Lifting mechanism of constant-current casting hoisting equipment

Abstract

The utility model relates to the technical field of lifting mechanisms, in particular to a lifting mechanism of constant-current casting hoisting equipment, which comprises a guide groove, first support frames are fixedly mounted on the bottom surfaces of two ends of the guide groove, first hydraulic cylinders are arranged on the bottom surfaces of the first support frames, and telescopic ends of the first hydraulic cylinders are connected to the centers of the bottom surfaces of the first support frames; a second supporting frame is arranged in the middle of the rear surface of the guide groove, a guide assembly is arranged on the inner wall of the guide groove, and a first lifting hook fixed to the surface of the guide assembly is arranged on the bottom face of the guide groove. Through the arrangement of the first hydraulic cylinder, the first lifting hook, the second hydraulic cylinder, the lifting ring and the second lifting hook, a steel ladle for casting can be lifted from the top end and the bottom end, the steel ladle is pulled to be obliquely cast in a one-end-down and one-end-up trend through lifting and descending of the first hydraulic cylinder in cooperation with the second hydraulic cylinder, and compared with direct inclination of a lifting appliance, the stability is improved; and in a high-low pulling and restraining state, slow casting can be achieved, and sputtering is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting mechanisms, in particular to a lifting mechanism of constant flow casting lifting equipment. Background Art

[0002] In the die casting process, casting speed is one of the key technical indicators. Casting speed affects the surface quality of the steel ingot. Fluctuation of casting speed will cause defects such as slag rolls on the surface of the steel ingot and shrinkage holes in the center of longitudinal cracks. In order to ensure the stability of the quality of the steel ingot, the flow rate of molten steel during casting is required to be stable, and the rising speed of molten steel in the ladle is required to be stable. In the existing casting process, the lifting mechanism is combined with binocular vision technology to identify the movement posture of the ladle, and the rotation angle change of the ladle is obtained in real time, so as to calculate the pouring amount change of the ladle. At the same time, load sensors and angle encoders are used to measure the load of each hanging point. The load value and the number of rotations of the wire rope drum are measured, and the collected information is transmitted to the PLC control unit. The speed of the lifting mechanism is compensated according to the measured value, and the synchronous lifting technology of multiple lifting points is developed to finally achieve constant flow pouring in the casting process. However, in the die casting process, the existing lifting device generally uses a hanger to directly pour out metal chips, which is prone to insufficient stability, causing the ladle to shake, and then there will be a safety hazard of molten steel splashing accidents during the dumping process, which will also affect the quality of subsequent steel ingots. For this reason, we propose a lifting mechanism for constant flow casting lifting equipment. Utility Model Content

[0003] In view of the above problems, the utility model provides a lifting mechanism of a constant current casting lifting equipment, which has the advantages of improving casting stability and avoiding sputtering.

[0004] The technical solution of the utility model is:

[0005] The lifting mechanism of a constant flow casting lifting equipment comprises a guide groove, the bottom surfaces of both ends of the guide groove are fixedly installed with a first support frame, the bottom surface of the first support frame is provided with a first hydraulic cylinder, the telescopic end of the first hydraulic cylinder is connected to the center of the bottom surface of the first support frame, a second support frame is provided in the middle of the rear surface of the guide groove, a sliding component with the same length as the guide groove is provided at the bottom end of the second support frame, a guide component is provided on the inner wall of the guide groove, a first hook fixed on the surface of the guide component is provided on the bottom surface of the guide groove, two second hydraulic cylinders are provided on the side surface of the second support frame facing the guide groove, a connecting rod is fixedly installed on the top surface of the telescopic end of the second hydraulic cylinder, a balancing frame is fixedly installed between the ends of the two connecting rods, a lifting ring is fixedly installed in the middle of the surface of the balancing frame, and a second hook is fixedly installed on the bottom end of the lifting ring.

[0006] In a further technical solution, a first counterweight block and a second counterweight block are fixedly mounted on the bottom ends of the first hydraulic cylinder and the second support frame, respectively, and a connecting plate is fixedly mounted between the top end of the second support frame and the guide groove.

[0007] In a further technical solution, the sliding assembly includes a balance plate, a support block, a sliding rod, a bearing seat, a threaded shaft, a stepping motor, a threaded hole, and a sliding mouth. A balance plate is provided on the bottom surface of the second counterweight block, and the balance plate is consistent in length with the guide groove. Two opposite support blocks are fixedly installed on one side of the top surface of the balance plate, and two opposite bearing seats are provided on one side of the support block, and the bearing seats are fixed on the top surface of the balance plate. A sliding rod is fixedly installed between the two support blocks, and a threaded shaft is rotatably engaged between the two bearing seats. A stepping motor is provided at the end of one of the threaded shafts, and the housing of the stepping motor is fixedly connected to a side wall of one end of the balance plate, and the output end of the stepping motor is rotatably engaged with the threaded shaft. A side wall of the second counterweight block is provided with threaded holes and a sliding mouth that are relatively arranged, the threaded holes are threadedly engaged with the threaded shaft, and the sliding mouth is slidably engaged with the sliding rod.

[0008] In a further technical solution, the guide assembly includes a threaded rod, a servo motor, a slider, a threaded opening, a guide opening, and a protrusion. The two ends of the inner wall of the guide groove are rotatably engaged with the threaded rod through bearings. A servo motor is provided on the outer wall of one end of the guide groove. The output end of the servo motor is rotatably engaged with the threaded rod. The inner wall of the guide groove is slidably engaged with a slider. A threaded opening is provided on the surface of the slider, and the threaded opening is threadably engaged with the threaded rod. A guide opening is provided at the center of the bottom surface of the guide groove, and the guide opening is communicated with the inside of the guide groove. The inner wall of the guide opening is slidably connected with a protrusion. The first hook is fixed to the bottom surface of the protrusion, and the top surface of the protrusion is fixedly connected to the center of the bottom surface of the slider.

[0009] In a further technical solution, the first support frame and the second support frame are both welded from a plurality of stainless steel rods, and the first support frame and the second support frame are both square.

[0010] In a further technical solution, two oppositely disposed metal sleeves are fixedly mounted on a side of the second support frame facing the guide groove, and the housing of the second hydraulic cylinder is fixed to the inner wall of the metal sleeve.

[0011] The beneficial effects of the utility model are:

[0012] By arranging the first hydraulic cylinder, the first hook, the second hydraulic cylinder, the lifting ring and the second hook, the ladle for casting can be lifted from the top and the bottom. The first hydraulic cylinder is raised and lowered in coordination with the second hydraulic cylinder to pull the ladle for tilted casting with one end up and one end down. Compared with direct tilting of the lifting device, the stability is improved, and in the high and low pulling and restraining state, slow casting can be performed to avoid splashing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0014] Figure 2 It is a rear view structural schematic diagram of an embodiment of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the guide groove of the embodiment of the utility model;

[0016] Figure 4 It is a structural schematic diagram of the second support frame of an embodiment of the utility model.

[0017] Description of reference numerals:

[0018] 1. Guide groove; 2. First support frame; 3. First hydraulic cylinder; 4. Second support frame; 5. Connecting plate; 6. First hook; 7. Metal sleeve; 8. Second hydraulic cylinder; 9. Connecting rod; 10. Balance frame; 11. Lifting ring; 12. Second hook; 13. First counterweight; 131. Second counterweight; 14. Threaded rod; 15. Servo motor; 16. Slider; 17. Threaded mouth; 18. Guide mouth; 19. Bump; 20. Balance plate; 21. Support block; 22. Sliding rod; 23. Bearing seat; 24. Threaded shaft; 25. Stepper motor; 26. Threaded hole; 27. Sliding mouth. DETAILED DESCRIPTION

[0019] The embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.

[0020] Example:

[0021] like Figure 1-Figure 4As shown, a lifting mechanism of a constant flow casting lifting equipment comprises a guide groove 1, a first support frame 2 is fixedly installed on the bottom surfaces of both ends of the guide groove 1, a first hydraulic cylinder 3 is arranged on the bottom surface of the first support frame 2, a telescopic end of the first hydraulic cylinder 3 is connected to the center of the bottom surface of the first support frame 2, a second support frame 4 is arranged in the middle of the rear surface of the guide groove 1, and the first support frame 2 and the second support frame 4 are welded by a plurality of stainless steel rods, and the first support frame 2 and the second support frame 4 are both square, a threaded rod 14 is rotatably matched with the two ends of the inner wall of the guide groove 1 through bearings, a servo motor 15 is arranged on the outer wall of one end of the guide groove 1, the output end of the servo motor 15 is rotatably matched with the threaded rod 14, a slider 16 is slidably matched with the inner wall of the guide groove 1, and the slider 16 A threaded opening 17 is provided on the surface of the guide groove 1, and the threaded opening 17 is threadedly matched with the threaded rod 14. A guide opening 18 is provided at the center of the bottom surface of the guide groove 1, and the guide opening 18 is communicated with the inside of the guide groove 1. A protrusion 19 is slidably connected to the inner wall of the guide opening 18, and the top surface of the protrusion 19 is fixedly connected to the center of the bottom surface of the slider 16. The bottom surface of the protrusion 19 is connected to the first hook 6 through a metal ring, which is convenient for using the first hook 6. Two second hydraulic cylinders 8 are provided on the side of the second support frame 4 facing the guide groove 1. Two relatively arranged metal sleeves 7 are fixedly installed on the side of the second support frame 4 facing the guide groove 1. The housing of the second hydraulic cylinder 8 is fixed to the inner wall of the metal sleeve 7. A connecting rod 9 is fixedly installed on the top surface of the telescopic end of the second hydraulic cylinder 8. The two connecting rods 9 A balancing frame 10 is fixedly installed between the ends of the balancing frame 10, a lifting ring 11 is fixedly installed in the middle of the surface of the balancing frame 10, and a second hook 12 is fixedly installed at the bottom end of the lifting ring 11. The first hydraulic cylinder 3 and the bottom end of the second support frame 4 are respectively fixedly installed with a first counterweight block 13 and a second counterweight block 131. A connecting plate 5 is fixedly installed between the top end of the second support frame 4 and the guide groove 1. By arranging the first counterweight block 13 and the connecting plate 5, the balance stability of the overall use can be improved. A balancing plate 20 is provided on the bottom surface of the second counterweight block 131, and the length of the balancing plate 20 is consistent with that of the guide groove 1. Two opposing support blocks 21 are fixedly installed on one side of the top surface of the balancing plate 20, and two opposing bearing seats 23 are provided on one side of the support block 21, and the bearing seat 23 is fixedly installed on the bottom surface of the balancing plate 20. Fixed on the top surface of the balance plate 20, a slide bar 22 is fixedly installed between the two support blocks 21, and a threaded shaft 24 is rotatably fitted between the two bearing seats 23. A stepper motor 25 is provided at the end of one of the threaded shafts 24. The housing of the stepper motor 25 is fixedly connected to one end side wall of the balance plate 20, and the output end of the stepper motor 25 is rotatably fitted with the threaded shaft 24. A side wall of the second counterweight block 131 is provided with threaded holes 26 and sliding openings 27 that are relatively arranged. The threaded holes 26 are threadedly fitted with the threaded shaft 24, and the sliding openings 27 are slidably fitted with the slide bar 22. By setting the bottom structure of the second support frame 4, the second support frame 4 can be used synchronously with the guide groove 1, which facilitates the synchronous movement of the first hook 6 and the second hook 12 to keep the ladle stable.

[0022] The working principle of the above technical solution is as follows:

[0023] When the device needs to be used in conjunction with casting, the top of the ladle cooperates with the first hook 6, and the bottom cooperates with the second hook 12, and then the servo motor 15 and the stepper motor 25 are driven in sequence. The drive of the servo motor 15 can make the threaded rod 14 rotate, and the rotation of the threaded rod 14 can make the slider 16 move horizontally on the inner wall of the guide groove 1, so that the protrusion 19 can slide on the inner wall of the guide opening 18, so that the first hook 6 moves with the ladle, and the drive of the stepper motor 25 can make the threaded shaft 24 rotate and threadably cooperate with the second counterweight block 131, and similarly make the sliding opening 27 on the surface of the second counterweight block 131 slide on the surface of the sliding rod 22, so that the second support frame 4 and the slider 16 move synchronously. The effect of movement can keep the ladle moving smoothly. When the molten metal in the ladle needs to be discharged, the first hydraulic cylinder 3 is driven to contract. During the process, the guide groove 1 moves downward first, and then the second hydraulic cylinder 8 is raised to let the second hook 12 pull the bottom end of the ladle to tilt upward, in a state of one end moving downward and the other end moving upward, and slowly pouring the molten metal in the ladle to avoid the situation where the molten metal suddenly dumps and splashes due to a large amplitude. The setting of the device can cooperate to pull the ladle up and down to improve the stability during casting. At the same time, the first hook 6 and the second hook 12 have the effect of facilitating material collection. According to actual needs, multiple second hooks 12 can be installed on the surface of the balance frame 10 with the lifting ring 11 to improve stability.

[0024] The above embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A lifting mechanism of a constant flow casting lifting device, comprising a guide groove (1), characterized in that: A first support frame (2) is fixedly mounted on the bottom surfaces of both ends of the guide groove (1); a first hydraulic cylinder (3) is arranged on the bottom surface of the first support frame (2); a telescopic end of the first hydraulic cylinder (3) is connected to the center of the bottom surface of the first support frame (2); a second support frame (4) is arranged in the middle of the rear surface of the guide groove (1); a sliding assembly of the same length as the guide groove (1) is arranged at the bottom end of the second support frame (4); a guide assembly is arranged on the inner wall of the guide groove (1); a first hook (6) fixed on the surface of the guide assembly is arranged on the bottom surface of the guide groove (1); two second hydraulic cylinders (8) are arranged on a side surface of the second support frame (4) facing the guide groove (1); a connecting rod (9) is fixedly mounted on the top surface of the telescopic end of the second hydraulic cylinder (8); a balancing frame (10) is fixedly mounted between the ends of the two connecting rods (9); a lifting ring (11) is fixedly mounted in the middle of the surface of the balancing frame (10); and a second lifting hook (12) is fixedly mounted on the bottom end of the lifting ring (11).

2. The lifting mechanism of the constant flow casting lifting equipment according to claim 1 is characterized in that: A first counterweight (13) and a second counterweight (131) are fixedly mounted on the bottom ends of the first hydraulic cylinder (3) and the second support frame (4), respectively, and a connecting plate (5) is fixedly mounted between the top end of the second support frame (4) and the guide groove (1).

3. The lifting mechanism of the constant flow casting lifting equipment according to claim 2 is characterized in that: The sliding assembly comprises a balance plate (20), a support block (21), a slide rod (22), a bearing seat (23), a threaded shaft (24), a stepping motor (25), a threaded hole (26), and a sliding port (27). The bottom surface of the second counterweight block (131) is provided with a balance plate (20), and the balance plate (20) is consistent in length with the guide groove (1). Two opposite support blocks (21) are fixedly installed on one side of the top surface of the balance plate (20). Two opposite bearing seats (23) are provided on one side of the support block (21), and the bearing seats (23) are fixed on the top surface of the balance plate (20). A slide bar (22) is fixedly installed between the two bearing seats (23), a threaded shaft (24) is rotatably fitted between the two bearing seats (23), a stepper motor (25) is provided at the end of one of the threaded shafts (24), a housing of the stepper motor (25) is fixedly connected to a side wall of one end of the balance plate (20), an output end of the stepper motor (25) is rotatably fitted with the threaded shaft (24), a side wall of the second counterweight block (131) is provided with a threaded hole (26) and a sliding opening (27) which are arranged opposite to each other, the threaded hole (26) is threadably fitted with the threaded shaft (24), and the sliding opening (27) is slidably fitted with the slide bar (22).

4. The lifting mechanism of the constant flow casting lifting equipment according to claim 1 is characterized in that: The guide assembly comprises a threaded rod (14), a servo motor (15), a slider (16), a threaded opening (17), a guide opening (18), and a protrusion (19); the threaded rod (14) is rotatably matched at both ends of the inner wall of the guide groove (1) through bearings; a servo motor (15) is provided on the outer wall of one end of the guide groove (1); the output end of the servo motor (15) is rotatably matched with the threaded rod (14); the inner wall of the guide groove (1) is slidably matched with a slider (16); A threaded opening (17) is provided on the surface of the block (16), and the threaded opening (17) is threadably matched with the threaded rod (14). A guide opening (18) is provided at the center of the bottom surface of the guide groove (1), and the guide opening (18) is communicated with the inside of the guide groove (1). A protrusion (19) is slidably connected to the inner wall of the guide opening (18), and the first hook (6) is fixed to the bottom surface of the protrusion (19), and the top surface of the protrusion (19) is fixedly connected to the center of the bottom surface of the slider (16).

5. The lifting mechanism of the constant flow casting lifting equipment according to claim 1 is characterized in that: The first support frame (2) and the second support frame (4) are both formed by welding a plurality of stainless steel rods, and the first support frame (2) and the second support frame (4) are both square-shaped.

6. The lifting mechanism of the constant flow casting lifting equipment according to claim 1, characterized in that: Two metal sleeves (7) arranged opposite to each other are fixedly mounted on a side of the second support frame (4) facing the guide groove (1), and the housing of the second hydraulic cylinder (8) is fixed on the inner wall of the metal sleeve (7).

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