CN212744972U

CN212744972U - Speed reducer input assembly

Info

Publication number: CN212744972U
Application number: CN202020686429.1U
Authority: CN
Inventors: 胡群飞; 张慧明; 唐晓龙; 吴俊峰
Original assignee: Zhejiang University Kunshan Innovation Institute
Current assignee: Zhejiang University Kunshan Innovation Institute
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2021-03-19
Anticipated expiration: 2030-04-29

Abstract

The utility model provides a speed reducer input assembly, it makes power input end and speed reducer input part's equipment precision high, ensures the high accuracy output of speed reducer output, and the cost is reduced. The high-speed input shaft is inserted into an inner ring positioning groove of the central inner hole, the input end of the high-speed input shaft protrudes outwards from the outer end face of the precision bearing, the input end is of an annular structure with a notch, an inner ring cavity of the input end is used for inserting a motor input shaft, the outer ring face of the input end is coated with an elastic clamping clamp, the annular direction of the elastic clamping clamp is provided with a first notch in a penetrating mode in the thickness direction, and the annular inner wall of the elastic clamping clamp corresponds to the radial corresponding position of the first notch and is provided with an inwards-concave notch groove.

Description

Speed reducer input assembly

Technical Field

The utility model relates to a technical field of speed reducer structure specifically is a speed reducer input assembly.

Background

The speed reducer is a relatively precise machine, is an independent transmission part for reducing the rotating speed, transmitting power and increasing torque, and is widely applied to modern machinery. Most of the existing servo speed reducers improve the performance by improving the assembly precision of parts, but the improvement of the assembly precision of the parts has higher and higher requirements on processing equipment, high-end equipment is continuously expensive and part of the high-end equipment is imported for control, so that the control on the cost is greatly restricted; therefore, the defects of the equipment are made up through a new structural design, so that the cost is reduced, and the performance of the speed reducer can be ensured.

Disclosure of Invention

To the above problem, the utility model provides a speed reducer input assembly, it makes power input end and speed reducer input part's equipment precision high, ensures the high accuracy output of speed reducer output, and the cost is reduced.

The utility model provides a speed reducer input assembly which characterized in that: the high-speed precision bearing assembly comprises an input end rear flange, a precision bearing is installed in a central inner hole of the input end rear flange, an outer ring of the precision bearing is arranged to be tightly attached to a bearing positioning ring groove of the central inner hole, a high-speed input shaft is inserted in the inner ring of the precision bearing in a positioning manner, the input end of the high-speed input shaft protrudes out of the outer end face of the precision bearing, the input end is of an annular structure with a notch, an inner ring cavity of the input end is used for inserting a motor input shaft, an outer ring face of the input end is coated with an elastic clamping clamp, the annular direction of the elastic clamping clamp is provided with a first notch in a penetrating mode in the thickness direction, an annular inner wall of the elastic clamping clamp is provided with an inner concave notch groove corresponding to the radial position of the first notch, the thickness direction of the inner concave notch groove is not penetrated, two side walls of the first notch are provided with corresponding connecting, the high-strength screw is arranged in the screw mounting groove, penetrates through the connecting hole of the corresponding side wall and then is in threaded connection with the connecting hole on the other side wall, at least one part of the elastic clamping clamp is arranged to be tightly attached to the outer ring surface of the motor input shaft, the output end of the high-speed input shaft protrudes forwards to the inner end surface of the precision bearing, a transmission positioning center hole is formed in the output end, and the input shaft of the speed reduction part is inserted into the transmission positioning center hole.

It is further characterized in that: an inward concave sealing ring groove is formed in the center of the bearing positioning ring groove in the width direction, an O-shaped sealing ring is embedded in the inward concave sealing ring groove, the O-shaped sealing ring is sleeved on the outer ring surface of the outer ring of the precision bearing, and the matching amount of a rear flange at the input end and the precision bearing is controlled through the elasticity of rubber of the O-shaped sealing ring, so that the convenience in assembly is ensured, the processing difficulty is reduced, and the cost is controlled;

a framework oil seal is arranged on the inner wall of the central inner hole close to the output end, the inner ring of the framework oil seal is sleeved on the corresponding outer ring surface of the high-speed input shaft, and the oil seal of the speed reduction part is reliably sealed;

the axial ring end of the input end rear flange, which is close to the speed reduction part, is provided with a through exhaust hole, the exhaust hole is arranged at the top of the input end rear flange and is communicated with the cavity of the speed reduction part, the high-end speed reducer is lubricated by lubricating oil, the temperature rise of the whole machine is high, the internal air pressure is high, oil leakage is easy to occur, and the exhaust hole can exhaust air when the critical temperature is reached in the test stage, so that the internal and external pressure difference is balanced, the situation of high air pressure cannot occur during the operation again, and the risk of oil leakage is reduced;

a set screw is arranged in the exhaust hole, and sealant is coated on the set screw at the position corresponding to the exhaust hole to ensure the sealing performance;

a safety valve is arranged in the exhaust hole, and the safety valve automatically exhausts air after the pressure is greater than the set pressure, so that the intelligence and reliability of the equipment are ensured;

a powerful magnet is inserted and arranged at the lower part of the input end rear flange close to the inner cavity end face of the speed reduction part, the part of the powerful magnet is exposed out of the inner cavity end face, and the powerful magnet is used for adsorbing iron scraps worn in the operation process, so that the internal wear is greatly reduced;

the powerful magnets are fixedly inserted into the corresponding positioning holes in the end face of the inner cavity, and are arranged close to the outer side in the radial direction;

the speed reduction part specifically includes reduction gear train and output part, reduction gear train and output part's input shaft specifically are the input shaft of gear, reduction gear train and output part's casing pass through axial high strength screw rigid coupling in the anchor ring is connected to the rear end of input end flange, ensures to connect reliable and stable.

Adopt the utility model discloses a behind the structure, motor input shaft cartridge is in the inner ring chamber of the input of high-speed input shaft, the motor input shaft is hugged closely to the partly inner ring wall that the elasticity clamp pressed from both sides, the corresponding outer anchor ring of input is hugged closely to the other part inner ring wall, through the connecting hole of high strength screw rigid coupling both sides, make the elasticity clamp press from both sides the tight fastening of clamp of the input of accomplishing high-speed input shaft and high input shaft, and ensure concentricity between them, it is low to the preparation required precision of two parts, make the cost of manufacture low, and it makes power input and speed reducer input part's equipment precision high, ensure the high accuracy output of speed reducer output, and the cost is reduced.

Drawings

FIG. 1 is a schematic sectional view of the front view of the present invention;

FIG. 2 is a schematic diagram of the right side view of FIG. 1;

the names corresponding to the sequence numbers in the figure are as follows:

the high-strength precision bearing comprises an input end rear flange 1, an inner cavity end face 101, a central inner hole 2, a precision bearing 3, an outer ring 31, an inner ring 32, a bearing positioning ring groove 4, an inner concave sealing ring groove 41, a high-speed input shaft 5, an input end 51, an inner ring cavity 52, an output end 53, a transmission positioning central hole 54 elastic clamping clamp 6, a first notch 61, an inner concave notch groove 62, a screw mounting groove 63, a connecting hole 64, a high-strength screw 7, an O-shaped sealing ring 8, a framework oil seal 9, an exhaust hole 10, a fastening screw 11, a strong magnet 12, a positioning hole 13, a speed reducer wheel train and output part 14, a gear 15 and an axial high.

Detailed Description

A reducer input assembly, see fig. 1 and 2: the input end rear flange comprises an input end rear flange 1, a precision bearing 3 is installed in a central inner hole 2 of the input end rear flange 1, an outer ring 31 of the precision bearing 3 is closely attached to a bearing positioning ring groove 4 of the central inner hole 2 and is arranged, a high-speed input shaft 5 is inserted into an inner ring 32 of the precision bearing 3 and is positioned, an input end 51 of the high-speed input shaft 5 protrudes out of an outer end surface of the precision bearing 3, the input end 51 is of an annular structure with a notch, an inner ring cavity 52 of the input end 51 is used for inserting a motor input shaft, an outer ring surface of the input end 51 is coated with an elastic clamping clamp 6, the annular direction of the elastic clamping clamp 6 is provided with a notch inner groove 62 corresponding to the radial corresponding position of the first notch 61, the thickness direction of the inner notch groove 62 is not through, two side walls of the first notch 61 are provided with corresponding connecting holes 64, a clamp body corresponding to one side wall is provided with a screw mounting groove, the high-strength screw 7 is arranged in the screw mounting groove 63 and penetrates through the connecting hole 64 of the corresponding side wall to be connected with the connecting hole 64 on the other side wall in a threaded mode, at least one part of the elastic clamping clamp 6 is arranged to be tightly attached to the outer ring surface of the motor input shaft, the front of the output end 53 of the high-speed input shaft 5 is protruded to the inner end face of the precision bearing 3, the transmission positioning center hole 54 is formed in the output end 52, and the input shaft of the speed reduction part is inserted into the transmission positioning center hole 54. The elastic clamping clamp 6 is made of high-quality carbon steel through quenching and tempering, and is used after being processed and tested by a balancing machine.

An inward concave sealing ring groove 41 is formed in the center of the bearing positioning ring groove 4 in the width direction, an O-shaped sealing ring 8 is embedded in the inward concave sealing ring groove 41, the O-shaped sealing ring 8 is sleeved on the outer ring surface of the outer ring 31 of the precision bearing 3, the matching amount of the input end rear flange 1 and the precision bearing 3 is controlled through the elasticity of rubber of the O-shaped sealing ring 8, the convenience in assembly is guaranteed, the processing difficulty is reduced, and the cost is controlled;

a framework oil seal 9 is arranged on the inner wall of the central inner hole 2 close to the output end 53, the inner ring of the framework oil seal 9 is sleeved on the corresponding outer ring surface of the high-speed input shaft 5, and the oil seal of the speed reduction part is reliably sealed;

a through exhaust hole 10 is formed in the position, close to the axial ring end of the speed reduction part, of the input end rear flange 1, the exhaust hole 10 is formed in the top of the input end rear flange 1, the exhaust hole 10 is communicated with the cavity of the speed reduction part, the high-end speed reducer is lubricated by lubricating oil, the temperature rise of the whole machine is high, the internal air pressure is high, oil leakage is prone to occurring, the exhaust hole 10 can exhaust air when the critical temperature is reached in the test stage, so that the internal and external pressure difference is balanced, the situation of high air pressure cannot occur when the high-end;

the specific implementation is as follows: a set screw 11 is arranged in the exhaust hole 10, and sealant is coated on the position of the set screw 11 corresponding to the exhaust hole 10 to ensure the sealing performance;

the second concrete implementation: a safety valve (not shown in the figure and belonging to the conventional safe exhaust technology) is arranged in the exhaust hole 10, and the safety valve automatically exhausts air after the pressure is higher than the set pressure, so that the intelligence and reliability of the equipment are ensured;

a powerful magnet 12 is inserted and arranged at the lower part of the inner cavity end face 101, close to the speed reduction part, of the input end rear flange 1, part of the powerful magnet 12 is exposed out of the inner cavity end face 101, and the powerful magnet 12 is used for adsorbing iron filings abraded in the operation process, so that internal abrasion is greatly reduced;

the strong magnet 12 is fixedly inserted into a corresponding positioning hole 13 of the inner cavity end surface 101, and the strong magnet 12 is arranged close to the outer side in the radial direction;

the speed reduction part comprises a speed reducer wheel train and an output part 14, an input shaft of the speed reducer wheel train and the output part 14 is an input shaft of a gear 15, and a shell of the speed reducer wheel train and the output part 14 is fixedly connected to a rear end connecting ring surface of the input end flange 1 through an axial high-strength screw 16, so that stable and reliable connection is ensured.

The working principle is as follows: the motor input shaft is inserted in an inner ring cavity of the input end of the high-speed input shaft, one part of inner ring wall of the elastic clamping clamp is tightly attached to the motor input shaft, the other part of inner ring wall of the elastic clamping clamp is tightly attached to the corresponding outer ring surface of the input end, the two parts of inner ring wall are fixedly connected with the connecting holes on the two sides through the high-strength screws, so that the elastic clamping clamp completes clamping and fastening of the input ends of the high-speed input shaft and ensures concentricity of the two parts of the input shafts, the manufacturing precision requirement on the two parts is low, the manufacturing cost is low, the assembling precision of the power input end and the input part of the speed reducer.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a speed reducer input assembly which characterized in that: the high-speed precision bearing assembly comprises an input end rear flange, a precision bearing is installed in a central inner hole of the input end rear flange, an outer ring of the precision bearing is arranged to be tightly attached to a bearing positioning ring groove of the central inner hole, a high-speed input shaft is inserted in the inner ring of the precision bearing in a positioning manner, the input end of the high-speed input shaft protrudes out of the outer end face of the precision bearing, the input end is of an annular structure with a notch, an inner ring cavity of the input end is used for inserting a motor input shaft, an outer ring face of the input end is coated with an elastic clamping clamp, the annular direction of the elastic clamping clamp is provided with a first notch in a penetrating mode in the thickness direction, an annular inner wall of the elastic clamping clamp is provided with an inner concave notch groove corresponding to the radial position of the first notch, the thickness direction of the inner concave notch groove is not penetrated, two side walls of the first notch are provided with corresponding connecting, the high-strength screw is arranged in the screw mounting groove, penetrates through the connecting hole of the corresponding side wall and then is in threaded connection with the connecting hole on the other side wall, at least one part of the elastic clamping clamp is arranged to be tightly attached to the outer ring surface of the motor input shaft, the output end of the high-speed input shaft protrudes forwards to the inner end surface of the precision bearing, a transmission positioning center hole is formed in the output end, and the input shaft of the speed reduction part is inserted into the transmission positioning center hole.

2. The reducer input assembly of claim 1, wherein: an inward concave sealing ring groove is formed in the center of the bearing positioning ring groove in the width direction, an O-shaped sealing ring is embedded in the inward concave sealing ring groove, and the O-shaped sealing ring is sleeved on the outer ring surface of the outer ring of the precision bearing.

3. The reducer input assembly of claim 1, wherein: and a framework oil seal is arranged on the inner wall of the central inner hole close to the output end, and the inner ring of the framework oil seal is sleeved on the corresponding outer ring surface of the high-speed input shaft.

4. The reducer input assembly of claim 1, wherein: the axial ring end position of the input end rear flange, which is close to the speed reduction part, is provided with a through exhaust hole, the exhaust hole is arranged at the top position of the input end rear flange, and the exhaust hole is communicated with the cavity of the speed reduction part.

5. The reducer input assembly of claim 4, wherein: and a set screw is arranged in the exhaust hole, and the position of the set screw corresponding to the exhaust hole is coated with a sealing glue.

6. The reducer input assembly of claim 4, wherein: and a safety valve is arranged in the exhaust hole, and the safety valve automatically exhausts air after the pressure is greater than the set pressure.

7. The reducer input assembly of claim 1, wherein: the lower part position that is close to of flange behind the input speed reduction part's inner chamber terminal surface is provided with a powerful magnet of cartridge, the part of powerful magnet expose in the inner chamber terminal surface, powerful magnet is used for adsorbing the iron fillings that the operation in-process worn out.

8. The reducer input assembly of claim 7, wherein: the powerful magnets are fixedly inserted into the corresponding positioning holes in the end face of the inner cavity, and the powerful magnets are arranged close to the outer side in the radial direction.

9. The reducer input assembly of claim 1, wherein: the speed reduction part specifically comprises a speed reducer wheel train and an output part, the input shaft of the speed reducer wheel train and the input shaft of the output part are specifically the input shafts of gears, and the shells of the speed reducer wheel train and the output part are fixedly connected with the rear end connecting ring surface of the input end flange through axial high-strength screws.