A pressing connection device for a roughing mill

Abstract

This utility model relates to the field of mechanical equipment technology, and provides a pressing connection device for a roughing mill, including a pressing screw, a thrust block, a first bushing assembly, a second bushing assembly, a first stop half-ring, and a second stop half-ring. The thrust block is fixedly installed on the bottom surface of the pressing screw. The first bushing assembly and the second bushing assembly are both semi-circular ring structures and can form a circular ring structure of fixed bushings. The fixed bushings are coaxially sleeved on the outside of the pressing screw, with the inner side of the fixed bushings fitting against the side of the pressing screw, and the bottom surface of the fixed bushings fitting against the top surface of the thrust block. The first stop half-ring and the second stop half-ring are both semi-circular ring structures and can form a circular ring structure of stop rings. The stop rings are coaxially sleeved on the outside of the fixed bushings. In this utility model, if the thrust block falls off the bottom surface of the pressing screw, the construction personnel do not need to continuously lift the stop rings and fixed bushings before the thrust block is installed, which saves manpower and reduces the danger of construction.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment technology, and more specifically, to a pressing connection device for a roughing mill. Background Technology

[0002] When performing roll changing operations on existing roughing mill units, there is a risk that all four M16*80 bolts between the lead screw and the thrust block may be sheared off. If all four M16*80 bolts are sheared off, the retaining ring and fixing bushing must first be sequentially fitted onto the lead screw before the thrust block is fixedly installed on the bottom surface of the lead screw. Due to the difficult installation position of the retaining ring and fixing bushing, it is impossible to use mechanical equipment to lift them. Therefore, before the thrust block is installed, the retaining ring and fixing bushing must be continuously lifted manually. The retaining ring and fixing bushing weigh approximately 65 kg, and the workers need to lift them from a height of 3 meters above the ground, which is not only wasteful of manpower but also extremely dangerous. Utility Model Content

[0003] In response to the aforementioned technical problem, a pressing connection device for a roughing mill is provided.

[0004] The technical means adopted in this utility model are as follows:

[0005] A pressing connection device for a roughing mill includes a pressing screw, a thrust block, a first bushing assembly, a second bushing assembly, a first stop half-ring, and a second stop half-ring. The axial direction of the pressing screw is consistent with the vertical direction. The thrust block is fixedly installed on the bottom surface of the pressing screw. The first bushing assembly and the second bushing assembly are both semi-circular ring structures and can form a circular ring structure of a fixed bushing. The fixed bushing is coaxially sleeved on the outside of the pressing screw, the inner side of the fixed bushing is in contact with the side of the pressing screw, and the bottom surface of the fixed bushing is in contact with the top surface of the thrust block. The first stop half-ring and the second stop half-ring are both semi-circular ring structures and can form a circular ring structure of a stop ring. The stop ring is coaxially sleeved on the outside of the fixed bushing.

[0006] Furthermore, a first protrusion of a semi-circular ring structure is fixedly installed on the outer surface of the first bushing assembly along its circumferential direction, and a second protrusion of a semi-circular ring structure is fixedly installed on the outer surface of the second bushing assembly along its circumferential direction. The first protrusion and the second protrusion can form a first stop protrusion of a circular ring structure, and the outer diameter of the first stop protrusion is equal to the inner diameter of the stop ring. A third protrusion of a semi-circular ring structure is fixedly installed on the outer surface of the first stop semi-ring along its circumferential direction, and a fourth protrusion of a semi-circular ring structure is fixedly installed on the outer surface of the second stop semi-ring along its circumferential direction. The third protrusion and the fourth protrusion can form a second stop protrusion of a circular ring structure, and the inner diameter of the second stop protrusion is equal to the outer diameter of the fixed bushing. The top surface of the first stop protrusion is in contact with the bottom surface of the second stop protrusion.

[0007] Furthermore, the bottom surface of the pressing screw is provided with a plurality of first fixing screw holes, and the thrust block is provided with a plurality of second fixing screw holes, the second fixing screw holes corresponding one-to-one with the first fixing screw holes; it also includes a plurality of fixing bolts, the fixing bolts corresponding one-to-one with the second fixing screw holes, and the fixing bolts are threaded into the corresponding first fixing screw holes and second fixing screw holes.

[0008] Furthermore, the specifications of the first fixing screw hole, the second fixing screw hole, and the fixing bolt are all M24.

[0009] Furthermore, a limiting groove is formed on the bottom surface of the pressing screw, and a limiting block is fixedly installed on the top surface of the thrust block; the limiting block is installed in the limiting groove in a shape that is adapted to the shape of the limiting block.

[0010] Furthermore, the stop ring has several mounting screw holes along its circumferential direction.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. In this utility model, if the thrust block falls off the bottom surface of the pressing screw, the thrust block can be fixedly installed on the bottom surface of the pressing screw first, and then the stop ring can be disassembled into the first stop half ring and the second stop half ring, and the fixing bushing can be disassembled into the first bushing assembly and the second bushing assembly. Then the stop ring and the fixing bushing can be fastened to the outside of the pressing screw from both sides. It is not necessary for the construction personnel to continuously lift the stop ring and the fixing bushing before the thrust block is installed. This not only saves manpower, but also greatly reduces the danger of construction.

[0013] 2. In this utility model, the top surface of the first stop protrusion, which is composed of the first protrusion and the second protrusion, is in contact with the bottom surface of the second stop protrusion, which is composed of the third protrusion and the fourth protrusion, so that the stop ring will not fall off the fixed bushing.

[0014] 3. In this utility model, by simultaneously threading the fixing bolts into the corresponding first fixing screw hole and second fixing screw hole, the thrust block can be fixedly installed on the bottom surface of the pressing screw.

[0015] 4. In this utility model, the first fixing screw hole, the second fixing screw hole, and the fixing bolt are all M24. Compared with the M16*80 bolts used in the prior art, the fixing bolts in this utility model have a larger diameter and are less likely to be sheared. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is an overall structural diagram of a pressing connection device for a roughing mill unit according to the present invention;

[0018] Figure 2 This is an overall structural diagram of the lead screw in this utility model;

[0019] Figure 3 This is a bottom view of the lead screw in this utility model;

[0020] Figure 4 This is an overall structural diagram of the thrust block in this utility model;

[0021] Figure 5 This is a top view of the fixed bushing in this utility model;

[0022] Figure 6 This is a top view of the retaining ring in this utility model;

[0023] Reference numerals in the attached drawings: 1-Pressing screw; 2-Fixing bushing; 3-Stop ring; 4-Thrust block; 5-Limiting groove; 6-First fixing screw hole; 7-Mounting screw hole; 8-Second fixing screw hole; 9-Limiting block; 201-First bushing assembly; 202-Second bushing assembly; 203-First protrusion; 204-Second protrusion; 301-First stop half-ring; 302-Second stop half-ring. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Example 1:

[0026] like Figures 1 to 6 As shown, a pressing connection device for a roughing mill includes a pressing screw 1, a thrust block 4, a first bushing assembly 201, a second bushing assembly 202, a first stop half-ring 301, and a second stop half-ring 302. The axial direction of the pressing screw 1 is consistent with the vertical direction. The thrust block 4 is fixedly installed on the bottom surface of the pressing screw 1. The first bushing assembly 201 and the second bushing assembly 202 are both semi-circular ring structures and can form a fixed bushing 2 with a circular ring structure. The fixed bushing 2 is coaxially sleeved outside the pressing screw 1. The inner side of the fixed bushing 2 is in contact with the side of the pressing screw 1, and the bottom surface of the fixed bushing 2 is in contact with the top surface of the thrust block 4. The first stop half-ring 301 and the second stop half-ring 302 are both semi-circular ring structures and can form a stop ring 3 with a circular ring structure. The stop ring 3 is coaxially sleeved outside the fixed bushing 2.

[0027] In this embodiment, a first protrusion 203 of a semi-circular ring structure is fixedly installed on the outer surface of the first bushing assembly 201 along its circumferential direction, and a second protrusion 204 of a semi-circular ring structure is fixedly installed on the outer surface of the second bushing assembly 202 along its circumferential direction. The first protrusion 203 and the second protrusion 204 can form a first stop protrusion of a circular ring structure. The outer diameter of the first stop protrusion is equal to the inner diameter of the stop ring 3. A third protrusion of a semi-circular ring structure is fixedly installed on the outer surface of the first stop semi-ring 301 along its circumferential direction, and a fourth protrusion of a semi-circular ring structure is fixedly installed on the outer surface of the second stop semi-ring 302 along its circumferential direction. The third protrusion and the fourth protrusion can form a second stop protrusion of a circular ring structure. The inner diameter of the second stop protrusion is equal to the outer diameter of the fixed bushing 2. The top surface of the first stop protrusion is in contact with the bottom surface of the second stop protrusion.

[0028] In this embodiment, a plurality of first fixing screw holes 6 are provided on the bottom surface of the pressing screw 1, and a plurality of second fixing screw holes 8 are provided on the thrust block 4. The second fixing screw holes 8 correspond one-to-one with the first fixing screw holes 6. It also includes a plurality of fixing bolts, the fixing bolts correspond one-to-one with the second fixing screw holes 8, and the fixing bolts are threaded into the corresponding first fixing screw holes 6 and second fixing screw holes 8.

[0029] Specifically, four first fixing screw holes 6 are provided on the bottom surface of the pressing screw 1 along its circumferential direction, four second fixing screw holes 8 are provided on the thrust block 4 along its circumferential direction, and four fixing bolts are provided.

[0030] In this embodiment, the first fixing screw hole 6, the second fixing screw hole 8, and the fixing bolt are all M24.

[0031] In this embodiment, a limiting groove 5 is formed on the bottom surface of the pressing screw 1, and a limiting block 9 is fixedly installed on the top surface of the thrust block 4; the limiting block 9 is installed in the limiting groove 5 in a shape that is adapted to the shape.

[0032] Specifically, the limiting groove 5 is a strip-shaped structure and its length direction is consistent with the radial direction of the pressing screw 1, and the limiting block 9 is a strip-shaped structure and its length direction is consistent with the radial direction of the thrust block 4.

[0033] In this embodiment, the stop ring 3 has a plurality of mounting screw holes 7 along its circumferential direction.

[0034] Specifically, the mounting screw holes 7 are provided with twelve holes.

[0035] In addition, the stop ring 3 has two lifting holes along its circumferential direction.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A screwdown connection device for a roughing mill train, characterized by, It includes a screw rod (1), a thrust block (4), a first bushing assembly (201), a second bushing assembly (202), a first stop half ring (301), and a second stop half ring (302); The axial direction of the pressing screw (1) is consistent with the vertical direction; The thrust block (4) is fixedly installed on the bottom surface of the screw rod (1); The first bushing assembly (201) and the second bushing assembly (202) are both semi-circular ring structures and can form a fixed bushing (2) with a circular ring structure. The fixed bushing (2) is coaxially sleeved on the outside of the pressing screw (1). The inner side of the fixed bushing (2) is in contact with the side of the pressing screw (1). The bottom surface of the fixed bushing (2) is in contact with the top surface of the thrust block (4). The first stop half ring (301) and the second stop half ring (302) are both semi-circular ring structures and can form a stop ring (3) with a circular ring structure. The stop ring (3) is coaxially sleeved outside the fixed bushing (2).

2. A screwdown connection device for a roughing mill train according to claim 1, characterized in that, A first protrusion (203) of a semi-circular structure is fixedly installed on the outer side of the first bushing assembly (201) along its circumferential direction, and a second protrusion (204) of a semi-circular structure is fixedly installed on the outer side of the second bushing assembly (202) along its circumferential direction. The first protrusion (203) and the second protrusion (204) can form a first stop protrusion of a circular structure. The outer diameter of the first stop protrusion is equal to the inner diameter of the stop ring (3). The first stop half ring (301) has a third protrusion of a semi-circular ring structure fixedly installed on its outer side along its circumferential direction, and the second stop half ring (302) has a fourth protrusion of a semi-circular ring structure fixedly installed on its outer side along its circumferential direction. The third protrusion and the fourth protrusion can form a second stop protrusion of a circular ring structure. The inner diameter of the second stop protrusion is equal to the outer diameter of the fixed bushing (2). The top surface of the first stop protrusion is in contact with the bottom surface of the second stop protrusion.

3. The press-down connecting device for a rough rolling train according to claim 1, characterized in that, The bottom surface of the pressing screw (1) is provided with a plurality of first fixing screw holes (6), and the thrust block (4) is provided with a plurality of second fixing screw holes (8), the second fixing screw holes (8) and the first fixing screw holes (6) are corresponding one to one; It also includes several fixing bolts, each of which corresponds to a second fixing screw hole (8). The fixing bolts are threaded into the corresponding first fixing screw hole (6) and second fixing screw hole (8).

4. A screwdown connection device for a roughing mill train according to claim 3, characterized in that The first fixing screw hole (6), the second fixing screw hole (8), and the fixing bolt are all M24.

5. The press-down connecting device for a rough rolling train according to claim 1, wherein A limiting groove (5) is provided on the bottom surface of the pressing screw (1), and a limiting block (9) is fixedly installed on the top surface of the thrust block (4). The limiting block (9) is fitted into the limiting groove (5) in a shape that fits the shape.

6. The pressing connection device for a roughing mill according to claim 1, characterized in that, The stop ring (3) has several mounting screw holes (7) along its circumferential direction.

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