Large hoisting equipment for alloy casting

Abstract

The invention relates to the technical field of port hoisting, in particular to large alloy casting hoisting equipment which comprises a portal frame and four hoisting steel wire ropes assembled on the portal frame and used for container hoisting. Every two of the four hoisting steel wire ropes form a group, and each group of hoisting steel wire ropes is provided with a limiting mechanism for distance limiting. The limiting mechanism comprises a transmission structure abutting against the middle of the container. According to the invention, the limiting mechanism limits the positions of the hoisting steel wire ropes, so that the direct contact area between the hoisting steel wire ropes and the container is reduced, abrasion or damage caused by friction between the hoisting steel wire ropes and the container is avoided, and the service lives of the steel wire ropes and the container are prolonged; container deviation caused by shaking of the steel wire rope in the lifting process can be reduced, the stability of the lifting process is improved, and the lifting device is particularly suitable for operation with the high precision requirement in a large alloy casting scene.

Description

Technical Field

[0001] The present invention relates to the technical field of port lifting, and particularly relates to a lifting device for large alloy casting. Background Art

[0002] When loading metal parts for large alloy casting in port containers, open-top containers are usually used, also known as open-top containers or open-top cabinets. They have no top and are equipped with a canopy made of canvas, plastic cloth or plastic-coated cloth supported by a foldable top beam. Goods can be loaded and unloaded from the top of the container by a crane. They are suitable for loading heavy goods such as glass plates, steel products, and machinery. The lifting bearing points of this container are at the four outer corners of the container. When this container is hoisted, the hoisting steel wire rope is prone to rubbing against the container, resulting in damage to the container and the steel wire rope.

[0003] Therefore, those skilled in the art have provided a lifting device for large alloy casting to solve the problems raised in the above background art. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides: A lifting device for large alloy casting, comprising: a gantry, and four hoisting steel wire ropes assembled on the gantry for lifting and hoisting containers; Two of the four hoisting steel wire ropes are in a group, and a limiting mechanism for distance limitation is assembled on each group of the hoisting steel wire ropes; The limiting mechanism includes a transmission structure that abuts against the middle of the container, and limiting structures for load-bearing assembly on both sides of the container are symmetrically arranged at both ends of the transmission structure along the middle; The transmission structure actively drives the limiting structures on both sides to adjust the lateral distance of the two hoisting steel wire ropes, and the driven limiting structures move along the transmission structure.

[0005] Preferably: The transmission structure includes a transmission shell, and limiting plates are integrally fixed on both side surfaces of the transmission shell. A lead screw and a rhombic rod are rotatably installed inside the limiting plates; The thread shapes of the lead screws in the two groups of limiting plates are oppositely arranged.

[0006] Preferably: An adjusting rod one rotatably arranged inside the transmission shell is fixedly connected between the lead screws in the two groups of limiting plates, and a second worm is fixedly assembled on the outer wall of each of the two adjusting rods one; An adjusting rod two rotatably arranged inside the transmission shell is fixed between the rhombic rods in the two groups of limiting plates, and a third worm is fixedly installed on the outer wall of each of the two adjusting rods two.

[0007] Preferably, an inner rail plate is fixedly assembled inside the transmission housing, and a moving rail frame is movably arranged inside the inner rail plate. Inner rail balls are rotatably arranged at the upper and lower ends of the moving rail frame corresponding to the position of the inner rail plate. A servo motor is installed inside the moving rail frame. The output end of the servo motor rotatably penetrates outside the moving rail frame and is integrally fixed with a driving rod. A second worm is fixedly installed on the outer wall of the driving rod corresponding to the positions of the second worm gear and the third worm gear.

[0008] Preferably, the limiting structure includes a limiting angle bracket movably sleeved outside the limiting plate. The limiting angle bracket is provided with a limiting hole at the position of the hoisting steel wire rope, and the hoisting steel wire rope is located inside the limiting hole. On both sides of the limiting hole, a first locking roller and a second locking roller are respectively rotatably installed inside the limiting angle bracket. One end of the first locking roller rotatably penetrates inside the limiting angle bracket and is fixedly assembled with a first spur gear. One end of the second locking roller rotatably penetrates inside the limiting angle bracket and is fixedly assembled with a second spur gear. The first spur gear and the second spur gear are meshed with each other. A driven rod is fixedly installed at the center of the second spur gear. A first worm gear is fixed on the outer wall of the driven rod. The first worm gear is meshed with a first worm. One end of the first worm is fixedly connected with an inner shaft rod rotatably arranged inside the limiting angle bracket.

[0009] Preferably, a threaded hole is formed inside the limiting angle bracket, and the lead screw is in screw transmission inside the threaded hole of the limiting angle bracket.

[0010] Preferably, a horizontal sensor is installed on the outer wall of the transmission housing.

[0011] Preferably, a limiting bracket is movably arranged outside the transmission housing, and a screw rod in screw transmission with the transmission housing is rotatably installed inside the limiting bracket.

[0012] Preferably, a load-bearing structure is further included and arranged inside the limiting angle bracket. The load-bearing structure includes an inner assembly plate and an outer assembly plate movably arranged inside the limiting angle bracket. A top assembly plate assembled on the top of the container is fixed at the top end of the inner assembly plate. A bottom assembly plate at the bottom of the container is fixedly assembled at the bottom end of the outer assembly plate.

[0013] Preferably, a plurality of limiting grooves are formed between the inner assembly plate and the outer assembly plate, and locking bolts are spirally locked inside the limiting grooves.

[0014] The technical effects and advantages of the present invention: In the present invention, the limiting mechanism reduces the direct contact area between the hoisting steel wire rope and the container by restricting the position of the hoisting steel wire rope, avoiding wear or damage caused by friction between the two, extending the service life of the steel wire rope and the container. The fixed spacing of the two groups of hoisting steel wire ropes by the limiting mechanism can reduce the offset of the container caused by the shaking of the steel wire rope during the lifting process, improving the stability of the hoisting process, and is particularly suitable for operations with high precision requirements in large alloy casting scenarios.

[0015] In the present invention, the lead screw and the rhombic rod in the transmission structure are driven by a servo motor and a worm and worm gear, which can actively adjust the lateral distance between the two limiting structures to adapt to the hoisting requirements of containers of different sizes, enhancing the versatility of the equipment. The electric telescopic rod drives the moving rail frame to move, enabling the second worm to selectively engage with the second worm wheel or the third worm wheel, realizing the independent drive of a single lead screw or rhombic rod, further precisely controlling the position of the limiting angle bracket, and ensuring hoisting balance. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of a hoisting device for large alloy casting provided by the present application; Figure 2 is a schematic side structural diagram of a hoisting device for large alloy casting provided by the present application; Figure 3 is a schematic front structural diagram of a hoisting device for large alloy casting provided by the present application; Figure 4 is a schematic structural diagram of the hoisting steel wire rope of a hoisting device for large alloy casting provided by the present application; Figure 5 is a schematic structural diagram of the limiting mechanism of a hoisting device for large alloy casting provided by the present application; Figure 6 is a schematic structural diagram of the limiting angle bracket of a hoisting device for large alloy casting provided by the present application; Figure 7 is a hoisting device for large alloy casting provided by the present application Figure 6 schematic structural diagram at C therein; Figure 8 is a schematic structural diagram of the limiting frame of a hoisting device for large alloy casting provided by the present application; Figure 9 is a schematic structural diagram of the load-bearing structure of a hoisting device for large alloy casting provided by the present application; Figure 10 is a hoisting device for large alloy casting provided by the present application Figure 9 schematic structural diagram at B therein; Figure 11 is a hoisting device for large alloy casting provided by the present application Figure 8 schematic structural diagram at A therein.

[0017] In the figure: 1. Gantry 2. Limiting mechanism 21. Limiting structure; 2101. Limiting angle frame; 2102. Limiting hole; 2103. Locking roller 1; 2104. Locking roller 2; 2105. Spur gear 1; 2106. Spur gear 2; 2107. Driven rod; 2108. Worm gear 1; 2109. Worm 1; 2110. Inner shaft rod; 2111. Rubber pad 2; 2112. Screw hole 22. Transmission structure; 2201. Transmission shell; 2202. Inner rail plate; 2203. Shifting rail frame; 2204. Inner rail ball; 2205. Servo motor; 2206. Electric telescopic rod; 2207. Driving rod; 2208. Worm 2; 2209. Adjusting rod 1; 2210. Worm gear 2; 2211. Adjusting rod 2; 2212. Worm gear 3; 2213. Horizontal sensor; 2214. Limiting plate; 2215. Limiting frame; 2216. Screw; 2217. Lead screw; 2218. Rhombic rod 23. Load-bearing structure; 2301. Top assembly plate; 2302. Inner assembly plate; 2303. Bottom assembly plate; 2304. Outer assembly plate; 2305. Locking bolt 3. Hoisting steel wire rope; 4. Container; 5. Hoisting ring; 6. Hoisting buckle; 7. Locking fastener; 8. Rubber pad 1 Specific embodiments

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The examples of the present invention are given for purposes of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application, and to enable those of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for specific purposes.

[0019] Embodiment 1: Please refer to Figures 1 to 4 , in this embodiment, a hoisting device for large alloy casting is provided, including: a gantry 1, and four hoisting steel wire ropes 3 assembled on the gantry 1 for hoisting and lifting a container 4; two of the four hoisting steel wire ropes 3 are in a group, and a limiting mechanism 2 for distance limitation is assembled on each group of the hoisting steel wire ropes 3; The limiting mechanism 2 is used to limit the position of the hoisting steel wire rope 3 when the hoisting steel wire rope 3 cooperates with the gantry 1 to hoist the container 4, reduce the contact between the hoisting steel wire rope 3 and the container 4, which is beneficial to prevent the container 4 and the hoisting steel wire rope 3 from being damaged due to friction, and after the distance between the two groups of hoisting steel wire ropes 3 is limited, the sway of the hoisting steel wire rope 3 during the lifting height and its moving lateral position can be reduced; The limiting mechanism 2 includes a transmission structure 22 that abuts against the middle part of the container 4, and limiting structures 21 for load-bearing assembly on both sides of the container 4 are symmetrically arranged at both ends of the transmission structure 22 along the middle part; the limiting structure 21 is used to limit the hoisting steel wire rope 3 and can actively adjust the tightness between the hoisting steel wire rope 3 and the container 4; The transmission structure 22 actively drives the limiting structures 21 on both sides to adjust the lateral distance between the two hoisting steel wire ropes 3, and the driven limiting structure 21 moves along the transmission structure 22; lifting rings 5 are integrally fixed at the four corners of the bottom of the container 4; the bottom end of the hoisting steel wire rope 3 is integrally fixed with a locking fastener 7, and a hoisting buckle 6 is fixed to the bottom of the locking fastener 7, and a rubber pad 8 for impact buffering is installed on the surface of the locking fastener 7; A large alloy casting lifting device further includes a load-bearing structure 23 arranged inside the limiting angle bracket 2101.

[0020] Embodiment 2: Please refer to Figure 5 、 Figure 7 、 Figure 8 、 Figure 9 , in this embodiment, a transmission structure 22 in a large alloy casting lifting device is provided; The transmission structure 22 includes a transmission housing 2201, and limiting plates 2214 are integrally fixed on both side surfaces of the transmission housing 2201. A lead screw 2217 and a rhombic rod 2218 are rotatably installed inside the limiting plates 2214; the thread shapes of the lead screws 2217 in the two groups of limiting plates 2214 are arranged in opposite directions; An adjusting rod 2209 rotatably arranged inside the transmission housing 2201 is fixedly connected between the lead screws 2217 in the two groups of limiting plates 2214, and a worm gear two 2210 is fixedly assembled on the outer wall of each of the two adjusting rods 2209; the two lead screws 2217 are rotatably arranged inside the transmission housing 2201 through the adjusting rod 2209; An adjusting rod 2211 rotatably arranged inside the transmission housing 2201 is fixedly connected between the rhombic rods 2218 in the two groups of limiting plates 2214, and a worm gear three 2212 is fixedly installed on the outer wall of each of the two adjusting rods 2211; the two rhombic rods 2218 are rotatably arranged inside the transmission housing 2201 through the adjusting rod 2211; Inside the transmission housing 2201, an inner rail plate 2202 is fixedly assembled, and a moving rail frame 2203 is movably arranged inside the inner rail plate 2202. Inner rail balls 2204 are rotatably arranged at the positions corresponding to the inner rail plate 2202 at the upper and lower ends of the moving rail frame 2203; the moving rail frame 2203 is slidably restricted inside the inner rail plate 2202 through the inner rail balls 2204; A servo motor 2205 is installed inside the moving rail frame 2203, and the output end of the servo motor 2205 rotates through the outside of the moving rail frame 2203 and is integrally fixed with a driving rod 2207. A second worm 2208 is fixedly installed on the outer wall of the driving rod 2207 at the positions corresponding to the second worm gear 2210 and the third worm gear 2212; An electric telescopic rod 2206 is installed between the moving rail frame 2203 and the transmission housing 2201; After the electric telescopic rod 2206 is started, it can horizontally move the servo motor 2205 inside the moving rail frame 2203 to adjust the position of the second worm 2208 to the second worm gear 2210 or the third worm gear 2212.

[0021] Embodiment 3: Please refer to Figure 5 、 Figure 6 、 Figure 7 、 Figure 11 , in this embodiment, a limiting structure 21 in a large alloy casting lifting device is provided; The limiting structure 21 includes a limiting angle bracket 2101 movably sleeved outside the limiting plate 2214. A limiting hole 2102 is opened at the position of the limiting angle bracket 2101 where the hoisting steel wire rope 3 is located, and the hoisting steel wire rope 3 is located inside the limiting hole 2102; the hoisting steel wire rope 3 is movably arranged inside the limiting angle bracket 2101 through the limiting hole 2102; On both sides of the limiting hole 2102, a first locking roller 2103 and a second locking roller 2104 are respectively rotatably installed inside the limiting angle bracket 2101; the first locking roller 2103 and the second locking roller 2104 are used to lock and limit the hoisting steel wire rope 3, and when the first locking roller 2103 and the second locking roller 2104 rotate in opposite directions, the hoisting steel wire rope 3 can be stretched and moved; One end of the first locking roller 2103 rotates through the inside of the limiting angle bracket 2101 and is fixedly assembled with a first spur gear 2105, and one end of the second locking roller 2104 rotates through the inside of the limiting angle bracket 2101 and is fixedly assembled with a second spur gear 2106. The first spur gear 2105 and the second spur gear 2106 are meshed with each other; a driven rod 2107 is fixedly installed at the center of the second spur gear 2106, and a first worm gear 2108 is fixed to the outer wall of the driven rod 2107. The first worm gear 2108 is meshed with a first worm 2109, and one end of the first worm 2109 is fixedly connected to an inner shaft rod 2110 rotatably arranged inside the limiting angle bracket 2101; After the inner shaft rod 2110 rotates, it drives the first worm 2109 to rotate. The first worm 2109 meshes with the first worm gear 2108 to rotate. The rotating first worm gear 2108 drives the first spur gear 2105 to rotate, so that the first spur gear 2105 meshes with the second spur gear 2106. The locking roller one 2103 and the locking roller two 2104 that rotate in opposite directions lock and move the hoisting steel wire rope 3 for adjustment; A screw hole 2112 is formed inside the limiting angle bracket 2101, and the lead screw 2217 is in screw drive inside the screw hole 2112 of the limiting angle bracket 2101; the lead screw 2217 rotates the adjusting rod one 2209 through the second worm 2208 driven by the servo motor 2205, so that the adjusting rod one 2209 drives the lead screw 2217 to screw drive inside the screw hole 2112 of the limiting angle bracket 2101, so that the limiting angle bracket 2101 moves along the lead screw 2217 inside the inner side of the limiting plate 2214 through the screw hole 2112, which is beneficial to the position adjustment of the limiting angle bracket 2101; A horizontal sensor 2213 is installed on the outer wall of the transmission housing 2201; the horizontal sensor 2213 is used to detect the horizontal positions at both ends of the transmission housing 2201, and cooperate with the limiting structure 21 and the transmission structure 22 for separate drive settings; A limiting frame 2215 is movably arranged outside the transmission housing 2201, and a screw rod 2216 that is in screw drive with the transmission housing 2201 is rotatably installed inside the limiting frame 2215; a hand rod is fixedly arranged on the outer side of the screw rod 2216, and the screw rod 2216 is rotated manually by rotating the hand rod. The rotating screw rod 2216 screws along the transmission housing 2201, and the distance between the limiting frame 2215 and the container 4 can be adjusted.

[0022] Embodiment 4: Please refer to Figure 5 、 Figure 9 , in this embodiment, a load-bearing structure 23 in a large alloy casting hoisting device is provided; The load-bearing structure 23 includes an inner assembly plate 2302 movably arranged inside the limiting angle bracket 2101, and an outer assembly plate 2304; a top assembly plate 2301 assembled on the top of the container 4 is fixed at the top of the inner assembly plate 2302; a bottom assembly plate 2303 assembled at the bottom of the container 4 is fixedly assembled at the bottom of the outer assembly plate 2304; A number of limiting grooves are formed between the inner assembly plate 2302 and the outer assembly plate 2304, and a locking bolt 2305 is spirally locked inside the limiting groove; the two groups of second worm wheels 2210 and the two groups of third worm wheels 2212 are arranged in an interlaced manner. By controlling the extension length of the electric telescopic rod 2206, the moving track frame 2203 can move along the inner track plate 2202 through the inner track ball 2204, so that the second worm 2208 on its driving rod 2207 moves onto a single second worm wheel 2210 or a single third worm wheel 2212 and meshes with it, which is beneficial to rotating a single lead screw 2217 or a single rhombic rod 2218. A second rubber pad 2111 is fixedly assembled at the bottom position of the limiting hole 2102 of the limiting angle bracket 2101; the position of the second rubber pad 2111 is the same as that of the first rubber pad 8. When the lifting ring 5 of the container 4 is damaged during the lifting process, the lifting buckle 6 directly drops to the position of the limiting angle bracket 2101 through the lifting steel wire rope 3 and is buffered by the second rubber pad 2111 assembled on the limiting angle bracket 2101, which has a secondary protection effect and reduces the accident of the container 4 at a high place due to the damage of the lifting ring 5.

[0023] According to the above embodiments, the working principle of the present invention is as follows: In the initial state, the four lifting steel wire ropes 3 are divided into two groups (two in each group) and are connected to the lifting rings 5 at the four corners of the bottom of the container 4 through the locking fasteners 7 and the lifting buckles 6. The transmission structure 22 of the limiting mechanism 2 is located in the middle of the container 4. The limiting angle brackets 2101 of the two side limiting structures 21 are sleeved on the limiting plate 2214. The lifting steel wire ropes 3 pass through the limiting holes 2102 and are initially limited by the first locking roller 2103 and the second locking roller 2104. The lifting rings 5 at the four corners of the bottom of the container 4 are connected to the locking fasteners 7 at the bottom of the lifting steel wire ropes 3 through the lifting buckles 6, realizing the fixation of the container 4 and the lifting equipment. The first rubber pad 8 on the surface of the locking fastener 7 can buffer the impact force during the lifting process and reduce wear. The gantry 1 drives the lifting steel wire ropes 3 to move up and down through the lifting mechanism, realizing the lifting and lowering of the container 4. The four lifting steel wire ropes 3 are divided into two groups, and each group restricts the lateral distance through the limiting mechanism 2, reducing the sway during lifting. The core function of the limiting mechanism 2 is to adjust the lateral distance of the lifting steel wire ropes 3, reduce the friction with the container 4, and achieve active control through the transmission structure 22 and the limiting structure 21. The servo motor 2205 is installed in the moving track frame 2203, and a second worm 2208 is fixed on the driving rod 2207 at its output end. Start the servo motor 2205, and the driving rod 2207 at its output end drives the second worm 2208 to rotate. Adjust the position of the moving rail frame 2203 through the electric telescopic rod 2206, so that the second worm 2208 meshes with the second worm gear 2210 or the third worm gear 2212, and then drives the first adjusting rod 2209 (connected to the lead screw 2217) or the second adjusting rod 2211 (connected to the rhombic rod 2218) to rotate. The electric telescopic rod 2206 can push the moving rail frame 2203 to move horizontally on the inner rail plate 2202, so that the second worm 2208 selectively meshes with the second worm gear 2210 (corresponding to the lead screw 2217) or the third worm gear 2212 (corresponding to the rhombic rod 2218). The thread directions of the lead screws 2217 in the two groups of limiting plates 2214 are opposite. When the servo motor 2205 drives the lead screw 2217 to rotate, the two side limiting structures 21 will move synchronously towards the middle or both sides, adjusting the horizontal distance between the two groups of hoisting steel wires 3; The rhombic rod 2218 is used to assist the movement of the limiting structure 21 to ensure the translation stability; The horizontal sensors 2213 on the outer wall of the transmission housing 2201 monitor the level at both ends in real time. If there is a deviation, fine adjustment can be carried out by separately driving the lead screw 2217 or the rhombic rod 2218. In addition, the distance between the limiting frame 2215 and the container 4 can be manually adjusted by the screw 2216 to adapt to special working conditions; Due to the reverse threads of the two groups of lead screws 2217, when rotating, they drive the two side limiting angle brackets 2101 to approach or move away symmetrically, adjusting the horizontal distance between the two hoisting steel wires 3 in the same group. The rhombic rod 2218 cooperates with the limiting angle bracket 2101 through the limiting hole to provide the guiding force for the horizontal movement, ensuring the smoothness of the adjustment process; Application scenario: According to the size of the container 4, adjust the distance between the two groups of steel wires through the above transmission, so that the hoisting force is evenly distributed, avoiding shaking caused by too large a distance or friction caused by too small a distance; The limiting angle bracket 2101 is sleeved outside the limiting plate 2214, and the limiting hole 2102 inside it catches the hoisting steel wire 3; The first locking roller 2103 and the second locking roller 2104 are meshed with the first spur gear 2105 and the second spur gear 2106. When the inner shaft rod 2110 drives the first worm 2109 to rotate, the two rollers rotate towards each other, and can clamp or loosen the steel wire to adjust its tension; The first locking roller 2103 and the second locking roller 2104 are meshed with the first spur gear 2105 and the second spur gear 2106 to achieve opposite rotation. When it is necessary to adjust the tightness of the steel wire, rotate the inner shaft rod 2110, drive the first worm gear 2108 through the first worm 2109, drive the spur gear group to rotate, so that the locking roller clamps or releases the steel wire, realizing active stretching or relaxation, and adapting to the tension fluctuation caused by the height change during the hoisting process; The horizontal sensor 2213 monitors the horizontal state of the transmission housing 2201 in real time. If it detects an inclination, the system automatically adjusts the rotation speed of the single-side lead screw 2217 or the rhombic rod 2218, and corrects the attitude of the container 4 by independently driving the single-side limiting structure 21 to ensure the hoisting balance; The rubber pad two 2111 at the bottom of the limiting hole 2102 and the rubber pad one 8 of the locking fastener 7 form a double buffer; if the lifting ring 5 breaks and the lifting buckle 6 drops to the limiting angle bracket 2101, the rubber pad two 2111 can absorb the impact force and prevent the container 4 from falling; The load-bearing structure 23 connects the top (top assembly plate 2301) and the bottom (bottom assembly plate 2303) of the container 4 to the limiting angle bracket 2101 through the inner assembly plate 2302 and the outer assembly plate 2304; the two are fixed through the limiting groove and the locking bolt 2305 to disperse the load-bearing pressure during the lifting process and enhance the overall stability.

[0024] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art and related fields based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention, unless otherwise specified and limited, are implemented according to the conventional means in the art.

Claims

1. A hoisting device for large alloy casting, including a gantry (1) and four hoisting steel wires (3) assembled on the gantry (1) for hoisting and lifting a container (4). It is characterized in that, It further includes: Two of the four hoisting steel wires (3) are in a group, and a limiting mechanism (2) for distance limitation is assembled on each group of the hoisting steel wires (3); The limiting mechanism (2) includes a transmission structure (22) that abuts against the middle part of the container (4), and limiting structures (21) for load-bearing assembly on both sides of the container (4) are symmetrically arranged at both ends of the transmission structure (22) along the middle part; The transmission structure (22) actively drives the limiting structures (21) on both sides to adjust the lateral distance of the two hoisting steel wires (3), and the driven limiting structure (21) moves along the transmission structure (22).

2. The lifting equipment for large alloy casting according to claim 1, characterized in that, The transmission structure (22) includes a transmission shell (2201), and limiting plates (2214) are integrally fixed on both side surfaces of the transmission shell (2201). A lead screw (2217) and a rhombic rod (2218) are rotatably installed inside the limiting plates (2214); The thread shapes of the lead screws (2217) in the two groups of limiting plates (2214) are arranged in the opposite direction.

3. The lifting equipment for large alloy casting according to claim 2, characterized in that, Adjusting rods one (2209) rotatably arranged inside the transmission shell (2201) are respectively fixedly connected between the lead screws (2217) in the two groups of limiting plates (2214), and worm wheels two (2210) are fixedly assembled on the outer walls of the two adjusting rods one (2209); Adjusting rods two (2211) rotatably arranged inside the transmission shell (2201) are respectively fixed between the rhombic rods (2218) in the two groups of limiting plates (2214), and worm wheels three (2212) are fixedly installed on the outer walls of the two adjusting rods two (2211).

4. A hoisting device for large alloy casting according to claim 3, characterized in that, An inner rail plate (2202) is fixedly assembled inside the transmission shell (2201), and a moving rail frame (2203) is movably arranged inside the inner side of the inner rail plate (2202). Inner rail balls (2204) are rotatably arranged at the upper and lower ends of the moving rail frame (2203) corresponding to the positions of the inner rail plate (2202); A servo motor (2205) is installed inside the moving rail frame (2203), and the output end of the servo motor (2205) rotates through the outside of the moving rail frame (2203) and is integrally fixed with a driving rod (2207). A worm two (2208) is fixedly installed on the outer wall of the driving rod (2207) corresponding to the positions of the worm wheel two (2210) and the worm wheel three (2212).

5. A hoisting device for large alloy casting according to claim 3, characterized in that, The limiting structure (21) includes a limiting angle frame (2101) movably sleeved outside the limiting plate (2214). A limiting hole (2102) is opened at the position of the limiting angle frame (2101) where the hoisting steel wire (3) is located, and the hoisting steel wire (3) is located inside the limiting hole (2102); On both sides of the limiting hole (2102), a locking roller one (2103) and a locking roller two (2104) rotatably installed inside the limiting angle frame (2101) are respectively arranged; One end of the locking roller one (2103) rotates through the inside of the limiting angle bracket (2101), and a first spur gear (2105) is fixedly assembled. One end of the locking roller two (2104) rotates through the inside of the limiting angle bracket (2101), and a second spur gear (2106) is fixedly assembled. The first spur gear (2105) and the second spur gear (2106) are meshed with each other; A driven rod (2107) is fixedly installed at the center of the circle of the second spur gear (2106). A first worm wheel (2108) is fixed to the outer wall of the driven rod (2107). The first worm wheel (2108) is meshed with a first worm (2109). One end of the first worm (2109) is fixedly connected to an inner shaft rod (2110) rotatably arranged inside the limiting angle bracket (2101).

6. A hoisting device for large alloy casting according to claim 5, characterized in that, A screw hole (2112) is formed inside the limiting angle bracket (2101), and the lead screw (2217) is in screw drive inside the screw hole (2112) of the limiting angle bracket (2101).

7. A lifting device for large alloy casting according to claim 4, characterized in that, A horizontal sensor (2213) is installed on the outer wall of the transmission housing (2201).

8. A lifting device for large alloy casting according to claim 7, characterized in that, A limiting frame (2215) is movably arranged outside the transmission housing (2201), and a screw rod (2216) in screw drive with the transmission housing (2201) is rotatably installed inside the limiting frame (2215).

9. A hoisting device for large alloy casting according to claim 5, characterized in that, It further includes a load-bearing structure (23) arranged inside the limiting angle bracket (2101); The load-bearing structure (23) includes an inner assembly plate (2302) and an outer assembly plate (2304) movably arranged inside the limiting angle bracket (2101); A top assembly plate (2301) assembled on the top of the container (4) is fixed to the top of the inner assembly plate (2302); A bottom assembly plate (2303) at the bottom of the container (4) is fixedly assembled to the bottom of the outer assembly plate (2304).

10. A lifting device for large alloy casting according to claim 9, characterized in that, A plurality of limiting grooves are formed between the inner assembly plate (2302) and the outer assembly plate (2304), and locking bolts (2305) are spirally locked inside the limiting grooves.

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