Mute large-speed-ratio high-torque small worm transmission gear motor

Abstract

The utility model discloses a mute large-speed-ratio high-torque small worm transmission gear motor, which relates to the technical field of gear motors and comprises a motor and a shell fixedly connected with the motor, and the output end of the motor penetrates into the shell and is connected with a worm. A first-stage rotating shaft located on one side of the worm is rotatably arranged in the shell, inclined sheet teeth meshed with the worm are arranged on the first-stage rotating shaft, first-stage shaft teeth located at the lower ends of the inclined sheet teeth are further arranged on the first-stage rotating shaft, and the first-stage rotating shaft is further sleeved with a copper sleeve; a duplicate gear set and a rotatably arranged output shaft are arranged in the shell, the primary shaft gear is in meshing transmission connection with the duplicate gear set, output teeth are arranged on the output shaft, the output teeth are in meshing transmission connection with the duplicate gear set, and the output shaft penetrates out of the shell to be in butt joint with paired equipment. Vibration and noise during power transmission are reduced through cooperation of the oblique piece teeth and the worm, loads and stress are distributed through the duplicate gear set, and the bending fatigue strength and the contact fatigue strength are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a reduction motor technical field especially relates to a mute big speed ratio high torque small -size worm drive reduction motor. BACKGROUND

[0002] As an important mechanical transmission device, reduction motor has a wide range of applications and unique advantages. Industrial machines, medical devices, aerospace, logistics transportation and other occasions, can use reduction motor to realize accurate motion control and position adjustment, to ensure the normal operation and reliability of the equipment. Reduction motor is usually composed of two parts of motor (or called motor) and reducer. The motor is responsible for providing the original power, and the reducer converts the high-speed rotation of the motor into low-speed high-torque output through a series of gears or other reduction mechanisms. This design makes the reduction motor particularly useful in applications that require greater traction but do not require high speed, to meet different work requirements.

[0003] The existing worm type transmission on the market generally has low transmission efficiency, high heat, low transmission precision, and high noise, etc. Therefore, with the development of science and technology and the changing needs, the future development trend of worm drive is to improve transmission efficiency, transmission precision and reduce noise and heat, which is the main measure to meet the market demand for high-performance worm drive.

[0004] Therefore, it is necessary to propose a new technical solution to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a technical solution that can solve the above problems.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a mute big speed ratio high torque small -size worm drive reduction motor, comprising a motor, a housing fixedly connected with the motor, and a worm connected to the output end of the motor and penetrating into the housing;

[0007] A primary shaft is rotatably arranged in the housing on one side of the worm, and a bevel gear is arranged on the primary shaft and engaged with the worm, a primary shaft gear is arranged on the primary shaft below the bevel gear, and a copper sleeve is further arranged on the primary shaft.

[0008] A double gear set and an output shaft are arranged in the housing, the primary shaft gear is in meshing transmission connection with the double gear set, an output gear is arranged on the output shaft, the output gear is in meshing transmission connection with the double gear set, and the output shaft protrudes from the housing and is connected with a matched device.

[0009] As a further scheme of the utility model: the duplex gear set includes two-stage rotating shaft and three-stage rotating shaft which are rotatably arranged in the shell, the two-stage rotating shaft is provided with two-stage piece tooth and two-stage shaft tooth, the three-stage rotating shaft is provided with three-stage piece tooth and three-stage shaft tooth;

[0010] Among them, the two-stage piece tooth is engaged with the primary shaft tooth, the two-stage shaft tooth is engaged with the three-stage piece tooth, and the three-stage shaft tooth is engaged with the output tooth.

[0011] As a further scheme of the utility model: the position of the inclined piece tooth, the three-stage shaft tooth and the output tooth in the vertical direction is between the two-stage piece tooth and the three-stage piece tooth.

[0012] As a further scheme of the utility model: the top wall and the bottom wall in the shell are provided with three ball bearings, and the two ends of the primary rotating shaft, the two-stage rotating shaft and the three-stage rotating shaft are connected with the corresponding ball bearings.

[0013] As a further scheme of the utility model: the top end and the bottom end of the shell are provided with openings corresponding to the output shaft, the upper flange bearing and the lower flange bearing are installed on the two openings, the lower end of the output shaft is connected with the lower flange bearing of the bottom end, and the upper end of the output shaft penetrates the shaft hole of the upper flange bearing and protrudes outside the shell.

[0014] As a further scheme of the utility model: a plurality of fixing sleeves are arranged on the same side of the shell and the protruding direction of the output shaft, and a positioning pin is arranged on the fixing sleeve.

[0015] As a further scheme of the utility model: the shell includes a lower shell and an upper shell, coaxial bolt holes are arranged at the corners of the lower shell and the upper shell, and fixing bolts are arranged on the upper shell and screwed with the bolt holes.

[0016] Compared with the prior art, the utility model has the advantages that when the motor operates, the output end drives the worm to rotate in the shell, drives the inclined piece tooth engaged with the worm, drives the primary rotating shaft and the primary shaft tooth to rotate, and then drives the two-stage piece tooth and the three-stage piece tooth to rotate through the engagement of the primary shaft tooth and the two-stage piece tooth, the engagement of the two-stage shaft tooth and the three-stage piece tooth, and the engagement of the three-stage shaft tooth and the output tooth, so that the torque is transmitted to the output shaft, the speed is reduced and the torque is increased, and the output shaft provides large torque power for the intelligent components such as robots.

[0017] The cooperation of the oblique tooth and the worm can make more contact surfaces when rotating, and the power is transmitted through a continuous contact line between the two, instead of the traditional point contact or surface contact, so that the operation is smoother, which makes the load distribution more uniform, reduces the local stress concentration, and thus reduces the vibration and noise in the power transmission process; and the copper sleeve can limit the axial movement of the primary rotating shaft, ensure that the primary shaft tooth can accurately engage with the secondary tooth, ensure the smoothness and stability of power transmission, and the copper material has a low friction coefficient and high heat dissipation performance, which can not only reduce the friction coefficient, but also reduce the temperature rise.

[0018] Meanwhile, the design of the secondary rotating shaft, the secondary tooth, the secondary shaft tooth, the tertiary rotating shaft, the tertiary tooth and the tertiary shaft tooth in the double gear set can distribute the load in the transmission process, avoid that a single tooth bears excessive pressure, and also can disperse stress, improve the bending fatigue strength and contact fatigue strength of the gear, and the engagement between the secondary tooth, the secondary shaft tooth, the tertiary tooth and the tertiary shaft tooth is accurate, the stability in the power transmission process is high, the energy loss can be reduced, and the efficiency of the entire transmission system can be improved.

[0019] The additional aspects and advantages of the present application will be given in part in the following description, and will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0021] Figure 1 is a structural schematic diagram of the shell of the present application;

[0022] Figure 2 is a structural schematic diagram of the shell of the present application;

[0023] Figure 3 is a structural schematic diagram of the shell of the present application;

[0024] Figure 4 is a structural schematic diagram of the shell of the present application;

[0025] The corresponding label explanations in the drawings are as follows:

[0026] 1, motor; 2, housing; 21, lower shell; 22, upper shell; 23, bolt hole; 24, fixing bolt; 3, worm; 4, primary rotating shaft; 5, inclined tooth; 6, primary shaft tooth; 7, copper sleeve; 8, double gear set; 81, secondary rotating shaft; 82, tertiary rotating shaft; 83, secondary tooth; 84, secondary shaft tooth; 85, tertiary tooth; 86, tertiary shaft tooth; 9, output shaft; 10, output tooth; 11, ball bearing; 12, upper flange bearing; 13, lower flange bearing; 14, fixing sleeve; 15, positioning pin. DETAILED DESCRIPTION

[0027] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] Please refer to Figures 1-4 A mute, small-sized worm drive speed reducer motor with high torque and large speed ratio, comprising a motor 1, a housing 2 fixedly connected with the motor 1, and a worm 3 connected to the output end of the motor 1 and penetrating into the housing 2.

[0029] A primary rotating shaft 4 is rotatably arranged in the housing 2 on one side of the worm 3, the primary rotating shaft 4 is provided with inclined teeth 5 engaged with the worm 3, the primary rotating shaft 4 is further provided with primary shaft teeth 6 located at the lower end of the inclined teeth 5, and the primary rotating shaft 4 is further provided with a copper sleeve 7.

[0030] The housing 2 is provided with a double gear set 8 and an output shaft 9 rotatably arranged therein, the primary shaft teeth 6 are in meshing transmission connection with the double gear set 8, the output shaft 9 is provided with output teeth 10 in meshing transmission connection with the double gear set 8, the output shaft 9 protrudes from the housing 2 and is connected with a matched device, the housing 2 is internally rotatably provided with a secondary rotating shaft 81 and a tertiary rotating shaft 82, the secondary rotating shaft 81 is provided with secondary teeth 83 and secondary shaft teeth 84, and the tertiary rotating shaft 82 is provided with tertiary teeth 85 and tertiary shaft teeth 86.

[0031] Among them, the secondary teeth 83 are in meshing connection with the primary shaft teeth 6, the secondary shaft teeth 84 are in meshing connection with the tertiary teeth 85, and the tertiary shaft teeth 86 are in meshing connection with the output teeth 10.

[0032] Specifically, in the present embodiment, when the motor 1 is running, the output end drives the worm 3 to rotate inside the housing 2, drives the inclined plate tooth 5 engaged therewith, and drives the primary rotating shaft 4 and the primary shaft tooth 6 to rotate, the primary shaft tooth 6 drives the secondary plate tooth 83 through engagement, and drives the secondary rotating shaft 81 and the secondary shaft tooth 84 to rotate, the secondary shaft tooth 84 drives the tertiary plate tooth 85 through engagement, and drives the tertiary rotating shaft 82 and the tertiary shaft tooth 86 to rotate, the tertiary shaft tooth 86 drives the output tooth 10, so as to realize speed reduction and torque increase, and transmit the torque to the output shaft 9, and provide large torque power for intelligent components such as robots through the output shaft 9.

[0033] The cooperation of the inclined plate tooth 5 and the worm 3 can generate more contact surfaces during rotation, and the power is transmitted through a continuous contact line between the two, instead of traditional point contact or surface contact, so that the operation is smoother, the load distribution is more uniform, the local stress concentration is reduced, and the vibration and noise in the power transmission process are reduced. The copper bush 7 can limit the axial movement of the primary rotating shaft 4, ensure the accurate engagement of the primary shaft tooth 6 and the secondary plate tooth 83, and ensure the smoothness and stability of power transmission. The copper material has a low friction coefficient and high heat dissipation performance, which can reduce the friction coefficient and temperature rise. The motor 1 is preferably a brushless motor, which has the characteristics of high efficiency, low noise and long service life, so as to further reduce the noise during operation.

[0034] The design of the secondary rotating shaft 81, the secondary plate tooth 83, the secondary shaft tooth 84, the tertiary rotating shaft 82, the tertiary plate tooth 85 and the tertiary shaft tooth 86 in the double gear set 8 can distribute the load during transmission, avoid that a single tooth bears excessive pressure, disperse stress, improve the bending fatigue strength and contact fatigue strength of the gear, and ensure the accurate engagement between the secondary plate tooth 83, the secondary shaft tooth 84, the tertiary plate tooth 85 and the tertiary shaft tooth 86, so as to reduce energy loss and improve the efficiency of the entire transmission system.

[0035] Preferably, the inclined plate tooth 5, the primary shaft tooth, the secondary plate tooth 83, the secondary shaft tooth 84, the tertiary plate tooth 85 and the tertiary shaft tooth 86 are subjected to heat treatment process to improve the hardness, so as to ensure the strength and wear resistance of the gears.

[0036] In the present embodiment, the positions of the inclined plate tooth 5, the tertiary shaft tooth 86 and the output tooth 10 in the vertical direction are between the secondary plate tooth 83 and the tertiary plate tooth 85, which can greatly reduce the overall volume while realizing a large speed reduction ratio and maintaining a high output torque.

[0037] In the present embodiment, reference is made to Figure 3 and Figure 4Further, the top wall and the bottom wall inside the shell 2 are provided with three ball bearings 11, and the two ends of the first rotating shaft 4, the second rotating shaft 81 and the third rotating shaft 82 are connected with the corresponding ball bearings 11; the design of the up-and-down ball bearings 11 can effectively support the first rotating shaft 4, the second rotating shaft 81 and the third rotating shaft 82, so that the first rotating shaft 4, the second rotating shaft 81 and the third rotating shaft 82 can be kept stable at high speed, and can also bear the axial and radial load, reduce the energy loss caused by friction, and improve the efficiency and service life of the whole system.

[0038] In the embodiment, reference is made to Figure 3 and Figure 4 Further, the top end and the bottom end of the shell 2 are provided with openings corresponding to the output shaft 9, the two openings are provided with upper flange bearings 12 and lower flange bearings 13, the lower end of the output shaft 9 is connected with the lower flange bearing 13 at the bottom end, and the upper end of the output shaft 9 penetrates the shaft hole of the upper flange bearing 12 and protrudes outside the shell 2; the upper flange bearing 12 and the lower flange bearing 13 form a bidirectional design for the output shaft 9, which not only keeps the output shaft 9 stable at high speed, but also has a convex structure, which facilitates quick alignment during installation.

[0039] In the embodiment, reference is made to Figure 1 Further, the shell 2 and the protruding direction of the output shaft 9 are provided with a plurality of fixed sleeves 14 on the same side, the fixed sleeves 14 are provided with positioning pins 15, and the number of the fixed sleeves 14 and the positioning pins 15 is four.

[0040] The four positioning pins 15 are installed outside the shell 2 through the four fixed sleeves 14, and the four positioning pins 15 can realize accurate alignment with other matched products, so as to ensure the stability and reliability of the whole system.

[0041] In the embodiment, reference is made to Figure 1 and Figure 2 Further, the shell 2 comprises a lower shell 21 and an upper shell 22, coaxial bolt holes 23 are provided at the corners of the lower shell 21 and the upper shell 22, and the upper shell 22 is provided with fixed bolts 24 screwed with the bolt holes 23.

[0042] The fixed bolts 24 are screwed with the bolt holes 23 provided on the lower shell 21 and the upper shell 22, so as to fix the lower shell 21 and the upper shell 22 together, and the upper shell 22 and the lower shell 21 can be separated by unscrewing the fixed bolts 24 from the bolt holes 23, which is convenient for disassembly and assembly, and further facilitates the maintenance and daily maintenance of the internal components.

[0043] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and not limiting, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A small worm drive reduction motor with high torque for silent large speed ratio, characterized in that, Including motor (1), with motor (1) fixed shell (2), the output end of motor (1) is connected with worm (3) in shell (2); Rotatablely arranged with primary shaft (4) on one side of worm (3) in shell (2), the primary shaft (4) is provided with inclined tooth (5) engaged with worm (3), the primary shaft (4) is further provided with primary shaft tooth (6) at the lower end of inclined tooth (5), and the primary shaft (4) is further provided with copper sleeve (7). Double gear set (8) and rotatable output shaft (9) are arranged in shell (2), primary shaft tooth (6) is engaged with double gear set (8) for transmission connection, output shaft (9) is provided with output tooth (10), output tooth (10) is engaged with double gear set (8) for transmission connection, output shaft (9) is exposed to shell (2) and is connected with matching equipment.

2. The silent large speed ratio high torque small size worm drive reduction motor according to claim 1, characterized by, Double gear set (8) includes rotatable second shaft (81) and third shaft (82) arranged in shell (2), second shaft (81) is provided with second tooth (83) and second shaft tooth (84), third shaft (82) is provided with third tooth (85) and third shaft tooth (86). Wherein, the second tooth (83) is engaged with the first shaft tooth (6), the second shaft tooth (84) is engaged with the third tooth (85), and the third shaft tooth (86) is engaged with the output tooth (10).

3. The silent large speed ratio high torque small size worm drive reduction motor according to claim 2, characterized in that, The positions of inclined tooth (5), third shaft tooth (86) and output tooth (10) in the vertical direction are between second tooth (83) and third tooth (85).

4. The silent large speed ratio high torque small size worm drive reduction motor according to claim 2, characterized by, The top wall and the bottom wall of the shell (2) are provided with three ball bearings (11), and the two ends of the primary shaft (4), the second shaft (81) and the third shaft (82) are connected with the corresponding ball bearings (11).

5. The silent large speed ratio high torque small size worm drive reduction motor according to claim 2, characterized by, The top end and the bottom end of the shell (2) are provided with openings corresponding to the output shaft (9), the two openings are provided with upper flange bearing (12) and lower flange bearing (13), the lower end of the output shaft (9) is connected with the lower flange bearing (13) of the bottom end, and the upper end of the output shaft (9) is connected with the shaft hole of the upper flange bearing (12) and exposed outside the shell (2).

6. The silent large speed ratio high torque small size worm drive reduction motor according to claim 1, characterized by, The shell (2) and the output shaft (9) are provided with a plurality of fixed sleeves (14) on the same side of the exposed direction, and the fixed sleeves (14) are provided with positioning pins (15).

7. The silent large speed ratio high torque small size worm drive reduction motor according to claim 1, characterized by, The shell (2) includes lower shell (21) and upper shell (22), coaxial bolt holes (23) are arranged at the corners of the lower shell (21) and the upper shell (22), and fixed bolts (24) are arranged on the upper shell (22) and screwed with the bolt holes (23).

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