CN217941357U - Mechanically-locked hard alloy combined roller - Google Patents
Mechanically-locked hard alloy combined roller Download PDFInfo
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- CN217941357U CN217941357U CN202221466517.6U CN202221466517U CN217941357U CN 217941357 U CN217941357 U CN 217941357U CN 202221466517 U CN202221466517 U CN 202221466517U CN 217941357 U CN217941357 U CN 217941357U
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- steel
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- steel mandrel
- cemented carbide
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Abstract
The utility model discloses a mechanical locking carbide combination roll, including steel dabber, collars subassembly, stop collar, lock nut and gasket, collars subassembly install in the steel dabber and with steel dabber interference fit, the stop collar is located one side of collars subassembly and is carried out axial positioning with the collars subassembly, the little clearance fit of stop collar and steel dabber, the steel dabber is equipped with the shaft shoulder that is used for fixing a position the stop collar; the locking nut is arranged on one side, away from the limiting sleeve, of the roll collar assembly and is in threaded connection with the steel mandrel, a plurality of threaded counter bores are uniformly distributed in the circumferential direction of the locking nut at intervals, and the locking nut is matched with the threaded counter bores through bolts to apply axial pre-tightening force to the roll collar assembly; the limiting sleeve and the steel mandrel are fixed through a key groove and a key. The utility model provides a combination roll can realize rapid Assembly and dismantlement, satisfies used repeatedly's demand. Meanwhile, the method has the advantages of good use stability, economical production and the like.
Description
Technical Field
The utility model relates to a carbide combination roll technical field, specific mechanical locking carbide combination roll that says so can satisfy high-speed rod mill's operation requirement.
Background
The hard alloy combined roller is assembled by a hard alloy roller ring, a steel mandrel and other accessories and is mainly applied to rolling deformed steel bars, round bars, small-sized angle steels, flat steels and the like on a bar finishing mill frame. Compared with the traditional high-nickel roller, cast iron roller and high-speed steel roller, the single-groove steel passing amount can be greatly increased, the roller changing and groove changing times are reduced, the production efficiency is improved, the labor intensity of workers is reduced, and the utilization rate and the yield of the rolling mill are improved. In addition, the use of the combined roller thoroughly improves the surface quality and tolerance of the rolled piece and optimizes the quality of a finished product.
The technical difficulty of the hard alloy combined roller is that the hard alloy roller ring and the steel mandrel are assembled and locked, so that the hard alloy roller ring is prevented from loosening and slipping in the steel rolling production process. At present, three mainstream assembling and locking modes are provided, firstly, a steel mandrel is directly and centrifugally cast in a hard alloy roll collar to form metallurgical bonding, but the quality control difficulty in the casting process is high, and the steel mandrel cannot be disassembled for secondary use; secondly, a special adhesive is used for fixing the hard alloy roll collar and the steel mandrel, but the method is not suitable for working conditions of high temperature and high rolling force and has poor use stability; and thirdly, locking is performed in a mechanical mode, friction force is generated through a hydraulic locking nut to transfer rolling torque, but the hydraulic nut is high in technical requirement and complex in assembly, and meanwhile, the method needs to apply larger axial pretightening force and can influence the strength of the steel mandrel.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of carbide combination roll among the prior art, the utility model provides a mechanical locking carbide combination roll can realize rapid Assembly and dismantlement, satisfies used repeatedly's demand. Meanwhile, the method has the advantages of good use stability, economical production and the like.
In order to achieve the above object, the utility model discloses a concrete scheme does:
a mechanically locking cemented carbide composite roll comprising:
a steel mandrel;
the roll collar assembly is arranged on the steel mandrel;
the limiting sleeve is arranged on one side of the roll collar assembly to axially position the roll collar assembly, the limiting sleeve is in small clearance fit with the steel mandrel, a shaft shoulder used for positioning the limiting sleeve is arranged on the steel mandrel, and the limiting sleeve and the steel mandrel are fixed through a key groove and a key;
the locking nut is arranged on one side, away from the limiting sleeve, of the roll collar assembly and is in threaded connection with the steel mandrel, a plurality of threaded counter bores are uniformly distributed in the circumferential direction of the locking nut at intervals, and the locking nut is matched with the threaded counter bores through bolts to apply axial pre-tightening force to the roll collar assembly;
the gasket is arranged between the locking nut and the roller ring assembly to transmit axial pretightening force, and the gasket is in small clearance fit with the steel mandrel.
Further, the roller ring assembly comprises at least one hard alloy roller ring, when the number of the hard alloy roller rings is not less than two, the two adjacent hard alloy roller rings are separated by a spacer ring, the hard alloy roller rings are in interference fit with the steel mandrel, the spacer ring is in small clearance fit with the steel mandrel, and the spacer ring and the steel mandrel are fixed through a key groove and a key.
Furthermore, the material of the spacer ring is steel.
Furthermore, the gasket and the steel mandrel are fixed through a key groove and a key.
Furthermore, the inner wall of the limiting sleeve is provided with a step matched with the shaft shoulder.
Further, the number of the threaded counter bores is 12.
Has the beneficial effects that:
(1) The utility model can ensure that the hard alloy roll collar does not loose, slip and the like in the production and use process through the interference fit of the hard alloy roll collar and the steel mandrel and the pretightening force of the locking nut to the hard alloy roll collar; a plurality of threaded counter bores are uniformly distributed in the locking nut, appropriate axial pretightening force can be given by combining with actual rolling requirements, stable use of the combined roller is guaranteed, a gasket is arranged between the locking nut and the hard alloy roller ring, the gasket can protect the side face of the hard alloy roller ring from being scratched by a bolt while transmitting the axial pretightening force, and meanwhile, the gasket can also guarantee that the end face of the hard alloy roller ring is evenly stressed, so that the roller ring is prevented from being cracked due to stress concentration.
(2) The utility model provides a dismouting operation can be accomplished to the assembly process that the combination roll used conventionality, need not use hydraulic nut part, and simple structure, easy dismounting can satisfy the requirement of steel dabber manifold cycles use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a combined roll including a cemented carbide roll collar according to the present invention.
Fig. 2 is a schematic structural diagram of a combined roll including two cemented carbide roll collars according to the present invention.
The graphic symbols are: 1. the device comprises a steel mandrel, 2, bolts, 3, locking nuts, 4, gaskets, 5, a hard alloy roller ring, 6, a limiting sleeve, 7, a shaft shoulder, 8 and a spacer ring.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following specific embodiments, and it should be understood that the described embodiments are only some embodiments, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be understood that the terms "left", "right", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in fig. 1, which is only for convenience of description and simplification of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, should not be construed as limiting the scope of the present invention.
The utility model provides a pair of mechanical locking carbide combination roll please refer to fig. 1, including steel dabber 1, collars subassembly, lock nut 3, gasket 4, stop collar 6, bolt 2 (hexagon socket head cap screw) and key etc.. The roller ring assembly, the locking nut 3, the gasket 4 and the limiting sleeve 6 are all installed on an assembling section in the middle of the steel mandrel 1, the assembling section is located on the left side of the shaft shoulder and comprises a threaded portion and a smooth shaft portion, the locking nut 3 is installed on the threaded portion, and the roller ring assembly, the gasket 4 and the limiting sleeve 6 are all installed on the smooth shaft portion.
The utility model discloses a mechanical locking carbide combination roll mainly realizes through following technical scheme:
(1) According to the conditions of rolling mill equipment, such as cutting number, cutting distance, maximum roll diameter and the like, and considering the strength and economy of the hard alloy roll collar 5, the strength of the steel mandrel 1 and the like, designing the form and position sizes of parts such as the steel mandrel 1 and the hard alloy roll collar 5, and processing related parts according to the designed sizes;
(2) The steel mandrel 1 and the limiting sleeve 6 are in small clearance fit, and are positioned by a shaft shoulder 7 on the steel mandrel 1 and fixed by a key and a key groove to avoid sliding, and in detail, a step matched with the shaft shoulder 7 is arranged on the inner wall of the limiting sleeve 6;
(3) The roll collar assembly is arranged on the steel mandrel 1 and is positioned by means of a limiting sleeve 6, the roll collar assembly comprises at least one hard alloy roll collar 5, when the number of the hard alloy roll collars 5 is not less than two, two adjacent hard alloy roll collars 5 are separated by a spacer ring 8, the spacer ring 8 is made of steel, the spacer ring 8 is in small clearance fit with the steel mandrel 1, the spacer ring 8 and the steel mandrel 1 are fixed through a key groove and a key, and the hard alloy roll collars 5 and the steel mandrel 1 are in interference fit mainly through hot installation;
(4) The gasket 4 is in small clearance fit with the steel mandrel 1, is positioned by the hard alloy roll collar 5 positioned at the leftmost side and is fixed by the key and the key groove to avoid sliding;
(5) The locking nut 3 and the steel mandrel 1 are assembled through threads, and a certain pre-tightening force is arranged between the bolt 2 and the gasket 4;
(6) 12 threaded counter bores are circumferentially arranged on the end face of the locking nut 3, certain pretightening force is given to the gasket 4 through locking of the bolt 2, the pretightening force is transmitted to the roller ring assembly through the gasket 4, and the effect of better protecting the leftmost hard alloy roller ring 5 is achieved.
It should be noted that the utility model discloses all spare parts processing is convenient and relatively lower to the size precision requirement, and the quick convenient dismantlement installation of the combination roll of being convenient for has better comprehensive economic benefits.
It is right above the utility model provides a mechanical locking carbide makes up roll has carried out detailed introduction, and it is right to have used specific individual example here the utility model discloses a principle and concrete implementation have explained, and above-mentioned embodiment only is used for helping understanding the utility model discloses a method and core thought. It should be noted that any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are within the scope of the present invention for those skilled in the art.
Claims (6)
1. A mechanically locking cemented carbide composite roll, comprising:
a steel mandrel;
the roll collar assembly is arranged on the steel mandrel;
the limiting sleeve is arranged on one side of the roller ring assembly to axially position the roller ring assembly, the limiting sleeve is in small clearance fit with the steel mandrel, a shaft shoulder for positioning the limiting sleeve is arranged on the steel mandrel, and the limiting sleeve and the steel mandrel are fixed through a key groove and a key;
the locking nut is arranged on one side, away from the limiting sleeve, of the roll collar assembly and is in threaded connection with the steel mandrel, a plurality of threaded counter bores are uniformly distributed in the circumferential direction of the locking nut at intervals, and the locking nut is matched with the threaded counter bores through bolts to apply axial pre-tightening force to the roll collar assembly;
the gasket is arranged between the locking nut and the roller ring assembly to transmit axial pretightening force, and the gasket is in small clearance fit with the steel mandrel.
2. The mechanically locked cemented carbide composite roll according to claim 1, wherein the roll collar assembly comprises at least one cemented carbide roll collar, when the number of the cemented carbide roll collars is not less than two, two adjacent cemented carbide roll collars are separated by a spacer ring, the cemented carbide roll collars are in interference fit with the steel mandrel, the spacer ring is in small clearance fit with the steel mandrel, and the spacer ring and the steel mandrel are fixed by a key groove and a key.
3. The mechanically locking cemented carbide composite roll according to claim 2, characterized in that the spacer ring is made of steel.
4. The mechanically locking cemented carbide composite roll according to claim 1, wherein the shim and the steel mandrel are fixed by a keyway and a key.
5. The mechanically locked cemented carbide composite roll according to claim 1, wherein the inner wall of the retainer sleeve is provided with a step which is engaged with the shoulder.
6. The mechanically locked cemented carbide composite roll according to claim 1, wherein the number of the threaded counterbores is 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221466517.6U CN217941357U (en) | 2022-06-13 | 2022-06-13 | Mechanically-locked hard alloy combined roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221466517.6U CN217941357U (en) | 2022-06-13 | 2022-06-13 | Mechanically-locked hard alloy combined roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217941357U true CN217941357U (en) | 2022-12-02 |
Family
ID=84215748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221466517.6U Active CN217941357U (en) | 2022-06-13 | 2022-06-13 | Mechanically-locked hard alloy combined roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217941357U (en) |
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2022
- 2022-06-13 CN CN202221466517.6U patent/CN217941357U/en active Active
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