A flat head cover for universal joint shaft of rolling mill

Abstract

The present invention discloses a novel flat head sleeve for universal joint of rolling mill, which belongs to the field of metallurgical rolling technology. The present invention comprises a flat head sleeve body, wherein an inner hole is provided at the center of the flat head sleeve body, a flat head sleeve transmission plane is provided on the inner side surface of the inner hole, a dovetail groove is provided in the middle of the flat head sleeve transmission plane, and a self-positioning wear-resistant plate is installed on the surface of the flat head sleeve transmission plane; the self-positioning wear-resistant plate is composed of a wear-resistant base plate, a toothed strong magnet, an adjusting screw, and a positioning iron block, a base plate dovetail is installed in the middle of the wear-resistant base plate, an adjusting screw is provided on the surface of the wear-resistant base plate, one end of the adjusting screw is connected to a positioning iron block, and a toothed strong magnet is provided on one side of the positioning iron block in sequence. The present invention has a novel structure and can greatly improve the working efficiency. The self-positioning wear-resistant plate is doubly fixed by the base plate dovetail and the adjusting screw, and is magnetically positioned under the action of the toothed strong magnet, so the positioning is accurate and the service life is long.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgical rolling, and more specifically to a flat head sleeve of a universal joint shaft of a rolling mill. Background Art

[0002] Main drive universal joints are widely used in the field of metallurgical rolling. Flat head sleeves are one of the key components for connecting the rollers and the universal joints. They are mainly used to transmit the interaction and torque between the main drive universal joints and the rollers. During the rolling process, in order to obtain a very accurate rolling shape, the roller grooves will have a certain degree of wear and deformation after a period of rolling, and the rollers or roller grooves need to be replaced to meet the size requirements. The connection between the rollers and the universal joints is achieved using flat head sleeves. The flat head of the roller and the flat head sleeve of the universal joint match very accurately. Due to the needs of roller assembly, the matching form of the inner hole of the flat head sleeve and the flat head of the roller is mostly clearance fit or transition fit on the arc-shaped working surface and the plane. When the main transmission universal joint drives the rollers to perform rolling operations, the first thing that is prone to wear is the flat working surface; at the same time, because the flat head has no axial positioning device in the flat head sleeve, the arc working surface of the flat head sleeve and the flat head will gradually produce relative sliding along the axial direction of the main transmission shaft; therefore, a wear gap is gradually formed between the flat head and the working surface of the inner hole of the flat head sleeve No. 2. Due to the reduction of the actual working area caused by wear, the gap between the inner hole plane of the flat head sleeve and the flat head working surface gradually expands, and the gap impact generated during operation becomes larger and larger, causing the amplitude of the main transmission torsional vibration to gradually increase, thereby accelerating the wear between the flat head sleeve and the flat head. Such a vicious cycle has become one of the main causes of fatigue failure of the main transmission components of the roller, and will have an adverse effect on the quality control of rolled products. Summary of the invention

[0003] 1. Technical problem to be solved by the invention

[0004] In view of the defects and shortcomings of the prior art, the present invention provides a flat head sleeve of a universal joint shaft of a rolling mill. The present invention has a novel structure, compact and reasonable configuration, easy operation, can greatly improve operating efficiency, and is beneficial to reducing the production cost of the enterprise. The self-positioning wear-resistant plate is doubly fixed by the base plate dovetail and the adjusting screw, and is magnetically positioned under the action of a toothed strong magnet, so the positioning is accurate and the service life is long.

[0005] 2. Technical solution

[0006] In order to achieve the above object, the technical solution provided by the present invention is:

[0007] A rolling mill universal joint flat head sleeve of the present invention comprises a flat head sleeve body, one side of the flat head sleeve body is provided with bolt holes at intervals, the other side of the flat head sleeve body is provided with a flat head sleeve arc surface, an inner hole is provided at the center of the flat head sleeve body, a flat head sleeve transmission plane is provided on the inner side surface of the inner hole, a dovetail groove is provided in the middle of the flat head sleeve transmission plane, a plurality of groups of positioning holes with the same aperture are provided at intervals on the surface of the flat head sleeve transmission plane, and a self-positioning wear-resistant plate is installed on the surface of the flat head sleeve transmission plane;

[0008] The self-positioning wear-resistant plate is composed of a wear-resistant base plate, a toothed strong magnet, an adjusting screw, a positioning iron block, a rubber ring, a silicone gasket and a base plate dovetail. The wear-resistant base plate fits together with the flat head cover transmission plane, and a base plate dovetail is installed in the middle of the wear-resistant base plate. Mounting holes are arranged at intervals on the surface of the wear-resistant base plate, and an adjusting screw is arranged in the mounting hole. One end of the adjusting screw passes through the mounting hole and is connected to the positioning iron block, and the positioning iron block is threadedly connected to the adjusting screw. A rubber ring and a toothed strong magnet are arranged on one side of the positioning iron block in sequence, and the rubber ring is arranged between the positioning iron block and the toothed strong magnet. The positioning iron block and the toothed strong magnet are magnetically attracted to each other, and the rubber ring is fixedly mounted on the surface of the positioning iron block, and the toothed strong magnet is fixedly clamped on the inner side of the positioning hole. The surface of the toothed strong magnet is fixedly bonded with a silicone gasket, and the other side of the silicone gasket is fixedly bonded to the inside of the positioning hole.

[0009] Furthermore, the shape of the dovetail of the substrate is complementary to the shape of the dovetail groove, and the wear-resistant substrate is clamped in the dovetail groove through the dovetail of the substrate.

[0010] Furthermore, the outer ring of the tooth-shaped strong magnet is provided with sawtooth clamping pieces at intervals, and the tooth-shaped strong magnet is fixedly embedded in the positioning hole.

[0011] Furthermore, one end of the adjusting screw rod sequentially passes through the wear-resistant base plate, the positioning iron block, the toothed strong magnet and is threadedly connected to the flat head cover body.

[0012] Furthermore, the self-positioning wear-resistant plate is detachably assembled with the flat head cover body through an adjusting screw.

[0013] Furthermore, two sides of the rubber ring are seamlessly fitted with the positioning iron block and the tooth-shaped strong magnet respectively.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0016] The present invention has a novel structure, compact and reasonable configuration, easy operation, can greatly improve work efficiency, and is beneficial to reducing enterprise production costs. The self-positioning wear-resistant plate is doubly fixed by the base plate dovetail and the adjusting screw, and is magnetically positioned under the action of the toothed strong magnet. The positioning is accurate, the flat head cover has a strong ability to transmit torque, and has a long service life. Theoretically, the flat head cover body can be used an unlimited number of times. When the flat head cover body and the flat head of the roller are worn to produce a gap, the self-positioning wear-resistant plate can be replaced in a targeted manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the present invention;

[0018] Figure 2 is a side view of the present invention;

[0019] Figure 3 This is a diagram showing the installation effect of the self-positioning wear-resistant plate of the present invention;

[0020] Figure 4 It is a planar structural diagram of the flat headgear transmission of the present invention;

[0021] Figure 5 It is a local structural connection effect diagram of the present invention;

[0022] Figure 6 It is a partial structural decomposition effect diagram of the present invention.

[0023] In the figure: 1. Flat head cover body; 11. Bolt hole; 12. Flat head cover arc surface; 13. Inner hole; 14. Flat head cover transmission plane; 15. Positioning hole; 16. Dovetail groove; 2. Self-positioning wear-resistant plate; 21. Wear-resistant base plate; 22. Toothed strong magnet; 221. Serrated clamping piece; 23. Adjusting screw; 24. Positioning iron block; 25. Rubber ring; 26. Silicone gasket; 27. Base plate dovetail. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0025] Example 1

[0026] from Figure 1-6 It can be seen that a flat head sleeve of a rolling mill universal joint shaft in this embodiment includes a flat head sleeve body 1, one side of the flat head sleeve body 1 is provided with bolt holes 11 at intervals, the other side of the flat head sleeve body 1 is provided with a flat head sleeve arc surface 12, an inner hole 13 is provided at the center of the flat head sleeve body 1, the inner side surface of the inner hole 13 is provided with a flat head sleeve transmission plane 14, a dovetail groove 16 is provided in the middle of the flat head sleeve transmission plane 14, a plurality of groups of positioning holes 15 with the same aperture are provided at intervals on the surface of the flat head sleeve transmission plane 14, and a self-positioning wear-resistant plate 2 is installed on the surface of the flat head sleeve transmission plane 14.

[0027] The self-positioning wear-resistant plate 2 is composed of a wear-resistant base plate 21, a toothed strong magnet 22, an adjusting screw 23, a positioning iron block 24, a rubber ring 25, a silicone gasket 26 and a base plate dovetail 27. The wear-resistant base plate 21 fits with the flat head cover transmission plane 14. When the gap between the flat head of the roller and the flat head cover body 1 is too large or small, a wear-resistant base plate 21 with a suitable thickness can be used. A base plate dovetail 27 is installed in the middle of the wear-resistant base plate 21. The shape of the base plate dovetail 27 is complementary to the shape of the dovetail groove 16. The wear-resistant base plate 21 is clamped in the dovetail groove 16 through the base plate dovetail 27, which increases The contact area between the wear-resistant base plate 21 and the flat head cover body 1 is large, so that the wear-resistant base plate 21 is prevented from loosening during operation, and the use strength and service life of the overall component are effectively improved. The surface of the wear-resistant base plate 21 is provided with mounting holes at intervals, and an adjusting screw 23 is arranged in the mounting hole. One end of the adjusting screw 23 passes through the mounting hole and is connected with a positioning iron block 24. The positioning iron block 24 is threadedly connected to the adjusting screw 23. A rubber ring 25 and a tooth-shaped strong magnet 22 are arranged on one side of the positioning iron block 24 in sequence. The rubber ring 25 is arranged between the positioning iron block 24 and the tooth-shaped strong magnet 22. When the self-positioning wear-resistant plate 2 is installed, the two sides of the rubber ring 25 are seamlessly fitted with the positioning iron block 24 and the tooth-shaped strong magnet 22 respectively. The rubber ring 25 can reduce the friction between the positioning iron block 24 and the tooth-shaped strong magnet 22 to avoid damage due to friction. The positioning iron block 24 and the tooth-shaped strong magnet 22 are magnetically attracted to each other. The rubber ring 25 is fixedly mounted on the surface of the positioning iron block 24. The tooth-shaped strong magnet 22 is fixedly clamped on the inner side of the positioning hole 15. The outer ring of the tooth-shaped strong magnet 22 is spaced apart with serrated clamping pieces 221. The tooth-shaped strong magnet 22 is fixedly embedded in In the positioning hole 15, the serrated clamping piece 221 enables the tooth-shaped strong magnet 22 to be clamped in the positioning hole 15, so that the flat head cover body 1 and the tooth-shaped strong magnet 22 form a whole with higher strength. The surface of the tooth-shaped strong magnet 22 is fixedly bonded with a silicone gasket 26, and the other side of the silicone gasket 26 is fixedly bonded to the inside of the positioning hole 15. One end of the adjusting screw 23 passes through the wear-resistant base plate 21, the positioning iron block 24, and the tooth-shaped strong magnet 22 in sequence and is threadedly connected to the flat head cover body 1. The self-positioning wear-resistant plate 2 is detachably assembled with the flat head cover body 1 through the adjusting screw 23.

[0028] After the wear-resistant base plate 21 is positioned, the adjusting screw 23 is tightened. At this time, the positioning iron block 24 and the tooth-shaped strong magnet 22 are magnetically attracted to each other, and the magnetic attraction force can be maintained for a while after installation, thereby enhancing the connection strength.

[0029] The present invention has a novel structure, compact and reasonable configuration, easy operation, can greatly improve work efficiency, and is beneficial to reducing enterprise production costs. The self-positioning wear-resistant plate 2 is doubly fixed by the base plate dovetail 27 and the adjusting screw 23, and is magnetically positioned under the action of the toothed strong magnet 22. The positioning is accurate, the flat head cover has a strong ability to transmit torque, and has a long service life. Theoretically, the flat head cover body 1 can be used an unlimited number of times. When the flat head cover body 1 and the flat head of the roller are worn to produce a gap, the self-positioning wear-resistant plate 2 can be replaced in a targeted manner.

[0030] The appearance size of the flat head cover body 1 is basically consistent with the original size, and the internal self-positioning wear-resistant plate 2 is set in a mirror image. When the flat head cover body 1 transmits torque to the roller, the surface of the self-positioning wear-resistant plate 2 is first worn. When the gap between the wear-resistant plate and the flat head of the roller increases, the gap between them can be eliminated by replacing the wear-resistant plate online, and the service life can basically be unlimited. At the same time, the scrapped flat head cover body 1 can be reused by reprocessing the transmission plane and adding the self-positioning wear-resistant plate 2. The present invention is easy to replace and can greatly improve the working efficiency.

[0031] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims

1. A rolling mill universal joint flat head sleeve, comprising a flat head sleeve body (1), characterized in that: Bolt holes (11) are provided at intervals on one side of the flat head cover body (1), a flat head cover arc surface (12) is provided on the other side of the flat head cover body (1), an inner hole (13) is provided at the center of the flat head cover body (1), a flat head cover transmission plane (14) is provided on the inner side surface of the inner hole (13), a dovetail groove (16) is provided in the middle of the flat head cover transmission plane (14), a plurality of groups of positioning holes (15) with the same aperture are provided at intervals on the surface of the flat head cover transmission plane (14), and a self-positioning wear-resistant plate (2) is installed on the surface of the flat head cover transmission plane (14); The self-positioning wear-resistant plate (2) is composed of a wear-resistant base plate (21), a toothed strong magnet (22), an adjusting screw (23), a positioning iron block (24), a rubber ring (25), a silicone gasket (26) and a base plate dovetail (27). The wear-resistant base plate (21) and the flat head cover transmission plane (14) are mutually fitted, and a base plate dovetail (27) is installed in the middle of the wear-resistant base plate (21). The surface of the wear-resistant base plate (21) is provided with mounting holes at intervals, and an adjusting screw (23) is arranged in the mounting hole. One end of the adjusting screw (23) passes through the mounting hole and is connected to the positioning iron block (24). The positioning iron block (24) and the adjusting screw (23) are connected to each other. The screw rod (23) is threadedly connected, and a rubber ring (25) and a tooth-shaped strong magnet (22) are sequentially arranged on one side of the positioning iron block (24), the rubber ring (25) is arranged between the positioning iron block (24) and the tooth-shaped strong magnet (22), the positioning iron block (24) and the tooth-shaped strong magnet (22) are magnetically attracted to each other, the rubber ring (25) is fixedly mounted on the surface of the positioning iron block (24), the tooth-shaped strong magnet (22) is fixedly clamped on the inner side of the positioning hole (15), a silicone gasket (26) is fixedly bonded to the surface of the tooth-shaped strong magnet (22), and the other side of the silicone gasket (26) is fixedly bonded to the inside of the positioning hole (15); The shape of the base plate dovetail (27) is complementary to the shape of the dovetail groove (16), and the wear-resistant base plate (21) is clamped in the dovetail groove (16) through the base plate dovetail (27); The outer ring of the toothed strong magnet (22) is provided with sawtooth clamping pieces (221) at intervals, and the toothed strong magnet (22) is fixedly embedded in the positioning hole (15); One end of the adjusting screw rod (23) passes through the wear-resistant base plate (21), the positioning iron block (24), the toothed strong magnet (22) in sequence and is threadedly connected to the flat head cover body (1).

2. A rolling mill universal joint flat head sleeve according to claim 1, characterized in that: The self-positioning wear-resistant plate (2) is detachably assembled with the flat head cover body (1) via an adjusting screw rod (23).

3. The rolling mill universal joint flat head sleeve according to claim 1, characterized in that: The two sides of the rubber ring (25) are seamlessly fitted with the positioning iron block (24) and the tooth-shaped strong magnet (22) respectively.

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