CN216774519U

CN216774519U - Gear transmission anti-eccentricity assembly

Info

Publication number: CN216774519U
Application number: CN202123234541.5U
Authority: CN
Inventors: 龙海生
Original assignee: Hebei Yiwalker Robot Technology Co ltd
Current assignee: Hebei Yiwalker Robot Technology Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-06-17
Anticipated expiration: 2031-12-21

Abstract

The utility model provides a gear transmission anti-eccentricity assembly, which comprises: drive arrangement, gear, encapsulation seat and two sets of bearings. The driving device comprises a driving main body and an output shaft; the gear comprises a transmission part and a meshing part, wherein the transmission part and the meshing part are sleeved on the output shaft; the packaging seat is positioned in the mounting space between the meshing part and the driving main body, is connected with the driving main body and is provided with an accommodating cavity; the transmission part and the two groups of bearings are both positioned in the accommodating cavity, and the two groups of bearings are sleeved on the transmission part. The utility model relates to a gear transmission anti-eccentricity assembly, wherein a gear comprises a transmission part, two bearings are arranged between the transmission part and an encapsulation seat, the bearings and the transmission part generate interaction force, the bearings can bear radial force, and the two bearings provide two supporting points, so that the transmission part can only rotate relative to the encapsulation seat along the axial direction of the transmission part, but can not shake or move along the radial direction of the transmission part, and the problems of gear eccentricity and output shaft bending deformation caused by the radial force generated in gear meshing transmission are effectively solved.

Description

Gear transmission anti-eccentricity assembly

Technical Field

The utility model belongs to the technical field of mechanical transmission, and particularly relates to a gear transmission anti-eccentricity assembly.

Background

The gear transmission is a device for transmitting motion and power by a gear pair, and the gear transmission is widely applied to various mechanical equipment due to the advantages of high transmission efficiency, compact structure, reliable work, long service life and the like. The gear transmission is the most important and widely applied transmission in mechanical transmission.

During gear meshing transmission, relative acting force, such as radial force, is generated, and the radial force refers to the force pointing from a meshing point to a rotation center, namely the force along the radial direction of the gear. The radial force causes eccentricity of the gears, and when the radial force is too large, it may even cause bending deformation of the output shaft that drives the rotation of the gears. In mechanical transmission, a gear is generally powered by a motor, a speed reduction motor, a speed reducer, a motor combination and other driving devices, and the bending deformation of an output shaft of the driving device is maintained, so that time and labor are wasted, and large economic loss is caused.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a gear transmission anti-eccentricity assembly, aiming at solving the problems of gear eccentricity and output shaft bending deformation caused by radial force in the gear transmission process.

In order to achieve the purpose, the utility model adopts the technical scheme that: provided is a gear transmission anti-eccentricity assembly, characterized by comprising: the driving device comprises a driving main body and an output shaft which is connected with the driving main body and extends out of the driving main body;

the gear comprises a transmission part sleeved on the output shaft and a meshing part connected with the transmission part; an installation space is arranged between the meshing part and the driving main body;

the packaging seat is positioned in the mounting space and is connected with the driving main body; the packaging seat is provided with an accommodating cavity, and the transmission part is positioned in the accommodating cavity; and

and the two groups of bearings are arranged in the accommodating cavity in a mirror image mode along the axial direction of the output shaft and are sleeved on the transmission part.

In one possible implementation, the bearing is a tapered roller bearing.

In a possible implementation manner, a ring platform protruding inwards in the radial direction is arranged on the inner peripheral cavity wall of the accommodating cavity, the two groups of bearings are axially arranged by taking the ring platform as a reference, and the end face of the outer ring of each bearing is abutted against the end face of the ring platform.

In a possible embodiment, a retaining ring is connected to the end of the transmission part facing the drive body, wherein the inner ring of one set of bearings abuts against the retaining ring and the inner ring of the other set of bearings abuts against the end face of the engagement part facing the drive body.

In one possible implementation, the retainer ring has a step surface, and the step surface abuts against an inner peripheral surface of the bearing inner race and an end surface of the bearing inner race, respectively.

In a possible implementation manner, the retainer ring is connected with the transmission part through a plurality of fastening pieces arranged along the axial direction of the transmission part, and the fastening pieces are arranged at equal intervals along the circumferential direction of the transmission part.

In one possible implementation, the output shaft is keyed with the transmission part.

In a possible implementation manner, the accommodating cavity is communicated along the axial direction of the output shaft; the packaging seat comprises a fixed plate and a fixed sleeve connected with the fixed plate, the fixed plate is fixedly connected with the driving main body, and the two bearings are located in the fixed sleeve.

In one possible embodiment, a gap is present between the end face of the fixing sleeve and the end face of the engagement portion.

In a possible embodiment, the transmission part is formed integrally with the engagement part, and the protruding end face of the output shaft is flush with the end face of the engagement part facing the drive body, or is located between the drive body and the engagement part.

The gear transmission anti-eccentricity assembly provided by the utility model has the beneficial effects that: compared with the prior art, the gear establishes the transmission portion on the output shaft including the cover, be connected with the encapsulation seat in the drive main part, be provided with two bearings between transmission portion and encapsulation seat, produce the interact power between bearing and the transmission portion, the bearing can bear radial force, and two bearings provide two strong points, it is stable to support, make the transmission portion of gear can only encapsulate the seat relatively and do along the axial rotation of transmission portion, and can not take place along the radial rocking or removal of transmission portion, the eccentricity of gear has effectively been prevented, the risk that the output shaft takes place bending deformation has been reduced.

Drawings

FIG. 1 is a schematic structural diagram of a gear transmission anti-eccentricity assembly according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the front view of FIG. 1;

FIG. 3 is an enlarged view at A in FIG. 2;

FIG. 4 is a cross-sectional view of the bottom view of FIG. 1;

FIG. 5 is an enlarged view at B in FIG. 4;

FIG. 6 is an exploded view of FIG. 1;

fig. 7 is a schematic structural diagram of a retainer ring according to an embodiment of the present invention.

Description of reference numerals:

10. a drive device; 11. a drive body; 12. an output shaft; 20. a gear; 21. a transmission section; 22. an engaging portion; 30. a package base; 31. an accommodating cavity; 311. a ring platform; 32. a fixing plate; 33. fixing a sleeve; 40. a bearing; 50. a retainer ring; 51. a step surface; 60. a key; 70. a fastener.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1 to 6 together, a gear transmission anti-eccentric assembly according to the present invention will now be described. A gear drive anti-eccentricity assembly comprising: a driving device 10, a gear 20, a package base 30 and two sets of bearings 40. The driving device 10 includes a driving body 11 and an output shaft 12 connected to the driving body 11 and extending out of the driving body 11; the gear 20 comprises a transmission part 21 sleeved on the output shaft 12 and an engagement part 22 connected with the transmission part 21; the engaging portion 22 has an installation space with the driving body 11; the package base 30 is located in the installation space and connected to the driving body 11; the package base 30 has a containing cavity 31, and the transmission part 21 is located in the containing cavity 31; and two sets of bearings 40, which are arranged in the accommodating cavity 31 in a mirror image manner along the axial direction of the output shaft 12 and are sleeved on the transmission part 21.

Compared with the prior art, the gear transmission anti-eccentricity assembly provided by the embodiment comprises a transmission part 21 sleeved on an output shaft 12, a packaging seat 30 is connected on a driving main body 11, two bearings 40 are arranged between the transmission part 21 and the packaging seat 30, when the gear 20 is in meshing transmission, an interaction force is generated between the bearings 40 and the transmission part 21, the bearings 40 can bear a radial force, and the two bearings 40 provide two supporting points, so that the connection between the transmission part 21 and the packaging seat 30 is more stable, the gear 20 can only rotate relative to the packaging seat 30 along the axial direction of the transmission part 21 and cannot shake or move along the radial direction of the transmission part 21, the eccentricity of the gear 20 is effectively prevented, the two gears 20 are sleeved on the transmission part 21 instead of being sleeved on the output shaft 12, and an interaction force is generated between the gear 20 and the transmission part 21, instead of applying force directly to the output shaft 12, the output shaft 12 is protected and the risk of bending deformation of the output shaft 12 is reduced.

In some embodiments, the bearing 40 may be configured as shown in fig. 2-6, and with reference to fig. 2-6, the bearing 40 is a tapered roller bearing.

The two tapered roller bearings 40 arranged in a mirror image manner can bear radial force and axial force, so that the device is stable in operation and reasonable in stress. The axial force may be an axial force generated by engagement of the gear 20 on the one hand and an axial force generated by decomposition when the tapered roller bearing 40 is subjected to a radial force on the other hand.

In some embodiments, the above-mentioned characteristic receiving cavity 31 may adopt a structure as shown in fig. 2 to 6, referring to fig. 2 to 6, an inner circumferential cavity wall of the receiving cavity 31 is provided with a boss 311 protruding inward in a radial direction, two sets of bearings 40 are axially arranged with the boss 311 as a reference, and an outer ring end surface of the bearing 40 abuts against an end surface of the boss 311.

The setting of loop platform 311 separates two bearings 40 and sets up in the both ends of transmission portion 21, and during the prevention device operation process, two bearings 40 collided, mutual interference, or two bearings 40 off tracking to the one end of transmission portion 21, lead to the other end of transmission portion 21 to lack the support, and then lead to when gear 20 received radial force, transmission portion 21 easily takes place to rock.

In some embodiments, the above-mentioned characteristic transmission part 21 may adopt a structure as shown in fig. 2 to 6, and referring to fig. 2 to 6, a retaining ring 50 is connected to the end of the transmission part 21 facing the driving body 11, wherein the inner ring of one set of bearings 40 abuts against the retaining ring 50, and the inner ring of the other set of bearings 40 abuts against the end surface of the meshing part 22 facing the driving body 11.

The retainer ring 50, the land 311 and the engagement portion 22 cooperate to axially secure the two bearings 40, providing axial location for the bearings 40.

In some embodiments, the retaining ring 50 with the above-mentioned features can adopt a structure as shown in fig. 2 to 7, and referring to fig. 2 to 7, the retaining ring 50 has a step surface 51, the step surface 51 is right-angled, and the step surface 51 is abutted with the inner circumferential surface of the inner ring of the bearing 40 and the end surface of the inner ring of the bearing 40 respectively.

The retainer ring 50 is arranged in a step shape and extends into the bearing 40, so that the strength of the retainer ring 50 is increased under the condition that the axial length of the accommodating cavity 31 is not increased.

In some embodiments, the retaining ring 50 and the transmission portion 21 are connected in a manner as shown in fig. 2 to 6, and referring to fig. 2 to 6, the retaining ring 50 and the transmission portion 21 are connected by a plurality of fastening members 70 arranged along the axial direction of the transmission portion 21, the plurality of fastening members 70 are arranged at equal intervals along the circumferential direction of the transmission portion 21, and specifically, the fastening members 70 may be screws.

The retainer ring 50 is detachably connected with the transmission part 21, so that the disassembly, maintenance and replacement of each part are convenient.

In some embodiments, the connection manner of the output shaft 12 and the transmission part 21 can adopt the structure shown in fig. 2 to 6, and referring to fig. 2 to 6, the output shaft 12 and the transmission part 21 are connected by a key 60.

The circumferential positioning of the output shaft 12 and the transmission part 21 is realized through the key 60 so as to transmit motion and torque, and the structure is simple and the operation is stable.

In some embodiments, the structure of the feature packaging seat 30 may adopt the structure shown in fig. 2 to 6, and referring to fig. 2 to 6, the accommodating cavity 31 penetrates along the axial direction of the output shaft 12; the package base 30 includes a fixing plate 32 and a fixing sleeve 33 connected to the fixing plate 32, the fixing plate 32 is fixedly connected to the driving body 11, specifically, a bolt fastener is used to realize the fixed connection, and the two bearings 40 are located in the fixing sleeve 33.

The accommodating cavity 31 penetrates through the output shaft 12 in the axial direction, and provides a space for mounting the bearing 40; the fixing plate 32 is fixedly connected with the driving body 11, so that the packaging seat 30 is fixed, and the fixing plate 32 is connected with the driving body 11 through a bolt fastener, so that the parts are convenient to detach, maintain and replace.

In some embodiments, the above-mentioned positional relationship between the fixing sleeve 33 and the gear 20 may adopt a structure as shown in fig. 2 to 6, and referring to fig. 2 to 6, a gap exists between an end surface of the fixing sleeve 33 and an end surface of the engaging portion 22.

A gap exists between the end face of the fixed sleeve 33 and the end face of the meshing part 22, so that the friction between the end face of the fixed sleeve 33 and the end face of the meshing part 22 is prevented in the rotation process of the gear 20, and the damage to the gear 20 and the fixed sleeve 33 caused by the friction is avoided.

In some embodiments, the structure of the above-mentioned characteristic gear 20 may adopt a structure as shown in fig. 2 to 6, and referring to fig. 2 to 6, the transmission portion 21 is integrally formed with the meshing portion 22, and the protruding end surface of the output shaft 12 is flush with the end surface of the meshing portion 22 facing the driving body 11, or is located between the driving body 11 and the meshing portion 22.

The output shaft 12 does not protrude to the engagement portion 22, leaving a certain deformation space for the engagement portion 22, and when the radial force is excessive, deformation will occur first at the engagement portion 22, thereby protecting the output shaft 12.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A gear drive anti-eccentricity assembly, comprising:

the driving device comprises a driving main body and an output shaft which is connected with the driving main body and extends out of the driving main body;

2. A gear drive anti-eccentricity assembly according to claim 1, wherein the bearings are tapered roller bearings.

3. The gear transmission anti-eccentric assembly according to claim 1, wherein a radially inwardly protruding annular table is provided on an inner peripheral cavity wall of the accommodating cavity, two sets of the bearings are axially arranged with the annular table as a reference, and an outer ring end face of each bearing abuts against an end face of the annular table.

4. A gear transmission anti-misalignment assembly as set forth in claim 3, wherein the end of the transmission portion facing the drive body is connected with a retainer ring, wherein the inner race of one set of the bearings abuts against the retainer ring, and the inner race of the other set of the bearings abuts against the end face of the meshing portion facing the drive body.

5. The gear transmission anti-eccentricity assembly according to claim 4, wherein the retainer ring has step surfaces that abut against the inner peripheral surface of the inner race and the end surface of the inner race, respectively.

6. The gear transmission anti-eccentric assembly according to claim 5, wherein the retainer ring is connected with the transmission part by a plurality of fastening members arranged along the axial direction of the transmission part, and the plurality of fastening members are arranged at equal intervals along the circumferential direction of the transmission part.

7. A gear drive anti-eccentricity assembly according to claim 1, wherein the output shaft is keyed to the drive section.

8. The gear transmission anti-eccentric assembly according to claim 1, wherein the accommodating cavity is through along the axial direction of the output shaft; the packaging seat comprises a fixed plate and a fixed sleeve connected with the fixed plate, the fixed plate is fixedly connected with the driving main body, and the two bearings are located in the fixed sleeve.

9. A gear transmission anti-eccentricity assembly as set forth in claim 8, wherein a gap exists between the end face of the fixing sleeve and the end face of the engaging portion.

10. A gear transmission anti-eccentric assembly according to claim 1, characterized in that the transmission part is formed integrally with the engagement part, and the protruding end surface of the output shaft is flush with the end surface of the engagement part facing the drive body, or is located between the drive body and the engagement part.