CN215947724U - Carbon fiber breast roll assembly for shaking - Google Patents

Abstract

Traditional area shakes breast roll bearing structure that shakes has two kinds, one kind is the support formula, and another kind of structure is the suspension type, and these two kinds of structure common points are exactly, and breast roll and bearing frame etc. swing as a whole, and the shortcoming is: a easy fatigue fracture for supporting or the elastic plate of hanging under high-speed vibration, in order to solve the defect that the breast roll exists that shakes in the prior art, strutting arrangement is easy fatigue fracture's problem under high-speed vibration promptly, the application provides a carbon fiber breast roll assembly for shaking, the breast roll bearing frame is fixed on the breast roll supporting seat, but the breast roll supports in the bearing frame through axial displacement's special bearing, can rotate, can the axial oscillation again, do not have the vulnerable part of short-lived, can guarantee the smooth operation of paper machine.

Description

Carbon fiber breast roll assembly for shaking

Technical Field

The utility model belongs to papermaking equipment, and particularly relates to a carbon fiber breast roll assembly for shaking.

Background

The breast roll of a paper machine is the first roll of the wire section and directly affects the degree of the stock distribution in the wire section and thus the quality of the final paper. One of the measures often taken to improve the uniformity of the sizing is to apply a shaking motion to the breast roll. The breast roll vibration device is arranged on the transmission side of the breast roll and can enable the breast roll to quickly swing along the axial direction. The forming net on the breast roll can also quickly swing along the axial direction, thereby improving the cross-width uniformity of the pulp on the net.

The traditional breast roll supporting structure with the shaking function has two types, one type is a supporting type, as shown in figure 1, bearing blocks at two ends of the breast roll are supported by a carbon fiber plate or a stainless steel spring plate, and the breast roll is axially and rapidly swung under the support of the elastic plate by the axial force generated by the shaking device. The other structure is a hanging type, as shown in figure 2, the breast roll is hung up by an elastic plate through a bearing seat. The common point of these two structures is that the breast roll and the bearing block etc. oscillate as a whole. The disadvantages are that: the elastic plate for supporting or hanging is easy to fatigue fracture under high-speed vibration, and the operation is troublesome when the net is replaced. In addition, the traditional breast rolls are all made of steel or cast iron, so that the weight is large, the inertia is large, and the power consumption is large during high-speed vibration.

The rolls of a paper machine are used for guiding a forming wire, a felt, a dry wire and paper. The roller surface coating material has different use and different roller surface coating materials, and some rubber coatings, some polyurethane coatings and some chromium coatings. Most rollers are provided with bearings at the shaft heads, and the rollers are supported by the bearing blocks. In the use process of the roller, the slipping phenomenon of the inner diameter of the bearing and the outer diameter of the shaft head bearing often occurs. Once slipping occurs, the shaft head is worn and scrapped quickly.

There are two main common roll structures, as shown in fig. 3, one structure roll is composed of a roll barrel, two choke plugs at two ends respectively, and a shaft head at two ends respectively. The choke plug inner diameter is in interference fit with the shaft head outer diameter, and heating assembly is needed. The inner diameters of the two ends of the roller are in interference fit with the outer diameter of the choke plug, and the roller is also in heating assembly. The second structure is similar to the first structure, only the shaft head and the choke plug are integrally formed, and the roller consists of a roller and two shaft heads at two ends respectively. The outer diameter of the large end of the shaft head is in interference fit with the inner diameters of the two ends of the roller, and the shaft head is assembled after being heated. If the traditional roll shaft head is abraded, the replaced roll shaft head needs to be subjected to interference assembly after being heated on the roll, and the coating outside the roll surface is damaged due to heating. Therefore, once wear of the head of the shaft occurs, it is difficult to perfectly repair the roll.

SUMMERY OF THE UTILITY MODEL

The supporting device aims to solve the defect that the breast roll with shake in the prior art is easy to fatigue and break under high-speed vibration; and the inconvenient spindle nose of changing of breast roll, change the problem that the spindle nose can lead to great loss, in addition, in order to alleviate breast roll weight, reduce the device energy consumption that shakes, this application provides a carbon fiber breast roll assembly for shaking.

The object of the utility model is achieved in the following way: the utility model provides a carbon fiber breast roll assembly for shaking, includes the breast roll, the breast roll both ends respectively set up the spindle nose, and the spindle nose sets up bearing device, its characterized in that: the bearing in the bearing device is a special bearing, the special bearing comprises a bearing outer ring, a bearing inner ring, rollers and a retainer, the width of the bearing inner ring is 25-30mm wider than that of the bearing outer ring, the rollers are cylindrical, arc chamfers are arranged at two ends of the rollers, the retainer is arranged in the bearing outer ring, and the rollers are arranged in the retainer.

The shaft heads are respectively an operation shaft head and a transmission shaft head, the end part of the transmission shaft head is provided with a coupling, the coupling comprises a bearing chamber, the end part of the transmission shaft head is arranged in the bearing chamber, and two tapered roller bearings are arranged between the end part of the transmission shaft head and the bearing chamber.

Compared with the prior art, the application has the advantages that:

the breast roll bearing seat is fixed on the breast roll supporting seat, the breast roll is supported in the bearing seat through a special bearing capable of moving axially, can rotate and axially swing, has no wearing parts with short service life, and can ensure the smooth operation of the paper machine.

Drawings

FIG. 1 is a schematic view of a conventional supporting breast roll support structure;

FIG. 2 is a schematic view of a conventional hanging breast roll support structure;

FIG. 3 is a schematic view of a conventional breast roll nose configuration;

FIG. 4 is a schematic view of the end face of the breast roll support pedestal of the present application;

FIG. 5 is a schematic structural diagram of the present application;

FIG. 6 is a schematic view of the construction of the breast roll bearing arrangement of the present application;

FIG. 7 is a schematic view of a breast roll coupling of the present application;

FIG. 8 is a schematic structural diagram of a replaceable shaft head structure of a breast roll according to the present application;

fig. 9 is an end view of the replaceable shaft head structure of the breast roll of the present application.

Wherein, 1, a roller; 2. choke plug; 21. an outer cylinder; 22. an annular plate; 222. an aperture; 23. an inner cylinder at the roller end; 24. an inner sleeve; 25. a rib plate; 26. a shear pin; 3. a tensioning sleeve; 4. a transmission shaft head; 41. a second section at the inner end of the shaft head; 42. a shaft head flange plate; 43. the tail end of the shaft head; 5. a coating layer; 6. a baffle plate; 7. a bearing device; 71. a bearing seat; 72. a special bearing; 73. a bearing device oil seal; 8. a coupling; 81. a bearing chamber; 82. a tapered roller bearing; 83. a coupler oil seal; 9. a shaking device; 91. a shake output shaft; 10. and operating the shaft head.

Detailed Description

The present application is not limited to the following examples, and specific implementations may be determined according to the technical solutions and practical situations of the present application.

In this application, unless otherwise expressly stated or limited, the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description only, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are therefore not to be considered limiting of the present application.

Referring to fig. 5, a carbon fiber breast roll assembly for shaking comprises a breast roll, wherein shaft heads are arranged at two ends of the breast roll and are divided into an operation shaft head 10 and a transmission shaft head 4, bearing devices 7 are respectively arranged on the operation shaft head 10 and the transmission shaft head 4, the end part of the transmission shaft head 4 is connected with one end of a shaking output shaft 91 through a coupler 8, the other end of the shaking output shaft 91 is connected with a shaking device 9, and the two bearing devices 7 are respectively fixed on a breast roll supporting seat shown in fig. 4.

Taking the transmission shaft head 4 as an example for explanation, referring to fig. 6, the bearing device 7 comprises a bearing seat 71, an outer ring of a special bearing 72 is fixed in the bearing seat 71, an inner ring is fixed on the transmission shaft head 4, the special bearing 72 consists of a bearing outer ring, a bearing inner ring, a roller and a retainer, the width of the bearing inner ring is 25-30mm wider than that of the bearing outer ring, the roller is in a cylindrical shape with arc chamfers at two ends, the retainer is arranged in the bearing outer ring, and the roller is arranged in the retainer, so that the roller of the special bearing 72 can normally rotate on the bearing inner ring and can also smoothly axially move, and bearing device oil seals 73 are arranged between two ends of the bearing seat 71 and the transmission shaft head 4 to prevent oil leakage; the bearing means 7 on the operating stub shaft 10 is constructed in the same manner as the drive stub shaft 4.

The special bearing 72 of the present application is distinguished from the prior art axially movable cylindrical roller bearings: the widths of the inner ring and the outer ring of the standard cylindrical roller bearing are equal, and when the bearing is installed, the inner ring and the outer ring can be used after being axially staggered to a certain extent, but only can rotate in the operation process, and cannot continuously axially move back and forth for a long time. This patent breast roller amount of movement generally can reach 15mm, and actual motion is generally 10~13, and the swing frequency is generally 600~800 times/second, so the special bearing inner race is a lot of than the outer lane width greatly, and in addition, the roller shape has also carried out optimal design, more is fit for axial quick travel.

Bearing devices 7 at two ends of the breast roll are identical in structure, bearing seats 71 of the bearing devices 7 are fixed on a breast roll supporting seat, a breast roll body swings at a high speed along the axial direction under the driving of a shaking device 9, and rotates around the axis under the driving of a forming net, and the bearing devices 7 and the breast roll supporting seat cannot swing by adopting a special bearing 72 capable of extending axial movement.

Referring to fig. 7, a coupler 8 is installed at the outer end of a transmission shaft head 4, the transmission shaft head 4 of a rotating breast roll and a shaking device 9 swinging axially at a high speed are connected together through a shaking output shaft 91, a conventional coupler 8 transmits rotating power to the roll to drive the roll to rotate, the breast roll with the shaking device 9 is different from the conventional roll, the rotation of the breast roll is driven by a forming net sleeved on the surface of a breast roll roller 1, the shaking output shaft 91 of the shaking device 9 does not rotate and only moves axially and rapidly, the moving stroke is generally 0-25mm, the moving frequency is generally 100 plus 800Hz, the coupler 8 of the application is a special coupler 8, the function of the device is that the shaking device 9 generates high-speed axial movement, and the axial movement is transmitted to the transmission shaft head 4 of the breast roll through the shaking output shaft 91, so that the breast roll rapidly swings along the axial direction, and the normal rotation of the breast roll shaft head is ensured.

The coupler 8 comprises a bearing chamber 81, one end of the bearing chamber 81 is closed and is connected with one end of the shaking output shaft 91, the other end of the bearing chamber is open, the outer end part of the transmission shaft head 4 is installed in the bearing chamber 81 and is sealed by a coupler oil seal 83 to prevent oil leakage, and two tapered roller bearings 82 are arranged between the transmission shaft head 4 and the bearing chamber 81.

The bearing chamber 81 of the coupler 8 is connected with a shake output shaft 91 of the shake device 9, and axial high-speed swing motion of shake is transmitted to the transmission shaft head 4 of the breast roll through the two tapered roller bearings 82, so that the breast roll rotates and swings at high speed along the axial direction. The bearing chamber 81 of the coupling 8 and the shake output shaft 91 oscillate only axially at high speed and do not rotate.

Referring to fig. 8 and 9, the breast roll comprises a roll barrel 1, the roll barrel 1 is made of carbon fiber, a coating layer 5 is arranged outside the roll barrel 1, the coating layer 5 can be coated rubber or polyurethane, two plugs 2 are respectively arranged at two ends in the roll barrel 1, each plug 2 is formed by welding an outer barrel 21, three annular plates 22, a roll end inner barrel 23, an inner barrel 24 and a plurality of rib plates 25 or integrally casting, the three annular plates 22 are respectively an outer annular plate, a middle annular plate and an inner annular plate according to the positions, wherein the middle annular plate is connected with the inner barrel 24, the outer annular plate is connected with the roll end inner barrel 23, the outer diameter of the outer barrel 21 is in interference fit with the inner diameter of the roll barrel 1, the plug 2 is frozen to reduce the outer diameter during assembly, then the plug is pressed into holes at two ends of the roll barrel 1, the outer diameter expands when the temperature of the plug 2 is raised to room temperature in interference fit with the inner diameter of the roll barrel 1, the inner diameter is tightly tightened with the two ends of the roll barrel 1, and finally holes are formed in fit with the plug 2, and a safety pin 26 is arranged, and a plurality of rib plates 25 are uniformly distributed among the outer cylinder 21, the inner sleeve 24 and the roller end inner cylinder 23 of the choke plug 2.

Taking the transmission shaft head 4 as an example, the transmission shaft head 4 is arranged in the choke plug 2, the innermost end of the transmission shaft head 4 inserted into the roller is provided with a shaft head flange 42, the shaft head flange 42 can be matched with the end part of the inner sleeve 24 connected with the middle annular plate, screw holes are respectively arranged at the positions of the shaft head flange 42 corresponding to the end part of the inner sleeve 24, and the shaft head flange 42 can be fixed on the end surface of the inner sleeve 24 through bolts; the inner diameter of the roller end inner cylinder 23 is more than or equal to the outer diameter of the shaft head flange 42 so as to facilitate the replacement of the shaft head; a pin column, namely a tail end 43 of the shaft head, is arranged outside the flange plate 42 of the shaft head, and the inner diameter of the inner sleeve 24 is matched with the outer diameter of the tail end 43 of the shaft head, so that the tail end 43 of the shaft head can be sleeved in the inner sleeve 24; the second section 41 of the shaft head inner end of the shaft head in the transmission shaft head 4 is provided with the tensioning sleeve 3, when the shaft head flange 42 is fixed on the end surface of the inner sleeve 24 through a bolt, the position of the tensioning sleeve 3 is positioned between the roller end inner cylinder 23 and the second section 41 of the shaft head inner end, and the tensioning sleeve 3 can be fixed on the second section 41 of the shaft head inner end or can be used as an independent mounting component; the outer end of the transmission shaft head 4 is the same as the prior art, and is provided with a bearing, a nut, a labyrinth seal and other mounting structures.

A plurality of round, oval or long round holes 222 are uniformly distributed on the three annular plates 22 and are used for extending into a tool to tighten or loosen bolts inside and can also be used for observing the condition in the roller.

The baffle 6 is arranged on the end surface of the roller and outside the choke plug 2, so that sundries can be prevented from entering the roller.

In the roller of this application, when wearing and tearing appear and need change in transmission spindle nose 4 or operation spindle nose 10, its change mode as follows: taking the transmission spindle head 4 as an example for explanation, unscrewing the screw of the tensioning sleeve 3, shrinking the inner diameter and the outer diameter of the tensioning sleeve 3, ensuring that the tensioning sleeve 3 is not in interference fit with the transmission spindle head 4 and the bulkhead 2 any more, and then unscrewing the fixing bolt on the spindle head flange 42, so that the transmission spindle head 4 can be easily taken out of the bulkhead 2; during installation, the transmission shaft head 4 is arranged in the bulkhead 2, the shaft head flange 42 is fixed on the end surface of the inner sleeve 24 through a bolt, the screw of the tensioning sleeve 3 is tightened, the inner diameter and the outer diameter of the tensioning sleeve 3 are simultaneously tensioned, the gap between the roller end inner cylinder 23 and the second section 41 of the inner end of the shaft head is eliminated, and the transmission shaft head 4 and the bulkhead 2 are tensioned.

The application has the advantages that:

the bearing device 7 is fixed on a breast roll supporting seat, the breast roll is supported in a bearing seat 71 through a special bearing 72 capable of moving axially, can rotate and axially swing, has no wearing parts with short service life, and can ensure the smooth operation of the paper machine.

The coupler 8 adopts a double-tapered roller bearing 82 structure, so that axial swing motion is transmitted, and the breast roll can be ensured to rotate easily.

The roller 1 is made of carbon fiber, the weight is light, the inertia is small, the power of the shaking device 9 can be reduced, the energy is saved, breast rollers with the same specification are adopted, compared with the roller 1 made of steel, the roller 1 made of carbon fiber is reduced by 50-70% in weight, and the energy consumption of the shaking device 9 is reduced by more than 60%.

Interference fit assembly is avoided by using the tensioning sleeve 3. Due to the use of the tensioning sleeve 3, the shaft head can be in clearance fit with the inner hole of the choke plug 2 when being matched, the shaft head can be installed in the choke plug 2 without heating, and then the screw of the tensioning sleeve 3 is screwed up to ensure that the inner diameter and the outer diameter of the tensioning sleeve 3 are simultaneously tensioned, the clearance between the shaft head and the hole is eliminated, and the shaft head and the hole are tensioned. When the shaft is disassembled, only the 3 screws of the tensioning sleeve are required to be unscrewed, the inner diameter and the outer diameter of the tensioning sleeve 3 can be contracted, the shaft can be easily taken out from the 2 holes of the choke plug, and the shaft has the main advantages that: because the installation does not need heating, can not damage roller 1 and the cladding 5 of outside of carbon fiber material.

The innermost end of the shaft head inserted into the roller is provided with a shaft head flange 42 which is connected with the inner sleeve 24 of the choke plug 2 through bolts, so that the shaft head can bear larger axial tension transmitted by shaking.

The foregoing is only a preferred embodiment of the present application and it should be noted that, for a person skilled in the art, several changes and modifications can be made without departing from the overall concept of the present application, which should also be considered as the protection scope of the present application.

Claims (2)

1. The utility model provides a carbon fiber breast roll assembly for shaking, includes the breast roll, the breast roll both ends respectively set up the spindle nose, and the spindle nose sets up bearing device, its characterized in that: the bearing in the bearing device is a special bearing, the special bearing comprises a bearing outer ring, a bearing inner ring, rollers and a retainer, the width of the bearing inner ring is 25-30mm wider than that of the bearing outer ring, the rollers are cylindrical, arc chamfers are arranged at two ends of the rollers, the retainer is arranged in the bearing outer ring, and the rollers are arranged in the retainer.

2. The carbon fiber breast roll assembly for shaking of claim 1, wherein: the shaft heads are respectively an operation shaft head and a transmission shaft head, the end part of the transmission shaft head is provided with a coupling, the coupling comprises a bearing chamber, the end part of the transmission shaft head is arranged in the bearing chamber, and two tapered roller bearings are arranged between the end part of the transmission shaft head and the bearing chamber.

Images