Multi-stage adjusting mechanism for prestress positioning mesh

Abstract

The invention relates to the technical field of prestress positioning mesh welding, in particular to a multistage adjusting mechanism for prestress positioning meshes, which is provided with a welding control module, an information capture module, a displacement analysis module and a welding correction module. The welding unit is used for welding the crossed position of the longitudinal steel bar and the transverse steel bar, the information capturing module is used for drawing a vibration intensity change curve, and the abnormity analysis unit is used for judging whether the vibration margin abnormity phenomenon exists in the crossed position or not and determining the vibration margin abnormity type of the crossed position. And the welding correction mode is selected according to the type of the welding correction module, so that rapid abnormal risk identification according to the actual situation in the reinforcing steel bar welding and attaching process is realized, abnormal welding positions are classified, the welding correction mode is adaptively adjusted, and the production efficiency and the welding reliability of the prestress positioning mesh are improved.

Description

Technical Field

[0001] The invention relates to the technical field of prestressed positioning mesh welding, and in particular to a multi-stage adjustment mechanism for prestressed positioning mesh. Background Art

[0002] In modern construction projects, bridge construction and many infrastructure projects, prestressed positioning mesh plays a key connecting and supporting role, which directly affects the stability and overall performance of the project. With the increasing diversification and refinement of building structure design, the requirements for prestressed positioning mesh have become more complex and stringent. Different construction projects and different structural parts may require prestressed positioning meshes of different specifications, different spacings and different strength characteristics. In the large-scale production process of prestressed positioning meshes, if the various parameters cannot be flexibly adjusted in real time, the production process is prone to bottlenecks and it is difficult to achieve continuous and automated production. At the same time, at the construction site, if the prestressed positioning mesh cannot be conveniently fine-tuned to adapt to the actual installation environment and structural requirements, it will increase the difficulty of construction, extend the construction period, and may even affect the safety and reliability of the entire building structure. Therefore, in the process of steel bar welding, it is a technical problem that needs to be solved urgently to quickly and accurately adjust the welding method and improve the production efficiency and welding reliability of prestressed positioning meshes.

[0003] For example, the Chinese patent authorization announcement number: CN110405386B, the invention discloses a CNC fully automatic steel bar welding mesh welding machine, including a longitudinal bar feeding mechanism, a welding mechanism, a transverse bar interval blanking mechanism and a steel bar welding mesh conveying mechanism arranged in sequence, and a longitudinal bar synchronous conveying mechanism is also arranged on one side of the longitudinal bar feeding mechanism. The invention can realize the synchronization of longitudinal bar feeding during the longitudinal bar feeding process, avoid the situation that one end of the local longitudinal bar on the welded steel bar mesh extends out of the entire steel bar mesh while the other end is retracted into the steel bar mesh, improve the yield rate, and can realize rough inspection after welding to find the steel bar mesh that needs to be repaired, reducing the man-hours and processes of subsequent quality inspection.

[0004] The prior art still has the following problems:

[0005] The existing technology does not take into account the influence of the bonding state between steel bars on the welding effect during the steel bar welding process. The existing technology cannot quickly identify abnormal risks according to the actual situation during the steel bar welding process, cannot classify and process abnormal welding positions, and cannot adaptively adjust the welding correction method, which affects the production efficiency and welding reliability of the prestressed positioning mesh. Summary of the invention

[0006] To this end, the present invention provides a multi-level adjustment mechanism for prestressed positioning meshes, so as to overcome the problems in the prior art that abnormal risks cannot be quickly identified according to the actual situation during the steel bar welding and bonding process, abnormal welding positions cannot be classified and processed, and the welding correction method cannot be adaptively adjusted.

[0007] To achieve the above object, the present invention provides a multi-stage adjustment mechanism for a prestressed positioning mesh, comprising:

[0008] A welding control module, comprising a platform for pulling the longitudinal steel bars to move, a laying unit for laying the transverse steel bars on the longitudinal steel bars, and a welding unit for welding the intersection of the longitudinal steel bars and the transverse steel bars;

[0009] A plurality of groups of clamps for fixing the transverse steel bars are arranged on both sides of the carrier;

[0010] An information capture module, which is connected to the welding control module and is used to capture the vibration intensity of the cross position during the steel bar bonding cycle to draw a vibration intensity change curve;

[0011] a displacement analysis module, which is connected to the information capture module and includes an abnormality analysis unit and an abnormality classification unit, wherein the abnormality analysis unit is used to determine whether there is a vibration margin abnormality at the intersection position according to the signal intensity change of the vibration intensity change curve;

[0012] The abnormality classification unit is used to determine the vibration margin abnormality category of the intersection position according to the characterizing sub-parameter of the vibration intensity variation curve;

[0013] Wherein, the characterization sub-parameters include several peak signal intensities of the vibration intensity variation curve;

[0014] A welding correction module, which is connected to the displacement analysis module and the welding control module respectively, is used to select a welding correction method according to the abnormal vibration margin category, including:

[0015] Determine the transverse reinforcement corresponding to the intersection position, and adjust the spacing distance of the clamps at both ends of the transverse reinforcement;

[0016] Or, the welding time of the welding unit at the intersection position is corrected.

[0017] Furthermore, the information capture module is used to draw a vibration intensity change curve, wherein:

[0018] The vibration intensity variation curve establishes a rectangular coordinate system with the time of the steel bar bonding cycle as the horizontal axis and the vibration signal intensity in the steel bar bonding cycle as the vertical axis.

[0019] Furthermore, the abnormality analysis unit is also used to obtain the margin coefficient of the cross position, wherein:

[0020] Obtain a vibration intensity variation curve corresponding to the cross position;

[0021] The duration of the vibration signal intensity greater than the preset vibration amplitude reference value on the horizontal axis of the rectangular coordinate system is determined as the margin coefficient of the intersection position.

[0022] Furthermore, the abnormality analysis unit determines whether there is an abnormal vibration margin phenomenon at the intersection position, wherein:

[0023] If the margin coefficient at the intersection meets the normal condition of steel bar bonding, the abnormality analysis unit determines that there is no abnormal vibration margin phenomenon at the intersection;

[0024] If the margin coefficient at the intersection does not meet the normal condition for steel bar bonding, the abnormality analysis unit determines that there is an abnormal vibration margin phenomenon at the intersection;

[0025] Among them, the normal condition for the steel bar fitting is that the margin coefficient at the intersection position does not exceed a preset margin threshold.

[0026] Furthermore, the abnormal classification unit is also used to obtain the characterization sub-parameter, wherein:

[0027] Obtain a vibration intensity variation curve corresponding to a cross position where an abnormal vibration margin phenomenon exists;

[0028] The difference between the maximum value of the vibration signal intensity corresponding to the peak in the vibration intensity variation curve and the average value of the vibration signal intensity corresponding to several peaks is determined as the characterizing sub-parameter of the intersection position.

[0029] Further, the abnormality classification unit determines the vibration margin abnormality category of the cross position, wherein:

[0030] If the characterizing sub-parameter of the cross position where the vibration margin abnormality exists does not meet the vibration margin weak dominant condition, the abnormality classification unit determines the vibration margin abnormality category of the cross position as the vibration margin lateral abnormality category;

[0031] If the characterizing sub-parameter of the cross position where the vibration margin abnormality exists meets the vibration margin weak dominant condition, the abnormality classification unit determines the vibration margin abnormality category of the cross position as the vibration margin longitudinal abnormality category.

[0032] Furthermore, the weakly dominant condition of the vibration margin is that the characterization sub-parameter corresponding to the intersection position does not exceed a preset characterization sub-parameter threshold.

[0033] Furthermore, the welding correction module selects a welding correction method, wherein:

[0034] If the vibration margin abnormality category is the vibration margin transverse abnormality category, the welding correction method selected by the welding correction module is to determine the transverse steel bar corresponding to the cross position and adjust the spacing distance of the clamps at both ends of the transverse steel bar;

[0035] If the vibration margin abnormality category is the vibration margin longitudinal abnormality category, the welding correction method selected by the welding correction module is to correct the welding time of the welding unit at the intersection position.

[0036] Furthermore, the welding correction module adjusts the spacing distance of the clamps at both ends of the transverse steel bar based on the characterization sub-parameter corresponding to the cross position;

[0037] Among them, the adjustment amount of the interval distance is positively correlated with the characterization sub-parameter.

[0038] Furthermore, the welding unit adjusts a correction amount for the welding time length at the intersection position based on an average value of vibration signal intensities corresponding to several peaks in a vibration intensity variation curve corresponding to the intersection position, and the correction amount is positively correlated with the average value.

[0039] Compared with the prior art, the beneficial effect of the present invention lies in that a welding control module, an information capture module, a displacement analysis module and a welding correction module are provided in the present invention, and the transverse steel bars are laid on the longitudinal steel bars by pulling the longitudinal steel bars by the laying unit, and the intersection position of the longitudinal steel bars and the transverse steel bars is welded by the welding unit, and a vibration intensity change curve is drawn by the information capture module, and the abnormal analysis unit is used to determine whether there is an abnormal vibration margin phenomenon at the intersection position and determine the abnormal vibration margin category at the intersection position, and the welding correction method is selected by the welding correction module category, thereby realizing rapid abnormal risk identification according to the actual situation in the steel bar welding and bonding process, classifying and processing abnormal welding positions, adaptively adjusting the welding correction method, and improving the production efficiency and welding reliability of the prestressed positioning mesh.

[0040] In particular, the present invention determines whether there is an abnormal vibration margin phenomenon at the intersection position through the change of signal intensity of the vibration intensity change curve. It can be understood that when the transverse steel bar and the longitudinal steel bar are bonded at the intersection position, vibration will be generated due to the interaction. If the steel bar bonding process is relatively smooth, the vibration intensity change curve will show a more regular characteristic, the curve fluctuation is small, and the vibration intensity will gradually tend to a stable value. If the steel bar is placed inaccurately or there is a vibration margin causing the bonding position to shift, the contact between the steel bars will be uneven during bonding, and collision or friction may occur locally first, resulting in large and irregular fluctuations in vibration intensity, and there will be sudden peaks. Due to the uneven force caused by the offset, the vibration intensity is also difficult to stabilize, and will continue to fluctuate by a large amplitude. The present invention determines whether there is an abnormal vibration margin phenomenon through the change of signal intensity, and further realizes rapid abnormal risk identification according to the actual situation during the steel bar welding and bonding process, thereby improving the production efficiency and welding reliability of the prestressed positioning mesh.

[0041] In particular, the present invention determines the abnormal category of the vibration margin at the intersection position through the characterizing sub-parameter of the vibration intensity change curve. It can be understood that in the bonding process of the cross-position of the steel bars, the peak in the vibration intensity change curve reflects the change in vibration intensity caused by vibration, and the difference reflects the peak characteristic of the vibration signal and the deviation of the overall energy distribution. The maximum value of the vibration signal intensity corresponding to the peak represents the energy release when the vibration is most intense, and the average value of the vibration signal intensity corresponding to several peaks reflects the average energy level of the vibration in a stage. When the bonded steel bars are laterally offset, the friction between the transverse steel bars and the longitudinal steel bars will cause a large vibration due to the lateral offset of the position of the steel bars when they are bonded, and there will be an abnormally prominent vibration peak in the vibration intensity change curve. When the steel bars are longitudinally offset, the tightness of the steel bars at the bonding point is low, the vibration continues for a long time, and the fluctuation in the vibration intensity change curve is not obvious. Therefore, it is realized that the abnormal risk is quickly identified according to the actual situation in the steel bar welding bonding process, the abnormal welding positions are classified and processed, and the production efficiency and welding reliability of the prestressed positioning mesh are improved.

[0042] In particular, the present invention adjusts the spacing of the clamps at both ends of the transverse reinforcement in the case of a transverse abnormal vibration margin. It can be understood that in the case of a transverse abnormal vibration margin, the transverse reinforcement at the intersection will be offset, and the offset reinforcement will cause poor fit at the intersection, which will easily lead to stress concentration and uneven welds during welding, seriously weakening the strength and stability of the welded joint. Adjusting the spacing of the clamps at both ends of the transverse reinforcement can make the transverse and longitudinal reinforcements accurately docked at the intersection, forming a uniform and stable welding surface, which can significantly improve the welding quality, and then realize the adaptive adjustment of the welding correction method, and improve the production efficiency and welding reliability of the prestressed positioning mesh.

[0043] In particular, the present invention corrects the welding time of the intersection position under the condition of the longitudinal abnormality category of the vibration margin. It can be understood that, under the condition of the longitudinal abnormality category of the vibration margin, the steel bars are not tightly fitted. The failure of the steel bars to be tightly fitted will lead to insufficient formation of the welding molten pool and uneven filling of the weld metal, which will reduce the strength and density of the weld joint and make it difficult to withstand the expected load and stress. By correcting the welding time, the welding time can be appropriately extended according to the degree of fitting, so that the welding heat can fully act on the contact gap, promoting better flow and filling of the weld metal, enhancing the fusion effect, improving the integrity and mechanical properties of the weld joint, and ensuring the stability and reliability of the entire steel structure. Furthermore, the welding correction method can be adaptively adjusted to improve the production efficiency and welding reliability of the prestressed positioning mesh.

[0044] In particular, the adjustment amount of the spacing between the clamps in the present invention is positively correlated with the characterization sub-parameter. It can be understood that the larger the characterization sub-parameter, the greater the difference between the maximum value of the vibration signal intensity corresponding to the peak in the vibration intensity change curve and the average value of the vibration signal intensity corresponding to several peaks, the greater the lateral offset of the steel bars during bonding, and the greater the adjustment amount required to adjust the offset steel bars. In turn, the welding correction method is adaptively adjusted, the offset steel bars are adjusted, and the production efficiency and welding reliability of the prestressed positioning mesh are improved.

[0045] In particular, the correction amount of the welding time at the cross position in the present invention is positively correlated with the average value of the vibration signal intensities corresponding to several peaks in the vibration intensity change curve. It can be understood that the larger the average value of the vibration signal intensities corresponding to several peaks in the vibration intensity change curve, the larger the longitudinal offset of the steel bars during bonding, the worse the tightness of the bonding between the horizontal and vertical steel bars, and the greater the demand for correction amount of the welding time at the cross position. Furthermore, an adaptive adjustment method of welding correction is realized, the offset steel bars are adjusted, and the production efficiency and welding reliability of the prestressed positioning mesh are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a functional block diagram of a multi-stage adjustment mechanism for a prestressed positioning mesh according to an embodiment of the present invention;

[0047] Figure 2 A logic flow chart of the abnormality analysis unit of the embodiment of the present invention for determining whether there is an abnormal vibration margin phenomenon at the cross position;

[0048] Figure 3 The present invention is a logic flow chart of an abnormality classification unit for determining a vibration margin abnormality category at a crossover position according to an embodiment of the present invention.

[0049] Figure 4A logic flow chart for selecting a welding correction method for a welding correction module according to an embodiment of the present invention. DETAILED DESCRIPTION

[0050] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0051] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0052] It should be noted that, in the description of the present invention, terms such as "upper", "lower", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0053] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation" 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 an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] See also Figure 1 As shown, it is a functional block diagram of a multi-stage adjustment mechanism for a prestressed positioning mesh according to an embodiment of the present invention. A multi-stage adjustment mechanism for a prestressed positioning mesh according to the present invention comprises:

[0055] A welding control module, comprising a platform for pulling the longitudinal steel bars to move, a laying unit for laying the transverse steel bars on the longitudinal steel bars, and a welding unit for welding the intersection of the longitudinal steel bars and the transverse steel bars;

[0056] A plurality of groups of clamps for fixing the transverse steel bars are arranged on both sides of the carrier;

[0057] Specifically, the present invention does not limit the specific structure of the welding control module. Preferably, it can be a butt welding machine, which clamps the steel bars to be welded on the electrode clamp, and fuses the cross welding points of the steel bars together through a low-voltage, high-current power supply to complete the welding process.

[0058] An information capture module, which is connected to the welding control module and is used to capture the vibration intensity of the cross position during the steel bar bonding cycle to draw a vibration intensity change curve;

[0059] Specifically, the present invention does not limit the specific structure of the information capture module. Preferably, it can be a vibration sensor connected to data processing software, which captures the vibration intensity signal of the steel bar bonding period through the vibration sensor, performs data preprocessing on the collected digital signal, removes high-frequency interference, and draws a vibration intensity change curve, which will not be repeated here.

[0060] Specifically, the steel bar bonding cycle is the process in which the laying unit lays the transverse steel bars onto the longitudinal steel bars.

[0061] a displacement analysis module, which is connected to the information capture module and includes an abnormality analysis unit and an abnormality classification unit, wherein the abnormality analysis unit is used to determine whether there is a vibration margin abnormality at the intersection position according to the signal intensity change of the vibration intensity change curve;

[0062] Specifically, the present invention does not limit the specific structure of the displacement analysis module. Preferably, it can be constructed using logic components to determine abnormal vibration margin phenomena based on the vibration intensity change curve. The logic components can be field programmable logic components, microprocessors, processors used in computers, etc., which will not be repeated here.

[0063] The abnormality classification unit is used to determine the vibration margin abnormality category of the intersection position according to the characterizing sub-parameter of the vibration intensity variation curve;

[0064] Wherein, the characterization sub-parameters include several peak signal intensities of the vibration intensity variation curve;

[0065] A welding correction module, which is connected to the displacement analysis module and the welding control module respectively, is used to select a welding correction method according to the abnormal vibration margin category, including:

[0066] Determine the transverse reinforcement corresponding to the intersection position, and adjust the spacing distance of the clamps at both ends of the transverse reinforcement;

[0067] Or, the welding time of the welding unit at the intersection position is corrected.

[0068] Specifically, the present invention does not limit the specific structure of the welding correction module. Preferably, it can be constructed using logic components, and the welding correction method is selected according to the vibration margin abnormality category. The logic component can be a field programmable logic component, a microprocessor, a processor used in a computer, etc., which will not be repeated here.

[0069] Specifically, the information capture module is used to draw a vibration intensity change curve, wherein:

[0070] The vibration intensity variation curve establishes a rectangular coordinate system with the time of the steel bar bonding cycle as the horizontal axis and the vibration signal intensity in the steel bar bonding cycle as the vertical axis.

[0071] Specifically, the abnormality analysis unit is also used to obtain the margin coefficient of the cross position, wherein:

[0072] Obtain a vibration intensity variation curve corresponding to the cross position;

[0073] The duration of the vibration signal intensity greater than the preset vibration amplitude reference value on the horizontal axis of the rectangular coordinate system is determined as the margin coefficient of the intersection position.

[0074] Specifically, the preset vibration amplitude reference value can be calculated by technicians in this field based on preliminary tests of the current prestressed positioning mesh welding conditions. Several vibration amplitude values ​​with a preset interval time are obtained through a vibration amplitude monitor, and the average value of several vibration amplitude values ​​is determined as the vibration amplitude reference value. Preferably, the vibration amplitude value is recorded once every 2 seconds, and the vibration amplitude reference value can be 0.25cm.

[0075] Specifically, see Figure 2 As shown, it is a logic flow chart of the abnormality analysis unit of the embodiment of the present invention for determining whether there is an abnormal vibration margin phenomenon at the cross position, wherein the abnormality analysis unit determines whether there is an abnormal vibration margin phenomenon at the cross position, wherein:

[0076] If the margin coefficient at the intersection meets the normal condition of steel bar bonding, the abnormality analysis unit determines that there is no abnormal vibration margin phenomenon at the intersection;

[0077] If the margin coefficient at the intersection does not meet the normal condition for steel bar bonding, the abnormality analysis unit determines that there is an abnormal vibration margin phenomenon at the intersection;

[0078] Among them, the normal condition for the steel bar fitting is that the margin coefficient at the intersection position does not exceed a preset margin threshold.

[0079] Specifically, the preset margin threshold may be set by those skilled in the art according to the actual diameter of the steel bar. Preferably, when the diameter of the steel bar is 30 mm, the margin threshold may be 2s.

[0080] Specifically, the present invention determines whether there is an abnormal vibration margin phenomenon at the intersection position through the change of signal intensity of the vibration intensity change curve. It can be understood that when the transverse steel bar and the longitudinal steel bar are bonded at the intersection position, vibration will be generated due to the interaction. If the steel bar bonding process is relatively smooth, the vibration intensity change curve will show a more regular characteristic, the curve fluctuation is small, and the vibration intensity will gradually tend to a stable value. If the steel bar is placed inaccurately or there is a vibration margin causing the bonding position to shift, the contact between the steel bars will be uneven during bonding, and collision or friction may occur locally first, resulting in large and irregular fluctuations in vibration intensity, and sudden peaks. Due to the uneven force caused by the offset, the vibration intensity is also difficult to stabilize, and will continue to fluctuate by a large amplitude. The present invention determines whether there is an abnormal vibration margin phenomenon through the change of signal intensity, and further realizes rapid abnormal risk identification according to the actual situation during the steel bar welding and bonding process, thereby improving the production efficiency and welding reliability of the prestressed positioning mesh.

[0081] Specifically, the abnormal classification unit is also used to obtain the characterization sub-parameter, wherein:

[0082] Obtain a vibration intensity variation curve corresponding to a cross position where an abnormal vibration margin phenomenon exists;

[0083] The difference between the maximum value of the vibration signal intensity corresponding to the peak in the vibration intensity variation curve and the average value of the vibration signal intensity corresponding to several peaks is determined as the characterizing sub-parameter of the intersection position.

[0084] Specifically, see Figure 3 As shown, it is a logic flow chart of the abnormal classification unit of the embodiment of the present invention determining the abnormal category of the vibration margin at the cross position, wherein the abnormal classification unit determines the abnormal category of the vibration margin at the cross position, wherein:

[0085] If the characterizing sub-parameter of the cross position where the vibration margin abnormality exists does not meet the vibration margin weak dominant condition, the abnormality classification unit determines the vibration margin abnormality category of the cross position as the vibration margin lateral abnormality category;

[0086] If the characterizing sub-parameter of the cross position where the vibration margin abnormality exists meets the vibration margin weak dominant condition, the abnormality classification unit determines the vibration margin abnormality category of the cross position as the vibration margin longitudinal abnormality category.

[0087] Specifically, the weakly dominant condition of the vibration margin is that the characterization sub-parameter corresponding to the cross position does not exceed a preset characterization sub-parameter threshold.

[0088] Specifically, the preset characterization sub-parameter threshold value can be set by technical personnel in this field according to the actual diameter of the steel bar. Preferably, when the diameter of the steel bar is 30 mm, the characterization sub-parameter threshold value can be 0.35 cm.

[0089] Specifically, the present invention determines the abnormal category of the vibration margin at the intersection position through the characterizing sub-parameter of the vibration intensity change curve. It can be understood that in the bonding process of the cross-position of the steel bars, the peak in the vibration intensity change curve reflects the change in vibration intensity caused by vibration, and the difference reflects the peak characteristic of the vibration signal and the deviation of the overall energy distribution. The maximum value of the vibration signal intensity corresponding to the peak represents the energy release when the vibration is most intense, and the average value of the vibration signal intensity corresponding to several peaks reflects the average energy level of the vibration in a stage. When the bonded steel bars are laterally offset, the friction between the transverse steel bars and the longitudinal steel bars will cause a large vibration due to the lateral offset of the position of the steel bars when they are bonded, and there will be an abnormally prominent vibration peak in the vibration intensity change curve. When the steel bars are longitudinally offset, the tightness of the steel bars at the bonding point is low, the vibration continues for a long time, and the fluctuation in the vibration intensity change curve is not obvious. Therefore, it is realized that the abnormal risk is quickly identified according to the actual situation in the steel bar welding bonding process, and the abnormal welding positions are classified and processed, so as to improve the production efficiency and welding reliability of the prestressed positioning mesh.

[0090] Specifically, see Figure 4 As shown, it is a logic flow chart of the welding correction module selecting the welding correction method according to an embodiment of the present invention. The welding correction module selects the welding correction method, wherein:

[0091] If the vibration margin abnormality category is the vibration margin transverse abnormality category, the welding correction method selected by the welding correction module is to determine the transverse steel bar corresponding to the cross position and adjust the spacing distance of the clamps at both ends of the transverse steel bar;

[0092] If the vibration margin abnormality category is the vibration margin longitudinal abnormality category, the welding correction method selected by the welding correction module is to correct the welding time of the welding unit at the intersection position.

[0093] Specifically, the present invention adjusts the spacing of the clamps at both ends of the transverse reinforcement in the case of a transverse abnormal vibration margin. It can be understood that in the case of a transverse abnormal vibration margin, the transverse reinforcement at the intersection will be offset, and the offset reinforcement will cause poor fit at the intersection, which will easily lead to stress concentration and uneven welds during welding, seriously weakening the strength and stability of the welded joint. Adjusting the spacing of the clamps at both ends of the transverse reinforcement can make the transverse and longitudinal reinforcements accurately docked at the intersection, forming a uniform and stable welding surface, which can significantly improve the welding quality, and then realize the adaptive adjustment of the welding correction method, and improve the production efficiency and welding reliability of the prestressed positioning mesh.

[0094] Specifically, the present invention corrects the welding time of the intersection position under the condition of the longitudinal abnormality of the vibration margin. It can be understood that, under the condition of the longitudinal abnormality of the vibration margin, the steel bars are not tightly fitted. The failure of the steel bars to be tightly fitted will lead to insufficient formation of the welding molten pool and uneven filling of the weld metal, which will reduce the strength and density of the weld joint and make it difficult to withstand the expected load and stress. By correcting the welding time, the welding time can be appropriately extended according to the degree of fitting, so that the welding heat can fully act on the contact gap, promoting better flow and filling of the weld metal, enhancing the fusion effect, improving the integrity and mechanical properties of the weld joint, and ensuring the stability and reliability of the entire steel structure. Furthermore, the adaptive adjustment of the welding correction method is realized, and the production efficiency and welding reliability of the prestressed positioning mesh are improved.

[0095] Specifically, the welding correction module adjusts the spacing distance of the clamps at both ends of the transverse steel bar based on the characterization sub-parameter corresponding to the cross position;

[0096] Among them, the adjustment amount of the interval distance is positively correlated with the characterization sub-parameter.

[0097] Specifically, the larger the characterization sub-parameter, the greater the difference between the maximum value of the vibration signal intensity corresponding to the peak in the vibration intensity change curve and the average value of the vibration signal intensities corresponding to several peaks, the greater the lateral offset of the steel bars during bonding, and the greater the amount of adjustment required for the offset steel bars. In turn, the welding correction method is adaptively adjusted, the offset steel bars are adjusted, and the production efficiency and welding reliability of the prestressed positioning mesh are improved.

[0098] Specifically, the welding unit adjusts the correction amount for the welding time length at the intersection position based on the average value of the vibration signal strengths corresponding to several peaks in the vibration intensity variation curve corresponding to the intersection position, and the correction amount is positively correlated with the average value.

[0099] Specifically, the larger the average value of the vibration signal intensities corresponding to several peaks in the vibration intensity change curve, the greater the longitudinal offset of the steel bars during bonding, the worse the tightness of the bonding between the transverse and longitudinal steel bars, and the greater the correction required for the welding time at the cross position. Thus, an adaptive adjustment method of welding correction is realized, the offset steel bars are adjusted, and the production efficiency and welding reliability of the prestressed positioning mesh are improved.

[0100] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0101] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-stage adjustment mechanism for a prestressed positioning mesh, characterized in that: include: A welding control module, comprising a platform for pulling the longitudinal steel bars to move, a laying unit for laying the transverse steel bars on the longitudinal steel bars, and a welding unit for welding the intersection of the longitudinal steel bars and the transverse steel bars; A plurality of groups of clamps for fixing the transverse steel bars are arranged on both sides of the carrier; An information capture module, which is connected to the welding control module and is used to capture the vibration intensity of the cross position during the steel bar bonding cycle to draw a vibration intensity change curve; a displacement analysis module, which is connected to the information capture module and includes an abnormality analysis unit and an abnormality classification unit, wherein the abnormality analysis unit is used to determine whether there is a vibration margin abnormality at the intersection position according to the signal intensity change of the vibration intensity change curve; The abnormality classification unit is used to determine the vibration margin abnormality category of the intersection position according to the characterizing sub-parameter of the vibration intensity variation curve; Wherein, the characterization sub-parameters include several peak signal intensities of the vibration intensity variation curve; A welding correction module, which is connected to the displacement analysis module and the welding control module respectively, is used to select a welding correction method according to the abnormal vibration margin category, including: Determine the transverse reinforcement corresponding to the intersection position, and adjust the spacing distance of the clamps at both ends of the transverse reinforcement; Or, the welding time of the welding unit at the intersection position is corrected.

2. The multi-stage adjustment mechanism for prestressed positioning mesh according to claim 1, characterized in that: The information capture module is used to draw a vibration intensity change curve, wherein: The vibration intensity variation curve establishes a rectangular coordinate system with the time variation of the steel bar laminating period as the horizontal axis and the vibration signal intensity in the steel bar laminating period as the vertical axis.

3. The multi-stage adjustment mechanism for the prestressed positioning mesh according to claim 2 is characterized in that: The abnormality analysis unit is also used to obtain the margin coefficient of the cross position, wherein: Obtain a vibration intensity variation curve corresponding to the cross position; The duration of the vibration signal intensity greater than the preset vibration amplitude reference value on the horizontal axis of the rectangular coordinate system is determined as the margin coefficient of the intersection position.

4. The multi-stage adjustment mechanism for the prestressed positioning mesh according to claim 3 is characterized in that: The abnormality analysis unit determines whether there is an abnormal vibration margin phenomenon at the intersection position, wherein: If the margin coefficient at the intersection meets the normal condition of steel bar bonding, the abnormality analysis unit determines that there is no abnormal vibration margin phenomenon at the intersection; If the margin coefficient at the intersection does not meet the normal condition for steel bar bonding, the abnormality analysis unit determines that there is an abnormal vibration margin phenomenon at the intersection; Among them, the normal condition for the steel bar fitting is that the margin coefficient at the intersection position does not exceed a preset margin threshold.

5. The multi-stage adjustment mechanism for prestressed positioning mesh according to claim 1, characterized in that: The abnormal classification unit is also used to obtain the characterization sub-parameter, wherein: Obtain a vibration intensity variation curve corresponding to a cross position where an abnormal vibration margin phenomenon exists; The difference between the maximum value of the vibration signal intensity corresponding to the peak in the vibration intensity variation curve and the average value of the vibration signal intensity corresponding to several peaks is determined as the characterizing sub-parameter of the intersection position.

6. The multi-stage adjustment mechanism for prestressed positioning mesh according to claim 5, characterized in that: The abnormality classification unit determines the vibration margin abnormality category of the intersection position, wherein: If the characterizing sub-parameter of the cross position where the vibration margin abnormality exists does not meet the vibration margin weak dominant condition, the abnormality classification unit determines the vibration margin abnormality category of the cross position as the vibration margin lateral abnormality category; If the characterizing sub-parameter of the cross position where the vibration margin abnormality exists meets the vibration margin weak dominant condition, the abnormality classification unit determines the vibration margin abnormality category of the cross position as the vibration margin longitudinal abnormality category.

7. The multi-stage adjustment mechanism for prestressed positioning mesh according to claim 6, characterized in that: The weakly dominant condition of the vibration margin is that the characterization sub-parameter corresponding to the cross position does not exceed a preset characterization sub-parameter threshold.

8. The multi-stage adjustment mechanism for prestressed positioning mesh according to claim 7, characterized in that: The welding correction module selects the welding correction method, among which, If the vibration margin abnormality category is the vibration margin transverse abnormality category, the welding correction method selected by the welding correction module is to determine the transverse steel bar corresponding to the cross position and adjust the spacing distance of the clamps at both ends of the transverse steel bar; If the vibration margin abnormality category is the vibration margin longitudinal abnormality category, the welding correction method selected by the welding correction module is to correct the welding time of the welding unit at the intersection position.

9. The multi-stage adjustment mechanism for prestressed positioning mesh according to claim 8, characterized in that: The welding correction module adjusts the spacing distance of the clamps at both ends of the transverse steel bar based on the characterization sub-parameter corresponding to the cross position; Among them, the adjustment amount of the interval distance is positively correlated with the characterization sub-parameter.

10. The multi-stage adjustment mechanism for prestressed positioning mesh according to claim 8, characterized in that: The welding unit adjusts a correction amount for the welding time length at the intersection position based on an average value of vibration signal intensities corresponding to a plurality of peaks in a vibration intensity variation curve corresponding to the intersection position, and the correction amount is positively correlated with the average value.

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