Anti-stuck gear box
By installing elastic components such as springs and wear-resistant shims between the gear sets, the problem of gear seizing under water pressure was solved, and the normal operation of the gearbox was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO AMI GARDEN TOOLS IND CO LTD
- Filing Date
- 2025-08-26
- Publication Date
- 2026-07-31
AI Technical Summary
Existing gearboxes are prone to axial movement of the gear set under water pressure, which can cause the gears to seize up and affect normal operation.
Elastic components such as springs and wear-resistant pads are used between gear sets to prevent the gear sets from seizing.
It effectively prevents the gear set from seizing under water pressure, ensuring the normal operation of the gearbox.
Smart Images

Figure CN224579700U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gearbox technology, specifically to an anti-jamming gearbox. Background Technology
[0002] A gearbox, also known as a speed reducer, is a mechanical device used to change the speed ratio of power transmission in mechanical equipment. Through gear transmission, worm gear transmission, or similar methods enclosed in a rigid housing, a gear with fewer teeth on the input shaft meshes with a larger gear on the output shaft. The ratio of the number of teeth on the large and small gears achieves the purpose of reducing speed and increasing torque. However, in applications such as water pumps where the gearbox is subjected to water pressure, some gear sets may experience axial movement due to the pressure, causing them to interfere with and seize up with other gear sets, affecting normal operation. Therefore, it is crucial to develop an anti-seize gearbox that overcomes this defect. Utility Model Content
[0003] To solve at least one of the above-mentioned technical problems, this utility model provides an anti-jamming gearbox, comprising:
[0004] At least one first driving component;
[0005] At least one first gear set, wherein the first gear set is at least partially engaged with the first drive component;
[0006] At least one second gear set, wherein the second gear set at least partially meshes with the first gear set;
[0007] An elastic component is disposed on the second gear set to limit the second gear set and prevent the multi-stage gears of the first gear set and the second gear set from seizing together.
[0008] Since this invention is applicable to water shakers or other water pipe structures, the water flow will cause the gear set to move towards the impeller, which will lead to the second gear set and the impeller's drive gear seizing. Therefore, this invention implements the following method:
[0009] It also includes a gearbox housing, the first gear set including a first rotating shaft installed inside the gearbox housing, and the second gear set including a second rotating shaft installed inside the gearbox housing.
[0010] The elastic component is sleeved outside the second rotating shaft and located between the gearbox housing and the secondary gear of the second gear set. A shim is provided between the elastic component and the secondary gear of the second gear set.
[0011] Through the above technical solution, the elastic component of this utility model can resist the driving force of water flow and prevent the secondary gear and the drive gear from seizing.
[0012] The first gear set includes a first-stage gear, a third-stage gear, a fifth-stage gear, and a seventh-stage gear. Each stage of the gear set includes a first large gear and a first small gear fixed to the first large gear. The second gear set includes a second-stage gear, a fourth-stage gear, and a sixth-stage gear. Each stage of the gear set includes a second large gear and a second small gear fixed to the second large gear. The multi-stage gears of the first and second gear sets mesh sequentially in a staggered manner.
[0013] It also includes an impeller, which is connected to a drive gear. The first large gear of the primary gear meshes with the drive gear, and the drive gear drives the first large gear of the primary gear to rotate.
[0014] It also includes a fixed-axis gear, wherein the first pinion of the seven-stage gear meshes with the fixed-axis gear to cause the first gear set to rotate around the fixed-axis gear.
[0015] The elastic component is a spring. The gasket is a wear-resistant gasket.
[0016] The surfaces of the first and second large gears are provided with grooved rings, which facilitate meshing between multi-stage gears and prevent interference.
[0017] The spring is located on the side closer to the impeller.
[0018] Compared with the prior art, the advantages of this utility model are: the utility model has a simple structure and can prevent gears from seizing, thereby increasing the normal working effect of the gearbox of this utility model. Attached Figure Description
[0019] Figure 1 This is a three-dimensional cross-sectional view of the present invention;
[0020] Figure 2 This is a perspective view of the internal structure of the concealed gearbox housing of this utility model;
[0021] Figure 3 for Figure 2 Partial cross-sectional three-dimensional view;
[0022] Figure 4 Three-dimensional for gear mating parts Figure 1 ;
[0023] Figure 5 for Figure 4 Another perspective stereoscopic view;
[0024] Figure label:
[0025] 1. First driving component; 101. Impeller; 102. Drive gear; 103. Third rotating shaft;
[0026] 2. First gear set; 201. First shaft; 202. First stage gear; 203. Third stage gear; 204. Fifth stage gear; 205. Seventh stage gear; 206. First large gear; 207. First small gear;
[0027] 3. Second gear set; 301. Second shaft; 302. Second stage gear; 303. Fourth stage gear; 304. Sixth stage gear; 305. Second large gear; 306. Second small gear;
[0028] 401 Elastic component; 402 Gasket;
[0029] 5. Gearbox housing;
[0030] 601 Fixed shaft gear; 602 Fourth rotating shaft;
[0031] 7. Grooved ring;
[0032] 8. Mounting components; 801 partition. Detailed Implementation
[0033] To enable those skilled in the art to better understand this utility model and to more clearly define the scope of protection claimed by this utility model, the present utility model is described in detail below with reference to certain specific embodiments. It should be noted that the following are only some specific embodiments of the present utility model concept, and are only a part of the embodiments of this utility model. The specific and direct description of related structures is only for the convenience of understanding this utility model, and the specific features do not necessarily or directly limit the scope of implementation of this utility model.
[0034] Referring to the accompanying drawings, this utility model adopts the following technical solution: this utility model provides an anti-jamming gearbox, comprising:
[0035] At least one first driving component 1, such as the impeller 101 in this embodiment,
[0036] At least one first gear set 2, wherein the first gear set 2 is at least partially engaged with the first drive component 1;
[0037] At least one second gear set 3, wherein the second gear set 3 is at least partially meshed with the first gear set 2;
[0038] The elastic member 401 is disposed on the second gear set 3 to limit the second gear set 3 to prevent the multi-stage gears of the first gear set 2 and the second gear set 3 from contacting and seizing.
[0039] This invention transmits the power of the fixed shaft gear 601 to the drive gear 102 through the first gear set 2 and the second gear set 3, thereby controlling the rotation of the impeller 101.
[0040] Since this invention is applicable to water shakers or other water pipe structures, the water flow will cause the gear set to move towards the impeller 101, which will cause the second gear set 3 and the drive gear 102 of the impeller 101 to seize. Therefore, this invention implements the following method:
[0041] It also includes a gearbox housing 5, the first gear set 2 includes a first rotating shaft 201, which is installed inside the gearbox housing 5, and the second gear set 3 includes a second rotating shaft 301, which is installed inside the gearbox housing 5.
[0042] The elastic component 401 is sleeved outside the second rotating shaft 301 and located between the gearbox housing 5 and the secondary gear 302 of the second gear set 3. A shim 402 is provided between the elastic component 401 and the secondary gear 302 of the second gear set 3.
[0043] Through the above technical solution, the elastic component 401 of this utility model can resist the driving force of water flow and prevent the secondary gear 302 and the drive gear 102 from seizing.
[0044] The first gear set 2 includes a first-stage gear 202, a third-stage gear 203, a fifth-stage gear 204, and a seventh-stage gear 205. Each stage of the gear set includes a first large gear 206 and a first small gear 207 fixed to the first large gear 206. The second gear set 3 includes a second-stage gear 302, a fourth-stage gear 303, and a sixth-stage gear 304. Each stage of the gear set includes a second large gear 305 and a second small gear 306 fixed to the second large gear 305. The multi-stage gears of the first gear set 2 and the second gear set 3 mesh sequentially with staggered positions.
[0045] It also includes an impeller 101, which is connected to a drive gear 102. The first large gear 206 of the primary gear 202 meshes with the drive gear 102, and the drive gear 102 drives the first large gear 206 of the primary gear 202 to rotate.
[0046] It also includes a fixed shaft gear 601, wherein the first pinion 207 of the seventh gear 205 meshes with the fixed shaft gear 601 to make the first gear set rotate around the fixed shaft gear 601.
[0047] The rotation of the impeller 101 causes the drive gear 102 to drive the gear transmission of the first gear set 2 and the second gear set 3 to the fixed shaft gear 601. The first pinion 207 of the seventh gear 205 rotates around the circumference of the fixed shaft gear 601, and the gearbox housing 5 also rotates accordingly.
[0048] The elastic component 401 is a spring. The washer 402 is a wear-resistant washer 402.
[0049] The surfaces of the first large gear 206 and the second large gear 305 are provided with grooved rings 7, which facilitate meshing between multi-stage gears and prevent interference.
[0050] The spring is located on the side near the impeller 101.
[0051] Compared with the prior art, the advantages of this utility model are: the utility model has a simple structure and can prevent gears from seizing, thereby increasing the normal working effect of the gearbox of this utility model.
[0052] The drive gear 102 is fixed or integrally formed on the third rotating shaft 103. The impeller 101 is snapped into the third rotating shaft 103 through a limiting surface, or is fixed or integrally formed with the third rotating shaft 103. An installation part 8 is snapped into the housing. The third rotating shaft 103 rotates on the installation part 8. The center of the fixed shaft gear 601 is fixedly connected to the fourth rotating shaft 602. The fourth rotating shaft 602 is inserted into the installation part 8 and rotatably connected. The installation part 8 includes a partition 801. The impeller 101 is located above the partition 801, and the drive gear 102 is located below the partition 801.
[0053] The spring force must be sufficient to ensure that it does not affect the vibration of the upper and lower parts of the second gear set 3 under normal operating conditions.
[0054] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.
[0055] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0056] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.
Claims
1. A stall-proof gearbox, characterized by: include: At least one first driving component (1); At least one first gear set (2), the first gear set (2) being at least partially engaged with the first drive component (1); At least one second gear set (3), the second gear set (3) meshing at least partially with the first gear set (2); An elastic member (401) is disposed on the second gear set (3) to limit the second gear set (3) to prevent the multi-stage gears of the first gear set (2) and the second gear set (3) from seizing together.
2. The anti-stall gear case of claim 1, wherein: It also includes a gearbox housing (5), the first gear set (2) includes a first rotating shaft (201) installed inside the gearbox housing (5), and the second gear set (3) includes a second rotating shaft (301) installed inside the gearbox housing (5).
3. The anti-stall gear case of claim 2, wherein: The elastic component (401) is sleeved outside the second rotating shaft (301) and located between the gearbox housing (5) and the second gear (302) of the second gear set (3).
4. The anti-stall gear case of claim 3, wherein: A shim (402) is provided between the elastic component (401) and the secondary gear (302) of the second gear set (3).
5. The anti-stall gear case of claim 1, wherein: The first gear set (2) includes a first-stage gear (202), a third-stage gear (203), a fifth-stage gear (204) and a seventh-stage gear (205). Each stage of gear includes a first large gear (206) and a first small gear (207) fixed to the first large gear (206).
6. The anti-stall gear case of claim 5, wherein: The second gear set (3) includes a second-stage gear (302), a fourth-stage gear (303), and a sixth-stage gear (304). Each stage of gear includes a second large gear (305) and a second small gear (306) fixed to the second large gear (305). The multi-stage gears of the first gear set (2) and the second gear set (3) mesh sequentially with each other in a staggered manner.
7. The anti-stall gear case of claim 5, wherein: It also includes an impeller (101), which is connected to a drive gear (102). The first large gear (206) of the primary gear (202) meshes with the drive gear (102), and the drive gear (102) drives the first large gear (206) of the primary gear (202) to rotate.
8. The anti-stall gear case of claim 5, wherein: It also includes a fixed shaft gear (601), wherein the first pinion (207) of the seventh gear (205) meshes with the fixed shaft gear (601) to cause the first gear set (2) to rotate around the fixed shaft gear (601).
9. The anti-stall gear case of claim 1, wherein: The elastic component (401) is a spring.
10. The anti-stall gear case of claim 6, wherein: The surfaces of the first large gear (206) and the second large gear (305) are provided with grooved rings (7).