Grabbing device capable of rapidly replacing tundish of smelting furnace and using method

Abstract

The invention discloses a grabbing device for rapidly replacing a tundish of a smelting furnace and a using method of the grabbing device, and relates to the technical field of metal smelting equipment. In order to solve the problems that in the prior art, tundish replacement is tedious in operation and low in efficiency, and an operator is scalded and has safety risks due to close-range manual operation in a high-temperature environment, the following technical scheme is provided: the tundish replacement device comprises a handle, a supporting rod, a top shaft and a movable gripper; the supporting rod is fixed on the handle; the top shaft is in sliding fit with the handle; the middle of the movable gripper is rotationally connected to the supporting rod, and the tail of the movable gripper is rotationally connected to a movable platform fixed to the bottom of the top shaft; a rail rod with a pulley is also fixed on the top shaft; the pulley is placed on a step of a rotatable arc track, and the arc track is driven by a track rotating handle. Remote grabbing and releasing are achieved through a mechanical linkage structure, operation is safe and convenient, the high-temperature tundish does not need to be in close contact, and the replacement efficiency and operation safety are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of metal smelting equipment technology, specifically to a quick-change tundish grabbing device for smelting furnaces and its usage method. Background Technology

[0002] In industries such as iron and steel smelting, special metal alloy smelting, and powder preparation, the tundish is a crucial container for receiving, storing, and distributing high-temperature molten metal, or guiding it to an atomizing plate for dispersion. Timely replacement and efficient maintenance of the tundish are essential during production. For example, in atomization powder production processes, the tundish must be quickly replaced after each atomization operation, or if molten metal blockage (commonly known as "furnace blockage") occurs during production, to ensure the continuation of product atomization for the next batch, thereby guaranteeing production continuity and efficiency.

[0003] Especially in the preparation of 3D printing powders or special powders used in high-end fields such as aerospace, medical, and energy electronics, the requirements for product quality stability are extremely high. This usually requires the use of a special intermediate package, and in order to ensure the quality consistency between batches, a new intermediate package needs to be replaced for each batch.

[0004] However, in the current process of replacing and maintaining intermediate packages, traditional fetching methods have exposed a series of problems that urgently need to be solved.

[0005] First and foremost, safety is a critical concern. Immediately after operation, the tundish often still contains residual molten steel at high temperatures, remaining red-hot with temperatures exceeding 1000°C. If operators use ordinary gloves, the thin gloves pose a serious risk of burns.

[0006] Secondly, the operation is inconvenient and inefficient. When a "furnace blockage" occurs, the molten steel trapped inside the tundish becomes extremely heavy, making manual retrieval very difficult. Most existing grabbing devices have cumbersome operating procedures. Take, for example, the common transfer lifting equipment that requires manual hooking and unhooking. When lifting the tundish, the hooking and unhooking process not only requires close-range manual operation by the operator but also relies on the precise movement of the casting crane's lifting mechanism and trolley. Operators are forced to work at close range in high-temperature, dangerous environments. This not only consumes a significant amount of manpower and time, resulting in extremely low work efficiency, but also exposes operators to significant safety risks; a slight mistake could lead to a serious accident.

[0007] Therefore, developing a quick-change tundish grabbing device for smelting furnaces that is simple in structure, easy to operate, highly versatile, and can significantly improve replacement efficiency and operational safety has become a key technical problem that the metal smelting industry urgently needs to solve. Summary of the Invention

[0008] The purpose of this invention is to provide a quick replacement tundish grabbing device and its usage method for smelting furnaces, so as to solve the problems of cumbersome operation, low efficiency and great safety risks of operators manually operating at close range in high temperature environment in the prior art when replacing tundishes in smelting furnaces.

[0009] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A quick-change tundish grabbing device for a smelting furnace includes: a movable gripper, a top shaft, a handle, and a support rod. The support rod is fixedly connected to the handle. The top shaft slides vertically with the handle. The movable gripper has a claw and a tail, the middle of which is rotatably connected to the support rod. The movable platform is a disc-shaped structure and is fixedly connected to the bottom of the top shaft. The tail of the movable gripper is rotatably connected to the movable platform. The track rod is horizontally arranged and fixedly connected to the top shaft. Two pulleys are symmetrically arranged at both ends of the track rod. The arc track is a ring structure and rotates with the top shaft. Its upper surface is provided with a sloping step, and the pulleys rest on the step.

[0010] Furthermore, the active grippers are right-angled plate structures, and there are four of them. There are two track rotation handles, symmetrically arranged on the outer side of the circular arc track.

[0011] It also includes a locking mechanism, which is a pin structure and is located between the arc track and the handle.

[0012] A method for using a quick-change ladle gripping device for a smelting furnace includes the following steps: S1: Rotate the track rotation handle to make the arc track rotate until the pulley on the track rod is at the low position of the step, the top shaft descends, the movable platform drives the tail of the movable gripper to descend, and the movable gripper rotates around the support rod; S2: Grab the handle and place the device at the middle bag to be grasped, so that the claw of the movable gripper is placed in the groove of the middle bag; S3: Reverse rotation of the track rotation handle causes the steps of the arc track to push the pulley and track rod to rise, and the track rod drives the top shaft to rise; the top shaft drives the movable platform to rise, and the movable platform pulls the tail of the movable gripper, causing the movable gripper to rotate around the support rod; S4: Grab the handle and move the middle bag to the target position; S5: Repeat the rotation operation of S1.

[0013] The steps following S3 and before S4 include: S31: Locking mechanism on the arc track; Before step S5, the following steps are also included: S41: Release the locking mechanism.

[0014] The present invention has the following beneficial effects: By rotating the handle along the track, the movable gripper can be driven to clamp and release the high-temperature intermediate ladle. The entire operation process does not require the operator to have close contact with or directly assist in gripping the parts, effectively avoiding the risks of working in high-temperature and hazardous environments, greatly ensuring the personal safety of the operator, and preventing accidents such as burns. Attached Figure Description

[0015] Figure 1 A schematic diagram of the gripping structure of an embodiment of an auxiliary device for gripping and replacing a tundish in a smelting furnace; Figure 2 A schematic diagram of the release structure of an embodiment of an auxiliary device for grabbing and replacing an intermediate ladle in a smelting furnace; Figure 3 This is a top view of an embodiment of an auxiliary device for grabbing and replacing an intermediate ladle in a smelting furnace.

[0016] Figures 1 to 3 The reference numerals in the attached drawings are respectively: 1-track rotating handle, 2-movable gripper, 3-top shaft, 4-circular arc track, 5-handle, 6-handle, 7-track rod, 8-pulley, 9-step, 10-locking mechanism, 11-movable platform, 12-support rod. Detailed Implementation

[0017] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please refer to Figure 1-3 This embodiment provides a quick-change tundish gripping device for smelting furnaces. It includes a handle 6, which the operator holds to lift and move the entire device.

[0019] A support rod 12 is fixedly connected to the handle 6. This support rod 12 serves as a fixed fulcrum for rotatably connecting the movable gripper 2. In this embodiment, the movable gripper 2 is preferably four in number and has a right-angle plate structure to better fit the groove of the intermediate bag. The four movable grippers 2 are evenly distributed around the center of the device, and the middle of each movable gripper 2 is rotatably connected to the support rod 12 via a pin.

[0020] The device has a top shaft 3 at its center, which is vertically slidingly engaged with the handle 6, allowing it to move up and down vertically.

[0021] The top shaft 3 connects to two key components. At the bottom of the top shaft 3, a disc-shaped movable platform 11 is fixedly connected. The tails of the four movable grippers 2, i.e., the ends furthest from the claws, are rotatably connected to this movable platform 11. Thus, the support rod 12 on the handle 6 serves as the fulcrum of the lever, and the movable platform 11 serves as the force application point of the lever. At the top of the top shaft 3, a horizontally arranged track rod 7 is fixedly connected. Two pulleys 8 are symmetrically arranged at both ends of the track rod 7.

[0022] An annular arc track 4 is fitted around the top shaft 3, and the arc track 4 can rotate relative to the top shaft 3 or the handle 6. The upper surface of the arc track 4 is provided with a sloping step 9, which has obvious high and low points. Two pulleys 8 on the track rod 7 rest on the surface of the step 9 of the arc track 4.

[0023] To drive the circular track 4 to rotate, two track rotation handles 1 are symmetrically arranged on its outer side to facilitate the operator to apply force.

[0024] In addition, to ensure the safety of the gripping process, the device also includes a locking mechanism 10. This locking mechanism 10 is preferably a pin structure, which is disposed between the arc track 4 and the handle 6 to lock them in the clamped state, preventing accidental rotation of the arc track 4.

[0025] The specific method of using this invention is as follows: Clamping Process: First, in the initial state, rotate the track rotation handle 1 so that the pulley 8 is in the lowest position of step 9. At this time, the top shaft 3 is in the lowest position, and the movable platform 11 pushes the tail of the movable gripper 2 downward, causing the movable gripper 2 to rotate around the support rod 12, with its claws in an open state. Then, the operator picks up the handle 6, aligns the open claws with the groove of the intermediate bag, and inserts it. Next, rotate the track rotation handle 1 in the opposite direction, and the arc track 4 rotates, with the slope of step 9 pushing the pulley 8 to the higher position. The pulley 8, together with the track rod 7, is lifted, which in turn drives the top shaft 3 to move vertically upward. The lifting of the top shaft 3 causes the movable platform 11 to rise accordingly, and the movable platform 11 pulls the tail of the movable gripper 2 upward. Under the fulcrum of the support rod 12, the claws of the movable gripper 2 tighten inward, thereby clamping the intermediate bag.

[0026] Locking and Transfer: After clamping, the operator activates the locking mechanism 10, for example, by inserting a pin, to lock the arc track 4 relative to the handle 6. After locking, the operator can then grasp the handle 6 and safely move the intermediate package to the target position.

[0027] Release process: After reaching the target position, first release the locking mechanism 10. Then, rotate the track rotation handle 1 to return the pulley 8 to the low position of the step 9, the top shaft 3 descends, the claw of the movable gripper 2 opens, and the intermediate bag is released.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A quick-change tundish grabbing device for a smelting furnace, characterized in that Comprise: The activity grab (2), the top axis (3), the circular arc track (4), the handle (6), the support rod (12), the track rod (7), the support rod (12) is fixedly connected on the handle (6), the top axis (3) is vertically slidingly fitted with the handle (6), the activity grab (2) has claw and tail, wherein the middle part is rotatably connected to the support rod (12), the activity platform (11) is disc-shaped structure and is fixedly connected to the bottom of the top axis (3), the tail of the activity grab (2) is rotatably connected to the activity platform (11), the track rod (7) is horizontally arranged and fixedly connected to the top axis (3), and two pulleys (8) are symmetrically arranged on the two ends of the track rod (7), the circular arc track (4) is annular structure and is rotatably fitted with the top axis (3), and the upper surface is provided with a stepped surface (9) with slope, and the pulley (8) is placed on the stepped surface (9).

2. A quick-change smelting furnace tundish gripping device according to claim 1, characterised in that The activity grab (2) is a right-angle plate structure, and the number of activity grabs (2) is four.

3. A quick-change smelting furnace tundish gripping device according to claim 1, characterized in that The number of track rotating handles (1) is two, which are symmetrically arranged outside the circular arc track (4).

4. The quick-change smelting furnace tundish gripping device according to claim 1, characterized in that, It also includes a locking mechanism (10), which is a latch structure, and the locking mechanism (10) is arranged between the circular arc track (4) and the handle (6).

5. A method of using a quick-change tundish grab device in a smelting furnace, characterized in that The quick-change intermediate ladle grabbing device of claim 1-4, comprising the following steps: S1: rotate the track rotating handle (1), make the circular arc track (4) rotate, until the pulley (8) on the track rod (7) is at the low position of the stepped surface (9), the top axis (3) descends, the activity platform (11) drives the tail of the activity grab (2) to descend, and the activity grab (2) rotates around the support rod (12); S2: grab the handle (6), place the device at the intermediate ladle to be grabbed, and place the claw of the activity grab (2) in the groove of the intermediate ladle; S3: reversely rotate the track rotating handle (1), make the stepped surface (9) of the circular arc track (4) push the pulley (8) and the track rod (7) to lift, the track rod (7) drives the top axis (3) to lift, the top axis (3) drives the activity platform (11) to lift, the activity platform (11) pulls the tail of the activity grab (2), and the activity grab (2) rotates around the support rod (12); S4: grab the handle (6), and move the intermediate ladle to the target position; S5: repeat the rotating operation of S1.

6. The method of using a quick-change smelting furnace tundish gripping device according to claim 5, characterized in that, After S3 and before S4, further comprising the steps of: S31: lock the locking mechanism (10) on the circular arc track (4); Before step S5, further comprising the step of: S41: release the locking of the locking mechanism (10).

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