Gear box and meat grinder

Abstract

The utility model relates to the technical field of transmission structures, and particularly discloses a gear box and a meat grinder. The planetary gear structure comprises a planet carrier assembly and a plurality of planet gears rotationally mounted on the planet carrier assembly; the planet gear comprises a first gear connected with the inner wall of the box shell assembly in a meshed mode and a second gear fixedly arranged on the first gear and coaxial with the first gear. The center input wheel is located between the first gears and is provided with a first output shaft which is in transmission connection with the first gears, and the first output shaft is synchronously and rotationally connected with the planet carrier assembly; the second output shaft is connected with the second gears of the planet wheels in a meshed mode. According to the gear box and the meat grinder, the problem that an existing gear box is large in noise can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission structures, in particular to a gear box and a meat grinder. Background Art

[0002] Generally, the meat grinding function requires a higher speed, while the dough kneading function requires a lower speed. Therefore, existing meat grinders usually configure a gearbox with dual output shafts for the motor: when the meat needs to be ground, the output shaft with a higher speed is used, and when the dough needs to be kneaded, the output shaft with a lower speed is used.

[0003] As shown in patent document CN115030994A, the existing gearbox needs to adopt two planetary gear structure reduction assemblies (i.e., the primary reduction assembly and the secondary reduction assembly in the CN115030994A specification) to achieve the dual output function, and the two reduction assemblies are separated from each other and connected through an intermediate transmission structure.

[0004] In actual working engineering, the two reduction components are connected through an intermediate transmission structure, and there is a lot of noise in the intermediate transmission link.

[0005] Therefore, it is necessary to improve the existing gearbox to solve the problem of high noise.

[0006] The above information disclosed in this Background section is included only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not form the prior art that is currently known to a person of ordinary skill in the art. Utility Model Content

[0007] One purpose of the utility model is to provide a gear box and a meat grinder, which can effectively solve the problem of high noise of the existing gear box.

[0008] To achieve the above objectives, on the one hand, the utility model provides a gear box, comprising:

[0009] Box shell assembly;

[0010] A planetary gear structure, the planetary gear structure comprising a planetary carrier assembly and a plurality of planetary gears rotatably mounted on the planetary carrier assembly; wherein the planetary gear comprises a first gear meshingly connected to the inner wall of the housing assembly, and a second gear fixedly mounted on the first gear and coaxial with the first gear;

[0011] a central input wheel, the central input wheel being located between the first gears and drivingly connected to the first gears;

[0012] a first output shaft, the first output shaft being synchronously rotatably connected with the planet carrier assembly;

[0013] A second output shaft is meshedly connected with the second gear of each of the planetary gears.

[0014] Optionally, the planet carrier assembly includes a planet carrier base, a planet carrier cover fixed on the planet carrier base and coaxially arranged with the planet carrier base, and a plurality of planetary rotating shafts evenly arranged around the axis of the planet carrier base and rotatably installed between the planet carrier base and the planet carrier cover;

[0015] Wherein, one planetary gear is sleeved on each of the planetary rotating shafts.

[0016] Optionally, a transmission part drivingly connected to the first output shaft is fixedly provided on the axis of the planet carrier cover.

[0017] Optionally, the second output shaft comprises:

[0018] A gear ring portion, each of the second gears being meshingly connected with the gear ring portion;

[0019] The output part is fixed on the gear ring part and is coaxially arranged with the gear ring part.

[0020] Optionally, the output portion is provided with a shaft hole for the first output shaft to pass through.

[0021] Optionally, the box shell assembly includes a box shell base meshingly connected to each of the first gears and a box shell cover plate fastened to the box shell base;

[0022] Wherein, the box shell cover is provided with a cover hole for the output part to extend out.

[0023] Optionally, the diameter of the first gear is greater than the diameter of the second gear.

[0024] Optionally, it also includes a central input wheel located between the first gears and drivingly connected to the first gears.

[0025] On the other hand, a meat grinder is provided, comprising a motor and any one of the gear boxes described above.

[0026] The beneficial effects of the utility model are: providing a gear box and a meat grinder, when the motor drives the central input wheel to rotate, the central input wheel drives each first gear to rotate, the first gear drives the planetary carrier assembly to rotate, and then drives the first output shaft to rotate;

[0027] Since each second gear is fixedly arranged with the corresponding first gear, when each first gear rotates, it will synchronously drive each second gear to rotate around its own axis and revolve around the central input wheel. The rotation of the second gear will drive the second output shaft to rotate, thereby causing the second output shaft to rotate.

[0028] In the above process, the first gear and the second gear are fixedly arranged, and no intermediate transmission component is required between the two, so the noise caused by the intermediate transmission link can be reduced. Furthermore, the first gear and the second gear are fixedly arranged, and the connection reliability between the two is strong, which is conducive to improving the output torque of the second output shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] Figure 1 A structural schematic diagram of a meat grinder provided in an embodiment;

[0031] Figure 2 A schematic cross-sectional view of a meat grinder provided in an embodiment;

[0032] Figure 3 An exploded schematic diagram of a meat grinder provided in an embodiment;

[0033] Figure 4 An exploded schematic diagram of a planetary gear structure provided in an embodiment.

[0034] In the figure:

[0035] 100. Motor;

[0036] 1. Box shell assembly; 101. Box shell base; 102. Box shell cover; 1021. Cover hole;

[0037] 2. Planetary gear structure;

[0038] 201, planetary carrier assembly; 2011, planetary carrier base; 2012, planetary carrier cover; 2013, transmission part; 2014, planetary shaft;

[0039] 202, planetary gear; 2021, first gear; 2022, second gear;

[0040] 3. Center input wheel;

[0041] 4. First output shaft;

[0042] 5. Second output shaft; 501. Gear ring portion; 502. Output portion; 5021. Shaft through hole. DETAILED DESCRIPTION

[0043] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the embodiment described below is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] In the description of the present utility model, it is to be understood that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centrally arranged component at the same time.

[0045] In addition, terms such as "long", "short", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention. They do not indicate or imply that the device or component referred to must have this specific direction or operate with a specific direction structure, and should not be understood as a limitation of the present invention.

[0046] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0047] The utility model provides a gear box and a meat grinder, which are suitable for application scenarios with two output speeds of meat grinding and dough kneading, and can effectively solve the problem of high noise in existing gear boxes.

[0048] See also Figure 1 The meat grinder provided in this embodiment includes a motor 100 and a gear box.

[0049] The gearbox includes a housing assembly 1 , a planetary gear structure 2 , a central input wheel 3 , a first output shaft 4 , and a second output shaft 5 .

[0050] The planetary gear structure 2 includes a planetary carrier assembly 201 and a plurality of planetary gears 202 rotatably mounted on the planetary carrier assembly 201. The planetary carrier assembly 201 includes a planetary carrier base 2011, a planetary carrier cover 2012 fixed to the planetary carrier base 2011 and coaxially arranged with the planetary carrier base 2011, and a plurality of planetary shafts 2014 evenly arranged around the axis of the planetary carrier base 2011 and rotatably mounted between the planetary carrier base 2011 and the planetary carrier cover 2012; wherein each of the planetary shafts 2014 is sleeved with one of the planetary gears 202.

[0051] Furthermore, a transmission part 2013 which is transmission-connected to the first output shaft 4 is fixedly provided on the axis of the planet carrier cover 2012 , so that the first output shaft 4 is rotationally connected to the planet carrier assembly 201 in a synchronous manner.

[0052] The planetary gear 202 includes a first gear 2021 meshingly connected to the inner wall of the housing assembly 1, and a second gear 2022 fixed on the first gear 2021 and coaxial with the first gear 2021; the center input wheel 3 is located between the first gears 2021 and is transmission-connected to the first gears 2021, and the output shaft of the motor 100 extends into the gear box and is connected to the center input wheel 3. When the motor 100 is started, the center input wheel 3 can be driven to rotate, thereby driving each first gear 2021 to rotate.

[0053] The second output shaft 5 is meshedly connected with the second gear 2022 of each of the planetary gears 202. Specifically, the second output shaft 5 includes a gear ring portion 501 and an output portion 502. Each of the second gears 2022 is meshedly connected with the gear ring portion 501; the output portion 502 is fixedly mounted on the gear ring portion 501 and is coaxially arranged with the gear ring portion 501. The output portion 502 is provided with an axial hole 5021 for the first output shaft 4 to pass through, so that a meat grinder or the like can be mounted on the first output shaft 4.

[0054] Furthermore, the box shell assembly 1 includes a box shell base 101 meshingly connected to each of the first gears 2021 and a box shell cover 102 fastened to the box shell base 101; wherein, the box shell cover 102 is provided with a cover hole 1021 for the output part 502 to extend out, so that the dough kneading tools etc. can be installed on the second output shaft 5.

[0055] In the gearbox and meat grinder provided in this embodiment, when the motor 100 drives the central input wheel 3 to rotate, the central input wheel 3 drives each first gear 2021 to rotate, and the first gear 2021 drives the planetary carrier assembly 201 to rotate, thereby driving the first output shaft 4 to rotate;

[0056] Since each second gear 2022 is fixedly arranged with the corresponding first gear 2021, when each first gear 2021 rotates, it will synchronously drive each second gear 2022 to rotate around its own axis and revolve around the central input wheel 3, and the rotation of the second gear 2022 will drive the second output shaft 5 to rotate, thereby causing the second output shaft 5 to rotate. Optionally, the diameter of the first gear 2021 is larger than the diameter of the second gear 2022, so as to reduce the speed of the second output shaft 5 and meet the needs of dough;

[0057] In the above process, the first gear 2021 and the second gear 2022 are fixedly arranged, and no intermediate transmission part 2013 is required between the two, so the noise caused by the intermediate transmission link can be reduced. Further, the first gear 2021 and the second gear 2022 are fixedly arranged, and the connection reliability between the two is strong, which is conducive to improving the output torque of the second output shaft 5.

[0058] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0059] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A gear box, characterized in that: include: Box shell assembly (1); A planetary gear structure (2), the planetary gear structure (2) comprising a planetary carrier assembly (201) and a plurality of planetary gears (202) rotatably mounted on the planetary carrier assembly (201); wherein the planetary gears (202) comprise a first gear (2021) meshingly connected to an inner wall of the housing assembly (1), and a second gear (2022) fixedly mounted on the first gear (2021) and coaxial with the first gear (2021); a central input wheel (3), the central input wheel (3) being located between each of the first gears (2021) and being drivingly connected to each of the first gears (2021); A first output shaft (4), the first output shaft (4) being connected to the planet carrier assembly (201) for synchronous rotation; A second output shaft (5), the second output shaft (5) being meshingly connected to the second gear (2022) of each of the planetary gears (202).

2. The gearbox according to claim 1, characterized in that: The planet carrier assembly (201) comprises a planet carrier base (2011), a planet carrier cover (212) fixedly mounted on the planet carrier base (2011) and coaxially arranged with the planet carrier base (2011), and a plurality of planetary rotating shafts (2014) evenly arranged around the axis of the planet carrier base (2011) and rotatably mounted between the planet carrier base (2011) and the planet carrier cover (2012); Wherein, one planetary gear (202) is sleeved on each of the planetary rotating shafts (214).

3. The gearbox according to claim 2, characterized in that: A transmission part (2013) is fixedly provided on the axis of the planet carrier cover (2012) and is transmission-connected to the first output shaft (4).

4. The gearbox according to claim 1, characterized in that: The second output shaft (5) comprises: A gear ring portion (501), each of the second gears (2022) being meshingly connected to the gear ring portion (501); An output portion (502), the output portion (502) being fixedly mounted on the gear ring portion (501) and being coaxially arranged with the gear ring portion (501).

5. The gearbox according to claim 4, characterized in that: The output portion (502) is provided with a shaft-through hole (5021) for the first output shaft (4) to pass through.

6. The gearbox according to claim 5, characterized in that: The box shell assembly (1) comprises a box shell base (101) meshingly connected to each of the first gears (2021) and a box shell cover plate (102) fastened to the box shell base (101); Wherein, the box shell cover (102) is provided with a cover hole (1021) for the output portion (502) to extend out.

7. The gearbox according to claim 1, characterized in that: The diameter of the first gear (2021) is greater than the diameter of the second gear (2022).

8. The gearbox according to claim 1, characterized in that: It also includes a central input wheel (3) located between each of the first gears (2021) and drivingly connected to each of the first gears (2021).

9. A meat grinder, characterized in that: It comprises a motor (100) and a gearbox as claimed in any one of claims 1 to 8.

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