CN211637740U

CN211637740U - Lower roller of steel drawing machine

Info

Publication number: CN211637740U
Application number: CN201921604882.7U
Authority: CN
Inventors: 董留忠; 钱洪建; 袁建兴
Original assignee: Jiangsu Shagang Group Co Ltd; Zhangjiagang Hongchang Steel Plate Co Ltd
Current assignee: Jiangsu Shagang Group Co Ltd; Zhangjiagang Hongchang Steel Plate Co Ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-10-09
Anticipated expiration: 2029-09-25

Abstract

The utility model provides a lower roll of a steel drawing machine, which comprises a lower roll body and a half sleeve, wherein an annular groove is arranged at the middle part on the outer wall of the lower roll body, and a square key groove for a shaft is arranged in the groove; the half sleeve comprises two semicircular ring roller sleeves which are oppositely arranged, and a square key groove for a hole is arranged on the inner wall of one semicircular ring roller sleeve; the half-ring roller sleeve and the lower roller synchronously rotate through a square key; the two semicircular roller sleeves are respectively provided with a fixing block, and the fixing blocks on the two semicircular roller sleeves correspond to each other one by one and are fixedly connected through bolt and nut assemblies. The utility model discloses a half cover falls into two halves formula, relies on two bolt fastening, need not change and draws the steel machine lower roll to demolish, and the device can realize fast recovering wearing and tearing serious drawing the steel machine and put into use, has improved the plant maintenance efficiency, still can sparingly draw the prosthetic expense of steel machine lower roll wearing and tearing build-up welding, and periodic replacement more can prevent the production of finished product quality problem.

Description

Lower roller of steel drawing machine

Technical Field

The utility model belongs to the field of mechanical equipment, a draw steel machine lower roll is related to.

Background

The steel drawing machine is important equipment in steelmaking continuous casting production, and is used for transversely moving a casting blank on a blank discharging roller way so as to enter a stepping cooling bed for turning, cooling and straightening or enter a hot conveying roller way to be conveyed to a heating furnace for bar materials and wire materials for rolling. The lower roll of the steel drawing machine is often seriously abraded after long-term use, the quality of a finished product is seriously influenced, and the time for replacing the lower roll of the steel drawing machine each time is about 5 hours, so that the production efficiency is reduced; and after the lower roll of the steel drawing machine is replaced, the abraded part of the lower roll of the steel drawing machine is subjected to surfacing processing to reach a standard size, the maintenance cost is at least 1000 yuan, and the maintenance cost is high.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved is as follows: to the technical problem, the utility model provides a draw steel machine lower roll. The device can realize quick recovery of the seriously worn steel drawing machine, save the cost of the lower roller of the steel drawing machine for wear surfacing repair, and prevent the quality problem of finished products by periodic replacement.

The technical scheme is as follows: a lower roll of a steel drawing machine comprises a lower roll body and a half sleeve, wherein an annular groove is formed in the middle of the outer wall of the lower roll body, and a square key groove for a shaft is formed in the groove; the half sleeve comprises two semicircular ring roller sleeves which are oppositely arranged, and a square key groove for a hole is formed in the inner wall of one semicircular ring roller sleeve; the half-wave sleeve is sleeved in the annular groove of the lower roller body, the shaft of the lower roller is aligned with the square key groove for the semicircular roller sleeve hole, and the semicircular roller sleeve and the lower roller synchronously rotate through the square key; the two semicircular roller sleeves are respectively provided with a plurality of fixing blocks with bolt holes, and the fixing blocks on the two semicircular roller sleeves correspond to one another and are fixedly connected through bolt and nut assemblies, so that the two semicircular roller sleeves are fixedly connected.

Furthermore, the size of the bending radius of the inner wall of the semicircular ring roller sleeve is matched with the size of the bending radius of the outer wall of the annular groove.

Furthermore, the number of the fixing blocks on the semicircular roller sleeves is 4.

Further, the bending radius of the outer wall of the half sleeve is the same as that of the outer wall of the lower roller body.

Furthermore, a hoisting ring is arranged on the semicircular ring roller sleeve.

Has the advantages that: the utility model discloses a half cover falls into two halves formula, relies on bolt and nut subassembly fixed, need not change and draws the steel machine lower roll to demolish, and the device can realize the serious drawing steel machine of quick recovery wearing and tearing and put into use, has improved the plant maintenance efficiency, still can sparingly draw the prosthetic expense of steel machine lower roll wearing and tearing build-up welding, and periodic replacement more can prevent the production of finished product quality problems.

Drawings

Fig. 1 is a schematic structural view of the lower roll body of the present invention.

Fig. 2 is a schematic structural view of the half sleeve of the present invention.

Fig. 3 is a side view of the half sleeve of the present invention.

Fig. 4 is a top view of the half-sleeved according to the present invention.

Fig. 5 is a schematic structural view of the lower roll of the steel drawing machine of the utility model.

In the figure, 1 is a lower roller, 2, a half sleeve, 3, a square key groove for a shaft, 4, a square key groove for a hole, 5, a square key, 6, a fixed block, 7 and a bolt and nut assembly.

Detailed Description

Example 1

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1-5, the utility model provides a lower roll of a steel drawing machine, which comprises a lower roll body 1 and a half sleeve 2, wherein an annular groove is arranged at the middle part of the outer wall of the lower roll body 1, and a square key groove 3 for one shaft is arranged in the groove; the half sleeve 2 comprises two semicircular ring roller sleeves which are oppositely arranged, and a hole square key groove 4 is arranged on the inner wall of one semicircular ring roller sleeve; the half sleeve 2 is arranged in an annular groove of the lower roller body 1, a square key groove for a shaft of the lower roller is aligned with a square key groove for a semicircular roller sleeve hole, and the semicircular roller sleeve and the lower roller synchronously rotate through a square key 5; two semicircle ring roller sheathes in and is equipped with 4 fixed blocks 6 respectively, is equipped with the bolt hole on the fixed block 6, and the fixed block 6 one-to-one on two semicircle ring roller sheathes passes through bolt and nut subassembly 7 fixed connection for two semicircle ring roller sheathes fixed connection constitute the half cover. The bending radius of the inner wall of the semicircular ring roller sleeve is matched with the bending radius of the outer wall of the annular groove. The bending radius of the outer wall of the half sleeve is the same as that of the outer wall of the lower roller body. The semicircular roller sleeve can be further provided with a hoisting ring so as to be convenient for mounting and dismounting the half sleeve.

Once the half sleeve of the lower roller is worn, only four bolts need to be disassembled, and the whole replacing process only needs about 20 minutes, so that the replacing time is greatly shortened, and the replacing labor intensity is reduced; the processing cost of the lower roll half sleeve of the replaced steel drawing machine is about 400 yuan, and the maintenance cost is reduced. And a hafford set period replacement plan is made in the production period, and replacement is carried out due to expiration, so that the quality problem of finished products is effectively prevented.

The above is only the real-time mode of the utility model, and for the ordinary person, all can understand rapidly and use, without departing from the principle of the utility model, a plurality of improvements and decorations can also be made.

Claims

1. The lower roll of the steel drawing machine comprises a lower roll body and is characterized in that: the middle part of the outer wall of the lower roll body is provided with an annular groove, and a square key groove for a shaft is arranged in the groove; the half sleeve comprises two semicircular ring roller sleeves which are oppositely arranged, and a square key groove for a hole is formed in the inner wall of one semicircular ring roller sleeve; the half-wave sleeve is sleeved in the annular groove of the lower roller body, the shaft of the lower roller is aligned with the square key groove for the semicircular roller sleeve hole, and the semicircular roller sleeve and the lower roller synchronously rotate through the square key; the two semicircular roller sleeves are respectively provided with a plurality of fixing blocks with bolt holes, and the fixing blocks on the two semicircular roller sleeves correspond to one another and are fixedly connected through bolt and nut assemblies, so that the two semicircular roller sleeves are fixedly connected.

2. A lower roll for a steel drawing machine as defined in claim 1, wherein: the size of the bending radius of the inner wall of the semicircular ring roller sleeve is matched with that of the outer wall of the annular groove.

3. A lower roll for a steel drawing machine as defined in claim 1, wherein: the number of the fixing blocks on the semicircular roller sleeves is 4.

4. A lower roll for a steel drawing machine as defined in claim 1, wherein: the bending radius of the outer wall of the half sleeve is the same as that of the outer wall of the lower roller body.

5. A lower roll for a steel drawing machine as defined in claim 1, wherein: and the semicircular ring roller sleeve is provided with a hoisting ring.