Strip steel tensioning and deviation rectifying integrated device for continuous heat treatment furnace

Abstract

A strip steel tensioning and deviation rectifying integrated device for a continuous heat treatment furnace comprises a rotating frame (1), a deviation rectifying device (2), a deviation rectifying roller device (3), a tensioning roller device (4) and a bottom frame (5), and is characterized in that the rotating frame (1) is of a steel plate welding structure, and the deviation rectifying device (2) comprises a fixed part and a rotatable part; the deviation rectifying roller device (3) comprises a deviation rectifying roller (3.1) and a free end bearing seat (3.2), and the tensioning roller device (4) comprises a tensioning roller (4.1), a ball cage catcher (4.4), a gear motor (4.5) and a support (4.6). The strip steel tensioning and deviation rectifying integrated device for the continuous heat treatment furnace has the strip steel deviation rectifying function and the tension control function, can effectively improve the plate shape, and further has the advantages of being compact in structure, small in occupied space and easy to maintain.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgical machinery, in particular to a strip steel tensioning and deviation-correcting integrated device for a continuous heat treatment furnace. Background Art

[0002] A continuous heat treatment furnace is usually composed of several process sections (preheating section, heating section, soaking section, cooling section, etc.). The strip steel undergoes the corresponding heat treatment process in different process sections in the heat treatment furnace to form the final product.

[0003] The strip is usually transmitted by furnace rollers in the heat treatment furnace, and the speed of the strip is adjusted by the rotation speed of the furnace rollers. Due to the fast transmission speed of the strip in the heat treatment furnace and the large temperature fluctuations between different process sections, the tension of the strip will change greatly, resulting in the deviation of the strip, accompanied by strip warping, edge waves and other plate defects. Therefore, it is usually necessary to set a deviation correction device and a hot tensioning roller device at the appropriate position of the unit to solve the above problems. The traditional deviation correction device and hot tensioning roller device are scattered and complex in structure, and occupy a large space of the unit. At the same time, the investment cost is high, the maintenance is large, and the work efficiency is low.

[0004] Therefore, the known deviation correcting device and heat tensioning roller device have the above-mentioned inconveniences and problems. Utility Model Content

[0005] The purpose of the utility model is to provide a safe and reliable integrated device for tensioning and correcting strip steel for a continuous heat treatment furnace.

[0006] To achieve the above purpose, the technical solution of the utility model is:

[0007] An integrated strip tensioning and deflection-correcting device for a continuous heat treatment furnace comprises a rotating frame, a deflection-correcting device, a deflection-correcting roller device, a tensioning roller device, and a bottom frame, and is characterized in that:

[0008] The rotating frame is a steel plate welded structure, which serves as the support of the entire device. A deviation correction roller device and a tension roller device are provided on the upper part of the rotating frame, and a deviation correction device is installed on the lower part. The entire rotating frame is installed on the bottom frame; a heat shield is provided on the inner wall of the rotating frame to isolate the heat of the strip steel;

[0009] The correcting device comprises a fixed part and a rotatable part, the fixed part comprises a driving cylinder, the driving cylinder is arranged on a matching driving cylinder support, and the driving cylinder support is fixedly mounted on the bottom frame; the rotatable part comprises four supporting wheels, a track, and a rotating center, the four supporting wheels are fixedly arranged at the lower edge position of the rotating frame according to a certain angle distributed in the rotating circumference, the axis of the supporting wheel needs to be aligned with the rotating center, so that the supporting wheel always runs along the tangent direction of the rotating radius; the track is cooperatively arranged below the supporting wheel, so that the supporting wheel always runs on the track, and the track is fixedly mounted on the bottom frame; a rotating seat and a self-lubricating bushing are provided at the upper part of the rotating center, and an axle seat is fixedly arranged at the lower part of the rotating center, wherein the upper rotating seat is fixedly mounted on the bottom of the rotating frame, and the lower fixed axle seat is fixedly mounted on the bottom frame, and a self-lubricating bushing is provided between the upper rotating seat and the lower fixed axle seat to ensure that the rotatable part and the fixed part are movably docked to achieve flexible rotation;

[0010] The deflection correction roller device comprises a deflection correction roller, a free end bearing seat of the deflection correction roller device, a fixed end bearing seat of the deflection correction roller device, a ball cage joint of the deflection correction roller device, a deceleration motor of the deflection correction roller device, and a support of the deflection correction roller device. The two ends of the deflection correction roller are respectively supported by the free end bearing seat and the fixed end bearing seat. The deceleration motor is fixed on the support. The deceleration motor drives the deflection correction roller to rotate through the ball cage joint. The support is arranged on the outer side wall of the top of the rotating frame.

[0011] The tensioning roller device comprises a tensioning roller, a tensioning roller device ball cage joint, a tensioning roller device reduction motor, a tensioning roller device support, a fixed end bearing seat bracket, a free end bearing seat bracket, a lifting reduction motor, two lifts, a synchronous shaft and an encoder. The tensioning roller devices at both ends of the tensioning roller are supported by the free end bearing seat and the fixed end bearing seat of the tensioning roller device. The free end bearing seat is fixedly installed on the upper part of the free end bearing seat bracket. The fixed end bearing seat and the support are respectively fixedly installed on the upper part and the side of the fixed end bearing seat bracket. The fixed end bearing seat bracket and the free end bearing seat bracket are respectively fixedly installed On the upper part of the two elevators, the two elevators are connected by a synchronous shaft and driven by a lifting reduction motor to realize the lifting and lowering of the tensioning roller; the reduction motor is fixedly installed on the support, and drives the tensioning roller to rotate through the ball cage; the tensioning roller device is accommodated in a U-shaped bracket, and the U-shaped bracket is overlapped on the side wall of the rotating frame. The linear guide rail of the tensioning roller device and the track of the linear guide rail are fixedly installed on the rotating frame, and the linear guide rail slider and the linear guide rail are respectively installed on both sides of the fixed end bearing seat bracket and the free end bearing seat bracket to ensure that the tensioning roller moves vertically along the guide rail direction, thereby increasing the stability of the tensioning roller operation.

[0012] Wherein: the deviation correction roller device and the tensioning roller device are respectively fixedly installed on both sides of the upper center line of the rotating frame through a bracket, and the bracket is fixed to the side wall of the rotating frame so that the axis of the deviation correction roller and the tensioning roller are parallel and perpendicular to the axis of the driving cylinder.

[0013] The integrated strip tensioning and deviation-correcting device for a continuous heat treatment furnace of the utility model can be further realized by adopting the following technical measures.

[0014] In the aforementioned integrated strip tensioning and deviation-correcting device for a continuous heat treatment furnace, the driving cylinder is an electric cylinder or a hydraulic cylinder.

[0015] After adopting the above technical scheme, the integrated device for strip tensioning and deviation correction for continuous heat treatment furnace of the utility model has the following advantages:

[0016] 1. The device has compact structure, small space occupation, simple maintenance and high working efficiency;

[0017] 2. While correcting the deviation of the strip, the tension of the strip can also be adjusted in real time;

[0018] 3. It can effectively improve the strip shape and improve product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a strip steel tensioning and deviation-correcting integrated device according to an embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the rotating frame structure of an embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of the connection between the rotating frame and the bottom frame of an embodiment of the utility model;

[0022] Figure 4 The schematic diagram of the assembly structure of the deviation correction roller of the utility model embodiment is shown as follows: Figure 1 Sectional view of AA in the middle;

[0023] Figure 5 The schematic diagram of the tension roller assembly structure of the utility model embodiment is shown as follows: Figure 1 Cross-sectional view of the middle BB;

[0024] Figure 6 It is a schematic structural diagram of the rotating frame linear guide rail and track of an embodiment of the utility model. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the embodiments and the accompanying drawings. Example

[0026] The utility model discloses a strip steel tensioning and deflection-correcting integrated device for a continuous heat treatment furnace, comprising a rotating frame 1, a deflection-correcting device 2, a deflection-correcting roller device 3, a tensioning roller device 4, and a bottom frame 5.

[0027] Please refer to Figure 1 , Figure 1 The schematic diagram of the structure of the integrated device for strip tensioning and deflection correction of the embodiment of the utility model is shown in the figure. As shown in the figure, the rotating frame 1 is a steel plate welded structure, which serves as the support of the entire device. The upper part thereof is equipped with a deflection correction roller device 3 and a tensioning roller device 4, and the lower part is equipped with a deflection correction device 2, which is integrally installed on the bottom frame 5. The inner wall of the rotating frame 1 and the bottom of the furnace roller are equipped with heat shielding plates 1.1 to isolate the heat of the strip 8 and improve the service life of each transmission component.

[0028] The rotatable part of the deviation correcting device 2 is installed at the lower part of the rotating frame 1 , and the other fixed parts are installed on the bottom frame 5 . The deviation correcting roller device 3 and the tensioning roller device 4 are both fixedly installed on the rotating frame 2 .

[0029] The deviation correcting device 2 is composed of a driving cylinder 2.1, a driving cylinder support 2.2, a supporting wheel 2.3, a track 2.4, and a rotation center 2.5.

[0030] The driving cylinder 2.1 is installed on the driving cylinder support 2.2, and the driving cylinder support 2.2 is fixedly installed on the bottom frame 3. The driving cylinder 2.1 can be in the form of an electric cylinder, a hydraulic cylinder, etc., and is used to drive the rotating frame 1 to rotate around the rotating center 2.4 to realize the strip steel correction function;

[0031] Figure 2 The schematic diagram of the rotating frame structure of the embodiment of the utility model is shown in FIG. 4 supporting wheels 2.3 are fixedly installed at the lower edge of the rotating frame 1. On the one hand, they are used to support the rotating frame 1 to ensure the stability of the entire device during the deviation correction and tension adjustment process. On the other hand, they are also convenient for maintenance (replacement and lubrication). In addition, the axis of the supporting wheel 2.3 needs to be aligned with the rotation center so that the supporting wheel 2.3 always runs along the tangent direction of the rotation radius.

[0032] Figure 3 The figure is a schematic diagram of the connection between the rotating frame and the bottom frame of the embodiment of the utility model. A track 2.4 is arranged below the support wheel 2.3, and the support wheel 2.3 always runs above the track 2.4. The track 2.4 is fixedly installed on the bottom frame 3, and its length and arrangement position are determined according to the walking track of the support wheel 2.3.

[0033] Figure 4 The schematic diagram of the assembly structure of the deviation correction roller of the utility model embodiment is shown as follows: Figure 1 The sectional view of AA in the middle. The rotating center 2.5 is composed of an upper rotating seat 2.5.1, a self-lubricating bushing 2.5.2, and a lower fixed shaft seat 2.5.3, wherein the upper rotating seat 2.5.1 is fixedly mounted on the bottom of the rotating frame 1, and the lower fixed shaft seat 2.5.3 is fixedly mounted on the bottom frame 3. A self-lubricating bushing 2.5.2 is installed between the upper rotating seat 2.5.1 and the lower fixed shaft seat 2.5.3 to ensure that the entire device can rotate freely and is also maintenance-free.

[0034] The deviation correction roller assembly 3 is composed of a deviation correction roller 3.1, a free end bearing seat 3.2, a fixed end bearing seat 3.3, a ball cage joint 3.4, a reduction motor 3.5, and a support 3.6.

[0035] The two ends of the deviation correction roller 3.1 are supported by a free end bearing seat 3.2 and a fixed end bearing seat 3.3 respectively. The reduction motor 3.5 is fixedly mounted on the support 3.6 and drives the deviation correction roller 3.1 to rotate through the ball cage joint 3.4.

[0036] The inner bearing of the free end bearing seat 3.2 can slide axially to absorb the axial expansion of the deviation correcting roller 3.1 caused by the temperature increase.

[0037] The output speed of the reduction motor 3.5 is determined by the linear speed of the strip steel of the unit. The specific formula is:

[0038]

[0039] Where: n1; output speed of the reduction motor:

[0040] v; Strip line speed;

[0041] D1: Diameter of the correction furnace roller;

[0042] Figure 5 The schematic diagram of the tension roller assembly structure of the utility model embodiment is shown as follows: Figure 1 The sectional view of the middle BB. The tension roller 4 assembly consists of a tension roller 4.1, a free end bearing seat 4.2, a fixed end bearing seat 4.3, a ball cage joint 4.4, a reduction motor 4.5, a support 4.6, a fixed end bearing seat bracket 4.7, a free end bearing seat bracket 4.8, a lifting reduction motor 4.9, a lift 4.10, a lift 4.11, a synchronous shaft 4.12 and an encoder 4.13.

[0043] Both ends of the tensioning roller 4.1 are supported by a free end bearing seat 4.2 and a fixed end bearing seat 4.3 respectively. A reduction motor 4.5 is fixedly mounted on a support 4.6 and drives the tensioning roller 4.1 to rotate through a ball cage joint 4.4.

[0044] The inner bearing of the free end bearing seat 4.2 can slide axially to absorb the axial expansion of the tension roller 4.1 due to the temperature increase.

[0045] The output speed of the reduction motor 4.5 is determined by the linear speed of the strip steel of the unit. The specific formula is:

[0046]

[0047] Where: n2; output speed of the reduction motor:

[0048] v; Strip line speed;

[0049] D2: diameter of tensioning furnace roller;

[0050] The free end bearing seat 4.2 is fixedly mounted on the upper part of the free end bearing seat bracket 4.8, the fixed end bearing seat 4.3 and the support 4.6 are respectively fixedly mounted on the upper part and the side part of the fixed end bearing seat bracket 4.7, and the fixed end bearing seat bracket 4.7 and the free end bearing seat bracket 4.8 are respectively fixedly mounted on the upper part of the elevators 4.10 and 4.11. The elevators 4.10 and 4.11 are connected by a synchronous shaft 4.12 and driven by a lifting reduction motor 4.9, and finally realize the lifting action of the tension roller 4.1.

[0051] Figure 6 The schematic diagram of the structure of the linear guide rail and track of the rotating frame of the utility model embodiment. The tracks of the linear guide rails 4.14 and 4.15 are fixedly installed on the rotating frame 1, and the sliders of the linear guide rails 4.14 and 4.15 are respectively installed on both sides of the fixed end bearing seat bracket 4.7 and the free end bearing seat bracket 4.8 to ensure that the tension roller 4.1 strictly moves vertically along the guide rail direction, thereby increasing the stability of the tension roller operation.

[0052] The lifting and lowering stroke of the tensioning roller 4.1 is detected by the encoder 4.13.

[0053] Since the strip steel 8 will generate corresponding wrap angles on the deviation correction roller 3.1 and the tension roller 4.1, in order to ensure that the strip steel 8 does not produce plastic deformation, the roller diameter of the furnace roller needs to be determined according to the characteristics of the strip steel 8 of the unit. The calculation method is:

[0054]

[0055] Where: D min ;Minimum roller diameter:

[0056] h; Strip thickness;

[0057] E: elastic modulus of strip steel;

[0058] σ s : Yield strength of strip steel;

[0059] The diameter of the deviation correction roller 3.1 and the tension roller 4.1 must be no less than D min .

[0060] The utility model relates to a strip steel tensioning and deviation-correcting integrated device for a continuous heat treatment furnace. Working principle:

[0061] The strip steel 8 runs along the process direction of the unit, firstly penetrates from the upper surface of the deviation correction roller 3.1, then passes out from the lower surface of the tension roller 4.1, passes through this device, and then penetrates from the upper surface of the driving roller of the adjacent equipment;

[0062] When the strip 8 deviates, the unit will issue a correction command, and the drive cylinder 2.1 drives the rotating frame 1 to drive the correction roller 3.1 and the tension roller 4.1 to rotate around the rotation center 2.5 to correct the strip, and finally make the center of the strip coincide with the center line of the unit. The correction roller 3.1 and the tension roller 4.1 have the correction function at the same time. The extension and retraction action of the drive cylinder 2.1 is determined according to the deviation direction of the strip.

[0063] When the tension of the steel strip 8 changes, the tension of the steel strip can be adjusted in real time by the tensioning roller 4.1:

[0064] The tension roller 4.1 rises to reduce the tension of the steel strip 8;

[0065] The tension roller 4.1 is lowered to increase the tension of the steel strip 8;

[0066] Since the strip steel will have a certain wrap angle on the surface of the tension roller, the tension roller 4.1 can also effectively transform the shape of the strip steel 8 when adjusting the tension;

[0067] When the tensioning roller 4.1 is in the uppermost position, the lower surface of the furnace roller is higher than the strip elevation, which can facilitate the strip threading of the unit.

[0068] The utility model has substantial characteristics and remarkable technical progress. The integrated strip steel tensioning and deviation correction device for a continuous heat treatment furnace of the utility model has both the strip steel deviation correction function and the tension control function, can also effectively change the state of the plate shape, and has the characteristics of compact structure, small space occupation, simple maintenance, etc., and is particularly suitable for various types of strip steel continuous heat treatment furnaces.

[0069] The above embodiments are only for the purpose of illustrating the present invention, but not for limiting the present invention. A person skilled in the relevant technical field may make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also belong to the scope of the present invention and should be defined by the claims.

Claims

1. A strip tensioning and deflection-correcting integrated device for a continuous heat treatment furnace, comprising a rotating frame (1), a deflection-correcting device (2), a deflection-correcting roller device (3), a tensioning roller device (4), and a bottom frame (5), characterized in that: The rotating frame (1) is a steel plate welded structure, serving as a support for the entire device. A deviation correction roller device (3) and a tension roller device (4) are provided on the upper portion of the rotating frame, and a deviation correction device (2) is installed on the lower portion. The entire rotating frame is installed on a bottom frame (5). A heat shield (1.1) is provided on the inner wall of the rotating frame (1) for isolating the heat of the strip steel (8). The deviation correction device (2) comprises a fixed part and a rotatable part, wherein the fixed part comprises a drive cylinder (2.1), wherein the drive cylinder is arranged on a matching drive cylinder support (2.2), and the drive cylinder support is fixedly mounted on a bottom frame (5); the rotatable part comprises four support wheels (2.3), a track (2.4), and a rotation center (2.5), wherein the four support wheels are fixedly mounted at the lower edge of the rotation frame at a certain angle distributed along the circumference of the rotation, and the axes of the support wheels need to be aligned with the rotation center so that the support wheels always run along the tangent direction of the rotation radius; the track is matched and arranged below the support wheels so that the support wheels always run on the track, and the track is fixedly mounted on the bottom frame; a rotating seat (2.5.1) and a self-lubricating bushing (2.5.2) are provided at the upper part of the rotation center, and an axle seat (2.5.3) is fixedly mounted at the lower part of the rotation center, wherein the upper rotating seat is fixedly mounted on the bottom of the rotation frame, and the lower fixed axle seat is fixedly mounted on the bottom frame, and a self-lubricating bushing is provided between the upper rotating seat and the lower fixed axle seat to ensure that the rotatable part and the fixed part are movably docked to achieve flexible rotation; The deflection correction roller device (3) comprises a deflection correction roller (3.1), a free end bearing seat (3.2) of the deflection correction roller device, a fixed end bearing seat (3.3) of the deflection correction roller device, a ball cage joint (3.4) of the deflection correction roller device, a deceleration motor (3.5) of the deflection correction roller device, and a support (3.6) of the deflection correction roller device. The two ends of the deflection correction roller are respectively supported by the free end bearing seat and the fixed end bearing seat. The deceleration motor is fixed on the support. The deceleration motor drives the deflection correction roller to rotate through the ball cage joint. The support is arranged on the outer side wall of the top of the rotating frame (1). The tensioning roller device (4) comprises a tensioning roller (4.1), a tensioning roller device ball cage connector (4.4), a tensioning roller device reduction motor (4.5), a tensioning roller device support (4.6), a fixed end bearing seat bracket (4.7), a free end bearing seat bracket (4.8), a lifting reduction motor (4.9), two lifts (4.10, 4.11), a synchronous shaft (4.12) and an encoder (4.13), wherein the tensioning roller devices at both ends of the tensioning roller are supported by a free end bearing seat (4.2) and a tensioning roller device fixed end bearing seat (4.3), the free end bearing seat is fixedly mounted on the upper part of the free end bearing seat bracket (4.8), the fixed end bearing seat and the support are respectively fixedly mounted on the upper part and the side of the fixed end bearing seat bracket, and the fixed end bearing seat bracket and the free end bearing seat bracket are respectively fixedly mounted on the two lifts (4.10, 4. 11) at the upper part, two elevators (4.10, 4.11) are connected by a synchronous shaft (4.12) and driven by a lifting reduction motor (4.9) to realize the lifting and lowering of the tensioning roller (4.1); the reduction motor (4.5) is fixedly installed on the support (4.6) and drives the tensioning roller (4.1) to rotate through the ball cage joint (4.4); the tensioning roller device (4) is accommodated in a U-shaped bracket, and the U-shaped bracket is overlapped on the side wall of the rotating frame. The linear guide rail (4.14) and the linear guide rail (4.15) of the tensioning roller device are fixedly installed on the rotating frame (1), and the linear guide rail slider (4.14) and the linear guide rail (4.15) are respectively installed on both sides of the fixed end bearing seat bracket (4.7) and the free end bearing seat bracket (4.8) to ensure that the tensioning roller (4.1) moves vertically along the guide rail direction, thereby increasing the stability of the tensioning roller operation. The deviation correction roller device (3) and the tension roller device (4) are each fixedly mounted on both sides of the upper center line of the rotating frame (1) through a bracket, and the bracket is fixed to the side wall of the rotating frame so that the axes of the deviation correction roller and the tension roller are parallel and perpendicular to the axis of the driving cylinder (2.1).

2. The integrated device for strip tensioning and deviation correction for a continuous heat treatment furnace according to claim 1, characterized in that: The driving cylinder (2.1) is an electric cylinder or a hydraulic cylinder.

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