CN217898518U - Drying cylinder adopting CARB bearing - Google Patents

Abstract

The utility model provides an adopt dryer of CARB bearing, a serial communication port, include: the drying cylinder body is provided with a main shaft, the CRAB bearing passes through the main shaft and is connected with the drying cylinder main body, the CARB bearing comprises an outer ring, an inner ring and rollers, the outer ring is arranged at the axial outer end of the CARB bearing, the inner ring is arranged at the axial inner end of the CARB bearing, the rollers are uniformly distributed between the outer ring and the inner ring, and the CRAB bearing is arranged in the bearing seat. The CARB bearing combines the characteristics of automatic aligning and axial displacement, so that the inner ring and the outer ring can displace relative to each other, the roller can automatically guide the position, the inner ring and the outer ring of the bearing can displace relative to each other, the requirement that a drying cylinder is heated to expand and extend outwards can be met, the service life of the bearing is prolonged while the operation is reliable, and the drying cylinder can stably operate for a longer time.

Description

Drying cylinder adopting CARB bearing

Technical Field

The utility model belongs to dryer part field specifically is an adopt dryer of CARB bearing.

Background

The drying cylinder is a common drying device in paper making products, plays an important role in the link of drying paper, and has obvious effects of improving the paper making efficiency, improving the paper performance and reducing the paper making energy consumption, wherein the bearing plays an important role in the drying cylinder.

The axial displacement of ordinary bearing leans on spindle nose push-and-pull inner circle, and the roller assembly is dragged to the inner circle, and roller assembly drags the outer lane again and accomplishes, if the installation is careless, the cooperation tolerance of outer lane and bearing frame inner chamber is not enough, can make roller assembly because of axial load is big on the left and impaired, and the bearing life-span can reduce by a wide margin.

The ordinary bearing is at bearing frame inner chamber axial displacement, and after the certain time of totalizing, the inner chamber has slight sliding wear for the fit tolerance grow of bearing and bearing frame inner chamber will produce the vibration after to a certain degree, finally influences dryer stability of moving and bearing life-span.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of the present invention provides a drying cylinder using CARB bearing, which is used to solve the above technical problem.

The utility model discloses an adopt dryer of CARB bearing, include:

the drying cylinder body is provided with a main shaft;

the CRAB bearing is connected with the drying cylinder main body through the main shaft, the CARB bearing comprises an outer ring, an inner ring and rollers, the outer ring is arranged at the axial outer end of the CARB bearing, the inner ring is arranged at the axial inner end of the CARB bearing, and the rollers are uniformly distributed between the outer ring and the inner ring;

a bearing mount in which the CRAB bearing is disposed.

In some embodiments, the contact surface of the outer ring and the roller and the contact surface of the inner ring and the roller are both arc surfaces.

In some embodiments, the outer race is the same cross-sectional shape as the inner race.

In some embodiments, the inner race is movable in an axial direction of the CRAB bearing.

In some embodiments, the CRAB bearing is a CRAB bearing made of GCr 15.

In some embodiments, an inner end cap is arranged on one side of the CARB bearing, and an outer end cap is arranged on one side of the CARB bearing away from the inner end cap.

In some embodiments, the CARB bearing is provided with a lock nut on the side where the outer end cap is provided.

In some embodiments, the main shaft is provided with a positioning shoulder, and the height of the inner ring relative to the main shaft is larger than that of the positioning shoulder relative to the main shaft.

In some embodiments, the end of the cylinder remote from the CARB bearing is provided with a plain bearing.

In some embodiments, the main shaft is provided with a hot steam inlet.

The utility model discloses beneficial effect for prior art possesses: the CARB bearing combines the characteristics of automatic centering and axial displacement, so that the inner ring and the outer ring can be displaced mutually, the roller can be automatically guided, whether the inner ring has axial displacement and/or misalignment relative to the outer ring or not can be positioned at a position where the load is averagely acted on the whole roller, the displacement between the inner ring and the outer ring can not influence radial motion, the inner ring and the outer ring of the bearing can be displaced mutually, the requirement that a drying cylinder is heated and expanded to extend outwards can be met, the service life of the bearing is prolonged while the operation is reliable, and the drying cylinder can be stably operated for a longer time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural view of a floating side of a drying cylinder using CARB bearing according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the inner and outer races of the CARB bearing of the embodiment of the present invention engaged before heating;

FIG. 3 is a schematic diagram of the matching of the inner ring and the outer ring of the CARB bearing of the embodiment of the invention after the CARB bearing is heated and expanded;

fig. 4 is an overall schematic view of a drying cylinder using CARB bearing according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a conventional roller bearing according to an embodiment of the present invention.

Illustration of the drawings: 1. a dryer body; 11. a main shaft; 111. positioning the shaft shoulder; 112. a hot steam inlet; 2. a CARB bearing; 21. an outer ring; 22. an inner ring; 23. a roller; 3. a bearing seat; 4. an inner end cap; 5. an outer end cover; 6. and locking the nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Referring to fig. 1, an embodiment of the present application provides a drying cylinder using a CARB bearing, including a drying cylinder body 1, a CRAB bearing 2, and a bearing block 3; the drying cylinder body 1 is provided with a main shaft 11, the drying cylinder body 1 is connected with a CRAB bearing 2 through the main shaft 11, the CARB bearing 2 comprises an outer ring 21, an inner ring 22 and rollers 23, the outer ring 21 is arranged at the axial outer end of the CARB bearing 2, the inner ring 22 is arranged at the axial inner end of the CARB bearing 2, and the rollers 23 are uniformly distributed between the outer ring 21 and the inner ring 22; the CRAB bearing is arranged in a bearing seat 3.

In some embodiments, the floating side of the cylinder uses a CRAB bearing 2, preferably, the contact surface between the outer ring 21 and the rollers 23 and the contact surface between the inner ring 22 and the rollers 23 are both arc surfaces, the rollers 23 are uniformly distributed between the outer ring 21 and the inner ring 22, the CARB bearing 2 combines the characteristics of automatic centering and axial displacement, so that the CARB bearing has the characteristics that the inner ring and the outer ring can be displaced with each other, and the rollers 23 can be automatically guided, and the CARB bearing 2 always has a position for evenly applying load to the whole rollers 23 no matter whether the inner ring 22 is axially displaced and/or misaligned with respect to the outer ring 21, thereby ensuring that the displacement between the inner ring and the outer ring does not influence radial movement. The CARB bearing 2 absorbs axial centering errors and axial displacements simultaneously. The service life can be prolonged, the running time can be increased, and the maintenance cost can be reduced.

Preferably, an inner end cap 4 is arranged on one side of the CARB bearing 2, an outer end cap 5 is arranged on one side of the CARB bearing 2 away from the inner end cap 4, and the inner end cap 4 and the outer end cap 5 are pressed on the outer ring 21. It can be understood that, when equipment moves, the dryer is heated and expands and outwards extends, the operation side of CARB bearing 2 configuration needs outwards to carry out axial displacement as the floating end, and the spindle nose passes through location shaft shoulder 111 and pushes and pulls bearing inner race 22 and outwards displaces, though bearing outer lane 21 is by 2 end cover pressfitting immobile, but the inner and outer circles of bearing self can carry out the displacement each other, can satisfy the dryer and be heated the inflation and outwards extend the demand.

Further, referring to fig. 2 to 3, the original state of the bearing is that the outer ring 21 is fixed, the inner ring 22 is convex S1 compared with the outer ring 21, the drying cylinder is expanded by heat, the shaft head pushes and pulls the inner ring 22 to displace S outwards, and the state of the bearing is changed to that the inner ring 22 is concave S2 compared with the outer ring 21 (S2 = S-S1). The damage of the bearing caused by axial movement can be avoided, the service life of the bearing is prolonged while the operation is reliable, and the drying cylinder can stably operate for a longer time.

Understandably, the CARB bearing 2 has high bearing capacity and low friction force, has the compactness and high radial bearing capacity of a needle bearing, simplifies the bearing configuration of a floating end, saves mechanism space and reduces weight. Further, due to the automatic position guiding function of the roller 23, the problem that the roller 23 is damaged due to larger axial load caused by insufficient matching tolerance of the outer ring 21 and the inner cavity of the bearing seat 3 during installation is avoided, and the service life of the bearing is prolonged.

In some embodiments, the CRAB bearing 2 is made of a GCr15 material, the GCr15 material has a small alloy content, and has a high hardness, a uniform structure, a good wear resistance and a high contact fatigue performance after heat treatment, and of course, the CRAB bearing 2 may also be made of other materials, which are not limited herein.

Referring to fig. 4 to 5, in some embodiments, the other end of the drying cylinder is fixed by using a common roller bearing, and the outer end cover 5 and the inner end cover 4 and the common roller bearing are kept at a gap of 35-45mm at the fixed side end. When the equipment is operated, high-temperature hot steam enters from the fixed side shaft head of the drying cylinder and is discharged from the floating side shaft head of the drying cylinder, the drying cylinder expands due to heating and extends outwards, when the whole bearing is pushed outwards by the inner ring 22 of the push-pull bearing, the outer end cover 5, the inner end cover 4 and the common roller bearing keep 35-45mm of gaps, so that the bearing can axially displace in the inner cavity of the bearing seat 3, the bearing is ensured not to burst due to the expansion of the drying cylinder due to heating when the equipment is operated, and the locking nut 6 fixes the bearing of the common roller 23 on the main shaft 11.

Further, the CRAB bearing 2 may be provided with a seal that extends the useful life of the CRAB bearing and eliminates the need for grease replenishment during use of the CRAB bearing 2.

In some embodiments, the main shaft 11 is provided with a hot steam inlet 112, so that hot steam can enter the drying cylinder from the hot steam inlet 112 for the drying process.

It can be understood that, in this embodiment, a dryer that adopts CARB bearing includes a dryer body, a CRAB bearing and a bearing pedestal, the dryer body is provided with a main shaft, the dryer body is connected with the CRAB bearing through the main shaft, the CARB bearing includes an outer ring, an inner ring and rollers, the outer ring is disposed at the axial outer end of the CARB bearing, the inner ring is disposed at the axial inner end of the CARB bearing, the rollers are uniformly distributed between the outer ring and the inner ring, and the CRAB bearing is disposed in the bearing pedestal. The CARB bearing combines the characteristics of automatic aligning and axial displacement, makes its inner and outer lane can carry out the displacement each other, and the roller can automatic guide, and the inner and outer lane of bearing self can carry out the displacement each other, can satisfy the dryer and be heated the inflation and toward the demand of outer extension, extends bearing life when the operation is reliable, makes the dryer can the more long-term steady operation.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The term "comprising", without further limitation, means that the element so defined is not excluded from the group consisting of additional identical elements in the process, method, article, or apparatus that comprises the element.

Claims (10)

1. A dryer cylinder using a CARB bearing, comprising:

the drying cylinder body is provided with a main shaft;

the CRAB bearing is connected with the drying cylinder body through the main shaft, the CARB bearing comprises an outer ring, an inner ring and rollers, the outer ring is arranged at the axial outer end of the CARB bearing, the inner ring is arranged at the axial inner end of the CARB bearing, and the rollers are uniformly distributed between the outer ring and the inner ring;

a bearing mount in which the CRAB bearing is disposed.

2. A drying cylinder with CARB bearing as per claim 1, characterized by that, the contact surface of the outer ring and the roller and the contact surface of the inner ring and the roller are both arc surfaces.

3. A drying cylinder using CARB bearing according to claim 2, characterised in that the outer ring has the same cross-sectional shape as the inner ring.

4. A drying cylinder with CARB bearing according to claim 3, characterized in that the inner ring can move along the axial direction of the CRAB bearing.

5. The drying cylinder with the CARB bearing as claimed in claim 1, wherein the CRAB bearing is a CRAB bearing made of GCr 15.

6. The CARB bearing drying cylinder as claimed in claim 1, wherein one side of CARB bearing is provided with an inner end cap, and one side of CARB bearing away from the inner end cap is provided with an outer end cap.

7. The drying cylinder adopting the CARB bearing as claimed in claim 6, wherein a locking nut is arranged at one side of the CARB bearing where the outer end cover is arranged.

8. A drying cylinder with CARB bearing as claimed in claim 1, characterized in that said main shaft is provided with a positioning shoulder, the height of said inner ring relative to the main shaft is greater than the height of said positioning shoulder relative to the main shaft.

9. A drying cylinder using CARB bearing as claimed in claim 1, characterized in that the end of the drying cylinder far from the CARB bearing is provided with a common bearing.

10. Drying cylinder using CARB bearing according to claim 1, characterised in that the main shaft is provided with hot steam inlet.

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