CN219073915U

CN219073915U - Novel connection structure of short stress line rolling mill screwdown device

Info

Publication number: CN219073915U
Application number: CN202223508465.7U
Authority: CN
Inventors: 孙永波; 孙吉才
Original assignee: Laiwu Iron & Steel Metallurgy Ecological Engineering Technology Co ltd
Current assignee: Laiwu Iron & Steel Metallurgy Ecological Engineering Technology Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-05-26
Anticipated expiration: 2032-12-28

Abstract

The utility model relates to a novel connecting structure of a pressing device of a short stress line rolling mill, which comprises a left half coupler fixedly arranged at the right end of a left worm, a right half coupler fixedly arranged at the left end of a right worm, and an intermediate coupler positioned between the left half coupler and the right half coupler, wherein the intermediate coupler comprises an intermediate base body, and two bosses respectively fixedly arranged on the left side surface and the right side surface of the intermediate base body, the two bosses are mutually vertical and extend along the radial direction, and the right side surface of the left half coupler and the left side surface of the right half coupler are respectively provided with sliding grooves matched with the bosses. According to the utility model, the cross-shaped middle coupling is arranged between the left half coupling and the right half coupling, and the automatic adjustment is realized by utilizing the relative sliding between the boss and the chute, so that the structure is simple, the installation and the maintenance are convenient, the running condition of the pressing device is effectively improved, and the service life of the connecting structure between the left worm and the right worm is prolonged.

Description

Novel connection structure of short stress line rolling mill screwdown device

Technical Field

The utility model relates to the technical field of rolling mill equipment, in particular to a novel connecting structure of a rolling mill pressing device with a short stress line.

Background

At present, the pressing device of the short stress line rolling mill adopts two sets of gear boxes, the middle connecting part is two half couplings arranged at the shaft ends of two worm shafts, and the half couplings are connected into a whole through connecting bolts. The gap between the half coupler and the worm is very small no matter the half coupler is connected by a key or a tooth, the left worm and the right worm are required to have higher coaxiality, otherwise, once the left worm and the right worm are not coaxial, the connection is difficult, the rolling mill is movable, and the worm and the bearing are extremely easy to damage. In the practical use process, the fact that the worm shaft is injured and bent to cause different shafts is extremely difficult to avoid, and the defect of poor adaptability of the rigid connection brings great inconvenience to the use of the rolling mill screwdown device.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a novel connecting structure of a pressing device of a short stress line rolling mill, solves the problem that a left worm and a right worm are not coaxial, and improves the connection adaptability.

The utility model provides a novel connecting structure of a short stress line rolling mill pressing device, which comprises a left half coupler fixedly arranged at the right end of a left worm, a right half coupler fixedly arranged at the left end of a right worm, and an intermediate coupler positioned between the left half coupler and the right half coupler, wherein the intermediate coupler comprises an intermediate base body, two bosses respectively fixedly arranged at the left side surface and the right side surface of the intermediate base body, the two bosses are mutually perpendicular and extend along the radial direction, and the right side surface of the left half coupler and the left side surface of the right half coupler are respectively provided with sliding grooves matched with the bosses.

The boss and the chute of the connecting structure can freely slide relatively, when the left worm and the right worm are not coaxial, the stress caused by the fact that the left worm and the right worm are not coaxial is eliminated through the movement of the left half coupler and the right half coupler along the boss and the automatic adjustment in the rotation process.

As optimization, the left half coupler is connected with the left worm through a left key, an inner hole of the left half coupler is connected with the left worm in an axial sliding mode, a positioning bolt which is propped against the left worm is arranged on the side wall of the left half coupler in a penetrating mode in the radial direction, and the positioning bolt is connected with the left half coupler through threads. According to the optimization scheme, the left worm and the left half coupler are set to slide relatively, the left half coupler and the left worm are guaranteed to rotate synchronously through the left key, meanwhile, the axial position of the left half coupler on the left worm is conveniently adjusted, and the middle coupler is conveniently installed.

As optimization, the cross section of the boss is rectangular, and the width of the boss is smaller than 0.3-0.5 mm of the width of the chute. The boss structure of this optimization scheme is simple, and processing is convenient, has guaranteed the reliability of transmission moment of torsion moreover.

As optimization, the sliding grooves on the left half coupling and the right half coupling are all penetrated along the radial direction. According to the optimization scheme, the sliding groove is arranged to be communicated in the radial direction, so that the relative displacement space among the left half coupler, the middle coupler and the right half coupler is enlarged, and the application range is enlarged.

The beneficial effects of the utility model are as follows: through being equipped with the middle shaft coupling of cross between left and right half shaft coupling, utilize the relative slip between boss and the spout, realize automatically regulated, simple structure, installation is maintained conveniently, effectively improves the running condition of screwdown gear, has prolonged connection structure's between left and right worm life.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a top view of FIG. 1;

the figure shows:

1. left worm, 2, left key, 3, left half shaft coupling, 4, right half shaft coupling, 5, right key, 6, right worm, 7, middle shaft coupling, 8, positioning bolt.

Detailed Description

In order to clearly illustrate the technical characteristics of the scheme, the scheme is explained below through a specific embodiment.

The novel connecting structure of the short stress line rolling mill pressing device comprises a left half coupler 3 fixedly arranged at the right end of a left worm 1, a right half coupler 4 fixedly arranged at the left end of a right worm 6, and an intermediate coupler 7 positioned between the left half coupler 3 and the right half coupler 4, wherein the left half coupler is connected with the left worm through a left key 2, the right half coupler is connected with the right worm through a right key 5, and the left half coupler and the left worm synchronously rotate by utilizing force transmission torque of the left key and the right key, and the right half coupler and the right worm synchronously rotate.

The middle coupler 7 is an Oldham coupling, the structure of the middle coupler comprises a middle base body and two bosses respectively fixedly arranged on the left side surface and the right side surface of the middle base body, the boss on the left side surface is a left boss, the boss on the right side surface is a right boss, the left boss and the right boss are mutually perpendicular and extend along the radial direction, the right side surface of the left half coupler and the left side surface of the right half coupler are respectively provided with a sliding groove matched with the bosses, and the bosses and the sliding grooves can slide freely. As an optimization scheme, the cross section of the boss is rectangular, and the width of the boss is smaller than 0.3-0.5 mm of the width of the chute. In order to increase the relative position adjusting range between the left half coupling and the right half coupling, sliding grooves on the left half coupling and the right half coupling in the embodiment are all penetrated in the radial direction.

The right half coupler is connected with the right worm through interference fit, the inner hole of the left half coupler is connected with the left worm in an axial sliding mode, and a positioning bolt 8 propped against the left worm is arranged on the side wall of the left half coupler in a penetrating mode in the radial direction, and the positioning bolt is connected with the left half coupler through threads. The number of the positioning bolts is at least two, and the positioning bolts 8 are uniformly distributed along the circumferential direction.

According to the embodiment, the torque of the left half coupling and the torque of the right half coupling are transmitted through the boss on the intermediate shaft coupling, synchronous rotation between the left worm and the right worm are guaranteed, and the positions of the left half coupling and the right half coupling are automatically adapted and adjusted by utilizing the relative sliding between the boss and the sliding chute, so that the problem of stress damage caused by the fact that the left worm and the right worm are not coaxial is avoided.

The utility model has simple structure and convenient disassembly and assembly, not only enhances self-adjusting capability, but also facilitates equipment maintenance, effectively improves the running condition of the pressing device, prolongs the service life of the connecting structure between the worms, and reduces the maintenance cost and the workload of the rolling mill.

Of course, the above description is not limited to the above examples, and the technical features of the present utility model that are not described may be implemented by or by using the prior art, which is not described herein again; the above examples and drawings are only for illustrating the technical scheme of the present utility model and not for limiting the same, and the present utility model has been described in detail with reference to the preferred embodiments, and it should be understood by those skilled in the art that changes, modifications, additions or substitutions made by those skilled in the art without departing from the spirit of the present utility model and the scope of the appended claims.

Claims

1. A novel connection structure of short stress line rolling mill screwdown device is characterized in that: the novel gear box comprises a left half coupler fixedly arranged at the right end of a left worm, a right half coupler fixedly arranged at the left end of a right worm and an intermediate coupler positioned between the left half coupler and the right half coupler, wherein the intermediate coupler comprises an intermediate base body and two bosses respectively fixedly arranged on the left side surface and the right side surface of the intermediate base body, the two bosses are mutually perpendicular and extend along the radial direction, and the right side surface of the left half coupler and the left side surface of the right half coupler are respectively provided with sliding grooves matched with the bosses.

2. The connecting structure of the novel short stress line rolling mill pressing device according to claim 1, wherein: the left half coupler is connected with the left worm through a left key, an inner hole of the left half coupler is connected with the left worm in an axial sliding mode, and a positioning bolt which is propped against the left worm is arranged on the side wall of the left half coupler in a penetrating mode in the radial direction, and the positioning bolt is connected with the left half coupler through threads.

3. The connecting structure of the novel short stress line rolling mill pressing device according to claim 1, wherein: the cross section of the boss is rectangular, and the width of the boss is smaller than the width of the chute by 0.3-0.5 mm.

4. The connecting structure of the novel short stress line rolling mill pressing device according to claim 1, wherein: the sliding grooves on the left half coupling and the right half coupling are all penetrated along the radial direction.