CN202667251U - Composite hard alloy roll - Google Patents
Composite hard alloy roll Download PDFInfo
- Publication number
- CN202667251U CN202667251U CN 201220403046 CN201220403046U CN202667251U CN 202667251 U CN202667251 U CN 202667251U CN 201220403046 CN201220403046 CN 201220403046 CN 201220403046 U CN201220403046 U CN 201220403046U CN 202667251 U CN202667251 U CN 202667251U
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- Prior art keywords
- roll
- alloy
- composite hard
- alloy roll
- hydraulic nut
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Abstract
The utility model discloses a composite hard alloy roll which comprises a roll shaft, wherein at least two alloy roll rings are arranged on the roll shaft; a spacer ring is arranged between every two adjacent alloy roll rings; a step for stopping the alloy roll rings is arranged at one end of the roll shaft; a hydraulic nut is arranged at the other end of the roll shaft; the end face of a compression ring of the hydraulic nut pushes against the end face of the closest alloy roll ring; and a locking device for pushing against the alloy roll rings continuously after pressure of the hydraulic nut is withdrawn is arranged on the compression ring in a sleeving manner. The composite hard alloy roll has the advantages that when the composite hard alloy roll is fixed, air pressure acts on the hydraulic nut for compressing the alloy roll rings; then a locking washer is adopted to fix a relative position; the composite hard alloy roll is simple in structure, time-saving and labor-saving in operation and good in fixing effect; and the service lives of the alloy roll rings are prolonged.
Description
Technical field
The utility model relates to a kind of composite hard alloy roll.
Background technology
Roll is wanted the consumption in operation part as rolling mill main, and product quality, production efficiency etc. is all had direct impact.The advantages such as single groove steel transportation amount is high because having for hard alloy roll, negative common difference precise control, product surface quality are good, having become wire rod rolls face, especially high-speed rod-rolling mill finish rolling, pre-finish rolling, in the main roll material that rolls.
The every reconditioning of hard alloy combined type mill roll once, single groove steel transportation amount reaches more than 800 ~ 1200 tons, is 10 times of nodular cast iron roller.And hard alloy composite roll can increase the reconditioning number of times, and collars axle etc. can be repeatedly used.The benefit advantage is very outstanding, and the steel surface smoothness that shuts out is good.
Present composite ring all adopts the alloy collars is bonded on the roll shaft, but in the Practical manufacturing process, bonding unstable problem easily appears, thereby affect the quality of product, and this mode is also inapplicable to the composite roll that adopts two joints and above alloy collars, adopts simultaneously the mode of welding also can't operate between two joint collars.
How fixing the alloy collars is present subject matter, and we designed the mode of utilizing alloy collars and roll shaft interference fit, but the alloy collars easily ftractures; Also designed and utilized the big nut location, withstood again the mode alloy collars location of alloy collars with a plurality of primary nuts, relatively wasted time and energy but will tighten one by one these primary nuts in the practical operation.
The utility model content
The purpose of this utility model is to provide a kind of composite hard alloy roll, can effectively solve existing alloy collars fixing difficult, the problem of complex steps.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions: a kind of composite hard alloy roll, comprise roll shaft, described roll shaft is provided with at least two joint alloy collars, be provided with spacer ring between the described adjacent alloy collars, one end of described roll shaft is provided with the step that blocks the alloy collars, the other end of described roll shaft is provided with hydraulic nut, the hold-down ring end face of described hydraulic nut withstands on the nearest alloy collars end face, is arranged with the locking device that continues to hold out against the alloy collars after hydraulic nut pressure removes on the described hold-down ring.
Preferably, described locking device is the lock washer of two opposite face band sawtooth, and described lock washer has at least three screwed holes radially, is provided with bolt in the described screwed hole; With two toothed lock washers, can ensure suitable contact-making surface fixedly the time again, can not be out of shape because pressure is excessive.
Preferably, the external diameter of described hydraulic nut is less than the external diameter of alloy collars; Roll in the course of the work locking nut can not get loose.
Preferably, the external diameter of described locking device is less than the external diameter of alloy collars; Do not affect the work of alloy collars, improve spacer ring service life.
Compared with prior art, the utility model has the advantages that: this device utilizes fixedly the time air pressure that the hydraulic nut effect is compressed the alloy collars, again with the fixing relative position of lock washer, simple in structure, it is time saving and energy saving to operate, and good fixing effect prolongs alloy collars service life.
Description of drawings
Fig. 1 is the structural representation of a kind of composite hard alloy roll of the utility model.
The specific embodiment
Consult the embodiment that Fig. 1 is a kind of composite hard alloy roll of the utility model, a kind of composite hard alloy roll, comprise roll shaft 1, described roll shaft 1 is provided with at least two joint alloy collars 2, be provided with spacer ring 3 between the described adjacent alloy collars 2, one end of described roll shaft 1 is provided with the step 5 that blocks alloy collars 2, the other end of described roll shaft 1 is provided with hydraulic nut 4, hold-down ring 9 end faces of described hydraulic nut 4 withstand on nearest alloy collars 2 end faces, be arranged with the locking device 6 that after hydraulic nut 4 pressure remove, continues to hold out against alloy collars 2 on the described hold-down ring 9, described locking device 6 is the lock washer of two opposite face band sawtooth, described lock washer has at least three screwed holes 7 radially, be provided with bolt 8 in the described screwed hole 7, the external diameter of described hydraulic nut 4 is less than the external diameter of alloy collars 2, and the external diameter of described locking device 6 is less than the external diameter of alloy collars 2.
With being enclosed within on the roll shaft 1 of alloy collars 2 and spacer ring 3 intervals, then the hydraulic nut 4 of screwing on inflating in the oilhole of air pump to hydraulic pressure nut 4, ejects hold-down ring 9, alloy collars 2 is compressed, regulate two lock washers and move in the other direction, utilize the tooth of two lock washers to eliminate the gap, make a lock washer withstand alloy collars 2, another lock washer withstands hydraulic nut 4, adjusting bolt is fixed the position of two lock washers again, then removes air pump, finishes the fixing of alloy collars 2.This device utilizes air pressure fixedly the time, and 4 effects compress alloy collars 2 to hydraulic nut, and with the fixing relative position of lock washer, simple in structure, it is time saving and energy saving to operate again, good fixing effect, 2 service lifes of prolongation alloy collars.
The above only is specific embodiment of the utility model, but technical characterictic of the present utility model is not limited to this, any those skilled in the art is in field of the present utility model, and the variation of doing or modification all are encompassed among the claim of the present utility model.
Claims (4)
1. composite hard alloy roll, comprise roll shaft (1), it is characterized in that: described roll shaft (1) is provided with at least two joint alloy collars (2), be provided with spacer ring (3) between the described adjacent alloy collars (2), one end of described roll shaft (1) is provided with the step (5) that blocks alloy collars (2), the other end of described roll shaft (1) is provided with hydraulic nut (4), hold-down ring (9) end face of described hydraulic nut (4) withstands on nearest alloy collars (2) end face, is arranged with the locking device (6) that continues to hold out against alloy collars (2) after hydraulic nut (4) pressure removes on the described hold-down ring (9).
2. a kind of composite hard alloy roll as claimed in claim 1, it is characterized in that: described locking device (6) is the lock washer of two opposite face band sawtooth, described lock washer has at least three screwed holes (7) radially, is provided with bolt (8) in the described screwed hole (7).
3. a kind of composite hard alloy roll as claimed in claim 1 or 2, it is characterized in that: the external diameter of described hydraulic nut (4) is less than the external diameter of alloy collars (2).
4. a kind of composite hard alloy roll as claimed in claim 2, it is characterized in that: the external diameter of described locking device (6) is less than the external diameter of alloy collars (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220403046 CN202667251U (en) | 2012-08-15 | 2012-08-15 | Composite hard alloy roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220403046 CN202667251U (en) | 2012-08-15 | 2012-08-15 | Composite hard alloy roll |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202667251U true CN202667251U (en) | 2013-01-16 |
Family
ID=47488184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220403046 Expired - Lifetime CN202667251U (en) | 2012-08-15 | 2012-08-15 | Composite hard alloy roll |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202667251U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102847716A (en) * | 2012-08-15 | 2013-01-02 | 浙江恒成硬质合金有限公司 | Composite hard alloy roller |
-
2012
- 2012-08-15 CN CN 201220403046 patent/CN202667251U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102847716A (en) * | 2012-08-15 | 2013-01-02 | 浙江恒成硬质合金有限公司 | Composite hard alloy roller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130116 |