hot-dip galvanized guardrail lifting device

Abstract

This application discloses a hot-dip galvanizing lifting device for guardrails, including a lifting assembly, multiple traction ropes, multiple swing assemblies, and multiple clamping assemblies. The clamping assemblies are connected to the swing assemblies, and are connected to the lifting assembly via the traction ropes. Each swing assembly includes a base, a rotating shaft, and a swing drive mechanism. The rotating shaft is rotatably connected to the base, and the swing drive mechanism is housed within the base and connected to the rotating shaft. Each clamping assembly includes a support seat, a lifting mechanism, a bearing seat, and a clamping mechanism. The support seat is fixedly connected to the rotating shaft via a connecting frame. The lifting mechanism is mounted on the support seat, the bearing seat is fixedly connected to the movable end of the lifting mechanism, and the clamping mechanism is pivotally connected to the bearing seat. This effectively improves the stability of the guardrail during lifting and the efficiency of hot-dip galvanizing. It also effectively removes residual impurities and bubbles from the guardrail surface, thus ensuring a tight bond between the zinc layer and the substrate and improving the protective performance of the guardrail.

Description

Technical Field

[0001] This application relates to the technical field of hot-dip galvanizing of guardrails, and more particularly to a hot-dip galvanizing lifting device for guardrails. Background Technology

[0002] Guardrails are typically corrugated steel plate structures, commonly found on highways, urban roads, and along bridges. Their corrugated design increases structural strength and effectively absorbs and disperses the impact force generated during vehicle collisions. Classified by material, common types include hot-dip galvanized steel guardrails and aluminum alloy guardrails, with hot-dip galvanized steel guardrails being the most widely used due to their high cost-effectiveness.

[0003] Hot-dip galvanizing involves immersing guardrail panels in molten zinc, allowing the zinc layer to firmly adhere to the steel surface, forming a dense protective film. In the field of hot-dip galvanizing guardrail panels, the lifting method widely used in related technologies involves hooking the guardrail panels into pre-drilled holes for lifting operations. This type of equipment typically consists of a lifting machine and a hook assembly. In actual operation, personnel first move the lifting machine above the guardrail panel, then control the lifting device of the lifting machine to lower the hook to a suitable height, precisely inserting the hook into the pre-drilled hole in the guardrail panel. Subsequently, the lifting device is operated again to raise the hook, thereby lifting the guardrail panel off the ground. When it is necessary to transfer the guardrail panel to the zinc pot position in the hot-dip galvanizing process, the overhead crane relies on horizontal movement on the rails, or the cantilever crane uses the rotation of the cantilever and the movement of the entire machine on the ground to lift the guardrail panel to the designated location. Since the hooks only support the guardrail panels by hooking onto the holes, if the lifting machinery shakes or operates unevenly during hoisting, the guardrail panels are prone to tilting or even falling off due to relative slippage between the holes and the hooks, affecting production safety. Therefore, when placing the guardrail panels into the zinc pot for hot-dip galvanizing, it is necessary to ensure that the guardrail panels are slowly and vertically raised and lowered, and to keep the guardrail panels as stationary as possible relative to the molten zinc to ensure the stability of the guardrail panels during hoisting. This not only affects the efficiency of hot-dip galvanizing of the guardrail panels, but also makes it difficult for impurities and bubbles remaining on the surface of the guardrail panels to be effectively discharged, hindering the tight bonding between the zinc layer and the substrate, and affecting the protective performance. Summary of the Invention

[0004] This application aims to at least partially address one of the technical problems in the related art.

[0005] Therefore, one objective of this application is to provide a hot-dip galvanizing lifting device for guardrails, which can effectively improve the stability of guardrails during hoisting and the efficiency of hot-dip galvanizing, and can also effectively remove impurities and bubbles remaining on the surface of the guardrails, thereby effectively ensuring the tight bonding between the zinc layer and the substrate and improving the protective performance of the guardrails.

[0006] To achieve the above objectives, a first aspect of this application provides a hot-dip galvanized guardrail lifting device, comprising a lifting assembly, multiple traction ropes, multiple swing assemblies, and multiple clamping assemblies. Each clamping assembly is connected to one of the multiple swing assemblies in a corresponding manner, and the clamping assemblies are connected to the lifting assembly via the multiple traction ropes. Each swing assembly includes a base, a rotating shaft, and a swing drive mechanism. The rotating shaft passes through the base and is rotatably connected to it. The swing drive mechanism is disposed within the base and connected to the rotating shaft. Each clamping assembly includes a support base, a lifting mechanism, a bearing seat, and a clamping mechanism. The support base is fixedly connected to the rotating shaft via a connecting frame. The lifting mechanism is disposed on the support base, and the bearing seat is fixedly connected to the movable end of the lifting mechanism. The clamping mechanism is disposed on the support base and is pivotally connected to the bearing seat.

[0007] The hot-dip galvanizing lifting device for guardrails in this application embodiment can effectively improve the stability of guardrails during hoisting and the efficiency of hot-dip galvanizing. It can also effectively remove impurities and bubbles remaining on the surface of the guardrails, thereby effectively ensuring the tight bond between the zinc layer and the substrate and improving the protective performance of the guardrails.

[0008] In addition, the hot-dip galvanizing lifting device for guardrails proposed in this application may also have the following additional technical features: In one embodiment of this application, the lifting assembly includes a gantry bridge and a lifting trolley that can move laterally along the track of the gantry bridge.

[0009] In one embodiment of this application, the lifting trolley is equipped with a lifting motor, a lifting drum, and a guide pulley assembly. The guide pulley assembly is mounted on the front end frame of the lifting trolley and is fixedly connected to the lifting trolley via a pulley bracket. The lifting drum is rotatably mounted on the lifting trolley, and the lifting motor is fixedly mounted on the lifting trolley, with the output shaft of the lifting motor being drively connected to the lifting drum. One end of each of the plurality of traction ropes is wound around the lifting drum, and the other end passes around the guide pulley assembly and is fixedly connected to the support base.

[0010] In one embodiment of this application, the swing drive mechanism includes a drive motor, a worm gear, and a worm wheel. The worm gear is rotatably disposed within the base, the worm wheel is sleeved on the rotating shaft, and the worm wheel is meshed with the worm gear. The drive motor is fixedly disposed within the base, and the output shaft of the drive motor is drively connected to the worm gear.

[0011] In one embodiment of this application, the lifting mechanism includes a sealing box and a hydraulic cylinder, wherein the sealing box is fixedly mounted on the support base, the hydraulic cylinder is fixedly mounted inside the sealing box, and the movable end of the hydraulic cylinder passes through the top of the sealing box and is fixedly connected to the support base.

[0012] In one embodiment of this application, the clamping mechanism includes two movable plates, a rod, a sleeve, and multiple pivot rods. The two movable plates are slidably disposed on the support base, and are located on opposite sides of the bearing base. The rod and the sleeve are fixedly disposed on opposite sides of the two movable plates, and the rod and the sleeve are pluggable and adaptable. Limiting rings are also fitted onto the rod and the sleeve. One end of each of the multiple pivot rods is pivotally connected to the two movable plates, and the other end of each pivot rod is pivotally connected to the bearing base. The pivot rods located on opposite sides of the bearing base are arranged in a V-shape.

[0013] In one embodiment of this application, the top of the support seat is provided with a limiting groove for positioning the guardrail.

[0014] Compared with the prior art, the beneficial effects of this application are as follows: 1. Improve hoisting stability: The bearing seat in the clamping assembly is connected to the support seat through the lifting mechanism to initially position the guardrail. In conjunction with the clamping mechanism, the guardrail is firmly clamped. This not only improves the connection efficiency between the clamping assembly and the guardrail, but also effectively avoids falling accidents caused by shaking or unstable operation during hoisting, greatly improving production safety. 2. Optimized Hot-Dip Galvanizing Process: The oscillating component allows the guardrail panel to rotate via a oscillating drive mechanism when immersed in molten zinc, causing the clamping assembly to oscillate. This design effectively removes impurities and air bubbles remaining on the steel surface, promoting full contact between the molten zinc and the steel surface. This results in a more uniform and firm adhesion of the zinc layer to the guardrail panel surface, improving coating quality and protective performance. Simultaneously, the oscillation action helps improve the flow of molten zinc inside the zinc pot, reducing zinc dross formation and molten zinc loss. Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the overall structure of a hot-dip galvanizing lifting device for guardrails according to an embodiment of this application; Figure 2This is a schematic diagram of the swing assembly and clamp assembly of a hot-dip galvanized guardrail lifting device according to an embodiment of this application; Figure 3 This is a left-side cross-sectional view of the swing assembly and clamp assembly of a hot-dip galvanized guardrail lifting device according to an embodiment of this application. Figure 4 This is a front cross-sectional structural schematic diagram of a hot-dip galvanized guardrail lifting device according to an embodiment of this application; Figure 5 This is a front cross-sectional view of the lifting trolley of the hot-dip galvanized guardrail lifting device according to an embodiment of this application.

[0016] As shown in the figure: 1. Lifting assembly; 101. Gantry bridge; 102. Lifting trolley; 103. Lifting motor; 104. Lifting drum; 105. Guide pulley block; 2. Traction rope; 3. Swing assembly; 31. Base; 32. Rotating shaft; 33. Swing drive mechanism; 331. Drive motor; 332. Worm gear; 333. Worm wheel; 4. Clamp assembly; 41. Support seat; 42. Lifting mechanism; 421. Sealing box; 422. Hydraulic cylinder; 43. Bearing seat; 44. Clamping mechanism; 441. Movable plate; 442. Insert rod; 443. Sleeve; 444. Pivot rod. Detailed Implementation

[0017] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0018] The hot-dip galvanizing lifting device for guardrails according to embodiments of this application will now be described in conjunction with the accompanying drawings.

[0019] like Figures 1-5 As shown, the hot-dip galvanized guardrail lifting device of this application embodiment may include a lifting component 1, multiple traction ropes 2, multiple swing components 3, and multiple clamping components 4.

[0020] Among them, multiple clamping components 4 are connected to multiple swinging components 3 in a one-to-one correspondence, and the clamping components 4 are connected to the lifting components 1 through multiple traction ropes 2.

[0021] The rocking assembly 3 may include a base 31, a rotating shaft 32, and a rocking drive mechanism 33. The rotating shaft 32 passes through the base 31 from front to back and is rotatably connected to the base 31. The rocking drive mechanism 33 is disposed inside the base 31 and is connected to the rotating shaft 32. The rocking drive mechanism 33 is connected to the front and rear ends of the rotating shaft 32 located outside the base 31.

[0022] The clamping assembly 4 may include a support base 41, a lifting mechanism 42, a bearing base 43, and a clamping mechanism 44.

[0023] The support base 41 is fixedly connected to the rotating shaft 32 via a connecting frame. The lifting mechanism 42 is mounted on the support base 41. The bearing base 43 is fixedly connected to the movable end of the lifting mechanism 42. The top of the bearing base 43 is provided with a limiting groove for positioning the guardrail. The clamping mechanism 44 is mounted on the support base 41 and is pivotally connected to the bearing base 43.

[0024] Specifically, when hot-dip galvanizing the guardrail, the relevant personnel first place the guardrail to be hot-dip galvanized in the limiting groove of the bearing seat 43. This limiting groove can initially position the guardrail and make the preset holes on the guardrail respectively between the corresponding clamping mechanisms 44. Then, the lifting mechanism 42 drives the bearing seat 43 to descend. While the bearing seat 43 descends, it drives the clamping mechanism 44 to insert into the preset holes on the guardrail to clamp and fix the guardrail, so as to firmly clamp the guardrail. Subsequently, the bearing seat 43 continues to descend until it disengages from the guardrail to avoid the bearing seat 43 causing a dead angle for galvanizing the guardrail.

[0025] Subsequently, relevant personnel activated the lifting assembly 1, using multiple traction ropes 2 to pull multiple clamping assemblies 4 and their guardrails upwards, hoisting them into the zinc pot, and immersing them in the molten zinc for galvanizing.

[0026] When the guardrail is immersed in the zinc liquid, the lifting component 1 drives the base 31 to contact the bottom of the inner wall of the zinc pot to provide auxiliary support for the guardrail. The zinc pot supports the base 31. Then, the relevant personnel start the swing drive mechanism 33 to drive the rotating shaft 32 to rotate back and forth. This causes the rotating shaft 32 to drive the support base 41 and the guardrail to swing together through the connecting frame, thereby effectively removing surface impurities and bubbles.

[0027] After hot-dip galvanizing is completed, lifting assembly 1 lifts the galvanized guardrail panel and transports it to the next process.

[0028] In one embodiment of this application, such as Figures 1-5 As shown, the lifting assembly 1 may include a gantry bridge 101 and a lifting trolley 102 that can move laterally along the track of the gantry bridge 101.

[0029] Furthermore, the lifting trolley 102 is equipped with a lifting motor 103, a lifting drum 104, and a guide pulley block 105.

[0030] The guide pulley block 105 is installed on the front frame of the lifting trolley 102 and is fixedly connected to the lifting trolley 102 through the pulley bracket. The lifting drum 104 is rotatably mounted on the lifting trolley 102. The lifting motor 103 is fixedly mounted on the lifting trolley 102, and the output shaft of the lifting motor 103 is connected to the lifting drum 104 for transmission. One end of the multiple traction ropes 2 is wound around the lifting drum 104, and the other end passes around the guide pulley block 105 and is fixedly connected to the support base 41.

[0031] It should be noted that, in this embodiment, there are two of each of the lifting motor 103, lifting drum 104 and guide pulley group 105, which are located on the front and rear sides of the lifting trolley 102, respectively, to form multi-point traction on the support seat 41 and improve the stability of the lifting of the support seat 41.

[0032] Specifically, the core of the lifting component 1 is to realize the hoisting of the guardrail panel. It is based on the gantry bridge 101 as the basic frame, providing stable support and moving track. The lifting trolley 102 can move laterally along the track of the gantry bridge 101. This movement method allows the lifting component to work flexibly in different positions. On the lifting trolley 102, the lifting motor 103 serves as the power source. When the relevant personnel issue the lifting command, the lifting motor 103 starts to operate. Its output shaft is connected to the lifting drum 104 through the transmission device, which transmits the rotational power of the lifting motor 103 to the lifting drum 104. The lifting drum 104 starts to rotate under the action of power. Since one end of multiple traction ropes 2 is wrapped around the lifting drum 104, as the drum rotates, the traction ropes 2 are gradually wound up, thereby generating an upward pulling force. The guide pulley block 105 is installed on the front frame of the lifting trolley 102. Its function is to guide the direction of the traction rope 2, ensuring that the traction rope 2 will not deviate or entangle during the lifting process, so that the tension can be stably and accurately transmitted to the support seat 41 of the clamp assembly 4. Through the winding of the lifting drum 104 and the guidance of the guide pulley block 105, the traction rope 2 pulls the support seat 41 and the clamp assembly 4 and the guardrail plate connected thereto to lift upward, completing the hoisting operation. At the same time, the lateral movement function of the lifting trolley 102 can accurately transport the hoisted guardrail plate to the designated location such as the zinc pot.

[0033] In one embodiment of this application, such as Figures 1-5 As shown, the swing drive mechanism 33 may include a drive motor 331, a worm gear 332, and a worm wheel 333.

[0034] The worm 332 is rotatably mounted inside the base 31, the worm wheel 333 is sleeved on the rotating shaft 32 and meshes with the worm 332, and the drive motor 331 is fixedly mounted inside the base 31 and the output shaft of the drive motor 331 is connected to the worm 332 for transmission.

[0035] Specifically, the swaying component 3 is mainly responsible for making the guardrail plate sway during the galvanizing process to remove impurities and bubbles. Its working principle is based on mechanical transmission. The drive motor 331 in the swaying drive mechanism 33 is the power starting point of the entire swaying action. When the guardrail plate needs to sway, the drive motor 331 is started.

[0036] The output shaft of the drive motor 331 is connected to the worm gear 332. The operation of the motor drives the worm gear 332 to rotate. The worm gear 332 meshes with the worm wheel 333. The rotation of the worm gear 332 transmits power to the worm wheel 333 through meshing transmission, causing the worm wheel 333 to rotate around its own axis. Since the worm wheel 333 is sleeved on the rotating shaft 32, the rotation of the worm wheel 333 will drive the rotating shaft 32 to rotate together. The rotating shaft 32 passes through the base 31 from front to back and is rotatably connected to the base 31. The base 31 plays a supporting and fixing role in this process. When the rotating shaft 32 rotates, the support seat 41, which is fixedly connected to it through the connecting frame, will also rotate. This will cause the clamp assembly 4 on the support seat 41 and the guardrail to swing together. By controlling the forward and reverse rotation of the drive motor 331, the rotating shaft 32 can be reciprocated, so that the guardrail can swing continuously in the zinc liquid, effectively removing impurities and bubbles on the surface and ensuring the quality of galvanization.

[0037] In one embodiment of this application, such as Figures 1-5 As shown, the lifting mechanism 42 may include a sealing box 421 and a hydraulic cylinder 422.

[0038] The sealing box 421 is fixedly mounted on the support base 41, and the hydraulic cylinder 422 is fixedly mounted inside the sealing box 421. The movable end of the hydraulic cylinder 422 passes through the top of the sealing box 421 and is fixedly connected to the bearing base 43.

[0039] Specifically, relevant personnel drive the support seat 43 to rise or fall by activating the hydraulic cylinder 422.

[0040] In one embodiment of this application, such as Figures 1-5 As shown, the clamping mechanism 44 may include two movable plates 441, a insertion rod 442, a sleeve 443, and multiple pivot rods 444.

[0041] Two movable plates 441 are slidably mounted on the support base 41, and the two movable plates 441 are located on both sides of the bearing base 43. The insertion rod 442 and the sleeve 443 are fixedly mounted on the side of the two movable plates 441 that are close to each other. The insertion rod 442 and the sleeve 443 can be inserted and adapted. Limiting rings are also sleeved on the insertion rod 442 and the sleeve 443 respectively. One end of a plurality of pivot rods 444 is pivotally connected to the two movable plates 441, and the other end of the plurality of pivot rods 444 is pivotally connected to the bearing base 43. The pivot rods 444 located on both sides of the bearing base 43 are arranged in a V-shape.

[0042] Specifically, the working principle of the clamp assembly 4 revolves around the fixing and releasing of the guardrail plate, involving the coordinated operation of multiple components. First, when the relevant personnel place the guardrail plate to be hot-dip galvanized into the limiting groove of the bearing seat 43, the shape of the limiting groove is adapted to the guardrail plate, which can initially position the guardrail plate and ensure that the guardrail plate is in the correct position, facilitating subsequent clamping operations. At this time, the hydraulic cylinder 422 in the lifting mechanism 42 starts to work. The hydraulic cylinder 422 is fixed in the sealing box 421, and the sealing box 421 is fixed on the support base 41, providing protection and installation foundation for the hydraulic cylinder 422. The movable end of the hydraulic cylinder 422 retracts and drives the bearing seat 43 to descend. During the descent of the bearing seat 43, since one end of multiple pivot rods 444 is pivotally connected to two movable plates 441 and the other end is pivotally connected to the bearing seat 43, and they are arranged in a V-shape, the descent of the bearing seat 43 will push the two movable plates 441 to slide laterally on the support base 41 through the lever action of the pivot rods 444. As the movable plate 441 slides, the insertion rod 442, which is fixed on one side of the movable plate 441 and close to each other, is gradually inserted into the pre-set hole in the guardrail plate and engages with the sleeve 443. The limiting ring on the insertion rod 442 and the sleeve 443 limits the insertion depth and prevents it from falling off, thereby achieving a firm clamping of the guardrail plate. After clamping is completed, the bearing seat 43 continues to descend until it is disengaged from the guardrail plate, so as to avoid the bearing seat 43 affecting the galvanizing effect of the guardrail plate. When the guardrail panel needs to be released after hot-dip galvanizing, the hydraulic cylinder 422 reverses its operation, and the movable end of the hydraulic cylinder 422 extends, driving the bearing seat 43 to rise. During the rise of the bearing seat 43, the pivot rod 444 pulls the movable plate 441 to slide in the opposite direction, so that the insertion rod 442 is pulled out from the hole in the guardrail panel, releasing the clamp on the guardrail panel so that the guardrail panel can be removed.

[0043] Specifically, the overall workflow of this application is as follows: Guardrail plate loading and initial positioning: Relevant personnel place the guardrail plate to be hot-dip galvanized into the limiting groove on the top of the bearing seat 43 of the clamp assembly 4. The shape of the limiting groove is adapted to the guardrail plate, which can initially position the guardrail plate and ensure that the guardrail plate is in the correct position. At the same time, the preset holes on the guardrail plate are respectively positioned between the corresponding clamping mechanisms 44, preparing for subsequent clamping operations. Guardrail clamping and fixing: After positioning, the hydraulic cylinder 422 in the lifting mechanism 42 is activated. When the piston of the hydraulic cylinder 422 retracts, it drives the bearing seat 43 to descend. Since one end of multiple pivot rods 444 is pivotally connected to two movable plates 441 and the other end is pivotally connected to the bearing seat 43 and is set in a V-shape, the descent of the bearing seat 43, through the lever action of the pivot rods 444, pushes the two movable plates 441 to slide laterally on the support seat 41. As the movable plates 441 slide, the insertion rods 442 fixed on them are gradually inserted into the preset holes of the guardrail and are engaged with the sleeves 443. The limiting rings on the insertion rods 442 and the sleeves 443 limit the insertion depth and prevent them from falling off, thus achieving a firm clamping of the guardrail. Subsequently, the bearing seat 43 continues to descend until it disengages from the guardrail, avoiding dead angles in the galvanization of the guardrail. Guardrail hoisting: After the guardrail is clamped and fixed, the lifting assembly 1 is started. The relevant personnel issue the lifting command, and the lifting motor 103 on the lifting trolley 102 starts. Its output shaft drives the lifting drum 104 to rotate through the transmission device. One end of multiple traction ropes 2 is wound around the lifting drum 104. As the drum rotates, the traction ropes 2 are gradually wound up, generating an upward pull. The guide pulley group 105 guides the traction ropes 2 to ensure that the pull is stably and accurately transmitted to the support seat 41 of the clamp assembly 4. Under the pull of the traction ropes 2, the support seat 41 and the connected clamp assembly 4 and guardrail are lifted upward. At the same time, the lifting trolley 102 can move laterally to hoist the guardrail above the zinc pot and lower it accurately so that the guardrail is immersed in the zinc liquid for galvanizing. Auxiliary treatment during galvanizing: When the guardrail is immersed in the molten zinc, the lifting component 1 continues to operate, driving the base 31 of the swing component 3 to contact the bottom of the inner wall of the zinc pot. The zinc pot supports the base 31, which serves to assist in supporting the guardrail. Then, the drive motor 331 in the swing drive mechanism 33 is started. Its output shaft drives the worm 332 to rotate. The worm 332 meshes with the worm wheel 333, causing the worm wheel 333 to rotate around its own axis. This, in turn, drives the worm wheel 333 sleeved on the rotating shaft 32 to rotate together with the rotating shaft 32. The rotation of the rotating shaft 32 drives the support base 41 and the guardrail to swing together through the connecting frame. By controlling the forward and reverse rotation of the drive motor 331, the reciprocating rotation of the rotating shaft 32 is realized, causing the guardrail to swing continuously in the molten zinc, effectively removing surface impurities and bubbles, and ensuring the quality of galvanizing. Galvanizing Completion and Material Conveying: After the hot-dip galvanizing process is completed, the lifting assembly 1 is restarted. The lifting motor 103 drives the lifting drum 104 to rotate, and the traction rope 2 is wound to lift the galvanized guardrail. The lifting trolley 102 moves laterally along the track of the gantry bridge 101 to transport the guardrail to the next process. When it is necessary to remove the galvanized guardrail, the relevant personnel control the hydraulic cylinder 422 in the lifting mechanism 42 to work in reverse. The piston extends and drives the bearing seat 43 to rise. The rise of the bearing seat 43 pulls the movable plate 441 to slide in the reverse direction through the pivot rod 444, so that the insertion rod 442 is pulled out from the hole in the guardrail, releasing the clamp on the guardrail for further processing or storage.

[0044] In summary, the hot-dip galvanizing lifting device for guardrails in this application embodiment can effectively improve the stability of guardrails during hoisting and the efficiency of hot-dip galvanizing. It can also effectively remove impurities and bubbles remaining on the surface of the guardrails, thereby effectively ensuring the tight bond between the zinc layer and the substrate and improving the protective performance of the guardrails.

[0045] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0047] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A hot-dip galvanizing lifting device for guardrails, characterized in that, It includes a lifting assembly, multiple traction ropes, multiple swing assemblies, and multiple clamping assemblies, among which, Each of the clamping assemblies is connected to a corresponding swing assembly, and the clamping assemblies are connected to the lifting assembly via multiple traction ropes. The rocking assembly includes a base, a rotating shaft, and a rocking drive mechanism, wherein the rotating shaft passes through the base and is rotatably connected to the base, and the rocking drive mechanism is disposed within the base and is connected to the rotating shaft; The clamping assembly includes a support base, a lifting mechanism, a bearing base, and a clamping mechanism, wherein, The support base is fixedly connected to the rotating shaft via a connecting frame; The lifting mechanism is mounted on the support base, and the bearing base is fixedly connected to the movable end of the lifting mechanism; The clamping mechanism is disposed on the support base and is pivotally connected to the bearing base.

2. The hot-dip galvanizing lifting device for guardrails according to claim 1, characterized in that, The lifting assembly includes a gantry bridge and a lifting trolley that can move laterally along the track of the gantry bridge.

3. The hot-dip galvanizing lifting device for guardrails according to claim 2, characterized in that, The lifting trolley is equipped with a lifting motor, a lifting drum, and a guide pulley block. The guide pulley assembly is installed on the front frame of the lifting trolley and is fixedly connected to the lifting trolley through the pulley bracket; The lifting drum is rotatably mounted on the lifting trolley, the lifting motor is fixedly mounted on the lifting trolley, and the output shaft of the lifting motor is connected to the lifting drum in a transmission manner. One end of each of the traction ropes is wound around the lifting drum, and the other end passes over the guide pulley group and is fixedly connected to the support base.

4. The hot-dip galvanizing lifting device for guardrails according to claim 1, characterized in that, The swing drive mechanism includes a drive motor, a worm gear, and a worm wheel, wherein, The worm gear is rotatably disposed within the base, the worm wheel is sleeved on the rotating shaft, and the worm wheel is meshed with the worm gear; The drive motor is fixedly installed inside the base, and the output shaft of the drive motor is connected to the worm gear drive.

5. The hot-dip galvanizing lifting device for guardrails according to claim 1, characterized in that, The lifting mechanism includes a sealed box and a hydraulic cylinder, wherein... The sealing box is fixedly mounted on the support base, and the hydraulic cylinder is fixedly mounted inside the sealing box. The movable end of the hydraulic cylinder passes through the top of the sealing box and is fixedly connected to the bearing base.

6. The hot-dip galvanizing lifting device for guardrails according to claim 1, characterized in that, The clamping mechanism includes two movable plates, a insertion rod, a sleeve, and multiple pivot rods, wherein, The two movable plates are respectively slidably disposed on the support base, and the two movable plates are respectively located on both sides of the bearing base; The insertion rod and the sleeve are respectively fixedly installed on the side of the two movable plates that are close to each other, and the insertion rod and the sleeve can be inserted and adapted. Limiting rings are also fitted onto the insertion rod and the sleeve, respectively; One end of each of the multiple pivot rods is pivotally connected to one of the two movable plates, and the other end of each of the multiple pivot rods is pivotally connected to the bearing seat. The pivot rods located on both sides of the bearing seat are arranged in a V-shape.

7. The hot-dip galvanizing lifting device for guardrails according to claim 1, characterized in that, The top of the support seat is provided with a limiting groove for positioning the guardrail.

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