Magnet yoke hoisting device for medium-frequency electric furnace

Abstract

The utility model relates to the technical field of magnet yoke hoisting, and discloses a medium-frequency electric furnace magnet yoke hoisting device which comprises a hoisting beam and a hoist crane, the hoist crane is fixedly installed at the top end of the hoisting beam, the output end of the hoist crane is connected with a hoisting rope, the hoisting rope movably penetrates through the hoisting beam, and a hoisting plate is fixedly installed at the bottom end of the hoisting beam. A hook is fixedly installed at the bottom end of the hanging plate, and a limiting mechanism is arranged between the hanging plate and the hanging beam. By arranging the limiting mechanism, a good limiting and stabilizing effect can be achieved on the hanging plate, the stability of a rope when a magnet yoke is hung is guaranteed, a limiting rod can extrude an arc abutting plate when vibration is generated due to vertical movement, the arc abutting plate can generate elastic deformation to extrude a spring, a damping rod is driven to move into a rod groove, friction is generated between the damping rod and a damping sleeve, and damping is generated; therefore, a certain damping effect can be achieved when the magnet yoke is hoisted, and the stability of the magnet yoke during hoisting is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of yoke hoisting, in particular to a yoke hoisting device for an intermediate frequency electric furnace. Background Technique

[0002] The intermediate frequency coreless induction furnace is a key equipment in the centrifugal ductile iron pipe production line. The furnace body coil and the yoke are the core components of the induction furnace. Due to the limitation of the insulation service life, the furnace body coil needs to be replaced regularly. Before replacing the coil, 12 yokes distributed outside the coil need to be lifted out one by one, and then these 12 yokes need to be lifted into place one by one after the new coil is in place. Since the space between the coil and the furnace body shell is narrow and limited, precise operation and accurate positioning are required when hoisting the yoke;

[0003] Most of the existing yokes are hoisted by a crane during hoisting. However, the hoisting rope on the crane has a certain flexibility, which easily causes shaking and collision during the hoisting of the yoke, thus affecting the installation accuracy of the yoke. Therefore, we propose a yoke hoisting device for an intermediate frequency electric furnace. Content of the Utility Model

[0004] The purpose of the utility model is to provide a yoke hoisting device for an intermediate frequency electric furnace, which solves the problems in the background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A yoke hoisting device for an intermediate frequency electric furnace, including a hanging beam and a hoist. The hoist is fixedly installed at the top of the hanging beam. The output end of the hoist is connected with a hoisting rope, and the hoisting rope movably penetrates through the hanging beam. A hanging plate is fixedly installed at the bottom end of the hanging beam, and a hook is fixedly installed at the bottom end of the hanging plate. A limiting mechanism is arranged between the hanging plate and the hanging beam;

[0006] The limiting mechanism includes a limiting rod and an arc abutting plate. The limiting rod is fixedly installed at the top end of the hanging plate. A rod hole is opened on the hanging beam, and the limiting rod movably penetrates through the hanging beam through the rod hole. The arc abutting plate is fixedly installed on the inner wall of the rod hole, and the arc abutting plate is in rolling connection with the limiting rod. A damping rod is fixedly installed on the inner wall of the arc abutting plate, a rod groove is opened on the inner wall of the rod hole, the damping rod is inserted into the rod groove, a damping sleeve is fixedly installed on the inner wall of the rod groove, the damping sleeve is in close fit with the outer wall surface of the damping rod, and a spring is wound around the outer wall of the damping rod. The spring is fixedly installed between the inner wall of the arc abutting plate and the inner wall of the rod hole.

[0007] Preferably, a bead groove is opened on the outer wall of the arc abutting plate, and a ball is embedded in the bead groove. The ball is in rolling connection with the outer wall of the limiting rod. By setting the ball and the bead groove, the friction between the limiting rod and the arc abutting plate can be reduced, wear can be reduced, and the flexibility during the hoisting and lifting of the yoke can be ensured.

[0008] Preferably, the number of the bead grooves and the balls is several, and the number of the limiting rods and the rod holes is two each.

[0009] Preferably, the material of the arc abutting plate is elastic PVC material. By using elastic PVC material for the arc abutting plate, the arc abutting plate can have certain elasticity.

[0010] Preferably, the materials of the damping rod and the damping sleeve are both asbestos fiber friction materials. By using asbestos fiber friction materials for the damping rod and the damping sleeve, a good damping effect can be achieved to ensure the damping effect.

[0011] Preferably, a plurality of convex blocks are fixedly installed on the inner wall of the hook. By providing the convex blocks, the friction for fixing the yoke on the hook can be increased, and further the stability of the yoke during hoisting can be improved.

[0012] The utility model provides a yoke hoisting device for an intermediate frequency electric furnace. The yoke hoisting device for the intermediate frequency electric furnace has the following beneficial effects:

[0013] (1) For the yoke hoisting device for the intermediate frequency electric furnace, by providing a limiting mechanism, a good limiting and stabilizing effect can be achieved on the hanging plate, ensuring the stability of the rope when hoisting the yoke. And when the limiting rod moves up and down and generates vibration, it will squeeze the arc abutting plate, and the arc abutting plate will generate elastic deformation to squeeze the spring, and drive the damping rod to move into the rod groove to generate friction with the damping sleeve, generating damping, so as to play a certain damping role when hoisting the yoke, and further improve the stability of the yoke during hoisting, solving the problem that most of the existing yokes are hoisted by a crane, and the hoisting rope on the crane has certain flexibility, resulting in easy shaking and collision when hoisting the yoke, thus affecting the installation accuracy of the yoke;

[0014] (2) For the yoke hoisting device for the intermediate frequency electric furnace, by providing balls and bead grooves, the friction between the limiting rod and the arc abutting plate can be reduced, wear can be reduced, and the flexibility during hoisting and lowering the yoke can be ensured. By providing convex blocks, the friction for fixing the yoke on the hook can be increased, and further the stability of the yoke during hoisting can be improved. The structure is simple and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 is a schematic diagram of a partial cross-sectional structure of the front view of the utility model;

[0017] Figure 3 is the utility model Figure 1 the enlarged structure schematic diagram of part A in;

[0018] Figure 4 For the present utility model Figure 2 Schematic enlarged structure view of part B in it.

[0019] In the figure: 1, suspension beam; 2, hoist; 3, hoisting rope; 4, hanging plate; 5, hook; 6, limiting mechanism; 7, bump; 601, limiting rod; 602, rod hole; 603, arc abutting plate; 604, damping rod; 605, rod groove; 606, damping sleeve; 607, spring; 608, ball; 609, ball groove. Specific implementation manners

[0020] The following further describes in detail the implementation manners of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0021] In the description of the present utility model, unless otherwise stated, "a plurality of" means two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0022] In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] As Figures 1-4 shown, the present utility model provides a technical solution: an intermediate frequency electric furnace yoke hoisting device, including a suspension beam 1 and a hoist 2. The hoist 2 is fixedly installed at the top of the suspension beam 1. The output end of the hoist 2 is connected with a hoisting rope 3. The hoisting rope 3 movably penetrates through the suspension beam 1. A hanging plate 4 is fixedly installed at the bottom end of the suspension beam 1. A hook 5 is fixedly installed at the bottom end of the hanging plate 4. A limiting mechanism 6 is arranged between the hanging plate 4 and the suspension beam 1;

[0024] The limiting mechanism 6 includes a limiting rod 601 and an arc abutting plate 603. The limiting rod 601 is fixedly installed at the top end of the hanging plate 4. A rod hole 602 is formed in the hanging beam 1. The limiting rod 601 movably penetrates through the hanging beam 1 through the rod hole 602. The arc abutting plate 603 is fixedly installed on the inner wall of the rod hole 602. The arc abutting plate 603 is in rolling connection with the limiting rod 601. A damping rod 604 is fixedly installed on the inner wall of the arc abutting plate 603. A rod groove 605 is formed in the inner wall of the rod hole 602. The damping rod 604 is inserted into the rod groove 605. A damping sleeve 606 is fixedly installed on the inner wall of the rod groove 605. The damping sleeve 606 is in close fit with the outer wall surface of the damping rod 604. A spring 607 is wound around the outer wall of the damping rod 604. The spring 607 is fixedly installed between the inner wall of the arc abutting plate 603 and the inner wall of the rod hole 602.

[0025] Specifically in the above technical solution, when the intermediate frequency electric furnace yoke hoisting device is in use, the hoist 2 is started to move the hoisting rope 3 downward. The hoisting rope 3 drives the hook 5 downward through the hanging plate 4. When it descends to a certain height, the yoke can be fixed on the hook 5. Then the hoist 2 is started to contract the hoisting rope 3, so as to lift the yoke. Then the yoke is moved to above the installation position by the crane. Then the hoist 2 is started again to lower the hoisting rope 3. The hoisting rope 3 drives the hanging plate 4 downward. The hanging plate 4 makes the yoke descend to the installation position through the hook 5. Then the installation operation is completed. When the hanging plate 4 rises or falls, the limiting rod 601 can play a good role in limiting and stabilizing the hanging plate 4, ensuring the stability of the rope when hanging the yoke. And when the limiting rod 601 moves up and down and generates vibration, it will squeeze the arc abutting plate 603. The arc abutting plate 603 will produce elastic deformation and squeeze the spring 607, and drive the damping rod 604 to move into the rod groove 605 to generate friction with the damping sleeve 606, generating damping, so as to play a certain shock absorption role when hoisting the yoke, further improving the stability of the yoke during hoisting, and solving the problem that most of the existing yokes are hoisted by a crane, and the hoisting rope 3 on the crane has a certain flexibility, resulting in easy shaking and collision when hoisting the yoke, thus affecting the installation accuracy of the yoke.

[0026] Further, a bead groove 609 is formed in the outer wall of the arc abutting plate 603. A ball 608 is embedded in the bead groove 609. The ball 608 is in rolling connection with the outer wall of the limiting rod 601;

[0027] Among them, by setting the ball 608 and the bead groove 609, the friction between the limiting rod 601 and the arc abutting plate 603 can be reduced, the wear can be reduced, and the flexibility during the hoisting and lowering of the yoke can be ensured.

[0028] Further, the number of the bead grooves 609 and the balls 608 is several. The number of the limiting rods 601 and the rod holes 602 is both two.

[0029] Furthermore, the material of the arc abutting plate 603 is elastic PVC material;

[0030] Among them, by using elastic PVC material for the arc abutting plate 603, the arc abutting plate 603 can have certain elasticity.

[0031] Furthermore, the materials of the damping rod 604 and the damping sleeve 606 are both asbestos fiber friction materials;

[0032] Among them, by using asbestos fiber friction materials for the damping rod 604 and the damping sleeve 606, a good damping effect can be achieved to ensure the shock absorption effect.

[0033] Furthermore, a convex block 7 is fixedly installed on the inner wall of the hook 5, and the number of the convex blocks 7 is several;

[0034] Among them, by setting the convex block 7, the friction for fixing the yoke on the hook 5 can be increased, and the stability of the yoke during hoisting can be further improved.

[0035] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better explain the principles of the present invention and its practical applications, and to enable those of ordinary skill in the art to understand the present invention so as to design various embodiments with various modifications suitable for specific purposes.

Claims

1. A magnetic yoke lifting device for an intermediate frequency electric furnace, comprising a lifting beam (1) and a hoist (2), characterized in that: The hoist (2) is fixedly installed at the top of the suspension beam (1). The output end of the hoist (2) is connected with a hoisting rope (3). The hoisting rope (3) movably penetrates through the suspension beam (1). A suspension plate (4) is fixedly installed at the bottom end of the suspension beam (1). A hook (5) is fixedly installed at the bottom end of the suspension plate (4). A limiting mechanism (6) is arranged between the suspension plate (4) and the suspension beam (1). The limiting mechanism (6) includes a limiting rod (601) and an arc-shaped abutting plate (603). The limiting rod (601) is fixedly installed at the top end of the suspension plate (4). A rod hole (602) is formed in the suspension beam (1). The limiting rod (601) movably penetrates through the suspension beam (1) through the rod hole (602). The arc-shaped abutting plate (603) is fixedly installed on the inner wall of the rod hole (602). The arc-shaped abutting plate (603) is in rolling connection with the limiting rod (601). A damping rod (604) is fixedly installed on the inner wall of the arc-shaped abutting plate (603). A rod groove (605) is formed in the inner wall of the rod hole (602). The damping rod (604) is inserted into the rod groove (605). A damping sleeve (606) is fixedly installed on the inner wall of the rod groove (605). The damping sleeve (606) is in close fit with the outer wall surface of the damping rod (604). A spring (607) is wound around the outer wall of the damping rod (604). The spring (607) is fixedly installed between the inner wall of the arc-shaped abutting plate (603) and the inner wall of the rod hole (602).

2. The magnetic yoke hoisting device for an intermediate frequency electric furnace according to claim 1, wherein: A bead groove (609) is formed in the outer wall of the arc-shaped abutting plate (603). A ball (608) is embedded in the bead groove (609). The ball (608) is in rolling connection with the outer wall of the limiting rod (601).

3. The magnetic yoke lifting device for an intermediate frequency electric furnace according to claim 2, characterized in that: The number of the bead grooves (609) and the balls (608) is several. The number of the limiting rods (601) and the rod holes (602) is two.

4. A magnetic yoke hoisting device for an intermediate frequency electric furnace according to claim 1, characterized in that: The arc-shaped abutting plate (603) is made of elastic PVC material.

5. A magnetic yoke hoisting device for an intermediate frequency electric furnace according to claim 1, characterized in that: The damping rod (604) and the damping sleeve (606) are both made of asbestos fiber friction material.

6. The magnetic yoke hoisting device for intermediate frequency electric furnace according to claim 5, characterized in that: A convex block (7) is fixedly installed on the inner wall of the hook (5). The number of the convex blocks (7) is several.

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