CN215300351U

CN215300351U - Structure for adding elastic steel bushing to rolling bearing motor

Info

Publication number: CN215300351U
Application number: CN202121673732.9U
Authority: CN
Inventors: 罗永庆; 夏青岭
Original assignee: Shenzhen Zhaoli Motor Co ltd
Current assignee: Shenzhen Zhaoli Motor Co ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2021-12-24
Anticipated expiration: 2031-07-21

Abstract

The utility model relates to a antifriction bearing motor increases structure of elastic steel bushing, including fore-stock subassembly and back support subassembly, the fore-stock subassembly and all include the mounting groove on the back support subassembly, two the mounting groove is preceding mounting groove and back mounting groove respectively, antifriction bearing installs the mounting groove, antifriction bearing with be equipped with the elastic steel bushing between the mounting groove, the elastic steel bushing outer wall with mounting groove inner wall butt, the elastic steel bushing inner wall with antifriction bearing outer wall butt. This application has that elastic steel bushing can warp through the elasticity pre-compaction, is difficult to appear the installation groove inner wall and the big condition of coaxial precision deviation appears in the antifriction bearing outer lane when the assembly to when making the motor shaft installation, the line position precision of motor shaft, antifriction bearing and installation groove axiality is more accurate, thereby the antifriction bearing in making the motor is difficult for appearing the effect of rotating the inflexible or the dead condition of card.

Description

Structure for adding elastic steel bushing to rolling bearing motor

Technical Field

The application relates to the technical field of motors, in particular to a structure for increasing an elastic steel sleeve of a rolling bearing motor.

Background

Among traditional two rolling bearing motor structure, antifriction bearing inner circle and motor shaft tight fit, the assembly methods of antifriction bearing outer lane and support inner wall is the rigid hard contact, such assembly methods processing degree of difficulty is big, the quality assurance difficulty, when the support inner wall appears coaxial precision deviation with the antifriction bearing outer lane when the motor assembly when big, when making the motor shaft installation easily, the motor shaft is big with antifriction bearing inner circle axiality deviation, thereby make motor shaft and antifriction bearing can appear rotating the inflexibility, frictional resistance increases, lead to antifriction bearing card dead.

In view of the above-mentioned related art, the inventors have considered that there is a defect that when a large deviation of the coaxial accuracy occurs at the time of assembling the motor, the rolling bearing is easily stuck.

SUMMERY OF THE UTILITY MODEL

In order to make the difficult inflexible or the dead condition of card of rotation of appearing of antifriction bearing in the motor, this application provides a structure that antifriction bearing motor increases elastic steel bushing.

The application provides a structure that antifriction bearing motor increases elastic steel bushing adopts following technical scheme:

a structure for adding an elastic steel sleeve to a rolling bearing motor comprises two rolling bearings and a rotor assembly, wherein a motor shaft penetrates through inner rings of the two rolling bearings, the two rolling bearings are respectively positioned at two ends of the motor shaft and comprise a front support assembly and a rear support assembly, the front support component and the rear support component are respectively arranged at two ends of the rotor component, the front support component and the rear support component respectively comprise mounting grooves which are respectively a front mounting groove and a rear mounting groove, the front mounting groove and the rear mounting groove are respectively arranged at two ends of the rotor component, the rolling bearing is arranged in the mounting grooves, the rolling bearing and be equipped with the elastic steel bushing between the mounting groove, the elastic steel bushing outer wall with mounting groove inner wall butt, the elastic steel bushing inner wall with the outer wall butt of rolling bearing.

Through adopting above-mentioned technical scheme, the elastic steel bushing can warp through the elasticity pre-compaction, when installation antifriction bearing, antifriction bearing can do the adjustment in the elastic steel bushing slightly, thereby be difficult to appear the condition that the coaxial precision deviation appears in mounting groove inner wall and the antifriction bearing outer lane, thereby when making the motor shaft installation, the motor shaft, the line position precision of antifriction bearing and mounting groove axiality is more accurate, thereby make antifriction bearing in the motor be difficult for appearing rotating the inflexible or the dead condition of card, set up the technological requirement that the elastic steel bushing can reduce motor support inner wall machining precision, accelerate production efficiency, can also restrict the maximum amplitude of motor shaft during operation axle radial runout, make the motor during operation, the noise is littleer, it is not fragile more.

Preferably, the mounting groove is internally provided with a damping piece, the damping piece is positioned between the mounting groove and the rolling bearing, one side of the damping piece is abutted to the inner wall of the mounting groove, the other side of the damping piece is tightly attached to a rolling steel ball of the rolling bearing, the damping piece is sleeved on the motor shaft, and the inner wall of the damping piece is abutted to the motor shaft.

Through adopting above-mentioned technical scheme, set up the damper and hug closely with antifriction bearing's rolling steel ball, the damper produces effective pre-compaction to the bearing, reduces antifriction bearing's rolling steel ball and beats when rolling antifriction bearing's inner circle rotates to reduce the noise that the motor sent at the during operation, still can slow down the vibrations that transmit on the motor shaft when the motor operates simultaneously, play the physics buffering effect.

Preferably, the joint has the snap ring on the motor shaft, the snap ring is located two between the antifriction bearing, two are no less than in the snap ring setting the one side that the snap ring is close to antifriction bearing is close to rotor subassembly one side butt with two antifriction bearing respectively.

Through adopting above-mentioned technical scheme, when the motor operation, set up the snap ring and make the bearing be difficult for appearing the displacement because of the motor shaft vibrations to cause the damage of motor.

Preferably, the front support assembly and the rear support assembly are provided with bearing platforms, the bearing platforms are respectively fixedly connected with the front mounting groove and the rear mounting groove, the bearing platforms are close to the rotor assembly, one end of the rotor assembly is provided with a positioning hole, the rotor assembly comprises a rotor shell, a positioning shaft is fixedly connected to the rotor shell, and the positioning shaft is in plug-in fit with the positioning hole.

Through adopting above-mentioned technical scheme, make things convenient for the rotor subassembly to install on preceding bracket component and back bracket component, difficult emergence is eccentric when making the rotor subassembly installation simultaneously.

Preferably, two still be equipped with the spacing groove on the bearing platform, be equipped with the lug on the rotor case, the lug with the spacing groove cooperation of pegging graft.

Through adopting above-mentioned technical scheme, when the motor operation, the displacement or the eccentric condition can not appear because of the vibrations of motor to rotor housing easily.

Preferably, the two receiving tables are integrally formed with the front mounting groove and the rear mounting groove respectively.

Through adopting above-mentioned technical scheme, through will take over platform and mounting groove integrated into one piece, reduce motor housing's gap, can effectively shield the noise that the motor operation sent, make the noise in the motor be difficult for spreading.

Preferably, the front mounting groove and the rear mounting groove are far away from the rotor assembly, through holes are formed in one face of the rotor assembly, the two ends of the motor shaft extend out of the front support assembly and the rear support assembly from the two through holes respectively, sealing washers are arranged in the through holes, the outer walls of the sealing washers abut against the inner walls of the through holes, and the inner walls of the sealing washers abut against the motor shaft.

Through adopting above-mentioned technical scheme, set up seal ring, the leakproofness of reinforcing motor makes the difficult oil leak that takes place of motor, makes the difficult outside of passing out of motor of noise in the motor simultaneously to weaken the noise that the motor sent when moving.

Preferably, the rotor assembly, the front bracket assembly and the rear bracket assembly are detachably connected, and the rotor assembly is located between the front bracket assembly and the rear bracket assembly.

Through adopting above-mentioned technical scheme, dismantle the repair when making things convenient for the motor to damage.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through setting up the elastic steel bushing, the elastic steel bushing can be through elasticity pre-compaction deformation, and when making the motor shaft installation, the line position precision of motor shaft, antifriction bearing and mounting groove axiality is more accurate to the antifriction bearing in the messenger motor is difficult for appearing rotating the inflexible or the dead condition of card.

2. Through setting up the rolling steel ball of damper and antifriction bearing and hugging closely, the damper produces effective pre-compaction to the bearing, and the rolling steel ball that reduces antifriction bearing beats when rotating around antifriction bearing's inner circle to reduce the noise that the motor sent at the during operation, still can slow down the vibrations that transmit on the motor shaft at the motor when the motor operates simultaneously, play the physics buffering effect.

3. Through the insertion and connection matching of the limiting groove and the bump, when the motor runs, the rotor shell is not easy to displace or be eccentric due to the vibration of the motor.

Drawings

Fig. 1 is a structural section view of a rolling bearing motor with an added elastic steel sleeve.

Fig. 2 is an enlarged view of a in fig. 1.

Description of reference numerals:

1. a motor shaft; 2. a front carrier assembly; 21. a front mounting groove; 22. a front receiving table; 3. a rear bracket assembly; 31. a rear mounting groove; 32. a rear receiving table; 33. a shock absorbing member; 4. an elastic steel sleeve; 5. a sealing gasket; 6. a snap ring; 7. a rotor housing; 71. positioning the shaft; 72. a bump; 8. positioning holes; 9. a limiting groove; 10. a rolling bearing; 11. and (4) bolts.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a structure for increasing an elastic steel sleeve for a rolling bearing motor. Referring to fig. 1, including fore-stock subassembly 2, back-stock subassembly 3 and rotor subassembly, fore-stock subassembly 2 and back-stock subassembly 3 are installed respectively at the rotor subassembly both ends, and motor shaft 1 alternates at fore-stock subassembly 2, back-stock subassembly 3 and rotor subassembly.

Referring to fig. 1, rolling bearings 10 are installed in the front support assembly 2 and the rear support assembly 3, the motor shaft 1 is inserted into inner rings of the two rolling bearings 10, the inner rings of the two rolling bearings 10 are tightly matched with the motor shaft 1, and the two rolling bearings 10 are respectively located at two ends of the motor shaft 1.

Referring to fig. 1, the front bracket assembly 2 and the rear bracket assembly 3 each include mounting grooves, the two mounting grooves are a front mounting groove 21 and a rear mounting groove 31, the front mounting groove 21 and the rear mounting groove 31 are mounted at both ends of the rotor assembly, and the two rolling bearings are mounted in the front mounting groove 21 and the rear mounting groove 31, respectively.

Referring to fig. 1 and 2, all being equipped with elastic steel bushing 4 in preceding mounting groove 21 and the back mounting groove 31, elastic steel bushing 4 is cylindrical, and elastic steel bushing 4 inner circle diameter is the same with the bearing diameter, and 4 outer walls of elastic steel bushing and mounting groove inner wall butt, 4 outer walls of elastic steel bushing antifriction bearing 10 outer wall butt.

Referring to fig. 1 and 2, when assembling the motor, because elastic steel sleeve 4 has elasticity and elastic steel sleeve 4 can be through the elastic pre-compaction deformation, so when installation antifriction bearing 10, antifriction bearing 10 can do the adjustment slightly in elastic steel sleeve 4 to the condition that the coaxial precision deviation is big appears in mounting groove inner wall and antifriction bearing 10 outer lane is difficult to appear, thereby when making motor shaft 1 install, the slide precision of motor shaft 1, antifriction bearing 10 and mounting groove axiality is more accurate, thereby make antifriction bearing 10 in the motor difficult the appearance rotate the circumstances of inflexible or the card is dead.

Referring to fig. 1 and 2, the elastic steel sleeve 4 can limit the maximum radial runout amplitude of the motor shaft 1 during operation, so that the motor has lower noise and is less prone to damage during operation.

Referring to fig. 1 and 2, a damping member 33 is disposed between the rear mounting groove 31 and the rolling bearing 10, the damping member 33 is sleeved on the motor shaft 1, an inner wall of the damping member 33 is abutted to the motor shaft 1, one side of the damping member 33 is abutted to one surface of the rear mounting groove 31 close to the rotor assembly, and the other side of the damping member 33 is tightly attached to the rolling steel ball of the rolling bearing 10. The wave-shaped gasket has elasticity, so that the damping piece 33 can generate effective pre-pressing on the bearing, the rolling steel ball of the rolling bearing 10 can be reduced from jumping when rotating around the inner ring of the rolling bearing 10, the noise generated by the motor during working can be reduced, and meanwhile, when the motor runs, the damping piece 33 can slow down the vibration transmitted from the motor shaft 1 due to the self elastic energy, and the physical buffering effect can be achieved.

Referring to fig. 1, the joint has snap ring 6 on the

motor shaft

1, 6 inner walls of snap ring and 1 butt of motor shaft, and snap ring 6 is located two between the antifriction bearing 10, and two are no less than in the setting of snap ring 6, and in this embodiment again, snap ring 6 is provided with two, can also be three or four in other embodiments, and two snap rings 6 are close to the one side of antifriction bearing 10 and are close to rotor subassembly one side butt with two antifriction bearing 10 respectively, when the motor operation, set up snap ring 6 and make the bearing be difficult for because of the displacement appears in the vibrations of motor shaft 1 to cause the damage of motor.

Referring to fig. 1, preceding support assembly 2 and back support assembly 3 all are equipped with the bearing platform, two bearing platforms are preceding bearing platform 22 and back bearing platform 32 respectively, preceding bearing platform 22 and back bearing platform 32 respectively with preceding mounting groove 21 periphery and back mounting groove 31 periphery fixed connection, preceding bearing platform 22 and back bearing platform 32 respectively with preceding mounting groove 21 and back mounting groove 31 integrated into one piece, thereby reduce motor housing's gap, the noise that can effectively shield the motor operation and send, make the noise in the motor difficult spread.

Referring to fig. 1, the front bearing platform 22 and the rear bearing platform 32 are close to one end of the rotor assembly and are provided with four positioning holes 8, four positioning holes are arranged around the central line of the motor shaft 1, the rotor assembly comprises a rotor shell 7, the rotor shell 7 is close to four positioning shafts 71 fixedly connected to two ends of the two bearing platforms, the four positioning shafts 71 are respectively matched with the four positioning holes 8 in an inserting mode, the positioning shafts 71 and the positioning holes 8 are arranged, the rotor shell 7 and the two bearing platforms are convenient to position, the rotor assembly is convenient to install on the front support assembly 2 and the rear support assembly 3, and meanwhile the rotor assembly is not prone to eccentricity during installation.

Referring to fig. 1, preceding bearing platform 22 and back bearing platform 32 are close to rotor housing 7 and all are equipped with two spacing grooves 9 in one side, two spacing grooves 9 set up with motor shaft 1 central line symmetry, rotor housing 7 is close to two lugs 72 of two equal fixedly connected with of bearing platform one end, two lugs 72 set up with rotor housing 7 central line symmetry, lug 72 and stopper cooperation of pegging graft, set up lug 72 and spacing groove 9, when the motor operates, rotor housing 7 is difficult to appear displacement or eccentric condition because of the vibrations of motor.

Referring to fig. 1, preceding mounting groove 21 and back mounting groove 31 are kept away from the rotor subassembly has all been seted up the through-hole in the one side (not shown in the figure), 1 both ends of motor shaft are stretched out preceding support subassembly 2 and back support subassembly 3 from two through-holes respectively, all be equipped with seal ring 5 in two through-holes, seal ring 5 outer wall and through-hole inner wall butt, seal ring inner wall and 1 butt of motor shaft, through setting up seal ring 5, strengthen the leakproofness of motor, make the difficult oil leak that takes place of motor, make the difficult biography of noise in the motor simultaneously outside the motor, thereby weaken the noise that the motor sent when moving.

Referring to fig. 1, rotor housing 7, preceding support assembly 2 and can dismantle the connection between the back support assembly 3, and preceding support platform 22 and back support platform 32 can dismantle the connection through bolt 11, and rotor housing 7 is spacing between preceding support assembly 2 and back support assembly 3, through setting up rotor housing 7, can dismantle the connection between preceding support assembly 2 and the back support assembly 3, when making things convenient for the motor to damage, dismantles the repair.

The structural principle that the elastic steel sleeve is added to the rolling bearing motor in the embodiment is as follows:

referring to fig. 1 and 2, when assembling the motor, the elastic steel sleeve 4 is pressed into the front mounting groove 21 and the rear mounting groove 31, the shock absorbing member 33 is placed in the rear mounting groove 31, the two rolling bearings 10 are respectively pressed into the cylinder sleeves, the motor shaft 1 is inserted into the inner ring of the rolling bearing 10 in the rear mounting groove 31, the snap ring 6 and the rotor assembly are then mounted, the inner ring of the rolling bearing 10 in the front mounting groove 21 is sleeved on the motor shaft 1, and finally the front support assembly 2, the rotor assembly and the rear support assembly 3 are locked through the bolt 11.

Referring to fig. 1 and 2, under the action of the elastic steel sleeve 4, the situation that the coaxiality precision deviation is large is not easy to occur in the motor shaft 1, the mounting groove and the rolling bearing 10, so that the slide precision of the coaxiality of the motor shaft 1, the rolling bearing 10 and the mounting groove is more accurate when the motor shaft 1 is mounted, and the situation that the rolling bearing 10 in the motor is not flexible in rotation or is blocked is not easy to occur.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a structure that antifriction bearing motor increases elastic steel bushing, includes two antifriction bearing (10) and rotor subassembly, two motor shaft (1), two wear to be equipped with on the inner circle of antifriction bearing (10) are located respectively motor shaft (1) both ends, its characterized in that: including fore-stock subassembly (2) and after-poppet subassembly (3), fore-stock subassembly (2) and after-poppet subassembly (3) are installed respectively the rotor subassembly both ends, fore-stock subassembly (2) and all include the mounting groove on after-poppet subassembly (3), two the mounting groove is preceding mounting groove (21) and back mounting groove (31) respectively, preceding mounting groove (21) and back mounting groove (31) are installed respectively the rotor subassembly both ends, antifriction bearing (10) are installed the mounting groove, antifriction bearing (10) with be equipped with the elasticity steel bushing between the mounting groove, elasticity steel bushing outer wall with mounting groove inner wall butt, elasticity steel bushing (4) inner wall with antifriction bearing (10) outer wall butt.

2. The structure for adding the elastic steel sleeve to the rolling bearing motor according to claim 1, characterized in that: be equipped with damper (33) in the mounting groove, damper (33) are located the mounting groove with between antifriction bearing (10), damper (33) one side with mounting groove inner wall butt, damper (33) the opposite side with the rolling steel ball of antifriction bearing (10) is hugged closely, damper (33) cover is established on motor shaft (1), damper (33) inner wall with motor shaft (1) butt.

3. The structure for adding the elastic steel sleeve to the rolling bearing motor according to claim 2, wherein: motor shaft (1) goes up the joint and has snap ring (6), snap ring (6) are located two between antifriction bearing (10), snap ring (6) set up and are no less than two, two the one side that snap ring (6) are close to antifriction bearing (10) is close to rotor subassembly one side butt with two antifriction bearing (10) respectively.

4. The structure for adding the elastic steel sleeve to the rolling bearing motor according to claim 1, characterized in that: preceding support subassembly (2) and back support subassembly (3) all are equipped with the supporting station, two the supporting station respectively with preceding mounting groove (21) and back mounting groove (31) fixed connection, two the supporting station is close to on the bench the rotor subassembly one end all is equipped with locating hole (8), including rotor housing (7) on the rotor subassembly, fixedly connected with location axle (71) on rotor housing (7), location axle (71) with the cooperation of pegging graft of locating hole (8).

5. The structure for adding the elastic steel sleeve to the rolling bearing motor according to claim 4, wherein: two still be equipped with spacing groove (9) on the bearing platform, be equipped with lug (72) on rotor housing (7), lug (72) with spacing groove (9) are pegged graft and are cooperated.

6. The structure for adding the elastic steel sleeve to the rolling bearing motor according to claim 4, wherein: the two bearing tables are integrally formed with the front mounting groove (21) and the rear mounting groove (31) respectively.

7. The structure for adding the elastic steel sleeve to the rolling bearing motor according to claim 1, characterized in that: preceding mounting groove (21) and back mounting groove (31) are kept away from the rotor subassembly has all seted up the through-hole in one side, motor shaft (1) both ends are followed two respectively the through-hole stretches out preceding support subassembly (2) and back support subassembly (3), two all be equipped with seal ring (5) in the through-hole, seal ring (5) outer wall with through-hole inner wall butt, seal ring inner wall with motor shaft (1) butt.

8. The structure for adding the elastic steel sleeve to the rolling bearing motor according to claim 1, characterized in that: the rotor assembly, the front support assembly (2) and the rear support assembly (3) are detachably connected, and the rotor assembly is located between the front support assembly (2) and the rear support assembly (3).