Magnesium smelting vacuum tank cover vehicle

Abstract

The utility model provides a magnesium smelting vacuum tank cover car, which comprises a car frame, and a cover body lifting mechanism, a powder spraying gun clamping mechanism and a walking mechanism which are arranged on the car frame, the car frame comprises a lower-layer frame and a U-shaped frame arranged above the lower-layer frame; the cover body lifting mechanism is arranged in the middle of the lower-layer frame and comprises two groups of cover body connecting pieces which are driven by first hydraulic rods to lift; the powder spraying gun clamping mechanism comprises two second hydraulic rods which are arranged on the U-shaped frame and stretch out oppositely, and arc-shaped clamping plates are arranged at the ends of the second hydraulic rods. The walking mechanism comprises walking wheels arranged at the four corners of the lower portion of the lower layer frame correspondingly. And the powder spraying gun on the cover body penetrates through the middle part of the lower-layer frame. The moving device is of a multi-layer frame structure, the cover body can be stably lifted, the cover body and the powder spraying gun can be stably moved, and stable moving of the vacuum tank cover for magnesium smelting is achieved.

Description

Technical Field

[0001] This utility model relates to the field of metal smelting equipment technology, and more specifically, to a magnesium smelting vacuum tank cover vehicle. Background Technology

[0002] A vacuum tank cover truck is a frame vehicle installed above the cover of a vacuum tank smelting equipment, which can hoist and lift the cover for transport.

[0003] The lid of the vacuum ladle used in magnesium smelting is connected to a powder spraying gun that is over six meters long. The weight of the lid is also much greater than that of lids used in other steelmaking processes, making it extremely difficult to move it elsewhere for maintenance and repair. The existing vacuum ladle lid carts used in steel smelting have a simple structure and cannot support the weight of the magnesium smelting vacuum ladle lid during relocation, nor can they secure the tall powder spraying gun.

[0004] There is an urgent need for a vacuum tank lid vehicle for magnesium smelting. Utility Model Content

[0005] In view of the above problems, the purpose of this utility model is to provide a vacuum tank cover vehicle for magnesium smelting. The vehicle frame has a multi-layer structure, which can stably lift the cover and move the cover and powder spraying gun stably, thus realizing the stable transportation of vacuum tank covers for magnesium smelting.

[0006] This utility model provides a magnesium smelting vacuum tank lid cart, including a frame and a lid lifting mechanism, a powder spray gun clamping mechanism, and a traveling mechanism mounted on the frame.

[0007] The frame includes a square lower frame at the bottom and a U-shaped frame arranged above the lower frame. The U-shaped frame includes two side frames arranged in parallel and a middle frame connected between one end of the two side frames.

[0008] The cover lifting mechanism is located in the middle of the lower frame, and the cover lifting mechanism includes two sets of cover connecting parts that are driven to rise and fall by a first hydraulic rod;

[0009] The powder spray gun clamping mechanism includes two second hydraulic rods that extend opposite each other on the U-shaped frame, and an arc-shaped clamping plate is provided at the end of the second hydraulic rod;

[0010] The walking mechanism includes walking wheels respectively located at the four corners below the lower frame. The walking wheels are driven to rotate by a rotating motor and move on the track.

[0011] The frame is placed above the cover of the vacuum tank. The powder spray gun on the cover passes through the middle of the lower frame. The cover connector is connected to the cover and then lifted. The arc-shaped clamp extends out and fits against the outer wall of the powder spray gun. The walking mechanism moves.

[0012] The lower frame includes a rectangular frame, with wheel mounting brackets provided at both ends of the lower side of the width border of the rectangular frame, and two support frames connected between the two width borders, the two support frames being symmetrical about the center plane of the rectangular frame;

[0013] The support frame includes two rectangular plates connected between the two width borders, and the support frame is used to mount the first hydraulic rod.

[0014] The traveling wheel is connected in the traveling wheel mounting frame, the rotating motor is fixed on the lower side of the lower frame and connected to the traveling wheel through a reducer, a brake is provided on the traveling wheel, and the track is respectively set on the track brackets on both sides of the vacuum tank.

[0015] The fixing cylinder of the first hydraulic rod is fixed to the upper side of the support frame by a bracket and is parallel to the support frame. An upper shaft is fixed to the end of the telescopic rod of the first hydraulic rod. The upper shaft is rotatably connected to the upper end of the rocker arm. The lower end of the rocker arm is rotatably connected to the lower shaft. The lower shaft is fixed between the two rectangular plates. The rocker arm swings in the vertical plane of the lower frame with the lower shaft as the center by the extension and retraction of the first hydraulic rod.

[0016] A central shaft is rotatably connected to the middle of the rocker arm, and a chain connecting plate is fixed on the central shaft. The chain connecting plate is in sliding contact with the rocker arm.

[0017] A first sprocket and a second sprocket are sequentially arranged along the space between the two rectangular plates. The first sprocket is adjacent to the chain connecting plate. A first chain is engaged on the first sprocket, and a second chain is engaged on the second sprocket. The upper end of the second chain is rotatably connected to one end of an extension rod to adjust the chain connecting plate to be horizontal. The other end of the extension rod is rotatably connected to the end of the chain connecting plate that extends out of the rocker arm. The upper end of the first chain is rotatably connected to the chain connecting plate.

[0018] The lower ends of the first chain and the second chain are flush, and the cover connector is connected to the lower ends of the first chain and the second chain respectively.

[0019] The fixing cylinder of the second hydraulic rod is mounted on the side frame by a bracket, and the end of the telescopic rod of the second hydraulic rod is fixed to the middle of the outer wall of the arc-shaped plate.

[0020] The angle of the arc-shaped clamp is less than 180 degrees and greater than 120 degrees, and the inner diameter of the arc-shaped clamp is the same as the outer diameter of the outer wall of the powder spraying gun.

[0021] The lower frame is aligned with the U-shaped frame. The U-shaped frame has two layers. Two guide wheel mounting seats are provided on the outer edge of the side frame of the U-shaped frame adjacent to the lower frame. Lateral guide wheels are installed in the guide wheel mounting seats. Guide wheel slide rails are provided on both sides of the vacuum tank through brackets. The guide wheel slide rails correspond vertically to the track.

[0022] The upper U-shaped frame of the two layers is aligned with the outer platform of the powder spraying gun.

[0023] Both the side frame and the middle frame include a rectangular outer frame and reinforcing rods evenly connected to the outer frame.

[0024] Railings are provided around both the lower frame and the U-shaped frame.

[0025] As described above, this utility model provides a vacuum tank cover cart for magnesium smelting, comprising a multi-layered frame and a cover lifting mechanism, a powder spraying gun clamping mechanism, and a traveling mechanism mounted on the frame. The frame includes a lower frame and an upper U-shaped frame, which can stably lift and move the cover and powder spraying gun. The powder spraying gun can be removed from the frame through the opening end of the U-shaped frame, facilitating its removal and maintenance. This utility model integrates multiple functions such as cover loading, transportation, and maintenance, achieving stable transportation of vacuum tank covers for magnesium smelting and improving the efficiency of magnesium smelting operations. Attached Figure Description

[0026] Other objects and results of this invention will become more apparent and readily understood upon referring to the following description taken in conjunction with the accompanying drawings, and with a more complete understanding of the invention. In the drawings:

[0027] Figure 1 This is a schematic diagram of the structure of a magnesium smelting vacuum tank cover vehicle according to an embodiment of the present utility model;

[0028] Figure 2 This is a schematic diagram of the structure of the magnesium smelting vacuum tank cover car located above the vacuum tank according to an embodiment of the present utility model;

[0029] Figure 3 This is a schematic diagram of the lower frame according to an embodiment of the present utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the U-shaped frame according to an embodiment of the present utility model;

[0031] Figure 5 This is a schematic diagram of the powder spray gun clamping mechanism according to an embodiment of the present utility model;

[0032] Figure 6 This is a schematic diagram of the cover lifting mechanism according to an embodiment of the present utility model;

[0033] Figure 7 This is a top view of the cover lifting mechanism according to an embodiment of the present utility model;

[0034] Among them, 1-frame, 11-lower frame, 111-rectangular frame, 112-wheel mounting bracket, 113-support frame, 12-U-shaped frame, 121-side flat frame, 122-middle flat frame;

[0035] 2-Cover lifting mechanism, 21-First hydraulic rod, 22-Cover connector, 23-Upper shaft, 24-Rocker arm, 25-Lower shaft, 26-Central shaft, 27-Rotating disc, 28-Connecting plate, 29-Chain fixing plate, 210-First sprocket, 211-Second sprocket, 212-First chain, 213-Second chain, 214-Extension rod;

[0036] 3-Powder spray gun clamping mechanism, 31-Second hydraulic rod, 32-Arc-shaped clamping plate;

[0037] 4-Traveling mechanism, 41-Traveling wheel, 42-Rotating motor, 43-Reducer, 44-Railway, 45-Guide wheel, 46-Guide wheel slide rail;

[0038] 5- Railing;

[0039] 6-Vacuum container;

[0040] 7-Cap;

[0041] 8-Powder spray gun;

[0042] In all the accompanying drawings, the same reference numerals indicate similar or corresponding features or functions. Detailed Implementation

[0043] This invention can be modified in various ways and has various embodiments, with specific embodiments illustrated in the accompanying drawings. However, this invention is not limited to this specific implementation and all modifications, equivalents, and substitutions falling within the spirit and technical scope of this invention are to be understood as included.

[0044] Ordinal terms such as "first," "second," etc., may be used to describe various constituent elements, but the constituent elements are not limited to these terms. The terms are used only to distinguish one constituent element from another. For example, without departing from the scope of the claims of this utility model, a second constituent element may be named a first constituent element, and similarly, a first constituent element may be named a second constituent element. Terms and / or include combinations of multiple associated items or one of multiple associated items.

[0045] It should be understood that when referring to a constituent element being "connected" or "in contact" with other constituent elements, this includes not only cases where it is directly connected or in contact with other constituent elements, but also cases where other constituent elements exist between them. Conversely, when referring to a constituent element being "directly connected" or "directly in contact" with other constituent elements, it should be understood that no other constituent elements exist between them.

[0046] In the description of the embodiments, when it is stated that a certain component is formed "on or under" other components, "on or under" includes both two components that are in direct contact with each other and at least one other component that is configured to be formed between the two components. Furthermore, when expressed as "on or under", based on a certain component, it refers not only to the upper direction but may also include the lower direction.

[0047] The terminology used in this application is for illustrative purposes only and is not intended to limit the scope of the invention. Unless the context clearly specifies otherwise, singular expressions include plural expressions. In this application, terms such as "comprising" or "having" are used to specify the presence of features, numbers, steps, operations, constituent elements, components, or combinations thereof described in the specification, and do not preclude the presence or additional possibilities of one or more other features, numbers, steps, operations, constituent elements, components, or combinations thereof.

[0048] Unless otherwise defined, including technical or scientific terms, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. Terms as defined in commonly used dictionaries should be interpreted in a meaning consistent with their meaning in the context of the relevant art, and should not be construed as having an ideal or overly formal meaning unless explicitly defined in this application.

[0049] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0050] like Figures 1-7 As shown in the figure, the magnesium smelting vacuum tank cover vehicle proposed in this embodiment can be used for the installation and relocation of vacuum tank covers for magnesium smelting furnaces, and can also be used for the installation and relocation of other tank covers.

[0051] The blown powder injection magnesium smelting equipment is a new type of liquid blown powder injection magnesium smelting equipment developed through optimized design and recombination based on the characteristics of VOD / VD molten steel vacuum refining equipment, ladle powder injection equipment, vacuum medium-frequency furnace smelting equipment, and magnesium alloys themselves. It includes a vacuum tank (with the vacuum medium-frequency furnace housed within), vacuum powder injection lances, and auxiliary equipment. The powder injection lance is connected to the vacuum tank cover by a single bolt. The powder injection lance is vertical, reaching a height of over 6 meters. The vacuum tank cover cart used in this magnesium smelting process allows for stable installation, disassembly, and transportation of the cover and powder injection lance.

[0052] This magnesium smelting vacuum tank cover vehicle includes a frame 1 and a cover lifting mechanism 2, a powder spraying gun clamping mechanism 3, and a traveling mechanism 4 mounted on the frame 1. The frame 1 is used to support the weight of each mechanism and the cover 7. The cover lifting mechanism 2 is used to lift and lower the cover 7 from the top of the vacuum tank 6. The powder spraying gun clamping mechanism 3 is used to help maintain the vertical stability of the powder spraying gun 8 during transportation. The traveling mechanism 4 is used for the movement of the frame 1.

[0053] For the load-bearing capacity of the frame 1, the frame 1 comprises at least three layers, each made of structural steel, with structural steel connecting and supporting the layers to meet the requirements for lifting rigidity and strength. The frame 1 may include a square lower frame 11 at the bottom, and at least two U-shaped frames 12 arranged sequentially above the lower frame 11. The U-shaped frame 12 includes two side frames 121 arranged in parallel and a middle frame 122 connecting one end of the two side frames 121.

[0054] The lower frame 11 serves as the chassis of the vehicle frame 1, requiring stability, sturdiness, and pressure resistance. The lower frame 11 also secures the cover lifting mechanism 2 and the traveling mechanism 4. When the vehicle frame 1 is positioned above the vacuum tank 6, the cover 7 is located at the lower center of the lower frame 11. Several layers of U-shaped frames 12 are connected to the upper part of the lower frame 11. The space in the middle of the U-shaped frames 12 can accommodate the powder spraying gun 8 passing through the lower frame 11, facilitating the subsequent detachment of the powder spraying gun 8 from the opening side of the U-shaped frame 12 from the vehicle frame 1.

[0055] To facilitate lifting and lowering the cover 7, the cover lifting mechanism 2 is located in the middle of the lower frame 11. The cover lifting mechanism 2 includes two sets of cover connecting parts 22 that are driven to rise and fall by the first hydraulic rod 21.

[0056] The two sets of cover connectors 22 each have four connection points, which correspond one-to-one with the lifting points on the cover 7, allowing for a smooth connection to the cover 7. Each set of connectors is raised or lowered via the lifting of the first hydraulic rod 21, which in turn raises or lowers the cover 7. The first hydraulic rods 21 of both sets operate synchronously. The lifting stroke of the cover 7 is sufficient to allow it to smoothly leave the vacuum tank 6.

[0057] To ensure the vertical stability of the powder spraying gun 8 during transportation, the powder spraying gun clamping mechanism 3 includes two opposing second hydraulic rods 31 mounted on the U-shaped frame 12, with an arc-shaped clamping plate 32 at the end of each second hydraulic rod 31.

[0058] The two arc-shaped clamping plates 32 have the same radius. After the two second hydraulic rods 31 extend, the two arc-shaped clamping plates 32 are horizontally aligned and can be reliably attached to both sides of the outer wall of the powder spraying gun 8, supporting the powder spraying gun 8 so that it does not sway from side to side. No force is required for clamping; it is sufficient to stick them to the outer wall of the powder spraying gun 8.

[0059] The powder spray gun clamping mechanism 3 can be set on each U-shaped frame 12, or it can be set only on the U-shaped frame 12 above the lower frame 11.

[0060] To ensure stable movement, the walking mechanism 4 includes four walking wheels 41 located at the four corners below the lower frame 11. The walking wheels 41 are driven to rotate by a rotating motor 42 and move on the track 44.

[0061] Two steel rails are installed on the travel path of the frame 1, and four traveling wheels 41 move on the two steel rails, ensuring safety and stability. Each traveling wheel 41 is driven by a rotating motor 42, making it easy and flexible to start or stop.

[0062] The magnesium smelting vacuum tank cover car is generally parked directly above the cover 7 of the vacuum tank 6. The powder spraying gun 8 on the cover 7 passes through the middle of the lower frame 11, and the powder spraying gun 8 is located in the middle space of the U-shaped frame 12.

[0063] Because the chassis 1 has a large placement space, auxiliary equipment such as powder spraying tanks, argon gas tanks, and hydraulic stations that serve hydraulic rods can be fixed in suitable positions using brackets.

[0064] When relocation is required, the cover connector 22 connects to the cover 7, the two first hydraulic rods 21 are activated to lift the cover 7, and the two second hydraulic rods 31 are activated to push out the arc-shaped clamping plate 32 to fit against the outer wall of the powder spraying gun 8. The extension length of each second hydraulic rod 31 can be determined according to the distance from the powder spraying gun 8. Each rotating motor 42 is activated, and the traveling wheels 41 travel on the track 44. After relocation to the correct position, travel stops, and the upper end of the powder spraying gun 8 is lifted by hoisting equipment. After increasing the hoisting force, the connection between the powder spraying gun 8 and the cover 7 can be loosened, and the connection between the cover 7 and the cover connector 22 can be loosened. The cover 7 can then be transported away for maintenance using transport equipment.

[0065] If the powder spraying gun 8 needs to be moved for maintenance, retract the two second hydraulic rods 31, the arc-shaped clamping plate 32 leaves the powder spraying gun 8, the hoisting equipment appropriately lifts the powder spraying gun 8, and the powder spraying gun 8 is moved away for maintenance through the opening of the U-shaped frame 12, making it easy to move out.

[0066] If only the powder spraying gun 8 needs to be inspected, the two second hydraulic rods 31 can be left unretracted, and the arc-shaped clamping plate 32 can still hold the powder spraying gun 8. Ladders are set between each layer, and personnel climb up the U-shaped frame 12 by ladders. Ladders are set up between the U-shaped frame 12 and the platform on the outer wall of the powder spraying gun 8 to enter the platform on the outer wall of the powder spraying gun 8 and inspect and maintain the powder spraying gun 8 on the platform.

[0067] In one specific embodiment of this utility model, for the stability of the lower frame 11, the lower frame 11 may include a rectangular frame 111 welded from H-beams. Wheel mounting brackets 112 are respectively provided at both ends of the lower side of the width borders of the rectangular frame 111. Two support frames 113 are connected between the two width borders, and the center planes of the two support frames 113 are symmetrical about the width direction of the rectangular frame 111. Each support frame 113 includes two rectangular plates connected between the two width borders. The rectangular plates are on a vertical plane, and the support frame 113 is used to install the first hydraulic rod 21 and the cover connector 22. The rectangular plates are steel plates.

[0068] The area of ​​the rectangular frame 111 is larger than the area of ​​the cover. The wheel mounting bracket 112 is located outside the cover 7 for easy movement. The wheel mounting bracket 112 may include two connecting plates, and the axle of the wheel 41 is mounted between the two connecting plates.

[0069] Two support frames 113 are located at the center of the rectangular frame 111 along its width. These two support frames 113 are used to install two sets of cover connectors 22. The spacing between the two support frames 113 should be similar to the spacing between the two rows of cover lifting holes. The width of the rectangular plate of the support frame 113 can be similar to the width of the frame edge of the rectangular frame 111. Reinforcing plates can be connected at appropriate positions between the two rectangular plates. Several reinforcing rods can be added between the support frame 113 and the adjacent frame edge along its length, and also between the two support frames 113, to increase the stability of the lower frame 11.

[0070] In a specific embodiment of this utility model, in order to ensure stable walking, the walking wheel 41 is connected in the walking wheel mounting frame 112, the rotating motor 42 is fixed on the lower side of the lower frame 11 and connected to the walking wheel 41 through the reducer 43, a brake is provided on the walking wheel 41, and the track 44 is respectively set on the track support on both sides of the vacuum tank 6.

[0071] The axle of the walking wheel 41 passes through the walking wheel mounting bracket 112. The rotating motor 42 and the reducer 43 are fixed on the lower side of the lower frame 11 near the walking wheel mounting bracket 112. The axle of the rotating motor 42 is connected to the reducer 43. The axle of the walking wheel 41 passes through the connecting plate of the walking wheel mounting bracket 112 and is connected to the reducer 43. The walking wheel 41 runs stably and flexibly.

[0072] The brake can hold the traveling wheel 41 tightly, preventing it from sliding when the machine is stopped. The track support and track 44 can be extended from the vacuum tank 6 to the required position to assist the operation of the traveling wheel 41.

[0073] In one specific embodiment of this utility model, in order to smoothly lift and lower the cover 7, the two sets of cover connecting parts 22 are symmetrical and move synchronously.

[0074] The fixed cylinder of the first hydraulic rod 21 in each group is fixed to the upper side of a support frame 113 by a bracket and is parallel to the support frame 113. The bracket can be installed at a suitable position on the upper part of the two rectangular plates of the support frame 113, and the bracket can support the rear end of the fixed cylinder.

[0075] In order to facilitate the lifting and lowering of the cover connector 22, an upper shaft 23 is fixed at the end of the telescopic rod of the first hydraulic rod 21. The upper shaft 23 is perpendicular to the telescopic rod and perpendicular to the vertical plane where the rectangular plate is located. Both ends of the upper shaft 23 extend out of the telescopic rod.

[0076] The two ends of the upper shaft 23 are rotatably connected to the upper end of the rocker arm 24. The rocker arm 24 includes two steel plates that are wider in the middle and gradually narrower at both ends, with arc-shaped ends. The middle and both ends of the rocker arm 24 have through holes. The lower ends of the rocker arm 24 are rotatably connected to the lower shaft 25. After the rocker arm 24 rotates between the two rectangular plates, the two ends of the lower shaft 25 are fixed to the two rectangular plates respectively. The rocker arm 24 swings in the vertical plane of the lower frame 11 with the lower shaft 25 as the center through the extension and retraction of the first hydraulic rod 21.

[0077] The upper end of the rocker arm 24 is rotatably connected to the telescopic rod, and the lower end is rotatably connected to two rectangular plates. The upper end of the telescopic rocker arm 24 swings left and right inside the support frame 113 through the telescopic rod. The angle of left and right swing is determined according to the specific situation of the lifting of the cover 7, thereby determining the position of the lower shaft 25 on the two rectangular plates.

[0078] To effectively lift the cover 7, a chain is used for the lifting rope. A central shaft 26 is rotatably connected between the middle sections of the rocker arms 24. A chain connecting plate is fixed on the central shaft 26. The chain connecting plate includes a rotating disc 27, a connecting plate 28, and a chain fixing plate 29. The rotating disc 27 slides in contact with the inner sides of the rocker arms 24 on both sides. The connecting plate 28 is connected to the outer wall of the rotating disc 27. The connecting plate 28 can be a steel plate with a thickness slightly less than that of the rotating disc 27, and its length can extend beyond the rocker arms 24. A chain fixing plate 29 is connected to the end of the connecting plate 28 that extends beyond the rocker arms 24. The chain fixing plate 29 is connected to two chains, and the two chains are respectively connected to two cover connecting parts 22 in a set.

[0079] To ensure the two cover connectors 22 remain flush, a first sprocket 210 and a second sprocket 211 are connected between the two rectangular plates. The first sprocket 210 is adjacent to the chain connecting plate. The horizontal distance between the central axes of the first sprocket 210 and the second sprocket 211 is approximately the same as the distance between the lifting holes on the cover 7, ensuring that the distance between the two cover connectors 22 matches the distance between the lifting holes on the cover 7. A first chain 212 meshes with the first sprocket 210, and a second chain 213 meshes with the second sprocket 211. The second sprocket 211 is higher than the first sprocket 210, ensuring that the first chain 212 and the second chain 213 remain parallel to each other and do not interfere with each other after being connected to the chain connecting plate.

[0080] For stable engagement, both chains remain horizontal between the chain connecting plate and the sprocket. The chain connecting plate rotates to a horizontal position to connect with the two chains. The upper end of the second chain 213 is rotatably connected to one end of the extension rod 214. After adjusting the chain connecting plate to be horizontal, the other end of the extension rod 214 is rotatably connected to the chain connecting plate, making the extension rod 214 horizontal. The upper end of the first chain 212 is then rotatably connected to the chain connecting plate. Both ends of the two chains can be rotatably connected to plates, which are then rotatably connected to corresponding components.

[0081] Each connection point is a rotatable connection. When the telescopic rod moves, the portions of the first chain 212 and the second chain 213 in the support frame 113 can always be horizontal, the chain connecting plate can always be vertical, and the lower ends of the first chain 212 and the second chain 213 can always be flush, ensuring stable hoisting.

[0082] The cover connector 22 is connected to the lower end of the first chain 212 and the second chain 213 respectively. The cover connector 22 is determined according to the form of the cover lifting hole, which is a bolt in this embodiment. The upper part of the bolt is rotatably connected to the plate of the chain through the connecting frame. The nut of the bolt is located above the bottom of the connecting frame, and the bolt shank passes through the hole at the bottom of the connecting frame so as to be screwed into the threaded lifting hole on the cover 7.

[0083] The first hydraulic rods 21 of the two sets are synchronously controlled, causing the chains in the two sets to rise and fall synchronously, thus lifting the lower cover 7 in a balanced manner. For strict synchronous control, a synchronous connecting rod is connected between the lower ends of the two rocker arms 24 to ensure that the two rocker arms 24 move synchronously.

[0084] In a specific embodiment of this utility model, in order to stably clamp the powder spraying gun 8, the fixing cylinder of the second hydraulic rod 31 is mounted on the side flat frame 121 by a bracket, and the end of the telescopic rod of the second hydraulic rod 31 is fixed to the middle of the outer wall of the arc-shaped clamping plate 32.

[0085] Second hydraulic rods 31 are respectively installed on the two side frames 121 at positions directly opposite the sides of the powder spraying gun 8. The extension of the second hydraulic rods 31 causes the arc-shaped clamping plates 32 to move forward toward the powder spraying gun 8, and the two arc-shaped clamping plates 32 fit precisely against the sides of the powder spraying gun 8. The extension length of the two second hydraulic rods 31 is determined according to their distance from the powder spraying gun 8.

[0086] In one specific embodiment of this utility model, the angle of the arc-shaped clamping plate 32 is less than 180 degrees and greater than 120 degrees. The inner diameter of the arc-shaped clamping plate 32 is the same as the outer diameter of the outer wall of the powder spraying gun 8, which can ensure that the two arc-shaped clamping plates 32 are stably bound to the outer periphery of the powder spraying gun 8.

[0087] In a specific embodiment of this utility model, in order to ensure the balance and stability of the frame 1, the four sides of the lower frame 11 are aligned with the four sides of the U-shaped frame 12. The U-shaped frame 12 has two layers. Two guide wheel mounting seats are provided on the outer frame of the side flat frame 121 of the U-shaped frame 12 adjacent to the lower frame 11. Horizontal guide wheels are installed in the guide wheel mounting seats. Guide wheel slide rails 46 are provided on both sides of the vacuum tank 6 through brackets. The guide wheel slide rails 46 are vertically aligned with the track 44, and the guide wheel slide rails 46 and the track 44 have the same route.

[0088] The frame 1 has three layers, each aligned vertically for stable operation. Guide wheels 45 are installed on both sides of the first layer U-shaped frame 12. The guide wheels 45 travel on guide wheel tracks 44 in the same direction as the running wheels 41. The guide wheels 45 are laterally engaged in the grooves of the guide wheel slide rails 46 to prevent the frame from tipping over and further ensure operational stability.

[0089] In one specific embodiment of this utility model, both the side frame 121 and the middle frame 122 may include a rectangular outer frame and reinforcing rods uniformly connected to the outer frame. The dimensions of the two side frames 121 and the middle frame 122 are designed according to the dimensions of the lower frame 11.

[0090] The central space of the U-shaped frame 12 formed by the two side frames 121 and the middle frame 122 can accommodate the extension of the powder spraying gun 8 and the second hydraulic rod 31. Flat plates can also be laid on the side frames 121 and the middle frame 122 to facilitate personnel walking and inspecting the powder spraying gun 8. Ladders can also be erected between the side frames 121 or the middle frame 122 and the external platform of the powder spraying gun 8 to facilitate personnel access to the external platform of the powder spraying gun 8 for maintenance.

[0091] The spacing between each layer is set according to the height and operating conditions of the powder spraying gun 8. In one specific embodiment of this utility model, the U-shaped frame 12 of the upper layer is aligned with the outer platform of the powder spraying gun 8. The height of the U-shaped frame 12 should facilitate personnel to move to the outer platform of the powder spraying gun 8 for inspection and maintenance when necessary.

[0092] In one specific embodiment of this utility model, railings 5 ​​are provided around the lower frame 11 and the U-shaped frame 12. The railings 5 ​​ensure the safety of personnel and equipment.

[0093] In this embodiment, the electrical control switches for components such as the first hydraulic rod 21, the second hydraulic rod 31, and the rotating motor 42 are all installed on the controller, which is controlled by the operator.

[0094] The magnesium smelting vacuum tank cover cart according to the present invention is described above by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various modifications can be made to the magnesium smelting vacuum tank cover cart proposed in the present invention without departing from the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the contents of the appended claims.

Claims

1. A vacuum tank cover vehicle for magnesium smelting, characterized in that, Includes a frame and a cover lifting mechanism, a powder spray gun clamping mechanism, and a traveling mechanism mounted on the frame, wherein, The frame includes a square lower frame at the bottom and a U-shaped frame arranged above the lower frame. The U-shaped frame includes two side frames arranged in parallel and a middle frame connected between one end of the two side frames. The cover lifting mechanism is located in the middle of the lower frame, and the cover lifting mechanism includes two sets of cover connecting parts that are driven to rise and fall by a first hydraulic rod; The powder spray gun clamping mechanism includes two second hydraulic rods that extend opposite each other on the U-shaped frame, and an arc-shaped clamping plate is provided at the end of the second hydraulic rod; The walking mechanism includes walking wheels respectively located at the four corners below the lower frame. The walking wheels are driven to rotate by a rotating motor and move on the track. The frame is placed above the cover of the vacuum tank. The powder spray gun on the cover passes through the middle of the lower frame. The cover connector is connected to the cover and then lifted. The arc-shaped clamp extends out and fits against the outer wall of the powder spray gun. The walking mechanism moves.

2. The magnesium smelting vacuum tank cover vehicle as described in claim 1, characterized in that, The lower frame includes a rectangular frame, with wheel mounting brackets provided at both ends of the lower side of the width border of the rectangular frame, and two support frames connected between the two width borders, the two support frames being symmetrical about the center plane of the rectangular frame; The support frame includes two rectangular plates connected between the two width borders, and the support frame is used to mount the first hydraulic rod.

3. The magnesium smelting vacuum tank cover vehicle as described in claim 2, characterized in that, The traveling wheel is connected in the traveling wheel mounting frame, the rotating motor is fixed on the lower side of the lower frame and connected to the traveling wheel through a reducer, a brake is provided on the traveling wheel, and the track is respectively set on the track brackets on both sides of the vacuum tank.

4. The magnesium smelting vacuum tank cover vehicle as described in claim 2, characterized in that, The fixing cylinder of the first hydraulic rod is fixed to the upper side of the support frame by a bracket and is parallel to the support frame. An upper shaft is fixed to the end of the telescopic rod of the first hydraulic rod. The upper shaft is rotatably connected to the upper end of the rocker arm. The lower end of the rocker arm is rotatably connected to the lower shaft. The lower shaft is fixed between the two rectangular plates. The rocker arm swings in the vertical plane of the lower frame with the lower shaft as the center by the extension and retraction of the first hydraulic rod. A central shaft is rotatably connected to the middle of the rocker arm, and a chain connecting plate is fixed on the central shaft. The chain connecting plate is in sliding contact with the rocker arm. A first sprocket and a second sprocket are sequentially arranged along the space between the two rectangular plates. The first sprocket is adjacent to the chain connecting plate. A first chain is engaged on the first sprocket, and a second chain is engaged on the second sprocket. The upper end of the second chain is rotatably connected to one end of an extension rod to adjust the chain connecting plate to be horizontal. The other end of the extension rod is rotatably connected to the end of the chain connecting plate that extends out of the rocker arm. The upper end of the first chain is rotatably connected to the chain connecting plate. The lower ends of the first chain and the second chain are flush, and the cover connector is connected to the lower ends of the first chain and the second chain respectively.

5. The magnesium smelting vacuum tank cover vehicle as described in claim 1, characterized in that, The fixing cylinder of the second hydraulic rod is mounted on the side frame by a bracket, and the end of the telescopic rod of the second hydraulic rod is fixed to the middle of the outer wall of the arc-shaped plate.

6. The magnesium smelting vacuum tank cover vehicle as described in claim 1, characterized in that, The angle of the arc-shaped clamp is less than 180 degrees and greater than 120 degrees, and the inner diameter of the arc-shaped clamp is the same as the outer diameter of the outer wall of the powder spraying gun.

7. The magnesium smelting vacuum tank cover vehicle as described in claim 1, characterized in that, The lower frame is aligned with the U-shaped frame. The U-shaped frame has two layers. Two guide wheel mounting seats are provided on the outer edge of the side frame of the U-shaped frame adjacent to the lower frame. A horizontal guide wheel is installed in the guide wheel mounting seat. Guide wheel slide rails are provided on both sides of the vacuum tank through brackets. The guide wheel slide rails correspond vertically to the track.

8. The magnesium smelting vacuum tank cover vehicle as described in claim 7, characterized in that, The upper U-shaped frame of the two layers is aligned with the outer platform of the powder spraying gun.

9. The magnesium smelting vacuum tank cover vehicle as described in claim 1, characterized in that, Both the side frame and the middle frame include a rectangular outer frame and reinforcing rods evenly connected to the outer frame.

10. The magnesium smelting vacuum tank cover vehicle as described in claim 1, characterized in that, Railings are provided around both the lower frame and the U-shaped frame.

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