An energy-saving rare earth alloy hot-dip galvanizing device

Abstract

The present invention discloses an energy-saving rare earth alloy hot-dip galvanizing device, comprising a hoisting mechanism for hoisting a workpiece to be plated into a plating solution, wherein an output end of the hoisting mechanism is provided with a frame, wherein a driving member and a plurality of plates arranged linearly on the frame are provided on the frame, wherein each plate hoists a workpiece to be plated via a set of hoisting ropes, and the driving member drives one of the plates to move, and two adjacent plates move in opposite directions via a transmission assembly. The present invention drives a plate to move via the driving member, and the plate can drive adjacent plates to move in opposite directions via the transmission assembly, so that each plate can drive the hoisted workpiece to be plated to move via the hoisting rope connected thereto, and the two adjacent workpieces to be plated can move in opposite directions in the plating solution, and the contact positions of the two workpieces to be plated will be staggered, so that the portion of the workpiece to be plated that is blocked by the adjacent workpiece to be plated can also be galvanized.

Description

Technical Field

[0001] The invention relates to the technical field related to metal surface processing, in particular to an energy-saving rare earth alloy hot-dip galvanizing device. Background Art

[0002] As is known to all, hot-dip galvanizing is a method of metal corrosion protection, which involves immersing the rust-removed workpiece to be plated in molten zinc at around 500°C, so that a zinc layer adheres to the surface of the steel component, thereby achieving the purpose of corrosion protection. Rare earth alloy hot-dip galvanizing uses rare earth alloy molten liquid as the hot-dip galvanizing material to plate the surface of the steel component.

[0003] The process flow of hot-dip galvanizing of rare earth alloys includes the following steps:

[0004] Surface preparation: First, the surface of the part to be plated needs to be prepared, including removing oil, oxides and other contaminants to ensure the adhesion and quality of the coating to the substrate;

[0005] Pretreatment: After the surface preparation is completed, the part to be plated is immersed in an acidic solution for pretreatment. The purpose of pretreatment is to remove oxides and other impurities on the surface and form a uniform activation layer on the surface of the material to improve the adhesion of the coating.

[0006] Rare earth alloy melting: heating the rare earth alloy material to the melting point to make it into liquid state. Rare earth alloy is usually composed of rare earth elements and other metal elements, with a low melting point and good bath performance;

[0007] Hot dip galvanizing: Immerse the pre-treated workpiece to be plated in a rare earth alloy melt so that its surface contacts the melt. At high temperatures, the metal elements in the melt react with the iron elements on the surface of the workpiece to be plated to form a uniform coating. The rare earth alloy hot dip galvanized coating has good corrosion resistance and adhesion.

[0008] Cooling and cleaning: After the plated parts are removed from the molten liquid, they need to be cooled and cleaned. Cooling can solidify the coating, and cleaning can remove residual liquid and impurities on the surface.

[0009] The shortcoming of the existing technology is that the hot-dip galvanizing device places the workpieces to be plated into the plating solution one by one through a lifting mechanism. Obviously, this working method is inefficient. If multiple workpieces to be plated are placed in the plating solution at the same time in a limited galvanizing space, there will be contact between the multiple workpieces to be plated, resulting in uneven galvanizing due to contact between the workpieces. Summary of the Invention

[0010] The purpose of the present invention is to provide an energy-saving rare earth alloy hot-dip galvanizing device to solve the technical problems in the related art.

[0011] In order to achieve the above object, the present invention provides the following technical solutions:

[0012] An energy-saving rare earth alloy hot-dip galvanizing device includes a hoisting mechanism for hoisting a workpiece to be plated into a plating solution. A frame is provided at the output end of the hoisting mechanism. A driving member and a plurality of plates arranged linearly on the frame are provided on the frame. Each plate hoists a workpiece to be plated via a set of hoisting ropes. The driving member drives one of the plates to move, and two adjacent plates move in opposite directions via a transmission assembly.

[0013] As mentioned above, the number of each group of the suspension ropes is two, and the two suspension ropes are respectively installed at both ends of the length direction of the plate body. The two suspension ropes lift the workpieces to be plated and move synchronously with the plate body.

[0014] As mentioned above, the number of the lifting ropes in each group is two, and the two lifting ropes are respectively installed at the two ends of the length direction of the plate body. A rotating wheel is set on the frame body at the position corresponding to the two ends of each length direction of the plate body. Each lifting rope starts from the end of the plate body to which it is connected and passes through the rotating wheel to lift the workpiece to be plated; when the plate body moves along its own length direction, one end of the workpiece to be plated in the length direction rises and the other end falls.

[0015] As mentioned above, the driving member includes a driving source provided on the frame and a first gear provided at the output end of the driving source, wherein a first rack is provided on one of the plates, and the first gear is meshed with the first rack.

[0016] As mentioned above, the transmission assembly includes a second gear disposed between two adjacent plates, a second rack is disposed on each of the opposite surfaces of the two adjacent plates, and the second gear is meshed with the second rack at the corresponding position.

[0017] As mentioned above, the transmission assembly includes a swing rod movably arranged between two adjacent plate bodies, and the length direction of the swing rod is not parallel to the length direction of the plate body. When the two plate bodies at adjacent positions slide in opposite directions, they move away from each other under the action of the swing rod, and the two wheels corresponding to each plate body can move in the width direction following the plate body.

[0018] As mentioned above, the plate body provided with the first rack among the plurality of plates is located at the outermost edge. When the plate body moves along the length direction, the remaining plates are sequentially unfolded along the width direction and are staggered in the length direction.

[0019] As mentioned above, the lifting mechanism includes a plurality of rollers with lifting cables wound thereon, and the plurality of rollers correspond one to one with the plurality of plate bodies. By reducing the radial size of the rollers, the two ends of the lifting cables wound on the rollers are away from the rollers; the lifting ropes are slidably arranged at the ends of the plate bodies, and each end of the lifting cables is connected to a lifting rope at a corresponding position. When the plurality of plate bodies are driven by the lifting ropes to lift the workpieces to be plated and the workpieces to be plated at adjacent positions are staggered in the length direction, the lifting ropes and the plate bodies are fixed by a locking mechanism. When the lifted workpieces to be plated need to be immersed in the plating solution, the locking mechanism contacts and locks the lifting ropes and the plate bodies.

[0020] As mentioned above, during the expansion stroke of the remaining plates in the width direction, the rollers follow the corresponding plates in the width direction, and two adjacent rollers are connected by a shaft that can be telescoped along the axial direction.

[0021] As mentioned above, when the two rollers at adjacent positions rotate in the same direction, one roller reels one end of the suspension cable and releases the other end, and the other roller releases one end of the suspension cable and reels the other end.

[0022] The beneficial effect of the present invention is that: a plate body is driven to move by a driving member, and the plate body can drive the adjacent plate body to move in the opposite direction through the transmission component. In this way, each plate body can drive the hoisted workpiece to be plated to move through the lifting rope connected to it, and the two adjacent workpieces to be plated can move in opposite directions in the plating solution, and the contact positions of the two workpieces to be plated will be staggered, so that the part of the workpiece to be plated that is blocked by the adjacent workpiece to be plated can also be galvanized. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 This is a schematic cross-sectional structural diagram of an energy-saving rare earth alloy hot-dip galvanizing device along the length direction of a plate body provided in a first embodiment of the present invention;

[0025] Figure 2 This is a schematic cross-sectional structure diagram of an energy-saving rare earth alloy hot-dip galvanizing device along the length direction of the plate body provided in the second embodiment of the present invention;

[0026] Figure 3 This is a schematic top view of the structure of an energy-saving rare earth alloy hot-dip galvanizing device provided in a second embodiment of the present invention;

[0027] Figure 4 This is a schematic top plan view of the structure of an energy-saving rare earth alloy hot-dip galvanizing device provided in a third embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the three-dimensional structure of an energy-saving rare earth alloy hot-dip galvanizing device provided in a fourth embodiment of the present invention;

[0029] Figure 6 This is a schematic top plan view of the structure of an energy-saving rare earth alloy hot-dip galvanizing device provided in the fourth embodiment of the present invention.

[0030] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure at AA in FIG;

[0031] Figure 8 for Figure 6 Schematic diagram of the cross-sectional structure at BB in FIG;

[0032] Figure 9 for Figure 7 Schematic diagram of the enlarged structure at C in FIG;

[0033] Figure 10 This is a schematic diagram of the three-dimensional structure of a roller body of an energy-saving rare earth alloy hot-dip galvanizing device provided in a fourth embodiment of the present invention;

[0034] Figure 11 This is a schematic diagram of the solid axial cross-sectional structure of an energy-saving rare earth alloy hot-dip galvanizing device provided in the fourth embodiment of the present invention.

[0035] Description of reference numerals:

[0036] 1. Lifting mechanism; 10. Lifting cable; 11. Roller body; 110. Radial groove; 111. Roller; 112. Rotating shaft; 113. Moving block; 114. Connecting rod; 12. Base body; 2. Frame body; 20. First gear; 21. First rack; 22. Plate body; 3. Lifting rope; 4. Transmission assembly; 40. Second gear; 41. Second rack; 42. Swinging rod; 43. Sliding rod; 44. Sliding groove; 5. Rotating wheel; 6. Locking mechanism; 60. Top block; 61. Locking rod; 62. Locking groove; 63. Baffle; 64. Extrusion groove. DETAILED DESCRIPTION

[0037] In order to make those skilled in the art better understand the technical solution of the present invention, Figure 1 To the attached Figure 11 The present invention is further described in detail.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "degrees", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0039] In a first embodiment of the present invention, an energy-saving rare earth alloy hot-dip galvanizing device is provided, including a hoisting mechanism 1 for hoisting the workpiece to be plated into the plating solution, a frame 2 is provided at the output end of the hoisting mechanism 1, a driving member and a plurality of plates 22 arranged linearly on the frame 2 are provided on the frame 2, each plate 22 is hoisted with a workpiece to be plated by a set of lifting ropes 3, the driving member drives one of the plates 22 to move, and two adjacent plates 22 move in opposite directions through the action of a transmission component 4.

[0040] Specifically, the hoisting mechanism 1 includes a hook for lifting the workpiece to be plated, a cable for driving the hook to move in the vertical direction, and a winding roller for winding and releasing the cable. The winding roller is rotated by a motor. When the workpiece to be plated needs to be hot-dip galvanized, the two ends of the workpiece to be plated are first connected with hooks. In this embodiment, the workpiece to be plated is a long strip. The remaining embodiments below are all based on this. After the workpiece to be plated is connected to the hook, the output end of the motor drives the winding roller to rotate. The rotation of the winding roller can drive the cable to be wound or released. In this embodiment, , with the winding roller rotating clockwise to wind up the cable and counterclockwise to release the cable as the standard, when it is necessary to lift the workpiece, the output end of the motor drives the winding roller to rotate clockwise to lift the workpiece to be plated through the winding cable, and the lifted workpiece to be plated needs to be moved above the liquid tank containing the plating solution. Therefore, a mechanism that can drive the workpiece to be plated to move toward the liquid tank is required, such as a screw transmission assembly 4 that drives the lifting mechanism 1 to move as a whole. This is existing technology and will not be described in detail. After the workpiece to be plated reaches just above the liquid tank, the output end of the motor drives the winding roller to rotate counterclockwise to release the cable so that the workpiece to be plated enters the plating solution. During hot-dip galvanizing operation, due to the limited size of the liquid tank, the number of parts to be hot-dip galvanized in the liquid tank at one time is also limited. When multiple parts to be plated are hoisted together, they will come into contact with each other. After these parts enter the plating solution, they will still come into contact with each other. The contact areas between the parts to be plated are equivalent to being covered, so that the plating solution cannot come into contact with the parts. In this way, uneven galvanizing will occur on the surface of the parts to be plated. In this embodiment, the hoisting mechanism 1 is used to drive the frame 2 to move in the vertical direction. Each plate 22 is connected to the frame 2 by a set of hoisting ropes 3. The workpiece to be plated is hoisted, that is, a hook is installed on the hoisting rope 3, and the hook is used to connect the workpiece to be plated. When the workpiece to be plated enters the plating solution, the driving part can drive one of the plates 22 to move along its own length direction, and then the plate 22 drives the plate 22 in the adjacent position to move in the opposite direction through the transmission component 4. There is a transmission component 4 between the two adjacent plates 22, so if one of the two adjacent plates 22 moves, the other moves in the opposite direction. In this way, the workpieces to be plated that are in contact with each other move relative to each other, and the covered part will also come into contact with the plating solution and be galvanized.

[0041] The beneficial effect of this embodiment is that: a plate body 22 is driven to move by a driving member, and the plate body 22 can drive the adjacent plate body 22 to move in the opposite direction through the transmission component 4. In this way, each plate body 22 can drive the suspended workpiece to be plated to move through the hanging rope 3 connected thereto, and the two adjacent workpieces to be plated can move in opposite directions in the plating solution, and the contact positions of the two workpieces to be plated will be staggered, so that the part of the workpiece to be plated that is blocked by the adjacent workpiece to be plated can also be galvanized.

[0042] Preferably, the driving member includes a driving source provided on the frame 2 and a first gear 20 provided at the output end of the driving source, wherein a first rack 21 is provided on one of the plate bodies 22, and the first gear 20 is meshed with the first rack 21; specifically, when the driving source is working, its power output end drives the first gear 20 connected thereto to rotate, and the first gear 20 rotates, thereby driving the first rack 21 meshed therewith to move in the direction of its own length. Driven by the first rack 21, the plate body 22 connected thereto can also move left or right. Then, the plate bodies 22 at adjacent positions move in the opposite direction to the plate body 22 provided with the first rack 21 under the action of the transmission assembly 4. Among multiple plate bodies 22, when one plate body 22 moves left or right, the plate bodies 22 at adjacent positions to the plate body 22 all move in the opposite direction.

[0043] Preferably, the number of the hanging ropes 3 in each group is two, and the two hanging ropes 3 are respectively installed at the two ends of the plate body 22 in the length direction. The two hanging ropes 3 hang the two ends of the workpiece to be plated to move synchronously with the plate body 22; specifically, the movement of the plate body 22 drives the hung workpiece to be plated to move synchronously through the hanging ropes 3. After the workpiece to be plated enters the plating solution, the two plate bodies 22 at adjacent positions can be staggered with each other in the length direction, so that the position where the two adjacent workpieces to be plated meet is exposed to the plating solution.

[0044] In the second embodiment of the present invention, the number of the lifting ropes 3 in each group is two, and the two lifting ropes 3 are respectively installed at the two ends of the length direction of the plate body 22. A rotating wheel 5 is provided on the frame body 2 at the positions corresponding to the two ends of each length direction of the plate body 22. Each of the lifting ropes 3 starts from the end of the plate body 22 to which it is connected and passes through the rotating wheel 5 to lift the workpiece to be plated; when the plate body 22 moves along its own length direction, one end of the workpiece to be plated in the length direction rises and the other end falls.

[0045] Specifically, when the plate body 22 moves along the length direction, such as moving to the left, the hanging rope 3 located at the right end of the plate body 22 will be turned by the turning wheel 5 located at the right end of the plate body 22, pulling the right end of the workpiece to be plated upward, and the hanging rope 3 located at the left end of the plate body 22 will pass through the turning wheel 5 at the left end downward under the action of the gravity of the left end of the workpiece to be plated, so that the workpiece to be plated enters the plating solution in an inclined posture, that is, inclined to the upper right. After the workpiece to be plated completely enters the plating solution, the plate body 22 moves to the right, and the left end of the plate body 22 pulls the left end of the workpiece to be plated upward through the hanging rope 3. The right end of the plate body 22 has no pulling force on the hanging rope 3, so the hanging rope 3 moves downward under the action of the gravity of the right end of the workpiece to be plated, that is, inclined to the upper left. In this process, two workpieces to be plated at adjacent positions can be staggered in opposite directions to avoid the contact position from being unable to contact the plating solution. When the workpiece to be plated comes out of the plating solution, it is actually in an upper left tilted posture, that is, the workpiece to be plated enters the plating solution in an upper right tilted posture and leaves the plating solution in an upper left tilted posture. The workpiece to be plated completes the conversion of the two postures in the plating solution, which brings two advantages: first, the part of the workpiece to be plated that enters the plating solution first leaves the plating solution first, and the part that enters the plating solution later leaves the plating solution later, so that the hot-dip galvanizing time of the entire workpiece to be plated remains basically consistent, thereby improving the uniformity of galvanizing of the workpiece to be plated; second, the upper right tilted posture of the workpiece to be plated is converted into an upper left tilted posture in the plating solution, and the two adjacent workpieces to be plated move in opposite directions, so that the parts where the two meet are staggered, so that each workpiece to be plated can be completely hot-dip galvanized; third, multiple workpieces to be plated enter the plating solution gradually instead of entering as a whole, reducing boiling and splashing of the plating solution.

[0046] The transmission assembly 4 needs to meet the requirement that when one of the plates 22 moves to the left, the plate 22 at the adjacent position moves to the right. In this embodiment, preferably, the transmission assembly 4 includes a second gear 40 provided between two adjacent plates 22, and a second rack 41 is provided on each of the opposite surfaces of the two adjacent plates 22, and the second gear 40 is meshed with the second rack 41 at the corresponding position; specifically, when the power output end of the driving source drives the first gear 20 to rotate, the first gear 20 drives the first rack 21 to move, and the movement of the first rack 21 drives the plate 22 connected thereto to move synchronously. The movement of the plate 22 drives the second rack 41 connected thereto to move, and the movement of the second rack 41 drives the second gear 40 meshing therewith to rotate, and the second gear 40 drives the second rack 41 on the other plate 22 at the adjacent position to move in the opposite direction. Since a second rack 41 is provided on each plate 22, a second gear 40 is provided between the two plate bodies 22 at adjacent positions. In this way, when one of the plate bodies 22 moves along the length direction, the plate body 22 at the adjacent position must move in the opposite direction, thereby realizing the position change of the two adjacent pieces to be plated in the plating solution as mentioned above.

[0047] In the third embodiment of the present invention, the transmission assembly 4 includes a swing rod 42 movably arranged between two adjacent plates 22. The length direction of the swing rod 42 is not parallel to the length direction of the plate 22. When the two plates 22 at adjacent positions slide in opposite directions, they move away from each other under the action of the swing rod 42, and the two wheels 5 corresponding to each plate 22 can move in the width direction following the plate 22.

[0048] Specifically, in the first embodiment and the second embodiment of the present invention, two adjacent workpieces to be plated only move in opposite directions in the plating solution, so that the contact positions can be staggered. Although the originally covered parts are exposed to the plating solution and galvanized, when the two adjacent workpieces to be plated move relative to each other, there are still contact parts between the two. When the contact parts move relative to each other, friction will be generated, thereby causing the galvanized layer on the surface of the workpiece to be plated to wear. After the worn areas are galvanized again, the galvanized surface becomes uneven.

[0049] Therefore, in this embodiment, the second gear 40 and the second rack 41 used in the above-mentioned are replaced by a swing rod 42, that is, a slide groove 44 is provided on the swing rod 42 between the two adjacent plates 22, and a slide rod 43 is fixed to the corresponding position of each slide groove 44 on the frame 2. The slide rod 43 can slide along the length direction of the slide groove 44, that is, the length direction of the swing rod 42 in the slide groove 44 at the corresponding position. While sliding, the slide rod 43 can rotate in the slide groove 44. In the initial state, that is, both ends of the length direction of all the plates 22 are aligned, and there is no misalignment in the width direction, the length direction of the swing rod 42 is not parallel to the length direction of the plate 22, that is, the swing rod 42 is between the two adjacent plates 22 at this time. The two plates 22 hinged at the two ends are adjacent to each other. When the first rack 21 drives the plate 22 connected thereto to move in the length direction, the plate 22 acts as the active plate, and the plate 22 adjacent thereto acts as the driven plate. At this time, the position of the slide bar 43 in the slide groove 44 is close to the driven plate. When the active plate slides in the length direction, the distance between the position where the active plate is hinged to the swing rod 42 and the slide rod 43 is shortened. Then the swing rod 42 slides on the slide rod 43, that is, the position where the slide groove 44 and the slide rod 43 initially contact each other needs to be away from the slide rod 43, and the other end of the slide groove 44 gradually approaches the slide rod 43. The moving plate will gradually move away from the active plate during the movement of the swing rod 42. The active plate drives the driven plate to move through the swing rod 42, and the driven plate will drive the plate 22 at another adjacent position except the active plate to move. Then the original driven plate becomes the active plate, and the plate 22 at another adjacent position becomes the driven plate. The subsequent movement is consistent with the above. For ease of understanding, the plate 22 with the first rack 21 is named No. 1, and the remaining plates 22 are named No. 2, No. 3, No. 4 on both sides of No. 1 along the width direction... and so on. When No. 1 pushes No. 2 to move 3 cm in the width direction through the swing stem 42, No. 3, No. 4, No. 5... can be regarded as a whole along the width The plate 22 moves 3 cm in the width direction. When No. 3 slides in the length direction, No. 4 is pushed to move 3 cm by the swing rod 42. Then No. 4, No. 5, No. 6... can be regarded as a whole moving 3 cm in the width direction. The same is true for the movement of other plates 22. The advantage of such a setting is that when the plate 22 connected to the first rack 21 moves, under the action of the swing rod 42, the plates 22 in adjacent positions can move in opposite directions and gradually move away from each other in the width direction. Then, when the workpiece to be plated in the plating solution is converted from the upper right tilted posture to the upper left tilted posture or from the upper left tilted posture to the upper right tilted posture, the positions of the two adjacent workpieces to be plated that were originally in contact can be completely separated.

[0050] Preferably, the plate 22 provided with the first rack 21 among the plurality of plates 22 is located at the outermost edge. When the plate 22 moves along the length direction, the remaining plates 22 are unfolded in sequence along the width direction and are staggered in the length direction.

[0051] Specifically, according to the above, each plate body 22 can be used as an active plate body, that is, any plate body 22 can be selected, the first rack 21 can be arranged on it, and then some of the aforementioned working processes can be realized. However, in the prior art, after the workpiece to be plated enters the plating solution, an oxide film will be formed on the surface of the plating solution due to the electrochemical reaction process. The oxide film needs to be removed in advance when the workpiece comes out of the plating solution (in the prior art, the oxide layer on the surface of the plating solution is removed by manually scraping it with a scraper, that is, scraping from one side of the liquid surface to the other, and then gathering the oxide film together and scraping it into the liquid tank) to avoid the oxide film adhering to the plating surface of the workpiece. When in the plating solution, the two workpieces to be plated at adjacent positions do not contact, and the surface plating of the workpiece will be completely formed. When the workpiece comes out of the plating solution, the two workpieces at adjacent positions can contact each other.

[0052] Therefore, in this embodiment, when the workpiece to be plated enters the plating solution, all the plates 22 are synchronously expanded in the width direction and staggered in the length direction. Before the workpiece to be plated comes out of the plating solution, that is, after the plating layer of the workpiece is completely formed, all the plates 22 are reset in the width direction and the length direction, so that all the plated workpieces will be close together again. Before the workpiece comes out of the plating solution, the staff will scrape the oxide layer on the liquid surface directly above the workpiece to a position that is not directly above the workpiece. Then, after the workpiece comes out of the plating solution, the staff will scrape the oxide layer together and remove it.

[0053] In a fourth embodiment of the present invention, the lifting mechanism 1 includes a plurality of roller bodies 11 on which lifting cables 10 are wound, and the plurality of roller bodies 11 correspond one to one with a plurality of plate bodies 22. By reducing the radial dimension of the roller body 11, the two ends of the lifting cables 10 wound on the roller body 11 are away from the roller body 11; the lifting rope 3 is slidably arranged at the end of the plate body 22, and each end of the lifting cable 10 is connected to a lifting rope 3 at a corresponding position. When the plurality of plate bodies 22 are driven by the lifting rope 3 to lift the workpieces to be plated and the workpieces to be plated at adjacent positions in the length direction, the lifting rope 3 and the plate body 22 are fixed by a locking mechanism 6. When the lifted workpieces to be plated need to be immersed in the plating solution, the locking mechanism 6 releases the lock on the lifting rope 3 and the plate body 22.

[0054] The first rack 21 is slidably arranged on the corresponding plate 22 along the length direction, and the first gear 20 is installed on the end of the roller body 11 corresponding to the plate 22 connected to the first rack 21. A plurality of seats 12 are provided on the frame 2, and the plurality of seats 12 correspond to the plurality of plates 22 one by one, and a first elastic member is connected between the seat 12 and the corresponding plate 22 in the vertical direction for easy reset. The seat 12 and the first elastic member as a whole can slide along the length direction on the plate 22, and the first rack 21 is slidably arranged on the seat 12 at the corresponding position along the length direction. It is arranged to slide in the length direction, and each seat body 12 is rotatably connected to the roller body 11 at the corresponding position. A locking mechanism 6 is provided at both ends of the length direction of the plate body 22. The locking mechanism 6 includes a top block 60 provided on the proximal end of the first rack 21. A locking rod 61 is slidingly provided on the end of the plate body 22. A second elastic member is connected between the locking rod 61 and the plate body 22 in the sliding direction. A locking groove 62 that cooperates with the locking rod 61 is provided on the end of the plate body 22. The lifting rope 3 passes through the locking groove 62 in a direction perpendicular to the sliding direction of the locking rod 61.

[0055] The radial size of the roller body 11 can be changed, that is, a plurality of radial grooves 110 are opened circumferentially on the axial end face of the first gear 20, and the roller body 11 includes a plurality of roller pieces 111, and a roller piece 111 is radially slidably connected in each radial groove 110, and the rotating shaft 112 of the roller body 11 is rotatably connected to the first gear 20, and two parts of threads with opposite spiral directions are symmetrically arranged at both ends of the rotating shaft 112, and a moving block 113 is screwed on each part of the thread, and a connecting rod 114 is hinged between the moving block 113 and each roller piece 111. When the gear is restricted from rotating, the rotation of the rotating shaft 112 causes the two parts of the thread to interact with the moving blocks 113 connected to each other, that is, the rotation of the rotating shaft 112 causes the two moving blocks 113 to approach or move away from each other, and the movement of the moving block 113 will drive the roller piece 111 away from the rotating shaft 112 or close to the rotating shaft 112 through the action of the connecting rod 114, so as to realize the radial size change of the roller body 11.

[0056] Specifically, during operation, the workpiece to be plated is first adjusted from a horizontal posture to an inclined posture. For example, if the workpiece to be plated is adjusted to an upper right inclined posture, the output end of the driving source first drives the rotating shaft 112 of the roller body 11 to rotate. Since the gear is not restricted at this time, the rotation of the rotating shaft 112 cannot cause the moving block 113 to interact with the thread, and the radial size of the roller body 11 will not change. The rotation of the rotating shaft 112 drives the roller 111 and the first gear 20 to rotate clockwise together. The first gear 20 drives the first rack 21 to move to the left, and the top block 60 at the right end of the first rack 21 contacts the locking rod 61 at the right end of the plate body 22, and exerts an upward force on the locking rod 61, so that the locking rod 61 squeezes the second elastic member and then inserts into the locking groove 62. The rope 3 passing through the locking groove 62 will be stuck by the locking rod 61 and the locking groove 62 and cannot continue to slide on the plate body 22. The top block 60 at the left end of the first rack 21 will move away from the left end of the plate body 22, and at this time the first rack 21 The first gear 20 continues to rotate, which drives the rack and the plate 22 to move to the left as a whole. A baffle 63 is provided between the rotating wheel 5 on the frame 2 and the corresponding end of the plate 22. The baffle 63 is provided with an extrusion groove 64. When the plate 22 gradually contacts the baffle 63, the top block 60 at the left end of the first rack 21 will first contact the extrusion groove 64, and as the plate 22 continues to move to the left, the extrusion groove 64 squeezes the top block 60 at the left end of the first rack 21. After the top block 60 is squeezed, it moves downward in the vertical direction, and the first rack 21 drives the seat body 12 to move downward and squeeze the first elastic member. The downward movement of the first rack 21 will drive the top block 60 at its right end to gradually withdraw the upper operation of the locking rod 61 at the right end of the plate body 22. The locking rod 61 is gradually disengaged from the locking groove 62 under the action of the rebound force of the second elastic member, and the hanging rope 3 at the right end of the plate body 22 is no longer restricted. At this time, the two hanging ropes 3 slidingly connected to the same plate body 22 are not restricted.

[0057] During the process of the plate body 22 gradually contacting the baffle 63, due to the movement of the plate body 22, the locked hanging rope 3 will follow the movement of the plate body 22 and pull the right end of the workpiece to be plated upward. The unlocked hanging rope 3 will not produce an upward pulling effect on the left end of the workpiece to be plated, so the left end of the workpiece to be plated moves downward, causing the workpiece to be plated to be tilted to the upper right.

[0058] After that, the driving source continues to drive the rotating shaft 112 to rotate clockwise. Since the first rack 21 can no longer move to the left, the first gear 20 is equivalent to being stuck by the first rack 21. In this way, the rotation of the rotating shaft 112 drives the thread to rotate, and the thread interacts with the moving block 113 connected thereto, so that the two moving blocks 113 move away from each other. The moving block 113 pulls the roller 111 gradually close to the rotating shaft 112 through the connecting rod 114, and the radial size of the roller body 11 is reduced. The cable 10 wrapped around the roller body 11 will be partially pulled away from the roller body 11 under the action of the gravity of the workpiece to be plated, that is, the workpiece to be plated can gradually enter the plating solution. After the workpiece to be plated has completely entered the plating solution, the driving source drives the rotating shaft 112 to rotate counterclockwise, and the counterclockwise rotation of the first gear 20 is not affected. When the first rack 21 is restricted, the first rack 21 will drive the top block 60 at the left end thereof to disengage from the extrusion groove 64 at the left end of the plate body 22. After the top block 60 disengages from the extrusion groove 64, the seat body 12 moves upward under the action of the rebound force of the first elastic member, and the first gear 20 continues to rotate. The first rack 21 continues to move to the right, and the top block 60 at the left end of the first rack 21 will squeeze the locking rod 61 at the left end of the plate body 22 to move upward. The locking rod 61 is plugged into the locking groove 62 at the left end of the plate body 22 to lock the hanging rope 3 there. The top block 60 at the right end of the first rack 21 is away from the right end of the plate body 22. Then the first rack 21 is restricted from moving to the right when the plate body 22 is moved, and the first gear 20 continues to rotate, and it will drive the first rack 21 through the first rack 21. As the plate 22 moves to the right as a whole, the locked hanging rope 3 moves with the plate 22, and the left end of the plated piece is pulled upward. The hanging rope 3 that is not locked does not produce an upward pulling effect on the right end of the plated piece, and the right end of the plated piece moves downward under the action of its gravity, that is, the plated piece is converted from a right upper tilted posture to a left upper tilted posture. When the plate 22 contacts the baffle 63 on the right side of the frame 2, the top block 60 at the right end of the first rack 21 enters the extrusion groove 64, and the extrusion groove 64 squeezes the top block 60 to move downward, so that the first rack 21 drives the seat 12 to move downward as a whole. The first elastic member is squeezed again, and the downward movement of the top block 60 eliminates the upward pushing effect of the locking rod 61 on the left end of the plate 22. Under the rebound force of the second elastic member, the locking rod 61 disengages from the locking groove 62. The rope 3 at the left end of the plate 22 is no longer locked. At this time, both ropes 3 are not locked, and the driving source continues to drive the rotating shaft 112 to rotate counterclockwise. The first rack 21 can no longer move to the right, and the counterclockwise rotation of the first gear 20 is stuck. The rotating shaft 112 rotates the thread thereon to interact with the moving block 113, and the two moving blocks 113 approach each other and push the roller 111 away from the rotating shaft 112 through the connecting rod 114, so the radial size of the roller body 11 becomes larger. When the radial size of the roller body 11 is small, the length required for the cable 10 to be wound thereon for a certain number of turns is not as long as the length required for the cable 10 to be wound thereon for the same number of turns when the radial size of the roller body 11 becomes larger. Therefore, it can play the role of winding the cable 10 to drive the plated parts out of the plating solution.

[0059] The above is a process in which the plate 22 connected to the first rack 21 drives the workpiece to be plated to be hot-dip galvanized. Since the number of workpieces to be hot-dip galvanized each time is large, the remaining plate 22 also needs to drive the other workpieces to be plated to be hot-dip galvanized in the same way. In this embodiment, the first rack 21 is also provided on the remaining plate 22, and the first gear 20 is also provided on the remaining roller body 11, but the middle part of the first rack 21 on the remaining plate 22 has no teeth, and power is transmitted between adjacent first racks 21 through a swing rod 42, that is, the first rack 21 on the remaining plate 22 is moved by the first rack 21 corresponding to the driving source through the swing rod 42, and the remaining teeth of the first rack 21 are used to clamp the first gear 20 on the remaining roller body 11 so that the radial size of the remaining roller body 11 can change.

[0060] In summary, when the workpiece to be plated is initially hoisted, if the length of the lifting rope 3 is longer, the swing amplitude of the workpiece to be plated will be greater after being subjected to the same force, and the mutual friction between adjacent workpieces to be plated will be stronger. In this embodiment, in the initial state, the radial dimension of the roller body 11 can be adjusted to make the length of the lifting cable 10 longer. Then, the shorter the length of the lifting rope 3 extending out of the frame body 2, the smaller the swing amplitude of the workpiece to be plated will be when hoisting the workpiece to be plated, so as to reduce the friction between two workpieces to be plated in adjacent positions.

[0061] Preferably, during the expansion stroke of the remaining plates 22 along the width direction, the roller 11 moves along the width direction following the corresponding plate 22, and the two adjacent rollers 11 are connected by an axis that can be telescoped along the axial direction; specifically, in the aforementioned, only the plate 22 corresponding to the driving source moves along its own length direction, and the remaining plates 22 gradually expand along their respective width directions, that is, the distance between adjacent plates 22 becomes larger, and then under the action of the rocker rod, the two adjacent plates 22 are staggered in the length direction. When staggered, the roller 11 moves along the width direction following the plate 22, but the roller 11 needs to remain in a position roughly aligned with the center of the workpiece to be plated. If the roller 11 moves along the length direction following the plate 22, the tilt posture of the workpiece to be plated cannot be adjusted.

[0062] Preferably, when the two rollers 11 at adjacent positions rotate in the same direction, one roller 11 reels one end of the suspension cable 10 and releases the other end, and the other roller 11 releases one end of the suspension cable 10 and reels the other end; specifically, because the two plates 22 at adjacent positions move in opposite directions in the length direction, the reeling and releasing directions of the suspension cable 10 should also be opposite, so that the workpiece to be plated can be adjusted to an inclined posture.

[0063] The above descriptions of certain exemplary embodiments of the present invention are provided by way of illustration only. It is understood that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of the present invention.

Claims

1. An energy-saving rare earth alloy hot-dip galvanizing device, comprising a hoisting mechanism for hoisting a workpiece to be plated into a plating solution, characterized in that: The output end of the hoisting mechanism is provided with a frame, on which are provided a plurality of driving members and a plurality of plates arranged linearly on the frame. Each plate is hoisted with a workpiece to be plated by a set of lifting ropes. Each driving member drives one of the plates to move, and two adjacent plates move in opposite directions through a transmission assembly. The driving member drives one of the plates to move along its own length direction, and the plate drives the adjacent plate to move in the opposite direction through the transmission assembly; The number of the lifting ropes in each group is two, and the two lifting ropes are respectively installed at the two ends of the length direction of the plate body. A rotating wheel is provided on the frame body at the corresponding position at the two ends of each length direction of the plate body. Each lifting rope starts from the end of the plate body to which it is connected and passes through the rotating wheel to lift the workpiece to be plated; when the plate body moves along its own length direction, one end of the workpiece to be plated in the length direction rises and the other end falls; The driving member includes a driving source provided on the frame and a first gear provided at an output end of the driving source, wherein a first rack is provided on one of the plates, and the first gear is meshed with the first rack; The transmission assembly includes a swing rod movably arranged between two adjacent plates, wherein the length direction of the swing rod is not parallel to the length direction of the plates. When the two adjacent plates slide in opposite directions, the two plates move away from each other under the action of the swing rod, and the two running wheels corresponding to each plate move along with the plate in the width direction. The plate body provided with the first rack among the plurality of plates is located at the outermost edge. When the plate body moves along the length direction, the remaining plates are sequentially unfolded along the width direction and are staggered in the length direction. The hoisting mechanism includes a plurality of rollers with hoisting cables wound thereon, and the plurality of rollers correspond to the plurality of plate bodies one-to-one. The radial dimensions of the rollers are reduced so that the two ends of the hoisting cables wound on the rollers are away from the rollers. The hoisting ropes are slidably arranged at the ends of the plate bodies, and each end of the hoisting cables is connected to a hoisting rope at a corresponding position. When the plurality of plate bodies are driven by the hoisting ropes to hoist the workpieces to be plated and the workpieces to be plated at adjacent positions are staggered in the length direction, the hoisting ropes and the plate bodies are fixed by a locking mechanism. When the hoisted workpieces to be plated need to be immersed in the plating solution, the locking mechanism contacts and locks the hoisting ropes and the plate bodies. The first gear is mounted on the roller body end of the plate body connected to the first gear, and the frame body is provided with a plurality of seats, and the plurality of seats correspond to the plurality of plate bodies one by one, and the seat body is connected to the plurality of plate bodies in a vertical direction so as to reset the seat body and the first elastic member as a whole to slide on the plate body along the length direction of the first rack. The first rack is slidably arranged on the seat body at the corresponding position along the length direction, and each seat body is rotatably connected to the roller body at the corresponding position, and a locking mechanism is provided at both ends of the length direction of the plate body; the locking mechanism includes a top block provided on the proximate end of the first rack, a locking rod is slidably arranged on the end of the plate body, and a second elastic member is connected between the plate body in the sliding direction of the locking rod, and a locking groove is provided at the end of the plate body to cooperate with the locking rod, and the lifting rope passes through the locking groove in a direction perpendicular to the sliding direction of the locking rod. A plurality of radial grooves are provided along the circumferential direction on the axial end face of the first gear. The roller body includes a plurality of roller pieces. A roller piece is radially connected to each radial groove for sliding movement. The rotating shaft of the roller body is rotationally connected to the first gear. Two parts of threads with opposite spiral directions are symmetrically provided at both ends of the rotating shaft. A moving block is screwed on each part of the thread. A connecting rod is hinged between the moving block and each roller piece. When the gear is restricted from rotating, the rotation of the rotating shaft causes the two parts of the thread to interact with the moving blocks connected to them.

2. The energy-saving rare earth alloy hot-dip galvanizing device according to claim 1, characterized in that: During the expansion stroke of the remaining plates in the width direction, the rollers follow the corresponding plates in the width direction, and two adjacent rollers are connected by a shaft that can be telescoped along the axial direction.

3. The energy-saving rare earth alloy hot-dip galvanizing device according to claim 1, characterized in that: When the two rollers at adjacent positions rotate in the same direction, one roller reels one end of the hoisting cable and releases the other end, and the other roller releases one end of the hoisting cable and reels the other end.

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