Roll changing device of rolling mill

Abstract

The utility model relates to rolling mill maintenance equipment, in particular to a rolling mill roll changing device. Comprising a lifting lug, an L-shaped beam, a shaft head fixing piece and a balance weight, the L-shaped beam is composed of a horizontal beam and a vertical beam. The lifting lug is fixedly connected to the horizontal beam; the counter weight is mounted on the horizontal beam and can move along the horizontal beam so as to adjust the torque; the shaft head fixing piece is installed at the bottom end of the vertical beam and used for fixing the roller head. The roller replacing device is used in cooperation with hoisting equipment, and rapid and safe roller replacing can be achieved.

Description

Technical Field

[0001] The utility model relates to rolling mill maintenance equipment, in particular to a rolling mill roll changing device. Background Art

[0002] A rolling mill is a mechanical device that realizes the metal rolling process. It generally refers to the equipment that completes the entire process of rolled material production, including main equipment, auxiliary equipment, lifting and transportation equipment, and ancillary equipment. A rolling mill usually refers to the main equipment.

[0003] In order to change product varieties and avoid dimensional deviation of rolled materials, rolls must be replaced frequently. For open-frame oblique rolling mills without drum boxes, the upper frame cover can be removed and the rolls can be replaced directly by crane. However, for oblique rolling mills with drum boxes, such as the acid extrusion rolls in the pickling process section of a combined rolling mill, it is not necessary to remove the upper frame cover when replacing the acid extrusion rolls, but the rolls cannot be replaced directly from the top of the frame by crane.

[0004] At present, rollers are usually directly tied and replaced by crane by pulling and tugging. This is not only inefficient, but also poses a major risk of rollers falling and safety hazards. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a rolling mill roll changing device, which can be used in conjunction with a lifting device to achieve fast and safe roll changing.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A rolling mill roll changing device includes a lifting lug, an L-shaped beam, an axle head fixing part and a counterweight; the L-shaped beam is composed of a horizontal beam and a vertical beam; the lifting lug is fixed to the horizontal beam; the counterweight is installed on the horizontal beam and can move along the horizontal beam to adjust the torque; the axle head fixing part is installed at the bottom end of the vertical beam and is used to fix the roll head.

[0008] Furthermore, the lifting ear is provided with a vertical long hole.

[0009] Furthermore, it also includes a reinforcing rib plate, which is fixedly connected to the lifting lug and the horizontal beam.

[0010] Furthermore, the shaft head fixing piece is a chuck.

[0011] Furthermore, the counterweight includes a chassis, a running wheel and a motor; the horizontal beam is provided with a track corresponding to the running wheel, the running wheel is installed on the track, the motor is connected to the running wheel, and the motor drives the running wheel to roll along the track.

[0012] Compared with the prior art, the utility model has at least the following technical effects or advantages:

[0013] 1. The utility model is composed of a lifting lug, an L-shaped beam, an axle head fixing piece and a counterweight. The L-shaped beam is composed of a horizontal beam and a vertical beam. The lifting lug is fixedly connected to the horizontal beam, and the counterweight is installed on the horizontal beam and can move along the horizontal beam. The lifting lug is used to be connected to the lifting equipment, and the axle head fixing piece is used to fix the roller head of the roller. The L-shaped beam realizes horizontal dragging, and the counterweight can move along the horizontal beam, thereby adjusting the torque of the counterweight to adapt to rollers of different diameters, lengths and weights.

[0014] The utility model discloses to avoid crooked pulling and slanting, greatly facilitates the roller changing operation, improves the roller changing efficiency, shortens the roller changing time, realizes the rapid roller changing, is simple to operate, and reduces the labor intensity of workers.

[0015] 2. The shaft head fixing part of the utility model is a chuck, which can adapt to the roller heads of rollers with different diameters.

[0016] 3. A reinforcing rib plate is provided at the connection between the lifting eye and the horizontal beam of the utility model, thereby improving the overall strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic front view of the structure of the utility model.

[0018] Figure 2 It is a schematic side view of the structure of the utility model.

[0019] In the figure:

[0020] 1-lifting ear 11-long hole 12-reinforcement rib 2-L-beam 21-horizontal beam 22-vertical beam 3-shaft head fixing 4-counterweight 41-chassis 42-traveling wheel 43-motor 5-acid extrusion roller DETAILED DESCRIPTION

[0021] The embodiments of the present invention are described in detail below. In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described in combination with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the description of the utility model, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the utility model. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0026] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0027] [Example]

[0028] like Figure 1 , Figure 2 As shown, a rolling mill roll changing device includes a lifting lug 1, an L-shaped beam 2, an axle head fixing part 3 and a counterweight 4.

[0029] The L-shaped beam 2 is composed of a horizontal beam 21 and a vertical beam 22 . The horizontal beam 21 is arranged horizontally, and the vertical beam 22 is arranged vertically and perpendicular to the left end of the horizontal beam 21 . The intersection of the horizontal beam 21 and the vertical beam 22 is rounded.

[0030] The lifting lug 1 is fixedly connected to the upper surface of the right part of the horizontal beam 21, and the lifting lug 1 is provided with a vertical long hole 11. A reinforcing rib 12 is provided at the connection between the lifting lug 1 and the horizontal beam 21, and the reinforcing rib 12 is provided at the stress point, thereby improving the overall strength.

[0031] The shaft head fixing part 3 is installed at the bottom end of the vertical beam and is used to fix the roller head. The shaft head fixing part 3 adopts a chuck. The chuck is an existing product and is a mechanical device used to clamp the workpiece on the machine tool. It is a machine tool accessory that clamps and positions the workpiece by radial movement of the movable claws evenly distributed on the chuck body. The chuck can clamp and fix shaft heads of different diameters and can adapt to roller heads of different diameters.

[0032] The counterweight 4 includes a chassis 41, a running wheel 42 and a motor 43. The chassis 41 is rectangular, the rotating shaft is mounted on the chassis 41 through a bearing and a bearing seat, and the running wheel 42 is mounted on the rotating shaft. The horizontal beam 21 is provided with an I-shaped track corresponding to the running wheel 42, and the running wheel 42 is mounted on the track. The motor 43 is connected to the rotating shaft, driving the rotating shaft to rotate, thereby driving the running wheel 42 to rotate, and driving the running wheel 42 to move along the track. The motor 43 is preferably a motor equipped with a remote control.

[0033] The working principle and working process of the utility model are as follows:

[0034] The device is connected to the lifting equipment through the lifting lug 1, and the roller head of the left end of the acid squeezing roller 5 is clamped and fixed by the shaft head fixing piece 3. The counterweight 4 travels on the track of the horizontal beam 21, and then the torque of the counterweight 4 is adjusted, which is beneficial to the balance of force, stabilizes the center of gravity, and avoids tilting. With the cooperation of the lifting equipment, the acid squeezing roller 5 can be pulled out straight and steadily.

[0035] The utility model discloses to avoid crooked pulling and slanting, greatly facilitates the roller changing operation, improves the roller changing efficiency, shortens the roller changing time, realizes the rapid roller changing, is simple to operate, and reduces the labor intensity of workers.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rolling mill roll changing device, characterized in that: It includes lifting lugs, L-shaped beams, shaft head fixings and counterweights; The L-shaped beam is composed of a horizontal beam and a vertical beam; The lifting lug is fixedly connected to the horizontal beam; The counterweight is mounted on the horizontal beam and can move along the horizontal beam to adjust the moment; The shaft head fixing piece is installed at the bottom end of the vertical beam and is used to fix the roller head.

2. A rolling mill roll changing device according to claim 1, characterized in that: The lifting ear is provided with a vertical long hole.

3. A rolling mill roll changing device according to claim 1, characterized in that: It also includes a reinforcing rib plate, which is fixedly connected to the lifting lug and the horizontal beam.

4. A rolling mill roll changing device according to claim 1, characterized in that: The shaft head fixing piece is a chuck.

5. The rolling mill roll changing device according to claim 1, characterized in that: The counterweight includes a chassis, a running wheel and a motor; the horizontal beam is provided with a track corresponding to the running wheel, the running wheel is installed on the track, the motor is connected to the running wheel, and the motor drives the running wheel to roll along the track.

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