A method for slowing down and damping the material during the stepping process of the loading platform

Abstract

The present invention discloses a method for deceleration and damping during the stepping process of a loading platform, which includes setting a predetermined value of a detection point during the stepping process of the loading platform; monitoring the state of a detection surface; and controlling the operating state of a driving component of the loading platform to achieve deceleration and damping. The stepping process of the loading platform includes starting a driving component; lifting steel at a rated speed; and, after decelerating and lifting steel, releasing steel at a rated speed, and then decelerating and releasing steel to complete a cycle action. By adding a detection surface and monitoring its state, the present invention can accurately identify its critical position during the billet feeding process, and decelerate and control its lifting speed, thereby extending the service life of the equipment and reducing maintenance workload and spare parts consumption.

Description

Technical Field

[0001] The invention relates to the technical field of billet feeding in the steel industry, and in particular to a method for slowing down and damping the speed of a feeding platform during its stepping process. Background Art

[0002] When the billet loading platform of the steel bar and wire production line is in the process of stepping, the movable beam rises from a low position to the same height as the fixed beam (lifting the billet on the fixed beam) and the movable beam carrying the billet descends from a high position to the same height as the fixed beam (placing the billet on the fixed beam). Since the total weight of the billet can reach nearly 20 tons, the billet bearing point will generate obvious vibration when it switches between the movable beam and the fixed beam. During continuous production, frequent vibrations will cause the fixed beam footing to loosen, the foundation to crack, and even affect the structural stability of the concrete platform of the plant, accompanied by relatively loud noise. Reduce the vibration and noise generated by lifting and placing steel during the operation of the loading platform to protect the safety of equipment, plant and employee health. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] In view of the problems existing in the prior art, the present invention is proposed.

[0005] Therefore, the technical problem to be solved by the present invention is that during the stepping process of the billet loading platform, obvious vibration will occur when the billet bearing point is switched between the movable beam and the fixed beam.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a method for slowing down and reducing vibration during the stepping process of a loading platform, comprising:

[0007] Setting a predetermined value of a detection point during the stepping process of the loading platform;

[0008] Conduct status monitoring on the detection surface;

[0009] Controlling the running state of the driving component of the loading platform to achieve deceleration and shock absorption;

[0010] The stepping process of the loading platform includes:

[0011] Start the drive component;

[0012] Lifting steel at rated speed; and,

[0013] After decelerating and lifting the steel, the steel is released at the rated speed, and then decelerated and released again to complete the cycle action;

[0014] The state monitoring of the detection surface is performed by using a detector to monitor the state of the detection surface. There are two detectors, one for monitoring the state of the lifting / releasing steel detection surface when the loading platform rotates forward, and the other for monitoring the state of the lifting / releasing steel detection surface when the loading platform rotates reversely;

[0015] The deceleration steel lifting is triggered by the detector, and the steel release deceleration signal is controlled by program delay;

[0016] The detection surface is an S-shaped detection plate, which is mounted on one end of the rotating shaft of the loading platform, and the S-shaped detection plate rotates with the rotation of the rotating shaft of the loading platform;

[0017] The predetermined detection point values ​​include the following nodes:

[0018] The detector detects the detection surface signal;

[0019] The moving beam lifts the billet;

[0020] The moving beam runs from the high position until its upper surface is 3 cm away from the upper surface of the fixed beam;

[0021] The movable beam places the steel billet onto the fixed beam.

[0022] As a preferred solution of the method for slowing down and damping the loading platform during the stepping process of the present invention, the installation process of the S-shaped detection plate includes:

[0023] The moving beam of the loading platform is controlled to move slowly by inching mode to obtain the best deceleration point in the process of decelerating steel lifting. When the moving beam runs from a low position to a point where its upper surface is 3 cm away from the upper surface of the fixed beam, it is the best deceleration point. According to the position of the rotating axis of the loading platform at the best deceleration point, an S-shaped detection plate is welded to ensure that the detector can detect the signal.

[0024] As a preferred solution of the method for decelerating and damping the loading platform during the stepping process described in the present invention, the two detectors respectively detect the rotation states of the convex end and the concave end of the S-shaped detection plate.

[0025] As a preferred solution of the method for deceleration and shock absorption during the stepping process of the loading platform described in the present invention, wherein: a central control processing module is used to control the operating state of the loading platform driving component, and the central control processing module includes a signal input module, a central controller, a frequency converter and a loading platform motor, the output end of the detector is electrically connected to the signal input module, the output end of the signal input module is electrically connected to the central controller, the output end of the central controller is electrically connected to the frequency converter, and the frequency converter is electrically connected to the loading platform motor.

[0026] As a preferred solution of the method for slowing down and damping the speed of the loading platform during the stepping process of the present invention, it includes:

[0027] The loading platform starts and runs at rated speed;

[0028] When the signal is detected, the program starts timing for 0.5 seconds, during which the speed of the loading platform is reduced to 20%;

[0029] The moving beam has lifted the billet, and the loading platform speed has returned to 100%, with the timing at 2.2 seconds;

[0030] The moving beam runs from the high position until its upper surface is 3 cm away from the upper surface of the fixed beam, and the speed of the loading platform is reduced to 20%, and the timing is 2.7 seconds;

[0031] The moving beam has placed the billet on the fixed beam, and the loading platform speed has been restored to 100%;

[0032] The control process when the loading platform is reversed is the same as above.

[0033] The beneficial effects of the present invention are as follows: by increasing the detection surface and monitoring its status, the present invention can accurately identify the critical position during the billet feeding process and decelerate the lifting speed, thereby extending the service life of the equipment and reducing the maintenance workload and spare parts consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0035] Figure 1 It is a schematic diagram of the step-by-step loading process of the stage in an embodiment of the present invention.

[0036] Figure 2 It is a PLC control flow chart in an embodiment of the present invention.

[0037] Figure 3 It is a PLC program diagram in an embodiment of the present invention.

[0038] Figure 4 Schematic diagram of the installation position of the S-shaped detection plate and the laser detector in an embodiment of the present invention.

[0039] Figure 5 The figure is a flow chart of the step-by-step loading steps of the stage in the embodiment of the present invention. DETAILED DESCRIPTION

[0040] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0041] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0042] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0043] Example 1

[0044] Reference Figure 1 , 2 4 is the first embodiment of the present invention, which provides a method for slowing down and reducing vibration during the stepping process of a loading platform, comprising:

[0045] S1: Setting the predetermined value of the detection point during the stepping process of the loading platform;

[0046] Through calculation and measurement, the critical points in the stepping process of the loading platform are captured, and the specific operation nodes for deceleration are determined during the process of lifting and placing steel billets on the loading platform, as well as the actual distance between the moving beam and the fixed beam in the platform at this time node. The actual values ​​obtained are input into the electronic control device to capture this state during the use of the equipment and change the lifting or placing speed of the equipment, thereby achieving deceleration and shock absorption.

[0047] S2: monitor the status of the detection surface;

[0048] The detection surface is an S-shaped detection plate, which is installed at one end of the rotating shaft of the loading platform. The S-shaped detection plate rotates with the rotation of the rotating shaft of the loading platform. The design and production of the S-shaped detection plate must realize the capture of the two deceleration signals required at the two time points of lifting and placing steel. When installed on the side of the rotating shaft of the loading platform, the installation angle must match the angle of the shaft when lifting and placing steel, ensuring the accurate timing of capturing the two deceleration signals;

[0049] The state monitoring of the detection surface is performed by using a detector. There are two detectors, one for monitoring the state of the lifting / releasing steel detection surface when the loading platform rotates forward, and the other for monitoring the state of the lifting / releasing steel detection surface when the loading platform rotates reversely.

[0050] The detector uses a laser detector, which makes it more convenient to identify the position of the induction S-shaped detection plate and has lower usage costs.

[0051] S3: Controlling the operating state of the driving component of the loading platform to achieve deceleration and shock absorption.

[0052] A central control processing module is used to control the operating status of the loading platform driving component. The central control processing module includes a signal input module, a central controller, a frequency converter and a loading platform motor. The output end of the detector is electrically connected to the signal input module, the output end of the signal input module is electrically connected to the central controller, the output end of the central controller is electrically connected to the frequency converter, and the frequency converter is electrically connected to the loading platform motor.

[0053] The signal input module is a PLC signal input module, and the central controller is a PLC CPU module.

[0054] During the step-by-step loading process of the loading platform, the real-time status of the S-shaped detection plate is monitored by the detector. After capturing the predetermined detection point, the signal transmission is processed through the PLC signal input module, PLC CPU module, and frequency converter, and finally output to the loading platform motor to control the speed of the loading platform motor, thereby achieving deceleration and vibration reduction during the step-by-step loading process of the steel billet.

[0055] Example 2

[0056] Reference Figures 1 to 5 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0057] The stepping process of the loading platform includes:

[0058] Start the drive component;

[0059] The feeding platform motor is started to rotate the rotating shaft.

[0060] Use rated speed to lift steel;

[0061] The rotation of the rotating shaft drives the movable beam supporting cam to rotate, and the rotation of the movable beam supporting cam drives the loading platform to move, so as to load the steel billet. When the rotating shaft rotates, it drives the S-shaped detection plate to rotate to lift the steel at a uniform speed.

[0062] After decelerating and lifting the steel, the steel is released at the rated speed, and then decelerated again to complete the cycle.

[0063] Before the moving beam contacts the steel billet on the fixed beam, the detection surface of the S-shaped detection plate is captured by the laser detector and sent to the PLC controller. The signal triggers the deceleration function of the program. The PLC program uses the program's hold-on delay to send a 20% set speed to the inverter during this period to decelerate the loading platform, so that when the moving beam contacts the steel billet, the loading platform can slowly and steadily lift the steel, achieving the function of reducing vibration and noise. After the steel billet is lifted, the loading platform restores 100% of the set speed. When it runs to put the steel billet back to the fixed beam, the program triggers the deceleration of the loading platform again through delay calculation, so that the moving beam slowly and steadily puts the steel on the fixed beam, achieving the function of reducing vibration and noise.

[0064] The detection surface is an S-shaped detection plate, which is installed at one end of the rotating shaft of the loading platform, and the S-shaped detection plate rotates with the rotation of the rotating shaft of the loading platform.

[0065] The state of the detection surface is monitored by using a laser detector. There are two laser detectors, one for monitoring the state of the lifting / lowering steel detection surface when the loading platform rotates forward, and the other for monitoring the state of the lifting / lowering steel detection surface when the loading platform rotates reversely. The rotation states of the convex end and the concave end of the S-shaped detection plate are detected respectively.

[0066] The deceleration of steel lifting is triggered by a laser detector, and the deceleration signal for steel release is controlled by program delay.

[0067] The detection point preset values ​​include the following nodes,

[0068] The laser detector detects the detection surface signal;

[0069] The moving beam lifts the billet;

[0070] The moving beam runs from the high position until its upper surface is 3 cm away from the upper surface of the fixed beam;

[0071] The movable beam places the steel billet onto the fixed beam.

[0072] The specific data of the preset value of the detection point is to capture the specific data of the key nodes during the normal operation of the equipment. In order to ensure the accurate timing of steel lifting deceleration, the moving beam of the loading platform is controlled to move slowly by jogging. When the moving beam runs from a low position to its upper surface 3cm away from the upper surface of the fixed beam, it is the best deceleration point. According to the position of the rotating axis of the loading platform at this time, the S-shaped detection plate is welded to ensure that the laser detector can detect the signal. When the laser detector detects the signal, the program starts timing for 0.5 seconds. During this period, the speed of the loading platform is reduced to 20%. At this time, the moving beam has lifted the billet and the speed of the loading platform is restored to 100%. When the timing is 2.2 seconds, the moving beam runs from a high position to its upper surface 3cm away from the upper surface of the fixed beam. The speed of the loading platform is reduced to 20%. When the timing is 2.7 seconds, the moving beam has placed the billet on the fixed beam and the speed of the loading platform is restored to 100%. The control process when the loading platform is reversed is the same as above.

[0073] Determine the specific time nodes in a single batch operation, select the optimal deceleration node, input the specific time data and distance data into the control program, and in subsequent repeated operations, perform deceleration control according to this node, thereby achieving the effect of deceleration and shock absorption during the stepping process of the loading platform.

[0074] The central control processing module is used to control the operating status of the loading platform driving components. The central control processing module includes a PLC signal input module, a PLC CPU module, a frequency converter and a loading platform motor. The output end of the laser detector is electrically connected to the PLC signal input module, the output end of the PLC signal input module is electrically connected to the PLC CPU module, the output end of the PLC CPU module is electrically connected to the frequency converter, and the frequency converter is electrically connected to the loading platform motor.

[0075] The deceleration process includes:

[0076] (1) The loading platform starts and runs at rated speed;

[0077] (2) When the laser detector detects the S-shaped detection plate signal, the program starts timing for 0.5 seconds, during which the loading platform speed is reduced to 20%;

[0078] (3) The moving beam has lifted the billet, the loading platform speed is restored to 100%, and the timing is 2.2 seconds;

[0079] (4) The moving beam moves from the high position until its upper surface is 3 cm away from the upper surface of the fixed beam, and the loading platform speed is reduced to 20%, with the timing at 2.7 seconds;

[0080] (5) The moving beam has placed the billet on the fixed beam, and the loading platform speed is restored to 100%;

[0081] (6) The control process when the loading platform is reversed is the same as above.

[0082] By adopting the slow speed damping method to handle the loading and unloading process of the steel billet, the equipment failure rate is effectively reduced, and the following economic benefits are achieved:

[0083]

[0084] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0085] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0086] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0087] 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 preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A method for slowing down and damping the material during the stepping process of a loading platform, characterized in that: Setting a predetermined value of a detection point during the stepping process of the loading platform; Conduct status monitoring on the detection surface; Controlling the running state of the driving component of the loading platform to achieve deceleration and shock absorption; The stepping process of the loading platform includes: Start the drive component; Use rated speed to lift steel; as well as, After decelerating and lifting the steel, the steel is released at the rated speed, and then decelerated and released again to complete the cycle action; The state monitoring of the detection surface is performed by using a detector to monitor the state of the detection surface. There are two detectors, one for monitoring the state of the lifting / releasing steel detection surface when the loading platform rotates forward, and the other for monitoring the state of the lifting / releasing steel detection surface when the loading platform rotates reversely; The deceleration steel lifting is triggered by the detector, and the steel release deceleration signal is controlled by program delay; The detection surface is an S-shaped detection plate, which is mounted on one end of the rotating shaft of the loading platform, and the S-shaped detection plate rotates with the rotation of the rotating shaft of the loading platform; The predetermined detection point values ​​include the following nodes: The detector detects the detection surface signal; The moving beam lifts the billet; The moving beam runs from the high position until its upper surface is 3 cm away from the upper surface of the fixed beam; The movable beam places the steel billet onto the fixed beam.

2. The method for slowing down and damping the material loading platform during stepping as claimed in claim 1, characterized in that: The installation process of the S-type detection board includes: The moving beam of the loading platform is controlled to move slowly by inching mode to obtain the best deceleration point in the process of decelerating steel lifting. When the moving beam runs from a low position to a point where its upper surface is 3 cm away from the upper surface of the fixed beam, it is the best deceleration point. According to the position of the rotating axis of the loading platform at the best deceleration point, an S-shaped detection plate is welded to ensure that the detector can detect the signal.

3. The method for slowing down and damping the material loading platform during stepping as claimed in claim 2, characterized in that: The two detectors detect the rotation states of the convex end and the concave end of the S-shaped detection plate respectively.

4. The method for slowing down and damping the material loading platform during stepping as claimed in claim 1, characterized in that: A central control processing module is used to control the operating status of the loading platform driving component. The central control processing module includes a signal input module, a central controller, a frequency converter and a loading platform motor. The output end of the detector is electrically connected to the signal input module, the output end of the signal input module is electrically connected to the central controller, the output end of the central controller is electrically connected to the frequency converter, and the frequency converter is electrically connected to the loading platform motor.

5. The method for slowing down and damping the material loading platform during stepping as claimed in claim 4, characterized in that: include, The loading platform starts and runs at rated speed; When the signal is detected, the program starts timing for 0.5 seconds, during which the speed of the loading platform is reduced to 20%; The moving beam has lifted the billet, and the loading platform speed has returned to 100%, with the timing at 2.2 seconds; The moving beam runs from the high position until its upper surface is 3 cm away from the upper surface of the fixed beam, and the speed of the loading platform is reduced to 20%, and the timing is 2.7 seconds; The moving beam has placed the billet on the fixed beam, and the loading platform speed has been restored to 100%; The control process when the loading platform is reversed is the same as above.

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