A hot-dip galvanized iron tower component acid liquid drop control method and a material hoisting rack

Abstract

This invention relates to the field of hot-dip galvanizing treatment of transmission tower components, and discloses a method for controlling acid dripping from hot-dip galvanized tower components and a lifting platform. The method involves installing tower components onto a cross-section flipping frame using directional hanging components, ensuring that the designated drain ends of each tower component face the same side. After pickling, the opening orientation of the concave portion of the component cross-section is adjusted using the cross-section flipping frame, and a longitudinal drop is created by a first suspension component and a second suspension component, making the designated drain end lower than the other end. The acid dripping volume in different areas is obtained using the drain end receiving unit and the non-drain end receiving unit, respectively. The cross-section flipping direction is adjusted based on the change in dripping volume before and after rotation, and the transfer conditions are determined by combining the dripping volume threshold and verifying the rotation. Once the transfer conditions are met, the non-drain end receiving unit is closed, while the drain end receiving unit is retained to receive delayed dripping. This application enables residual acid in the tower components to be concentrated and discharged to the designated drain end, reducing dispersed dripping during the transfer process.

Description

Technical Field

[0001] This invention relates to the field of hot-dip galvanizing treatment of power transmission tower components, specifically to a method for controlling acid dripping from hot-dip galvanized tower components and a material hoisting platform. Background Technology

[0002] Transmission tower components typically include angle steel, bent components, and composite components welded with reinforcing plates or lap plates. To remove oxide scale, rust, and other deposits from the component surface, pickling, rinsing, fluxing, and hot-dip galvanizing are generally required sequentially before hot-dip galvanizing. After pickling, the components are lifted from the pickling tank by hoisting equipment and transferred to subsequent processing stations. During this process, it is necessary to minimize the amount of acid carried by the components.

[0003] In current production processes, residual acid is typically handled using methods such as natural suspension, fixed tilting, vibratory lifting devices, or receiving troughs placed below the transfer path. However, the angle steel of the tower forms an inner angle region extending along its length between the two flanges, and bent and welded components also have bend recesses, lap gaps, and areas where acid may stagnate around holes. When a component is tilted only along its length, the upward-facing recessed section may still store acid; when the component is simply flipped over, the released acid may drip outwards along the length of the component, making it difficult to concentrate at one end. Ordinary lifting chains or hooks also allow the component to rotate around the lifting point, making it difficult to maintain the pre-set drainage direction stably.

[0004] Furthermore, existing drainage methods often rely on fixed hovering times or operator experience to determine whether transfer is possible. They typically only focus on whether the component continues to drip, failing to distinguish whether the acid originates from the middle of the component, a non-drainage end, or a designated drainage end. When acid is temporarily retained in concave sections or overlapping gaps, the component may release acid again during subsequent lifting, acceleration, or turning, causing acid to drip along the crane path and carry residual acid into the rinsing tank, increasing the load on subsequent processing. Therefore, establishing a stable and predictable drainage process for stagnant acid in the cross-sections and along the length of tower components is a problem that needs to be solved in current hot-dip galvanizing production. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a method for controlling acid dripping from hot-dip galvanized iron tower components and a material hoisting platform, thereby solving the technical problems existing in the prior art.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: A method for controlling acid dripping from hot-dip galvanized iron tower components includes the following steps: S1: The end of a component connected to the cross-sectional recess extending along the length direction on the iron tower component is defined as the designated drain end. Two or more iron tower components are respectively installed on the cross-section flipping frame through at least two directional hanging assemblies spaced apart along the length direction of the iron tower component. The iron tower components are restricted from rotating relative to the cross-section flipping frame around their own length direction, and the designated drain ends of each iron tower component face the same side of the cross-section flipping frame. S2: After pickling is completed, the cross-section flipping frame is lifted above the liquid surface of the pickling tank, so that the liquid receiving unit at the drain end and two or more liquid receiving units at the non-drain end arranged along the length of the tower component are moved to the detection position below the tower component. S3: Drive the cross-section flipping frame to rotate around the rotation axis parallel to the length direction of the iron tower component, so that the opening of the cross-section concave part faces downward, and adjust the suspension height of both ends of the cross-section flipping frame so that the designated drainage end is lower than the other end of the iron tower component; S4: Obtain the amount of acid dripping from the drain end collected by the drain end receiving unit and the amount of acid dripping from the non-drain end collected by each non-drain end receiving unit. S5: When the sum of the acid dripping amounts at each non-drainage end is greater than the first dripping amount threshold, maintain the suspension height difference between the designated drainage end and the other end of the tower component, control the cross-section flipping frame to rotate step by step in the first rotation direction, and compare the acid dripping amounts at the drainage end and the sum of the acid dripping amounts at each non-drainage end before and after the rotation. When the sum of acid dripping amounts at each non-drainage end decreases and the acid dripping amount at the drainage end increases, the cross-section flipping frame is adjusted along the first rotation direction; otherwise, the cross-section flipping frame is returned to the angle before rotation, and the cross-section flipping frame is adjusted along the second rotation direction opposite to the first rotation direction in the same comparison method. S6: When the sum of the acid dripping amounts at each non-drainage end is not greater than the first dripping amount threshold and the acid dripping amount at the drainage end is not greater than the second dripping amount threshold, the cross-section flipping frame is rotated to both sides of the current rotation angle for verification. If the sum of acid drips from each non-drainage end does not exceed the first drip threshold during the verification rotation process, the non-drainage end liquid-receiving unit is moved to the retracted position, the drainage end liquid-receiving unit is kept below the designated drainage end and its drainage port is closed, and the tower component is transferred to the subsequent processing station.

[0007] Preferably, the vertical projection of the tower component at the detection position is divided along the length of the tower component into a drainage end detection area and two or more non-drainage end detection areas. The drainage end detection area covers the designated drainage end of each tower component, and the two or more non-drainage end detection areas are arranged sequentially from the designated drainage end to the other end of the tower component and do not overlap with each other. The liquid receiving unit at the drain end receives the acid dripping from the detection area at the drain end, and each liquid receiving unit at the non-drain end receives the acid dripping from the corresponding non-drain end detection area.

[0008] Preferably, each liquid receiving unit is equipped with an independent metering chamber. The process of obtaining the acid dripping volume at the drain end and the acid dripping volume at each non-drain end includes: The continuous inspection period begins after the cross-section flipping frame stops rotating and the suspension height at both ends remains constant. The initial mass of each independent metering chamber at the beginning of the continuous detection period and the final mass at the end of the continuous detection period are obtained respectively. The difference between the final mass and the initial mass of the liquid receiving unit at the drain end is determined as the acid droplet volume at the drain end. The difference between the final mass and the initial mass of each liquid receiving unit at the non-drain end is determined as the acid droplet volume at each non-drain end. The duration of each continuous detection period is the same.

[0009] Preferably, after the cross-section flipping frame rotates stepwise along the first rotation direction or the second rotation direction, it continuously acquires the acid dripping amount at the drain end and the acid dripping amount at each non-drain end during two consecutive detection periods. If, in two consecutive detection periods, the sum of acid droplets from each non-drainage end decreases while the acid droplets from the drainage end increase, the angle after rotation will be determined as the current rotation angle. If the aforementioned state does not occur after stepping along the first and second rotation directions, the suspension height difference between the designated drain end and the other end of the tower component is increased by a fixed height increment, and the stepping rotation along the first and second rotation directions is executed again. If the height difference of the suspension does not exceed the upper limit of the height difference defined by the suspension stroke of both ends of the cross-section flipping frame, and the state is not reached after the upper limit of the height difference is reached, the rotation angle with the smallest sum of acid droplets at each non-drainage end during the two-way step rotation is determined as the current rotation angle.

[0010] Preferably, the verification angle of the verification rotation is smaller than the step angle of the step rotation. When the cross-section flipping frame performs verification rotation to both sides of the current rotation angle, it maintains a continuous detection period at the verification angle position on both sides and then returns to the current rotation angle. If the sum of the acid droplets from each non-drainage end during the continuous detection period corresponding to any verification angle position is greater than the first droplet threshold, the step rotation is executed again. During the transfer of tower components, the liquid receiving unit at the drain end is kept below the designated drain end and the drain port is kept closed. After the cross-section flipping frame returns to the original pickling tank, the liquid receiving unit at the drain end is moved to the detection position. After the liquid receiving unit at the drain end is connected to the original pickling tank, the drain port is opened to discharge the acid collected by the liquid receiving unit at the drain end into the original pickling tank.

[0011] A lifting platform for controlling acid dripping from hot-dip galvanized iron tower components includes a lifting beam, an outer support frame, a cross-section flipping frame, a flipping drive assembly, a directional hanging assembly, a zoned liquid-receiving assembly, a state switching assembly, and a controller. The two ends of the outer support frame are connected to the lifting beam through a first suspension assembly and a second suspension assembly, respectively. At least one of the first suspension assembly and the second suspension assembly changes the suspension distance between the corresponding end of the outer support frame and the lifting beam. The cross-section flipping frame is installed inside the outer support frame and is connected to the outer support frame through rotating supports located at both ends. The rotation axis of the cross-section flipping frame relative to the outer support frame is parallel to the length direction of the tower component. The flipping drive assembly is connected to the cross-section flipping frame for transmission. Two or more directional hanging assemblies are spaced apart along the length of the cross-section flipping frame. The designated drain end is the end connected to the concave part of the cross-section of the iron tower component. Each iron tower component is connected to at least two directional hanging assemblies. The directional hanging assemblies restrict the iron tower component from rotating relative to the cross-section flipping frame about its own length and make the designated drain ends of two or more iron tower components face the same side. The partitioned liquid-collecting assembly includes a liquid-collecting unit at the drain end arranged along the length of the cross-section flipping frame and two or more liquid-collecting units at the non-drain end. Each liquid-collecting unit is equipped with a drip detection unit, and the liquid-collecting unit at the drain end is equipped with a drain port and a sealing component. The state switching component is connected to each liquid-collecting unit and drives each liquid-collecting unit to move between the retracted position and the detection position under the tower component; The controller is connected to the first suspension assembly, the second suspension assembly, the flip drive assembly, the drip detection unit, the state switching assembly, and the enclosure respectively. The controller forms a specified suspension height difference between the discharge end and the other end of the tower component based on the suspension distance between the first suspension assembly and the second suspension assembly. When the sum of the acid dripping amounts detected by each non-drainage end liquid-receiving unit is greater than the first dripping amount threshold, the flipping drive component is controlled to drive the cross-section flipping frame to rotate step by step, and the rotation direction is determined according to the acid dripping amount at the drainage end and the sum of the acid dripping amounts at each non-drainage end before and after the rotation. When the sum of acid dripping amounts from each non-drainage end is not greater than the first dripping amount threshold and the acid dripping amount from the drainage end is not greater than the second dripping amount threshold, the control section flipping frame performs a recheck rotation to both sides of the current rotation angle. During the recheck rotation, if the sum of acid dripping amounts from each non-drainage end does not exceed the first dripping amount threshold again, the non-drainage end liquid receiving unit is moved to the retracted position and the drainage port of the drainage end liquid receiving unit is closed.

[0012] Preferably, the cross-section flipping frame is provided with a linear guide rail extending along its length direction, and each directional hanging assembly includes a hanging seat slidably connected to the linear guide rail, a bearing pin passing through the connection hole of the tower component, a first rotation limiting part abutting against the first side of the tower component, a second rotation limiting part abutting against the second side of the tower component, and a locking member that restricts the bearing pin from exiting the connection hole. The first and second rotation limiting parts are located on the positioning block that is detachably connected to the hanging seat. The hanging seat is fixed to the linear guide rail by fasteners. The position of each hanging seat on the linear guide rail ensures that the designated drain end of two or more tower components is within the liquid receiving range of the drain end liquid receiving unit.

[0013] Preferably, both the first suspension assembly and the second suspension assembly include a lifting chain, a drum wound around the lifting chain, a suspension drive for driving the drum to rotate, a rotation position detection component for detecting the rotation position of the drum, and an electromagnetic brake for locking the drum. The controller determines the suspension distance at both ends of the outer support frame based on the rotation position of the drum detected by the two rotation position detectors, and controls the two electromagnetic brakes to lock the corresponding drum after the corresponding suspension distance is reached at both ends of the outer support frame.

[0014] Preferably, each liquid receiving unit includes a liquid receiving tank, a buffer guide plate disposed in the liquid receiving tank, an independent metering chamber connected to the bottom of the liquid receiving tank through a flexible guide pipe, and a weighing detection element disposed below the independent metering chamber, wherein the drip detection unit is composed of the weighing detection element; The state switching component includes telescopic actuators that are connected to each liquid receiving unit. One end of each telescopic actuator is connected to the outer support frame, and the other end is connected to the corresponding liquid receiving unit. The controller controls each telescopic actuator to extend or retract, so that the liquid receiving unit at the drain end and each liquid receiving unit at the non-drain end can move independently between the retracted position and the detection position.

[0015] 10. A material lifting platform for controlling acid dripping of hot-dip galvanized iron tower components according to claim 9, characterized in that the drain port of the liquid receiving unit at the drain end is connected to an acid-resistant reflux hose, the other end of the acid-resistant reflux hose is provided with a reflux interface connected to the original pickling tank, and the sealing element is a normally closed valve set between the drain port and the acid-resistant reflux hose. The external support frame is equipped with a position detection device to detect whether the lifting platform is located above the original pickling tank, and the return interface is equipped with an interface connection detection device to detect the connection status between the return interface and the original pickling tank. The controller opens the normally closed valve when the position detection device detects that the lifting platform is above the original pickling tank, the liquid receiving unit at the discharge end is in the detection position, and the interface connection detection device detects that the return interface is connected to the original pickling tank. If any of these conditions are not met, the normally closed valve remains closed.

[0016] In summary, the present invention has the following main beneficial effects: By restricting the free rotation of the tower component relative to the cross-section flipping frame around its own length direction through the directional hanging assembly, and changing the opening orientation of the cross-section concave part through the cross-section flipping frame, the first suspension assembly and the second suspension assembly are used to form a longitudinal drop at which the designated drainage end is lower than the other end. This causes the acid liquid that is stuck in the inner corner of the angle steel, the bending concave part or the lap gap to first leave the cross-section retention position, and then migrate along the length direction of the tower component to the designated drainage end. This achieves the effect of combining cross-section drainage with longitudinal flow and reducing the dispersion of dripping liquid in the middle and non-drainage ends of the tower component.

[0017] By setting up a liquid-receiving unit at the drain end and two or more liquid-receiving units at the non-drain end along the length of the tower component, the acid dripping volume in the designated drain end area and the non-drain end area are obtained respectively. The cross-section flipping direction is adjusted according to the changes in the acid dripping volume at the non-drain end and the acid dripping volume at the drain end before and after the cross-section flipping frame is rotated. This makes the determination of the cross-section posture no longer dependent on a fixed angle or manual experience, so as to adapt to different specifications of tower components, different loading deviations and different cross-section liquid stagnation states, and make the acid gradually change from scattered dripping to concentrated flow towards the designated drain end.

[0018] The first drip threshold, the second drip threshold, and the verification rotation are used to jointly determine whether the tower components have reached the transfer conditions. After the transfer conditions are reached, the non-drainage end liquid-receiving unit is gathered, and the drainage end liquid-receiving unit is retained to receive the delayed drips. At the same time, the collected acid is returned to the original pickling tank, which achieves the effect of reducing acid dripping along the transfer path, reducing acid being brought into subsequent processing stations, and centrally recovering the acid. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention; Figure 2 This is a diagram of the external support frame of the present invention; Figure 3 This is a cross-sectional view of the flipping frame of the present invention; Figure 4 This is a diagram of the partitioned liquid-receiving component of the present invention.

[0020] Reference numerals: 1. Lifting beam; 2. Suspension assembly; 3. External bearing frame; 4. Section tilting frame; 5. Tilting drive assembly; 6. Worm gear; 7. Linear guide rail; 8. Directional suspension assembly; 9. Zoned liquid receiving assembly; 10. Weighing detection component; 11. Independent metering chamber; 12. Interface connection detection component; 13. Flexible guide pipe; 14. Telescopic actuator; 15. Rotating bearing. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1 refer to Figure 1 A method for controlling acid dripping from hot-dip galvanized iron tower components and a lifting platform, the lifting platform including a lifting beam, an outer bearing frame, a first suspension component, a second suspension component, a cross-section flipping frame, a flipping drive component, a directional hanging component, a zoned liquid-receiving component, a state switching component, and a controller.

[0023] The lifting beam extends along the length of the tower components and is connected to the main hook of the workshop crane. The first and second suspension assemblies are respectively located at both ends of the lifting beam, and the two ends of the outer support frame are suspended below the first and second suspension assemblies respectively.

[0024] Both the first and second suspension assemblies include a lifting chain, a drum, a suspension drive, a rotational position detection device, and an electromagnetic brake. One end of the lifting chain is connected to the outer support frame, and the other end is wound around the drum. The suspension drive uses a motor with a reduction gear and is connected to the drum drive. The rotational position detection device is coaxially connected to the drum and is used to detect the rotational position of the drum. The electromagnetic brake is located on the drum shaft or at the output end of the suspension drive.

[0025] The first and second suspension assemblies can respectively change the suspension distance between the corresponding ends of the outer support frame and the lifting beam. When the suspension distances of the first and second suspension assemblies are the same, the outer support frame remains horizontal; when the suspension distance on one side of the designated drain end increases, or the suspension distance on the other side of the tower component decreases, the outer support frame forms a longitudinal tilt state where the designated drain end is lower than the other end of the tower component.

[0026] A single-layer spiral winding groove is provided on the outer circumference of the drum. The lifting chain is wound in a single layer along the spiral winding groove, so that the effective winding radius of the drum remains basically unchanged when the lifting chain is released or retracted. The controller determines the release length of the lifting chain based on the rotation position of the drum detected by the rotation position detection device, and then determines the suspension distance of the corresponding end of the outer support frame.

[0027] When using a multi-layer winding drum, a calibrated correspondence between the drum's rotation position and the lifting chain's release length is established through actual measurements after equipment installation, and this correspondence is stored in the controller. The controller then queries the corresponding lifting chain release length based on the drum's rotation position detected by the rotation position detector, avoiding errors in suspension distance calculation due to changes in the number of winding layers.

[0028] The outer support frame is a frame structure extending along the length of the tower component, and the interior of the outer support frame forms the installation area for the cross-section flipping frame. The two ends of the cross-section flipping frame are connected to the outer support frame through swivel bearings, and the central axes of the two swivel bearings coincide and are parallel to the length direction of the tower component.

[0029] The tilting drive assembly is located at one end of the outer support frame. The tilting drive assembly includes a tilting drive component, a reduction gear transmission mechanism, an angle detection component, and a braking component. The tilting drive component drives the cross-section tilting frame to rotate relative to the outer support frame via the reduction gear transmission mechanism, and the angle detection component detects the actual rotation angle of the cross-section tilting frame relative to the outer support frame.

[0030] The reduction transmission mechanism adopts a worm gear mechanism. The worm gear mechanism is used to limit the rotation of the cross-section flipping frame due to the shift of the center of gravity of the tower components. After the cross-section flipping frame reaches the detection angle, the braking component locks the cross-section flipping frame, so that the cross-section flipping frame maintains a constant angle during the drop detection.

[0031] The cross-section flipping frame is equipped with linear guide rails extending along its length. Two or more directional hanging assemblies are spaced apart along the linear guide rails, and each directional hanging assembly includes a hanging base, a bearing pin, a first rotation limiter, a second rotation limiter, a locking element, and fasteners.

[0032] The hanging bracket is slidably connected to the linear guide rail. After the hanging bracket moves to the position corresponding to the connection hole of the tower component, it is fixed to the linear guide rail with fasteners.

[0033] The support pin passes through the connection hole of the tower component itself, and a locking device is installed at the end of the support pin that protrudes from the connection hole. The locking device prevents the support pin from exiting the connection hole.

[0034] The first and second rotation limiting parts are mounted on a positioning block that is detachably connected to the hanging seat. For angle steel components, the first rotation limiting part abuts against the first flange of the angle steel, and the second rotation limiting part abuts against the second flange of the angle steel.

[0035] The bearing pin and the hole wall of the connecting hole form a vertical bearing fit, and the weight of the tower component is mainly borne by the bearing pin. The first and second rotation limiting parts form a circumferential rotation limiting fit with the side of the tower component, which is used to transmit the torque generated by the cross-section flipping frame to the tower component.

[0036] An assembly gap is allowed between the first and second rotation limiting parts and the tower components. This assembly gap is smaller than the circumferential displacement of the tower components relative to the hanging base when the cross-section flipping frame rotates by one step angle, allowing the tower components to change the cross-section orientation with the cross-section flipping frame, rather than rotating on the bearing pin to a free posture with the center of gravity facing downwards.

[0037] Each tower component is connected to the cross-section flipping frame by at least two directional suspension assemblies spaced apart along its length. The two directional suspension assemblies together restrict the rotation of the tower component about its own length and share the weight of the tower component as well as the deflection load generated during the flipping process.

[0038] For tower components with bent edges, reinforcing plates, or overlapping plates, replace the positioning blocks with those corresponding to the shape of the tower component, so that the first and second rotation limiting parts respectively abut against the main body of the tower component and the bent edge, reinforcing plate, or overlapping plate. The bearing pin still passes through the connection hole inherent in the tower component itself.

[0039] The installation position of the hanger on the linear guide rail is determined according to the length of the tower component and the position of the connection hole, so that the designated drain ends of the tower components of the same batch are all within the liquid receiving range of the drain end receiving unit. Each designated drain end is not required to be completely flush, but all must be located within the drain end detection area.

[0040] The partitioned liquid-collecting assembly includes one liquid-collecting unit at the drain end and two or more liquid-collecting units at the non-drain end. The liquid-collecting unit at the drain end is located below the designated drain end, and the two or more liquid-collecting units at the non-drain end are arranged sequentially from the designated drain end toward the other end of the tower component.

[0041] The vertical projection of the tower component in the detection position is divided along the length of the tower component into one drainage end detection area and two or more non-drainage end detection areas. The drainage end detection area covers the designated drainage end of the same batch of tower components, and each non-drainage end detection area covers a different length region between the designated drainage end and the other end of the tower component.

[0042] The boundary between adjacent detection zones is determined by the dividing position of the liquid inlet of the adjacent liquid-receiving unit in the vertical projection direction of the tower component. A partition or gap is installed between adjacent liquid-receiving units to prevent acid dripping from one detection zone from entering the adjacent liquid-receiving unit.

[0043] Each liquid receiving unit includes a liquid receiving tank, a buffer guide plate, a flexible guide tube, an independent metering chamber, and a drip detection unit.

[0044] The upper part of the receiving tank is open, and a buffer guide plate is inclinedly installed inside the receiving tank. After the acid drips onto the buffer guide plate, it flows along the buffer guide plate to the outlet of the receiving tank, reducing splashing caused by the droplets directly hitting the bottom of the receiving tank.

[0045] The receiving tank is connected to the independent metering chamber via a flexible guide tube. The flexible guide tube forms a relaxed, curved section between the receiving tank and the independent metering chamber, and is supported by a pipe clamp mounted on the outer support frame. A free section is maintained between the pipe clamp and the independent metering chamber, ensuring that the flexible guide tube does not bear the weight of the independent metering chamber, thus reducing the influence of the flexible guide tube on the balancing results.

[0046] In this embodiment, the drip detection unit is a weighing detection element located below the independent metering chamber. The weighing detection element detects the mass change of the acid solution collected in the independent metering chamber.

[0047] In other embodiments, the drip detection unit can employ either a level sensor or a flow sensor. When a level sensor is used, the controller determines the acid volume based on the cross-sectional area of ​​the independent metering chamber and the change in liquid level; when a flow sensor is used, the controller accumulates the volume of acid flowing through the outlet of the corresponding receiving unit during a continuous detection period.

[0048] The state switching component includes telescopic actuators that correspond one-to-one with each liquid-receiving unit. One end of the telescopic actuator is connected to the outer support frame, and the other end is connected to the corresponding liquid-receiving unit.

[0049] Each liquid-collecting unit has a retractable position and a detection position. In the retractable position, the liquid-collecting unit is located outside the vertical projection range of the tower component; in the detection position, the liquid-collecting unit is located below the corresponding detection area.

[0050] Each telescopic actuator can operate independently, allowing the liquid-collecting unit at the drain end and each liquid-collecting unit at the non-drain end to move between the retracted position and the detection position, respectively. During the movement of the liquid-collecting unit, the independent metering chamber is kept upright by a retaining mechanism to prevent the collected acid from flowing out.

[0051] Both the drain-end and non-drain-end liquid-collecting units are equipped with drain ports and normally closed drain valves. The drain port of the drain-end liquid-collecting unit is connected to an acid-resistant reflux hose, and the other end of the acid-resistant reflux hose is equipped with a reflux interface. The drain ports of each non-drain-end liquid-collecting unit are connected to the acid-resistant reflux hose through branch hoses, or are equipped with separate reflux interfaces.

[0052] The external support frame is equipped with a position detection device, and the return interface is equipped with an interface connection detection device. The controller only opens the normally closed discharge valve when the lifting platform is above the original pickling tank, the liquid receiving unit is in the detection position, and the return interface is connected to the original pickling tank.

[0053] This implementation method uses two or more angle steel components as an example.

[0054] Before loading, the inner corner region formed between the two flanges of the angle steel is defined as the concave section, and the end of a component connected to the concave section is defined as the designated drain end.

[0055] Adjust the position of each hanger on the linear guide rail, arrange the designated drain ends of each angle steel component on the same side of the cross-section flipping frame, and ensure that each designated drain end is located within the drain end detection area.

[0056] A support pin is passed through the connection hole of the angle steel member, and a locking device is installed at the end of the support pin that protrudes from the connection hole, so that the first and second rotation limiting parts abut against the two flanges of the angle steel respectively. Each angle steel member is supported by at least two directional suspension assemblies.

[0057] During the pickling process, both the drain end liquid-receiving unit and the non-drain end liquid-receiving units are in the retracted position, and the external support frame remains horizontal. The tower components enter the pickling tank along with the hoisting platform and complete the pickling process.

[0058] After pickling is completed, the overhead crane vertically lifts the lifting platform using the lifting beam. Once the tower components are completely removed from the pickling tank surface, the controller uses a state switching component to move the liquid receiving units at the drain end and each liquid receiving unit at the non-drain end to the detection position.

[0059] After each liquid-collecting unit enters the detection position, the controller drives the cross-section flipping frame to rotate around the rotation axis parallel to the length direction of the iron tower component, so that the opening of the inner corner area of ​​the angle steel faces downward and the concave part of the cross-section no longer forms an upward-facing liquid storage area.

[0060] This is the initial drainage posture. The initial drainage posture is determined based on the cross-sectional shape of the tower components and the installation direction of the directional suspension assembly, and does not use a uniform fixed angle that is detached from the actual structure of the components.

[0061] The controller then adjusts the first suspension assembly and the second suspension assembly respectively, so that the designated drain end is lower than the other end of the tower component, thereby creating a longitudinal tilt drop along the length of the tower component.

[0062] Cross-section flipping is used to remove the acid in the concave section from its original position, and longitudinal tilting is used to allow the released acid to migrate along the tower components to the designated discharge end.

[0063] After the first and second suspension components reach the corresponding suspension distances, the electromagnetic brakes lock the corresponding drums respectively; after the cross-section flipping frame reaches the detection angle, the braking components lock the cross-section flipping frame.

[0064] After the attitude adjustment is completed, the controller continuously reads the detection values ​​of each drop detection unit.

[0065] When the difference between the maximum and minimum detection values ​​of each drip detection unit within a stable judgment period is not greater than the upper limit of fluctuation obtained by the corresponding drip detection unit through no-load calibration, the controller determines that the material hoisting platform has entered a stable detection state.

[0066] Once the detection stabilizes, the controller begins continuous detection periods. Each continuous detection period has the same duration.

[0067] No. The liquid-receiving unit in the first The amount of acid droplets collected during each consecutive detection period is: ; in: Indicates the i-th liquid-bearing unit in the i-th... The amount of acid droplets collected during a continuous detection period; Indicates the i-th liquid-bearing unit in the i-th... The quality test value at the beginning of each continuous testing period; Indicates the first The liquid-receiving unit in the first Quality test value at the end of a continuous testing period; Indicates the first The start time of a continuous detection period; Indicates the duration of a continuous detection period.

[0068] The amount of acid droplets collected by the drain end receiving unit within a continuous detection period is defined as the drain end acid droplet amount. The sum of the acid droplet amounts collected by two or more non-drain end receiving units within the same continuous detection period is defined as the non-drain end acid droplet amount.

[0069] The duration of the continuous detection period is determined through equipment calibration. This duration is not shorter than the time required for the droplet detection unit to complete one stable filtering output, and ensures that the detection increment generated by a stably identifiable acid droplet is greater than the no-load fluctuation of the droplet detection unit.

[0070] During the same acid droplet control process, the same duration is used for each consecutive detection period.

[0071] The first and second drop thresholds were determined by calibrating the samples through no-load noise calibration and drainage, without using arbitrary fixed values ​​that are detached from the actual equipment and tower components.

[0072] During the no-load noise calibration, each liquid-receiving unit is in the detection position, and the cross-section flipping frame, the first suspension assembly, and the second suspension assembly are all locked. Each liquid-receiving unit does not receive acid. The changes in the detection values ​​of each drip detection unit are recorded multiple times during the same continuous detection period as the actual discharge detection.

[0073] The maximum sum of mass fluctuations of each non-drainage end liquid-receiving unit within a no-load testing period is determined as the upper limit of no-load fluctuation for the non-drainage end; the maximum mass fluctuation of each drainage end liquid-receiving unit within a no-load testing period is determined as the upper limit of no-load fluctuation for the drainage end.

[0074] After the sample calibration is completed, a representative iron tower component from the company's actual production is selected, and the liquid is drained in accordance with the liquid drainage control process of this application.

[0075] After the tower components have initially reached the state of complete liquid drainage, the high and low ends of the tower components along their length are swapped, and the components are then rotated to verify the rotation on both sides of the current rotation angle of the cross-section flipping frame.

[0076] When the newly collected acid volume from the non-drainage end during the verification process does not exceed the upper limit of the non-drainage end empty load fluctuation, and the newly collected acid volume from the drainage end does not exceed the upper limit of the drainage end empty load fluctuation, the corresponding drainage process is determined as a confirmed completed sample.

[0077] The first droplet volume threshold and the second droplet volume threshold are respectively: ; ; in: Indicates the threshold for the first droplet volume; This indicates the second droplet volume threshold; Indicates the upper limit of the no-load fluctuation at the non-drainage end; Indicates the upper limit of the unloaded fluctuation at the drain end; This indicates the maximum amount of acid dripping from the non-drainage end of the sample in the fully confirmed sample. This indicates the maximum amount of acid dripping from the drain end of the sample after all samples have been confirmed.

[0078] The first drip threshold is used to determine whether there is still scattered dripping in the component area outside the designated drain end. The second drip threshold is used to determine whether the acid that has been collected towards the designated drain end has decayed to a level that allows for transfer.

[0079] When the type of tower components, the quantity loaded in a single batch, the type of pickling solution, the duration of continuous testing, or the drip detection unit changes, the threshold calibration must be performed again. For tower components with the same structural type, loading method, and testing conditions, the corresponding pre-calibrated threshold group can be called.

[0080] To avoid misjudging the rotation direction due to fluctuations in the weighing detection component, the controller does not directly determine whether the dripping amount has increased or decreased based on arbitrary positive or negative differences.

[0081] The non-drainage end comparison tolerance is determined based on the no-load fluctuation and nominal resolution of each non-drainage end drip detection unit; the drainage end comparison tolerance is determined based on the no-load fluctuation and nominal resolution of the drainage end drip detection unit.

[0082] When the difference in acid drop volume at the non-drainage end before and after the stepper rotation is greater than the comparison tolerance at the non-drainage end, it is determined that the acid drop volume at the non-drainage end has decreased.

[0083] When the difference between the amount of acid dripping from the drain end after stepping rotation and the amount of acid dripping from the drain end before stepping rotation is greater than the comparison tolerance of the drain end, it is determined that the amount of acid dripping from the drain end has increased.

[0084] If the difference does not exceed the corresponding comparison tolerance, it is determined that the amount of acid dripping from the non-drainage end has not decreased or the amount of acid dripping from the drainage end has not increased.

[0085] The amount of dripping after each step rotation is compared with the amount of dripping corresponding to the current rotation angle before this step rotation, but not with the amount of dripping corresponding to any historical rotation angle.

[0086] Once a step rotation is determined to be a valid rotation, the angle after the rotation is taken as the new current rotation angle, and the amount of droplets obtained at that angle is used as the comparison benchmark for the next step rotation.

[0087] When the amount of acid dripping from the non-drainage end exceeds the first dripping threshold, it indicates that there is still scattered dripping in the component area outside the designated drainage end, and the current cross-sectional orientation has not yet caused the acid to mainly flow towards the designated drainage end.

[0088] The controller maintains a constant suspension height difference between the designated drain end and the other end of the tower component, and the control section flipping frame rotates one step angle along the first rotation direction.

[0089] After the cross-section flipping frame completes the stepping rotation and re-enters the detection stable state, the controller obtains the amount of acid dripping from the drain end and the amount of acid dripping from the non-drain end after the rotation.

[0090] The controller will only determine the first rotation direction as the effective rotation direction and the angle after rotation as the new current rotation angle if the acid dripping amount at the non-drainage end decreases and the acid dripping amount at the drainage end increases in two consecutive detection periods.

[0091] When the acid dripping amount at the non-drainage end does not decrease, or the acid dripping amount at the drainage end does not increase, the controller causes the cross-section flipping frame to return to the angle before rotation, and then rotates it in the same step angle in the second rotation direction opposite to the first rotation direction, and compares the dripping amount in the same way.

[0092] The step angle is determined based on the minimum rotation angle that the flip drive assembly can stably repeat, the return clearance of the reduction transmission mechanism, the resolution of the rotation angle detection component, and the safety clearance between the tower components and the outer support frame.

[0093] The step angle must be greater than the invalid angle formed by the return clearance of the reduction transmission mechanism and the resolution of the angle detection component, and must not cause interference between the tower components and the external support frame or the partitioned liquid-bearing assembly.

[0094] After rotating along the first and second rotation directions, if neither of these conditions results in a decrease in acid dripping from the non-drainage end and an increase in acid dripping from the drainage end, the controller increases the suspension height difference between the designated drainage end and the other end of the tower component, and then re-executes the step judgment for the two rotation directions.

[0095] The increase in suspension height difference for each step is determined based on the following parameters: The minimum adjustment distance that the suspension drive can reliably and repeatedly perform; The resolution of the suspension distance corresponding to the rotation position detection component; Eliminate the distance required for lifting chain slack.

[0096] The fixed height increment is the maximum value among the three distances mentioned above.

[0097] The upper limit of the suspension height difference is jointly limited by the effective stroke of the first and second suspension components, the safe distance between the tower components and the outer support frame, and the allowable tilt range within which the partitioned liquid-receiving components can maintain the corresponding relationship of the detection areas.

[0098] When the upper limit of the suspension height difference is reached, and neither the first rotation direction nor the second rotation direction still meets the effective rotation conditions, the controller compares the amount of acid dripping from the non-drainage end corresponding to each candidate rotation angle during the trial of the two directions, and determines the candidate rotation angle with the smallest amount of acid dripping from the non-drainage end as the current rotation angle.

[0099] When two or more candidate rotation angles correspond to the same amount of acid dripping at the non-drainage end, the candidate rotation angle with the larger acid dripping amount at the drainage end is selected; when the acid dripping amounts at the drainage end are still the same, the candidate rotation angle with the smaller deviation from the initial drainage angle is selected.

[0100] When the acid dripping amount at the non-drainage end does not exceed the first dripping amount threshold for two consecutive detection periods, and the acid dripping amount at the drainage end does not exceed the second dripping amount threshold for two consecutive detection periods, the controller performs a verification rotation.

[0101] The verification angle is smaller than the step angle and larger than the invalid angle formed by the return backlash of the speed reduction transmission mechanism and the resolution of the angle detection component.

[0102] The controller first rotates the cross-section flipping frame from the current rotation angle to the first rotation direction by a verification angle, maintains it at the first verification angle position for a continuous detection period, and then returns to the current rotation angle.

[0103] Subsequently, the controller rotates the cross-section flipping frame in the second rotation direction by a verification angle, maintains the second verification angle position for a continuous detection period, and then returns to the current rotation angle.

[0104] When the amount of acid dripping from the non-drainage end at any verification angle position exceeds the first dripping threshold again, it indicates that there is still acid temporarily sealed by the original posture in the concave part of the cross section, the edge of the connecting hole, or the overlap gap, and the controller re-executes the feedback adjustment of the cross section angle.

[0105] When the acid dripping amount at the non-drainage end under both verification angle positions does not exceed the first dripping amount threshold again, the tower component is determined to have met the transfer conditions.

[0106] The verification rotation is used to check whether the residual acid in the concave section will be released again due to a small change in attitude, and is not used to further increase the overall tilt of the tower components.

[0107] Once the tower components meet the transfer conditions, the controller moves each non-drainage end liquid-collecting unit from the detection position to the retracted position, while the normally closed discharge valves of each non-drainage end liquid-collecting unit remain closed.

[0108] The liquid receiving unit at the discharge end remains located below the designated discharge end, and the normally closed discharge valve of the liquid receiving unit at the discharge end remains closed to receive delayed drips generated by the designated discharge end during the transfer process.

[0109] After the tower components enter the subsequent processing station, the liquid receiving unit at the drain end moves to the retracted position.

[0110] After the lifting platform returns to the top of the original pickling tank, the position detection device detects the position of the lifting platform, and the interface connection detection device detects the connection status between the return interface and the original pickling tank.

[0111] When the lifting platform is located above the original pickling tank, each liquid receiving unit is in the detection position and the return interface is connected to the original pickling tank, the controller stops the drip measurement of each drip detection unit, opens the normally closed discharge valves of the discharge end liquid receiving unit and each non-discharge end liquid receiving unit, and discharges the collected acid into the original pickling tank.

[0112] After the acid discharge is completed, the controller closes all normally closed discharge valves and performs zero-point calibration on each drip detection unit. After the zero-point calibration is completed, each liquid receiving unit moves to the retracted position, and the loading platform enters the next batch loading state.

[0113] For iron tower components with welded reinforcing plates or lap plates, the open gap extending along the length direction is determined according to the component drawings and the actual object, and this open gap is defined as the concave part of the cross section.

[0114] Replace the positioning block with one that corresponds to the shape of the welded tower component, so that the first limiting part abuts against the main body of the tower component, the second limiting part abuts against the reinforcing plate, lap plate or bent edge, and the bearing pin passes through the connecting hole of the welded tower component.

[0115] When the cross-section flipping frame rotates, the opening direction of the open gap changes accordingly. The controller does not directly determine the final drainage posture based on the theoretical angles in the component drawings, but rather determines the effective rotation direction based on the changes in the amount of acid dripping from the non-drainage end and the drainage end.

[0116] Within the same batch, tower components with opposite effective drainage opening directions should not be installed together on the same cross-section tilting frame. Tower components with different cross-sectional structures but the same drainage opening direction can be loaded together by replacing the positioning blocks and adjusting the position of the hanging seats.

[0117] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hot-dip galvanized iron tower member acid liquid drop control method, characterized by, Includes the following steps: S1: The end of a component connected to the cross-sectional recess extending along the length direction on the iron tower component is defined as the designated drain end. Two or more iron tower components are respectively installed on the cross-section flipping frame through at least two directional hanging assemblies spaced apart along the length direction of the iron tower component. The iron tower components are restricted from rotating relative to the cross-section flipping frame around their own length direction, and the designated drain ends of each iron tower component face the same side of the cross-section flipping frame. S2: After pickling is completed, the cross-section flipping frame is lifted above the liquid surface of the pickling tank, so that the liquid receiving unit at the drain end and two or more liquid receiving units at the non-drain end arranged along the length of the tower component are moved to the detection position below the tower component. S3: Drive the cross-section flipping frame to rotate around the rotation axis parallel to the length direction of the iron tower component, so that the opening of the cross-section concave part faces downward, and adjust the suspension height of both ends of the cross-section flipping frame so that the designated drainage end is lower than the other end of the iron tower component; S4: Obtain the amount of acid dripping from the drain end collected by the drain end receiving unit and the amount of acid dripping from the non-drain end collected by each non-drain end receiving unit. S5: When the sum of the acid dripping amounts at each non-drainage end is greater than the first dripping amount threshold, maintain the suspension height difference between the designated drainage end and the other end of the tower component, control the cross-section flipping frame to rotate step by step in the first rotation direction, and compare the acid dripping amounts at the drainage end and the sum of the acid dripping amounts at each non-drainage end before and after the rotation. When the sum of acid dripping amounts at each non-drainage end decreases and the acid dripping amount at the drainage end increases, the cross-section flipping frame is adjusted along the first rotation direction; otherwise, the cross-section flipping frame is returned to the angle before rotation, and the cross-section flipping frame is adjusted along the second rotation direction opposite to the first rotation direction in the same comparison method. S6: When the sum of the acid dripping amounts at each non-drainage end is not greater than the first dripping amount threshold and the acid dripping amount at the drainage end is not greater than the second dripping amount threshold, the cross-section flipping frame is rotated to both sides of the current rotation angle for verification. If the sum of acid drips from each non-drainage end does not exceed the first drip threshold during the verification rotation process, the non-drainage end liquid-receiving unit is moved to the retracted position, the drainage end liquid-receiving unit is kept below the designated drainage end and its drainage port is closed, and the tower component is transferred to the subsequent processing station.

2. The method according to claim 1, wherein the method is characterized by, The vertical projection of the tower component at the detection position is divided along the length of the tower component into a drainage end detection area and two or more non-drainage end detection areas. The drainage end detection area covers the designated drainage end of each tower component, and the two or more non-drainage end detection areas are arranged sequentially from the designated drainage end to the other end of the tower component and do not overlap with each other. The liquid receiving unit at the drain end receives the acid dripping from the detection area at the drain end, and each liquid receiving unit at the non-drain end receives the acid dripping from the corresponding non-drain end detection area.

3. The method according to claim 2, wherein the method is characterized by, Each liquid receiving unit is equipped with an independent metering chamber. The process of obtaining the acid dripping volume at the drain end and the acid dripping volume at each non-drain end includes: The continuous inspection period begins after the cross-section flipping frame stops rotating and the suspension height at both ends remains constant. The initial mass of each independent metering chamber at the beginning of the continuous detection period and the final mass at the end of the continuous detection period are obtained respectively. The difference between the final mass and the initial mass of the liquid receiving unit at the drain end is determined as the acid droplet volume at the drain end. The difference between the final mass and the initial mass of each liquid receiving unit at the non-drain end is determined as the acid droplet volume at each non-drain end. The duration of each continuous detection period is the same.

4. The method for controlling acid dripping from hot-dip galvanized iron tower components according to claim 3, characterized in that, After the cross-section flipping frame rotates stepwise along the first rotation direction or the second rotation direction, it continuously acquires the acid dripping amount at the drain end and the acid dripping amount at each non-drain end during two consecutive detection periods. If, in two consecutive detection periods, the sum of acid droplets from each non-drainage end decreases while the acid droplets from the drainage end increase, the angle after rotation will be determined as the current rotation angle. If the aforementioned state does not occur after stepping along the first and second rotation directions, the suspension height difference between the designated drain end and the other end of the tower component is increased by a fixed height increment, and the stepping rotation along the first and second rotation directions is executed again. If the height difference of the suspension does not exceed the upper limit of the height difference defined by the suspension stroke of both ends of the cross-section flipping frame, and the state is not reached after the upper limit of the height difference is reached, the rotation angle with the smallest sum of acid droplets at each non-drainage end during the two-way step rotation is determined as the current rotation angle.

5. The method for controlling acid dripping from hot-dip galvanized iron tower components according to claim 4, characterized in that, The verification angle of the verification rotation is smaller than the step angle of the step rotation. When the cross-section flipping frame performs verification rotation to both sides of the current rotation angle, it maintains a continuous detection period at the verification angle position on both sides and then returns to the current rotation angle. If the sum of the acid droplets from each non-drainage end during the continuous detection period corresponding to any verification angle position is greater than the first droplet threshold, the step rotation is executed again. During the transfer of tower components, the liquid receiving unit at the drain end is kept below the designated drain end and the drain port is kept closed. After the cross-section flipping frame returns to the original pickling tank, the liquid receiving unit at the drain end is moved to the detection position. After the liquid receiving unit at the drain end is connected to the original pickling tank, the drain port is opened to discharge the acid collected by the liquid receiving unit at the drain end into the original pickling tank.

6. A lifting platform for controlling acid dripping from hot-dip galvanized iron tower components, applicable to the acid dripping control method for hot-dip galvanized iron tower components as described in any one of claims 1-5, characterized in that... Includes lifting beam, external load-bearing frame, cross-section tilting frame, tilting drive assembly, directional hanging assembly, zoned liquid-bearing assembly, state switching assembly and controller; The two ends of the outer support frame are connected to the lifting beam through a first suspension assembly and a second suspension assembly, respectively. At least one of the first suspension assembly and the second suspension assembly changes the suspension distance between the corresponding end of the outer support frame and the lifting beam. The cross-section flipping frame is installed inside the outer support frame and is connected to the outer support frame through rotating supports located at both ends. The rotation axis of the cross-section flipping frame relative to the outer support frame is parallel to the length direction of the tower component. The flipping drive assembly is connected to the cross-section flipping frame for transmission. Two or more directional hanging assemblies are spaced apart along the length of the cross-section flipping frame. The designated drain end is the end connected to the concave part of the cross-section of the iron tower component. Each iron tower component is connected to at least two directional hanging assemblies. The directional hanging assemblies restrict the iron tower component from rotating relative to the cross-section flipping frame about its own length and make the designated drain ends of two or more iron tower components face the same side. The partitioned liquid-collecting assembly includes a liquid-collecting unit at the drain end arranged along the length of the cross-section flipping frame and two or more liquid-collecting units at the non-drain end. Each liquid-collecting unit is equipped with a drip detection unit, and the liquid-collecting unit at the drain end is equipped with a drain port and a sealing component. The state switching component is connected to each liquid-collecting unit and drives each liquid-collecting unit to move between the retracted position and the detection position under the tower component; The controller is connected to the first suspension assembly, the second suspension assembly, the flip drive assembly, the drip detection unit, the state switching assembly, and the enclosure respectively. The controller forms a specified suspension height difference between the discharge end and the other end of the tower component based on the suspension distance between the first suspension assembly and the second suspension assembly. When the sum of the acid dripping amounts detected by each non-drainage end liquid-receiving unit is greater than the first dripping amount threshold, the flipping drive component is controlled to drive the cross-section flipping frame to rotate step by step, and the rotation direction is determined according to the acid dripping amount at the drainage end and the sum of the acid dripping amounts at each non-drainage end before and after the rotation. When the sum of acid dripping amounts from each non-drainage end is not greater than the first dripping amount threshold and the acid dripping amount from the drainage end is not greater than the second dripping amount threshold, the control section flipping frame performs a recheck rotation to both sides of the current rotation angle. During the recheck rotation, if the sum of acid dripping amounts from each non-drainage end does not exceed the first dripping amount threshold again, the non-drainage end liquid receiving unit is moved to the retracted position and the drainage port of the drainage end liquid receiving unit is closed.

7. A hoisting platform for controlling acid dripping from hot-dip galvanized iron tower components according to claim 6, characterized in that, The cross-section flipping frame is provided with a linear guide rail extending along its length. Each directional hanging assembly includes a hanging seat that is slidably connected to the linear guide rail, a bearing pin that passes through the connection hole of the tower component, a first rotation limiting part that abuts against the first side of the tower component, a second rotation limiting part that abuts against the second side of the tower component, and a locking member that restricts the bearing pin from exiting the connection hole. The first and second rotation limiting parts are located on the positioning block that is detachably connected to the hanging seat. The hanging seat is fixed to the linear guide rail by fasteners. The position of each hanging seat on the linear guide rail ensures that the designated drain end of two or more tower components is within the liquid receiving range of the drain end liquid receiving unit.

8. A lifting platform for controlling acid dripping from hot-dip galvanized iron tower components according to claim 7, characterized in that, Both the first suspension assembly and the second suspension assembly include a lifting chain, a drum for winding the lifting chain, a suspension drive for driving the drum to rotate, a rotation position detection component for detecting the rotation position of the drum, and an electromagnetic brake for locking the drum. The controller determines the suspension distance at both ends of the outer support frame based on the rotation position of the drum detected by the two rotation position detectors, and controls the two electromagnetic brakes to lock the corresponding drum after the corresponding suspension distance is reached at both ends of the outer support frame.

9. A lifting platform for controlling acid dripping from hot-dip galvanized iron tower components according to claim 8, characterized in that, Each liquid receiving unit includes a liquid receiving tank, a buffer guide plate disposed in the liquid receiving tank, an independent metering chamber connected to the bottom of the liquid receiving tank through a flexible guide pipe, and a weighing detection element disposed below the independent metering chamber. The drip detection unit is composed of the weighing detection element. The state switching component includes telescopic actuators that are connected to each liquid receiving unit. One end of each telescopic actuator is connected to the outer support frame, and the other end is connected to the corresponding liquid receiving unit. The controller controls each telescopic actuator to extend or retract, so that the liquid receiving unit at the drain end and each liquid receiving unit at the non-drain end can move independently between the retracted position and the detection position.

10. A hoisting platform for controlling acid dripping from hot-dip galvanized iron tower components according to claim 9, characterized in that, The drain port of the liquid receiving unit at the drain end is connected to an acid-resistant reflux hose. The other end of the acid-resistant reflux hose is provided with a reflux interface connected to the original pickling tank. The sealing element is a normally closed valve set between the drain port and the acid-resistant reflux hose. The external support frame is equipped with a position detection device to detect whether the lifting platform is located above the original pickling tank, and the return interface is equipped with an interface connection detection device to detect the connection status between the return interface and the original pickling tank. The controller opens the normally closed valve when the position detection device detects that the lifting platform is above the original pickling tank, the liquid receiving unit at the discharge end is in the detection position, and the interface connection detection device detects that the return interface is connected to the original pickling tank. If any of these conditions are not met, the normally closed valve remains closed.

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