CN218663861U - Transmission roller convenient to change bearing - Google Patents

Abstract

The utility model discloses a transmission roller convenient to change bearing in the roller field, including the roller shell, the center of roller shell runs through along length direction and is provided with the center pin, the center pin includes first axis body, the second axis body, the third axis body, the tip that the roller shell corresponds first axis body and third axis body sets up sprocket fixing base and connecting seat respectively, the part that the sprocket fixing base stretches out the roller shell is provided with the rotation wheel, be provided with rolling bearing between sprocket fixing base and the first axis body, be provided with rolling bearing between connecting seat and the third axis body, two rolling bearing's outer lane respectively with sprocket fixing base and connecting seat butt, two rolling bearing's inner circle inwards one side all with second axis body end butt, two rolling bearing's inner circle outwards one side all overlaps and is equipped with adjusting nut, the center pin corresponds adjusting nut and is provided with the external screw thread, first axis body end is provided with the connecting hole, the third axis body end is provided with the milling flutes. The utility model discloses reduce the maintenance cost, easy operation is convenient.

Description

Transmission roller convenient to change bearing

Technical Field

The utility model belongs to the technical field of the roller, in particular to transmission roller convenient to change bearing.

Background

In the prior art, a roller refers to a cylindrical rotatable object in a machine, and a power source (e.g., a motor) commonly used in the machine drives the roller to drive other materials to advance or utilizes the roller to generate pressure to process the materials.

A Bearing (Bearing) is an important part in the modern roller equipment. Its main function is that the supporting machine roller barrel turns, reduces the coefficient of friction in its motion process to guarantee its gyration precision, in the use, the bearing can be regularly because the too big wearing and tearing phenomenon that appears of atress, seriously influences the stationarity in the transmission course, its weak point lies in: when the bearing needs to be maintained and replaced, the bearing is usually arranged inside the roller, and the roller is designed in an integral manner, so that the integral replacement is needed, unnecessary waste is caused, the use and maintenance cost is increased, and the operation is complicated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a transmission roller convenient to change bearing can make things convenient for, carry out the dismouting to the axial both ends of roller fast, improves personnel work efficiency.

The purpose of the utility model is realized like this: the utility model provides a transmission roller convenient to change bearing, includes the roller shell, the center of roller shell runs through along length direction and is provided with the center pin, the center pin includes first axis body, second axis body, third axis body, the radius of first axis body and third axis body all is less than the second axis body, the tip that the roller shell is close to first axis body is provided with the sprocket fixing base, the part that the sprocket fixing base stretches out the roller shell is provided with the runner, the end that the roller shell is close to the third axis body is provided with the connecting seat, be provided with rolling bearing between sprocket fixing base and the first axis body, be provided with rolling bearing between connecting seat and the third axis body, two rolling bearing's outer lane respectively with sprocket fixing base and connecting seat butt, two rolling bearing's inner circle inboard one side all with second axis body end butt, two rolling bearing's inner circle outward one side all overlaps and is equipped with adjusting nut, the center pin corresponds adjusting nut and is provided with the external screw thread, first axis body end is provided with the connecting hole, third axis body end is provided with the milling flutes.

The utility model discloses during the use, fix the roller in the frame through connecting hole and milling flutes on the center pin, the during operation rotates the roller shell that the wheel drive is connected with the sprocket fixing base, and the center pin is motionless, and the roller shell transmits the revolving force for the connecting seat, and sprocket fixing base and connecting seat drive two rolling bearing's outer lane together rotate, and rolling bearing's inner circle locking is between adjusting nut and the second shaft body, compares with prior art, the beneficial effects of the utility model reside in that: two point type center pin supporting construction has improved roller shell concentricity and stability when rotating, can lock the position of rolling bearing on first axis body and third axis body through adjusting nut, when needs are changed rolling bearing, can realize rolling bearing's free dismouting on the center pin through the adjusting nut who dismantles both ends, has reduced the maintenance cost, and easy operation is convenient.

As a further improvement, be provided with the adapter sleeve between sprocket fixing base and the roller shell, be equipped with spacing boss one on the sprocket fixing base, the one end of adapter sleeve is contradicted on spacing boss one, the one end that the adapter sleeve is close to spacing boss one is equipped with the fixed boss of outside extension, the tip and the fixed boss butt of roller shell.

As a further improvement, the sprocket fixing base corresponds rolling bearing and is provided with spacing step one, rolling bearing's outer lane and a spacing step butt, the connecting seat corresponds rolling bearing and is provided with spacing step two, rolling bearing's outer lane and two butts of spacing step, the connecting seat corresponds the roller shell and is provided with the spacing boss two of outside extension, the tip butt of spacing boss two and roller shell.

As a further improvement of the utility model, be provided with damping spring and retaining ring between third axis body and the rolling bearing, the one end and the damping spring butt of retaining ring, the other end of retaining ring and rolling bearing's inner circle butt.

As a further improvement, two one side of adjusting nut outwards all is provided with the dirt proof boot, all leave the clearance between sprocket fixing base and the connecting seat and the corresponding dirt proof boot.

As a further improvement of the utility model, the outside of roller shell is provided with the protective sheath.

Drawings

Fig. 1 is a cross-sectional view of the present invention.

Fig. 2 is a front view of the central shaft.

Fig. 3 is a partially enlarged view of a portion a in fig. 1.

Fig. 4 is a partially enlarged view of fig. 1 at B.

Wherein, 1 roller shell, 2 center pins, 201 first axis body, 202 second axis body, 203 third axis body, 204 external screw thread, 205 connecting holes, 206 milling flutes, 3 sprocket fixing bases, 301 spacing boss one, 302 spacing step one, 4 rolling wheels, 5 connecting seats, 501 spacing step two, 502 spacing boss two, 6 rolling bearing, 7 adjusting nut, 8 adapter sleeves, 801 fixed boss, 9 damping spring, 10 retaining rings, 11 dust sheaths, 12 protective sheaths.

Detailed Description

As shown in fig. 1-4, a transmission roller convenient for replacing a bearing comprises a roller shell 1, wherein a central shaft 2 penetrates through the center of the roller shell 1 along the length direction, the central shaft 2 comprises a first shaft body 201, a second shaft body 202 and a third shaft body 203, and the radiuses of the first shaft body 201 and the third shaft body 203 are smaller than that of the second shaft body 202; a chain wheel fixing seat 3 is arranged at the end part, close to the first shaft body 201, of the roller shell 1, and a rotating wheel 4 is arranged at the part, extending out of the roller shell 1, of the chain wheel fixing seat 3; a connecting sleeve 8 is arranged between the chain wheel fixing seat 3 and the roller shell 1, a first limiting boss 301 is arranged on the chain wheel fixing seat 3, one end of the connecting sleeve 8 props against the first limiting boss 301, a fixing boss 801 extending outwards is arranged at one end, close to the first limiting boss 301, of the connecting sleeve 8, and the end part of the roller shell 1 is abutted to the fixing boss 801; a rotating bearing 6 is arranged between the chain wheel fixing seat 3 and the first shaft body 201, a first limit step 302 is arranged on the chain wheel fixing seat 3 corresponding to the rotating bearing 6, and the outer ring of the rotating bearing 6 is abutted against the first limit step 302; a connecting seat 5 is arranged at the end part of the roller shell 1 close to the third shaft body 203, a rotating bearing 6 is arranged between the connecting seat 5 and the third shaft body 203, the connecting seat 5 is provided with a second limiting step 501 corresponding to the rotating bearing 6, the outer ring of the rotating bearing 6 is abutted against the second limiting step 501, the inward sides of the inner rings of the two rotating bearings 6 are both abutted against the end part of the second shaft body 202, one outward side of the inner ring of each rotating bearing 6 is sleeved with an adjusting nut 7, the central shaft 2 is provided with an external thread 204 corresponding to the adjusting nut 7, and the axial displacement of the central shaft 2 in the operation process can be effectively reduced when the two rotating bearings 6 support the central shaft 2; the outward sides of the two adjusting nuts 7 are respectively provided with a dustproof sleeve 11, and gaps are reserved between the chain wheel fixing seat 3 and the connecting seat 5 and the corresponding dustproof sleeves 11; the connecting seat 5 is provided with a second outward extending limiting boss 502 corresponding to the roller shell 1, and the second limiting boss 502 is abutted against the end part of the roller shell 1; the end part of the first shaft body 201 is provided with a connecting hole 205, and the end part of the third shaft body 203 is provided with a milling groove 206; the outer side of the roller shell 1 is also provided with a protective sleeve 2.

As shown in fig. 4, in order to absorb the vibration generated when the roller operates, a damper spring 9 and a retainer ring 10 are provided between the third shaft body 203 and the rolling bearing 6, one end of the retainer ring 10 abuts against the damper spring 9, and the other end of the retainer ring 10 abuts against the inner race of the rolling bearing 6.

The utility model discloses when using, fix the roller in the frame through connecting hole 205 and milling flutes 206 on the center pin 2, in operation, it drives roller shell 1 of being connected with sprocket fixing base 3 to rotate wheel 4, center pin 2 is motionless, roller shell 1 transmits the revolving force for connecting seat 5, sprocket fixing base 3 and connecting seat 5 drive two rolling bearing 6's outer lane together and rotate, adjusting nut 7 locks rolling bearing 6's inner circle in the side of second shaft body 202 or retaining ring 10, 2 bearing structure on two point type center pin have improved roller shell 1 concentricity and stability when rotating, 11 make outside dust be difficult to get into inside the roller of dust cover, the utility model has the advantages of: the positions of the rotating bearing 6 on the first shaft body 201 and the third shaft body 203 can be locked through the adjusting nuts 7, when the rotating bearing 6 needs to be replaced, the rotating bearing 6 can be freely disassembled and assembled on the central shaft 2 through the adjusting nuts 7 at two ends, the maintenance cost is reduced, and the operation is simple and convenient.

The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some replacements and transformations for some technical features without creative labor according to the disclosed technical contents, and these replacements and transformations are all within the protection scope of the present invention.

Claims (6)

1. The transmission roller convenient for bearing replacement comprises a roller shell, wherein a center shaft penetrates through the center of the roller shell along the length direction, and is characterized in that the center shaft comprises a first shaft body, a second shaft body and a third shaft body, the radiuses of the first shaft body and the third shaft body are smaller than those of the second shaft body, a chain wheel fixing seat is arranged at the end part, close to the first shaft body, of the roller shell, a rotating wheel is arranged at the part, extending out of the roller shell, of the chain wheel fixing seat, a connecting seat is arranged at the end part, close to the third shaft body, of the roller shell, a rotating bearing is arranged between the chain wheel fixing seat and the first shaft body, rotating bearings are arranged between the connecting seat and the third shaft body, the outer rings of the rotating bearings are respectively abutted against the chain wheel fixing seat and the connecting seat, the inward sides of the inner rings of the rotating bearings are abutted against the end part of the second shaft body, adjusting nuts are sleeved on the outward sides of the inner rings of the rotating bearings, external threads are arranged on the center shaft corresponding to the adjusting nuts, a connecting hole is arranged at the end part of the first shaft body, and a milling groove is arranged at the end part of the third shaft body.

2. The conveying roller convenient for bearing replacement as claimed in claim 1, wherein a connecting sleeve is arranged between the sprocket fixing seat and the roller shell, a first limit boss is arranged on the sprocket fixing seat, one end of the connecting sleeve abuts against the first limit boss, a fixed boss extending outwards is arranged at one end of the connecting sleeve close to the first limit boss, and the end of the roller shell abuts against the fixed boss.

3. The conveying roller convenient for bearing replacement as claimed in claim 2, wherein the sprocket fixing seat is provided with a first limit step corresponding to the rotary bearing, the outer ring of the rotary bearing abuts against the first limit step, the connecting seat is provided with a second limit step corresponding to the rotary bearing, the outer ring of the rotary bearing abuts against the second limit step, the connecting seat is provided with a second limit boss extending outwards corresponding to the roller housing, and the second limit boss abuts against the end of the roller housing.

4. The conveying roller convenient for bearing replacement according to claim 3, wherein a damping spring and a check ring are arranged between the third shaft body and the rotating bearing, one end of the check ring is abutted against the damping spring, and the other end of the check ring is abutted against the inner ring of the rotating bearing.

5. The conveying roller convenient for bearing replacement according to claim 4, wherein dust-proof sleeves are arranged on the outward sides of the two adjusting nuts, and gaps are reserved between the sprocket fixing seat and the connecting seat and between the sprocket fixing seat and the corresponding dust-proof sleeves.

6. A transfer drum for facilitating bearing change according to any one of claims 1 to 5 wherein the outer side of the drum shell is provided with a protective sleeve.

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