Ladle crane

Abstract

The utility model discloses a ladle crane which comprises two end beams, two main beams arranged between the two end beams, a crane carriage running on the main beams, a winding drum mechanism arranged at the top of the crane carriage, a driving plate arranged below the winding drum mechanism, a movable pulley block arranged on the driving plate, a fixed pulley arranged on the crane carriage, and a movable pulley arranged on the fixed pulley. A steel wire rope of the winding drum mechanism is fixed on the winding drum mechanism after sequentially bypassing the movable pulley block, the fixed pulley and the movable pulley block; mounting plates are symmetrically arranged on the two sides of the bottom of the driving plate, speed reducers are arranged on the outer sides of the mounting plates, the output ends of the speed reducers penetrate through the mounting plates and are fixedly connected with trays, front supporting grooves and rear supporting grooves are formed in the trays, and the front supporting grooves are higher than the rear supporting grooves; a steel ladle is arranged between the two trays, and a front supporting rod and a rear supporting rod are arranged on the two sides of the steel ladle respectively. The utility model is used for solving the problem that the casting quality is influenced as the flow of molten steel is difficult to master due to insufficient stability when the steel ladle is dumped in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of lifting machinery and equipment technology, and in particular to a casting crane. Background Technology

[0002] Casting cranes are used in foundries to lift and tilt ladles of steel to complete the casting process. Currently, most gantry cranes are used in molten metal casting processes. The main hook and auxiliary hook work together to move and tilt the ladle. The main hook lifts the ladle, and the auxiliary hook tilts it to pour the molten steel. However, this method causes the ladle's center of gravity to shift rapidly, compromising the stability of the molten steel pouring. This results in inconsistent molten steel flow rates during casting, affecting the casting quality. Utility Model Content

[0003] The purpose of this invention is to provide a casting crane that solves the problem in the prior art where the ladle lacks stability when tilting, making it difficult to control the flow rate of molten steel and thus affecting the casting quality.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a casting crane, comprising two end beams, with two main beams installed between the two end beams. A lifting trolley runs on the main beams, a drum mechanism is installed on the top of the lifting trolley, and a slewing bearing is installed at the bottom of the lifting trolley, with a fixed frame at the bottom of the slewing bearing; a drive plate is installed below the drum mechanism, and a guide frame matching the fixed frame is installed on the top of the drive plate. A movable pulley block is also installed on the top of the drive plate, and a fixed pulley is installed on the lifting trolley. The wire rope of the drum mechanism passes sequentially around the movable pulley block, the fixed pulley, and the movable pulley block before being fixed to the drum mechanism. The structure consists of: symmetrical mounting plates on both sides of the bottom of the drive plate; a reducer on the outer side of the mounting plates; a dual-output shaft drive motor mounted on the top of the drive plate; a transmission rod fixedly connected to the output end of the drive motor; a transmission gear on the transmission rod; a transmission chain connecting the transmission gear to the input end of the reducer; and a tray fixedly connected to the output end of the reducer passing through the mounting plate. The tray has a front support groove and a rear support groove, with the front support groove being higher than the rear support groove. A steel ladle is placed between the two trays, with a front support rod matching the front support groove and a rear support rod matching the rear support groove on both sides of the ladle.

[0005] Optionally, the fixing frame includes four fixing rods arranged in a rectangle, and guide wheels are installed on the edge of the guide frame, which roll against the inside of the fixing rods.

[0006] Optionally, several reinforcing rods are fixedly connected to the outside of the fixing rod and the guide frame.

[0007] Optionally, an insulation board is provided between the drive plate and the ladle, and several chains are provided on the top of the insulation board. The top of the chains passes through the drive plate and is fixedly connected to the fixing frame.

[0008] Optionally, four chains are provided, arranged in a rectangle on the top of the insulation board, and the tops of the four chains are respectively fixedly connected to four fixed rods.

[0009] Optionally, the front end of the ladle is provided with a pouring chute, and the front end of the insulation board is provided with a baffle that matches the pouring chute.

[0010] Optionally, the bottom of the insulation board is provided with a limiting block that matches the opening of the ladle.

[0011] Optionally, a limiting plate is fixedly connected to the end of the insulation board.

[0012] The casting crane of this utility model has the following advantages:

[0013] (1) The front support rod of the ladle is placed in the front slot of the pallet, and the rear support rod of the ladle is placed in the rear slot of the pallet. When the pallet rotates, the front slot descends and the rear slot rises, so that the center of gravity of the ladle changes smoothly, improving the stability when tilting and ensuring the uniformity of casting.

[0014] (2) After the ladle is placed on the pallet, the drive plate is raised by the drum mechanism, and the pallet will also lift the ladle until the ladle lifts the insulation plate. The insulation plate covers the top of the ladle, which can effectively reduce the loss of heat from the molten steel. Moreover, it can prevent the molten steel from splashing out of the ladle during the hoisting process, avoid waste of resources, and improve the safety of production.

[0015] (3) The guide frame enables the drive plate to move stably in the vertical direction, avoiding swaying, thereby improving the stability of steel ladle hoisting. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is the front view of this utility model.

[0018] Figure 3 This is a schematic diagram showing the connection between the drum mechanism and the drive plate.

[0019] Figure 4 This is a schematic diagram showing the connection between the driver board and the mounting board.

[0020] Figure 5 This is a schematic diagram of the connection between the fixed frame and the guide frame.

[0021] Figure 6 This is a structural diagram of a steel ladle.

[0022] Figure 7 This is a structural diagram of the insulation board.

[0023] Figure 8 This is a diagram showing a ladle being tilted. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] like Figures 1-8 As shown, a casting crane includes two end beams 1, with two main beams 2 installed between them. A lifting trolley 3 runs on the main beams 2. A drum mechanism 4 is installed on the top of the lifting trolley 3, and a slewing bearing 5 is installed on the bottom of the lifting trolley 3. A fixing frame 6 is provided at the bottom of the slewing bearing 5. A drive plate 7 is provided below the drum mechanism 4, and a movable pulley block 31 is installed on the drive plate 7. A fixed pulley 32 is installed on the lifting trolley 3. The wire rope 33 of the drum mechanism 4 passes through the movable pulley block 31, the fixed pulley 32, and the movable pulley block 31 in sequence before being fixed to the drum mechanism 4. The fixed frame 6 includes four rectangular fixed rods 8. A guide frame 9, matching the fixed frame 6, is mounted on the top of the drive plate 7. Guide wheels 10 are installed on the edges of the guide frame 9, rolling against the inner side of the fixed rods 8. The guide frame 9 can move stably vertically along the fixed rods 8, improving the stability of the drive plate 7 during lifting and lowering. Furthermore, due to the constraint of the guide frame 9, the drive plate 7 will not sway horizontally, making the hoisting of the ladle 21 more stable and preventing molten steel from splashing out due to ladle 21 swaying. Several reinforcing rods 11 are fixedly connected to the outer sides of the fixed rods 8 and the guide frame 9 to increase the strength of the fixed frame 6 and the guide frame 9.

[0026] Mounting plates 12 are symmetrically arranged on both sides of the bottom of the drive plate 7. A reducer 13 is arranged on the outer side of the mounting plate 12. A dual-output shaft drive motor 14 is mounted on the top of the drive plate 7. A transmission rod 15 is fixedly connected to the output end of the drive motor 14. The transmission rod 15 is rotatably connected to the top of the drive plate 7. A transmission gear 16 is arranged on the transmission rod 15. The transmission gear 16 is connected to the input end of the reducer 13 through a transmission chain 17. The output end of the reducer 13 passes through the mounting plate 12 and is fixedly connected to a tray 18. The drive motor 14 can drive the two trays 18 to rotate synchronously. The pallet 18 has a front support groove 19 and a rear support groove 20, with the front support groove 19 being higher than the rear support groove 20. A front support rod 23, matching the front support groove 19, is located on the front side of the ladle 21, and a rear support rod 24, matching the rear support groove 20, is located on the rear side of the ladle 21. The front support rod 23 is higher than the rear support rod 24. The ladle 21 is placed between the two pallets 18. Rotating the pallets 18 causes the ladle 21 to tip over, thus allowing the molten steel to be poured. When the ladle 21 tip over, the front support groove 19 lowers the front support rod 23, and the rear support groove 20 raises the rear support rod 24, ensuring a smooth shift in the center of gravity of the ladle 21 during tipping, preventing drastic fluctuations and improving the stability of the tipping process.

[0027] An insulation plate 25 is installed between the drive plate 7 and the ladle 21. Four chains 26 arranged in a rectangle are mounted on the top of the insulation plate 25, passing through it and fixedly connected to the bottom of four fixing rods 8. The position of the insulation plate 25 remains unchanged. A pouring trough 27 is provided at the front end of the ladle 21, allowing molten steel to flow out evenly and stably, making the pouring process easier to control. The shape of the insulation plate 25 matches the opening shape of the ladle 21. A baffle 28 matching the pouring trough 27 is provided at the front end of the insulation plate 25, with the baffle 28 being slightly shorter than the pouring trough 27, providing an opening for pouring molten steel. A limiting block 29 matching the ladle 21 is provided at the bottom of the insulation plate 25. When the insulation plate 25 covers the top of the ladle 21, the limiting block 29 can be locked inside the ladle 21, restricting the shaking of the insulation plate 25 and ensuring its insulation effect. A limiting plate 30 is fixedly connected to the end of the insulation board 25. When the ladle 21 is poured, the limiting plate 30 is stuck at the end of the ladle 21 to prevent the insulation board 25 from slipping off when the molten steel is poured.

[0028] The end beam 1 and the lifting trolley 3 drive the drive plate 7 to move horizontally. After moving to the position of the ladle 21, the height of the tray 18 is adjusted by the drum mechanism 4, and the angle of the tray 18 is adjusted by the slewing bearing 5, so that the two support slots cooperate with the support rods on both sides of the ladle 21. Then, the drum mechanism 4 drives the ladle 21 to rise until the insulation plate 25 covers the top of the ladle 21. Through the movement of the end beam 1 and the lifting trolley 3, the ladle 21 is hoisted to the casting position. During the movement, the molten steel will not splash out due to the obstruction of the insulation plate 25, and the heat will not be lost excessively. Finally, the drive motor 14 drives the tray 18 to rotate, realizing the tilting of the ladle 21 and completing the pouring of the molten steel. During the tilting process, the height difference between the two support points of the ladle 21 gradually decreases, thereby stabilizing the change in the center of gravity of the ladle 21, which is conducive to improving the uniformity of casting.

[0029] The embodiments described above are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the protection scope of this utility model.

Claims

1. A casting crane, comprising two end beams, two main beams installed between the two end beams, a lifting trolley running on the main beams, and a drum mechanism installed on the top of the lifting trolley, characterized in that: The bottom of the trolley is equipped with a slewing bearing, and the bottom of the slewing bearing is equipped with a fixed frame. Below the drum mechanism is a drive plate, and the top of the drive plate is equipped with a guide frame that matches the fixed frame. A movable pulley block is also installed on the top of the drive plate. The trolley is equipped with a fixed pulley. The wire rope of the drum mechanism passes sequentially through the movable pulley block, the fixed pulley, and the movable pulley block before being fixed to the drum mechanism. Mounting plates are symmetrically arranged on both sides of the bottom of the drive plate. A reducer is installed on the outer side of the mounting plate. A double-output shaft drive motor is installed on the top of the drive plate. The output end of the drive motor is fixedly connected to a transmission rod, and a transmission gear is installed on the transmission rod. The transmission gear is connected to the input end of the reducer via a transmission chain. The output end of the reducer passes through the mounting plate and is fixedly connected to a tray. The tray has a front support groove and a rear support groove, with the front support groove being higher than the rear support groove. A steel ladle is placed between the two trays. A front support rod matching the front support groove and a rear support rod matching the rear support groove are respectively installed on both sides of the steel ladle.

2. The casting crane as described in claim 1, characterized in that: The fixing frame includes four fixing rods arranged in a rectangle, and guide wheels are installed on the edge of the guide frame, which roll against the inside of the fixing rods.

3. The casting crane as described in claim 2, characterized in that: Several reinforcing rods are fixedly connected to the outer side of the fixed rod and the guide frame.

4. The casting crane as described in claim 2, characterized in that: An insulation board is installed between the drive plate and the ladle. Several chains are installed on the top of the insulation board, and the top of the chains passes through the drive plate and is fixedly connected to the fixing frame.

5. The casting crane as described in claim 4, characterized in that: There are four chains arranged in a rectangle on the top of the insulation board, and the top of each chain is fixedly connected to one of the four fixing rods.

6. The casting crane as described in claim 4, characterized in that: The front end of the ladle is equipped with a tilting chute, and the front end of the insulation board is equipped with a baffle that matches the tilting chute.

7. The casting crane as described in claim 6, characterized in that: The bottom of the insulation board is equipped with a limiting block that matches the opening of the ladle.

8. The casting crane as described in claim 4, characterized in that: A limit plate is fixedly connected to the end of the insulation board.

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