Double-pinwheel small-tooth-difference precision speed reducer

Abstract

The invention relates to the field of double-pinwheel small-tooth-difference precision reducers, and discloses a double-pinwheel small-tooth-difference precision reducer which comprises a reducer mounting shell, a speed reduction mounting assembly is arranged in the reducer mounting shell, a lubricating mounting assembly is arranged on one side of the speed reduction mounting assembly, and a lubricating oil supplementing assembly is arranged on one side of the lubricating mounting assembly. In actual use, through the speed reduction installation assembly and the lubrication installation assembly, small-tooth-difference precise speed reduction of the double-pinwheel is carried out, and meanwhile, the speed reduction speed reduction assembly is arranged on the periphery of the speed reducer installation shell, and the emergency transmission stop assembly is arranged on one side of the worm wheel and worm speed reduction assembly. Lubricating oil is uniformly sprayed to high-abrasion areas such as a pinwheel body, a cycloidal gear and a cycloidal rod, non-uniform load distribution is often generated due to eccentric motion in meshing transmission of the pinwheel and the cycloidal gear, tooth surface abrasion is aggravated, and a traditional lubricating system mostly adopts a single oil way or periodical manual oil supplementation, so that the working efficiency is high. And the lubrication requirement under the dynamic working condition cannot be met in real time.

Description

Technical Field

[0001] The present invention relates to the field of double pin - wheel planetary reducers with few teeth difference, and more specifically, to a double pin - wheel planetary reducer with few teeth difference. Background Art

[0002] A pin - wheel reducer is an efficient speed - reducing device designed based on the principle of planetary transmission with few teeth difference. Its core realizes power transmission and speed reduction through the meshing movement between a cycloid gear and a pin - wheel. Its name comes from the key internal component, the pin - wheel, on which multiple cylindrical pin teeth (pin shafts) are distributed, forming a rolling mesh with the cycloid tooth grooves of the cycloid gear, and achieving a high reduction ratio through the tooth - number difference.

[0003] In the prior art, the meshing transmission between the pin - wheel and the cycloid gear often generates non - uniform load distribution due to eccentric motion, resulting in increased tooth - surface wear. And traditional lubrication systems mostly use a single oil circuit or periodic manual oil replenishment, which cannot adapt to the lubrication requirements under dynamic working conditions in real - time. Summary of the Invention

[0004] In view of the problems in the related art, the present invention proposes a double pin - wheel planetary reducer with few teeth difference to overcome the above - mentioned technical problems existing in the prior related art.

[0005] For this purpose, the specific technical solution adopted by the present invention is as follows: A double pin - wheel planetary reducer with few teeth difference includes a reducer installation housing. Inside the reducer installation housing, there is a speed - reduction installation component. On one side of the speed - reduction installation component, there is a lubrication installation component. On one side of the lubrication installation component, there is a lubricating oil replenishment component. Around the reducer installation housing, there is a worm - gear speed - reduction component. On one side of the worm - gear speed - reduction component, there is an emergency transmission stop component; To achieve the function of speed - reduction installation, inside the speed - reduction installation component, there is a speed - reduction transmission plate. The speed - reduction transmission plate is installed inside the reducer installation housing. Inside the speed - reduction transmission plate, there is a pin - wheel installation groove. Inside the pin - wheel installation groove, a pin - wheel body is fixedly installed. Inside the pin - wheel body, an input shaft is movably connected. Symmetrically connected to the periphery of the input shaft are limiting arc plates. The periphery of the limiting arc plates is slidably mated with limiting chutes. The limiting chutes are symmetrically opened inside the speed - reduction transmission plate. On one side of the limiting arc plates, there is an eccentric wheel. Connected to the periphery of the eccentric wheel is a cycloid gear. Inside the cycloid gear, there is a cycloid groove. Slidably mated inside the cycloid groove is a cycloid rod. One end of the cycloid rod is connected to an output circular plate. The output circular plate is movably and fixedly connected to the input shaft. On one side of the output circular plate, an output shaft is fixedly connected. The input shaft and the output shaft are movably connected to the reducer installation housing through a first sealing bearing.

[0006] Furthermore, around the reducer installation housing, there is a reducer support frame. The reducer support frame is fixedly connected to the reducer installation housing.

[0007] Further, in order to achieve the effect of lubricating installation, the lubricating installation component includes a lubricating installation circular plate. Around the periphery of the lubricating installation circular plate, an intermediate connecting plate is connected. One end of the intermediate connecting plate is connected to a lubricating installation ring. On one side of the lubricating installation ring, an oil inlet housing is connected around it. Oil inlet ports are symmetrically opened on both sides of the oil inlet housing. On one side of the oil inlet housing, a conical liquid outlet head is connected.

[0008] Further, in order to achieve the effect of lubricating oil replenishment, the lubricating oil replenishment component includes a liquid inlet head. The liquid inlet head is installed above the reducer installation housing. A liquid inlet cover is threadedly connected around the periphery of the liquid inlet head. A cleaning liquid outlet pipe is connected to the bottom of the reducer installation housing. A cleaning liquid outlet valve is installed inside the cleaning liquid outlet pipe.

[0009] Further, an observation installation groove is opened inside the reducer installation housing, and an observation glass is installed inside the observation installation groove.

[0010] Further, a liquid level scale bar is installed on one side of the observation glass.

[0011] Further, in order to achieve the effect of worm and worm gear reduction, the worm and worm gear reduction component includes a driving worm wheel. The driving worm wheel is fixedly connected to the input shaft. A driving worm is meshed on one side of the driving worm wheel. The driving worm is movably connected to the reducer installation housing through a second sealing bearing.

[0012] Further, in order to achieve the effect of emergency transmission stop, the emergency transmission stop component includes an emergency braking wheel. The emergency braking wheel is installed around the periphery of the driving worm. A braking arc plate is provided on one side of the emergency braking wheel. A braking friction layer is installed inside the braking arc plate. A hydraulic push rod is connected to one side of the braking arc plate, and the hydraulic push rod is connected to the reducer installation housing.

[0013] Further, a controller is installed on one side of the reducer support frame, and the controller is connected to the hydraulic push rod.

[0014] Further, sliding limit rods are symmetrically connected around the periphery of the braking arc plate. A limit fixing plate is slidably fitted around the periphery of the sliding limit rods. One side of the limit fixing plate is fixedly connected to the reducer installation housing, and the inside of the limit fixing plate is fixedly connected to the hydraulic push rod.

[0015] The beneficial effects of the present invention are as follows: (1) During the actual use of the present invention, through the deceleration installation component and the lubricating installation component, while performing double-pin-wheel less-tooth-difference precision deceleration, lubricating oil is evenly sprayed on the high-wear areas such as the pinion wheel body, cycloid wheel, and cycloid rod. The meshing transmission between the pinion wheel and the cycloid wheel often generates non-uniform load distribution due to eccentric motion, resulting in increased tooth surface wear. Traditional lubrication systems mostly use a single oil circuit or periodic manual oil replenishment, and cannot adapt to the lubrication requirements under dynamic working conditions in real time.

[0016] (2) In actual use of the present invention, the transmission worm gear is fixed around the input shaft and meshes with the transmission worm. The transmission worm is installed on the side wall of the reducer installation housing through a second sealing bearing. The meshing of the transmission worm gear and the transmission worm provides secondary reduction, and at the same time, precise speed regulation of the output shaft is achieved through the rotation speed of the transmission worm.

[0017] (2) In actual use of the present invention, when the controller detects an abnormal load or overspeed, it triggers the hydraulic push rod to push the braking arc plate. The braking friction layer and the emergency braking wheel generate frictional resistance, forcing the transmission worm to stop rotating, and thus cutting off the power transmission of the input shaft to achieve rapid braking. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 is a schematic diagram of the main structure of a double-pin-wheel planetary gear reducer with small tooth difference according to an embodiment of the present invention; Figure 2 is a three-dimensional view of a double-pin-wheel planetary gear reducer with small tooth difference according to an embodiment of the present invention; Figure 3 is a schematic diagram of the structure of the reduction installation component in a double-pin-wheel planetary gear reducer with small tooth difference according to an embodiment of the present invention; Figure 4 is a schematic diagram of the structure of the reduction installation component in a double-pin-wheel planetary gear reducer with small tooth difference according to an embodiment of the present invention; Figure 5 is a schematic diagram of the structure of the lubrication installation component in a double-pin-wheel planetary gear reducer with small tooth difference according to an embodiment of the present invention; Figure 6 is a schematic diagram of the structure of the lubricating oil replenishment component in a double-pin-wheel planetary gear reducer with small tooth difference according to an embodiment of the present invention; Figure 7 is a schematic diagram of the structure of the worm gear reduction component in a double-pin-wheel planetary gear reducer with small tooth difference according to an embodiment of the present invention; Figure 8 is a schematic diagram of the structure of the emergency transmission stop component in a double-pin-wheel planetary gear reducer with small tooth difference according to an embodiment of the present invention.

[0020] In the figure: 1. Reducer installation housing; 2. Reduction installation assembly; 201. Reduction drive plate; 202. Cycloid gear installation groove; 203. Cycloid gear body; 204. Input shaft; 205. Limiting arc plate; 206. Limiting sliding groove; 207. Eccentric wheel; 208. Cycloid gear; 209. Cycloid gear groove; 210. Cycloid rod; 211. Output circular plate; 212. First sealing bearing; 213. Output shaft; 3. Lubrication installation assembly; 301. Lubrication installation circular plate; 302. Intermediate connecting plate; 303. Lubrication installation ring; 304. Oil inlet housing; 305. Oil inlet; 306. Conical liquid outlet head; 4. Lubricating oil replenishment assembly; 401. Liquid inlet head; 402. Liquid inlet cover; 403. Cleaning liquid outlet pipe; 404. Cleaning liquid outlet valve; 5. Worm and worm gear reduction assembly; 501. Driving worm gear; 502. Driving worm; 503. Second sealing bearing; 6. Emergency drive stop assembly; 601. Emergency braking wheel; 602. Braking arc plate; 603. Braking friction layer; 604. Hydraulic push rod; 7. Reducer support frame; 8. Observation installation groove; 9. Observation glass; 10. Liquid level scale bar; 11. Controller; 12. Sliding limiting rod; 13. Limiting fixing plate. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] According to an embodiment of the present invention, a double cycloid gear and few tooth difference precision reducer is provided. The core components of the double cycloid gear and few tooth difference precision reducer are integrated inside the reducer installation housing 1. The reducer installation housing 1 is fixed to the equipment base through the reducer support frame 7. The reduction installation assembly 2 is centrally installed in the inner cavity of the reducer installation housing 1. Its input end is connected to an external power source through the input shaft 204, and its output end transmits power through the output shaft 213; the lubrication installation assembly 3 is arranged around the reduction installation assembly 2, the lubricating oil replenishment assembly 4 is located at the top and bottom of the reducer installation housing 1, and the worm and worm gear reduction assembly 5 and the emergency drive stop assembly 6 are installed on the inner side wall of the reducer installation housing 1.

[0023] As Figure 1-4As shown in the figure, the double-pin-wheel planetary gear reducer with few teeth difference according to the embodiment of the present invention has a speed reduction mounting assembly 2 inside which there is a speed reduction drive plate 201. The speed reduction drive plate 201 is installed inside the reducer mounting housing 1. Inside the speed reduction drive plate 201, there is a pin wheel mounting groove 202. Inside the pin wheel mounting groove 202, a pin wheel body 203 is fixedly installed. Inside the pin wheel body 203, an input shaft 204 is movably connected. Symmetrically connected to the periphery of the input shaft 204 are limiting arc plates 205. Slidably engaged with the periphery of the limiting arc plates 205 are limiting sliding grooves 206. The limiting sliding grooves 206 are symmetrically opened inside the speed reduction drive plate 201. On one side of the limiting arc plate 205, there is an eccentric wheel 207. Connected to the periphery of the eccentric wheel 207 is a cycloid gear 208. Inside the cycloid gear 208, there is a cycloid groove 209. Slidably engaged inside the cycloid groove 209 is a cycloid rod 210. One end of the cycloid rod 210 is connected to an output circular plate 211. The output circular plate 211 is movably and fixedly connected to the input shaft 204. On one side of the output circular plate 211, an output shaft 213 is fixedly connected. The input shaft 204 and the output shaft 213 are movably connected to the reducer mounting housing 1 through a first sealing bearing 212. Outside the reducer mounting housing 1, there is a reducer support frame 7. The reducer support frame 7 is fixedly connected to the reducer mounting housing 1.

[0024] Through the above technical solution, the speed reduction drive plate 201 is fixed inside the inner cavity of the reducer mounting housing 1, and the pin wheel body 203 is embedded in the pin wheel mounting groove 202 opened inside it. The input shaft 204 passes through the pin wheel body 203 and is movably connected to the reducer mounting housing 1 through a first sealing bearing 212. Symmetrically welded to the periphery of the input shaft 204 are limiting arc plates 205. The limiting arc plates 205 are embedded in the limiting sliding grooves 206 inside the speed reduction drive plate 201 to realize the radial limit of the input shaft 204. At the end of the input shaft 204, an eccentric wheel 207 is connected. The eccentric wheel 207 drives the cycloid gear 208 to make an eccentric swing. The cycloid groove 209 opened inside the cycloid gear 208 is slidably engaged with the cycloid rod 210. The other end of the cycloid rod 210 is fixed to the output circular plate 211. The output circular plate 211 is connected to the reducer mounting housing 1 through a first sealing bearing 212 and outputs power through the output shaft 213.

[0025] The external power drives the input shaft 204 to rotate. The input shaft 204 drives the cycloid gear 208 to make an eccentric rotary motion through the eccentric wheel 207. The cycloid groove 209 of the cycloid gear 208 is slidably engaged with the cycloid rod 210 to convert the eccentric motion into the uniform rotation of the output circular plate 211, and finally output the reduced-speed power through the output shaft 213. The cooperation between the limiting arc plate 205 and the limiting sliding groove 206 limits the radial offset of the input shaft 204 to ensure the transmission stability.

[0026] As Figure 5As shown in the figure, for the double-pinwheel planetary gear reducer with few teeth difference according to an embodiment of the present invention, the lubrication installation assembly 3 includes a lubrication installation circular plate 301. A middle connecting plate 302 is connected around the periphery of the lubrication installation circular plate 301. One end of the middle connecting plate 302 is connected to a lubrication installation ring 303. An oil inlet housing 304 is connected around one side of the lubrication installation ring 303. Oil inlets 305 are symmetrically arranged on both sides of the oil inlet housing 304. A conical liquid outlet head 306 is connected to one side of the oil inlet housing 304.

[0027] Through the above technical solution, the lubrication installation circular plate 301 is sleeved around the periphery of the input shaft 204 and connected to the lubrication installation ring 303 through the middle connecting plate 302. The oil inlet housing 304 is welded to the outer wall of the lubrication installation ring 303, and the oil inlets 305 are symmetrically arranged on both sides. The conical liquid outlet head 306 sprays lubricating oil onto the friction pairs of the reduction installation assembly 2 in a directional manner.

[0028] The lubricating oil is injected into the reducer installation housing 1 through the liquid inlet head 401, distributed to the conical liquid outlet head 306 through the oil inlets 305 of the oil inlet housing 304, and evenly sprayed onto highly worn areas such as the pinwheel body 203, the cycloid gear 208, and the cycloid rod 210. The waste oil is discharged through the cleaning liquid outlet pipe 403, and the observation glass 9 and the liquid level scale bar 10 assist maintenance personnel in monitoring the oil volume.

[0029] As Figure 6 shown in the figure, for the double-pinwheel planetary gear reducer with few teeth difference according to an embodiment of the present invention, the lubricating oil replenishment assembly 4 includes a liquid inlet head 401. The liquid inlet head 401 is installed above the reducer installation housing 1. A liquid inlet cover 402 is threadedly connected around the periphery of the liquid inlet head 401. A cleaning liquid outlet pipe 403 is connected to the bottom of the reducer installation housing 1. A cleaning liquid outlet valve 404 is installed inside the cleaning liquid outlet pipe 403. An observation installation groove 8 is opened inside the reducer installation housing 1. An observation glass 9 is installed inside the observation installation groove 8. A liquid level scale bar 10 is installed on one side of the observation glass 9.

[0030] Through the above technical solution, the liquid inlet head 401 of the lubricating oil replenishment assembly 4 is installed on the top of the reducer installation housing 1 and sealed by the liquid inlet cover 402; the cleaning liquid outlet pipe 403 at the bottom is equipped with a cleaning liquid outlet valve 404 for discharging waste oil or cleaning liquid.

[0031] As Figure 7 shown in the figure, for the double-pinwheel planetary gear reducer with few teeth difference according to an embodiment of the present invention, the worm and worm gear reduction assembly 5 includes a driving worm gear 501. The driving worm gear 501 is fixedly connected to the input shaft 204. A driving worm 502 is meshed with one side of the driving worm gear 501. The driving worm 502 is movably connected to the reducer installation housing 1 through a second sealing bearing 503.

[0032] Through the above technical solution, the transmission worm gear 501 is fixed around the input shaft 204 and meshes with the transmission worm 502. The transmission worm 502 is installed on the side wall of the reducer installation housing 1 through the second sealed bearing 503.

[0033] The meshing of the transmission worm gear 501 and the transmission worm 502 provides a two-stage reduction, and at the same time, the precise speed regulation of the output shaft 213 is achieved through the rotation speed of the transmission worm 502.

[0034] As Figure 8 shown, in the double pinion few tooth difference precision reducer according to the embodiment of the present invention, the emergency transmission stop assembly 6 includes an emergency braking wheel 601. The emergency braking wheel 601 is installed around the transmission worm 502. A braking arc plate 602 is provided on one side of the emergency braking wheel 601. A braking friction layer 603 is installed inside the braking arc plate 602. A hydraulic push rod 604 is connected to one side of the braking arc plate 602. The hydraulic push rod 604 is connected to the reducer installation housing 1. A controller 11 is installed on one side of the reducer support frame 7. The controller 11 is connected to the hydraulic push rod 604. Sliding limit rods 12 are symmetrically connected around the braking arc plate 602. A limit fixing plate 13 is slidably fitted around the sliding limit rods 12. One side of the limit fixing plate 13 is fixedly connected to the reducer installation housing 1. The inside of the limit fixing plate 13 is fixedly connected to the hydraulic push rod 604.

[0035] Through the above technical solution, the emergency braking wheel 601 of the emergency transmission stop assembly 6 is sleeved around the transmission worm 502. The braking friction layer 603 inside the braking arc plate 602 presses the emergency braking wheel 601 through the hydraulic push rod 604. The hydraulic push rod 604 is controlled by the controller 11. The sliding limit rods 12 and the limit fixing plate 13 ensure the linear movement of the braking arc plate 602.

[0036] When the controller 11 detects an abnormal load or overspeed, it triggers the hydraulic push rod 604 to push the braking arc plate 602. The braking friction layer 603 and the emergency braking wheel 601 generate frictional resistance, forcing the transmission worm 502 to stop rotating, thereby cutting off the power transmission of the input shaft 204 and achieving rapid braking.

[0037] To facilitate the understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process will be described in detail below.

[0038] In summary, by means of the above technical solutions of the present invention, during actual use of the present invention, through the speed reduction installation component 2 and the lubrication installation component 3, while performing double-pinwheel planetary gear precision speed reduction, lubricating oil is evenly sprayed on highly worn areas such as the pinwheel body 203, the cycloid gear 208, and the cycloid rod 210. The meshing transmission between the pinwheel and the cycloid gear 208 often generates non-uniform load distribution due to eccentric motion, resulting in increased tooth surface wear. Traditional lubrication systems mostly use a single oil circuit or periodic manual oil replenishment, and cannot adapt to the lubrication requirements under dynamic working conditions in real time.

[0039] During actual use of the present invention, the transmission worm gear 501 is fixed around the input shaft 204 and meshes with the transmission worm 502. The transmission worm 502 is installed on the side wall of the reducer installation housing 1 through the second sealed bearing 503.

[0040] The meshing of the transmission worm gear 501 and the transmission worm 502 provides secondary speed reduction, and at the same time, precise speed regulation of the output shaft 213 is achieved through the rotation speed of the transmission worm 502.

[0041] During actual use of the present invention, when the controller 11 detects abnormal load or overspeed, it triggers the hydraulic push rod 604 to push the braking arc plate 602. The braking friction layer 603 generates frictional resistance with the emergency braking wheel 601, forcing the transmission worm 502 to stop rotating, and then cutting off the power transmission of the input shaft 204 to achieve rapid braking.

[0042] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A double-pin wheel small tooth difference precision reducer, characterized in that: The invention comprises a reducer mounting housing (1), a reduction mounting assembly (2) is arranged inside the reducer mounting housing (1), a lubrication mounting assembly (3) is arranged on one side of the reduction mounting assembly (2), a lubrication oil replenishment assembly (4) is arranged on one side of the lubrication mounting assembly (3), a worm gear reduction assembly (5) is arranged on the periphery of the reducer mounting housing (1), and an emergency transmission stop assembly (6) is arranged on one side of the worm gear reduction assembly (5); A reduction drive plate (201) is provided inside the reduction mounting assembly (2), the reduction drive plate (201) is mounted inside the reduction gear mounting housing (1), a pinwheel mounting groove (202) is provided inside the reduction drive plate (201), a pinwheel body (203) is fixedly mounted inside the pinwheel mounting groove (202), an input shaft (204) is movably connected inside the pinwheel body (203), a limiting arc plate (205) is symmetrically connected to the periphery of the input shaft (204), a limiting arc plate (205) is slidably matched to the periphery of the limiting arc plate (205) with a limiting slide groove (206), and the limiting slide groove (206) is symmetrically provided inside the reduction drive plate (201), and the limiting arc plate (205) is symmetrically provided to the periphery of the limiting arc plate (205). An eccentric wheel (207) is provided on one side of the position arc plate (205); a cycloid wheel (208) is connected to the periphery of the eccentric wheel (207); a cycloid groove (209) is provided inside the cycloid wheel (208); a cycloid rod (210) is slidably fitted inside the cycloid groove (209); an output circular plate (211) is connected to one end of the cycloid rod (210); the output circular plate (211) is movably fixedly connected to the input shaft (204); an output shaft (213) is fixedly connected to one side of the output circular plate (211); and the input shaft (204) and the output shaft (213) are movably connected to the reducer mounting housing (1) via a first sealed bearing (212).

2. A double-pin wheel small tooth difference precision reducer according to claim 1, characterized in that: A reducer support frame (7) is provided on the periphery of the reducer installation housing (1), and the reducer support frame (7) is fixedly connected to the reducer installation housing (1).

3. A double-pin wheel small tooth difference precision reducer according to claim 2, characterized in that: The lubrication installation assembly (3) comprises a lubrication installation circular plate (301), the lubrication installation circular plate (301) is surrounded by an intermediate connecting plate (302) on its periphery, one end of the intermediate connecting plate (302) is connected to a lubrication installation ring (303), one side of the lubrication installation ring (303) is surrounded by an oil inlet housing (304), two sides of the oil inlet housing (304) are symmetrically provided with oil inlets (305), and one side of the oil inlet housing (304) is connected to a conical liquid outlet head (306).

4. A double-pin wheel precision reducer with small tooth difference according to claim 3, characterized in that: The lubricating oil replenishing assembly (4) comprises a liquid inlet head (401), the liquid inlet head (401) is installed above the reducer mounting housing (1), the outer periphery of the liquid inlet head (401) is threadedly connected to a liquid inlet cover (402), the bottom of the reducer mounting housing (1) is connected to a cleaning liquid outlet pipe (403), and a cleaning liquid outlet valve (404) is installed inside the cleaning liquid outlet pipe (403).

5. A double-pin wheel precision reducer with small tooth difference according to claim 4, characterized in that: An observation installation groove (8) is provided inside the reducer installation housing (1), and an observation glass (9) is installed inside the observation installation groove (8).

6. A double-pin wheel small tooth difference precision reducer according to claim 5, characterized in that: A liquid level scale bar (10) is installed on one side of the observation glass (9).

7. A double-pin wheel small tooth difference precision reducer according to claim 6, characterized in that: The worm gear reduction assembly (5) comprises a transmission worm wheel (501), the transmission worm wheel (501) is fixedly connected to the input shaft (204), a transmission worm (502) is meshed on one side of the transmission worm wheel (501), and the transmission worm (502) is movably connected to the reducer mounting housing (1) via a second sealed bearing (503).

8. A double-pin wheel small tooth difference precision reducer according to claim 7, characterized in that: The emergency transmission stop assembly (6) comprises an emergency brake wheel (601), the emergency brake wheel (601) being mounted on the periphery of the transmission worm (502), a brake arc plate (602) being provided on one side of the emergency brake wheel (601), a brake friction layer (603) being installed inside the brake arc plate (602), a hydraulic push rod (604) being connected to one side of the brake arc plate (602), and the hydraulic push rod (604) being connected to the reducer mounting housing (1).

9. A double-pin wheel small tooth difference precision reducer according to claim 8, characterized in that: A controller (11) is installed on one side of the reducer support frame (7), and the controller (11) is connected to the hydraulic push rod (604).

10. A double-pin wheel small tooth difference precision reducer according to claim 9, characterized in that: The brake arc plate (602) is symmetrically connected to a sliding limit rod (12) on its periphery, and a limit fixing plate (13) is slidably matched to the sliding limit rod (12) on its periphery, one side of the limit fixing plate (13) is fixedly connected to the reducer mounting housing (1), and the inside of the limit fixing plate (13) is fixedly connected to the hydraulic push rod (604).

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