Furnace door anti-falling mechanism for smelting furnace

Abstract

The furnace door anti-falling mechanism for the smelting furnace comprises a furnace body and a furnace door, the anti-falling mechanism is installed between the furnace body and the furnace door, the anti-falling mechanism comprises an air cylinder, an overturning plate and a pull rod, the air cylinder and the overturning plate are hinged to the top of the furnace body, the power output end of the air cylinder is rotationally connected with the overturning plate, and the pull rod is vertically installed at the top of the furnace door. The pull rod is provided with a clamping groove matched with the turnover plate. When the furnace door lifts and drives the pull rod to ascend, the anti-falling mechanism utilizes the air cylinder to drive the overturning plate to overturn, the overturning plate is clamped into the clamping groove in the pull rod, the pull rod is locked, the phenomenon that the furnace door falls suddenly when external equipment for lifting the furnace door breaks down or is damaged is prevented, accidents are reduced, and the safety of the furnace door is improved. And the problem that a traditional chain is easy to break during falling prevention is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-falling of smelting furnace doors, in particular to an anti-falling mechanism for smelting furnace doors. Background Art

[0002] Existing smelting furnaces, including but not limited to aluminum and iron smelting furnaces, and holding furnaces, all use hydraulic cylinders to drive the furnace door to rise and fall. The furnace door anti-falling mechanism is composed of two chains. When the furnace door is in a lifted and held state, the lifting hydraulic cylinder needs to be constantly stressed. When the furnace door is in an ascending state, the chain is in a relaxed state. Once the lifting power is suddenly lost (such as a failure or damage to the hydraulic system), the furnace door will still fall from a height until the chain is tightened. Due to the heavy weight of the furnace door, when the chain is suddenly tightened by the falling furnace door, the chain will also be subjected to a very large impact force and may also break. In this case, it may also cause harm to people or objects around it. Therefore, there is an urgent need for a furnace door anti-falling mechanism that can prevent the furnace door from falling when it is being lifted. Utility Model Content

[0003] The purpose of the utility model is to provide a furnace door anti-falling mechanism for a smelting furnace, so as to solve the problem that the traditional furnace door anti-falling method uses a chain. When the furnace door suddenly falls, the chain will be subjected to a very large impact force and is very likely to break.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A furnace door anti-falling mechanism for a smelting furnace comprises a furnace body and a furnace door, an anti-falling mechanism is installed between the furnace body and the furnace door, the anti-falling mechanism comprises a cylinder, a flip plate and a pull rod, the cylinder and the flip plate are both hinged to the top of the furnace body, the power output end of the cylinder is rotatably connected to the flip plate, the pull rod is vertically installed on the top of the furnace door, and the pull rod is provided with a slot adapted to the flip plate.

[0006] A further technical solution is that load-bearing ear plates are symmetrically arranged on both sides of the turnover plate.

[0007] A further technical solution is: an arc-shaped hole adapted to the power output end of the cylinder is provided on the flip plate, the hinge hole of the flip plate is eccentrically arranged and close to the cylinder, and the hinge hole of the flip plate is located outside the arc-shaped hole in the vertical direction.

[0008] A further technical solution is that an anti-slip depression is provided on the top surface of the flip plate that is adapted to the pull rod.

[0009] A further technical solution is that a transition wedge surface is provided on the side of the flip plate that matches the pull rod.

[0010] A further technical solution is that a fall prevention chain is provided between the furnace body and the furnace door.

[0011] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0012] The utility model proposes a furnace door anti-falling mechanism for a smelting furnace. When the furnace door is lifted up with a pull rod, the anti-falling mechanism uses a cylinder to drive a flip plate to flip, and the flip plate is clamped into a slot on the pull rod, thereby locking the pull rod. This prevents the furnace door from suddenly falling due to malfunction or damage of equipment that lifts the furnace door from the outside, reduces the occurrence of accidents, and overcomes the problem that traditional chain anti-falling mechanisms are easy to break. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of a smelting furnace and a furnace door of the present utility model.

[0014] Figure 2 The utility model is a structural schematic diagram of a furnace door anti-falling mechanism for a smelting furnace.

[0015] Figure 3 For this utility model Figure 2 A schematic diagram of the structure in another state.

[0016] Figure 4 For this utility model Figure 2 Schematic diagram of the structure with the anti-fall mechanism in operation.

[0017] Figure 5 For this utility model Figure 2 Schematic diagram of the locking structure of the anti-fall mechanism.

[0018] Figure 6 This utility model Figure 2 Schematic diagram of the structure of the middle flip board.

[0019] Figure 7 This utility model Figure 6 Schematic diagram of the structure of the arc hole on the middle flip plate.

[0020] Figure numerals: 1. furnace body; 2. furnace door; 3. anti-fall mechanism; 4. cylinder; 5. flip plate; 6. pull rod; 7. slot; 8. load-bearing ear plate; 9. arc-shaped hole; 10. anti-slip depression; 11. transition wedge surface; 12. anti-fall chain. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0025] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is typically placed when in use, or are the orientations or positional relationships commonly understood by those skilled in the art. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0027] Example 1:

[0028] This embodiment Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, a furnace door anti-falling mechanism for a smelting furnace includes a furnace body 1 and a furnace door 2. An anti-falling mechanism 3 is installed between the furnace body 1 and the furnace door 2. The anti-falling mechanism 3 includes a cylinder 4, a flip plate 5 and a pull rod 6. The cylinder 4 and the flip plate 5 are both hinged at the top of the furnace body 1. The power output end of the cylinder 4 is rotatably connected to the flip plate 5. The pull rod 6 is vertically installed at the top of the furnace door 2. The pull rod 6 is provided with a slot 7 adapted to the flip plate 5.

[0029] When the furnace door 2 is lifted by the lifting mechanism (usually a hydraulic cylinder), the pull rod 6 rises with the furnace door 2. After the pull rod 6 rises to a certain height, the cylinder 4 extends to drive the flip plate 5 to flip, and the flip plate 5 is stuck in the slot 7 on the pull rod to lock the pull rod 6; when the furnace door 2 needs to be lowered, the lifting mechanism first moves upward slightly to make the top of the slot 7 of the pull rod 6 higher than the flip plate 5, and then the cylinder 4 retracts to disengage the flip plate 5 from the slot 7 of the pull rod 6, and then the lifting mechanism starts to move the furnace door 2 downward, and the furnace door 2 drops to the working position.

[0030] Preferably, load-bearing lugs 8 are symmetrically provided on both sides of the flip plate 5 .

[0031] The load-bearing lugs 8 are used for weighing and limiting the position of the flip plate 5 .

[0032] Example 2:

[0033] Based on the above embodiments, this embodiment Figure 7 As shown, an arc-shaped hole 9 is provided on the flip plate 5 to match the power output end of the cylinder 4. The hinge hole of the flip plate 5 is eccentrically arranged and close to the cylinder, and the hinge hole of the flip plate 5 is located outside the arc-shaped hole 9 in the vertical direction.

[0034] When the furnace door drops to the working position, the cylinder 4 extends. At this time, it does not play a limiting role such as tightening on the flip plate 5. Under the action of its own center of gravity, the flip plate 5 deflects and is in a position inclined toward the pull rod 6. As long as the pull rod 6 rises, the flip plate 5 can automatically enter the slot 7 of the pull rod 6 without interfering with the rising of the pull rod 6, waiting for the pull rod 6 to lose the upward force, thus completing self-locking; this action is repeated to complete the locking and anti-falling function of the furnace door each time it is lifted.

[0035] Preferably, an anti-slip recess 10 is provided on the top surface of the flip plate 5 that matches the pull rod 6 .

[0036] Ensure that the pull rod 6 and the flip plate 5 are in a firmly engaged state.

[0037] Preferably, a transition wedge surface 11 is provided on the side of the flip plate 5 that matches the pull rod 6 .

[0038] The transition wedge surface 11 does not affect the rising of the pull rod 6 when the flip plate 5 is in a gravity deflection state.

[0039] Preferably, an anti-fall chain 12 is provided between the furnace body 1 and the furnace door 2 .

[0040] Further ensure the anti-fall effect.

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A furnace door anti-fall mechanism for a smelting furnace, comprising a furnace body (1) and a furnace door (2), characterized in that: An anti-fall mechanism (3) is installed between the furnace body (1) and the furnace door (2), and the anti-fall mechanism (3) includes a cylinder (4), a flip plate (5) and a pull rod (6). The cylinder (4) and the flip plate (5) are both hinged to the top of the furnace body (1), and the power output end of the cylinder (4) is rotatably connected to the flip plate (5). The pull rod (6) is vertically installed on the top of the furnace door (2), and a slot (7) adapted to the flip plate (5) is provided on the pull rod (6).

2. The furnace door anti-falling mechanism for a smelting furnace according to claim 1, characterized in that: Load-bearing lug plates (8) are symmetrically provided on both sides of the turnover plate (5).

3. The furnace door anti-falling mechanism for a smelting furnace according to claim 1, characterized in that: The flip plate (5) is provided with an arc-shaped hole (9) adapted to the power output end of the cylinder (4), the hinge hole of the flip plate (5) is eccentrically arranged and close to the cylinder, and the hinge hole of the flip plate (5) is located outside the arc-shaped hole (9) in the vertical direction.

4. The furnace door anti-falling mechanism for a smelting furnace according to claim 1, characterized in that: An anti-slip recess (10) is provided on the top surface of the flip plate (5) that matches the pull rod (6).

5. The furnace door anti-falling mechanism for a smelting furnace according to claim 1, characterized in that: A transition wedge surface (11) is provided on the side of the flip plate (5) that matches the pull rod (6).

6. The furnace door anti-falling mechanism for a smelting furnace according to claim 1, characterized in that: An anti-fall chain (12) is provided between the furnace body (1) and the furnace door (2).

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