Finishing mill guide and guard device

Abstract

The utility model discloses a finishing mill guide and guard device which comprises a base, two guide frames, a guide wheel and a lining, the base is arranged at an inlet of a finishing mill, the two guide frames are arranged on the base in a sliding mode, the guide wheel is arranged on the guide frames in a rotating mode, and the lining is arranged on the guide wheel in a sleeved mode. A plurality of fixing grooves are evenly and vertically formed in the guide wheel in the circumferential direction, a plurality of fixing strips are fixedly arranged on the inner wall of the lining and clamped in the fixing grooves, a certain gap is reserved between the lining and the guide wheel, and a plurality of cooling fins are arranged between the lining and the guide wheel. According to the guide wheel, when the guide wheel guides steel, the steel is in contact with the lining, friction of the steel to the guide wheel can be avoided, the lining is easy and convenient to replace after the lining is damaged, the cooling fins are arranged between the lining and the guide wheel, heat can be dissipated in time, and damage to the guide wheel due to the fact that heat is conducted to the guide wheel is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of guide devices, in particular to a guide device for a finishing mill. Background Art

[0002] Steel rolling is a pressure processing process that changes the shape of steel ingots and billets between rotating rollers. Steel rolling is done to obtain the required shape on the one hand and to improve the internal quality of the steel on the other hand. When rolling steel, the billet is first sent to a heating furnace for heating, then sent to a primary rolling mill for repeated rolling, and finally sent to a finishing mill for finishing rolling to obtain the required steel. Before entering the finishing mill, the steel needs to be guided so that the steel can accurately enter the entrance of the finishing mill. The guiding device is generally guided by multiple sets of guide rollers. The guide rollers guide the steel in a limited position. Long-term contact and friction between the steel and the guide rollers will cause damage to the guide rollers, and the temperature of the steel is relatively high. After contact with the guide rollers, the bearing temperature of the guide rollers is easily increased. After long-term work, the guide rollers and bearings are damaged and need to be replaced, but the guide rollers are heavy and the bearings are tightly installed on the mounting shaft, which makes the replacement process complicated and inconvenient. Replacement is more difficult, which will increase labor intensity and affect production efficiency. Utility Model Content

[0003] The utility model aims to provide a finishing mill guide device in view of the above-mentioned deficiencies in the prior art.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is:

[0005] A finishing mill guide device comprises a base, which is arranged at the entrance of the finishing mill;

[0006] There are two guide frames, which are slidably arranged on the base;

[0007] A guide wheel is rotatably arranged on the guide frame;

[0008] A bushing, sleeved on the guide wheel;

[0009] A fixing groove is arranged on the surface of the guide wheel along the circumferential direction;

[0010] The fixing strip is fixedly arranged on the inner wall of the bushing and clamped in the fixing groove.

[0011] Preferably, the guide frame includes a lower support rod, a connecting rod and a clamping rod, the lower support rod is slidably arranged on the base, two connecting rods are provided, and the two connecting rods are fixedly arranged at both ends of the lower support rod, the clamping rod is detachably fixedly connected to the connecting rod, the connecting rod and the lower support rod are arranged in parallel, and the guide wheel is rotatably arranged between the connecting rod and the lower support rod.

[0012] Preferably, the pressing rod and the connecting rod are fixedly connected by bolts.

[0013] Preferably, a lead screw is rotatably provided on the base, and the lower support rod is threadably connected to the lead screw.

[0014] Preferably, a guide rod is fixedly arranged on the base, the guide rod is arranged parallel to the lead screw, and the lower support rod is slidably arranged on the guide rod.

[0015] Preferably, a gap is provided between the bushing and the guide wheel, a plurality of heat sinks are provided on the inner wall of the bushing along the circumferential direction, and the heat sinks are located between the bushing and the guide wheel.

[0016] Preferably, the pressing rod is connected to a blowing pipe, an air duct is provided inside the pressing rod, the air duct is communicated with the blowing pipe, and a blowing hole is provided on the lower end surface of the pressing rod, the blowing hole is communicated with the air duct.

[0017] The beneficial effects of adopting the above technical solution are:

[0018] 1. In the utility model, the bushing is sleeved on the guide wheel. When the steel is guided, the bushing contacts the steel. After the bushing is worn due to long-term work, it is only necessary to remove the bushing from the guide wheel and replace it with a new one. There is no need to completely dismantle the guide wheel, which can greatly save manpower and material resources, reduce labor intensity, and improve work efficiency.

[0019] 2. In the utility model, a fixing groove is provided on the guide wheel, and a fixing strip is provided on the bushing. When the bushing is installed with the positioning wheel, the fixing strip is clamped in the fixing groove, which can prevent the guide wheel and the bushing from rotating relative to each other, and avoid the bushing from wearing the guide wheel;

[0020] 3. In the utility model, a gap is provided between the guide wheel and the bushing, and a heat sink is provided between the guide wheel and the bushing. The heat on the steel can be quickly dissipated from the heat sink into the air, so that the heat cannot be completely conducted to the guide wheel, thereby reducing the temperature of the guide wheel and extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0022] Figure 2 It is a three-dimensional schematic diagram of the base of the utility model;

[0023] Figure 3 It is a three-dimensional schematic diagram of the guide wheel of the utility model;

[0024] Figure 4 It is a schematic diagram of the structure of the pressing rod of the utility model.

[0025] In the figure: 1 is a base, 2 is a guide frame, 3 is a guide wheel, 4 is a bushing, 5 is a fixing groove, 6 is a fixing bar, 7 is a lower support rod, 8 is a connecting rod, 9 is a clamping rod, 10 is a lead screw, 11 is a guide rod, 12 is a heat sink, 13 is a blow pipe, 14 is an air duct, and 15 is a blow hole. DETAILED DESCRIPTION

[0026] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected 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.

[0029] like Figure 1As shown, a guide device for a finishing mill comprises a base 1, a guide frame 2, a guide wheel 3 and a bushing 4. The base 1 is arranged at the entrance of the finishing mill and is used for guiding and limiting steel. Two guide frames 2 are provided, which are horizontally slidably arranged on the upper end surface of the base 1. The two guide frames 2 slide in the direction of approaching or moving away from each other, and the distance between the two guide frames 2 can be adjusted to adapt to steel of different sizes. The guide wheel 3 is rotatably arranged on the guide frame 2, and each guide frame 2 is provided with a plurality of guide wheels 3. When the steel moves along the direction of the guide frame 2, the guide wheel 3 guides the steel. The bushing 4 is sleeved on the guide wheel 3, so as to protect the guide wheel 3 and reduce the wear of the steel on the guide wheel 3. A plurality of fixing grooves 5 are arranged on the circumferential surface of the guide wheel 3 along the axial direction of the guide wheel 3, and the bushing 4 is a sleeve-like structure. A plurality of fixing strips 6 are fixedly arranged on the inner wall of the bushing 4, and the fixing strips 6 are inserted into the fixing grooves 5. In the process of contact between the steel and the bushing 4, relative sliding between the bushing 4 and the guide wheel 3 can be avoided, and friction between the bushing 4 and the guide wheel 3 can be avoided, thereby protecting the guide wheel 3. In the present embodiment, since the bushing 4 is sleeved on the guide wheel 3, the bushing 4 and the steel are in rolling contact during the process of guiding the steel by the guide wheel 3, so no friction is generated between the steel and the guide wheel 3, thereby protecting the guide wheel 3. After the bushing 4 is worn due to long-term work, it is only necessary to remove the bushing 4 from the guide wheel 3 and replace it with a new bushing 4. The disassembly and assembly process is simple and convenient, the replacement speed is fast, and the impact on production is small.

[0030] Furthermore, the guide frame 2 is a trumpet-shaped structure, with a larger opening at the end away from the finishing mill and a smaller opening at the end close to the finishing mill, thereby facilitating the entry of steel.

[0031] Furthermore, the guide frame 2 includes a lower support rod 7, a connecting rod 8 and a clamping rod 9. The lower support rod 7 is slidably arranged on the base 1. Two connecting rods 8 are provided. The two connecting rods 8 are vertically fixed at the two ends of the lower support rod 7. The clamping rod 9 is detachably fixedly connected to the connecting rod 8, that is, a threaded hole is arranged on the upper end surface of the connecting rod 8. A bolt is rotatably arranged on the clamping rod 9. The bolt is threadedly arranged in the threaded hole. The connecting rod 8 and the lower support rod 7 are arranged in parallel. A plurality of mounting shafts are vertically fixed on the lower support rod 7. A plurality of through holes are opened on the clamping rod 9. The upper end of the mounting shaft is inserted into the through hole. The guide wheel 3 is rotatably arranged between the connecting rod 8 and the lower support rod 7. The guide wheel 3 is arranged on the mounting shaft. A bearing is arranged between the mounting shaft and the guide wheel 3.

[0032] Furthermore, if Figure 2As shown, a screw 10 is rotatably arranged on the base 1, and the screw 10 is driven to rotate by a motor fixedly arranged on the base 1. The screw 10 is a bidirectional screw, and two threads with different rotation directions are symmetrically arranged on the screw 10. The lower support rod 7 is threadedly connected to the screw 10, and the two lower support rods 7 are respectively located at two threads with different rotation directions of the screw 10, so that when the screw 10 rotates, the two lower support rods 7 can move towards or away from each other.

[0033] Furthermore, a guide rod 11 is fixedly provided on the base 1, and the guide rod 11 is arranged parallel to the lead screw 10. The lower support rod 7 is slidably provided on the guide rod 11, so that the lower support rod 7 can slide more smoothly.

[0034] Furthermore, the base 1 is provided with a first slide groove and a second slide groove, the first slide groove and the second slide groove are arranged in parallel, the length direction of the first slide groove and the second slide groove is the same as the moving direction of the lower support rod 7, the lead screw 10 is located below the first slide groove, the guide rod 11 is located below the second slide groove, and the lower end surface of the lower support rod 7 is fixedly provided with a first slider and a second slider, the first slider is slidably set in the first slide groove, the second slider is slidably set in the second slide groove, the first slider is threadedly connected to the lead screw 10, and the second slider is slidably set on the guide rod 11.

[0035] Furthermore, if Figure 3 As shown, since the temperature of the steel is relatively high, the high temperature is easily transferred to the guide wheel 3 after contacting the bushing 4 and causes the bearing temperature to rise. Long-term operation can easily cause the bearing to be damaged, and then the bearing needs to be replaced. To replace the bearing, the guide wheel 3 needs to be removed before replacement, and the process is cumbersome and inconvenient. Therefore, in order to facilitate heat dissipation, a gap is provided between the bushing 4 and the guide wheel 3, and a plurality of heat sinks 12 are provided on the inner wall of the bushing 4 along the circumferential direction. The heat sink 12 is located between the bushing 4 and the guide wheel 3. When the temperature of the steel is transferred to the bushing 4, the heat can be quickly dissipated from the heat sink 12 to the air, which plays a role in heat dissipation. At the same time, one end of the heat sink 12 abuts against the guide wheel 3, which can enhance the structural strength of the bushing 4 and prevent the bushing 4 from being damaged.

[0036] Furthermore, if Figure 4As shown, a blowing pipe 13 is connected to the clamping rod 9, and an air duct 14 is arranged inside the clamping rod 9, and the air duct 14 is communicated with the blowing pipe 13. A blowing hole 15 is opened on the lower end surface of the clamping rod 9, and the blowing hole 15 is communicated with the air duct 14. A heat dissipation channel is formed between two adjacent heat sinks 12, and the blowing pipe 13 blows cold air into the air duct 14. The cold air flows along the air duct 14 and is blown out from the blowing hole 15 on the lower end surface of the clamping rod 9, and the heat dissipation channel is directly below the blowing hole 15. Therefore, the cold air blown out from the blowing hole 15 enters the heat dissipation channel and quickly blows out the heat, thereby reducing heat accumulation and lowering the temperature of the bushing 4 and the guide wheel 3.

[0037] In another embodiment, an adjusting screw is rotatably provided on the base 1, and two adjusting screws are provided and symmetrically arranged. The first slider is threadedly connected to the adjusting screw, and the position of the lower support rod 7 is adjusted by screwing the adjusting screw to adapt to steel of different specifications.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A finishing mill guide device, characterized in that: It comprises a base (1) arranged at the entrance of a finishing mill; Two guide frames (2) are provided and are slidably arranged on the base (1); A guide wheel (3) is rotatably mounted on the guide frame (2); A bushing (4) is sleeved on the guide wheel (3); A fixing groove (5) is arranged on the surface of the guide wheel (3) along the circumferential direction; The fixing strip (6) is fixedly arranged on the inner wall of the bushing (4) and is clamped in the fixing groove (5).

2. A finishing mill guide device according to claim 1, characterized in that: The guide frame (2) comprises a lower support rod (7), a connecting rod (8) and a clamping rod (9); the lower support rod (7) is slidably arranged on the base (1); two connecting rods (8) are provided, and the two connecting rods (8) are fixedly arranged at two ends of the lower support rod (7); the clamping rod (9) is detachably fixedly connected to the connecting rod (8); the connecting rod (8) and the lower support rod (7) are arranged in parallel; and the guide wheel (3) is rotatably arranged between the connecting rod (8) and the lower support rod (7).

3. A finishing mill guide device according to claim 2, characterized in that: The pressing rod (9) and the connecting rod (8) are fixedly connected by bolts.

4. A finishing mill guide device according to claim 2, characterized in that: A lead screw (10) is rotatably arranged on the base (1), and the lower support rod (7) is threadedly connected to the lead screw (10).

5. A finishing mill guide device according to claim 4, characterized in that: A guide rod (11) is also fixedly arranged on the base (1), the guide rod (11) is arranged parallel to the lead screw (10), and the lower support rod (7) is slidably arranged on the guide rod (11).

6. A finishing mill guide device according to claim 2, characterized in that: A gap is provided between the bushing (4) and the guide wheel (3), a plurality of heat sinks (12) are provided on the inner wall of the bushing (4) along the circumferential direction, and the heat sinks (12) are located between the bushing (4) and the guide wheel (3).

7. A finishing mill guide device according to claim 6, characterized in that: The pressing rod (9) is connected to a blowing pipe (13), an air duct (14) is provided inside the pressing rod (9), the air duct (14) is communicated with the blowing pipe (13), and a blowing hole (15) is provided on the lower end surface of the pressing rod (9), the blowing hole (15) is communicated with the air duct (14).

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