CN210265706U - Totally-enclosed integrated hollow RV reducer - Google Patents

Abstract

The utility model provides a cavity formula RV speed reducer in totally enclosed formula one-piece type, its characterized in that: the device comprises an angular contact ball bearing, a cycloid wheel, a pin gear shell, an output disc rack, a duplicate gear, an eccentric shaft, a planet wheel, an input shaft, a through pipe, a motor mounting sealing flange, a servo motor, an output end body, an inner deep groove ball bearing, an outer deep groove ball bearing and a framework sealing ring; the input shaft is fixed on the servo motor, the servo motor is fixedly installed on the motor installation sealing flange, the duplex big teeth of the duplex gear are meshed with the motor input shaft, the duplex small teeth of the duplex gear are meshed with the planet wheels, the top outer wall of the duplex gear is connected with the motor installation sealing flange through the outer deep groove ball bearing, and the bottom outer wall of the duplex gear is connected with the output disc frame through the inner deep groove ball bearing. In RV speed reducer technical field, it is big to have the cavity formula RV speed reducer assembly degree of difficulty, problem that use cost is high, the utility model provides a speed reducer simple to handle.

Description

Totally-enclosed integrated hollow RV reducer

Technical Field

The utility model relates to a RV speed reducer technical field especially relates to a cavity formula RV speed reducer in totally enclosed formula one-piece type.

Background

The RV reducer is a novel reducer developed on the basis of cycloidal pin gear transmission. There are two-stage speed reduction structure: the first stage is a planetary speed reduction structure, and the second stage is a cycloidal pin gear speed reduction structure. The cycloidal-pin gear planetary transmission mechanism has the advantages of high rigidity, high precision, large torque, high transmission efficiency and the like, has smaller volume and larger overload capacity than the simple cycloidal-pin gear planetary transmission, and gradually replaces the simple cycloidal-pin gear planetary transmission and harmonic transmission to a great extent in the transmission mechanism of the Japanese robot.

Fig. 1 is a structural view of a hollow RV reducer. The main parts are as follows: the device comprises an angular contact ball bearing 1, a cycloid wheel 2, a pin gear shell 3, an output disc rack 4, an inner deep groove ball bearing 5, an eccentric shaft 6, a planet wheel 7, an input shaft 8 and a duplicate gear 9. The input shaft 8 drives the duplicate gear 9 to be meshed with the planet wheel 7 to form a first-stage planet speed reduction structure; the planet wheel 7 is arranged on the eccentric shaft 6 to drive the eccentric shaft 6 to run, the eccentric shaft 6 drives the cycloidal wheel 2 to be meshed with the needle gear shell 3 and the roller pin, and when the needle gear shell 3 is used as a fixed end, the output disc frame 4 is used as an output end to form a second-stage cycloidal pin wheel speed reducing structure. Wherein the duplicate gear 9 is composed of two concentric gears of a duplicate big tooth and a duplicate small tooth.

For a hollow RV reducer, a user generally needs to face: designing and manufacturing the main precise connecting parts for mounting the flange of the motor, the integral seal of the speed reducer and the like. And the method puts high precision requirements on the processing and manufacturing of parts and has higher installation precision. Designated grease must be added into the RV reducer cavity, and 90% of the internal space needs to be filled up with the grease. The workload is high in precision requirement and long in period, and the consistency of assembly quality is difficult to ensure, so that the use of a user is very inconvenient.

The above problems are particularly prominent when the hollow RV reducer is mounted on an external shaft of an industrial robot and various rotary tables. The fully-sealed integrated hollow RV reducer is required to be designed, so that the using difficulty and the using cost of a user can be greatly reduced, and the assembly consistency can be ensured.

SUMMERY OF THE UTILITY MODEL

For overcoming the problem that the cavity formula RV speed reducer assembly degree of difficulty among the prior art is big, use cost is high, provide a totally enclosed formula one-piece type cavity formula RV speed reducer, its characterized in that: the device comprises an angular contact ball bearing, a cycloid wheel, a pin gear shell, an output disc rack, a duplicate gear, an eccentric shaft, a planet wheel, an input shaft, a through pipe, a motor mounting sealing flange, a servo motor, an output end body, an inner deep groove ball bearing, an outer deep groove ball bearing and a framework sealing ring; the input shaft is fixed on a servo motor, the servo motor is fixedly arranged on a motor mounting sealing flange, the big duplex teeth of the duplex gear are meshed with the motor input shaft, the small duplex teeth of the duplex gear are meshed with the planet wheels, the top outer wall of the duplex gear is connected with the motor mounting sealing flange through an outer deep groove ball bearing, the bottom outer wall of the duplex gear is connected with an output disc frame through an inner deep groove ball bearing, the planet wheels are sleeved at the tail end of an eccentric shaft, the eccentric shaft is connected with the output disc frame through a conical roller bearing on an eccentric wheel concentric circle, the outer edge of the output disc frame is connected with a pin gear shell through an angular contact ball bearing, the pin gear shell is fixed on the motor mounting sealing flange through bolts, a framework sealing ring is arranged between the through pipe and the motor mounting sealing flange, and the top of the through pipe is connected with the framework sealing ring, the bottom is connected with the output end disk frame, and the output end body is fixedly connected with the output end disk frame.

Preferably, the servo motor is mounted on the motor mounting sealing flange through a bolt, the motor mounting sealing flange is provided with a speed reducer flange, the speed reducer flange is arranged at the top of the speed reducer, and other parts of the speed reducer flange are sealing structures.

Through adopting above-mentioned technical scheme, servo motor installs on motor installation sealing flange, just on motor installation sealing flange located the speed reducer flange, the speed reducer flange is used for the sealed and the stiff end of speed reducer top to and carry out sealing connection through motor mounting flange and motor, guarantee the sealed effect at speed reducer top.

Preferably, the input shaft is sleeved on a motor shaft of the servo motor, the input shaft is fixed with the motor shaft of the servo motor through a screw, a gear shaft is arranged at the top of the input shaft, and the gear shaft is meshed with the duplex large teeth of the duplex gear.

By adopting the technical scheme, the input shaft is sleeved on the motor shaft of the servo motor and is driven by the motor, the input shaft sleeve is fixed on the motor through a screw, the input shaft and the motor shaft are ensured to have the same concentricity when rotating, the gear shaft on the input shaft is meshed with the duplicate gear to drive the duplicate big gear to rotate, and therefore the duplicate small gear and the planet gear are in meshed transmission.

Preferably, the vent pipe is a tubular structure with an upper layer and a lower layer, the upper pipe wall of the vent pipe is smaller than the thickness of the lower pipe wall, the upper inner diameter and the lower inner diameter of the vent pipe are the same, the bottom of the vent pipe is connected with a flange, the flange is provided with threaded holes in a circumferential array, and the flange is provided with threaded connecting holes in a circumferential array.

Through adopting above-mentioned technical scheme, the part in the through hole of cavity RV speed reducer is installed to the lead wire pipe for the through hole is sealed, and the internal diameter homogeneous phase of lead wire pipe, the upper layer external diameter of lead wire pipe is little, and the outside can suit duplicate gear, and can not contact with duplicate gear, and the lower floor and the upper strata of lead wire pipe are than thicker, can fix with the output plate rail through the screw hole on the bottom ring flange, and the intensity of connecting can be guaranteed to thicker pipe wall.

Preferably, the upper end of the through pipe is connected with a speed reducer flange through a framework sealing ring, the lower end of the through pipe is connected with an output tray frame through a bolt, and a sealing glue or an O-shaped sealing ring is adopted to seal the contact surface of the through pipe.

Through adopting above-mentioned technical scheme, connect with the skeleton seal circle between the upper end of lead wire pipe and the speed reducer flange, the connection of lead wire pipe lower extreme and output plate rail frame all adopts sealed mode to go on, sealed glue or "O" type sealing washer can be with two-layer about the speed reducer and the connection of the through hole inner wall of speed reducer one sealed whole.

Preferably, the skeleton sealing ring is divided into an inner ring and an outer ring, the outer ring of the skeleton sealing ring is fixed on the speed reducer flange, and the inner ring of the skeleton sealing ring and the outer wall of the through pipe perform friction motion.

Through adopting above-mentioned technical scheme, when skeleton seal circle is connecting speed reducer flange and vent pipe, fixed connection between skeleton seal circle's outer lane and the speed reducer flange seals through sealed mode, and skeleton seal circle's inner circle and vent pipe take place relative friction at the rotation in-process, guarantee that vent pipe can and the speed reducer flange between take place relative rotation.

Preferably, the duplicate gear surrounds the upper layer of the through pipe and is not in contact with the through pipe, the duplicate big teeth and the duplicate small teeth of the duplicate gear are arranged on the outer wall of the duplicate gear, the duplicate big teeth are arranged above the duplicate small teeth, and the duplicate small teeth are meshed with the planet gears.

Through adopting above-mentioned technical scheme, duplicate gear fixes respectively on speed reducer flange and output plate rail, does not take place the contact with the lead wire pipe, and duplicate gear can be with the rotational speed transmission that is exported by the motor to the planet wheel on, and the same one side of RV speed reducer is arranged in to the eccentric shaft that has the planet wheel with motor and the cooperation through big tooth of pair and pair toothlet, realizes first-stage speed reduction, also can adapt to the transmission environment at the cavity speed reducer simultaneously.

Preferably, the side walls of the upper end and the lower end of the dual gear are respectively fixedly connected with the inner rings of the inner deep groove ball bearing and the outer deep groove ball bearing, the outer ring of the inner deep groove ball bearing is fixedly connected with the motor mounting sealing flange, and the outer ring of the outer deep groove ball bearing is fixedly connected with the output tray frame.

By adopting the technical scheme, the upper end and the lower end of the dual gear are connected by the inner deep groove ball bearing and the outer deep groove ball bearing, so that the dual gear only plays a role in transferring the intermediate rotating speed, can be in full contact with grease, and ensures the lasting stability of the first-stage speed reduction.

Preferably, 85-95% of grease is added into the fully sealed integral hollow RV reducer.

By adopting the technical scheme, enough grease is added into the speed reducer, a user does not need to add the grease by himself, the installation procedure is simplified, and the use efficiency is improved.

Preferably, the output end tray frame is an annular sealing structure, a countersunk hole for fixing a bolt is formed in the surface of the output end tray frame, and the output end body is connected with the output end tray frame through the bolt.

Through adopting above-mentioned technical scheme, the output plate rail is the output at speed reducer top, adopts seal structure also to guarantee the sealed of speed reducer bottom simultaneously, and the counter sink of the fixing bolt who is equipped with can be used for carrying out bolted connection with the output body, and the connected mode is simple, easily the operation.

To sum up, the utility model discloses following advantage has:

firstly, the structure is provided with a full sealing structure. The RV reducer is added with a proper amount of grease before leaving a factory, and a user does not need to consider the problems of grease addition and sealing.

And secondly, the servo motor is connected with the RV reducer. A user does not need to consider the design and manufacture of a mounting flange, the precision assembly and the motor model selection installation, the use difficulty and the use cost of the RV reducer are greatly reduced, and the performance consistency after simple assembly is ensured.

And thirdly, the output structure of the hollow RV reducer is not changed. The output end body is fixed on an output disc frame of the RV reducer through screws. The needle gear shell is used as a fixed end and is connected with the fixed end body. The motor is used as an input end and is connected with the RV reducer in a full-sealed mode to form a whole.

Drawings

FIG. 1 is a schematic diagram of a hollow RV reducer;

fig. 2 is a structural view of a fully sealed, integrated, hollow RV reducer.

Reference numerals: 1. angular contact ball bearings; 2. a cycloid wheel; 3. a pin gear housing; 4. an output tray frame; 5. a duplicate gear; 6. an eccentric shaft; 7. a planet wheel; 8. an input shaft; 9. a through pipe; 10. a sealing flange is arranged on the motor; 11. a servo motor; 12. an output end body; 13. an inner deep groove ball bearing; 14. an outer deep groove ball bearing; 15. skeleton sealing washer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1

As shown in fig. 1 and 2: the utility model provides a totally enclosed formula one-piece type cavity formula RV speed reducer which characterized in that: the device comprises an angular contact ball bearing 1, a cycloid wheel 2, a pin gear shell 3, an output disc rack 4, a duplicate gear 5, an eccentric shaft 6, a planet wheel 7, an input shaft 8, a wire passing pipe 9, a motor mounting sealing flange 10, a servo motor 11, an output end body 12, an inner deep groove ball bearing 13, an outer deep groove ball bearing 14 and a framework sealing ring 15; an input shaft 8 is fixed on a servo motor 11, the servo motor 11 is fixedly arranged on a motor mounting sealing flange 10, big duplex teeth of a duplex gear 5 are meshed with the motor input shaft 8, small duplex teeth of the duplex gear 5 are meshed with a planet wheel 7, the outer wall of the top of the duplex gear 5 is connected with the motor mounting sealing flange 10 through an outer deep groove ball bearing 14, the outer wall of the bottom of the duplex gear 5 is connected with an output disc rack 4 through an inner deep groove ball bearing 13, the planet wheel 7 is sleeved at the tail end of an eccentric shaft 6, the eccentric shaft 6 is connected with the output disc rack 4 through a conical roller bearing on a concentric circle of the eccentric wheel, the outer edge of the output disc rack 4 is connected with a pin gear shell 3 through an angular contact ball bearing 1, the pin gear shell 3 is fixed on the motor mounting sealing flange 10 through bolts, a framework sealing ring 15 is arranged between a wire passing pipe 9 and the motor mounting sealing flange 10, and the top of, the bottom is connected with the output end disk frame, and the output end body 12 is fixedly connected with the output end disk frame 4.

As shown in fig. 1 and 2: the servo motor 11 is installed on the motor installation sealing flange 10 through bolts, the motor installation sealing flange 10 is provided with a speed reducer flange, the speed reducer flange is arranged at the top of the speed reducer, and other parts of the speed reducer flange are sealing structures. The servo motor 11 is installed on the motor installation sealing flange 10, the motor installation sealing flange 10 is arranged on the speed reducer flange, the speed reducer flange is used for sealing the top of the speed reducer and connecting the top of the speed reducer with a fixed end, the motor installation flange is in sealing connection with the motor, and the sealing effect of the top of the speed reducer is guaranteed.

As shown in fig. 1 and 2: the input shaft 8 is sleeved on a motor shaft of the servo motor 11, the input shaft 8 is fixed with the motor shaft of the servo motor 11 through a screw, a gear shaft is arranged at the top of the input shaft 8, and the gear shaft is meshed with the duplex large teeth of the duplex gear 5. The input shaft 8 is sleeved on a motor shaft of the servo motor 11, the motor drives the input shaft 8 sleeve, the input shaft 8 sleeve is fixed on the motor through a screw, the input shaft 8 and the motor shaft are guaranteed to have the same concentricity when rotating, a gear shaft on the input shaft 8 is meshed with the duplicate gear 5 to drive the duplicate large teeth to rotate, and therefore the duplicate small teeth and the planet gear 7 are in meshed transmission.

As shown in fig. 1 and 2: the vent pipe 9 is a tubular structure with an upper layer and a lower layer, the upper layer pipe wall of the vent pipe 9 is smaller than the thickness of the lower layer pipe wall, the upper layer and the lower layer of the vent pipe 9 have the same inner diameter, the bottom of the vent pipe 9 is connected with a flange, threaded holes are arranged in a circumferential array on the flange, and threaded connecting holes are arranged in a circumferential array on the flange. The part in the through hole of cavity RV speed reducer is installed to lead to pipe 9 for the through hole is sealed, and the internal diameter homogeneous phase of lead to pipe 9, and the upper layer external diameter of lead to pipe 9 is little, and the outside can suit duplicate gear 5, and can not take place the contact with duplicate gear 5, and the lower floor and the upper strata of lead to pipe 9 are than thicker, can fix through screw hole on the bottom ring flange and output plate rail 4, and the intensity of connecting can be guaranteed to the pipe wall that is thicker.

As shown in fig. 1 and 2: the upper end of the through pipe 9 is connected with a speed reducer flange through a framework sealing ring 15, the lower end of the through pipe 9 is connected with the output disc rack 4 through bolts, and a sealing glue or an O-shaped sealing ring is adopted to seal the contact surface of the through pipe 9. The upper end of the through pipe 9 is connected with the speed reducer flange through a framework sealing ring 15, the lower end of the through pipe 9 is connected with the output disc rack 4 in a sealing mode, and the upper layer and the lower layer of the speed reducer and the inner wall of the through hole of the speed reducer can be connected into a sealed whole through sealant or an O-shaped sealing ring.

Example 2

As shown in fig. 1 and 2: the utility model provides a totally enclosed formula one-piece type cavity formula RV speed reducer which characterized in that: the device comprises an angular contact ball bearing 1, a cycloid wheel 2, a pin gear shell 3, an output disc rack 4, a duplicate gear 5, an eccentric shaft 6, a planet wheel 7, an input shaft 8, a wire passing pipe 9, a motor mounting sealing flange 10, a servo motor 11, an output end body 12, an inner deep groove ball bearing 13, an outer deep groove ball bearing 14 and a framework sealing ring 15; an input shaft 8 is fixed on a servo motor 11, the servo motor 11 is fixedly arranged on a motor mounting sealing flange 10, big duplex teeth of a duplex gear 5 are meshed with the motor input shaft 8, small duplex teeth of the duplex gear 5 are meshed with a planet wheel 7, the outer wall of the top of the duplex gear 5 is connected with the motor mounting sealing flange 10 through an outer deep groove ball bearing 14, the outer wall of the bottom of the duplex gear 5 is connected with an output disc rack 4 through an inner deep groove ball bearing 13, the planet wheel 7 is sleeved at the tail end of an eccentric shaft 6, the eccentric shaft 6 is connected with the output disc rack 4 through a conical roller bearing on a concentric circle of the eccentric wheel, the outer edge of the output disc rack 4 is connected with a pin gear shell 3 through an angular contact ball bearing 1, the pin gear shell 3 is fixed on the motor mounting sealing flange 10 through bolts, a framework sealing ring 15 is arranged between a wire passing pipe 9 and the motor mounting sealing flange 10, and the top of, the bottom is connected with the output end disk frame, and the output end body 12 is fixedly connected with the output end disk frame 4.

As shown in fig. 1 and 2: the framework sealing ring 15 is divided into an inner ring and an outer ring, the outer ring of the framework sealing ring 15 is fixed on a speed reducer flange, and the inner ring of the framework sealing ring 15 and the outer wall of the wire passing pipe 9 perform friction motion. When the framework sealing ring 15 is connected with the speed reducer flange and the wire passing pipe 9, the outer ring of the framework sealing ring 15 is fixedly connected with the speed reducer flange and sealed in a sealing mode, the inner ring of the framework sealing ring 15 and the wire passing pipe 9 generate relative friction in the rotating process, and the wire passing pipe 9 can be ensured to rotate relative to the speed reducer flange.

As shown in fig. 1 and 2: the duplex gear 5 surrounds the upper layer of the through pipe 9 and does not contact with the through pipe 9, the duplex big teeth and the duplex small teeth of the duplex gear 5 are arranged on the outer wall of the duplex gear 5, the duplex big teeth are arranged above the duplex small teeth, and the duplex small teeth are meshed with the planet wheel 7. The duplicate gear 5 is respectively fixed on a speed reducer flange and the output disc frame 4 and does not contact with the through line pipe 9, the duplicate gear 5 can transmit the rotating speed output by the motor to the planet wheel 7, the motor and the eccentric shaft 6 with the planet wheel 7 are arranged on the same side of the RV speed reducer through the matching of the duplex big teeth and the duplex small teeth, the first-stage speed reduction is realized, and meanwhile, the transmission environment of the hollow speed reducer can be adapted.

As shown in fig. 1 and 2: the side walls of the upper end and the lower end of the duplicate gear 5 are respectively fixedly connected with the inner rings of an inner deep groove ball bearing 13 and an outer deep groove ball bearing 14, the outer ring of the inner deep groove ball bearing 13 is fixedly connected with a motor mounting sealing flange 10, and the outer ring of the outer deep groove ball bearing 14 is fixedly connected with an output disc rack 4. The upper end and the lower end of the duplicate gear 5 are connected by an inner deep groove ball bearing and an outer deep groove ball bearing, so that the duplicate gear 5 only plays a role in transferring the intermediate rotating speed, can be in full contact with grease, and ensures the lasting stability of the first-stage speed reduction.

As shown in fig. 1 and 2: 85-95% of grease is added inside the totally-sealed integrated hollow RV reducer. Enough grease is added into the speed reducer, so that a user does not need to add the grease by himself, the installation procedure is simplified, and the use efficiency is improved.

As shown in fig. 1 and 2: the output end plate rack is of an annular sealing structure, a countersunk hole for fixing a bolt is formed in the surface of the output end plate rack, and the output end body 12 is connected with the output end plate rack 4 through the bolt. The output plate rack 4 is the output at the top of the speed reducer, the sealing structure is adopted to ensure the sealing of the bottom of the speed reducer, the countersunk holes of the arranged fixing bolts can be used for being connected with the output end body 12 through bolts, the connecting mode is simple, and the operation is easy.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims (10)

1. The utility model provides a totally enclosed formula one-piece type cavity formula RV speed reducer which characterized in that: the device comprises an angular contact ball bearing (1), a cycloid wheel (2), a pin gear shell (3), an output disc rack (4), a duplicate gear (5), an eccentric shaft (6), a planet wheel (7), an input shaft (8), a wire passing pipe (9), a motor mounting sealing flange (10), a servo motor (11), an output end body (12), an inner deep groove ball bearing (13), an outer deep groove ball bearing (14) and a framework sealing ring (15); the input shaft (8) is fixed on a servo motor (11), the servo motor (11) is fixedly arranged on a motor mounting sealing flange (10), a big duplex gear of the duplex gear (5) is meshed with the motor input shaft (8), a small duplex gear of the duplex gear (5) is meshed with the planet wheel (7), the outer wall of the top of the duplex gear (5) is connected with the motor mounting sealing flange (10) through an outer deep groove ball bearing (14), the outer wall of the bottom of the duplex gear (5) is connected with the output disc frame (4) through an inner deep groove ball bearing (13), the planet wheel (7) is sleeved at the tail end of the eccentric shaft (6), the eccentric shaft (6) is connected with the output disc frame (4) through a conical roller bearing on an eccentric wheel concentric circle, and the outer edge of the output disc frame (4) is connected with the pin gear shell (3) through an angular contact ball bearing (1), the gear case (3) is fixed on a motor mounting sealing flange (10) through bolts, a framework sealing ring (15) is arranged between a vent pipe (9) and the motor mounting sealing flange (10), the top of the vent pipe (9) is connected with the framework sealing ring (15), the bottom of the vent pipe is connected with an output end disc frame, and an output end body (12) is fixedly connected with an output end disc frame (4).

2. The fully-sealed, integral, hollow RV reducer of claim 1, wherein: the servo motor (11) is installed on the motor installation sealing flange (10) through bolts, a speed reducer flange is arranged on the motor installation sealing flange (10), the speed reducer flange is arranged at the top of the speed reducer, and other parts of the speed reducer flange are sealing structures.

3. The fully-sealed, integral, hollow RV reducer of claim 1, wherein: the input shaft (8) is sleeved on a motor shaft of the servo motor (11), the input shaft (8) is fixed with the motor shaft of the servo motor (11) through a screw, a gear shaft is arranged at the top of the input shaft (8), and the gear shaft is meshed with the duplex large teeth of the duplex gear (5).

4. The fully-sealed, integral, hollow RV reducer of claim 1, wherein: two-layer tubular structure about being had in lead to pipe (9), and the upper pipe wall of lead to pipe (9) is less than the thickness of lower floor's pipe wall, two-layer internal diameter is the same about lead to pipe (9), and the bottom of lead to pipe (9) is connected with the flange, circumference array threaded hole on the flange, circumference array threaded connection hole on the flange.

5. The fully-sealed, integral, hollow RV reducer of claim 1, wherein: the upper end of the through pipe (9) is connected with a speed reducer flange through a framework sealing ring (15), the lower end of the through pipe (9) is connected with an output disc rack (4) through bolts, and a sealing glue or an O-shaped sealing ring is adopted to seal the contact surface of the through pipe.

6. The fully-sealed, integral, hollow RV reducer of claim 1, wherein: the framework sealing ring (15) is divided into an inner ring and an outer ring, the outer ring of the framework sealing ring (15) is fixed on the motor flange, and the inner ring of the framework sealing ring (15) and the outer wall of the vent pipe (9) perform friction motion.

7. The fully-sealed, integral, hollow RV reducer of claim 1, wherein: duplicate gear (5) upper strata around through-line pipe (9), and do not take place the contact with through-line pipe (9), the outer wall of duplicate gear (5) is located to the pair macrotooth and the pair dentition of duplicate gear (5), and the top of pair dentition is located to the pair macrotooth, pair dentition and planet wheel (7) meshing.

8. The fully-sealed, integral, hollow RV reducer of claim 1, wherein: the side walls of the upper end and the lower end of the duplicate gear (5) are respectively fixedly connected with the inner rings of the inner deep groove ball bearing (13) and the outer deep groove ball bearing (14), the outer ring of the inner deep groove ball bearing (13) is fixedly connected with the motor mounting sealing flange (10), and the outer ring of the outer deep groove ball bearing (14) is fixedly connected with the output disc rack (4).

9. The fully-sealed, integral, hollow RV reducer of claim 1, wherein: 85-95% of grease is added inside the totally-sealed integrated hollow RV reducer.

10. The fully-sealed, integral, hollow RV reducer of claim 1, wherein: the output end disc frame is of an annular sealing structure, a countersunk hole for fixing a bolt is formed in the surface of the output end disc frame, and the output end body (12) is connected with the output end disc frame (4) through the bolt.

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