阅读说明：本技术 锥套及包括其的辊箱 (Taper sleeve and roller box comprising same ) 是由 成西平 贺圣茗 于 2020-12-31 设计创作，主要内容包括：本发明涉及钢材轧制技术领域,公开了一种锥套,其包括通过摩擦焊相连接的第一套体和第二套体,第一套体的材质为不锈钢,用于装配辊环,且第一套体具有位于其外侧面的渗氮层,第二套体的材质为中碳钢。与现有技术相比,第一套体采用硬度较高的不锈钢,并且具有耐磨性能优异的渗氮层,因此它可经受住辊环频繁更换所带来的磨损,有效地保证与辊环装配所需的过盈量,进而可减少锥套的损耗,延长锥套的使用寿命；与此同时,由于第二套体不直接与辊环装配,因此它采用成本较低的中碳钢即可满足使用要求,进而可降低锥套的生产成本。由此,本发明提供的锥套可降低企业的经营成本,提高棒线材的生产效率。另外,本发明还公开了一种采用上述锥套的辊箱。(The invention relates to the technical field of steel rolling, and discloses a taper sleeve which comprises a first sleeve body and a second sleeve body which are connected through friction welding, wherein the first sleeve body is made of stainless steel and used for assembling a roll collar, the first sleeve body is provided with a nitriding layer positioned on the outer side surface of the first sleeve body, and the second sleeve body is made of medium carbon steel. Compared with the prior art, the first sleeve body is made of stainless steel with higher hardness and has a nitriding layer with excellent wear resistance, so that the first sleeve body can withstand the wear caused by frequent replacement of the roll collar, effectively ensures the interference magnitude required by assembly with the roll collar, further can reduce the loss of the taper sleeve and prolong the service life of the taper sleeve; meanwhile, the second sleeve body is not directly assembled with the roll collar, so that the use requirement can be met by adopting medium carbon steel with lower cost, and the production cost of the taper sleeve can be further reduced. Therefore, the taper sleeve provided by the invention can reduce the operation cost of enterprises and improve the production efficiency of rods and wires. In addition, the invention also discloses a roller box adopting the taper sleeve.)

1. A drogue, comprising:

the first sleeve body is made of stainless steel and used for assembling the roller ring, and the first sleeve body is provided with a nitriding layer positioned on the outer side surface of the first sleeve body;

the second sleeve body is coaxial with the first sleeve body, one end of the second sleeve body is connected with one end of the first sleeve body through friction welding, and the second sleeve body is made of medium carbon steel.

2. The drogue of claim 1, wherein:

the inner diameter of the first sleeve body is gradually reduced from one end, far away from the second sleeve body, of the first sleeve body along the direction approaching the second sleeve body, so that a conical surface section is formed on the inner side surface of the first sleeve body.

3. The drogue of claim 1, wherein:

the inner side surface of the second sleeve body is provided with a plurality of inner convex blocks which are uniformly distributed along the circumferential direction of the second sleeve body.

4. The drogue of claim 3, wherein:

the inner convex block extends from one end, far away from the first sleeve body, of the second sleeve body along the direction approaching to the first sleeve body.

5. The drogue of claim 1, wherein:

the outer side of the second sleeve body is provided with a plurality of outer convex blocks which are uniformly distributed along the circumferential direction of the second sleeve body.

6. The drogue of claim 5, wherein:

the outer convex block is arranged at one end of the second sleeve body far away from the first sleeve body.

7. The drogue of claim 1, wherein:

the first sleeve body is made of 630 stainless steel.

8. The drogue of claim 1, wherein:

the second sleeve body is made of 42CrMo steel.

9. The drogue of claim 1, wherein:

the thickness T of the nitriding layer is more than or equal to 0.03 mm.

10. A roller housing, characterized in that it comprises a cone sleeve according to any one of claims 1-9.

Technical Field

The invention relates to the technical field of steel rolling, in particular to a taper sleeve and a roller box comprising the same.

Background

The roll collar is the core component of roll box, and it has very important effect to the quality of stick wire rod, and the taper sleeve is then used for locking the roll collar, and the roll collar tight sleeve is outside the taper sleeve, and the taper sleeve tight sleeve is outside the roller to the roller can drive the roll collar and rotate, in order to realize the rolling of stick wire rod.

In the process of rolling the rod and the wire, the roll collar needs to be replaced frequently, the roll collar is replaced once in 10 hours at the shortest time, and is replaced once in 2 days at the longest time, and the roll collar is replaced once in 1 day generally. The roller ring is replaced by a hydraulic plugging mode usually, the roller ring and the taper sleeve are disassembled and assembled, the pressure when the taper sleeve is inserted into the roller ring can reach 35mpa, and the pressure when the taper sleeve is pulled out of the roller ring can reach 70 mpa. Because taper sleeve and collars are interference fit, consequently dismouting can lead to taper sleeve wearing and tearing many times, causes not to have magnitude of interference for taper sleeve life reduces, directly scraps even, and the frequent change of taper sleeve that produces from this not only can increase the operating cost of enterprise, still can reduce production efficiency simultaneously.

Disclosure of Invention

The invention aims to provide a taper sleeve with high hardness, long service life and low cost and a roller box comprising the same.

In order to achieve the above object, the present invention provides a drogue, comprising:

the first sleeve body is made of stainless steel and used for assembling the roller ring, and the first sleeve body is provided with a nitriding layer positioned on the outer side surface of the first sleeve body;

the second sleeve body is coaxial with the first sleeve body, one end of the second sleeve body is connected with one end of the first sleeve body through friction welding, and the second sleeve body is made of medium carbon steel.

In some embodiments of the present application, an inner diameter of the first sleeve body decreases gradually from an end of the first sleeve body, which is away from the second sleeve body, toward the second sleeve body, so that a conical surface section is formed on an inner side surface of the first sleeve body.

In some embodiments of the present application, the inner side surface of the second sleeve body has a plurality of inner protrusions, and the inner protrusions are uniformly distributed along the circumferential direction of the second sleeve body.

In some embodiments of the present application, the inner lugs are provided in two, which are symmetrically disposed about a centerline of the second sleeve body.

In some embodiments of the present application, the inner protrusion extends from an end of the second sleeve body away from the first sleeve body in a direction approaching the first sleeve body.

In some embodiments of the present application, the outer side surface of the second sleeve body has an outer protrusion, and the outer protrusion is provided in a plurality and uniformly distributed along the circumferential direction of the second sleeve body.

In some embodiments of the present application, the outer protrusion is disposed on an end of the second sleeve body away from the first sleeve body.

In some embodiments of the present application, the first sleeve body is made of 630 stainless steel.

In some embodiments of the present application, the second sheath body is made of 42CrMo steel.

In some embodiments of the present application, the thickness T of the nitrided layer is 0.03mm or more.

Based on the same purpose, the invention also provides a roller box which comprises the taper sleeve.

The invention provides a taper sleeve, which has the beneficial effects that compared with the prior art:

on one hand, the first sleeve body for assembling the roll collar is made of stainless steel with higher hardness and has a nitriding layer with excellent wear resistance, so that the first sleeve body can withstand the wear caused by frequent replacement of the roll collar, effectively ensures the magnitude of interference required by assembly with the roll collar, further can reduce the loss of the taper sleeve and prolong the service life of the taper sleeve; on the other hand, the second sleeve body is not directly assembled with the roll collar, so that the use requirement can be met by adopting medium carbon steel with lower cost, the production cost of the taper sleeve can be further reduced, and the economic benefit of the taper sleeve is improved; based on the two aspects, the taper sleeve provided by the invention can reduce the operation cost of enterprises and improve the production efficiency of rods and wires.

The invention also provides a roller box, which has the advantages of high production efficiency, low maintenance cost, good economic benefit and the like due to the adoption of the taper sleeve.

Drawings

FIG. 1 is a schematic longitudinal cross-sectional view of a drogue according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a drogue in accordance with an embodiment of the present invention.

In the figure: 1. a first sleeve body; 11. a conical surface section; 2. a second sleeve body; 21. an inner bump; 22. and an outer bump.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first" and "second" are used for descriptive purposes only to distinguish one type of technical feature from another, and are not to be construed as indicating or implying any relative importance, order or quantity of such technical features, i.e., a "first" technical feature may be referred to as a "second" technical feature, a "second" technical feature may also be referred to as a "first" technical feature, and a technical feature defined as "first" or "second" may explicitly or implicitly include one or more such technical features. In addition, unless otherwise specified, "a plurality" means two or more.

It is emphasized that, in the description of the present application, the terms "mounted", "connected" and "connected", unless expressly specified or limited otherwise, are to be construed broadly, e.g. as meaning fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Referring to fig. 1, an embodiment of the present invention provides a taper sleeve, which mainly includes a first sleeve body 1 and a second sleeve body 2; the first sleeve body 1 is made of stainless steel and is used for assembling a roller ring, and the first sleeve body 1 is provided with a nitriding layer (not shown) positioned on the outer side surface thereof; the second sleeve body 2 and the first sleeve body 1 are coaxially arranged, one end of the second sleeve body 2 is connected with one end of the first sleeve body 1 through friction welding, and the second sleeve body 2 is made of medium carbon steel.

Based on the structure, the first sleeve body 1 for assembling the roll collar is made of stainless steel with higher hardness and has a nitriding layer with excellent wear resistance, so that the wear caused by frequent replacement of the roll collar can be resisted, the interference magnitude required by assembling the roll collar can be effectively ensured, the loss of the taper sleeve can be reduced, and the service life of the taper sleeve can be prolonged; meanwhile, the second sleeve body 2 is not directly assembled with the roll collar, so that the use requirement can be met by adopting medium carbon steel with lower cost, the production cost of the taper sleeve can be further reduced, and the economic benefit of the taper sleeve is improved; based on the two aspects, the taper sleeve provided by the invention can reduce the operation cost of enterprises and improve the production efficiency of rods and wires.

Optionally, as shown in fig. 1, in this embodiment, the inner diameter of the first sleeve body 1 gradually decreases from the end of the first sleeve body 1 away from the second sleeve body 2 along the direction approaching the second sleeve body 2, so that a tapered section 11 is formed on the inner side surface of the first sleeve body 1 to ensure that the roller shaft and the tapered sleeve can be tightly fitted when the roller shaft penetrates into the tapered sleeve.

Optionally, as shown in fig. 1 and fig. 2, in this embodiment, the inner side surface of the second sleeve body 2 has an inner protrusion 21 extending from one end of the second sleeve body 2 away from the first sleeve body 1 in a direction approaching the first sleeve body 1, and the inner protrusion is used for connecting a hydraulic mechanism when replacing the roller ring, so as to implement a plugging operation. Furthermore, the inner protrusions 21 are provided in a plurality and uniformly distributed along the circumferential direction of the second sleeve body 2, so that the taper sleeve is ensured to have better dynamic balance when rotating. Preferably, the two inner protrusions 21 are symmetrically arranged with respect to the center line of the second sleeve body 2.

Optionally, as shown in fig. 1 and fig. 2, in this embodiment, the outer side surface of the second sleeve body 2 has an outer protrusion 22, and the outer protrusion 22 is disposed at an end of the second sleeve body 2 away from the first sleeve body 1, so that when the taper sleeve is installed on the roller box, the outer protrusion 22 can cooperate with the inner wall stepped structure of the protective cover of the roller box to improve the safety of the roller box. Further, like the inner protrusions 21, the outer protrusions 22 are provided in a plurality and uniformly distributed along the circumferential direction of the second sleeve body 2, so as to ensure that the taper sleeve has better dynamic balance when rotating. Preferably, the outer protrusions 22 are four, and are disposed opposite to each other, and two of the outer protrusions 22 are disposed opposite to two of the inner protrusions 21, respectively.

Optionally, in this embodiment, the first sleeve body 1 is preferably made of 630 stainless steel with high hardness, high strength and good corrosion resistance; the second sleeve body 2 is preferably made of 42CrMo steel with high strength, good toughness and lower price than 630 stainless steel.

Optionally, in this embodiment, the thickness T of the nitriding layer is greater than or equal to 0.03mm, so as to ensure a better wear-resistant effect.

In addition, the embodiment of the invention also provides the roller box, which adopts the taper sleeve and has the advantages of high production efficiency, low maintenance cost, good economic benefit and the like.

To sum up, the embodiment of the invention provides a taper sleeve and a roller box comprising the same, the taper sleeve comprises a first sleeve body 1 and a second sleeve body 2 which are connected through friction welding, the first sleeve body 1 is made of stainless steel and used for assembling a roller ring, the first sleeve body 1 is provided with a nitriding layer positioned on the outer side surface of the first sleeve body, and the second sleeve body 2 is made of medium carbon steel. Compared with the prior art, the taper sleeve can withstand the abrasion caused by frequent replacement of the roll collar, effectively ensures the interference magnitude required by the assembly with the roll collar, has lower cost, further can reduce the operation cost of enterprises and improve the production efficiency of rod and wire; the roller box has the advantages of high production efficiency, low maintenance cost and good economic benefit.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.