CN211071329U

CN211071329U - External support structure for mandrel of recoiling machine

Info

Publication number: CN211071329U
Application number: CN201922155222.1U
Authority: CN
Inventors: 陈荣华; 潘真; 王辉; 芮白林
Original assignee: Maanshan Iron and Steel Co Ltd
Current assignee: Maanshan Iron and Steel Co Ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-07-24
Anticipated expiration: 2029-12-05

Abstract

The utility model discloses an outer bearing structure of coiling machine dabber, including outer support end spindle nose and connecting bolt, be equipped with annular bearing structure in the outer support end spindle nose, connecting bolt passes the dabber link in outer support end spindle nose and the annular bearing structure and is connected. The utility model discloses can guarantee the reliability of rigid connection between dabber and the outer support end spindle nose, again can easy to assemble, avoid or reduce the shearing stress of bolt to guarantee the working strength of dabber.

Description

External support structure for mandrel of recoiling machine

Technical Field

The utility model belongs to the technical field of batch core shaft connection structure, concretely relates to external support structure of batch machine dabber.

Background

In the production process of the cold-rolled strip steel, in order to obtain a good rolling effect, high-tension rolling must be ensured, and high-tension coiling must be carried out during coiling so as to ensure the tension requirement of an outlet of a final stand.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the technical problem who exists among the prior art. Therefore, the utility model provides an outer bearing structure of coiling machine dabber, the purpose reduces connecting bolt's shear stress between coiling machine dabber and the outer support end spindle nose.

In order to realize the purpose, the utility model discloses the technical scheme who takes does:

an outer support structure of a coiler mandrel comprises an outer support end shaft head and a connecting bolt, wherein an annular support structure is arranged in the outer support end shaft head, and the connecting bolt penetrates through the outer support end shaft head to be connected with the mandrel connecting end in the annular support structure.

The annular supporting structure comprises an annular supporting groove, and a first chamfer is arranged on the inner side of the annular supporting groove in the radial direction.

And a second chamfer is arranged on the outer side of the annular supporting groove in the radial direction.

The connecting bolts are multiple and are uniformly distributed in the circumferential direction of the annular supporting structure.

And the connecting bolt is provided with a spring gasket.

The utility model has the advantages that: compared with the prior art, the utility model has the advantages that, novel structure, it is with low costs, it is less to original design change, simple to operate, the operation is reliable. After the device is put into the outlet of the horse steel cold rolling mill, the fracture condition of the connecting bolt is basically eliminated, the fault is avoided, the production continuity of the cold-rolled strip steel is improved, and a better effect is achieved after the device is implemented. The utility model discloses can guarantee the reliability of rigid connection between dabber and the outer support end spindle nose, again can easy to assemble, avoid or reduce the shearing stress of bolt to guarantee the working strength of dabber.

Drawings

The description includes the following figures, the contents shown are respectively:

fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural view of the present invention assembled with a mandrel.

Labeled as:

1. the outer support end shaft head 2, the connecting bolt 3, the annular support structure 4, the mandrel 5 and the mandrel sector plate.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings, for the purpose of helping those skilled in the art to understand more completely, accurately and deeply the conception and technical solution of the present invention, and to facilitate its implementation. It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do 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 thus should not be construed as limiting the present invention. In the following embodiments, the terms "first" and "second" do not denote an absolute structural and/or functional distinction or a sequential order of execution, but are merely used for convenience of description.

As shown in fig. 1 to 2, an external support structure of a coiler mandrel comprises an external support end shaft head 1 and a connecting bolt 2, wherein an annular support structure 3 is arranged in the external support end shaft head 1, and the connecting bolt 2 penetrates through the external support end shaft head 1 to be connected with the connecting end of a mandrel 4 in the annular support structure 3. In the production process of the existing spindle head, due to the self weight of a steel coil and the tension of strip steel, when four connecting columns in the spindle rotate to pass through the resultant force direction of two forces, the four connecting columns receive a large shearing force, the four connecting columns finally act on a connecting bolt, the bolt generates a shearing stress, an annular supporting structure is additionally arranged in the spindle head of the outer supporting end, the shearing stress of the connecting bolt between the spindle body of the coiling machine and the spindle head of the outer supporting end can be avoided or reduced, and the reliability of connection is ensured.

The annular support structure 3 comprises an annular support groove, and a first chamfer is arranged on the inner side of the annular support groove 3 in the radial direction. As shown in fig. 2, the mandrel and the mandrel sector plate 5 are conveniently installed in a matched manner by the arrangement of the annular support groove (support ring), the first chamfer is positioned at the bottom of the annular support structure, and the bottom chamfer is mainly used for eliminating stress concentration at the root part and improving the strength of the support ring. And a second chamfer is arranged on the outer side of the annular supporting groove in the radial direction. That is, the second chamfer is located at the top of the annular support structure, and the top chamfer is mainly used for facilitating assembly and reducing the assembly time. In the above structure setting, the chamfer is additionally arranged at the matching position, through micro clearance fit, the installation is convenient, the rigidity of the whole mandrel can be improved, and the force of the four connecting columns in the mandrel finally falls on the inner ring and the outer ring of the shaft head when the mandrel is normally coiled, so that the connecting bolt is prevented from being subjected to shear stress.

In order to ensure the reliability of the connection between the mandrel and the outer support end shaft head, a plurality of connecting bolts 2 are uniformly distributed in the circumferential direction of the annular support structure. Specifically, three or four connecting bolts may be provided. In addition, during installation, the spring gasket is additionally arranged on the connecting bolt, so that when the mandrel passes through in a rotating mode, the spring gasket plays a role in buffering, impact of hard connection is avoided, and shearing stress of the bolt is further reduced.

The invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-described manner. Various insubstantial improvements are made by adopting the method conception and the technical proposal of the utility model; or without improvement, the above conception and technical solution of the present invention can be directly applied to other occasions, all within the protection scope of the present invention.

Claims

1. The outer support structure of the mandrel of the recoiling machine comprises an outer support end shaft head and a connecting bolt, and is characterized in that an annular support structure is arranged in the outer support end shaft head, and the connecting bolt penetrates through the outer support end shaft head to be connected with the connecting end of the mandrel in the annular support structure.

2. The coiler mandrel outer support structure according to claim 1, wherein the annular support structure comprises an annular support groove, and a first chamfer is provided on an inner side of the annular support groove in a radial direction.

3. The outer support structure of the coiler mandrel according to claim 1, wherein a second chamfer is provided on the radially outer side of the annular support groove.

4. The external support structure of the coiler mandrel according to claim 1, wherein the connecting bolts are multiple and are uniformly distributed in the circumferential direction of the annular support structure.

5. The external support structure of a coiler mandrel according to claim 1, wherein the connecting bolt is provided with a spring washer.