CN100506410C

CN100506410C - High hardness fracture-proof type roll able to quickly change its surface

Info

Publication number: CN100506410C
Application number: CNB2006100471630A
Authority: CN
Inventors: 初尔玉; 初显仁
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-07-05
Filing date: 2006-07-05
Publication date: 2009-07-01
Anticipated expiration: 2026-07-05
Also published as: CN1903462A

Abstract

An antibreaking high-hardness rolling roller with fast exchanged surface layer is composed of a hollow roller core made of steel and with uniform screw holes, an antiwear high-strength surface layer sleeving on said roller core, and several supporting screws passing through said screw holes for uniformly supporting the inner surface of said surface layer.

Description

Change the anti-breaking roll of high rigidity of roll surface fast

Technical field

The present invention relates to the roll device field, the anti-breaking roll of particularly a kind of high rigidity of quick replacing roll surface.

Background technology

At present, replace the composite roll of traditional roll mainly to adopt following dual mode, the one, adopt modes such as cast, built-up welding to be formed with certain thickness high-abrasive material on the roll body surface, this method is relatively harsher to the selection of material, make the thermal coefficient of expansion of mother metal and working lining approaching, the surface metal strong adhesion, and in the coordination of steps such as alloy treatment, fusing degree, the duration of pouring, certain degree of difficulty is arranged all, careless slightly, will cause waste product, therefore use few; The 2nd, roll body adopts shock resistance, bending resistance cast steel material preferably, and working lining utilizes the antifriction metal (AFM) roller shell, both are assembled by hot charging or hydraulic pressure, form a composite (back-up) roll, this roll service life and effect are better, but higher to the fit tolerance between roller shell and the roll body, requirement on machining accuracy, the magnitude of interference is big, in use is subjected to external impacts and easily vertically splits; Temperature raises because roll surface rolls mill easily and the magnitude of interference is little in use, and generation is expanded and skidded with core, can't be normally rolling, after this roll uses and scraps, be difficult to the good roll surface of faying face is separated with roll body, and dismounting is all more time-consuming.In addition, traditional roll is the solid cast roll, and this solid roller is on using and making, there are a lot of shortcomings, for example, along with the roll barrel surface strength improves, core fragility is also more and more higher, makes roll be easy to fracture, scrap, and reduce service life greatly.

Summary of the invention

The purpose of this invention is to provide a kind of internal layer for having good strength and rigidity, repeatedly used roller core, the outer high strength roll surface that adopts with excellent wear, simple to operate, easy accessibility, the anti-breaking roll of high rigidity of the quick replacing roll surface of long service life.

The objective of the invention is to realize by following technical proposals.

According to the anti-breaking roll of the high rigidity of quick replacing roll surface of the present invention, comprise roller core, be positioned at the roll neck of roller core both ends of the surface and be sleeved on the high strength roll surface that the roller core outside has excellent wear, it is characterized in that described roller core is the hollow roller core of steel, on hollow roller core, evenly have screwed hole alternately, the screwed hole that jackscrew passes on the roller core withstands on the inwall of roll surface, and roll surface and roller core are become one.

Evenly have groove on the roll surface inwall alternately, the groove quantity on its roll surface inwall is corresponding with the screwed hole on the roller core.

The two ends of described roll surface have groove, and the profile of tooth spacer is installed in the groove of roll surface termination, and are fixed on the end face of roller core with bolt.

The groove at the two ends of described roll surface is polygon, triangle or semicircle, and the groove at the number of teeth of profile of tooth spacer and shape and roll surface two ends is complementary.

Screwed hole on the described hollow roller core becomes vertical or the angle of inclination with the roll surface inwall.

Described roll neck has externally threaded cylindrical roll neck for the roll neck or the front end of band boss.

Have internal thread at described roller core inwall two ends.

Advantage of the present invention is: owing to adopted technique scheme, suit has the high strength roll surface of excellent wear outside roller core, when roll surface wearing is scrapped, need only change roll surface, and roller core is reusable, does not need to scrap whole roll; Simultaneously owing to have screwed hole on roller core, it is fastening to be convenient to jackscrew, makes roll surface inwall multiple spot evenly stressed, and two ends fix by profile of tooth spacer and bolt, and roller core and roll surface are formed as one.Therefore dismounting is very convenient, has reduced cost effectively, has prolonged the service life of roll.

Description of drawings

Fig. 1 is the structural representation of roll of the present invention.

Fig. 2 is the A-A cutaway view of Fig. 1.

Fig. 3 is the schematic diagram of a kind of embodiment of flute profile spacer.

Fig. 4 is the structural representation that cylindrical roll neck is connected with roller core.

The specific embodiment

Below in conjunction with description of drawings the specific embodiment of the present invention.

As Fig. 1, shown in Figure 2, the anti-breaking roll of the high rigidity of quick replacing roll surface of the present invention, comprise roller core 3, be positioned at the roll neck 1 of roller core 3 both ends of the surface and be sleeved on the high strength roll surface 2 that roller core 3 outsides have excellent wear, it is characterized in that described roller core 3 is the hollow roller core of steel, on hollow roller core, evenly have screwed hole alternately, the screwed hole that jackscrew 4 passes on the roller core 3 withstands on the inwall of roll surface 2, roll surface 2 and roller core 3 are become one, the present invention also can evenly have groove alternately on roll surface 2 inwalls, the groove quantity on its its roll surface inwall is corresponding with the screwed hole on the roller core 3; Screwed hole on the described hollow roller core 3 becomes vertical or the angle of inclination with roll surface 2 inwalls, and accompanying drawing 1 of the present invention shows the embodiment of the screwed hole that adopts the band inclination angle, and is so when mounted, very convenient when twisting jackscrew from the roller core both sides; Owing to have groove equably at roll surface 2 inwalls, jackscrew 4 just in time withstands in the groove of roll surface 2 inwalls, makes roll surface 2 inwall multiple spots stressed, can not skid between roller core 3 and the roll surface 2, is combined into one securely in addition.

In order to make roll surface 2 and roller core 3 axially, radially can both fixedly positioning, the present invention also has groove at the two ends of described roll surface 2, profile of tooth spacer 6 is installed in the groove of roll surface 2 terminations, and be fixed on the end face of roller core 3 with bolt 5, the groove that open at the two ends of described roll surface 2, be polygon, triangle or semicircle, the groove at the number of teeth of profile of tooth spacer 6 and shape and roll surface 2 two ends is complementary, referring to accompanying drawing 3.

Because the present invention is combination assembling, so each parts can make separately, and processing is simple, convenient disassembly.

Roll neck 1 of the present invention can adopt the roll neck or the front end of band boss to have externally threaded cylindrical roll neck, and Fig. 1 has provided the embodiment of roll neck 1 for band boss roll neck.When adopting front end to have externally threaded cylindrical roll neck, its roller core 3 inwall two ends should have internal thread, during installation front end are had externally threaded cylindrical roll neck 1 and are screwedly mounted on the internal thread of opening at roller core 3 inwall two ends and can form the combination roller core.Get rid of for preventing that bolt 5 from withdrawing from, can locking nut 7 be installed in the outside of profile of tooth spacer 6, referring to Fig. 4.

Installation can be screwed in jackscrew earlier in the screwed hole of roller core when unloading roll of the present invention, jackscrew is screwed in the recessing of roll surface inwall institute again, and both are combined securely; As long as jackscrew is unscrewed, can conveniently unload lower roll surface during dismounting.

Claims

1, the anti-breaking roll of a kind of high rigidity of quick replacing roll surface, comprise roller core, be positioned at the roll neck of roller core both ends of the surface and be sleeved on the high strength roll surface that the roller core outside has excellent wear, it is characterized in that described roller core is the hollow roller core of steel, on hollow roller core, evenly have screwed hole alternately, the screwed hole that jackscrew passes on the roller core withstands on the inwall of roll surface, and roll surface and roller core are become one.

2, the anti-breaking roll of the high rigidity of quick replacing roll surface according to claim 1 is characterized in that evenly having groove alternately on the roll surface inwall, and the groove quantity on its roll surface inwall is corresponding with the screwed hole on the roller core.

3, the anti-breaking roll of the high rigidity of quick replacing roll surface according to claim 1 is characterized in that the two ends of described roll surface have groove, and the profile of tooth spacer is installed in the groove of roll surface termination, and is fixed on the end face of roller core with bolt.

4, the anti-breaking roll of the high rigidity of quick replacing roll surface according to claim 3, the groove that it is characterized in that the two ends of described roll surface is polygon or semicircle, the groove at the number of teeth of profile of tooth spacer and shape and roll surface two ends is complementary.

5, the anti-breaking roll of the high rigidity of quick replacing roll surface according to claim 3, the groove that it is characterized in that the two ends of described roll surface is a triangle, the groove at the number of teeth of profile of tooth spacer and shape and roll surface two ends is complementary.

6, the anti-breaking roll of the high rigidity of quick replacing roll surface according to claim 1 is characterized in that the screwed hole on the described hollow roller core becomes vertical or the angle of inclination with the roll surface inwall.

7, the anti-breaking roll of the high rigidity of quick replacing roll surface according to claim 1 is characterized in that having internal thread at described roller core inwall two ends.