Hook device for loading and unloading of the cover of the mouth of the mixing car furnace

Abstract

The application discloses a hook device for loading and unloading a heat insulation cover of a furnace mouth of a mixing iron car, wherein a limiting plate is arranged on both sides of a circular ring, a shackle is connected with the circular ring and the hook, an arc-shaped long groove is arranged in the middle of the hook, a pin shaft is located in the arc-shaped long groove and slides, one end of an upper rod and a lower rod is fixedly connected with two ends of the pin shaft respectively, two ends of a spring are connected with the upper part of the hook and the other end of the upper rod respectively, the upper rod is located at the hook mouth position of the hook, and the lower rod is located at the hook bottom position of the hook. The device effectively solves the technical problem of loading and unloading the heat insulation cover, avoids the safety hidden danger of loading and unloading the heat insulation cover, improves the operation efficiency, and ensures the heat insulation effect of the fault maintenance of the mixing iron car.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metallurgy, and particularly relates to a lifting hook device for loading and unloading a heat insulation cover of a furnace mouth of a mixing iron car. BACKGROUND

[0002] The mixing iron car is a special metallurgical transport vehicle with a self-turning mechanism for high and low speed tilting iron work, which is used to transport high-temperature molten iron produced by a blast furnace to a converter or an electric furnace in a steelmaking plant for smelting steel, pouring cast iron blocks in front of a cast iron machine in a cast iron plant, and casting ingots in an ingot casting plant.

[0003] In a conventional transport process, the mixing iron car furnace mouth is not provided with a heat insulation cover, but when the mixing iron car fails in a hot state and enters a warehouse for maintenance, the heat insulation cover needs to be installed to prevent the heat radiation of the molten iron in the mixing iron car furnace body from causing damage to the building and equipment in the warehouse.

[0004] The heat insulation cover is provided with a lifting ring on a panel, and is provided with a heat insulation layer and a base under the panel. The base is arranged on the furnace mouth, and the weight of the heat insulation cover is about 1100 kg. The temperature of the molten iron in the mixing iron car tank is about 1400 DEG C, and the temperature around the tank is about 500 DEG C. When the cover is installed, the crane in the plant cannot meet the needs of the cover installation, and due to the effect of the crane hook safety device, the crane hook cannot be automatically detached; thereby limiting the loading and unloading operation of the heat insulation cover of the mixing iron car furnace mouth. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a lifting hook device for loading and unloading a heat insulation cover of a furnace mouth of a mixing iron car. The device effectively solves the technical problem of loading and unloading the heat insulation cover, avoids the safety hazard of the loading and unloading operation of the heat insulation cover, improves the operation efficiency, and ensures the heat insulation effect of the mixing iron car failure maintenance.

[0006] To solve the above technical problem, the lifting hook device for loading and unloading a heat insulation cover of a furnace mouth of a mixing iron car comprises a circular ring, a limiting plate, a shackle, a lifting hook, a spring, an upper rod, a lower rod and a pin shaft. The limiting plate is arranged on both sides of the circular ring. The shackle connects the circular ring and the lifting hook. The lifting hook is provided with an arc-shaped long groove in the middle. The pin shaft is located in the arc-shaped long groove and slides. One end of the upper rod and the lower rod is respectively fixedly connected to both ends of the pin shaft. The two ends of the spring are respectively connected to the upper part of the lifting hook and the other end of the upper rod. The upper rod is located at the hook opening position of the lifting hook. The lower rod is located at the hook bottom position of the lifting hook.

[0007] Further, the lower rod is an arc-shaped rod, and the arc-shaped protruding surface faces the hook opening of the lifting hook.

[0008] Further, the device further comprises a reinforcing plate, which is arranged on the limiting plates on both sides of the circular ring through bolts.

[0009] Since the hook device for loading and unloading the heat insulation cover of the furnace mouth of the mixing iron car adopts the above technical scheme, i.e., the limiting plates of the device are arranged on both sides of the circular ring, the shackle connects the circular ring and the hook, the arc-shaped long groove is arranged in the middle of the hook, the pin shaft is located in the arc-shaped long groove and slides, one end of the upper rod and the lower rod is fixedly connected to both ends of the pin shaft, the two ends of the spring are connected to the upper part of the hook and the other end of the upper rod, respectively, the upper rod is located at the hook opening position of the hook, and the lower rod is located at the hook bottom position of the hook. The device effectively solves the technical problem of loading and unloading the heat insulation cover, avoids the safety hazard of loading and unloading the heat insulation cover, improves the operation efficiency, and ensures the heat insulation effect of the fault maintenance of the mixing iron car. BRIEF DESCRIPTION OF DRAWINGS

[0010] The application will be further described in detail below in combination with the drawings and embodiments:

[0011] Figure 1 The figure is a structural schematic diagram of the hook device for loading and unloading the heat insulation cover of the furnace mouth of the mixing iron car.

[0012] Figure 2 The figure is an application schematic diagram of the device.

[0013] Figure 3 The figure is a schematic diagram of the hook dismounting of the device. DETAILED DESCRIPTION

[0014] The embodiment is as follows: Figure 1 As shown in the figure, the hook device for loading and unloading the heat insulation cover of the furnace mouth of the mixing iron car comprises a circular ring 1, limiting plates 2, a shackle 3, a hook 4, a spring 5, an upper rod 6, a lower rod 7, and a pin shaft 8. The limiting plates 2 are arranged on both sides of the circular ring 1. The shackle 3 connects the circular ring 1 and the hook 4. The hook 4 is provided with an arc-shaped long groove 41 in the middle. The pin shaft 8 is located in the arc-shaped long groove 41 and slides. One end of the upper rod 6 and the lower rod 7 is fixedly connected to both ends of the pin shaft 8, respectively. The two ends of the spring 5 are connected to the upper part of the hook 4 and the other end of the upper rod 6, respectively. The upper rod 6 is located at the hook opening position of the hook 4. The lower rod 7 is located at the hook bottom position of the hook 4. Among them, the pin shaft is fixedly connected to the upper rod and the lower rod through welding at the end face, and the upper rod and the lower rod do not rotate relative to each other. The pin shaft can move in the arc-shaped long groove and drive the upper rod and the lower rod to move.

[0015] Preferably, the lower rod 7 is an arc-shaped rod, and the arc-shaped protruding surface faces the hook opening of the hook 4.

[0016] Preferably, the device further comprises a reinforcing plate 9, which is arranged on the limiting plates 2 on both sides of the circular ring 1 through bolts.

[0017] The device has two limit plates 2, which are arranged on the left and right sides of the ring 1, and are used to constrain the rotation of the crane hook; the ring 1 is the hooking point of the crane hook, and is connected with the limit plates 2 through the bolts on both sides; the reinforcing plates 9 are installed on the outer side of the limit plates 2 to increase the rigidity of the limit plates 2; the shackle 3 is used to connect the ring 1 and the hook 4 of the device. When hoisting, the spring 5 is pulled, and the pin shaft 8 is in the lowest position of the arc-shaped long groove 41; when it is necessary to unhook, the pin shaft 8 is in the highest position of the arc-shaped long groove 41.

[0018] As shown in Figure 2 and Figure 3 , in the initial position, the other end of the upper rod 6 is pulled by the spring 5, so that the pin shaft 8 moves to the highest position along the arc-shaped long groove 41, at this time, the upper rod 6 is in the open state, that is, the hook opening of the hook 4 of the device is in the open state. When it is necessary to hoist the heat insulation cover 10, the ring 1 of the device is hung into the crane hook 11, and it is confirmed that the safety device of the crane hook 11 is effective, and the limit plates 2 on both sides of the ring 1 constrain the rotation of the crane hook 11;

[0019] The crane is operated, and when the hook 4 of the device contacts the lifting ring 12 of the heat insulation cover 10, the crane hook 11 is raised. Under the action of gravity of the heat insulation cover 10, the lifting ring 12 of the heat insulation cover 10 abuts against the lower rod 7, so that the lower rod 7 drives the pin shaft 8 to move to the lowest position along the arc-shaped long groove 41, and at the same time, the lower rod 7 rotates around the pin shaft 8 and is in the lowest position at the bottom of the hook of the hook 4 of the device; the upper rod 6 also rotates around the pin shaft 8, so that the upper rod 6 is in the hook opening position of the hook 4 of the device, that is, the hook opening of the hook 4 of the device is closed, preventing the lifting ring 12 of the heat insulation cover 10 from being detached, and playing a safety role, at this time, the spring 5 is in the pulled state.

[0020] After the heat insulation cover 10 reaches the position of the furnace mouth of the mixing car, the height of the crane hook 11 is lowered, at this time, the gravity acting on the lower rod 7 is lost, and under the action of the force of the spring 5, the pin shaft 8 is reset, and the hook opening of the hook 4 of the device is in the open state, and the crane is moved, so that the hook 4 of the device can be detached from the lifting ring 12 of the heat insulation cover 10.

[0021] The device realizes the connection and detachment of the lifting ring of the heat insulation cover and the hook of the device through the linkage of the upper rod and the lower rod, greatly facilitates the loading and unloading of the heat insulation cover of the furnace mouth of the mixing car, avoids the safety hidden danger of the loading and unloading operation of the heat insulation cover, improves the operation efficiency, and ensures the heat insulation effect of the fault maintenance of the mixing car.

Claims

1. A hook device for loading and unloading a heat-insulating cover of a mixing car furnace mouth, characterized in that: The device comprises a circular ring, a limiting plate, a shackle, a hook, a spring, an upper rod, a lower rod and a pin shaft, the limiting plate is arranged on both sides of the circular ring, the shackle connects the circular ring and the hook, the hook is provided with an arc-shaped long groove in the middle, the pin shaft is located in the arc-shaped long groove and slides, one end of the upper rod and the lower rod is respectively fixedly connected with both ends of the pin shaft, both ends of the spring are respectively connected with the upper part of the hook and the other end of the upper rod, the upper rod is located at the hook opening position of the hook, and the lower rod is located at the hook bottom position of the hook.

2. The hook device for loading and unloading the heat-insulating cover of the mixing car furnace mouth according to claim 1, characterized in that: The lower rod is an arc-shaped rod, and an arc-shaped protruding surface faces the hook opening of the hook.

3. The hook device for loading and unloading the heat-insulating cover of the mixing car furnace mouth according to claim 1 or 2, characterized in that: The device further comprises a reinforcing plate, and the reinforcing plate is arranged on the limiting plates on both sides of the circular ring through bolts.

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