A hot-dip galvanizing automatic loading and unloading device and use method

Abstract

The present invention discloses an automatic loading and unloading device for hot-dip galvanizing and a method for using the device. The device includes a base and a hanger movably connected to the base; the base includes a fixed chassis, a plurality of support rods are longitudinally arranged around the fixed chassis, and a support plate for supporting the hanger is arranged on the upper part of the support rod; a grille is arranged inside the hanger, and a plurality of evenly distributed hanging point hooks are arranged around the hanger. The present invention also discloses a method for automatically loading and unloading the material using the device when the disc-type scaffolding crossbar is hot-dip galvanized: fix the hanger between the support rods, pass the crossbar through the hanger, and use metal wire to pass through the plate pin holes, and then hoist the hanger for pickling and galvanizing. The device of the present invention does not require manual operation, and can realize automatic loading and unloading by setting the equipment parameters; it saves costs and reduces the risks that may be caused by manual operation.

Description

Technical Field

[0001] The invention relates to the technical field of hot-dip galvanizing, and in particular to an automatic loading and unloading device for hot-dip galvanizing and a use method thereof. Background Art

[0002] With the rapid development of my country's infrastructure and real estate industries, the number of construction projects continues to increase, and the market demand for hot-dip galvanized disc-type scaffolding is increasing. Many large construction companies, steel mills, and construction equipment rental companies across the country have begun to deploy disc-type scaffolding processing. As a key process in the production of disc-type scaffolding, the number of hot-dip galvanizing production lines has also increased. Traditional hot-dip galvanizing has frequently encountered labor shortages due to factors such as heavy workload, poor working environment, and high labor intensity. Labor wages have also risen. The average monthly salary of hot-dip galvanizing workers has exceeded 10,000 yuan, and the proportion of labor costs in the total cost of hot-dip galvanizing is also increasing.

[0003] Patent application number 202011147545.7 discloses a side-in and end-out scaffolding hot-dip galvanizing device. However, this method still requires a lot of manual labor for loading and unloading, and the workers are more dangerous to operate. Therefore, in view of the current phenomenon that the hot-dip galvanizing of the crossbars of the disc-type scaffolding requires a lot of manual labor for loading and unloading, the labor intensity is high, and there are many risk factors of bumping and hitting feet, there is an urgent need for a hot-dip galvanizing automatic loading and unloading device and a method of use to solve the above problems, which can save costs and reduce the risks that may be caused by manual operation. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a hot-dip galvanizing automatic loading and unloading device and a method for using the device. The device does not require manual operation and can realize automatic loading and unloading by setting equipment parameters, thereby saving costs and reducing the risks that may be caused by manual operation.

[0005] The present invention is achieved through the following technical solutions:

[0006] A first aspect of the present invention provides an automatic loading and unloading device for hot-dip galvanizing, comprising a base and a hanger movably connected to the base; the base comprises a fixed chassis, a plurality of support rods are longitudinally arranged around the fixed chassis, and a support plate for supporting the hanger is arranged on the upper part of the support rods; a grid is arranged inside the hanger, and a plurality of evenly distributed hanging point hooks are arranged around the hanger.

[0007] Preferably, the fixed chassis is rectangular, the support rods are respectively located at the four corners of the outer periphery of the fixed chassis, and the cross section of the support rod in the horizontal direction is "L" shaped. The support rods can use angle steel to surround the four corners of the fixed chassis.

[0008] Preferably, a plurality of plate grooves are respectively provided on both sides of the support rod, and the support plates are movably connected to the plate grooves.

[0009] Preferably, a corrugated plate that can be raised and lowered is provided on the fixed chassis; the grooves of the corrugated plate correspond to each column / row of the grid. The material of the corrugated plate can be ordinary carbon steel.

[0010] Preferably, the corrugated plate is movably connected to the support rod. The height of the corrugated plate can be adjusted according to the length of the disc-type scaffold crossbar, so that the distance between the fixed chassis and the hanger meets the length of the disc-type scaffold crossbar. The position of the corrugated plate can be lifted by a hydraulic press with a hydraulic support rod. The hydraulic support rod is inserted under the corrugated plate to lift and lower the corrugated plate.

[0011] Preferably, the corrugated plate is a sawtooth corrugated plate. The shape of each groove of the sawtooth corrugated plate is consistent with the shape of the end of the disc-type scaffolding crossbar, which is conducive to the corrugated plate fixing the position of the disc-type scaffolding crossbar.

[0012] Preferably, the hanger includes a pickling hanger and a galvanizing hanger. If one hanger is used for both pickling and galvanizing, zinc will also be plated on the hanger after each galvanizing. When pickling is performed again, the zinc will be washed away, resulting in a waste of zinc and hydrochloric acid and an increase in the cost of galvanizing. The hanger is divided into a pickling hanger and a galvanizing hanger. The pickling hanger is used for pickling and the galvanizing hanger is used for galvanizing to avoid the zinc on the hanger being washed away and causing waste. The material of the pickling hanger can be 316L stainless steel; the material of the galvanizing hanger can be low carbon steel or titanium alloy. The base can also be divided into a loading base, a hanging base and a unloading base according to the actual conditions of loading, changing hangers, unloading, etc. When loading the crossbar of the disc-type scaffold, the loading base is used; when replacing the pickling hanger with a galvanized hanger, the hanging base is used; when unloading the crossbar of the disc-type scaffold, the unloading base is used.

[0013] The second aspect of the present invention provides application of the above device in hot-dip galvanizing.

[0014] A third aspect of the present invention provides a method for automatically loading and unloading a disc-type scaffold crossbar using the above device, comprising the following steps:

[0015] (1) Lift the hanger and place it on the support plate so that the hanger is fixed between the support rods;

[0016] (2) Insert the crossbar of the scaffolding vertically into the grid of the hanger until it reaches the groove of the serrated corrugated plate, so that the pin holes of the crossbars of the same row / column are located on the same straight line; use a metal wire with a diameter smaller than the pin hole diameter to pierce the pin holes at the top of each row / column of the crossbar;

[0017] (3) The hanger is lifted by the hanging point hook so that the disc-type scaffolding crossbar is pickled, washed, assisted plating and galvanized in sequence;

[0018] (4) After galvanizing is completed, hoist the hanger and place it on the support plate so that the hanger is fixed between the support rods. Remove the metal wire in the plate pin hole, lift the galvanized hanger, and let the disc-type scaffolding crossbar slide out of the hanger. The galvanizing is completed.

[0019] Preferably, the method comprises the following steps:

[0020] (1) Lift the pickling hanger and place it on the support plate so that the pickling hanger is fixed between the support rods;

[0021] (2) Insert the crossbar of the disc-shaped scaffolding vertically into the grille of the pickling hanger until it reaches the groove of the serrated corrugated plate; make the plate pin holes of the crossbars of the same column / row of the disc-shaped scaffolding be located on the same straight line, and use flat steel to pierce the plate pin holes at the top of the crossbars of each column / row of the disc-shaped scaffolding;

[0022] (3) The pickling hanger is lifted by the hanging point hook so that the disc-type scaffolding crossbar is pickled, washed and assisted in plating in sequence;

[0023] (4) After the plating is completed, the pickling hanger is hoisted and placed on the support plate, the pickling hanger is fixed on the support plate, and the flat steel in the plate pin hole is removed; the galvanizing hanger is hoisted so that it passes through the disc buckle scaffolding crossbar, and is placed directly above the pickling hanger, and the plate pin hole is penetrated with iron wire;

[0024] (5) Lift the galvanized hanger through the hanging point hook on the galvanized hanger, and send the disc-type scaffolding crossbar to be galvanized; then take out the pickling hanger on the base;

[0025] (6) After galvanizing is completed, hoist the galvanized hanger and place it on the base, remove the wire in the plate pin hole, lift the galvanized hanger, and slide the disc-type scaffolding crossbar out of the galvanized hanger, and the galvanizing is completed.

[0026] The above method can also be used for hot-dip galvanizing loading and unloading of products similar to the disc-type scaffolding.

[0027] The beneficial effects of the present invention are:

[0028] 1. The device of the present invention can realize the fully automatic loading and unloading of the disc-type scaffold crossbar during the galvanizing process without manual operation, thus avoiding the risks that may be caused by manual operation during the galvanizing process and the danger to the operating workers.

[0029] 2. The device of the present invention can avoid the loss of hydrochloric acid and zinc caused by the zinc stripping of the hanger in the traditional hot-dip galvanizing one-time hanging process, saving resources and reducing the emission of waste acid; taking a hot-dip galvanizing production line with an annual output of 100,000 tons as a reference, the investment cost of the device can be recovered within 4 months, and the relevant costs can be saved by more than 5 million yuan each year. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the device of the present invention;

[0031] Figure 2 It is a structural schematic diagram of the plate slot and the support plate;

[0032] Figure 3 It is a schematic diagram of the structure of the fixed chassis and the corrugated plate when the corrugated plate is lifted;

[0033] Figure 4 It is a schematic diagram of the structure of the pickling rack / galvanizing rack;

[0034] Figure 5 Figure a is a schematic diagram of placing the pickling hanger, b is a schematic diagram of hoisting the disc-type scaffolding crossbar for pickling, c is a schematic diagram of replacing the galvanizing hanger with the pickling hanger, d is a schematic diagram of hoisting the disc-type scaffolding crossbar for galvanizing, and e is a schematic diagram of hoisting the galvanizing hanger after galvanizing is completed;

[0035] Among them, 1. base, 2. hanger, 3. fixed chassis, 4. support rod, 5. support plate, 6. grille, 7. hanging point hook, 8. hydraulic press; 9. plate trough, 10. corrugated plate, 11. pickling hanger, 12. galvanized hanger, 13. disc-type scaffolding crossbar, 14. plate pin hole, 15. flat steel, 16. wire, 17. hydraulic support rod. DETAILED DESCRIPTION

[0036] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0037] As described in the background technology, the hot-dip galvanizing of the crossbars of the disc-type scaffolding currently has the problems of requiring a large amount of manpower for loading and unloading, high labor intensity, and many risk factors of bumping and hitting feet.

[0038] Based on this, the present invention provides a hot dip galvanizing automatic loading and unloading device, such as Figures 1 to 4 As shown, it includes a base 1 and a hanger 2 movably connected to the base 1; the base 1 includes a fixed chassis 3, a plurality of support rods 4 are longitudinally arranged around the fixed chassis 3, and a support plate 5 for supporting the hanger 2 is arranged on the upper part of the support rods 4; a grille 6 is arranged inside the hanger 2, and a plurality of evenly distributed hanging point hooks 7 are arranged around the hanger 2.

[0039] The fixed chassis 3 is rectangular, and the support rods 4 are respectively located at the four corners of the outer periphery of the fixed chassis 3. The cross section of the support rods 4 in the horizontal direction is "L"-shaped. A plurality of plate grooves 9 are respectively provided on both sides of the support rods 4, and the support plates 5 are movably connected to the plate grooves 9. A rise-and-fall corrugated plate 10 is provided on the fixed chassis 3; the grooves of the corrugated plate 10 correspond to each column / row of the grid 6. The corrugated plate 10 is movably connected to the support rods 4. The corrugated plate 10 is a sawtooth corrugated plate 10. The hanger 2 includes a pickling hanger 11 and a galvanizing hanger 12.

[0040] In order to enable those skilled in the art to more clearly understand the technical solution of the present application, the technical solution of the present application will be described in detail below in conjunction with specific examples. If the specific experimental conditions are not specified in the examples, they are usually in accordance with conventional conditions or the conditions recommended by the reagent company; the reagents, consumables, etc. used in the following examples, unless otherwise specified, can be obtained through commercial channels.

[0041] Example 1

[0042] like Figure 3 and 5 As shown, according to the length of the disc-type scaffolding crossbar 13, the hydraulic press 8 is placed around the base 1, and the position of the corrugated plate 10 is adjusted and supported by the lifting and lowering of the hydraulic support rod 17. During the production process, the pickling hanger 11 is first fixed between the support rods 4 of the base 1, and the robot arm inserts the disc-type scaffolding cross bar 13 welded on the conveyor belt into the pickling hanger 11. After the pickling hanger 11 is fully inserted, the flat steel 15 is inserted into the plate pin holes 14 at the top of the disc-type scaffolding cross bar 13, and the full pickling hanger 11 is transferred to the transfer vehicle by a crane, and then transferred to the pickling hanging beam by the transfer vehicle. The full pickling hanger 11 is suspended by the hanging beam for pickling, water washing, and plating-assisted operations. After the plating-assisted operation is completed, the pickling hanger 11 is hoisted back to the base 1 and placed on the support plate 5, the flat steel 15 is pulled out, and the pickling hanger 11 is replaced with a non-stick zinc galvanizing hanger 12, and the plate pin holes 14 are then penetrated with iron wires 16. The pickling hanger 11 is sent to the loading area for recycling. The full galvanized hanger 12 is lifted by the galvanizing crane for galvanizing, cooling, passivation, and then hoisted and placed on the support plate 5 of the base 1. The iron wire 16 can be pulled out. The unloaded galvanized hanger 12 is transported to the replacement hanger for recycling.

[0043] Example 2

[0044] like Figure 5 As shown:

[0045] (1) The robot arm lifts the pickling rack 11 and places it on the support plate 5 so that the pickling rack 11 is fixed between the support rods 4.

[0046] (2) The robot arm vertically inserts the welded disc-type scaffolding cross bar 13 located on the conveyor chain into the grille 6 of the pickling hanger 11, so that the bottom of the disc-type scaffolding cross bar 13 contacts the groove of the serrated corrugated plate 10; the plate pin holes 14 of the disc-type scaffolding cross bars 13 in the same row are located on the same straight line, and the flat steel 15 is inserted into the plate pin holes 14 at the top of the disc-type scaffolding cross bars 13 in row.

[0047] (3) Through the hanging point hook 7 on the pickling hanger 11, the full pickling hanger 11 is transferred to the material transfer vehicle by a crane, and then transferred to the pickling hanging beam by the material transfer vehicle. The full pickling hanger 11 is hung by the hanging beam for pickling, water washing and plating.

[0048] (4) After the plating is completed, the pickling rack 11 is hoisted back to the base 1 and placed on the support plate 5, and the flat steel 15 in the plate pin hole 14 is removed; the galvanizing rack 12 is hoisted so that it passes through the disc-type scaffolding cross bar 13 and is placed above the pickling rack 11, and the plate pin holes 14 of each row of disc-type scaffolding cross bars 13 are penetrated with iron wire 16.

[0049] (5) The galvanizing hanger 12 is lifted by the hanging point hook 7 on the galvanizing hanger 12 to galvanize the disc-type scaffolding crossbar 13; then the pickling hanger 11 is taken out from the support plate 5 in the base 1, and the pickling hanger 11 is recycled.

[0050] (6) After the galvanizing is completed, the galvanizing hanger 12 is adjusted back and placed on the support plate 5, the wire 16 in the plate pin hole 14 is removed, the galvanizing hanger 12 is lifted, and the disc-type scaffolding crossbar 13 slides out of the galvanizing hanger 12, and the galvanizing is completed. The galvanizing hanger 12 is recycled.

[0051] In the prior art, the loading and unloading of the disc-type scaffolding crossbar hot-dip galvanizing requires manual operation. Taking the hot-dip galvanizing production line with an annual output of 100,000 tons as a reference, the loading and unloading of hot-dip galvanizing requires about 60 crossbar operators. The production of the device of the present invention requires the investment of 6 sets of machine arms of about 1.8 million, and the investment cost of the device is about 300,000 yuan, totaling 2.1 million yuan. After the device of the present invention is put into use, more than 40 crossbar operators can be saved. According to the wage standard of 10,000 yuan / month in the hot-dip galvanizing industry, the labor cost can be saved by about 400,000 yuan per month after the device is adopted. At the same time, the device of the present invention can avoid the loss of hydrochloric acid and zinc caused by the zinc stripping of the hanger in the traditional hot-dip galvanizing one-time hanging process, and reduce the discharge of waste acid while saving resources. It can save about 200,000 yuan in related expenses per month, and save 600,000 yuan per month in total. The investment cost of the device can be recovered within 4 months, and more than 5 million yuan in related costs can be saved each year.

[0052] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The method of automatically loading and unloading the disc-type scaffolding crossbar using a hot-dip galvanized automatic loading and unloading device is characterized in that: The automatic loading and unloading device for hot-dip galvanizing comprises a base and a hanger movably connected to the base; the base comprises a fixed chassis, a plurality of support rods are longitudinally arranged around the fixed chassis, and a support plate for supporting the hanger is arranged on the upper part of the support rod; a grille is arranged inside the hanger, and a plurality of evenly distributed hanging point hooks are arranged around the hanger; the support rods are respectively located at the four corners of the outer periphery of the fixed chassis, and the cross-section of the support rod in the horizontal direction is L-shaped; a plurality of plate grooves are respectively arranged on both sides of the support rod, and the support plate is movably connected to the plate grooves; a liftable corrugated plate is arranged on the fixed chassis; the grooves of the corrugated plate correspond to each column / row of the grille; the corrugated plate is movably connected to the support rod; the corrugated plate is a serrated corrugated plate; the hanger comprises a pickling hanger and a galvanizing hanger; The method comprises the following steps: (1) The robot arm lifts the pickling rack and places it on the support plate so that the pickling rack 11 is fixed between the support rods; (2) The robot arm vertically inserts the welded disc-type scaffolding crossbar on the conveyor chain into the grille of the pickling hanger, so that the bottom of the disc-type scaffolding crossbar contacts the groove of the serrated corrugated plate; the plate pin holes of the disc-type scaffolding crossbars in the same row are located on the same straight line, and the flat steel is inserted into the plate pin holes at the top of the disc-type scaffolding crossbar in rows; (3) Through the hook on the pickling hanger, the full pickling hanger is transferred to the transfer car by a crane, and then transferred to the pickling hanging beam by the transfer car, and the full pickling hanger is hung by the hanging beam for pickling, water washing and plating; (4) After the plating is completed, the pickling rack is hoisted back to the base 1 and placed on the support plate, and the flat steel in the plate pin hole is removed; the galvanizing rack is hoisted so that it passes through the disc buckle scaffolding cross bar and is placed above the pickling rack, and the plate pin holes of each row of disc buckle scaffolding cross bars are penetrated with iron wire; (5) The galvanizing hanger is lifted by the hanging point hook on the galvanizing hanger to galvanize the disc-type scaffolding crossbar; the pickling hanger is then taken out from the support plate in the base 1, and the pickling hanger is recycled; (6) After galvanizing is completed, the galvanized hanger is adjusted back and placed on the support plate, the wire in the plate pin hole is pulled out, the galvanized hanger is lifted, and the disc-type scaffolding crossbar slides out of the galvanized hanger, and the galvanizing is completed; the galvanized hanger is recycled.

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