configured to adjust the stagger angle and to adjust the distance between the first gear and the second gear when the first gear and the second gear are rotated relative to each other.
2. The noise reducing gear of claim 1, wherein the adjustment assembly comprises a first adjustment portion and a second adjustment portion;
the first adjusting portion is arranged on the first gear, the second adjusting portion is arranged on the second gear, and the first adjusting portion is abutted to the second adjusting portion.
3. The noise reduction gear according to claim 2, wherein the first gear is provided with a first mounting hole, a first fastening piece is arranged in the first mounting hole, and the first adjusting portion is fixedly connected to the first fastening piece;
the second gear is provided with a second mounting hole, a second fastening piece is arranged in the second mounting hole, and the second adjusting part is fixedly connected to the second fastening piece;
the first mounting hole and the second mounting hole are oppositely arranged.
4. The noise reducing gear of claim 2 or 3, wherein the first adjustment portion is a first wedge block comprising a first working face;
the second adjusting part is a second wedge-shaped block, and the second wedge-shaped block comprises a second working surface;
the first working surface is abutted against the second working surface.
5. The noise reducing gear of claim 4, wherein the first working surface and the second working surface are both beveled.
6. The noise reducing gear of claim 4, wherein the first wedge block further comprises a first mating surface that mates with the circular arc of the first gear;
the second wedge block further comprises a second matching surface, and the second matching surface is matched with the arc portion of the second gear.
7. The noise reduction gear according to claim 3, wherein a boss is provided on the gear disc of the first gear around the first shaft hole, and the second gear is sleeved on the boss and can rotate relative to the boss.
8. The noise reducing gear of claim 7, wherein the adjustment assembly further comprises a reset;
the boss is provided with a groove, and the resetting piece is arranged in the groove;
the resetting piece has a pretightening force, and the first gear and the second gear are tightly pressed through the pretightening force.
9. The noise reducing gear of claim 8, wherein the reset member is a belleville spring.
10. An engine comprising a noise reducing gear according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211260220.9A CN115750727A (en) | 2022-10-14 | 2022-10-14 | Noise reduction gear and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211260220.9A CN115750727A (en) | 2022-10-14 | 2022-10-14 | Noise reduction gear and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115750727A true CN115750727A (en) | 2023-03-07 |
Family
ID=85351459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211260220.9A Pending CN115750727A (en) | 2022-10-14 | 2022-10-14 | Noise reduction gear and engine |
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| Country | Link |
|---|---|
| CN (1) | CN115750727A (en) |
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2022
- 2022-10-14 CN CN202211260220.9A patent/CN115750727A/en active Pending
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