High-temperature pouring pre-cooling automation equipment

Abstract

The invention discloses high-temperature pouring pre-cooling automatic equipment, and relates to the field of high-temperature pouring equipment. The reversing frame device comprises two first guide rail assemblies which extend front and back, are spaced up and down and are opposite, and the front side and the rear side of the first guide rail assembly on the upper side are provided with a feeding station and a discharging station correspondingly. Sand tables capable of bearing high-temperature sand molds are arranged at the upper parts of the carrier loaders, and the carrier loaders can walk along the first guide rail assembly; the two lifting cart devices and the two first guide rail assemblies on the front side and the rear side of the reversing frame device jointly form a circulating conveying line for the carrying cart to move, and the two lifting cart devices can drive the carrying cart to ascend and descend and can push the carrying cart on the first guide rail assemblies front and back. And the carrier loader is driven to move from the feeding station to the discharging station through the first guide rail assembly on the lower side and then move from the discharging station to the feeding station through the first guide rail assembly on the upper side. The device is low in failure rate, high in automation degree, low in cost and capable of providing conveying and pre-cooling functions in the high-temperature pouring production process.

Description

Technical Field

[0001] This invention relates to the field of high-temperature casting equipment technology, and in particular to an automated high-temperature casting pre-cooling device. Background Technology

[0002] In the stainless steel casting process, molten metal from the furnace is poured into a high-temperature sand mold emerging from the kiln. The sand mold then undergoes pre-cooling via automated high-temperature pre-cooling equipment before being transferred to an integrated cooling kiln for the cooling process. Currently, there are several implementation methods for the high-temperature pre-cooling process, such as chain conveyors with clamps, manual trolley conveyors, and robotic arm conveyors.

[0003] However, the existing technologies listed above have the following problems: (1) For chain conveying with clamps, the clamps are pneumatic or electric clamps. Due to the high radiant heat temperature during high-temperature casting, the pneumatic clamps will expand due to the high temperature environment, resulting in a high failure rate of the pneumatic clamps. The motors of the electric clamps are prone to high-temperature demagnetization, resulting in frequent motor failures, etc., thus failing to meet the requirements of automated production. (2) For manual trolley conveying, manual trolley material handling is labor-intensive and the working environment temperature is high, posing a serious threat to the safety and health of operators. Workers need to wear special heat-insulating equipment, resulting in low work efficiency and high enterprise costs, thus making it difficult to adapt to the production needs of high-capacity automated production lines. (3) For robotic arm conveying, the robotic arm grabs the sand mold filled with high-temperature molten metal, which can easily damage the sand mold, leading to problems such as leakage and overall damage. Moreover, the sand molds have different shapes, and the types of clamps are numerous and complex. Changing the clamps takes a long time and the equipment cost is high.

[0004] Therefore, there is an urgent need to develop a new automated high-temperature precooling equipment that can solve the problems of high failure rate, high labor cost, large equipment investment and low degree of automation in the existing technology. Summary of the Invention

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an automated pre-cooling device for high-temperature casting, which has the advantages of low failure rate, high degree of automation, and low labor and equipment costs, and can realize the conveying and pre-cooling functions in the high-temperature casting production process.

[0006] This invention provides an automated high-temperature casting pre-cooling device, comprising: A rotary frame device includes two first guide rail assemblies extending in the front-back direction. The two first guide rail assemblies are spaced apart and arranged opposite each other in the vertical direction. The front and rear sides of the first guide rail assembly located on the upper side are respectively provided with loading station and unloading station. A transport vehicle, the upper part of which is provided with a sand table for carrying high-temperature sand molds, and there are multiple transport vehicles, which are configured to travel along the first guide rail assembly; Two lifting trolley devices are provided, respectively located on the front and rear sides of the rotary frame device, so that the two lifting trolley devices and the two first guide rail assemblies together form a circulating conveyor line for moving the transport vehicle. The two lifting trolley devices are configured to drive the transport vehicle to move in the vertical direction and to push the transport vehicle located on the first guide rail assembly in the front-back direction, so as to drive the transport vehicle from the loading station to the unloading station via the first guide rail assembly located on the lower side, and then from the unloading station to the loading station via the first guide rail assembly located on the upper side.

[0007] The automated high-temperature casting pre-cooling equipment according to embodiments of the present invention has at least the following beneficial effects: two lifting trolley devices and two first guide rail assemblies located on the front and rear sides of the rotary frame device together form a circular conveyor line. Multiple transport vehicles are arranged on the circular conveyor line. With the cooperation of the two lifting trolley devices, each transport vehicle can sequentially move along the circular conveyor line under the action of lifting and pushing. For the transport vehicle moving to the loading station, the high-temperature sand mold containing high-temperature molten metal is placed in the sand tray of the transport vehicle. Then, through the lifting action of the corresponding lifting trolley device, the transport vehicle located at the loading station is driven. Along with the high-temperature sand mold, it can move downwards. Then, through the pushing action of the lifting trolley device, the transport vehicle, which has moved to the lower position, carries the high-temperature sand mold and moves in a straight line along the first guide rail assembly on the lower side. The transport vehicle moves to another lifting trolley device. Then, using the lifting action of the lifting trolley device, the transport vehicle carries the high-temperature sand mold upwards to the unloading station. During this process, the high-temperature sand mold and the high-temperature molten metal inside can be pre-cooled by natural cooling. After the pre-cooling work, the high-temperature sand mold on the transport vehicle located at the unloading station can be taken out and transferred to the cooling box for further cooling.

[0008] By adopting the above-mentioned structural setup in the stainless steel casting production process, not only can high-temperature sand molds containing high-temperature molten metal be stably and continuously transported towards the cooling box, but also the high-temperature sand molds and high-temperature molten metal can be pre-cooled by room temperature cooling, thereby improving the degree of automation and work efficiency, meeting production capacity requirements, and overcoming the problems of high failure rate, high labor costs, large equipment investment and low degree of automation in existing technologies.

[0009] In some embodiments of the present invention, the lifting trolley device includes a lifting mechanism and a trolley mechanism. The lifting mechanism includes a frame, a lifting frame, and a lifting drive assembly. The lifting frame is provided with a second guide rail assembly extending in a front-rear direction. The lifting drive assembly is disposed on the frame and configured to drive the lifting frame to move in a vertical direction so that the second guide rail assembly docks with a corresponding first guide rail assembly. The trolley mechanism is disposed on the lifting frame and configured to push the transport vehicle located on the first guide rail assembly onto the second guide rail assembly, and to push the transport vehicle located on the second guide rail assembly onto the first guide rail assembly.

[0010] In some embodiments of the present invention, the lifting drive assembly includes a lifting cylinder, a lifting frame, sprockets, and a chain. Both the lifting frame and the lifting mechanism are slidably connected to the machine frame in a vertical direction. At least two sprockets are provided and rotatably mounted on the lifting frame. The chain is arranged in a one-to-one correspondence with each sprocket. One end of each chain is fixedly connected to the machine frame, and the other end passes around the corresponding sprocket and is fixedly connected to the lifting frame. At least two lifting cylinders are provided, with one end connected to the machine frame and the other end connected to the lifting frame; and / or, The lifting trolley device further includes a first inductive switch, which is disposed on the lifting frame and configured to generate a detection signal when the transport vehicle moves onto the lifting frame. The lifting drive assembly is also configured to drive the lifting frame to move in the vertical direction when the first inductive switch generates a detection signal.

[0011] In some embodiments of the present invention, the trolley mechanism includes a sliding frame, a translation cylinder, a push block, and a locking block. One end of the translation cylinder is connected to the lifting frame, and the other end is connected to the sliding frame. The translation cylinder is configured to drive the sliding frame to move in a front-to-back direction. The push block is disposed on the sliding frame and is configured to push the transport vehicle located on the second guide rail assembly onto the first guide rail assembly when the sliding frame moves in a front-to-back direction toward the first guide rail assembly. The locking block is located on the side of the push block that is close to the first guide rail assembly in the front-to-back direction and is rotatably disposed on the sliding frame. The rotation axis of the locking block extends in a left-to-right direction. The locking block is configured to be in an inclined state under the action of gravity and can form a limiting structure with the push block for front-to-back limiting of the transport vehicle located on the second guide rail assembly.

[0012] In some embodiments of the present invention, each of the lifting frames is further provided with a third guide rail assembly extending in the front-to-back direction, and the rotary frame device is provided with two fourth guide rail assemblies extending in the front-to-back direction. The two fourth guide rail assemblies are spaced apart and arranged opposite each other in the vertical direction. The lifting drive assembly is further configured to drive the lifting frame to move in the vertical direction so that the third guide rail assembly docks with the corresponding fourth guide rail assembly. Each of the sliding frames has a plurality of support rollers on its left and right sides, and the support rollers are configured to move back and forth along the third guide rail assembly and the fourth guide rail assembly; and / or, The locking block is also configured to pull the transport vehicle located on the first guide rail assembly onto the second guide rail assembly when the sliding frame moves in a forward-backward direction away from the first guide rail assembly.

[0013] In some embodiments of the present invention, the slewing frame device is provided with a first hook and a second hook on both the front and rear sides. The first hook is located above the second hook, with the opening of the first hook facing upward and the opening of the second hook facing downward. Each lifting frame is provided with a plurality of limiting rods on the side of the first guide rail assembly along the front-rear direction. The limiting rods extend along the left-right direction. The lifting drive assembly is also configured to drive the lifting frame to move in the up-down direction so that the limiting rods are engaged with the first hook or the second hook, so that the lifting frame remains horizontal in the front-rear direction.

[0014] In some embodiments of the present invention, a plurality of braking devices are provided on the front and rear sides of the slewing frame device, and the braking device is provided below each of the first guide rail assemblies. The braking devices are configured to apply a braking effect to the transport vehicle located on the front and rear sides of the first guide rail assembly.

[0015] In some embodiments of the present invention, the braking device includes a first cylinder and a brake shaft, wherein the movable rod of the first cylinder is connected to the brake shaft to drive the brake shaft to move linearly, so that the brake shaft can engage or disengage the vehicle. Alternatively, the braking device includes a base, a connecting shaft, a compression spring, and an arc-shaped spring steel plate. One end of the spring steel plate is connected to the base, one end of the connecting shaft is engaged with the base, and the other end is connected to the other end of the spring steel plate. The compression spring is sleeved on the connecting shaft and abuts against the base and the spring steel plate respectively.

[0016] In some embodiments of the present invention, a leveling device is provided above the first guide rail assembly located on the upper side. The leveling device includes a rotating shaft, a sand scraper, and a rotating drive assembly. The sand scraper and the rotating shaft both extend in the left-right direction. The upper end of the sand scraper is fixedly connected to the rotating shaft. The rotating drive assembly is configured to drive the rotating shaft to rotate so that the sand scraper can avoid the transport vehicle or level the heat-insulating sand in the sandbox.

[0017] In some embodiments of the present invention, the transport vehicle includes a frame, traveling rollers, and dust baffles. The frame has multiple traveling rollers extending axially in a left-right direction on each of its left and right sides. The sand table is fixedly connected to the upper part of the frame. The frame also has dust baffles extending in a front-rear direction on its left and right sides. These dust baffles are fixedly connected to the lower part of the sand table and are located outside the traveling rollers to provide dust protection for them; and / or, The loading station and the unloading station are provided with a heat insulation cover assembly on at least one side along the left and right direction. The heat insulation cover assembly is located on the upper side of the lifting trolley device. The heat insulation cover assembly includes a bracket and multiple cotton boards. The cotton boards are provided on the front and rear sides, the upper side, and the side away from the lifting trolley device along the left and right direction of the bracket. The multiple cotton boards are fixedly connected to the bracket to form a heat insulation cavity.

[0018] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0019] Figure 1 This is a side view schematic diagram of the high-temperature casting pre-cooling automated equipment provided according to an embodiment of the present invention. Figure 2 This is a structural schematic diagram of a transport vehicle provided according to an embodiment of the present invention from a frontal view angle; Figure 3 This is a structural schematic diagram of a transport vehicle provided according to an embodiment of the present invention from a downward viewing angle; Figure 4 This is a schematic diagram of the lifting trolley device provided according to an embodiment of the present invention from a side view angle; Figure 5 This is a structural schematic diagram of the lifting trolley device provided according to an embodiment of the present invention from a frontal view angle; Figure 6 yes Figure 5 An enlarged schematic diagram of part A in the middle; Figure 7This is a partial structural schematic diagram of the lifting trolley device provided according to an embodiment of the present invention from a top view angle; Figure 8 This is a schematic diagram of the rotating frame device provided in an embodiment of the present invention from a side view angle; Figure 9 yes Figure 8 Enlarged schematic diagram of part B in the middle; Figure 10 This is a schematic diagram of the braking device provided according to an embodiment of the present invention; Figure 11 This is a structural schematic diagram of the rotary frame device provided according to an embodiment of the present invention from the main view angle.

[0020] Reference numerals: 100, Lifting trolley device; 111, Frame; 112, Lifting frame; 113, Lifting frame; 114, Second guide rail assembly; 115, Limiting rod; 120, Lifting cylinder; 131, Chain; 132, Sprocket; 133, Connecting rod; 140, Trolley mechanism; 141, Translation cylinder; 142, Sliding frame; 143, Support roller; 144, Third guide rail assembly; 145, Locking block; 146, Pushing block; 151, First inductive switch; 152, Second inductive switch; 153, Inductive plate; 154, Third inductive switch; 200. Transport vehicle; 210. Frame; 220. Traveling rollers; 230. Axle; 240. Sand table; 250. Dustproof baffle; 260. Clip hole; 300. Rotary frame device; 301. First guide rail assembly; 302. Support frame; 303. Side baffle; 311. First hook; 312. Second hook; 320. Second brake device; 321. Base; 322. Spring steel plate; 323. Connecting shaft; 324. Compression spring; 330. First brake device; 331. First cylinder; 332. Brake shaft; 340. Fourth guide rail assembly; 400, Heat insulation cover assembly; 410, Cotton board; 420, Bracket; 500, Hydraulic system; 610, Second cylinder; 620, Scraper blade; 630, Rotating shaft; 640, Rocker arm; 650, Fixing frame. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] In the description of this invention, it should be understood that features specified as "first" or "second" may explicitly or implicitly include one or more of those features. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] The following is for reference. Figures 1 to 11 This invention describes an automated high-temperature casting pre-cooling device provided according to an embodiment of the present invention.

[0025] like Figures 1 to 11 As shown, the high-temperature casting pre-cooling automated equipment according to the embodiments of the present invention can be applied to the casting production of high-temperature metal products, especially the high-temperature casting manufacturing of stainless steel. The high-temperature casting pre-cooling automated equipment of this embodiment has the advantages of low failure rate, low energy consumption, high degree of automation, and low labor and equipment costs. It can realize the conveying and pre-cooling functions of high-temperature metal products in the process of cooling and forming high-temperature casting molten metal in sand mold.

[0026] like Figures 1 to 3 , Figure 8 and Figure 11 As shown, the automated high-temperature casting pre-cooling equipment includes a rotary frame device 300, a transport vehicle 200, and a lifting trolley device 100.

[0027] The rotary frame device 300 includes a support frame 302 and two first guide rail assemblies 301. The two first guide rail assemblies 301 are fixedly mounted on the support frame 302. The length of each first guide rail assembly 301 extends in the front-to-back direction. The two first guide rail assemblies 301 are arranged at intervals in the vertical direction. Moreover, the two first guide rail assemblies 301 are arranged opposite to each other in the vertical direction. The front and rear sides of the upper first guide rail assembly 301 are respectively provided with loading station and unloading station.

[0028] It is understood that the support frame 302 can be fixed to the ground with expansion bolts. The first guide rail assembly 301 provides guidance for the movement of the transport vehicle 200. The specific structure of the first guide rail assembly 301 is not limited. In this embodiment, the first guide rail assembly 301 includes two first guide rails arranged at intervals in the left-right direction. The first guide rails are made of square rods, and the upper surface of the square rods can provide support for the transport vehicle 200. If the loading station is located at the front of the rotary frame device 300, the unloading station is located at the rear of the rotary frame device 300. Figure 1 and Figure 8 The single arrow in the image indicates the direction of movement of the transport vehicle 200.

[0029] The upper part of the transport vehicle 200 is equipped with a sand tray 240, which is used to support the high-temperature sand mold. It can be understood that the sand tray 240 has an open cavity facing upwards, and a certain amount of heat-insulating sand can be placed in the cavity. When the high-temperature sand mold containing high-temperature molten metal is placed in the cavity of the sand tray 240, the heat-insulating sand surrounds the high-temperature sand mold. At this time, the heat-insulating sand can isolate the radiant heat of the high-temperature sand mold and has a heat preservation effect, so that the pre-cooling rate of the high-temperature sand mold and the high-temperature molten metal inside is relatively slow.

[0030] The transport vehicle 200 has multiple vehicles, such as Figure 1 and Figure 8 As shown, the transport vehicle 200 is configured to move along the first guide rail assembly 301. In this embodiment, the transport vehicle 200 is a driveless type and requires the assistance of the lifting trolley device 100 to move along the first guide rail assembly 301. Multiple transport vehicles 200 located on the first guide rail assembly 301 are arranged sequentially in the front-to-back direction and are positioned close to each other.

[0031] Specifically, such as Figure 2 and Figure 3 As shown, the structure of the transport vehicle 200 includes a frame 210, traveling rollers 220, and a dustproof baffle 250. The frame 210 extends in the longitudinal direction, and multiple traveling rollers 220 are provided on both the left and right sides of the frame 210. The traveling rollers 220 are rotatably mounted on the frame 210 and can rotate relative to the frame 210. The axial direction of the traveling rollers 220 extends in the lateral direction. The traveling rollers 220 on the left and right sides of the frame 210 are respectively arranged corresponding to two first guide rails. The linear movement of the transport vehicle 200 is achieved by the traveling rollers 220 rolling on the first guide rail assembly 301. In this embodiment, the axial cross-section of the traveling rollers 220 is T-shaped. The frame 210 is provided with multiple axles 230 extending in the lateral direction. The multiple axles 230 are arranged at intervals in the longitudinal direction, and the left and right ends of each axle 230 are equipped with traveling rollers 220 through bearings.

[0032] The sand table 240 is located above the frame 210 and is fixedly connected to the upper part of the frame 210. Dust baffles 250 are also provided on the left and right sides of the frame 210. The length of the dust baffles 250 extends in the front-to-back direction, and the dust baffles 250 are fixedly connected to the lower part of the sand table 240. The dust baffles 250 are located outside the traveling rollers 220 to protect them from dust. In this embodiment, the dust baffles 250 are inverted L-shaped when viewed in the front-to-back direction, and the lower end of the dust baffles 250 extends to the bottom of the bearings on the traveling rollers 220 to prevent dust from easily entering the bearings. Of course, it is possible that in other embodiments, the transport vehicle 200 may not have the dust baffles 250. It is understood that the specific structure of the frame 210 and the specific shape of the sand table 240 are not limited and can be designed according to actual conditions.

[0033] Two lifting trolley devices 100 are provided, and the two lifting trolley devices 100 are respectively located on the front and rear sides of the rotary frame device 300, so that the two lifting trolley devices 100 and the two first guide rail assemblies 301 of the rotary frame device 300 together form a circulating conveyor line. The circulating conveyor line is used to move the transport vehicle 200. Multiple transport vehicles 200 can be set on the circulating conveyor line, so that the transport vehicles 200 can be used repeatedly and transport the high-temperature sand mold from the loading station to the unloading station in sequence according to a certain path.

[0034] Two lifting trolley devices 100 are configured to move the transport trolley 200 vertically, allowing it to be transferred onto one of the first guide rail assemblies 301. They are also configured to push the transport trolley 200 on the first guide rail assembly 301 in a forward-backward direction, causing each transport trolley 200 to move from the loading station via the lower first guide rail assembly 301 to the unloading station, and then from the unloading station back to the loading station via the upper first guide rail assembly 301. The two lifting trolley devices 100 can be arranged symmetrically about the rotary frame device 300.

[0035] Specifically, such as Figures 4 to 7As shown, each lifting trolley device 100 includes a lifting mechanism and a trolley mechanism 140. The lifting mechanism includes a frame 111, a lifting frame 112, and a lifting drive assembly. The frame 111 can be fixed to the ground by expansion bolts. The lifting frame 112 is slidably connected to the frame 111 in the vertical direction, such as through a guide rail slider pair. The lifting frame 112 is provided with a second guide rail assembly 114, which is fixedly installed on the lifting frame 112. The second guide rail assembly 114 extends in the front-back direction and is correspondingly arranged with the first guide rail assembly 301. The second guide rail assembly 114 includes two second guide rails arranged at intervals in the left-right direction. The two second guide rails can provide support and guidance for the traveling rollers 220 on the left and right sides of the transport vehicle 200, respectively. The second guide rails are made of square rods.

[0036] The lifting drive assembly is mounted on the frame 111 and is configured to drive the lifting frame 112 to move in the vertical direction to adjust the height position of the lifting frame 112, thereby enabling the second guide rail assembly 114 to dock with the corresponding first guide rail assembly 301, facilitating the transfer of the transport vehicle 200 from the first guide rail assembly 301 to the second guide rail assembly 114, or from the second guide rail assembly 114 to the first guide rail assembly 301.

[0037] Specifically, the lifting drive assembly includes a lifting cylinder 120, a lifting frame 113, sprockets 132, and chains 131. The lifting frame 113 is slidably connected to the frame 111 in the vertical direction via a guide rail slider pair. At least two sprockets 132 are provided, and all sprockets 132 are rotatably mounted on the lifting frame 113. Chains 131 are arranged in a one-to-one correspondence with the sprockets 132. One end of the chain 131 is fixedly connected to the frame 111 via a connecting rod 133, and the other end of the chain 131 passes around the corresponding sprocket 132 and is fixedly connected to the lifting frame 112 via the connecting rod 133. At least two lifting cylinders 120 are provided, one end of which is connected to the frame 111, and the other end is connected to the lifting frame 113. The lifting cylinders 120 are configured to drive the lifting frame 113 to move vertically.

[0038] In this embodiment, there are two sprockets 132, spaced apart in the front-to-back direction. The rotation axis of the sprockets 132 extends in the front-to-back direction. Double-row sprockets can be used for the sprockets 132, and double-row chains are used for the chains 131. There are two lifting cylinders 120, spaced apart in the front-to-back direction. The specific structures of the frame 111, lifting frame 113, and lifting frame 112 can be designed according to actual needs and are not specifically limited here. The connecting rod 133 can consist of a suspension rod and an adjusting rod, facilitating adjustment of the tension of the chain 131.

[0039] Understandably, the extension of the movable rod of the lifting cylinder 120 drives the lifting frame 113 to move all the sprockets 132 upwards. At this time, since one end of the chain 131 on the sprocket 132 is fixedly connected to the frame 111 and the other end is fixedly connected to the lifting frame 112, the height position of the sprocket 132 changes upwards, so the sprocket 132 will rotate. At the same time, under the tension of the chain 131, the lifting frame 112 can be raised to a certain height. The retraction of the piston rod of the lifting cylinder 120 drives the lifting frame 113 to move all the sprockets 132 downwards. At this time, the height position of the sprockets 132 changes downwards, and the lifting frame 112 will move downwards due to its own gravity. At the same time, the chain 131 will drive the sprocket 132 to rotate and can apply a certain tension to the lifting frame 112, causing the lifting frame 112 to slowly descend to a certain height.

[0040] Compared to directly driving the lifting cylinder 120 to the lifting frame 112, this embodiment, by adopting the lifting drive assembly with the above-described structure, can solve the problems of poor synchronization between the two lifting cylinders 120 and easy failure of the synchronization valve, and can save the synchronization valve.

[0041] The trolley mechanism 140 is mounted on the lifting frame 112. The trolley mechanism 140 can move up and down together with the lifting frame 112. The trolley mechanism 140 is configured to push the transport vehicle 200 located on the first guide rail assembly 301 onto the second guide rail assembly 114, and to push the transport vehicle 200 located on the second guide rail assembly 114 onto the first guide rail assembly 301.

[0042] Specifically, the trolley mechanism 140 includes a sliding frame 142, a translation cylinder 141, a push block 146, and a locking block 145. The sliding frame 142 extends in the front-to-back direction. One end of the translation cylinder 141 is connected to the lifting frame 112, and the other end is connected to the sliding frame 142. The translation cylinder 141 is configured to drive the sliding frame 142 to move in the front-to-back direction, allowing the sliding frame 142 to move towards or away from the first guide rail assembly 301. In this embodiment, the high-temperature casting pre-cooling automated equipment also includes a hydraulic system 500. The hydraulic system 500 is configured to provide hydraulic oil to the lifting cylinder 120 and the translation cylinder 141, driving the lifting cylinder 120 and the translation cylinder 141 to perform extension and retraction movements.

[0043] Push block 146 is mounted on sliding frame 142. Push block 146 can be fixed to sliding frame 142 by bolts. Push block 146 can move with sliding frame 142 in the front-back direction. Moreover, push block 146 is located on the upper surface of sliding frame 142. Push block 146 can exert a pushing force on transport vehicle 200 located on second guide rail assembly 114. Push block 146 is configured to push transport vehicle 200 located on second guide rail assembly 114 onto first guide rail assembly 301 when sliding frame 142 moves in the front-back direction toward the first guide rail assembly 301, thereby realizing the transfer of transport vehicle 200 from lifting trolley device 100 to rotating frame device 300.

[0044] The locking block 145 is located on the side of the push block 146 near the first guide rail assembly 301 in the front-back direction. There is a certain front-back distance between the locking block 145 and the push block 146. The locking block 145 can be rotatably mounted on the sliding frame 142 via a rotating shaft. The rotation axis of the locking block 145 extends in the left-right direction. Furthermore, the locking block 145 is configured to be tilted under gravity and, together with the push block 146, forms a limiting structure. This limiting structure can be used to limit the front-back movement of the transport vehicle 200 located on the second guide rail assembly 114, preventing the transport vehicle 200 from easily slipping off the lifting frame 112 during its lifting and lowering process, thus ensuring the stability of the transport vehicle 200 on the lifting frame 112. The number and specific shape of the push block 146 and the locking block 145 can be set according to actual design requirements and are not specifically limited here.

[0045] In this embodiment, as Figure 3 and Figure 4 As shown, the frame 210 has several locking holes 260 on both the front and rear sides. The locking holes 260 allow the locking blocks 145 located below the locking holes 260 to be engaged, so that the locking blocks 145 can engage with the carrier 200. Understandably, when the locking block 145 is in a natural tilted state, it tilts downwards towards the rotating frame 300. Therefore, during the process of the transport vehicle 200 moving from the first guide rail assembly 301 to the second guide rail assembly 114, the transport vehicle 200 can apply downward pressure to the locking block 145, causing it to rotate and releasing its obstruction. This allows the transport vehicle 200 to move a certain distance relative to the locking block 145, positioning the locking hole 260 directly above the locking block 145. At this point, the downward pressure from the transport vehicle 200 on the locking block 145 is removed, and the locking block 145 rotates in the opposite direction under its own weight, allowing it to engage with the locking hole 260 and maintain its tilted state. Meanwhile, the push block 146 can obstruct the transport vehicle 200, preventing it from continuing to move on the lifting frame 112.

[0046] When the locking block 145 is inserted into the locking hole 260, there is a front-to-back gap between the push block 146 and the transport vehicle 200. If the transport vehicle 200 on the lifting frame 112 moves relative to the sliding frame 142 toward the rotating frame device 300, the tilted locking block 145 can block the transport vehicle 200 and prevent the transport vehicle 200 from falling off the lifting frame 112.

[0047] When the lifting cylinder 120 drives the sliding frame 142 to move in the front-to-back direction toward the rotating frame device 300, the locking block 145 moves relative to the transport vehicle 200 along with the sliding frame 142. At this time, the locking block 145 will rotate due to the downward pressure of the transport vehicle 200, allowing the locking block 145 to disengage from the locking hole 260. Then, the push block 146 will contact and push the transport vehicle 200 as it moves with the sliding frame 142, so as to push the transport vehicle 200 from the second guide rail assembly 114 onto the first guide rail assembly 301.

[0048] Furthermore, such as Figures 5 to 7 , Figure 11 As shown, each lifting frame 112 is also provided with a third guide rail assembly 144, which is fixedly installed on the lifting frame 112. The third guide rail assembly 144 extends in the front-back direction and includes two third guide rails arranged at intervals in the left-right direction. Furthermore, the rotating frame device 300 is provided with two fourth guide rail assemblies 340, which are fixedly connected to the support frame 302. The two fourth guide rail assemblies 340 are arranged at intervals in the up-down direction and are arranged vertically opposite each other. The upper fourth guide rail assembly 340 corresponds to the upper first guide rail assembly 301, and the lower fourth guide rail assembly 340 corresponds to the lower first guide rail assembly 301. Each fourth guide rail assembly 340 extends in the front-back direction and includes two fourth guide rails arranged at intervals in the left-right direction.

[0049] Furthermore, the lifting drive assembly is configured to drive the lifting frame 112 to move vertically, so that the third guide rail assembly 144 on the lifting frame 112 can dock with the corresponding fourth guide rail assembly 340 of the rotary frame device 300. Each sliding frame 142 has multiple support rollers 143 on its left and right sides, spaced apart in the front-to-back direction. The rotation axis of the support rollers 143 extends in the left-to-right direction. The support rollers 143 can be mounted on the sliding frame 142 via shafts and bearings, allowing them to rotate relative to the sliding frame 142 around their own central axis. The support rollers 143 are configured to move back and forth along the third guide rail assembly 144 and the fourth guide rail assembly 340.

[0050] In this embodiment, two third guide rails are located between two second guide rails, and two fourth guide rails are located between two first guide rails. The cross-sectional shapes of both the third and fourth guide rails are U-shaped, and the axial cross-sectional shape of the support roller 143 is T-shaped. It is understood that by setting the support roller 143, the third guide rail assembly 144, and the fourth guide rail assembly 340, the sliding frame 142 can move smoothly in a straight line under the driving action of the translation cylinder 141. Furthermore, it ensures that the sliding frame 142 receives strong support, reduces the force exerted by the sliding frame 142 on the translation cylinder 141 in the vertical direction, and ensures that the translation cylinder 141 is more durable.

[0051] Furthermore, such as Figure 5 As shown, the lifting trolley device 100 also includes a first inductive switch 151, which is fixedly mounted on the lifting frame 112. The first inductive switch 151 is configured to generate a detection signal when the transport vehicle 200 moves onto the lifting frame 112. At the same time, the lifting drive assembly is also configured to drive the lifting frame 112 to move in the vertical direction when the first inductive switch 151 generates a detection signal.

[0052] Understandably, the first inductive switch 151 can be a limit switch or a photoelectric switch. The first inductive switch 151 is located inside the second guide rail and can detect the position of the frame 210. Both the first inductive switch 151 and the lifting drive assembly are electrically connected to a control device, which can be a PLC controller or a host computer, etc. For one of the lifting trolley devices 100, when the transport vehicle 200 is transferred from the upper first guide rail assembly 301 to the second guide rail assembly 114, the first inductive switch 151 will generate a detection signal, and the lifting drive assembly will drive the lifting frame 112 to move the transport vehicle 200 downwards under the command of the control device. For the other lifting trolley device 100, when the transport vehicle 200 is transferred from the lower first guide rail assembly 301 to the second guide rail assembly 114, the first inductive switch 151 will be triggered, and the lifting drive assembly will drive the lifting frame 112 to move the transport vehicle 200 upwards.

[0053] In addition, such as Figure 5 and Figure 6As shown, the lifting trolley device 100 also includes a second inductive switch 152 and an inductive plate 153. The second inductive switch 152 is fixedly mounted on the lifting frame 112, and the inductive plate 153 is fixedly mounted on the sliding frame 142. The second inductive switch 152 and the control valve of the translation cylinder 141 are both electrically connected to the control device. When the sliding frame 142 returns to its original position to complete the reset operation, the second inductive switch 152 is triggered by the inductive plate 153. When the control device receives the detection signal from the second inductive switch 152, it generates a control command and sends it to the control valve of the translation cylinder 141, causing the translation cylinder 141 to stop its retraction action, thus stopping the sliding frame 142 on the lifting frame 112. The second inductive switch 152 can be a photoelectric switch, and the inductive plate 153 can be a steel plate.

[0054] In addition, such as Figure 7 As shown, the lifting trolley device 100 also includes a third inductive switch 154, which is fixedly mounted on the frame 111. The third inductive switch 154 and the control valve of the lifting cylinder 120 are both electrically connected to the control device. When the lifting frame 112 or the lifting frame 113 moves to its designated position, the third inductive switch 154 generates a detection signal, enabling the control device to send a control command to the control valve of the lifting cylinder 120, thus stopping the lifting cylinder 120's extension action and ensuring that the lifting frame 112 and the lifting frame 113 remain stationary at the set height. The third inductive switch 154 can be a photoelectric switch.

[0055] In some embodiments, such as Figure 4 and Figure 7 As shown, the card block 145 is also configured to pull the transport vehicle 200 located on the first guide rail assembly 301 onto the second guide rail assembly 114 when the sliding frame 142 moves in the front-back direction away from the first guide rail assembly 301.

[0056] Understandably, when the transport vehicle 200 moves to one end of the first guide rail assembly 301, the trolley mechanism 140 operates. Specifically, the translation cylinder 141 drives the sliding frame 142 to move linearly in the front-back direction toward the first guide rail assembly 301. During this process, the locking block 145 on the sliding frame 142 will swing due to the downward pressure of the transport vehicle 200, causing the locking block 145 to smoothly engage with the locking hole 260 of the transport vehicle 200. At this time, the translation cylinder 141 stops extending. Then, the movable rod of the translation cylinder 141 drives the sliding frame 142 to move in the opposite direction. At this time, since the locking block 145 engages with the transport vehicle 200, the locking block 145 can push the transport vehicle 200 to move during the reverse movement of the sliding frame 142, causing the transport vehicle 200 to move from the first guide rail assembly 301 to the second guide rail assembly 114.

[0057] When one of the lifting trolley devices 100 pushes the trolley 200 from the second guide rail assembly 114 to the first guide rail assembly 301, the other lifting trolley device 100 pulls the trolley, enabling the trolley 200 to be transferred from the first guide rail assembly 301 to the second guide rail assembly 114. This reduces the workload of the lifting trolley device 100 during the pushing process and helps improve work efficiency.

[0058] In some embodiments, such as Figure 7 , Figure 8 and Figure 11 As shown, the rotary frame device 300 has a first hook 311 and a second hook 312 on both its front and rear sides. Both the first hook 311 and the second hook 312 are fixedly connected to the support frame 302. The first hook 311 is located above the second hook 312, with its opening facing upwards and the second hook 312's opening facing downwards. The first hook 311 can be located below the upper first guide rail assembly 301, and the second hook 312 can be located below the lower first guide rail assembly 301. The number of first hooks 311 and second hooks 312 on the same side of the support frame 302 in the front-rear direction is not limited to one.

[0059] Each lifting frame 112 has a limiting rod 115 on one side of the first guide rail assembly 301 along the front-back direction. Several limiting rods 115 are provided, and each limiting rod 115 is fixedly connected to the lifting frame 112. The length of each limiting rod 115 extends along the left-right direction. Furthermore, the lifting drive assembly is configured to drive the lifting frame 112 to move vertically, so that the limiting rods 115 are engaged with the first hook 311 or the second hook 312, keeping the lifting frame 112 horizontal in the front-back direction.

[0060] In this embodiment, a limiting rod 115 is fixedly provided on the outer side of each second guide rail. The limiting rod 115 is located at one end of the second guide rail near the first guide rail assembly 301 in the front-rear direction, and the limiting rod 115 is a round rod. Correspondingly, the front and rear sides of the support frame 302 are provided with two first hooks 311 and two second hooks 312. When the lifting drive assembly drives the lifting frame 112 to move upward into position, the limiting rod 115 will engage with the first hooks 311 upward; when the lifting drive assembly drives the lifting frame 112 to move downward into position, the limiting rod 115 will engage with the second hooks 312 downward.

[0061] It is understandable that, since multiple transport vehicles 200 are arranged on the first guide rail assembly 301 on both the upper and lower sides, and these multiple transport vehicles 200 are arranged sequentially and closely together, when the lifting trolley device 100 pushes the transport vehicle 200 from the second guide rail assembly 114 onto the first guide rail assembly 301, the translation cylinder 141 of the trolley mechanism 140 experiences a large resistance. At the same time, the lifting frame 112 is prone to swinging in the front-back direction due to the force exerted on it by the translation cylinder 141. Based on this, this embodiment sets a limiting rod 115, a first hook 311, and a second hook 312 to make the limiting rod 115 and the first hook 311 or the second hook 312 form a latching connection, ensuring that the lifting frame 112 maintains a stable horizontal state in the front-back direction, effectively preventing the transfer of the transport vehicle 200 from being affected by the front-back swing of the lifting frame 112.

[0062] In some embodiments, such as Figure 8 , Figure 10 and Figure 11 As shown, the slewing frame device 300 is provided with multiple braking devices on both the front and rear sides. The braking devices are fixed on the support frame 302. Each first guide rail assembly 301 is provided with a braking device below it. Moreover, the braking devices are configured to apply a braking effect to the transport vehicle 200 located on the front and rear sides of the first guide rail assembly 301, so as to prevent the transport vehicle 200 from slipping due to the non-levelness of the first guide rail assembly 301, and to ensure that the transport vehicle 200 has good stability on the first guide rail assembly 301.

[0063] In some examples, only the first brake device 330 or the second brake device 320 may be provided below the first guide rail assembly 301. In other examples, both the first brake device 330 and the second brake device 320 may be provided below the first guide rail assembly 301.

[0064] Specifically, such as Figure 11 As shown, the first braking device 330 includes a first cylinder 331 and a brake shaft 332. The first cylinder 331 is fixedly mounted on the support frame 302, and the movable rod of the first cylinder 331 is fixedly connected to the brake shaft 332. The movable rod of the first cylinder 331 can drive the brake shaft 332 to move linearly, allowing the brake shaft 332 to engage or disengage with the transport vehicle 200. It can be understood that the brake shaft 332 can extend into a groove or through hole provided in the transport vehicle 200 to engage with the transport vehicle 200, thus achieving the braking function; or, the brake shaft 332 can be tightly abutted against a corresponding position on the transport vehicle 200, achieving the braking function through friction.

[0065] In this embodiment, two first braking devices 330 are provided below each first guide rail assembly 301, arranged at intervals in the left-right direction. The movable rod of the first cylinder 331 can drive the brake shaft 332 to move in the up-down direction. Before the lifting trolley device 100 starts pushing the trolley, the first cylinder 331 operates and drives the brake shaft 332 upward, causing the brake shaft 332 to engage with the transport vehicle 200 on the first guide rail assembly 301, preventing the transport vehicle 200 from slipping from the front or rear position of the first guide rail assembly 301. When the lifting trolley device 100 starts pushing the trolley, the first cylinder 331 operates and drives the brake shaft 332 downward, releasing the engagement of the brake shaft 332 with the transport vehicle 200.

[0066] Specifically, such as Figure 10 As shown, the second braking device 320 includes a base 321, a connecting shaft 323, a compression spring 324, and a spring steel plate 322. The base 321 is fixedly connected to the support frame 302. The spring steel plate 322 is arc-shaped when viewed from the left-right direction. One end of the spring steel plate 322 is fixedly connected to the base 321 in the front-back direction. One end of the connecting shaft 323 is engaged with the base 321, and the other end of the connecting shaft 323 is fixedly connected to the other end of the spring steel plate 322. The compression spring 324 is sleeved on the connecting shaft 323, and both ends of the compression spring 324 abut against the base 321 and the spring steel plate 322, respectively. In this embodiment, the connecting shaft 323 is inclined, and its lower end passes through a connecting through hole in the base 321 and is connected to a nut, so that the connecting shaft 323 is engaged with the base 321. Bushings may be provided at both ends of the compression spring 324.

[0067] Understandably, with the operation of the second braking device 320, the spring steel plate 322 can press firmly against the bottom of the transport vehicle 200 under the elastic force of the compression spring 324, thus playing a blocking and braking role. When the lifting trolley device 100 pushes the trolley, the transport vehicle 200 will be subjected to a pushing force, and the bottom of the transport vehicle 200 will exert a downward pressure on the spring steel plate 322. At this time, the compression spring 324 will be compressed, allowing the transport vehicle 200 to pass over the spring steel plate 322 and move linearly along the first guide rail assembly 301.

[0068] In some embodiments, such as Figure 8 and Figure 9As shown, a leveling device is provided above the first guide rail assembly 301 on the upper side. The function of the leveling device is to level the sand table 240 on the transport vehicle 200 with heat-insulating sand. Specifically, the leveling device includes a fixed frame 650, a rotating shaft 630, a sand scraper 620, and a rotating drive assembly. The length of the sand scraper 620 extends in the left-right direction, and the length of the rotating shaft 630 also extends in the left-right direction. The rotating shaft 630 is located above the sand scraper 620, and the upper end of the sand scraper 620 is fixedly connected to the rotating shaft 630. The fixed frame 650 can be fixedly connected to the support frame 302. The left and right ends of the rotating shaft 630 are mounted on the fixed frame 650 through bearing seats, so that the rotating shaft 630 can rotate relative to the fixed frame 650. The output end of the rotary drive assembly is connected to the rotary shaft 630. The rotary drive assembly is configured to drive the rotary shaft 630 to rotate so that the sand scraper 620 can avoid the transport vehicle 200 or scrape the heat-insulating sand in the sand table 240.

[0069] In this embodiment, the leveling device is located on the side of the rotary frame device 300 closer to the loading station in the front-rear direction. The rotary drive assembly includes a second cylinder 610 and a rocker arm 640. One end of the second cylinder 610 is hinged to the fixed frame 650, and the other end of the second cylinder 610 is hinged to one end of the rocker arm 640. The other end of the rocker arm 640 is fixedly connected to the rotating shaft 630. Of course, in other embodiments, it is not excluded that the rotary drive assembly may use a motor or a rotary cylinder to drive the rotating shaft 630 to rotate.

[0070] When the movable rod of the second cylinder 610 extends, the second cylinder 610 drives the rocker arm 640 to rotate the rotating shaft 630 and the sand scraper 620 in the forward direction, so that the sand scraper 620 can rotate to a vertical state, enabling the sand scraper 620 to automatically scrape the heat insulation sand in the sand tray 240 without manual processing, further improving the degree of automation. When the movable rod of the second cylinder 610 retracts, the second cylinder 610 drives the rocker arm 640 to rotate the rotating shaft 630 and the sand scraper 620 in the opposite direction, so that the sand scraper 620 can rotate to a horizontal state (i.e., the sand scraper 620 has been reset), so that the height of the sand scraper 620 is higher than the upper surface of the sand tray 240, which makes it easier for the sand scraper 620 to be removed from the sand tray 240 and to avoid the transport vehicle 200, so that the transport vehicle 200 that has been leveled can pass through the leveling device, and the leveling device can perform heat-insulating sand leveling on the sand tray 240 of the next transport vehicle 200.

[0071] Understandably, before the transport vehicle 200 is transferred from the unloading station to the loading station via the first guide rail assembly 301 on the upper side, the heat-insulating sand in the sand tray 240 on the transport vehicle 200 is leveled by a leveling device, so that the high-temperature sand mold can be directly placed in the sand tray 240 by the robotic arm, so that the heat-insulating sand in the sand tray 240 can surround the high-temperature sand mold.

[0072] In some embodiments, such as Figure 1 , Figure 4 and Figure 5 As shown, a heat insulation cover assembly 400 is provided on at least one side of the loading and unloading stations along the left and right directions, and the heat insulation cover assembly 400 is located on the upper side of the lifting trolley device 100. Specifically, the heat insulation cover assembly 400 includes a bracket 420 and multiple cotton boards 410. The bracket 420 can be fixedly connected to the frame 111. Cotton boards 410 are provided on the front and rear sides, the upper side, and the side away from the lifting trolley device 100 along the left and right directions of the bracket 420. The multiple cotton boards 410 are fixedly connected to the bracket 420 so that the multiple cotton boards 410 together form a heat insulation cavity.

[0073] Understandably, the automated high-temperature casting pre-cooling equipment can be installed in the pit, while the transport vehicle 200 can move the high-temperature sand mold on the lower first guide rail assembly 301, achieving pre-cooling of the high-temperature sand mold and the high-temperature molten metal inside. This ensures that the pre-cooling work proceeds normally and is not affected by external factors. The cotton board 410 uses high-temperature heat-insulating cotton material, and by setting up the heat insulation cover assembly 400, it can isolate the radiant heat of the high-temperature molten metal and the high-temperature sand mold, preventing the radiant heat from affecting other external equipment and personnel, and preventing the high-temperature molten metal from contacting external mechanical equipment or even causing damage.

[0074] In addition, the support frame 302 is provided with a side baffle 303 on at least one side in the left-right direction. The side baffle 303 extends in the front-back direction and is fixedly connected to the support frame 302. The side baffle 303 is located above the first guide rail assembly 301.

[0075] For example, in the stainless steel casting process, high-temperature molten metal is poured into a high-temperature sand mold emerging from the kiln. A robotic arm clamps the high-temperature sand mold into a sand tray 240 on a transport vehicle 200 located at the loading station. Because the sand tray 240 contains insulating sand, it can insulate against the radiant heat of the high-temperature sand mold and provide some insulation, resulting in a relatively gradual pre-cooling rate. Then, the lifting cylinder 120 of the first lifting trolley device 100 operates, driving the lifting frame 112 upwards a certain distance, allowing the second guide rail assembly 114 of the lifting frame 112 to align with the upper first guide rail assembly 301, so that the second guide rail assembly 114 can wait in advance for the transport vehicle 200 containing the high-temperature sand mold to arrive.

[0076] Next, the translation cylinder 141 of the second lifting trolley device 100 operates, driving the sliding frame 142 to move linearly. The sliding frame 142 transfers the transport vehicle 200 on the second guide rail assembly 114 to the upper first guide rail assembly 301, indirectly pushing multiple transport vehicles 200 on the upper first guide rail assembly 301. This drives the transport vehicle 200 carrying the high-temperature sand mold to the second guide rail assembly 114 of the first lifting trolley device 100. Once the transport vehicle 200 carrying the high-temperature sand mold has successfully moved onto the second guide rail assembly 114, the hydraulic cylinder of the first lifting trolley device 100 drives the lifting frame 112 to move the transport vehicle 200 downwards a certain distance, allowing the second guide rail assembly 114 to dock with the lower first guide rail assembly 301. At the same time, the translation cylinder 141 of the second lifting trolley device 100 drives the sliding frame 142 to move in the opposite direction to complete the reset. Then, the lifting cylinder 120 of the second lifting trolley device 100 drives the lifting frame 112 to move down until the second guide rail assembly 114 docks with the lower first guide rail assembly 301, so as to wait for the transport vehicle 200 to arrive.

[0077] Subsequently, the translation cylinder 141 of the first lifting trolley device 100 drives the sliding frame 142 to move linearly, and pushes the transport vehicle 200 carrying the high-temperature sand mold on the second guide rail assembly 114 onto the lower first guide rail assembly 301 through the sliding frame 142, and indirectly pushes multiple transport vehicles 200 on the lower first guide rail assembly 301, thereby driving the transport vehicle 200 close to the second lifting trolley device 100 to be transferred onto the second guide rail assembly 114 of the second lifting trolley device 100.

[0078] Then, the second lifting trolley device 100 operates, lifting the carrier 200 on it and transferring it to the first guide rail assembly 301 on the upper side. At the same time, after completing the trolley pushing work, the first lifting trolley device 100 resets the sliding frame 142 and completes the lifting work of the lifting frame 112 to wait for the arrival of the next carrier 200.

[0079] By performing the above steps, multiple transport vehicles 200 can move along the circulating conveyor line and automatically perform the conveying and pre-cooling operations of high-temperature sand molds containing high-temperature molten metal, without manual intervention. This embodiment uses a hydraulic drive system, which enables controllable rotation speed of the transport vehicles 200 to adapt to different production capacity requirements.

[0080] As the transport vehicle 200 moves from the unloading station towards the loading station along the upper first guide rail assembly 301, a leveling device can be used to insert the sand scraper 620 into the sand tray 240. When the transport vehicle 200 moves linearly along the upper first guide rail assembly 301, the sand scraper 620 can level the insulating sand within the sand tray 240, facilitating the transport vehicle 200's return to the loading station for loading. Additionally, a braking device can be used to apply a braking effect to the transport vehicle 200 on both the front and rear sides of the first guide rail assembly 301, preventing the transport vehicle 200 from slipping due to the first guide rail assembly 301's unevenness.

[0081] Once the pre-cooling of the high-temperature molten metal inside the high-temperature sand mold is completed, the high-temperature sand mold has moved from one side to the other in the front-back direction of the rotary frame device 300 (i.e., from the loading station to the unloading station). Then, the pre-cooled high-temperature sand mold can be removed by a robotic arm, allowing the transport vehicle 200 to continue its cyclical movement along the circular conveyor line.

[0082] Understandably, the high-temperature sand mold can be heated to a suitable temperature in a kiln and then rapidly transported from the kiln to the robotic arm. After grasping the high-temperature sand mold, the robotic arm moves it to the discharge port of the high-temperature furnace so that the high-temperature molten metal can be poured into it. As the high-temperature sand mold moves from the loading station to the unloading station with the transport vehicle 200, both the high-temperature sand mold and the high-temperature molten metal undergo natural room temperature cooling. The high-temperature molten metal emits radiant heat and slowly solidifies from a solution state to a solid state, while an oxide scale forms on its surface. Before being transported to the cooling tank, the robotic arm can send the high-temperature sand mold from the unloading station to a temperature-controlled cooling kiln for cooling treatment.

[0083] When using the high-temperature casting pre-cooling automated equipment provided in this embodiment of the invention, since the two lifting trolley devices 100 located on the front and rear sides of the rotary frame device 300 and the two first guide rail assemblies 301 together form a circular conveyor line, multiple transport vehicles 200 can be arranged on the circular conveyor line. With the cooperation of the two lifting trolley devices 100, each transport vehicle 200 can move in a circular motion along the circular conveyor line in sequence under the action of lifting and pushing.

[0084] Furthermore, for the transport vehicle 200 moving to the loading station, the high-temperature sand mold containing the high-temperature molten metal is placed in the sand tray 240 of the transport vehicle 200. Then, through the lifting action of the corresponding lifting trolley device 100, the transport vehicle 200 and the high-temperature sand mold at the loading station can be moved downward. Then, through the pushing action of the lifting trolley device 100, the transport vehicle 200, which has moved to the position, moves in a straight line along the first guide rail assembly 301 on the lower side, so that the transport vehicle 200 moves to another lifting trolley device 100. Then, using the lifting action of the lifting trolley device 100, the transport vehicle 200 drives the high-temperature sand mold to move upward to the unloading station. During this process, the high-temperature sand mold and the high-temperature molten metal inside can be pre-cooled by natural cooling. After the pre-cooling work, the high-temperature sand mold on the transport vehicle 200 at the unloading station can be taken out and transferred to the cooling box for further cooling.

[0085] By adopting the above-mentioned structural setup in the stainless steel casting production process, not only can high-temperature sand molds containing high-temperature molten metal be stably and continuously transported towards the cooling box, but also the high-temperature sand molds and high-temperature molten metal can be pre-cooled by room temperature cooling, thereby improving the degree of automation and work efficiency, meeting production capacity requirements, and overcoming the problems of high failure rate, high labor costs, large equipment investment and low degree of automation in existing technologies.

[0086] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0087] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An automated pre-cooling device for high-temperature casting, characterized in that, include: A rotary frame device includes two first guide rail assemblies extending in the front-back direction. The two first guide rail assemblies are spaced apart and arranged opposite each other in the vertical direction. The front and rear sides of the first guide rail assembly located on the upper side are respectively provided with loading station and unloading station. A transport vehicle, which has a sand table on its upper part for carrying high-temperature sand molds, and there are multiple transport vehicles, which are configured to travel along the first guide rail assembly; Two lifting trolley devices are provided, respectively located on the front and rear sides of the rotary frame device, so that the two lifting trolley devices and the two first guide rail assemblies together form a circulating conveyor line for moving the transport vehicle. The two lifting trolley devices are configured to drive the transport vehicle to move in the vertical direction and to push the transport vehicle located on the first guide rail assembly in the front-back direction, so as to drive the transport vehicle from the loading station to the unloading station via the first guide rail assembly located on the lower side, and then from the unloading station to the loading station via the first guide rail assembly located on the upper side.

2. The automated pre-cooling equipment for high-temperature casting according to claim 1, characterized in that, The lifting trolley device includes a lifting mechanism and a trolley mechanism. The lifting mechanism includes a frame, a lifting frame, and a lifting drive assembly. The lifting frame is provided with a second guide rail assembly extending in the front-to-back direction. The lifting drive assembly is disposed on the frame and configured to drive the lifting frame to move in the up-down direction so that the second guide rail assembly docks with the corresponding first guide rail assembly. The trolley mechanism is disposed on the lifting frame and configured to push the transport vehicle located on the first guide rail assembly onto the second guide rail assembly, and to push the transport vehicle located on the second guide rail assembly onto the first guide rail assembly.

3. The automated pre-cooling equipment for high-temperature casting according to claim 2, characterized in that, The lifting drive assembly includes lifting cylinders, a lifting frame, sprockets, and chains. Both the lifting frame and the lifting mechanism are slidably connected to the machine frame in a vertical direction. At least two sprockets are provided and rotatably mounted on the lifting frame. Each chain corresponds to one of the sprockets; one end of each chain is fixedly connected to the machine frame, and the other end passes over the corresponding sprocket and is fixedly connected to the lifting frame. At least two lifting cylinders are provided; one end of each cylinder is connected to the machine frame, and the other end is connected to the lifting frame; and / or, The lifting trolley device further includes a first inductive switch, which is disposed on the lifting frame and configured to generate a detection signal when the transport vehicle moves onto the lifting frame. The lifting drive assembly is also configured to drive the lifting frame to move in the vertical direction when the first inductive switch generates a detection signal.

4. The automated pre-cooling equipment for high-temperature casting according to claim 2, characterized in that, The trolley mechanism includes a sliding frame, a translation cylinder, a push block, and a locking block. One end of the translation cylinder is connected to the lifting frame, and the other end is connected to the sliding frame. The translation cylinder is configured to drive the sliding frame to move in the front-back direction. The push block is disposed on the sliding frame and is configured to push the transport vehicle located on the second guide rail assembly onto the first guide rail assembly when the sliding frame moves in the front-back direction toward the first guide rail assembly. The locking block is located on the side of the push block that is close to the first guide rail assembly in the front-back direction and is rotatably disposed on the sliding frame. The rotation axis of the locking block extends in the left-right direction. The locking block is configured to be in an inclined state under the action of gravity and can form a limiting structure with the push block for front-back limiting of the transport vehicle located on the second guide rail assembly.

5. The automated high-temperature casting pre-cooling equipment according to claim 4, characterized in that, Each of the lifting frames is further provided with a third guide rail assembly extending in the front-to-back direction, and the rotating frame device is provided with two fourth guide rail assemblies extending in the front-to-back direction. The two fourth guide rail assemblies are spaced apart and arranged opposite each other in the vertical direction. The lifting drive assembly is further configured to drive the lifting frame to move in the vertical direction so that the third guide rail assembly docks with the corresponding fourth guide rail assembly. Each of the sliding frames has multiple support rollers on its left and right sides, and the support rollers are configured to move back and forth along the third and fourth guide rail assemblies; and / or, The locking block is also configured to pull the transport vehicle located on the first guide rail assembly onto the second guide rail assembly when the sliding frame moves in a forward-backward direction away from the first guide rail assembly.

6. The automated pre-cooling equipment for high-temperature casting according to claim 2, characterized in that, The rotating frame device is provided with a first hook and a second hook on both the front and rear sides. The first hook is located above the second hook, with the opening of the first hook facing upward and the opening of the second hook facing downward. Each lifting frame is provided with several limiting rods on the side of the first guide rail assembly along the front-back direction. The limiting rods extend along the left-right direction. The lifting drive assembly is also configured to drive the lifting frame to move in the up-down direction so that the limiting rods are engaged with the first hook or the second hook, keeping the lifting frame horizontal in the front-back direction.

7. The automated pre-cooling equipment for high-temperature casting according to claim 1, characterized in that, The slewing frame device is provided with multiple braking devices on both the front and rear sides, and each of the first guide rail assemblies is provided with a braking device below it. The braking devices are configured to apply a braking effect to the transport vehicle located on both the front and rear sides of the first guide rail assembly.

8. The automated pre-cooling equipment for high-temperature casting according to claim 7, characterized in that, The braking device includes a first cylinder and a brake shaft. The movable rod of the first cylinder is connected to the brake shaft to drive the brake shaft to move linearly, so that the brake shaft can engage or disengage the vehicle. Alternatively, the braking device includes a base, a connecting shaft, a compression spring, and an arc-shaped spring steel plate. One end of the spring steel plate is connected to the base, one end of the connecting shaft is engaged with the base, and the other end is connected to the other end of the spring steel plate. The compression spring is sleeved on the connecting shaft and abuts against the base and the spring steel plate respectively.

9. The automated pre-cooling equipment for high-temperature casting according to claim 1, characterized in that, A leveling device is provided above the first guide rail assembly located on the upper side. The leveling device includes a rotating shaft, a sand scraper, and a rotating drive assembly. Both the sand scraper and the rotating shaft extend in the left-right direction. The upper end of the sand scraper is fixedly connected to the rotating shaft. The rotating drive assembly is configured to drive the rotating shaft to rotate so that the sand scraper can avoid the transport vehicle or level the heat-insulating sand in the sandbox.

10. The automated pre-cooling equipment for high-temperature casting according to claim 1, characterized in that, The transport vehicle includes a frame, traveling rollers, and dust baffles. Multiple traveling rollers extending axially in the left-right direction are provided on each of the left and right sides of the frame. The sand table is fixedly connected to the upper part of the frame. Dust baffles extending in the front-back direction are also provided on both sides of the frame. The dust baffles are fixedly connected to the lower part of the sand table and are located outside the traveling rollers to provide dust protection for the traveling rollers; and / or, The loading station and the unloading station are provided with a heat insulation cover assembly on at least one side along the left and right direction. The heat insulation cover assembly is located on the upper side of the lifting trolley device. The heat insulation cover assembly includes a bracket and multiple cotton boards. The cotton boards are provided on the front and rear sides, the upper side, and the side away from the lifting trolley device along the left and right direction of the bracket. The multiple cotton boards are fixedly connected to the bracket to form a heat insulation cavity.

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