CN208390664U - A kind of novel bushing backing roll - Google Patents
A kind of novel bushing backing roll Download PDFInfo
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- CN208390664U CN208390664U CN201820832953.8U CN201820832953U CN208390664U CN 208390664 U CN208390664 U CN 208390664U CN 201820832953 U CN201820832953 U CN 201820832953U CN 208390664 U CN208390664 U CN 208390664U
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Abstract
The utility model discloses a kind of novel bushing backing rolls, it includes bearing roller body, roller set, and roller set covers on the body of roll among bearing roller body, the body of roll, roller set are divided into three sections of left, center, right, the nominal diameter of body of roll interlude is D1, and the inner hole nominal diameter that roller covers interlude is D2, D1=D2；Left section of the body of roll is stopping table, and the length of stopping table is L1:50-100mm, and diameter D1 ' is 6mm bigger than barrel diameter D1；Left section of roller set is stopping table, and the length of stopping table is L1 ': 50-100mm, and diameter D2 ' is 3mm bigger than roller set diameter D2；The stopping table position that the stopping table and roller that left section of the body of roll cover left section is corresponding, and size (length and diameter) is identical；Roller covers inner hole and the interference hot charging of body of roll outer circle.The bushing backing roll of the utility model can prevent from generating axial float phenomenon between the body of roll and roller set.Meanwhile it will not be generated between the body of roll and the roller set of the utility model backing roll and circumferentially rotate phenomenon.
Description
Technical field
The utility model relates to a kind of improvement of bushing backing roll design structure and elastic conjunction, are suitable for all bushing branch
The manufacture and reparation of runner (forging).
Background technique
Backing roll is part important in milling train, while being also the bigger spare part class product of market demand amount.In mesh
On preceding steel industry production line, it is monoblock type and two kinds of bushing formula that bearing Kun, which be divided to, wherein every solid forging backing roll takes
Between 50~2,000,000, and the expense of every bushing backing roll is only the 60~70% of solid forging backing roll.Meanwhile it inlaying
Cover backing roll with whole backing roll under the premise of service performance is identical, have set can be gone to reset, body of roll ontology reuses
Advantage, i.e., bushing backing roll is more convenient for repairing than whole backing roll, and material cost, rehabilitation cost are far below conventional whole branch
Runner, therefore, the application range of bushing bearing Kun and space are quite extensive.
After existing routine bushing backing roll operation a period of time, scene often will appear roller set cracking, the body of roll and roller set and generate
Circumferentially rotate, the influences production such as axial float the phenomenon that, there is also roller set size it is heated after axially-extending phenomenon, and heated prolong
It is long extend to certain size it is too long after, roller set is easy to interfere, rubs with associated part (end face bearing etc.), to damage
Hurt bad associated part influences production and is normally carried out.Therefore, the use quality of existing bushing backing roll is low, service life is short.
Utility model content
The problem to be solved by the utility model is to provide a kind of novel bushing backing rolls, it can prevent the body of roll and roller
Axial float phenomenon is generated between set.Meanwhile it will not generate and circumferentially rotate between the body of roll and the roller set of the utility model backing roll
Phenomenon.In addition, the utility model back-up roll sleeve will not cracking, it is existing will not to there is the heated rear axially-extending of roller set size
As.Therefore, the service life of the bushing backing roll of the utility model extends, and uses quality height.
A kind of novel bushing backing roll of the utility model, it includes bearing roller body, roller set, and roller set is covered in backing roll sheet
On the body of roll among body, the body of roll, roller set are divided into three sections of left, center, right, and the nominal diameter of body of roll interlude is D1, and roller covers interlude
Inner hole nominal diameter be D2, D1=D2；Left section of the body of roll is stopping table, and the length of stopping table is L1:50-100mm, diameter
D1 ' is 6mm bigger than barrel diameter D1；Left section of roller set is stopping table, and the length of stopping table is L1 ': 50-100mm, diameter D2 ' ratio
Roller covers the big 3mm of diameter D2；The stopping table position that the stopping table and roller that left section of the body of roll cover left section is corresponding, size (length and diameter)
It is identical；The roller set inner hole and the interference hot charging of body of roll outer circle.
Further, right section of the body of roll is step surface, and the length of step surface is L2:50mm, and diameter D1 is " than barrel diameter D1
Big 1mm passes through the chamfered transition of 1:10 between step surface and body of roll interlude 101；Right section of roller set is step surface, step surface
Length L2 ' are as follows: 50mm, diameter D2 " are 1mm bigger than roller set diameter D2, pass through the inclined-plane of 1:10 between step surface and roller set interlude
Transition.
Further, right section of the body of roll of step surface and roller cover right section step surface position it is corresponding, size (length and half
Diameter) it is identical；The intermediate incline position of the two is corresponding, and size is identical.
Further, the length of body of roll interlude is L, and the length that roller covers interlude is L ', L '=L- 0.2mm.
Further, between roller set and the interlude of both bodies of roll, between right section of step surface and between intermediate incline
Cooperation is interference fit.
Further, the magnitude of interference of interference fit is 0.7-1.3mm.
Further, locking dose is coated between roller set inner hole and body of roll outer circle.
The bushing backing roll of the utility model is technically characterized by comprising the steps as follows: (one), the improvement of body of roll outer circle two-end structure pattern, roller set
The improvement of inner hole two-end structure pattern separately designs processing one seam allowance, one at the body of roll outer circle both ends of existing backing roll
Step, it can both prevent from generating axial float phenomenon between the body of roll and roller set, but also the two is easy to assembly；(2), roller set
It is interference fit between the body of roll, dedicated locking dose of use when assembling in addition increases the frictional force between the body of roll and roller set,
It prevents from generating between roller set and the body of roll and circumferentially rotate.In short, the bushing backing roll of the utility model is avoided by the improvement in structure
Or the generation of bad phenomenon is reduced, extend workpiece service life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that roller body is supported in the utility model backing roll；
Fig. 2 is the enlarged diagram in Fig. 1 at A；
Fig. 3 is the enlarged diagram in Fig. 1 at B；
Fig. 4 is the structural schematic diagram of the utility model backing roll central roll set；
Fig. 5 is the enlarged diagram in Fig. 4 at E；
Fig. 6 is the enlarged diagram in Fig. 4 at F.
Specific embodiment
Embodiment 1
A kind of novel bushing backing roll of the utility model, it includes bearing roller body 1, roller set 2, and roller covers 2 sets and supporting
On the body of roll among roller body 1, the body of roll, roller set are divided into three sections of left, center, right, and the nominal diameter of body of roll interlude 101 is D1, roller
The inner hole nominal diameter for covering interlude 201 is D2, D1=D2；Left section 102 of the body of roll is stopping table, and the length of stopping table is L1:
50-100mm, diameter D1 ' are 6mm bigger than barrel diameter D1；Left section 202 of roller set is stopping table, and the length of stopping table is L1 ':
50-100mm, diameter D2 ' are 3mm bigger than roller set diameter D2；The stopping table position that the stopping table and roller that left section of the body of roll cover left section is opposite
It answers, size (length and diameter) is identical；Roller covers inner hole and the interference hot charging of body of roll outer circle.
The setting of both the body of roll and roller set stopping table, so that axial restraint after the two assembly, so that effectively control used
Play to axial is generated between journey central roll set and the body of roll.Wherein, the length of stopping table is related with barrel diameter, the diameter of the body of roll
Bigger, the length of stopping table is longer.
Embodiment 2
In the utility model backing roll: right section 103 of the body of roll is step surface, and the length of step surface is L2:50mm, diameter
D1 " is 1mm bigger than barrel diameter D1, passes through the chamfered transition of 1:10 between step surface and body of roll interlude 101；Right section of roller set
203 be step surface, the length L2 ' of step surface are as follows: 50mm, diameter D2 " are 1mm bigger than roller set diameter D2, and step surface and roller set are intermediate
Pass through the chamfered transition of 1:10 between section 201.
Wherein, right section of the body of roll of step surface and roller cover right section step surface position it is corresponding, size (length and diameter) phase
Together；The intermediate incline position of the two is corresponding, and size is identical.
When roller set is with body of roll hot charging, the stopping table at top is first leaned on sternly, after the contact of incline plane of bottom, due to that can slide,
It axially can also play；With axial shrinkage, roller set is more bonded closely with the body of roll, will not there are gaps.Roller set and body of roll hot charging
After be bonded closer, service performance is better, and the workpiece service life is longer.
The setting of both the body of roll and roller set step surface and its intermediate incline, so that the two is both convenient for determining assembly side when assembling
To, progress further convenient for assembly, while can also play the role of preventing axial float.Wherein, the length of step surface with
Barrel diameter is related, and the diameter of the body of roll is bigger, and the length of step surface is longer；The length of intermediate incline is related with barrel diameter,
The diameter of the body of roll is bigger, and the length of intermediate incline is longer.
The utility model is improved by the structure to the body of roll and roller set, in the workload and difficulty of processing of manufacture processing
Under the premise of increased, the play to axial of the body of roll and roller set is efficiently controlled, the dress of roller set and the body of roll is facilitated
Match.
Embodiment 3
In the utility model backing roll: the length of body of roll interlude 101 is L, and the length that roller covers interlude 201 is L ', L '
=L-0.2mm.
It interferes, the length of the two interlude is controlled, to make when being assembled in order to avoid roller set with the body of roll
Assemble more convenient and quicker.
Embodiment 4
In the utility model backing roll: between roller set and the interlude of both bodies of roll, between right section of step surface and transition
Cooperation between inclined-plane is interference fit.
Using interference fit between the utility model central roll set and the body of roll, increase between the bushing backing roll body of roll and roller set
Frictional force is generated and is circumferentially rotated using between the body of roll in operation and roller set to be effectively prevented from bushing backing roll.
Embodiment 5
The magnitude of interference of interference fit between roller set and the body of roll is 0.7-1.3mm.
Although being interference fit between existing roller set and the body of roll, since magnitude of interference is bigger than normal, during space
It is easy to appear roller set cracking phenomena；It is axial with the body of roll using roller set is easy to appear in operational process but if magnitude of interference is less than normal
Play and phenomenon is circumferentially rotated, can not work normally.Therefore, roller set currently on the market can be replaced frequently.Due to magnitude of interference
Size does not have formula law, and field working conditions are also different, and especially when roller set is in running order, temperature is higher than the body of roll, this
Magnitude of interference is difficult to determine, we have determined that most reasonable magnitude of interference, that is, the magnitude of interference being interference fitted are preferred after groping many times
For 0.7-1.3mm, the magnitude of interference of this range can both reduce crackle generation, while also prevent mutual between roller set and the body of roll
Rotation.
Embodiment 6
Locking dose is coated between roller set inner hole and body of roll outer circle.
It generates and circumferentially rotates to be effectively prevented from bushing backing roll using between operation central roll set and the body of roll, in addition to roller set
It is outer using interference fit between the body of roll, locking dose is added when roller set is assembled with the body of roll, to increase the bushing backing roll body of roll
With the frictional force between roller set.
The improvement of the utility model are as follows: the improvement of body of roll outer circle two-end structure pattern, roller cover inner hole two-end structure pattern
Improvement, dedicated locking dose is used when assembly.We to bushing backing roll carry out structure on improvement, to avoid or reduce it is existing
The generation of product bad phenomenon extends workpiece service life, improves and uses quality.
In addition, roller set can select coefficient of friction to get in order to further avoid circumferentially rotating between roller set and the body of roll
Big material, magnitude of interference can select smaller numerical value relatively；The phenomenon that in order to reduce roller set cracking, roller set can select thermal expansion ratio
Lower material.Meanwhile to improve the processing of bushing backing roll, assembling quality, in the body of roll, roller set mechanical processing process, with
On the basis of installation diagram axial direction one end, manufacture and design a pair of of profile measurement template, carries out body of roll ontology and roller set cooperation inclined-plane respectively
It is detected after the machining of position, the consistency axially engaged with body of roll ontology and roller set after guarantee assembly.
The manufacture of the bushing backing roll of the utility model, assembling quality all improve a new step, and service performance is more
Stablize, be reliable, substantially increasing use the service life of bushing backing roll and using quality, thus with bigger economic benefit,
Broader market prospects.The utility model will save a large amount of manufactures and maintenance fund for steel industry, and have and continue
Property, great amount of cost is saved every year.
Claims (7)
1. a kind of novel bushing backing roll, it includes bearing roller body (1), roller set (2), it is characterized in that: roller set (2) is covered and propped up
On the intermediate body of roll of runner ontology (1), the body of roll, roller set are divided into three sections of left, center, right, and the nominal diameter of body of roll interlude (101) is
D1, the inner hole nominal diameter that roller covers interlude (201) is D2, D1=D2；Left section (102) of the body of roll are stopping table, stopping table
Length is L1:50-100mm, and diameter D1 ' is 6mm bigger than barrel diameter D1；Left section (202) of roller set are stopping table, the length of stopping table
Degree is L1 ': 50-100mm, and diameter D2 ' is 3mm bigger than roller set diameter D2；The stopping table and roller that left section of the body of roll cover left section of stopping table
Position is corresponding, and the size of length is identical, and the size of diameter is identical；Roller covers inner hole and the interference hot charging of body of roll outer circle.
2. bushing backing roll according to claim 1, it is characterized in that: right section (103) of the body of roll are step surface, step surface
Length is L2:50mm, and diameter D1 " is 1mm bigger than barrel diameter D1, passes through 1:10's between step surface and body of roll interlude (101)
Chamfered transition；Right section (203) of roller set are step surface, the length L2 ' of step surface are as follows: 50mm, diameter D2 " are bigger than roller set diameter D2
1mm passes through the chamfered transition of 1:10 between step surface and roller set interlude (201).
3. bushing backing roll according to claim 2, it is characterized in that: right section of the body of roll of step surface and roller cover right section of step
Face position is corresponding, and the size of length is identical, and the size of radius is identical；The intermediate incline position of the two is corresponding, and size is identical.
4. bushing backing roll according to claim 1, it is characterized in that: the length of body of roll interlude (101) is L, in roller set
Between section (201) length be L ', L '=L-0.2mm.
5. bushing backing roll according to claim 2 or 3, it is characterized in that: between the interlude of both roller set and body of roll, it is right
Cooperation between section step surface and between intermediate incline is interference fit.
6. bushing backing roll according to claim 5, it is characterized in that: the magnitude of interference of interference fit is 0.7-1.3mm.
7. bushing backing roll according to claim 1, it is characterized in that: being coated between roller set inner hole and body of roll outer circle locking
Agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820832953.8U CN208390664U (en) | 2018-05-31 | 2018-05-31 | A kind of novel bushing backing roll |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820832953.8U CN208390664U (en) | 2018-05-31 | 2018-05-31 | A kind of novel bushing backing roll |
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| Publication Number | Publication Date |
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| CN208390664U true CN208390664U (en) | 2019-01-18 |
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| CN201820832953.8U Active CN208390664U (en) | 2018-05-31 | 2018-05-31 | A kind of novel bushing backing roll |
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| CN (1) | CN208390664U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108704941A (en) * | 2018-05-31 | 2018-10-26 | 泰尔重工股份有限公司 | A kind of novel bushing backing roll |
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2018
- 2018-05-31 CN CN201820832953.8U patent/CN208390664U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108704941A (en) * | 2018-05-31 | 2018-10-26 | 泰尔重工股份有限公司 | A kind of novel bushing backing roll |
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