CN209753659U

CN209753659U - Rolling mill frame pull rod

Info

Publication number: CN209753659U
Application number: CN201920030596.8U
Authority: CN
Inventors: 沙天雄
Original assignee: Nanjing Iron and Steel Co Ltd
Current assignee: Nanjing Iron and Steel Co Ltd
Priority date: 2019-01-08
Filing date: 2019-01-08
Publication date: 2019-12-10
Anticipated expiration: 2029-01-08

Abstract

The utility model discloses a rolling mill frame pull rod, including the body of rod, the pole head that extends upwards from the body of rod, the roll is located one side of the body of rod, and the body of rod leans on the side surface of roll as the internal surface of body of rod, and two surfaces perpendicular to this internal surface are the front surface and the back surface of body of rod respectively, the front surface is as the installation face of roll, sets up first screw hole, second screw hole and screw rod assembly groove on this installation face, first screw hole is used for fixing the top roll, the second screw hole is located first screw hole below and is used for fixing the bottom roll, the screw rod assembly groove is located second screw hole below and is used for installing the horizontal adjusting screw of bottom roll; the rod head is provided with a connecting section and a thread section located above the connecting section, and the surface of the thread section is provided with external threads used for adjusting a roll gap of the rolling mill. The pull rod is provided with the fixed roller through the rod body, and the roller gap of the rolling mill is adjusted through the rod head, so that the breakage of the pull rod can be effectively reduced, and the condition that the roughing mill set blocks steel is avoided.

Description

Rolling mill frame pull rod

Technical Field

The utility model relates to a steel rolling equipment, concretely relates to rolling mill frame pull rod.

Background

The roughing mill has large rolling reduction due to the process design requirements, and the breakage failure of the pull rod of the frame is very frequent. Wherein the faults of the semi-continuous rolling mill train occur most frequently, even more than six faults occur each year. And the condition of steel blocking of the roughing mill group can be caused every time the pull rod is broken, the broken rack needs to be integrally disassembled and inspected to replace spare parts and check and adjust the size, the process needs 4-5 days, the processing time is long, and the processing process is very complex and difficult. Meanwhile, the spare parts are consumed in a large amount, and the maintenance cost is high.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to overcome the defects of the prior art, the utility model provides a rolling mill frame pull rod, this pull rod is difficult for splitting, effectively improves the whole load capacity of rolling mill.

The technical scheme is as follows: the utility model discloses a rolling mill frame pull rod for the roll of fixed rolling mill, including the body of rod, the pole head that upwards extends from the body of rod, the roll is located one side of the body of rod, and the body of rod leans on the side surface of roll as the internal surface of body of rod, and two surfaces perpendicular to this internal surface are the front surface and the back surface of body of rod respectively, the front surface is as the installation face of roll, sets up first screw hole, second screw hole and screw rod assembly groove on this installation face, first screw hole is used for fixing the top roll, the second screw hole is located first screw hole below and is used for fixing the bottom roll, the screw rod assembly groove is located second screw hole below and is used for installing the horizontal adjusting screw of bottom roll; the rod head is provided with a connecting section and a thread section located above the connecting section, and the surface of the thread section is provided with external threads used for adjusting a roll gap of the rolling mill.

Has the advantages that: compared with the prior art, the pull rod is provided with the rod body and the rod head, the roller is installed and fixed through the rod body, the roller gap of the rolling mill is adjusted through the thread section of the rod head, and therefore weak links of the pull rod are reduced, breakage of the pull rod is effectively reduced, and the condition that steel is blocked in a roughing mill set is avoided.

Drawings

FIG. 1 is a front view of a roll stand drawbar arrangement according to the present invention;

Fig. 2 is a left side view of the drawbar of fig. 1.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In practical application, four pull rods are arranged on each stand and used for mounting and fixing rollers of a rolling mill.

Specifically, as shown in fig. 1 and 2, the pull rod includes a rod body 1 and a rod head 2 extending upward from the rod body 1. The roller is located one side of the body of rod 1, and the body of rod 1 has four side surfaces, and the side surface of the body of rod 1 near the roller is the notch cuttype surface, and the sunken part in this notch cuttype surface reserves installation space for the roller, regard this side surface as the internal surface of the body of rod 1, and two surfaces perpendicular to this internal surface are the front surface and the back surface of the body of rod 1 respectively.

The front surface of the rod body 1 serves as a mounting surface of the roll, and a first threaded hole 11, a second threaded hole 13 and a screw mounting groove 14 are provided on the mounting surface. The first threaded holes 11 are used for fixing the upper roller, the mounting surface between the first threaded holes 11 and the inner surface is recessed backwards to form roller positioning grooves 12, and the roller positioning grooves 12 are used for positioning the upper roller. The second threaded hole 13 is located below the first threaded hole 11 and used for fixing a lower roller, and the screw assembly groove 14 is located below the second threaded hole 13 and used for installing a lower roller transverse adjusting screw.

The rear surface of the rod body 1 is provided with a roller inlet and outlet key groove 15, and the roller inlet and outlet key groove 15 extends from bottom to top and is used for fixing a roller inlet and outlet. The lower end of the rear surface is also provided with a fourth threaded hole 16, and the fourth threaded hole 16 is used for connecting a machine frame.

The head 2 has a connecting section 22 and a threaded section 21 above the connecting section 22. To avoid strength weaknesses, the minimum dimension of the width of the connecting section 22 is 130mm in this embodiment. The surface of the threaded section 21 is provided with external threads for adjusting the roll gap of the rolling mill, the upper end of the club head 2 is provided with a third threaded hole 23 extending downwards along the central axis of the club head 2, and the third threaded hole 23 is used for installing a limiter of a rack.

Claims

1. A rolling mill stand pull rod is used for fixing a roller of a rolling mill and is characterized by comprising a rod body (1) and a rod head (2) extending upwards from the rod body (1), wherein the roller is positioned on one side of the rod body (1), the side surface, close to the roller, of the rod body (1) serves as the inner surface of the rod body (1), two surfaces perpendicular to the inner surface are respectively the front surface and the rear surface of the rod body (1), the front surface serves as the mounting surface of the roller, a first threaded hole (11), a second threaded hole (13) and a screw assembling groove (14) are formed in the mounting surface, the first threaded hole (11) is used for fixing an upper roller, the second threaded hole (13) is positioned below the first threaded hole (11) and used for fixing a lower roller, and the screw assembling groove (14) is positioned below the second threaded hole (13) and used for installing a lower roller transverse adjusting screw; the club head (2) is provided with a connecting section (22) and a threaded section (21) positioned above the connecting section (22), and the surface of the threaded section (21) is provided with an external thread for adjusting the roll gap of the rolling mill.

2. The roll stand bar according to claim 1, wherein the mounting surface between the first threaded bore (11) and the inner surface is recessed rearwardly to form a roll positioning slot (12).

3. The roll stand bar of claim 1, wherein said rear surface is provided with a roll access keyway (15), said roll access keyway (15) extending from bottom to top.

4. The roll stand draw bar according to claim 1, wherein the head (2) is provided at its upper end with a third threaded hole (23) extending downwards along the central axis of the head (2), said third threaded hole (23) being used for mounting a stand stop.

5. a mill stand draw bar according to claim 1, characterized in that the rear surface lower end is further provided with a fourth threaded hole (16), the fourth threaded hole (16) being for connection to a mill stand.

6. A mill stand draw bar according to claim 1, characterised in that the smallest dimension of the width of the connecting section (22) is 130 mm.