Oil leakage prevention speed reducer
By introducing a combination structure of exhaust column, movable plug and sealing ring into the reducer, the problem of lubricating oil leakage caused by increased air pressure is solved, the sealing and heat dissipation effects are improved, and oil leakage is prevented.
Patent Information
- Application Number
- CN202520580348.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-03-31
AI Technical Summary
During operation, the internal air expansion of the speed reducer increases the air pressure, leading to lubricating oil leakage, especially when the seals are not tightly assembled, resulting in severe oil leakage.
An oil-leakage-proof speed reducer was designed, which adopts a combination structure of exhaust column, movable plug, sealing strip and sealing ring. Through the design of exhaust groove and sealing groove, air pressure balance and sealing performance are achieved, and heat dissipation components are combined to reduce internal air pressure and temperature.
It effectively prevents lubricating oil leakage, improves sealing, reduces internal air pressure during long-term operation, ensures the sealing and heat dissipation of the reducer, and solves the problem of lubricating oil leakage.
Smart Images
Figure CN223676953U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a speed reducer technical field, concretely relates to an oil leakage prevention speed reducer. BACKGROUND
[0002] Speed reducer is widely used in modern machinery, and is a kind of transmission device for converting high-speed motor input into low-speed high-torque output. In order to reduce the frictional resistance between the contact surfaces of various parts, reduce the surface temperature of various parts, and prolong the service life, lubricating oil is usually added inside the speed reducer.
[0003] When the speed reducer works, heat is generated by the meshing friction of internal gears, and the longer the working time is, the more heat is generated. After the internal air of the speed reducer is heated, it will expand, which will make the internal air pressure of the speed reducer larger, which will cause the problem of leakage of lubricating oil due to extrusion. If the sealing element is not tightly fitted during the assembly process of the speed reducer, the problem of serious oil leakage will occur. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing an oil leakage prevention speed reducer to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an oil leakage prevention speed reducer, comprising a lower machine box, an upper machine box fixedly arranged above the lower machine box, and a plurality of gear shafts, the gear shafts are rotatably connected with the lower machine box and the upper machine box through bearings, the lower machine box and the upper machine box are provided with an oil leakage prevention assembly, the oil leakage prevention assembly comprises an exhaust column, a movable plug, a sealing strip, a plurality of sealing rings fixedly arranged on the sealing strip, a connecting assembly, and a heat dissipation assembly, a jack is formed in the top wall of the upper machine box, the exhaust column is inserted into the jack and fixedly connected with the upper machine box through the connecting assembly, a sliding groove matched with the movable plug is formed in the bottom wall of the exhaust column, the movable plug is inserted into the sliding groove and slidably connected with the exhaust column, an exhaust groove penetrating through the sliding groove is formed in the outer side wall of the exhaust column, a convex ring A is fixedly arranged on the inner side wall of the sliding groove below the movable plug and the exhaust groove, sealing grooves matched with the sealing strip and the sealing rings are formed in the top wall of the lower machine box and the bottom wall of the upper machine box, the sealing strip and the sealing rings are inserted into the sealing grooves and fixedly arranged between the lower machine box and the upper machine box through screws, and the sealing rings are sleeved on the bearings and fixedly connected with the bearings.
[0006] Preferably, the connecting assembly comprises a convex ring B fixedly arranged on the outer side of the exhaust column and a threaded sleeve, the convex ring B is located in the interior of the upper machine box, threads are formed in the outer side wall of the exhaust column, and the threaded sleeve is screwed into the exhaust column, so that the threaded sleeve and the convex ring B are fixedly connected with the upper machine box.
[0007] Preferably, the connecting assembly further comprises a sealing gasket fixedly arranged below the threaded sleeve and above the convex ring B, and the sealing gasket is fixedly connected with the upper machine box after the threaded sleeve is screwed into the exhaust column.
[0008] Preferably, the heat dissipation assembly comprises an oil pump fixedly arranged at the rear side of the lower case, an oil pipe A, a filter fixedly arranged on the oil pipe A, an oil pipe B, a cooler fixedly arranged on the oil pipe B, and a temperature gauge fixedly arranged above the upper case, both ends of the oil pipe A are communicated with the inside of the lower case and the oil inlet end of the oil pump respectively, and both ends of the oil pipe B are communicated with the inside of the upper case and the oil outlet end of the oil pump respectively.
[0009] Preferably, a guide groove is arranged on the inner side wall of the sliding groove, and a guide strip is fixedly arranged on the movable plug and is inserted into the guide groove and connected with the guide column in sliding mode.
[0010] Preferably, anti-skid lines are arranged on the outer side wall of the threaded sleeve.
[0011] Preferably, the bearing is a sealed bearing, and the movable plug, the sealing strip and the sealing ring are made of butyronitrile rubber.
[0012] The utility model discloses an internal structure of the speed reducer, the movable plug is inserted into the inside of the sliding groove, the exhaust column is inserted into the insertion hole and is fixedly connected with the upper case through the connecting component, the convex ring A is located below the movable plug, and the inner hole diameter of the convex ring A is less than the diameter of the movable plug, which prevents the movable plug from falling off.When the speed reducer works for a long time, the air in the upper case expands after being heated, and the upper case is closed, so that the air pressure in the upper case increases, thereby pushing the movable plug to move upwards, and when the movable plug moves above the exhaust groove, the air in the upper case is discharged to the outside of the case through the exhaust groove, thereby reducing the air pressure in the upper case and preventing the lubricating oil from leaking due to extrusion. The utility model discloses an internal structure of the speed reducer, the movable plug is inserted into the inside of the sliding groove, the exhaust column is inserted into the insertion hole and is fixedly connected with the upper case through the connecting component, the convex ring A is located below the movable plug, and the inner hole diameter of the convex ring A is less than the diameter of the movable plug, which prevents the movable plug from falling off. BRIEF DESCRIPTION OF DRAWINGS
[0013] FIG. 1 is a structural schematic diagram of the utility model; Figure 1 FIG. 2 is an internal structure schematic diagram of the utility model;
[0014] FIG. 3 is a structural schematic diagram of the utility model; Figure 2 FIG. 4 is an internal structure schematic diagram of the utility model;
[0015] Figure 3The rear side structure schematic view of the utility model is shown in the figure.
[0016] The utility model discloses a rear side structure schematic view. Figure 4 The utility model discloses a sectional view.
[0017] In the figure: 1, lower machine case, 2, upper machine case, 3, gear shaft, 4, bearing, 5, exhaust column, 6, movable plug, 7, sealing strip, 8, sealing ring, 9, jack, 10, sliding slot, 11, exhaust groove, 12, convex ring A, 13, sealing groove, 14, convex ring B, 15, threaded sleeve, 16, sealing pad, 17, oil pump, 18, oil pipe A, 19, filter, 20, oil pipe B, 21, cooler, 22, temperature gauge, 23, guide groove, 24, guide strip, 25, anti -slip pattern. Specific embodiments
[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.
[0019] For example, Figures 1-4As shown, the utility model discloses a kind of oil leakage prevention speed reducer, including lower machine box 1, the upper machine box 2 of being fixedly arranged above lower machine box 1, several gear shafts 3, the gear shaft 3 is rotatably connected with lower machine box 1 and upper machine box 2 by bearing 4, the leakage prevention assembly is equipped on lower machine box 1 and upper machine box 2, the leakage prevention assembly includes exhaust column 5, movable plug 6, sealing strip 7, several sealing rings 8 being fixedly arranged on sealing strip 7, connecting assembly, heat dissipation component, the jack 9 is set on the top wall of upper machine box 2, the exhaust column 5 is inserted into jack 9 and is fixedly connected with upper machine box 2 by connecting assembly, the bottom wall of exhaust column 5 is opened and has the sliding slot 10 matched with movable plug 6, the movable plug 6 is inserted into sliding slot 10 and is slidably connected with exhaust column 5, the exhaust groove 11 that is communicated with sliding slot 10 is opened on the outer side wall of exhaust column 5, the convex ring A 12 being fixedly arranged on the inner side wall of sliding slot 10 below movable plug 6 and exhaust groove 11, the sealing groove 13 matched with sealing strip 7 and sealing ring 8 is opened on the top wall of lower machine box 1 and the bottom wall of upper machine box 2, the sealing strip 7 and sealing ring 8 are inserted into sealing groove 13 and are fixedly arranged between lower machine box 1 and upper machine box 2 by screw, the sealing ring 8 is sleeved on bearing 4 and is fixedly connected with bearing 4.The utility model is assembled, movable plug 6 is inserted into sliding slot 10 inside, exhaust column 5 is inserted into jack 9 and is fixedly connected with upper machine box 2 by connecting assembly, convex ring A 12 is below movable plug 6, and the inner hole diameter of convex ring A 12 is less than the diameter of movable plug 6, prevent movable plug 6 from falling and play the role;Gear shaft 3 is rotatably connected with lower machine box 1 by bearing 4, sealing strip 7 and sealing ring 8 are inserted into sealing groove 13 on lower machine box 1 and make sealing ring 8 be sleeved on bearing 4, upper machine box 2 is covered on lower machine box 1 and is fixedly connected with lower machine box 1 by screw, make sealing strip 7 and sealing ring 8 be fixedly arranged between lower machine box 1 and upper machine box 2, and make sealing ring 8 be fixedly connected with bearing 4, since sealing strip 7 and sealing ring 8 are embedded in sealing groove 13 inside, play the role of improving sealing property;When speed reducer works for a long time, air in upper machine box 2 is expanded after being heated, the inside of upper machine box 2 is closed, when air pressure in the inside of upper machine box 2 rises, movable plug 6 is pushed and moves upwards, when movable plug 6 moves to the above of exhaust groove 11, air in the inside of upper machine box 2 will be discharged to the outside of machine box through exhaust groove 11, play the role of reducing the air pressure in the inside of upper machine box 2, avoid lubricating oil to be extruded and leak;As described above, the utility model has the beneficial effects of strong sealing property and reducing the air pressure in the inside of speed reducer for a long time, solve the problem that air in the inside of speed reducer is expanded after being heated, make the pressure in the inside of speed reducer become big, cause lubricating oil to be extruded and leak, if sealing element is not close tightly during the assembly process of speed reducer, cause the problem of serious oil leakage.
[0020] Preferably, the connecting assembly comprises a convex ring B14 fixedly arranged outside the exhaust column 5, a threaded sleeve 15, the convex ring B14 is located inside the upper case 2, the outer wall of the exhaust column 5 is provided with a thread, and the threaded sleeve 15 is screwed into the exhaust column 5, and the threaded sleeve 15 and the convex ring B14 are fixedly connected with the upper case 2. Since the outer wall of the exhaust column 5 is provided with a thread, the threaded sleeve 15 is screwed into the exhaust column 5 and tightened, so that the threaded sleeve 15 and the convex ring B14 are fixed on the inside and outside of the upper case 2 respectively, thereby fixing the exhaust column 5 with the upper case 2, and facilitating the disassembly and assembly of the exhaust column 5.
[0021] Preferably, the connecting assembly further comprises a sealing gasket 16 fixedly arranged below the threaded sleeve 15 and above the convex ring B14, and the sealing gasket 16 is fixedly connected with the upper case 2 after the threaded sleeve 15 is screwed into the exhaust column 5. Since the sealing gasket 16 is fixedly arranged below the threaded sleeve 15 and above the convex ring B14, when the threaded sleeve 15 and the convex ring B14 are fixed with the upper case 2, the sealing gasket 16 is fixed between the threaded sleeve 15 and the upper case 2 and between the convex ring B14 and the upper case 2, thereby sealing the connection.
[0022] Preferably, the heat dissipation assembly comprises an oil pump 17 fixedly arranged at the rear side of the lower case 1, an oil pipe A 18, a filter 19 fixedly arranged on the oil pipe A 18, an oil pipe B 20, a cooler 21 fixedly arranged on the oil pipe B 20, and a thermometer 22 fixedly arranged above the upper case 2, both ends of the oil pipe A 18 are respectively communicated with the inside of the lower case 1 and the oil inlet end of the oil pump 17, both ends of the oil pipe B 20 are respectively communicated with the inside of the upper case 2 and the oil outlet end of the oil pump 17, and the oil pump 17 is connected with an external controller. When the working environment temperature of the speed reducer is high (for example, in summer), the temperature of the lubricating oil in the speed reducer will continuously rise as the working time becomes longer, at this time, the lubricating oil temperature may not be quickly reduced by exhaust through the exhaust groove 11, and the worker can observe the thermometer 22, when the temperature is high, the worker operates the external controller to start the oil pump 17, the oil pump 17 sucks the lubricating oil in the lower case 1 into the oil pipe A 18, filters it through the filter 19 and then sends it into the oil pipe B 20, and the lubricating oil is cooled by the cooler 21 and then reenters the inside of the lower case 1, thereby achieving the effect of circulating heat dissipation, so that the temperature of the lubricating oil in the speed reducer is quickly reduced.
[0023] Preferably, a guide groove 23 is formed in the inner wall of the chute 10, and a guide strip 24 is fixedly arranged on the movable plug 6, and the guide strip 24 is inserted into the guide groove 23 and is in sliding connection with the guide column. Since the guide strip 24 is inserted into the guide groove 23 and is in sliding connection with the guide column, it plays a guiding role when the movable plug 6 moves.
[0024] Preferably, the outer side wall of the threaded sleeve 15 is provided with anti-skid lines 25. Since the outer side wall of the threaded sleeve 15 is provided with the anti-skid lines 25, the anti-skid lines 25 can prevent the threaded sleeve 15 from slipping when the threaded sleeve 15 is rotated.
[0025] Preferably, the bearing 4 is a sealed bearing 4, and the movable plug 6, the sealing strip 7 and the sealing ring 8 are all made of butyl rubber. Since the bearing 4 is a sealed bearing 4, the bearing 4 can avoid leaking lubricating oil. Since the movable plug 6, the sealing strip 7 and the sealing ring 8 are all made of butyl rubber, the movable plug 6, the sealing strip 7 and the sealing ring 8 have the characteristics of good air tightness, wear resistance and oil resistance.
[0026] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. An oil leakage-proof speed reducer, comprising a lower casing (1), an upper casing (2) fixedly arranged above the lower casing (1), and a plurality of gear shafts (3) rotatably connected with the lower casing (1) and the upper casing (2) through bearings (4), characterized in that: The lower case (1) and the upper case (2) are provided with a leakage prevention assembly, the leakage prevention assembly comprises an exhaust column (5), a movable plug (6), a sealing strip (7), a plurality of sealing rings (8) fixedly arranged on the sealing strip (7), a connecting assembly, a heat dissipation assembly, a jack (9) is arranged on the top wall of the upper case (2), the exhaust column (5) is fixedly connected with the upper case (2) through the connecting assembly after being inserted into the jack (9), a sliding groove (10) matched with the movable plug (6) is arranged on the bottom wall of the exhaust column (5), the movable plug (6) is slidably connected with the exhaust column (5) after being inserted into the sliding groove (10), an exhaust groove (11) penetrating through the sliding groove (10) is arranged on the outer side wall of the exhaust column (5), a convex ring A (12) located below the movable plug (6) and the exhaust groove (11) is fixedly arranged on the inner side wall of the sliding groove (10), a sealing groove (13) matched with the sealing strip (7) and the sealing ring (8) is arranged on the top wall of the lower case (1) and the bottom wall of the upper case (2), the sealing strip (7) and the sealing ring (8) are fixedly arranged between the lower case (1) and the upper case (2) through screws after being inserted into the sealing groove (13), and the sealing ring (8) is fixedly connected with the bearing (4) by being sleeved on the bearing (4).
2. An oil containment speed reducer as set forth in claim 1, characterized by: The connecting assembly comprises a convex ring B (14) fixedly arranged on the outer side of the exhaust column (5) and a threaded sleeve (15), the convex ring B (14) is located in the upper case (2), threads are arranged on the outer side wall of the exhaust column (5), and the threaded sleeve (15) is fixedly connected with the upper case (2) after being screwed into the exhaust column (5) together with the convex ring B (14).
3. An oil containment speed reducer as set forth in claim 2 wherein: The connecting assembly further comprises a sealing gasket (16) fixedly arranged below the threaded sleeve (15) and above the convex ring B (14), and the sealing gasket (16) is fixedly connected with the upper case (2) after the threaded sleeve (15) is screwed into the exhaust column (5).
4. An oil containment speed reducer as set forth in claim 1 wherein: The heat dissipation assembly comprises an oil pump (17) fixedly arranged on the rear side of the lower case (1), an oil pipe A (18), a filter (19) fixedly arranged on the oil pipe A (18), an oil pipe B (20), a cooler (21) fixedly arranged on the oil pipe B (20), and a temperature gauge (22) fixedly arranged above the upper case (2), the two ends of the oil pipe A (18) are respectively communicated with the inside of the lower case (1) and the oil inlet end of the oil pump (17), and the two ends of the oil pipe B (20) are respectively communicated with the inside of the upper case (2) and the oil outlet end of the oil pump (17).
5. An oil containment speed reducer as set forth in claim 1 wherein: A guide groove (23) is arranged on the inner side wall of the sliding groove (10), and a guide strip (24) is fixedly arranged on the movable plug (6), the guide strip (24) is slidably connected with the guide column by being inserted into the guide groove (23).
6. An oil containment speed reducer as set forth in claim 2 wherein: Anti-skid lines (25) are arranged on the outer side wall of the threaded sleeve (15).
7. An oil containment speed reducer as set forth in claim 1 wherein: The bearing (4) is a sealed bearing (4), and the movable plug (6), the sealing strip (7) and the sealing ring (8) are all made of butyronitrile rubber material.