Precise straightening machine for H-shaped steel wing plate

Abstract

The invention relates to the technical field of steel structure deep processing, and particularly discloses an H-shaped steel wing plate precise straightening machine which comprises a box base and a control box, a row of conveying rollers are rotationally arranged in the box base, and a primary straightening unit and a secondary straightening unit are arranged on the left side and the right side of the upper end of the box base correspondingly. A detection mechanism for detecting the flatness of an upper wing plate and a lower wing plate of the H-shaped steel is arranged between the primary correction unit and the secondary correction unit, and the detection mechanism is electrically connected with the control box; according to the precise straightening machine for the H-shaped steel wing plate, various deformation conditions of the H-shaped steel wing plate can be effectively eliminated, the H-shaped steel can keep the optimal mechanical structure stability, the detection framework can conduct all-directional detection on the wing plates with different widths, and therefore the detection precision of the flatness of the H-shaped steel wing plate is higher, and the application range is wider.

Description

Technical Field

[0001] The invention relates to the technical field of deep processing of steel structures, and specifically discloses a precise straightening machine for an H-shaped steel wing plate. Background Art

[0002] H-shaped steel is a common steel structure profile, which is welded from a web and two wing plates and is widely used in various large buildings. However, during the production and processing of H-shaped steel, the upper and lower wing plates may not be perpendicular to the web (that is, the wing plates are not horizontal), and a straightening machine is needed to correct them.

[0003] The invention patent with application number 2023105579768 discloses an H-beam straightening machine, including a machine body, a plurality of conveying rollers are rotatably connected in the grooves on the upper surface of the machine body, a top plate is arranged above the machine body, a support column is fixed between the top plate and the machine body, the piston rod of the hydraulic cylinder passes through the top plate and is fixed with a pressure roller frame, and a first pressure roller is rotatably connected below the pressure roller frame; a movable clamping assembly is arranged below the top plate, and the movable clamping assembly includes a first telescopic rod and a clamping plate, the bottom of the first telescopic rod is fixed to the clamping plate, a T-shaped slider is fixed to the top of the first telescopic rod, and a slide groove for the slider to slide is provided at the bottom of the top plate, and the slide groove is arranged along the length direction of the top plate. The patented technical solution is basically the same as the correction principle of the traditional H-beam straightening machine, both of which are to contact the upper surface of the upper wing plate of the H-beam by the pressure roller to press and correct it, and to contact the upper surface of the lower wing plate of the H-beam by the roller to press and correct it. However, this type of straightening machine can only straighten the upper wing plate of the H-beam when it is tilted (see attached Figure 8 ) for correction, and some H-shaped steels are deformed inwards due to uneven flanges or in the process of transportation, flipping and hoisting after welding (see attached Fig. 9 ) cannot be effectively corrected, resulting in the need for manual flame correction. Therefore, in view of the insufficiency of the existing H-beam straightening machine being unable to accurately correct various deformations of H-beam, the present application proposes an H-beam wing plate precision straightening machine that can effectively solve the above problem. Summary of the invention

[0004] The present invention aims to provide an H-beam wing plate precision straightening machine which can accurately correct various deformations of H-beams, so as to solve the deficiency that the existing H-beam straightening machine can only correct the tilt deformation of the wing plate.

[0005] The present invention is achieved through the following technical solutions: An H-beam wing plate precision correction machine comprises a box seat and a control box, wherein a row of conveying rollers are rotatably arranged in the box seat, a primary correction unit and a secondary correction unit are respectively arranged on the left and right sides of the upper end of the box seat, and a detection mechanism for detecting the flatness of the upper and lower wing plates of the H-beam is arranged between the primary correction unit and the secondary correction unit, and the detection mechanism is electrically connected to the control box; The primary correction unit comprises a first horizontal frame, in which a first pressing roller is provided for cooperating with a conveying roller to correct the H-shaped steel flange, and a centering clamping wheel assembly for acting on the H-shaped steel web is provided at the lower left end of the first horizontal frame; The secondary correction unit includes a second cross frame, in which a second pressure roller acting on the upper wing plate of the H-shaped steel is arranged, and wing plate bending correction mechanisms are arranged at the front and rear ends below the second pressure roller, and the wing plate bending correction mechanism includes a fixedly arranged carrier box, and wheel seats are symmetrically arranged at the upper and lower ends of the carrier box, and the outer ends of the wheel seats are rotatably connected to extrusion wheels acting on the H-shaped steel wing plates, and a driving component is arranged in the carrier box to realize the upper and lower wheel seats approaching or moving away from each other.

[0006] As a further configuration of the above scheme, the detection mechanism includes a mounting frame, and vertically upward and downward laser rangefinders are respectively provided at the upper and lower ends of the mounting frame, and the laser rangefinder is electrically connected to the control box.

[0007] As a further configuration of the above solution, the distances from the laser rangefinders at the upper and lower ends to the upper and lower wing plates of the H-shaped steel are set to be equal.

[0008] As a further configuration of the above scheme, the detection mechanism also includes an L-shaped bar fixedly connected to the second horizontal frame, one end of the mounting frame is rotatably connected to the L-shaped bar, and the L-shaped bar is provided with a telescopic driving member for driving the mounting frame to rotate, and at least two laser rangefinders are provided at the upper and lower ends of the mounting frame.

[0009] As a further configuration of the above scheme, the primary correction unit also includes a wheel frame arranged directly below the first pressure roller, the box seat is provided with a second hydraulic cylinder for driving the wheel frame to move up and down, and pressure wheels acting on the lower wing plate of the H-shaped steel are rotatably provided on both sides of the upper end of the wheel frame.

[0010] As a further configuration of the above scheme, the upper ends of the first cross frame and the second cross frame are respectively provided with a first hydraulic cylinder and a fourth hydraulic cylinder, the lower end of the first hydraulic cylinder is connected to a first roller frame for assembling the first pressure roller, and the lower end of the fourth hydraulic cylinder is connected to a second roller frame for assembling the second pressure roller.

[0011] As a further configuration of the above scheme, a center clamping wheel assembly acting on the H-shaped steel web is also provided at the lower left end of the second cross frame, and the center clamping wheel assembly includes a pushing frame symmetrically arranged front and rear and a third hydraulic cylinder for driving the two pushing frames to approach each other, and clamping wheels are rotatably provided on both pushing frames.

[0012] As a further arrangement of the above scheme, both upper and lower ends of the carrier box are provided with through openings for extending the wheel seats, a partition is provided at one inner end of the carrier box, a guide rod passing through the wheel seats is provided on the partition, and springs are connected between the partition and the two wheel seats, and the driving assembly includes a fifth hydraulic cylinder arranged on the end face of the carrier box, the inner end of the fifth hydraulic cylinder extending into the carrier box is connected with an extrusion push block, and the inner surfaces of the two wheel seats are fixedly provided with inclined blocks that act on the extrusion push blocks.

[0013] During operation of the H-beam wing plate precision correction machine disclosed in the present invention, the H-beam is conveyed from left to right by the conveying roller, and then successively processed by the primary correction unit, the detection mechanism and the secondary correction unit to eliminate the wing plate deformation of the H-beam and maintain the best mechanical structure stability.

[0014] When the H-beam enters the primary correction unit, the upper wing plate of the H-beam is acted upon by the first pressure roller, and the lower wing plate is acted upon by the support roller to achieve its tilt correction. After the primary correction is completed, the laser rangefinder in the detection mechanism detects whether the distance between the wing plate and the laser detector is within the set area. If it is within the set area, it indicates that the correction is completed, and the second correction unit does not need to perform correction processing, and the H-beam can quickly pass through the entire second correction unit. If the detected distance is found to be greater than the set area, it indicates that the tilt of the wing plate has not been completely corrected; if the detected distance is found to be less than the set area, it indicates that the wing plate has an inward bending deformation. At this time, the conveying speed of the H-beam is reduced, and the second correction unit is started for secondary correction.

[0015] During the secondary straightening process, the two wheel seats are driven to operate synchronously through the driving assembly, so that the upper and lower sets of extrusion wheels act on the inner surface of the wing plate, and then the second pressing roller and the conveying roller act on the outer surface of the wing plate respectively, so as to achieve synchronous straightening of the upper and lower wing plates, so that the H-shaped steel can be completely straightened after being processed by the second straightening unit and sent out from the right end of the box seat after straightening.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The H-beam wing plate precision correction machine disclosed in the present invention adopts secondary correction processing, and the detection mechanism detects the flatness of the wing plate after the first correction, and determines whether to perform a secondary correction based on the detection feedback information. The first correction can effectively deal with the tilt deformation of the wing plate, and the second correction can effectively deal with the tilt or inward bending deformation of the wing plate for a second time, so that the two corrections can effectively eliminate various deformation conditions of the H-beam wing plate, so that the H-beam can maintain the best mechanical structure stability.

[0017] The structural design of the wing plate bending correction mechanism in the present invention can quickly use the telescopic driving member to enable the upper and lower rows of extrusion wheels to extrude the upper and lower wing plates when the H-steel wing plates need to be corrected for the second time. The upper and lower wing plates can then be clamped and corrected under the action of the second pressing roller and the conveying roller, thereby ensuring the correction effect. Moreover, when no correction is needed, the wing plate can be quickly retracted without contacting the H-steel wing plates, thereby ensuring that the H-steel can pass quickly after the first correction, thereby improving the correction speed of the H-steel.

[0018] The present invention further optimizes the design of the detection mechanism, and controls the telescopic driving parts so that a row of laser rangefinders can detect different positions in the width direction of the H-shaped steel wing plate, thereby ensuring the accuracy of the detection results. Even on wing plates with different widths, all-round detection can be performed, thereby making the detection accuracy of the flatness of the H-shaped steel wing plate higher and the scope of application wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure from a first angle of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure from a second angle of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the primary correction unit in the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the secondary correction unit and the detection mechanism in the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the carrier box, wheel seat, extrusion wheel, etc. in the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure inside the carrier box of the present invention; Figure 7 Schematic diagram of the three-dimensional structure of the detection mechanism in Example 2 of the present invention; Figure 8 It is a schematic diagram of the cross-sectional structure of the inclined deformation of the upper wing plate of the H-shaped steel; Fig. 9 It is a schematic diagram of the cross-sectional structure of the inward bending deformation of the upper wing plate of the H-shaped steel. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Figures 1 to 9 , and describes the application in detail with reference to embodiments. Example 1

[0023] Embodiment 1 discloses an H-beam flange precision correction machine, see attached Figure 1 and attached Figure 2 The straightening machine comprises a box seat 1 and a control box 2. A conveying groove 101 is provided on the upper surface of the box seat 1, and a row of conveying rollers 102 are rotatably connected in the conveying groove 101, and a conveying motor 103 for driving the conveying rollers 102 is provided on the side of the box seat 1. The control box 2 is fixedly provided on the front side of the box seat 1 through a connecting piece, and a display screen and control buttons are provided on its surface, and a corresponding control module is provided inside.

[0024] A primary correction unit 3 and a secondary correction unit 4 are respectively arranged on the left and right sides of the upper end of the box seat 1, and a detection mechanism 6 for detecting the flatness of the wing plate of the H-beam 100 is arranged between the primary correction unit 3 and the secondary correction unit 4. The detection mechanism 6 is electrically connected to the control module inside the control box 2, and the H-beam 100 after the primary correction is detected by the detection mechanism 5, and then the secondary correction unit 4 is controlled to be put into correction operation according to the detection result.

[0025] Reference Figure 3The primary correction unit 3 includes a first horizontal frame 301, a first hydraulic cylinder 302 is provided at the upper end of the first horizontal frame 301, and then a first roller frame 303 is connected to the lower end of the first hydraulic cylinder 302, and a first pressing roller 304 is rotatably provided in the first roller frame 303. In addition, in order to ensure that the first roller frame 303 can be stably lifted and lowered, first slide rails 305 are provided on the front and rear inner side walls of the first horizontal frame 301, and sliding openings for interacting with the first slide rails 305 are provided at the front and rear ends of the first roller frame 303. A wheel frame 306 is provided in the conveying trough 101 below the first roller frame 303, a second hydraulic cylinder 307 for driving the wheel frame 306 to lift and lower is provided in the box seat 1, and then pressing wheels 308 extending toward the center of the conveying trough 101 are rotatably provided on both the front and rear sides of the upper end of the wheel frame 306.

[0026] A pair of symmetrically arranged center clamping roller assemblies are arranged on the left side of the lower end of the first cross frame 301, and the center clamping roller assembly includes a third hydraulic cylinder 309 installed on the outer side of the first cross frame 301, and a pushing frame 310 located in the first cross frame 301 is connected to the movable end of the third hydraulic cylinder 309, and a row of clamping wheels 311 acting on the web of the H-beam are rotatably connected to the end of the pushing frame 310, so that when the H-beam is conveyed by the conveying roller 102, it is first clamped and positioned by the front and rear two center clamping roller assemblies so that it is stably conveyed along the central axis direction of the conveying trough 101, and then the upper and lower wing plates of the H-beam are respectively corrected by the first pressure roller 304 and the pressure wheel 308.

[0027] Reference Figure 4 , Attachment Figure 5 and attached Figure 6 The secondary correction unit 4 includes a second horizontal frame 401, a fourth hydraulic cylinder 402 is arranged at the upper end of the second horizontal frame 401, and then a second roller frame 403 is connected to the lower end of the fourth hydraulic cylinder 402, and a second pressure roller 404 is rotatably arranged in the second roller frame 403. Similarly, in order to ensure that the second roller frame 403 can be stably raised and lowered, second slide rails 405 are arranged on the front and rear inner side walls of the second horizontal frame 401, and sliding openings that interact with the second slide rails 405 are opened at the front and rear ends of the second roller frame 403. Similarly, in order to ensure that the H-shaped steel 100 can move stably in the center before the second correction treatment, a pair of centering clamping wheel assemblies symmetrically arranged front and back are also arranged on the left side of the lower end of the second horizontal frame 401.

[0028] The wing plate bending correction mechanism 500 is fixedly connected to the front and rear inner walls of the second horizontal frame 401 directly below the second horizontal frame 401 through the connecting seat 406. The wing plate bending correction mechanism 500 includes a carrier box 501 fixedly connected to the connecting seat 406. The upper and lower surfaces of the carrier box 501 are provided with through openings, and then a wheel seat 502 extending into the carrier box 501 is arranged in the through opening, and a row of extrusion wheels 503 is rotatably connected to the outer end of the wheel seat 502 extending out of the through opening. A partition 504 extends inwardly from one side end of the carrier box 501, and a guide rod 505 vertically penetrating the wheel seat 502 is arranged on the partition 504, and a spring 506 is connected between the partition 504 and the upper and lower wheel seats 502. Inclined surface blocks 507 are fixedly arranged on the inner surface of the wheel seat 502 on the side away from the partition 504, and the inclined surface blocks 507 on the upper and lower wheel seats 502 are symmetrically and staggered. A fifth hydraulic cylinder 508 is provided at the side end of the carrier box 501, and an extrusion push block 509 extending into the interior of the carrier box 501 and acting simultaneously with the upper and lower groups of inclined blocks 507 is connected to the movable end of the fifth hydraulic cylinder 508. The side ends of the extrusion push block 509 and the inclined block 507 that act on each other are provided with inclined surfaces that match them, so that under the pushing action of the fifth hydraulic cylinder 508, the action between the extrusion push block 509 and the inclined block 507 can make the upper and lower wheel seats 502 move away from each other, so that the upper and lower rows of extrusion wheels 503 act on the inner surfaces of the upper and lower wing plates respectively.

[0029] Finally, the detection mechanism 6 is arranged at the front and rear ends of the second cross frame 401 on the left side of the center clamping wheel assembly, and includes a mounting frame 601 fixedly connected to the second cross frame 401. The upper and lower ends of the mounting frame 601 are respectively provided with two groups of laser rangefinders 602 pointing vertically upward and downward, and the laser rangefinder 602 is connected to the control module point inside the control box 2 through a data cable. At the same time, the distance between the upper and lower groups of laser rangefinders 602 and the upper and lower wing plates of the H-shaped steel should be controlled to be equal.

[0030] During operation, the H-beam wing plate precision correction machine disclosed in the present embodiment 1 conveys the H-beam to be corrected from left to right by the conveying roller 102. When the H-beam 100 enters the primary correction unit 3, it is first clamped and positioned by the centering clamping wheel assembly so that the H-beam 100 moves to the right in a centered and stable manner. Then, the upper wing plate of the H-beam is corrected by the first pressure roller 304, and the lower wing plate of the H-beam is corrected by the pressure wheel 308 and the conveying roller 102. This primary correction can only correct the tilt state of the upper wing plate.

[0031] After the first correction is completed, the H-beam is transported through the laser rangefinder 602, and the upper and lower groups of laser rangefinders 602 detect the distance between the upper and lower wing plates of the H-beam. The consistency of the detected distance is used to determine whether the upper wing plate of the H-beam is bent inward. Once it is determined that the upper wing plate of the H-beam is uneven, on the one hand, the conveying speed of the H-beam is reduced by the conveying motor 103 to perform a low-speed secondary correction process, and on the other hand, the secondary correction unit 4 is started. When the H-beam passes through the secondary correction unit 4, the upper and lower rows of extrusion wheels 503 move in opposite directions under the push of the fifth hydraulic cylinder 508, so that the upper row of extrusion wheels 503 and the second pressure roller 404 can perform secondary correction on the upper wing plate under the joint action, and the lower row of extrusion wheels 503 and the conveying roller 102 can also correct the lower wing plate. After two corrections, the H-beam can have higher mechanical structural stability. Example 2

[0032] Example 2 discloses an H-beam wing plate precision correction machine that is further optimized based on the technical solution in Example 1. The similarities between it and Example 1 are not described again. This Example 2 focuses on optimizing the design of the detection mechanism 6.

[0033] Reference Figure 7 In this embodiment 2, the detection mechanism 6 includes an L-shaped bar 603 fixedly connected to the second horizontal frame 401, and then the mounting frame 601 is rotatably connected to the protruding end of the L-shaped bar 603. At the same time, a telescopic driving member 604 is rotatably connected to the L-shaped bar 603, and the telescopic driving member 604 can be a hydraulic telescopic rod or an electric telescopic rod, and then the end of the telescopic driving member 604 is connected to the mounting frame 601. At the same time, each group of laser rangefinders 602 at the upper and lower ends of the mounting frame 601 is provided with no less than two, and each group of laser rangefinders 602 is provided with three in this figure.

[0034] Through the structural design of the detection mechanism 6, the second embodiment can control the extension and retraction of the telescopic drive member 604 to make the mounting frame 601 rotate around the protruding end of the L-shaped bar 603, so that the row of laser rangefinders 602 can detect different positions in the width direction of the H-shaped steel wing plate, ensuring the accuracy of the detection result. In addition, when detecting H-shaped steel with wing plates of different widths, the rotation adjustment of the mounting frame 601 can also be used to make the row of laser rangefinders 602 able to measure different position points in the width direction of the wing plate as much as possible, so that the detection accuracy of the flatness of the H-shaped steel wing plate is higher and the application range is wider.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An H-shaped steel wing plate precision straightening machine, comprising a box seat and a control box, wherein a row of conveying rollers are rotatably arranged in the box seat, characterized in that: A primary correction unit and a secondary correction unit are respectively arranged on the left and right sides of the upper end of the box seat, and a detection mechanism for detecting the flatness of the upper and lower wing plates of the H-shaped steel is arranged between the primary correction unit and the secondary correction unit, and the detection mechanism is electrically connected to the control box; The primary correction unit comprises a first horizontal frame, in which a first pressing roller is arranged to work together with a conveying roller to correct the H-shaped steel wing plate, and a centering clamping wheel assembly acting on the H-shaped steel web is arranged at the lower left end of the first horizontal frame; The secondary correction unit includes a second cross frame, in which a second pressure roller acting on the upper wing plate of the H-shaped steel is arranged, and wing plate bending correction mechanisms are arranged at the front and rear ends below the second pressure roller, and the wing plate bending correction mechanism includes a fixedly arranged carrier box, and wheel seats are symmetrically arranged at the upper and lower ends of the carrier box, and the outer ends of the wheel seats are rotatably connected to extrusion wheels acting on the H-shaped steel wing plates, and a driving component is arranged in the carrier box to realize the upper and lower wheel seats approaching or moving away from each other.

2. The H-beam flange precision straightening machine according to claim 1 is characterized in that: The detection mechanism comprises a mounting frame, and vertically upward and downward laser rangefinders are respectively arranged at the upper and lower ends of the mounting frame, and the laser rangefinders are electrically connected to the control box.

3. The H-beam wing plate precision straightening machine according to claim 2 is characterized in that: The distances from the laser rangefinders at the upper and lower ends to the upper and lower wing plates of the H-shaped steel are set equal.

4. The H-beam flange precision straightening machine according to claim 2 or 3, characterized in that: The detection mechanism also includes an L-shaped bar fixedly connected to the second cross frame, one end of the mounting frame is rotatably connected to the L-shaped bar, the L-shaped bar is provided with a telescopic driving member for driving the mounting frame to rotate, and at least two laser rangefinders are provided at the upper and lower ends of the mounting frame.

5. The H-beam flange precision straightening machine according to claim 1 is characterized in that: The primary correction unit also includes a wheel frame arranged directly below the first pressure roller, the box seat is provided with a second hydraulic cylinder for driving the wheel frame to move up and down, and pressure wheels acting on the lower wing plate of the H-shaped steel are rotatably provided on both sides of the upper end of the wheel frame.

6. The H-beam flange precision straightening machine according to claim 1, characterized in that: The upper ends of the first and second horizontal frames are respectively provided with a first hydraulic cylinder and a fourth hydraulic cylinder, the lower end of the first hydraulic cylinder is connected to a first roller frame for assembling a first pressure roller, and the lower end of the fourth hydraulic cylinder is connected to a second roller frame for assembling a second pressure roller.

7. The H-beam flange precision straightening machine according to claim 1, characterized in that: A center clamping wheel assembly acting on the H-shaped steel web is also provided at the lower left end of the second cross frame. The center clamping wheel assembly includes a pushing frame symmetrically arranged front and rear and a third hydraulic cylinder for driving the two pushing frames to approach each other. Clamping wheels are rotatably provided on both pushing frames.

8. The H-beam flange precision straightening machine according to claim 1 is characterized in that: The upper and lower ends of the carrier box are provided with openings for extending the wheel seats, a partition is provided at one end of the inner end of the carrier box, a guide rod passing through the wheel seat is provided on the partition, and springs are connected between the partition and the two wheel seats. The driving assembly includes a fifth hydraulic cylinder arranged on the end face of the carrier box, the inner end of the fifth hydraulic cylinder extending into the carrier box is connected with an extrusion push block, and the inner surfaces of the two wheel seats are fixedly provided with inclined blocks that act on the extrusion push blocks.

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