Oil-saving lubricating speed reducer

Abstract

The oil-saving lubricating speed reducer comprises a motor shell, a front end cover, a rear end cover, a stator, a rotor iron core, a rotating shaft, a worm, a worm wheel and a gear box, the front end cover and the rear end cover are installed at the front end and the rear end of the motor shell, the rotating shaft is rotationally arranged in the motor shell, the rotor iron core is arranged on the outer side of the middle of the rotating shaft, and the worm wheel is arranged on the outer side of the middle of the rotating shaft. A stator is arranged on the outer side of the rotor core, one end of the rotating shaft is connected with a worm, the worm extends into a gear box, one end of the gear box is fixedly connected with the rear end cover, a worm gear is rotationally arranged in the gear box and meshed with the worm, a plurality of gear teeth are arranged on the circumferential surface of the worm gear, and the gear teeth are meshed with the worm. An oil accumulation groove is formed in the area, between every two adjacent gear teeth, of the circumferential surface of the worm gear and is of a concave structure. According to the scheme, consumption of lubricating oil in the speed reducer can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of speed reducers, and particularly relates to an oil-saving lubricating speed reducer. Background Art

[0002] A worm and worm gear speed reducer, also known as a worm and worm wheel speed reducer or a turbine worm speed reducer, is a mechanical device that realizes speed reduction through the interaction of a worm and a worm wheel. At present, common worm and worm gear speed reducers mainly lubricate the worm and worm wheel installed inside the machine through lubricating oil. The worm and the worm wheel are meshed to form a speed reduction mechanism, and both ends of the worm are movably connected to the inside of the machine through bearings. The existing lubrication system of the turbine speed reducer relies on the rotation of the turbine and worm to bring the lubricating oil between the meshing gears for lubrication.

[0003] Chinese Patent with application number 2022228227726 discloses a lubricating oil adding mechanism for a worm and worm gear speed reducer. The device includes a rigid housing, inside which there is the speed reducer mechanism. Below the speed reducer mechanism, there is an oil draining mechanism and an oil adding mechanism, which is located above the speed reducer mechanism. Below the oil adding mechanism, there is the disassembly mechanism. This lubricating oil adding mechanism for a worm and worm gear speed reducer automatically adds oil to the inside of the speed reducer by arranging an oil receiving plate connected by a spring at the bottom of the speed reducer, so that the oil storage box can add oil automatically.

[0004] In the above solution, by arranging an oil receiving plate connected by a spring at the bottom of the speed reducer, when lubricating oil is poured into the device, the excess lubricating oil will fall to the bottom of the device. During the rotation of the worm wheel, it comes into contact with the lubricating oil at the bottom, so that there is always lubricating oil on the worm wheel, thereby achieving smooth transmission with the worm. However, when the worm wheel comes into contact with the lubricating oil, it adheres a certain amount of lubricating oil on the tooth surface and then contacts the surface of the worm. The tooth surface is a smooth structure, and the amount of lubricating oil it can adhere is limited. Therefore, it is difficult to transfer the lubricating oil on the teeth of the worm wheel to the worm, and the lubrication effect is limited. It is necessary to additionally add lubricating oil to the surface of the worm to truly achieve smooth transmission between the worm wheel and the worm. Summary of the Utility Model

[0005] To solve the above problems, the present utility model provides an oil-saving lubricating speed reducer, which includes a motor housing, a front end cover, a rear end cover, a stator, a rotor core, a rotating shaft, a worm, a worm gear and a gear box. The front end cover and the rear end cover are installed at the front and rear ends of the motor housing. The rotating shaft is rotatably arranged inside the motor housing. A rotor core is arranged on the outer side of the middle of the rotating shaft. A stator is arranged on the outer side of the rotor core. One end of the rotating shaft is connected with a worm, and the worm extends into the gear box. One end of the gear box is fixedly connected with the rear end cover. A worm gear is rotatably arranged inside the gear box. The worm gear meshes with the worm. A plurality of teeth are arranged on the circumferential surface of the worm gear. An oil storage groove is arranged in the area between adjacent teeth on the circumferential surface of the worm gear. The oil storage groove is of a concave structure.

[0006] Preferably, a plurality of diversion grooves are arranged on the top of the gear box, and the cross section of the diversion groove is of a semi-circular structure.

[0007] Preferably, an annular oil storage cavity is arranged inside the worm gear, and a splash oil passage is arranged on the outer side of the annular oil storage cavity. The splash oil passage is communicated with the surface of the teeth.

[0008] Preferably, a lubricating oil storage tank is arranged on the top of the gear box. An oil outlet pipe is arranged at the bottom of the lubricating oil storage tank. The lower part of the oil outlet pipe is communicated with the inside of the gear box. A valve is arranged on the oil outlet pipe. A piston plate is arranged inside the lubricating oil storage tank. A piston rod is connected to the piston plate. An oil injection channel is arranged in the middle of the piston rod. The oil injection channel penetrates downward through the piston plate. A locking cover is threadedly connected to the top of the piston rod. The lubricating oil storage tank is of a transparent structure, and a scale is arranged on the surface of the lubricating oil storage tank.

[0009] Preferably, a diversion assembly is arranged at the bottom of the lubricating oil storage tank. The diversion assembly includes a horizontally arranged diversion pipe and a plurality of longitudinally arranged branch pipes. The upper part of the diversion pipe is communicated with the oil outlet pipe. The lower part of the diversion pipe is communicated with a plurality of branch pipes. The bottoms of the plurality of branch pipes are communicated with the inner side of the top of the gear box.

[0010] The advantages of the present utility model are as follows:

[0011] 1. An oil storage groove is arranged in this solution. When the worm gear rotates and contacts the lubricating oil at the bottom, the concave-shaped oil storage groove can effectively capture and store the lubricating oil at the bottom during the rotation of the worm gear. When the worm gear contacts the worm, the lubricating oil in the oil storage groove can be more directly and effectively brought to the surface of the worm, thereby significantly improving the lubrication effect between the worm gear and the worm, reducing friction and wear. Due to the good lubrication effect, there is no need to add too much additional lubricating oil, reducing the consumption of lubricating oil.

[0012] 2. In this solution, a diversion groove is provided above the gearbox. Through the guidance of the diversion groove, the lubricating oil that might otherwise be wasted due to splashing is effectively utilized, improving the utilization rate of the lubricating oil. This helps reduce the consumption of lubricating oil and lower the operating cost.

[0013] 3. In this solution, the lubricating oil storage tank is of a transparent structure and has scales on its surface, which can facilitate observing the amount of lubricating oil injected into the gearbox. Operators can precisely control the amount of lubricating oil added through the scales according to the actual requirements of the gearbox, avoiding waste caused by overfilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the exploded structure diagram of the present utility model.

[0015] Figure 2 It is the structure diagram of the worm wheel of the present utility model.

[0016] Figure 3 It is the sectional structure diagram of the gearbox of the present utility model.

[0017] Figure 4 It is the sectional structure diagram of the worm wheel of the present utility model.

[0018] Figure 5 It is the structure diagram of the lubricating oil storage tank of the present utility model.

[0019] In the figure: 1 motor housing, 2 front end cover, 3 rear end cover, 4 stator, 5 rotor core, 6 rotating shaft, 7 worm, 8 worm wheel, 9 gearbox, 10 gear teeth, 11 oil sump, 12 diversion groove, 13 annular oil sump, 14 oil splashing passage, 15 lubricating oil storage tank, 16 oil outlet pipe, 17 valve, 18 piston plate, 19 piston rod, 20 oil injection channel, 21 locking cover, 22 shunt pipe, 23 branch pipe, 24 baffle plate, 25 pressing plate, 26 return spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0022] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, terms such as "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. At the same time, when an element is called "fixed to" or "provided on" another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is called "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. When an element is called "fixedly connected to" another element, it can adopt common fixed connection methods such as welding, bolt connection, or gluing connection. In short, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] Embodiment 1, as Figure 1-2 shown, a fuel-saving lubricating speed reducer includes a motor housing 1, a front end cover 2, a rear end cover 3, a stator 4, a rotor core 5, a rotating shaft 6, a worm 7, a worm gear 8, and a gear box 9. The front end cover 2 and the rear end cover are installed at the front and rear ends of the motor housing 1. The rotating shaft 6 is rotatably arranged inside the motor housing 1. A rotor core 5 is provided on the outer side of the middle of the rotating shaft 6, and a stator 4 is provided on the outer side of the rotor core 5. The rotating shaft 6 supports the rotor core 5 and the stator 4 and allows them to rotate freely.

[0024] One end of the rotating shaft 6 is connected to a worm 7. The worm 7 extends into the gear box 9. One end of the gear box 9 is fixedly connected to the rear end cover 3. A worm gear 8 is rotatably arranged inside the gear box 9. The worm gear 8 meshes with the worm 7. The worm 7 can be driven to rotate by the rotating shaft 6. When the worm 7 rotates, a friction transmission surface is formed between its spiral protrusions and the tooth grooves of the teeth 10 of the worm gear 8. The worm gear 8 is driven to rotate by the rotation of the worm 7 to achieve the purpose of speed reduction. An output shaft is provided in the middle of the worm gear 8 for outputting power.

[0025] The circumferential surface of the worm wheel 8 is provided with a number of teeth 10, and an oil sump 11 is provided between adjacent teeth 10. The oil sump 11 is of a concave structure. The oil sump 11 can be the strip groove concave structure adopted in this embodiment, or a spherical concave structure or a square groove concave structure. A relatively large amount of lubricating oil will be deposited at the bottom of the gearbox 9. When the worm wheel 8 rotates and contacts the lubricating oil at the bottom, the concave oil sump 11 can effectively capture and store the lubricating oil at the bottom during the rotation of the worm wheel 8. When the worm wheel 8 contacts the worm 7, the lubricating oil in the oil sump 11 can be more directly and effectively brought to the surface of the worm 7, thereby significantly improving the lubrication effect between the worm wheel 8 and the worm 7 and reducing friction and wear. The purpose of the strip groove concave structure adopted for the oil sump 11 in this embodiment is to capture more lubricating oil each time it contacts the lubricating oil at the bottom of the gearbox 9. Good lubrication not only reduces the direct friction between mechanical components, but also reduces the heat and wear generated by friction, thereby extending the service life of the worm wheel 8, the worm 7 and other related components. Moreover, due to the good lubrication effect, there is no need to add too much additional lubricating oil, reducing the consumption of lubricating oil.

[0026] Combined with Figure 3 , a number of diversion grooves 12 are provided at the top of the gearbox 9. The cross-section of the diversion grooves 12 is of a semi-circular structure. After the worm wheel 8 rotates, it will drive the lubricating oil on the surface of the teeth 10 to splash. In the prior art, the splashed lubricating oil will flow back down along the inner wall of the top of the gearbox 9 to the bottom of the gearbox 9. The provision of the diversion grooves 12 can cause the splashed lubricating oil to splash onto the diversion grooves 12 and then be guided to the worm 7 below, further increasing the lubrication effect of the worm 7. Through the guidance of the diversion grooves 12, the lubricating oil that might otherwise be wasted due to splashing is effectively utilized, improving the utilization rate of the lubricating oil. This helps to reduce the consumption of lubricating oil and lower the operating cost.

[0027] Combined with Figure 4 , in this embodiment, an annular oil sump 13 is provided inside the worm wheel 8, and a splash oil passage 14 is provided outside the annular oil sump 13. The splash oil passage 14 communicates with the surface of the teeth 10. The annular oil sump 13 can store a certain amount of lubricating oil, and this lubricating oil is effectively conveyed to the surface of the teeth 10 through the splash oil passage 14 during the rotation of the worm wheel 8. The splash oil passage 14 forms a hole-like structure on the top surface of the teeth 10. Since the teeth 10 are the parts that directly contact the worm 7 during the transmission process, it is crucial to ensure that there is always enough lubricating oil on the surface of the teeth 10 to reduce friction, wear and improve the transmission efficiency. Through the cooperation of the annular oil sump 13 and the splash oil passage 14, the lubricating oil can be more evenly distributed between the worm wheel 8 and the worm 7. Compared with the traditional lubrication method, this solution can avoid adding too much lubricant in the initial stage and the waste caused by the splashing or leakage of the lubricating oil, thereby reducing the operating cost.

[0028] Combined withFigure 5 , a lubricating oil storage tank 15 is provided at the top of the gearbox 9. An oil outlet pipe 16 is provided at the bottom of the lubricating oil storage tank 15, and a valve 17 is provided on the oil outlet pipe 16. A piston plate 18 is provided inside the lubricating oil storage tank 15. A piston rod 19 is connected to the piston plate 18, and the top of the piston rod 19 passes through the top of the lubricating oil storage tank 15. An oil injection channel 20 is provided in the middle of the piston rod 19, and the oil injection channel 20 penetrates downward through the piston plate 18. A locking cover 21 is threadedly connected to the top of the piston rod 19. The lubricating oil storage tank 15 is of a transparent structure, such as made of glass, and a scale (not shown in the figure) is provided on the surface of the lubricating oil storage tank 15. After closing the valve 17 on the oil outlet pipe 16 and opening the locking cover 21, lubricating oil can be added to the lubricating oil storage tank 15. After locking the locking cover 21 and then opening the valve 17 on the oil outlet pipe 16, by pressing the piston rod 19, the lubricating oil in the lubricating oil storage tank 15 can be injected into the gearbox 9. The lubricating oil storage tank 15 is of a transparent structure and a scale is provided on the surface of the lubricating oil storage tank 15, which can facilitate observing the amount of lubricating oil injected into the gearbox 9. The operator can accurately control the amount of lubricating oil added through the scale according to the actual needs of the gearbox 9, avoiding waste caused by overfilling.

[0029] The valve 17 in this embodiment can be any valve 17 on the market, such as a globe valve, a gate valve, a ball valve, and a butterfly valve, etc. A globe valve is used as the valve 17 in this embodiment. It uses a movable square plug plate to block the pipeline. The square plug plate is perpendicular to the oil outlet pipe 16. When the valve 17 is closed, the plug plate is pushed into the pipeline to block the flow of lubricating oil. The above valve 17 structures are all well-known technologies in the art, and their specific structures will not be elaborated in this embodiment. In this embodiment, baffles are provided on both sides of the top of the lubricating oil storage tank 15. A pressing plate is connected to the top of the piston rod 19, and both sides of the bottom of the pressing plate are connected to the baffles through return springs. After pressing the piston rod 19, the piston rod 19 can be quickly reset through the return springs.

[0030] A flow splitting assembly is provided at the bottom of the lubricating oil storage tank 15. The flow splitting assembly includes a horizontally arranged flow splitting pipe 22 and a plurality of longitudinally arranged branch pipes 23. The upper part of the flow splitting pipe 22 is communicated with the oil outlet pipe 16, the lower part of the flow splitting pipe 22 is communicated with a plurality of branch pipes 23, and the bottoms of the plurality of branch pipes 23 are communicated with the inner side of the top of the gearbox 9. The flow splitting pipe 22 and the branch pipes 23 play a supporting role for the lubricating oil storage tank 15. The lower outlet of the branch pipe 23 is directly opposite to the worm 7, which enables the lubricating oil to directly spray onto the surface of the worm 7 at the initial oil injection stage, reducing the diffusion and waste of the lubricating oil in the gearbox 9. This directly aligned design ensures that the worm 7 can be fully lubricated first, reducing the ineffective circulation of the lubricating oil in the box body. At the same time, it can also make the lubricating oil distribution more uniform.

[0031] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fuel-saving lubricating reducer, characterized in that: The motor comprises a motor housing (1), a front end cover (2), a rear end cover (3), a stator (4), a rotor core (5), a rotating shaft (6), a worm (7), a worm wheel (8) and a gear box (9), wherein the front end cover (2) and the rear end cover (3) are mounted at the front and rear ends of the motor housing (1), the rotating shaft (6) is rotatably arranged inside the motor housing (1), the rotor core (5) is arranged on the middle outer side of the rotating shaft (6), the stator (4) is arranged on the outer side of the rotor core (5), and the rotating shaft (6) A worm (7) is connected to one end of the gear box (9), the worm (7) extending into the gear box (9), one end of the gear box (9) being fixedly connected to the rear end cover (3), a worm wheel (8) being rotatably arranged inside the gear box (9), the worm wheel (8) being meshed with the worm (7), a plurality of gear teeth (10) being arranged on the circumferential surface of the worm wheel (8), an oil accumulation groove (11) being a concave structure in the area of ​​the circumferential surface of the worm wheel (8) located between adjacent gear teeth (10).

2. The oil-saving lubricating reducer according to claim 1, characterized in that: A plurality of guide grooves (12) are provided on the top of the gear box (9), and the cross-section of the guide grooves (12) is a semicircular structure.

3. The oil-saving lubricating reducer according to claim 2 is characterized in that: An annular oil accumulation chamber (13) is provided on the inner side of the worm wheel (8), an oil splashing passage (14) is provided on the outer side of the annular oil accumulation chamber (13), and the oil splashing passage (14) is connected to the surface of the gear teeth (10).

4. The oil-saving lubricating reducer according to claim 3 is characterized in that: A lubricating oil storage tank (15) is provided at the top of the gear box (9), an oil outlet pipe (16) is provided at the bottom of the lubricating oil storage tank (15), a valve (17) is provided on the oil outlet pipe (16), the lower part of the oil outlet pipe (16) is communicated with the interior of the gear box (9), a piston plate (18) is provided inside the lubricating oil storage tank (15), a piston rod (19) is connected to the piston plate (18), an oil injection channel (20) is provided in the middle of the piston rod (19), the oil injection channel (20) is downwardly penetrated through the piston plate (18), a locking cover (21) is threadedly connected to the top of the piston rod (19), the lubricating oil storage tank (15) is a transparent structure, and a scale is provided on the surface of the lubricating oil storage tank (15).

5. The oil-saving lubricating reducer according to claim 4, characterized in that: A flow distribution component is provided at the bottom of the lubricating oil storage tank (15), and the flow distribution component comprises a horizontally arranged flow distribution pipe (22) and a plurality of longitudinally arranged branch pipes (23); the upper portion of the flow distribution pipe (22) is connected to the oil outlet pipe (16); the lower portion of the flow distribution pipe (22) is connected to the plurality of branch pipes (23); and the bottom portions of the plurality of branch pipes (23) are connected to the inner side of the top of the gear box (9).

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