Lifting appliance for lifting dip pipe of RH (Ruhrstahl Hausen) furnace

Abstract

The utility model provides a lifting appliance for lifting a dip pipe of an RH (Ruhrstahl Heraeus) furnace, which comprises a lifting frame and a lifting device, the number of the clamping bodies is two, the two clamping bodies are rotatably installed on the two connecting frames respectively, the rotating axes of the two clamping bodies coincide with each other, and the inner walls of the two clamping bodies are in an arc shape; butt joint mechanisms used for butt joint of the two clamp bodies are arranged at the end portions of the two clamp bodies; wherein the butt joint mechanism is used for butt joint of the two clamp bodies; the dip pipe clamp is reasonable in design structure, the dip pipe can be clamped by the two clamp bodies with the arc-shaped inner walls, the clamp bodies can rotate along the horizontal axis, the dip pipe can be stably clamped and moved by clamping the clamp bodies above the dip pipe, and the dip pipe can be stably clamped and moved by clamping the clamp bodies below the dip pipe. During hoisting, the dip pipe can be turned around, and the dip pipe hoisting device has the advantages of being easy to operate, safe and reliable.

Description

Technical Field

[0001] The utility model belongs to the technical field of lifting tools, and particularly relates to a lifting tool for hoisting an immersion tube of an RH furnace. Background Art

[0002] The immersion tube is an important part of the RH refining furnace. Its inner lining is generally built with refractory bricks of precise dimensions. The space between the refractory bricks and the steel structure is filled with self-leveling material. Anchor bolts are welded outside the steel structure, and corundum refractory material is cast for protection. The main reasons for the damage of the refractory material inside the immersion tube are mechanical erosion and thermal stress. During use, the molten steel enters the vacuum chamber through the riser for refining, and after the end, it flows back into the ladle through the downcomer. During the production and manufacturing process of the immersion tube, mechanical processing needs to be carried out on its upper and lower ends, etc. Due to its heavy weight, it is very inconvenient to handle. The traditional method is to use ordinary lifting ropes for hoisting. However, since the end face of the immersion tube needs to be upward, there are problems such as large operation difficulty and cumbersome operation when using traditional lifting ropes for hoisting. Also, since the immersion tube needs to be turned upside down after processing at one end, it further increases the difficulty and danger of hoisting. Therefore, there is an urgent need for a lifting tool for hoisting the immersion tube of the RH furnace to solve the above problems. Summary of the Utility Model

[0003] In order to solve the above technical problems, the utility model provides a lifting tool for hoisting an immersion tube of an RH furnace, which can clamp the immersion tube by using two clamping bodies with arc-shaped inner walls, and the clamping bodies can rotate along the horizontal axis. By clamping the clamping bodies above the immersion tube, the immersion tube can be stably clamped and moved. By clamping the clamping bodies below the immersion tube, the center of gravity of the immersion tube can be lifted, and the immersion tube can be turned upside down during hoisting, which has the advantages of simple operation, safety and reliability.

[0004] The technical solution adopted by the utility model is: a lifting tool for hoisting an immersion tube of an RH furnace, comprising:

[0005] A suspension bracket, which includes two parallel connecting frames;

[0006] Clamping bodies, there are two clamping bodies, and the two clamping bodies are respectively rotatably installed on the two connecting frames, and the rotation axes of the two clamping bodies coincide with each other. The inner walls of the two clamping bodies are arc-shaped; at the end positions of the two clamping bodies, there is a docking mechanism for docking the two clamping bodies;

[0007] Wherein, after the docking mechanism docks the two clamping bodies, an object can be clamped between the two clamping bodies, and the object can rotate with the rotation of the clamping bodies.

[0008] The suspension bracket further includes:

[0009] A cross beam, which is fixedly connected to the end positions of the two connecting frames far away from the clamping bodies;

[0010] The sling ring is fixedly connected to the middle position of the cross beam;

[0011] Wherein, the distance between the two clamping bodies and the cross beam is greater than the rotation radius of the two clamping bodies.

[0012] The outer side of the clamping body is provided with a rotating shaft extending outwards, and the rotating shaft is installed at the lower end position of the connecting frame through a bearing.

[0013] The rotating shaft is located at the middle position of the clamping body.

[0014] The docking mechanism includes:

[0015] A connecting plate is installed at the end position of the clamping body and extends towards the outside of the clamping body, and its extending direction is perpendicular to the rotation axis of the clamping body, and a connecting hole is opened thereon;

[0016] A locking bolt passes through the connecting hole of the connecting plate and a nut is installed thereon to realize the docking of the two clamping bodies.

[0017] The central angle of the arc-shaped structure of the inner wall of the clamping body is less than 180°.

[0018] The beneficial effects of the present utility model are:

[0019] The design structure of the present utility model is reasonable. It can clamp the impregnation tube by using two clamping bodies with arc-shaped inner walls, and the clamping bodies can rotate along the horizontal axis. By clamping the clamping bodies above the impregnation tube, the impregnation tube can be stably clamped and moved. By clamping the clamping bodies below the impregnation tube, the center of gravity of the impregnation tube can be moved upwards, and the impregnation tube can be turned around during hoisting. It has the advantages of simple operation, safety and reliability. Description of the Drawings

[0020] Figure 1 is a perspective view of the present utility model;

[0021] Figure 2 is a working state diagram of the present utility model when hoisting and moving the impregnation tube;

[0022] Figure 3 is a clamping working state diagram of the present utility model when turning around the impregnation tube.

[0023] Wherein: 1. sling ring; 2. cross beam; 3. connecting frame; 4. clamping body; 5. connecting plate; 6. locking bolt; 7. rotating shaft; 8. impregnation tube. Detailed Embodiment

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0025] As shown in the figure, a lifting tool for the dipping tube of an RH furnace includes:

[0026] A suspension bracket, which includes two connecting brackets 3 arranged in parallel. In this example, the connecting bracket 3 is in the shape of a rod, and the two connecting brackets 3 are parallel and of equal length;

[0027] Two clamping bodies 4 are provided. The two clamping bodies 4 are respectively rotatably installed on the two connecting brackets 3, and the rotation axes 7 of the two clamping bodies 4 coincide with each other. The inner walls of the two clamping bodies 4 are arc-shaped; there is a docking mechanism at the end positions of the two clamping bodies 4 for docking the two clamping bodies 4. In this example, in order to reduce the overall weight of the clamping body 4, both the outer wall and the inner wall of the clamping body 4 are arc-shaped structures. Specifically, the outer side of the clamping body 4 has a rotating shaft 7 extending outward. The rotating shaft 7 is installed at the lower end position of the connecting bracket 3 through a bearing. Among them, the rotating shaft 7 is located in the middle of the clamping body 4, that is, the distances from the rotating shaft 7 to the two end points of the clamping body 4 are equal. This can increase the stability and firmness of clamping during the subsequent clamping of the dipping tube 8.

[0028] Among them, after the docking mechanism docks the two clamping bodies 4, an object can be clamped between the two clamping bodies 4, and the object can rotate with the rotation of the clamping body 4.

[0029] Specifically, the suspension bracket further includes:

[0030] A cross beam 2, which is fixedly connected to the end positions of the two connecting brackets 3 far from the clamping body 4;

[0031] A lifting ring 1, which is fixedly connected to the middle position of the cross beam 2 and is used to facilitate hanging on the hook of the overhead crane to achieve the lifting effect;

[0032] Among them, the distance between the two clamping bodies 4 and the cross beam 2 is greater than the rotation radius of the two clamping bodies 4. The purpose is to enable the clamping body 4 to rotate 360° around its own rotation center line, so as to facilitate the operation of turning the dipping tube 8 up and down.

[0033] The docking mechanism includes:

[0034] A connecting plate 5, which is installed at the end position of the clamping body 4 and extends outward in the direction of the outside of the clamping body 4. Its extending direction is perpendicular to the rotation axis 7 of the clamping body 4, and a connecting hole is opened thereon;

[0035] The locking bolt 6 passes through the connection hole of the connecting plate 5, and a nut is installed thereon to realize the butt joint of the two clamping bodies 4;

[0036] The main purpose of this butt-joint structure is to realize the clamping of the dipping tube 8 after the two clamping bodies 4 are butted.

[0037] The central angle of the arc-shaped structure on the inner wall of the clamping body 4 is less than 180°. That is, in the extreme case, when the outer diameter of the dipping tube 8 is the same as the inner diameter of the clamping body 4, the clamping body 4 acts on the outer wall of the dipping tube 8, enabling the connecting plates 5 of the two clamping bodies 4 not to contact each other and having a certain gap. Thus, after the locking bolt 6 and the nut are tightened, the dipping tube 8 can be clamped.

[0038] When this lifting tool for the dipping tube of the RH furnace is in use, as Figure 2 shown, the two clamping bodies 4 act on the upper 1 / 3 position of the dipping tube 8 for clamping. At this time, the center of gravity of the dipping tube 8 is below the two clamping bodies 4. Therefore, the dipping tube 8 can be clamped in this state and its position can be moved, and the dipping tube 8 can be moved to the designated position; as Figure 3 shown, when the lower end of the dipping tube 8 needs to be processed after the upper end is processed, at this time, the clamping body 4 acts on the dipping tube 8 near the lower 1 / 3. At this time, the center of gravity of the dipping tube 8 is above the clamping body 4. When the lifting tool rises under the action of the crane, the dipping tube 8 can be turned around the central axis of the clamping body 4 to realize the operation of turning around, and finally return to the state as Figure 2 shown for the operation of shifting.

[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lifting tool for the lifting of the immersion tube of an RH furnace, characterized in that, Comprising: A hanger, which includes two connecting frames arranged in parallel; Two clamping bodies, which are respectively rotatably installed on the two connecting frames, and the rotation axes of the two clamping bodies coincide with each other. The inner walls of the two clamping bodies are arc-shaped; there is a docking mechanism at the end positions of the two clamping bodies for docking the two clamping bodies; Among them, after the docking mechanism docks the two clamping bodies, an object can be clamped between the two clamping bodies, and the object can rotate with the rotation of the clamping body.

2. The lifting tool for the immersion tube hoisting of the RH furnace according to claim 1, characterized in that, The hanger further includes: A cross beam, which is fixedly connected to the end positions of the two connecting frames away from the clamping bodies; A lifting ring, which is fixedly connected to the middle position of the cross beam; Among them, the distance between the two clamping bodies and the cross beam is greater than the rotation radius of the two clamping bodies.

3. The lifting tool for the immersion tube hoisting of the RH furnace according to claim 1, characterized in that The outer side of the clamping body has a rotating shaft extending outward, and the rotating shaft is installed at the lower end position of the connecting frame through a bearing.

4. A spreader for hoisting the immersion tube of an RH furnace according to claim 3, characterized in that, The rotating shaft is located at the middle position of the clamping body.

5. The spreader for hoisting the immersion tube of the RH furnace according to claim 4, wherein, The docking mechanism includes: A connecting plate, which is installed at the end position of the clamping body and extends outward in the direction of the outside of the clamping body. Its extending direction is perpendicular to the rotation axis of the clamping body, and a connecting hole is opened thereon; A locking bolt, which passes through the connecting hole of the connecting plate and has a nut installed thereon to realize the docking of the two clamping bodies.

6. The spreader for hoisting the immersion tube of the RH furnace according to claim 1, characterized in that, The central angle of the arc-shaped structure of the inner wall of the clamping body is less than 180°.

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