Two-span workshop travelling crane rail-aligning galvanizing production line

Abstract

The utility model relates to the technical field of galvanization, in particular to a two-span workshop travelling crane rail-aligning galvanization production line. The utility model provides a two-span workshop travelling crane rail-aligning galvanizing production line which comprises a first workshop and a second workshop, and linear rails parallel to each other are arranged at the tops of the two workshops; the first rail-aligning travelling crane and the second rail-aligning travelling crane respectively run on the upper parts of the linear rails of the two workshops; the electric hoist is arranged on at least one rail travelling crane and is used for hoisting and transferring workpieces; the zinc pot is arranged in the second workshop and is used for carrying out zinc plating operation on the workpieces; the two rail crossing beams are arranged on the upper portions of the adjacent rails of the first workshop and the second workshop at intervals; wherein the electric hoist can be alternately driven by the first pair of rail travelling cranes and the second pair of rail travelling cranes to carry a workpiece to enter the second workshop from the first workshop through the rail passing beam, zinc plating operation is carried out above the zinc pot, and after the carried workpiece is put down, the carried workpiece returns to the first workshop by means of the rail passing beam to repeat the movement process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of galvanizing, in particular to a two-cross-plant travelling crane rail-to-rail galvanizing production line. BACKGROUND

[0002] The outer surface of steel material products needs to be galvanized for protection against corrosion. The existing travelling crane rail-to-rail production line generally occupies three cross-plants for arrangement. If the site is not allowed, this kind of travelling crane rail-to-rail production line cannot be used, which will inevitably reduce the selection types of the investment party and reduce the selectability of this kind of layout form. Therefore, how to improve the selectability of the travelling crane rail-to-rail form to avoid the limitations of this layout form, so as to develop a travelling crane rail-to-rail galvanizing production line that only occupies two cross-plants, is particularly important. CONTENT OF THE UTILITY MODEL

[0003] The problem to be solved by the present application is that the existing travelling crane rail-to-rail production line generally needs to occupy three cross-plants for arrangement, so that when the site size is limited, the galvanizing production line cannot be arranged.

[0004] To solve the above technical problems, the present application provides a two-cross-plant travelling crane rail-to-rail galvanizing production line, which comprises a first plant and a second plant, and linear tracks parallel to each other are arranged on the top of the two plants; a first rail-to-rail travelling crane and a second rail-to-rail travelling crane, the two rail-to-rail travelling cranes are respectively arranged on the upper part of the linear tracks of the two plants; an electric hoist is arranged on at least one rail-to-rail travelling crane for lifting and transferring workpieces; a zinc pot is arranged in the second plant for galvanizing the workpieces; two over-rail beams are arranged on the upper part of the tracks adjacent to the first plant and the second plant; wherein the electric hoist can be driven by the first rail-to-rail travelling crane and the second rail-to-rail travelling crane alternately, carry the workpieces from the first plant through the over-rail beams into the second plant, and perform galvanizing operation above the zinc pot, and then put down the carried workpieces and return to the first plant through the over-rail beams to repeat the above movement process.

[0005] Since the galvanizing production line of the present application is designed with rail-to-rail travelling cranes, electric hoists and over-rail beams, not only the efficient and automatic transfer of workpieces is realized through the transfer mechanism of the rail-to-rail travelling cranes and the electric hoists, but also the galvanizing production line layout of the two plants is realized through the arrangement of the over-rail beams, solving the problem that the existing travelling crane rail-to-rail production line generally needs to occupy three cross-plants for arrangement, so that when the site size is limited, the galvanizing production line cannot be arranged. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 The figure is a production line layout schematic diagram of the embodiment.

[0007] Figure 2 The figure is a side view structure schematic diagram of the embodiment.

[0008] Figure 3 This is a schematic diagram of the structure of an electric hoist entering a zinc pot.

[0009] Figure 4 This is a schematic diagram of the structure of the electric hoist leaving the zinc pot.

[0010] In the diagram: 1. First rail-mounted trolley; 2. Rail-crossing beam; 3. Second rail-mounted trolley; 4. Electric hoist; 5. Moving cover; 6. Fixed cover; 7. Hanging column; A. Feeding pit; B. Pickling tank; C. Washing tank; D. Auxiliary plating tank; E. Discharge pit; F. Zinc pot; G. Cooling tank; H. Passivation tank. Detailed Implementation

[0011] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Example

[0012] This application relates to a crane-rail galvanizing production line in a two-span workshop, such as... Figures 1-4 As shown, the galvanizing production line includes linear tracks, trolleys, and electric hoists 4. The linear tracks are suspended from the ceilings of two workshops (pre-treatment workshop and galvanizing workshop) to guide the trolleys. Two trolleys, the first trolley 1 (located in the pre-treatment workshop) and the second trolley 3 (located in the galvanizing workshop), are arranged above the tracks and can move along their surfaces. Symmetrically spaced below the trolleys are electric hoists 4 that can reciprocate along their surfaces for loading and unloading workpieces. The workshop is arranged with a feeding pit, pickling tank, washing tank, fluxing tank and discharge pit in sequence. In the pretreatment workshop, the workpieces to be treated are carried by an additional overhead crane and electric hoist 4. After the workpieces are pickled, washed and fluxed in sequence, they are poured into the discharge pit. The galvanizing workshop is arranged with a zinc pot, cooling tank and passivation tank in sequence. There are two intermittently arranged connection points on the upper part of the track, namely the galvanizing connection point and the discharge connection point. The connection point is equipped with a rail beam 2 that connects the first pair of rail cranes 1 and the second pair of rail cranes 3, which is used for the electric hoist 4 to transfer between the two workshops.

[0013] When pre-treating, the first rail-mounted vehicle 1 loads the workpieces in the discharge pit with the hanger in the discharge pit position by means of the lower electric hoist 4, when transferring, the first rail-mounted vehicle 1 moves to the galvanizing connection point, at the same time, the second rail-mounted vehicle 3 also moves to the galvanizing connection point, the electric hoist 4 moves to the upper part of the over-rail beam 2 along the first rail-mounted vehicle 1, and then moves to the upper part of the second rail-mounted vehicle 3 through the over-rail beam 2, so as to realize the transfer of the workpieces from the pre-treatment workshop to the galvanizing workshop, when galvanizing, the second rail-mounted vehicle 3 carries the hanger loaded with the workpieces by means of the electric hoist 4, and sequentially passes through the zinc pot, the cooling pool and the passivation pool, so as to complete the galvanizing operation of the workpieces, when discharging, the second rail-mounted vehicle 3 moves to the discharge connection point, and the electric hoist 4 puts down the hanger loaded with the workpieces, then the electric hoist 4 moves to the upper part of the over-rail beam 2, when the first rail-mounted vehicle 1 also moves to the discharge connection point, the electric hoist 4 moves back to the upper part of the first rail-mounted vehicle 1 through the over-rail beam 2, and is ready for the next round of material taking operation, through the transfer mechanism of the rail-mounted vehicle and the electric hoist 4, the rapid and automatic transfer of the workpieces between different processes is realized, and the production efficiency is greatly improved.

[0014] In view of the toxic smoke generated when the workpieces are in contact with the high-temperature zinc liquid in the zinc pot, in order to protect the health of the production personnel and the safety of the production environment, a zinc smoke fixing cover 6 is specially arranged above the zinc pot, the cover body is designed to completely cover the working area above the zinc pot, effectively preventing the zinc smoke from spreading, and the material is selected to be high-temperature resistant and corrosion resistant, so as to ensure good performance during long-term use, one side of the zinc smoke fixing cover 6 is connected with a zinc smoke dust collector through a pipeline, the zinc smoke dust collector adopts high-efficiency filtration technology, can purify the collected zinc smoke, and ensure that the discharged gas meets the national environmental protection standards.

[0015] In the galvanizing process, when the workpieces are immersed in the high-temperature zinc liquid in the zinc pot, the zinc smoke generated will be effectively captured by the zinc smoke fixing cover 6, then the zinc smoke is transported to the zinc smoke dust collector through the connecting pipeline, the filtration system inside the zinc smoke dust collector filters and purifies the zinc smoke, removes harmful substances, and finally discharges clean gas, through the cooperation of the zinc smoke fixing cover 6 and the zinc smoke dust collector, the harm of zinc smoke to the production personnel is effectively avoided, the occupational health of the workers is protected, the emission of harmful smoke is reduced, the air quality in the workshop is improved, a more comfortable and safe working environment is provided for the workers, the use of the zinc smoke dust collector ensures the environmental protection of the galvanizing production process, and makes the production line system more meet the requirements of national and local environmental protection regulations.

[0016] In order to avoid the interference between the zinc smoke fixing cover 6 and the electric hoist and the workpiece hanger below it during the operation process, the structure of the fixing cover 6 is carefully designed. The fixing cover 6 adopts a cuboid structure, which is stable and convenient to arrange, can completely cover the operation area above the zinc pot, and effectively prevents the escape of zinc smoke. On both sides of the short side of the fixing cover 6, horizontally split door bodies are arranged. When the electric hoist needs to drive the workpiece into the zinc pot, the door bodies can be automatically opened by means of electric cylinders to provide sufficient channel space for the workpiece, ensuring smooth operation. On one side of the long side of the fixing cover 6, a folding cloth curtain door that can be vertically lifted is arranged. The folding cloth curtain door adopts a door plate that is first rolled up and then lowered as a whole by means of a hanging rope to provide sufficient space for the electric hoist and the hanger below it to leave the zinc pot. When the zinc pot needs to be maintained or replaced, the folding cloth curtain door can be completely lowered to provide sufficient operation space for the operator. On the top of the fixing cover 6, a channel is provided for the steel wire rope of the electric hoist to pass through the middle line of the length direction. The design of these channels ensures that the electric hoist can smoothly drive the workpiece in and out of the zinc pot. In order to improve the sealing performance of the fixing cover 6, rubber pads or other sealing materials can be arranged at the channel position to effectively prevent the escape of zinc smoke from the channel.

[0017] During the galvanizing operation process, when the electric hoist needs to drive the workpiece into the zinc pot, the short side door body of the fixing cover 6 will automatically open to provide a channel for the workpiece. At the same time, the steel wire rope of the electric hoist will pass through the channel on the top of the fixing cover 6 to enter the upper part of the zinc pot to drive the workpiece for galvanizing operation. Since the channel position is arranged with sealing materials such as rubber pads, it can effectively prevent the escape of zinc smoke from the channel. When the galvanizing operation is completed, the electric hoist will drive the workpiece to leave the zinc pot. At this time, the short side door body of the fixing cover 6 will be closed again to ensure that the zinc smoke is completely collected in the fixing cover 6. The structural design of the fixing cover 6 avoids interference with the electric hoist and the workpiece hanger below it during the operation process, ensuring the smooth progress of the galvanizing operation. By arranging sealing materials in the steel wire rope channel, the sealing performance of the fixing cover 6 is effectively improved, preventing the escape of zinc smoke. The horizontally split door body and the vertically lifted folding cloth curtain door design facilitates the maintenance and replacement operation of the zinc pot, improving the maintainability of the production line.

[0018] In order to further improve the removal effect of zinc smoke, ensure that the zinc smoke in the production environment is more thoroughly collected and treated, the zinc smoke moving cover 5 is arranged outside the rail-mounted vehicle, the zinc smoke moving cover 5 is designed to cover the rail-mounted vehicle and the workpiece hanger below, effectively preventing the escape of zinc smoke during the movement of the vehicle, the moving cover 5 is made of light, high-temperature-resistant and corrosion-resistant material to ensure its stability and durability during use, the two sides of the rail-mounted vehicle extend outward and have a hanging column 7 for supporting the moving cover 5, the design of the hanging column 7 ensures the stable installation of the moving cover 5 and facilitates the disassembly and maintenance of the moving cover 5, the upper part of the moving cover 5 is also provided with a channel for the steel wire rope of the electric hoist 4, the design of the channel ensures that the electric hoist is not hindered by the moving cover 5 when driving the workpiece, in order to further improve the sealing performance of the moving cover 5, rubber pads or other sealing materials can be added to the channel position, effectively preventing the escape of zinc smoke from the channel, one side of the zinc smoke moving cover 5 is connected with a zinc smoke dust collector through a hose, this design enables the zinc smoke collected in the moving cover 5 to be quickly transported to the zinc smoke dust collector for purification treatment, ensuring that the discharged gas meets the national environmental protection standards.

[0019] When the galvanizing operation is completed, the zinc smoke moving cover 5 moves with the rail-mounted vehicle when driving the workpiece, since the channel position is provided with sealing materials, the escape of zinc smoke from the channel is effectively prevented, and the zinc smoke collected in the moving cover 5 is transported to the zinc smoke dust collector for purification treatment.

[0020] The design of the moving cover 5 enables the zinc smoke generated during the movement of the rail-mounted vehicle and the workpiece hanger below to be more thoroughly collected and treated, improving the removal effect of zinc smoke, the steel wire rope channel position of the upper part of the moving cover 5 is provided with sealing materials, effectively preventing the escape of zinc smoke, enhancing the sealing performance of the production environment, and the design of the hanging column 7 supporting the moving cover 5 facilitates the disassembly and maintenance of the moving cover 5, improving the maintainability and flexibility of the production line.

[0021] In use, when the workpiece to be galvanized is prepared, the electric hoist tightly clamps the workpiece through its hook or special clamp, then the electric hoist starts to move along the track towards the zinc pot according to the preset program or the operator's instruction, during the movement, the electric hoist maintains a uniform and stable speed to ensure that the workpiece is not damaged due to shaking or collision, when the workpiece reaches above the zinc pot, the electric hoist accurately controls the descending speed of the workpiece, slowly immersing the workpiece into the zinc liquid, during the galvanizing process, the electric hoist remains stationary, allowing the workpiece to soak in the zinc liquid for sufficient time to achieve the desired galvanizing effect, after the galvanizing is completed, the electric hoist is started again to slowly lift the workpiece from the zinc liquid, then it leaves the zinc pot along the folding curtain door position of the fixed cover 6, and then passes through the cooling pool and the passivation pool, completing the galvanizing operation of the workpiece.

[0022] In the process of driving the workpiece into and out of the zinc pot by the electric hoist, a large amount of zinc smoke will be generated. In order to effectively collect these zinc smokes, the fixed cover 6 and the movable cover 5 are combined to collect the zinc smokes. The fixed cover 6 is installed above the zinc pot, and its structure design can completely cover the working area above the zinc pot. The short sides of the fixed cover 6 are provided with horizontally split doors, and the long side is provided with a vertically lifting folding cloth curtain door. When the electric hoist drives the workpiece into the zinc pot, the door will automatically open to provide a passage for the workpiece. At the same time, the top of the fixed cover 6 is provided with a passage for the steel wire rope of the electric hoist 4 to pass through, and sealing materials such as rubber pads are arranged at the passage position to prevent zinc smoke from escaping from the passage. The movable cover 5 is arranged outside the track-type trolley, covering the trolley and the workpiece hanger below it. The movable cover 5 is supported by the lifting column 7 for convenient disassembly and maintenance. The movable cover 5 is also provided with a passage for the steel wire rope of the electric hoist 4 to pass through, and sealing materials are also arranged to improve the sealing performance. One side of the movable cover 5 is connected with a zinc smoke dust collector through a hose for collecting and processing the zinc smoke collected in the movable cover 5. In the process of driving the workpiece into and out of the zinc pot by the electric hoist, the fixed cover 6 and the movable cover 5 always maintain effective collection of the zinc smoke, forming a complete zinc smoke collection system. When the zinc smoke is collected into the fixed cover 6 or the movable cover 5, it will be transported to the zinc smoke dust collector through the connected pipeline or hose for purification treatment. The zinc smoke dust collector adopts high-efficiency filtration technology to remove harmful substances in the zinc smoke, and finally discharges clean gas.

[0023] In general, terminology can be understood at least in part from an understanding of the context. For example, and as used herein, the terms "a," "an," or "one" can be taken to mean one or more than one, depending on the context. Only terms clearly indicated to the contrary, such as "only one" or "exactly one," can indicate that there is only one of an element. For example, "a" or "an" can be taken to mean one or more than one, depending on the context.

[0024] It should be readily understood that "on," "above," and "over" in the present disclosure are to be interpreted in the broadest context to mean not only "directly on" but also "on with intervening features or layers therebetween," and that "above" or "over" is to be interpreted not only to mean "above" or "over" with no intervening features or layers therebetween (i.e., directly on), but also "above" or "over" with intervening features or layers therebetween.

[0025] In addition, spatially relative terms, such as "beneath", "below", "lower", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0026] Finally, it should be noted that the above-described embodiments are merely intended for describing and illustrating, not limiting, the technical solutions of the present application; even though the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or equivalently replace some or all of the technical features thereof; and such modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A two-bay plant for the production of zinc-coated rails by the strip process, characterized in that: Comprising a first workshop and a second workshop, the top of the two workshops are arranged with linear tracks parallel to each other; a first rail-mounted vehicle (1) and a second rail-mounted vehicle (3), the two rail-mounted vehicles run on the top of the linear tracks of the two workshops respectively; an electric hoist (4) arranged on at least one rail-mounted vehicle, used for lifting and transferring workpieces; a zinc pot arranged in the second workshop, used for galvanizing operation on the workpieces; two over-track beams (2) arranged on the top of the tracks adjacent to the first workshop and the second workshop; wherein the electric hoist (4) can be driven by the first rail-mounted vehicle (1) and the second rail-mounted vehicle (3) alternately, to carry the workpieces from the first workshop through the over-track beams (2) into the second workshop, and perform galvanizing operation above the zinc pot, and then put down the carried workpieces, and then return to the first workshop by means of the over-track beams (2) to repeat the above movement process.

2. A two cross-dock galvanizing line as claimed in claim 1, characterized in that: Further comprising a fixed cover (6) arranged above the zinc pot, used for collecting zinc fume generated in the galvanizing process; a movable cover (5) arranged outside the second rail-mounted vehicle and covering the rail-mounted vehicle, used for collecting zinc fume that may be dispersed in the movement of the rail-mounted vehicle; a zinc fume dust collector connected with the fixed cover (6) and the movable cover (5), used for purifying the collected zinc fume.

3. A two cross-dock galvanizing line as claimed in claim 2, characterized in that: The short sides of the fixed cover (6) are provided with horizontally split doors, so that the electric hoist (4) and the workpieces can enter and exit the zinc pot area, and the long side is provided with a vertically lifting folding cloth curtain door for manual entry and exit for cleaning zinc ash.

4. The two cross-dock galvanizing line of claim 3, wherein: A channel is provided in the middle of the top of the fixed cover (6) for the steel wire rope of the electric hoist to pass through.

5. The two cross-dock galvanizing line of claim 2, wherein: The movable cover (5) is supported by a hoisting column (7) outside the rail-mounted vehicle, and a channel is provided in the upper part of the movable cover (5) for the steel wire rope of the electric hoist (4) to pass through.

6. The two cross-dock galvanizing line of claim 1, wherein: Further comprising a cooling pool and a passivation pool arranged in the second workshop, used for cooling and passivation treatment of the galvanized workpieces.

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