Auxiliary tool for fastening wear-resisting plate of rolling mill housing

Abstract

The utility model relates to the technical field of fastening operation assistance, in particular to an auxiliary tool for fastening a wear-resisting plate of a rolling mill housing, which comprises two cylinders, a plurality of holes horizontally penetrate through the two cylinders, and two holes at the same height on the two cylinders form a movable hole unit. A supporting piece is horizontally inserted into at least one movable hole unit, a hydraulic jack is arranged on at least one column body, and the end of the hydraulic jack in the telescopic direction makes contact with the end of the supporting piece. Displacement of the supporting piece on the column body is controlled through the hydraulic jack, the bolt fastening operation of the wear-resisting plate can be assisted after the wear-resisting plate at an inlet and an outlet of the rolling mill is jacked, the stress condition of the wear-resisting plate at the rolling mill housing in the rolling process is effectively simulated, and the problem that the bolt is easy to loosen after the wear-resisting plate is impacted during production of the rolling mill is solved.

Description

Technical Field

[0001] This utility model relates to the field of fastening operation auxiliary technology, and in particular to an auxiliary tool for fastening wear-resistant plates of rolling mill arches. Background Technology

[0002] During the replacement of the mill support rolls, we discovered that the fixing bolts of the wear-resistant plates in the lower support roll area of ​​the mill frequently loosened. This resulted in improper installation of the wear-resistant plates, dimensional variations between mill stands, and affected the accuracy of the mill equipment, leading to a series of problems such as poor plate shape and support roll misalignment. The main reason for the loosening of the wear-resistant plate bolts is that during the rolling process, the wear-resistant plates of the mill stands are subjected to impacts, causing a decrease in bolt tension, which in turn reduces friction. Under this negative feedback effect, the bolt connections begin to loosen.

[0003] To address the problem of loose bolts securing wear-resistant plates, an auxiliary tool for tightening wear-resistant plates on rolling mill stands has been invented. This tool simulates the stress conditions experienced by the wear-resistant plates during the rolling process, allowing for bolt tightening of the plates under these conditions and resolving the issue of loose bolts during the transition from shutdown to production. Utility Model Content

[0004] To solve the above technical problems, this utility model provides an auxiliary tool for fastening the wear-resistant plate of the rolling mill archway. By controlling the displacement of the support component on the column through hydraulic jack, the stress situation of the wear-resistant plate of the rolling mill archway during the rolling process can be effectively simulated, assisting in the bolt fastening operation of the wear-resistant plate of the rolling mill archway and avoiding the problem that the bolts are easy to loosen after the wear-resistant plate is impacted during rolling mill production.

[0005] The auxiliary tool for fastening the wear-resistant plate of the rolling mill arch proposed in this solution includes two columns, each with multiple horizontal openings. Two openings at the same height on the two columns form a movable hole unit. A support member is horizontally inserted into at least one of the movable hole units, and a hydraulic jack is provided on at least one column. The end of the hydraulic jack in the extension direction contacts the end of the support member.

[0006] The further defined technical solution of this utility model is:

[0007] Furthermore, each of the two columns is provided with a hydraulic jack, and the opposite ends of the two hydraulic jacks are in contact with the two ends of the support member, respectively.

[0008] Furthermore, a support groove for supporting the hydraulic jack is welded onto the side wall of the column.

[0009] Furthermore, the hydraulic jack includes an electro-hydraulic jack.

[0010] Furthermore, the support member includes a square tube or a round tube.

[0011] Furthermore, a base is connected to the bottom of the column.

[0012] Furthermore, both of the aforementioned columns are vertically arranged.

[0013] The beneficial effects of this utility model are as follows: The auxiliary tool for fastening the wear-resistant plate of the rolling mill arch provided by this utility model controls the displacement of the support component on the column through hydraulic jack. It can hold the wear-resistant plate of the rolling mill arch at the inlet and outlet and assist in the bolt fastening operation of the wear-resistant plate of the rolling mill arch. It effectively simulates the stress situation of the wear-resistant plate of the rolling mill arch during the rolling process, avoids the problem of bolts easily loosening after the wear-resistant plate is impacted during rolling mill production, and is conducive to maintaining the dimensional accuracy of the rolling mill arch. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the auxiliary tool for fastening the wear-resistant plate of the rolling mill archway in a specific embodiment of this utility model;

[0015] The components include: 1. base; 2. column; 3. bracket; 4. support; 5. hydraulic jack; 6. wear-resistant plate for the mill inlet and outlet archway; and 7. bolt holes for the wear-resistant plate. Detailed Implementation

[0016] The auxiliary tool for fastening the wear-resistant plate of the rolling mill archway provided in this embodiment has the following cross-sectional view. Figure 1 As shown, both sides have wear-resistant plates 6 for the mill inlet and outlet arches with wear-resistant plate bolt holes 7. The auxiliary tools for fastening the wear-resistant plates of the mill arches are assembled between the two wear-resistant plates 6 for use.

[0017] The auxiliary tool for fastening the wear-resistant plate of the rolling mill archway described in this application includes two vertically arranged columns 2. A base 1 is welded to the bottom of each column 2. Multiple horizontal openings are drilled through each column 2. In this embodiment, four openings are used as an example on each column 2. Two openings at the same height on the two columns 2 form a movable hole unit. A support member 4 is horizontally inserted into one of the movable hole units. Hydraulic jacks 5 are provided on both columns 2, and the opposite ends of the two hydraulic jacks 5 contact the two ends of the support member 4. Multiple slots 3 are welded to the side walls of the columns 2 to support the hydraulic jacks 5. Specifically, the hydraulic jacks 5 are electric hydraulic jacks. The electric hydraulic jacks are respectively located in the grooves 3 on the side walls of the two columns 2. The two ends of the electric hydraulic jacks contact the support 4 and the wear-resistant plates 6 of the mill inlet and outlet archway, respectively. The support 4 and the hydraulic jacks 5 push the two wear-resistant plates 6 of the mill inlet and outlet archway outward to simulate the stress situation of the wear-resistant plates of the mill archway during the rolling process. Under this condition, the wear-resistant plates of the mill archway are bolted and the bolts are installed into the bolt holes 7 of the wear-resistant plates. It can be understood that only one hydraulic jack 5 can be designed. One electric hydraulic jack drives the support 4 to move in the openings of the two columns 2, so that the two ends of the electric hydraulic jack and the support 4 that are far apart from each other press against the two wear-resistant plates 6 of the mill inlet and outlet archway.

[0018] In this embodiment, the support member 4 is specifically a round tube. In some other embodiments, the support member 4 can also be a square tube, as long as it is adapted to the telescopic end of the hydraulic jack 5 so that the telescopic end of the hydraulic jack 5 can be inserted. In this embodiment, a base 1 is made of 500mm long No. 10 channel steel, and a column 2 is made of 1800mm long No. 10 channel steel. Each column 2 has 4 holes with a diameter of 65mm. A support groove 3 is made of 200mm long No. 10 channel steel for placing the hydraulic jack 5. The base 1, column 2, and support groove 3 are connected by welding. Then, a DN50mm steel pipe is placed in the hole of the column 2 to support the hydraulic jack 5.

[0019] In use, the auxiliary tools for fastening the wear-resistant plates of the rolling mill arch are first assembled between the two wear-resistant plates 6 at the inlet and outlet of the rolling mill arch. Then, the two hydraulic jacks 5 are extended, and the two ends of the hydraulic jacks 5 and the support 4, which are far apart from each other, press against the two wear-resistant plates 6 at the inlet and outlet of the rolling mill arch. This can simulate the stress situation of the wear-resistant plates during the rolling process. At this time, the bolts of the wear-resistant plates are fastened and the bolts are installed into the bolt holes 7 of the wear-resistant plates. This can avoid the problem of the bolts of the wear-resistant plates loosening due to the decrease of bolt tension during the rolling process.

[0020] In addition to the above embodiments, the present invention may have other implementation methods; all technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by the present invention.

Claims

1. An auxiliary tool for fastening a mill stand wear plate, characterized in that, Two columns (2) are included, a plurality of openings are horizontally penetrated through the two columns (2), two openings at the same height of the two columns (2) constitute an active hole unit, a support (4) is horizontally inserted in at least one active hole unit, and a hydraulic jack (5) is arranged on at least one column (2), and the end of the telescopic direction of the hydraulic jack (5) is in contact with the end of the support (4).

2. The aid according to claim 1, characterized in that Two columns (2) are included, a plurality of openings are horizontally penetrated through the two columns (2), two openings at the same height of the two columns (2) constitute an active hole unit, a support (4) is horizontally inserted in at least one active hole unit, and a hydraulic jack (5) is arranged on at least one column (2), and the end of the telescopic direction of the hydraulic jack (5) is in contact with the end of the support (4).

3. The aid according to claim 1, characterized in that A supporting groove (3) for bearing the hydraulic jack (5) is welded on the side wall of the column (2).

4. The aid according to claim 1, characterized in that The hydraulic jack (5) comprises an electric hydraulic jack.

5. The aid according to claim 1, characterized in that The support (4) comprises a square tube or a round tube.

6. The aid according to claim 1, characterized in that The bottom of the column (2) is connected with a base (1).

7. The aid according to claim 1, characterized in that The two columns (2) are vertically arranged.

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