A vertical pipeline-free forced self-lubricating reducer

Abstract

The present invention is a vertical pipeline-free forced self-lubricating reducer, including a housing, an intermediate shaft, an output shaft, a bearing seat, an input shaft, a bevel gear pair, a transparent cover, etc. Its innovation lies in that an oil pump ring is provided between the transparent cover and the bearing seat, which is sleeved on the outer periphery of the input shaft and rotates synchronously, and inclined blades are evenly distributed on the outer periphery. When the oil pump ring rotates, centrifugal force and thrust are used to suck and press the lubricating oil into the oil circuit structure in the housing, the bearing seat, and the transparent cover, and distribute it to each lubrication point to form a forced lubrication cycle. This design does not require an oil pump and pipelines, avoids related failures, and improves equipment reliability. Further arrangements include an oil suction groove, an oil supply groove, a lubricating oil channel structure, an oil distribution ring, an oil return hole, etc., to enhance the lubrication effect and ensure that each bearing is fully lubricated. An oil seal is also provided to prevent leakage, and an annular rib increases the rigidity of the oil pump ring blades and improves suction.

Description

Technical Field

[0001] The invention specifically relates to a vertical pipeline-free forced self-lubricating reducer. Background Art

[0002] When the reducer is installed vertically, a compensating oil tank or oil pump is usually used for forced lubrication in order to fully lubricate the upper bearing. When a compensating oil tank is used, the oil level of the lubricating oil is increased, which increases the energy of the gear rotation and oil stirring damage, causing the reducer temperature to rise, and the pressure on the oil seal under the output shaft increases, increasing the risk of oil leakage. At the same time, compared with forced lubrication by an oil pump, the use of a compensating oil tank requires more lubricating oil, which also means an increase in cost.

[0003] When forced lubrication is performed by an oil pump, for example, the Chinese invention patent application document with the publication number "CN112253732A" discloses a vertical reducer with oil injection lubrication, including an outer oil delivery pipe, an inner oil delivery pipe, and an oil injection pipe installed on the outside of the top of the housing. The inner oil delivery pipe is provided with multiple oil injection ports to spray oil on the gears. It can be seen that the oil pump and pipeline are usually arranged outside the housing and may be bumped during transportation and assembly. And after working for a period of time, the oil pump may have some problems, such as wear on the tooth surface, fatigue fracture of the shaft head of the oil pump shaft, loose joints and oil leakage, etc.

[0004] Therefore, in order to improve the reliability of the reducer as a whole, a vertical pipeline-free forced self-lubricating reducer was invented, which can absorb the advantages of forced lubrication of the compensating oil tank and oil pump, and solve the above-mentioned defects. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a vertical pipeline-free forced self-lubricating reducer in view of the above-mentioned deficiencies in the prior art, which has efficient lubrication, does not require oil pump pipelines, and improves the reliability and life of the equipment.

[0006] To achieve the above object, the present invention provides the following technical solutions: A vertical pipeline-free forced self-lubricating reducer comprises a housing, an intermediate shaft and an output shaft installed in the housing, the end of the housing is connected to a bearing seat, the bearing seat is rotatably connected to an input shaft, the end of the input shaft facing the inner side of the housing is provided with a bevel gear pair, the intermediate shaft is linked to an input gear pair meshing with the bevel gear pair, the output shaft is linked to an output gear pair meshing with the intermediate shaft, the bearing seat is connected to a transparent cover sealed with the input shaft, the transparent cover and the input shaft are rotatably connected via a first bearing, and is characterized in that: an oil pump ring is provided between the transparent cover and the bearing seat, the oil pump ring is sleeved on the outer periphery of the input shaft and the two rotate synchronously, a plurality of groups of blades are evenly distributed on the outer periphery of the oil pump ring, and the blades are arranged obliquely.

[0007] With the above technical solution, the pump oil ring rotates at high speed with the input shaft. The centrifugal force generated by its inclined blades during rotation and the thrust directed to the side of the housing can suck the lubricating oil in the housing into the pump oil ring. The housing, the bearing seat, and the transparent cover are provided with an oil circuit structure. The lubricating oil is pressed into the oil circuit structure and distributed to various places that need lubrication, forming a forced lubrication cycle. Compared with the traditional lubrication method that relies on the oil level or the oil pump, this active lubricating oil delivery method can more effectively deliver the lubricating oil to various parts that need lubrication, ensuring that key components such as bearings are fully lubricated, thereby improving the lubrication efficiency and extending the service life of the equipment. At the same time, the vertical pipeline-free forced self-lubricating reducer of the present invention does not need to be equipped with an oil pump, and there are no pipelines outside or inside, which avoids the physical damage that may be suffered by the oil pump and the pipeline, and improves the overall reliability of the equipment.

[0008] The above-mentioned vertical pipeline-free forced self-lubricating reducer can be further configured as follows: the bearing seat is penetrated by an oil suction groove, and the housing is provided with a first oil supply groove at one end corresponding to the oil suction groove, and the first oil supply groove connects the housing with the oil suction groove, the upper end of the intermediate shaft is rotatably connected to the housing through the second bearing, and the lower end is rotatably connected to the housing through the third bearing, the upper end of the output shaft is rotatably connected to the housing through the fourth bearing, and the lower end is rotatably connected to the housing through the fifth bearing, and a lubricating oil channel structure is provided between the bearing seat and the housing.

[0009] With the above technical solution, when the pump oil ring rotates, the lubricating oil in the housing can enter the cavity of the pump oil ring along the oil suction groove and the first oil supply groove, and be pressed into the lubricating oil channel structure, thereby being distributed to each lubrication point (the second bearing and the fourth bearing) for forced lubrication. It should be noted that when the reducer is installed, the housing is placed horizontally, that is, the output shaft is usually vertical, so the lubricating oil is usually distributed at the bottom of the housing, and the third bearing and the fourth bearing will be immersed in the lubricating oil, so there is no need to specially set up a lubricating oil channel structure.

[0010] The above-mentioned vertical pipeline-free forced self-lubricating reducer can be further configured as follows: the lubricating oil channel structure includes a first oil inlet hole arranged above the bearing seat and a second oil inlet hole arranged above the box body, one end of the first oil inlet hole corresponds to the pump oil ring, and the other end is connected to the second oil inlet hole.

[0011] By adopting the above technical solution, the pump oil ring rotates at high speed with the input shaft. The centrifugal force generated by its inclined blades during rotation and the thrust directed to the side of the housing can suck the lubricating oil in the housing from the oil suction groove and the first oil supply groove into the cavity of the pump oil ring, and press it into the first oil inlet hole, and then flow through the second oil inlet hole, and finally flow into each lubrication point (second bearing, fourth bearing) for forced lubrication.

[0012] The above-mentioned vertical pipeline-free forced self-lubricating reducer can be further configured as follows: a through cover is provided on the top of the box body, one end of the through cover is provided with a positioning groove corresponding to the upper end of the intermediate shaft, the end surface of the positioning groove is closed, the other end of the through cover is provided with a mounting hole corresponding to the upper end of the output shaft, the mounting hole is sealed and connected to the upper end of the output shaft, and the lubricating oil channel structure also includes a long groove arranged on the through cover, one end of the long groove is connected to the positioning groove, and the other end extends into the mounting hole.

[0013] With the above technical solution, the lubricating oil delivered by the second oil inlet hole will flow through the long groove and be distributed to the positioning groove and the mounting hole in turn, thereby lubricating the upper end of the intermediate shaft and the upper end rotation point of the output shaft. At the same time, the positioning groove is closed and can store part of the lubrication, thereby ensuring that the lubricating oil does not flow into the upper end of the output shaft.

[0014] The above-mentioned vertical pipeline-free forced self-lubricating reducer can be further configured as follows: the housing is connected to an oil separator ring distributed above the second bearing, the end surface of the oil separator ring is provided with a plurality of groups of oil collecting grooves, and a threaded through hole penetrates the middle of the oil collecting groove.

[0015] With the above technical solution, the end face of the oil separator ring is higher than the end face of the housing during installation, so that the lubrication first flows to the top of the oil separator ring and then flows to the second bearing and the fourth bearing. The oil separator ring has two threaded through holes, so that the lubricating oil can enter the second bearing below, and can also be used for disassembly. An oil collecting groove is added above the two threaded through holes to allow more lubricating oil to flow into the second bearing.

[0016] The above-mentioned vertical pipeline-free forced self-lubricating reducer can be further configured as follows: a main oil chamber and a second oil supply groove are provided in the transparent cover, the second oil supply groove is connected to the other end of the oil suction groove, a boss is provided on the outside of the transparent cover, a transverse oil return hole and a longitudinal oil return hole are provided in the boss, one end of the transverse oil return hole extends to be connected to the main oil chamber, and the other end is connected to one end of the longitudinal oil return hole, a main oil return hole connected to the housing is provided on the housing, the bearing seat corresponds to a transition oil return hole corresponding to the main oil return hole, one end of the transition oil return hole is connected to the main oil return hole, and the other end is connected to the longitudinal oil return hole.

[0017] With the above technical solution, when the pump oil ring rotates, the lubricating oil in the housing can not only flow into the cavity of the pump oil ring along the oil suction groove and the first oil supply groove, but also flow into the transition oil return hole along the main oil return hole on the housing, and then flow into the longitudinal oil return hole, and then flow into the main oil chamber in the transparent cover through the transverse oil return hole, and finally be sucked into the cavity of the pump oil ring by the pump oil ring, and pressed into the lubricating oil channel structure, so as to be distributed to each lubrication point (second bearing, fourth bearing) for forced lubrication. This solution can not only enhance the lubrication effect, but also the lubricating oil in the main oil chamber can lubricate the first bearing.

[0018] The above-mentioned vertical pipeline-free forced self-lubricating reducer can be further configured as follows: a plurality of groups of sixth bearings are arranged between the input shaft and the bearing seat, the plurality of groups of sixth bearings are distributed on the same side of the pump oil ring, and the outer diameter of the blade of the pump oil ring is larger than the outer diameter of the sixth bearing or the outer diameter of the first bearing.

[0019] By adopting the above technical solution, the outer diameter of the blades of the oil pump ring is larger than the outer rings of the sixth bearing and the first bearing, and the high-speed rotation and oil pumping characteristics of the sixth bearing place the large diameter position of the oil pump ring blades in a relatively closed space, providing conditions for the oil pump ring to suck in and squeeze out lubricating oil.

[0020] The above-mentioned vertical pipeline-free forced self-lubricating reducer can be further configured as follows: an adjusting nut is provided on the other side of the pump oil ring, the adjusting nut is detachably connected to the input shaft, a stop washer is provided between the adjusting nut and the pump oil ring, and the stop washer is sleeved on the outer periphery of the input shaft.

[0021] By adopting the above technical solution, the axial clearance of the sixth bearing or the first bearing can be adjusted through the pump oil ring, the stop washer and the adjusting nut, and the input shaft can be locked on the bearing seat.

[0022] The above-mentioned vertical pipeline-free forced self-lubricating reducer can be further configured as follows: a first oil seal is provided between the transparent cover and the input shaft, and a second oil seal is provided between the output shaft and the through cover.

[0023] The above technical solution is adopted to avoid leakage at the connection between the transparent cover and the input shaft, and at the connection between the output shaft and the through cover.

[0024] The above-mentioned vertical pipeline-free forced self-lubricating reducer can be further configured as follows: an annular rib is also provided on the outer periphery of the pump oil ring, and the annular rib is connected to several groups of blades at the same time.

[0025] By adopting the above technical solution, the rigidity of the blade is improved by providing annular ribs, thereby improving the suction force of the pump oil ring.

[0026] The present invention is further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is an overall cross-sectional schematic diagram of an embodiment of the present invention; Figure 2 A schematic diagram of a box according to an embodiment of the present invention; Figure 3 A partial cross-sectional schematic diagram of an embodiment of the present invention; Figure 4 Schematic diagram of the internal structure of an embodiment of the present invention; Figure 5 A schematic diagram of a through cover according to an embodiment of the present invention; Figure 6 Schematic diagram of the transparent cover structure of an embodiment of the present invention Figure 1 ; Figure 7 Schematic diagram of the transparent cover structure of an embodiment of the present invention Figure 2 ; Figure 8 A schematic diagram of an oil separator ring according to an embodiment of the present invention; Fig. 9 Schematic diagram of a pump oil ring according to an embodiment of the present invention.

[0028] Reference numerals: housing 1, first oil supply groove 1a, second oil inlet hole 1b, main oil return hole 1c; intermediate shaft 2, output shaft 3; bearing seat 4, oil suction groove 4a, first oil inlet hole 4b, transition oil return hole 4c; input shaft 5, bevel gear pair 6, input gear pair 7, output gear pair 8; transparent cover 9, main oil chamber 9a, second oil supply groove 9b, boss 9c, transverse oil return hole 9d, longitudinal oil return hole 9e; first bearing 10, first oil seal 11; pump oil ring 12, blade 12a, annular rib 12b; sixth bearing 13, third bearing 14, fourth bearing 15; through cover 16, positioning groove 16a, mounting hole 16b, long groove 16c; second bearing 17, second oil seal 18; oil distributor ring 19, oil collecting groove 19a, threaded through hole 19b; adjusting nut 20, retaining washer 21, fifth bearing 22. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figures 1 to 9 A vertical pipeline-free forced self-lubricating reducer shown in the figure includes a housing 1 and an intermediate shaft 2 and an output shaft 3 installed in the housing 1. The end of the housing 1 is connected to a bearing seat 4, and the bearing seat 4 is rotatably connected to an input shaft 5. The end of the input shaft 5 facing the inner side of the housing 1 is provided with a bevel gear pair 6. The intermediate shaft 2 is linked to an input gear pair 7 meshing with the bevel gear pair 6. The output shaft 3 is linked to an output gear pair 8 meshing with the intermediate shaft 2. The bearing seat 4 is connected to a transparent cover 9 sealed with the input shaft 5. The transparent cover 9 and the input shaft 5 are rotatably connected through a first bearing 10. A first oil seal 11 is also provided between the transparent cover 9 and the input shaft 5 to avoid the connection between the transparent cover 9 and the input shaft 5.

[0031] An oil pump ring 12 is provided between the transparent cover 9 and the bearing seat 4. The oil pump ring 12 is sleeved on the outer periphery of the input shaft 5 and the two rotate synchronously. Six groups of blades 12a are evenly distributed on the outer periphery of the oil pump ring 12. The blades 12a are tilted, and the tilting direction must correspond to the rotation direction of the input shaft 5. For example, when the input shaft 5 rotates clockwise, the blades 12a of the oil pump ring 12 must tilt to the right, and vice versa, the blades 12a of the oil pump ring 12 must tilt to the left, so that when the oil pump ring 12 rotates, the lubricating oil will be sucked into the cavity of the oil pump ring 12. The outer periphery of the oil pump ring 12 is also provided with an annular rib 12b, which is connected to the six groups of blades 12a at the same time to improve the rigidity of the blades 12a, thereby improving the suction force of the oil pump ring 12.

[0032] Two groups of sixth bearings 13 are arranged between the input shaft 5 and the bearing seat 4. The two groups of sixth bearings 13 are distributed on the same side of the pump oil ring 12. The outer diameter of the blade 12a of the pump oil ring 12 is larger than the outer diameter of the sixth bearing 13 or the outer diameter of the first bearing 10. The outer diameter of the blade 12a of the pump oil ring 12 is larger than the outer ring of the sixth bearing 13 and the first bearing 10. In addition, the high-speed rotation and oil pumping characteristics of the sixth bearing 13 make the large-diameter position of the blade 12a of the pump oil ring 12 in a relatively closed space, providing conditions for the pump oil ring 12 to suck in and press out lubricating oil.

[0033] The bearing seat 4 is penetrated by an oil suction groove 4a, and the housing 1 is provided with a first oil supply groove 1a at one end corresponding to the oil suction groove 4a. The first oil supply groove 1a connects the housing 1 with the oil suction groove 4a. The upper end of the intermediate shaft 2 is rotatably connected to the housing 1 through the second bearing 17, and the lower end is rotatably connected to the housing 1 through the third bearing 14. The upper end of the output shaft 3 is rotatably connected to the housing 1 through the fourth bearing 15, and the lower end is rotatably connected to the housing 1 through the fifth bearing 22. A lubricating oil passage structure is provided between the bearing seat 4 and the housing 1. The lubricating oil passage structure includes a first oil inlet hole 4b arranged above the bearing seat 4 and a second oil inlet hole 1b arranged above the housing 1. One end of the first oil inlet hole 4b corresponds to the pump oil ring 12, and the other end is connected to the second oil inlet hole 1b.

[0034] A main oil chamber 9a and a second oil supply groove 9b are provided in the transparent cover 9. The second oil supply groove 9b is connected to the other end of the oil suction groove 4a. A boss 9c is provided on the outside of the transparent cover 9. A transverse oil return hole 9d and a longitudinal oil return hole 9e are provided in the boss 9c. One end of the transverse oil return hole 9d extends to be connected to the main oil chamber 9a, and the other end is connected to one end of the longitudinal oil return hole 9e. A main oil return hole 1c connected to the inside of the housing 1 is provided on the housing 1. The bearing seat 4 corresponds to a transition oil return hole 4c corresponding to the main oil return hole 1c. One end of the transition oil return hole 4c is connected to the main oil return hole 1c, and the other end is connected to the longitudinal oil return hole 9e.

[0035] A through cover 16 is provided above the housing 1. A positioning groove 16a corresponding to the upper end of the intermediate shaft 2 is provided at one end of the through cover 16. The end surface of the positioning groove 16a is closed. A mounting hole 16b corresponding to the upper end of the output shaft 3 is provided at the other end of the through cover 16. A second oil seal 18 is provided between the output shaft 3 and the through cover 16. The lubricating oil passage structure also includes a long groove 16c provided on the through cover 16. One end of the long groove 16c is connected to the positioning groove 16a and the other end extends into the mounting hole 16b. The lubricating oil transported by the second oil inlet hole 1b will flow through the long groove 16c and be distributed to the positioning groove 16a and the mounting hole 16b in turn, thereby lubricating the upper end of the intermediate shaft 2 and the upper end rotation point of the output shaft 3. At the same time, the positioning groove 16a is closed and can store part of the lubrication, thereby ensuring that the lubricating oil will not all flow into the upper end of the output shaft 3.

[0036] The housing 1 is connected to an oil separator 19 distributed above the second bearing 17. The end face of the oil separator 19 is provided with two sets of oil collecting grooves 19a, and a threaded through hole 19b is passed through the middle of the oil collecting groove 19a. During installation, the end face of the oil separator 19 is higher than the end face of the housing 1, so that the lubrication first flows to the top of the oil separator 19, and then flows to the second bearing 17 and the fourth bearing 15. The oil separator 19 has two threaded through holes 19b, so that the lubricating oil can enter the second bearing 17 below, and can also be used for disassembly. An additional oil collecting groove 19a is provided above the two threaded through holes 19b, so that more lubricating oil can flow into the second bearing 17.

[0037] An adjusting nut 20 is provided on the other side of the pump oil ring 12, and the adjusting nut 20 is detachably connected to the input shaft 5. A stop washer 21 is provided between the adjusting nut 20 and the pump oil ring 12, and the stop washer 21 is sleeved on the outer periphery of the input shaft 5. The axial clearance of the sixth bearing 13 or the first bearing 10 can be adjusted through the pump oil ring 12, the stop washer 21, and the adjusting nut 20, and the input shaft 5 can be locked on the bearing seat 4.

[0038] The lubrication principle of this embodiment is as follows: When the pump oil ring 12 rotates, the lubricating oil in the housing 1 can not only enter the cavity of the pump oil ring 12 along the oil suction groove 4a and the first oil supply groove 1a, but also flow into the transition oil return hole 4c along the main oil return hole 1c on the housing 1, and then flow into the longitudinal oil return hole 9e, and then flow into the main oil chamber 9a in the transparent cover 9 through the transverse oil return hole 9d, and finally enter the oil suction groove 4a through the second oil supply groove 9b to be sucked into the cavity of the pump oil ring 12. The lubricating oil is then pressed into the first oil inlet hole 4b, and then flows through the second oil inlet hole 1b, and then flows through the long groove 16c of the through cover 16, and is distributed to the mounting hole 16b and the positioning groove 16a in sequence, and lubricates the fourth bearing 15 at the mounting hole 16b. Since an oil separator ring 19 is provided at the positioning groove 16a, the end surface of the oil separator ring 19 is higher than the end surface of the housing 1 during installation, so that the lubrication first flows to the top of the oil separator ring 19, and the two oil collecting grooves 19a of the oil separator ring 19 store part of the lubricating oil, which then enters the second bearing 17 through the threaded through hole 19b for lubrication.

[0039] It can be seen from the lubrication principle that the lubricating oil in the input shaft 5 can circulate with the oil pool in the housing 1 to avoid excessive local temperature rise.

[0040] It should also be noted that when the reducer is installed, the box 1 is placed horizontally. Figure 1 As shown in the direction, the lubricating oil is usually distributed at the lower part of the housing 1, and the third bearing 14 and the fourth bearing 15 are immersed in the lubricating oil, so there is no need to specially set up a lubricating oil channel structure.

Claims

1. A vertical pipeline-free forced self-lubricating reducer, comprising a housing, an intermediate shaft and an output shaft installed in the housing, the end of the housing is connected to a bearing seat, the bearing seat is rotatably connected to an input shaft, the end of the input shaft facing the inner side of the housing is provided with a bevel gear pair, the intermediate shaft is linked to an input gear pair meshing with the bevel gear pair, the output shaft is linked to an output gear pair meshing with the intermediate shaft, the bearing seat is connected to a transparent cover sealed with the input shaft, the transparent cover is rotatably connected to the input shaft through a first bearing, and is characterized in that: An oil pump ring is arranged between the transparent cover and the bearing seat. The oil pump ring is sleeved on the outer periphery of the input shaft and the two rotate synchronously. A plurality of groups of blades are evenly distributed on the outer periphery of the oil pump ring, and the blades are arranged obliquely.

2. A vertical pipeline-free forced self-lubricating reducer according to claim 1, characterized in that: The bearing seat is penetrated by an oil suction groove, and the housing is provided with a first oil supply groove at one end corresponding to the oil suction groove, and the first oil supply groove connects the inside of the housing with the oil suction groove. The upper end of the intermediate shaft is rotatably connected to the housing through the second bearing, and the lower end is rotatably connected to the housing through the third bearing. The upper end of the output shaft is rotatably connected to the housing through the fourth bearing, and the lower end is rotatably connected to the housing through the fifth bearing. A lubricating oil channel structure is provided between the bearing seat and the housing.

3. A vertical pipeline-free forced self-lubricating reducer according to claim 2, characterized in that: The lubricating oil channel structure includes a first oil inlet hole arranged above the bearing seat and a second oil inlet hole arranged above the housing. One end of the first oil inlet hole corresponds to the pump oil ring, and the other end is connected to the second oil inlet hole.

4. A vertical pipeline-free forced self-lubricating reducer according to claim 3, characterized in that: A through cover is provided on the top of the box body, and a positioning groove corresponding to the upper end of the intermediate shaft is provided at one end of the through cover, and the end surface of the positioning groove is closed. A mounting hole corresponding to the upper end of the output shaft is provided at the other end of the through cover, and the mounting hole is sealed and connected to the upper end of the output shaft. The lubricating oil channel structure also includes a long groove provided on the through cover, and one end of the long groove is connected to the positioning groove, and the other end extends into the mounting hole.

5. A vertical pipeline-free forced self-lubricating reducer according to claim 4, characterized in that: The box body is connected with an oil distribution ring distributed above the second bearing, and the end surface of the oil distribution ring is provided with a plurality of groups of oil collecting grooves, and the middle part of the oil collecting groove is penetrated by a threaded through hole.

6. A vertical pipeline-free forced self-lubricating reducer according to any one of claims 2 to 5, characterized in that: A main oil chamber and a second oil supply groove are provided in the transparent cover, and the second oil supply groove is connected with the other end of the oil suction groove. A boss is provided on the outside of the transparent cover, and a transverse oil return hole and a longitudinal oil return hole are provided in the boss. One end of the transverse oil return hole extends to be connected with the main oil chamber, and the other end is connected with one end of the longitudinal oil return hole. A main oil return hole connected with the housing is provided on the box body, and the bearing seat corresponds to a transition oil return hole corresponding to the main oil return hole. One end of the transition oil return hole is connected with the main oil return hole, and the other end is connected with the longitudinal oil return hole.

7. A vertical pipeline-free forced self-lubricating reducer according to any one of claims 1 to 5, characterized in that: A plurality of sixth bearings are arranged between the input shaft and the bearing seat, and the plurality of sixth bearings are distributed on the same side of the pump oil ring. The outer diameter of the blades of the pump oil ring is larger than the outer diameter of the sixth bearing or the outer diameter of the first bearing.

8. The vertical pipeline-free forced self-lubricating reducer according to claim 7 is characterized in that: An adjusting nut is arranged on the other side of the pump oil ring. The adjusting nut is detachably connected to the input shaft. A stop washer is arranged between the adjusting nut and the pump oil ring. The stop washer is sleeved on the outer periphery of the input shaft.

9. A vertical pipeline-free forced self-lubricating reducer according to claim 4 or 5, characterized in that: A first oil seal is provided between the transparent cover and the input shaft, and a second oil seal is provided between the output shaft and the through cover.

10. A vertical pipeline-free forced self-lubricating reducer according to any one of claims 1 to 5, characterized in that: The outer periphery of the pump oil ring is also provided with an annular rib, and the annular rib is connected to several groups of blades at the same time.

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