Simple anti-falling chain mechanical locking device for industrial furnace door

Abstract

The invention relates to the technical field of mechanical locking devices, in particular to an industrial furnace door simple anti-falling chain mechanical locking device which comprises a furnace door frame bottom plate and two parallel base plates connected to the furnace door frame bottom plate, bearing parts are arranged on the upper surfaces of the two base plates, and the top surfaces of the two bearing parts are located at the same height. The chain mechanical locking device further comprises a pin shaft horizontally arranged on the top faces of the two bearing parts, and the pin shaft penetrates through a gap of the chain and then is borne by the two bearing parts. Through cooperation of the bearing parts and the pin shafts on the two base plates, the pin shafts penetrate through gaps of the chains and then are borne by the two bearing parts, rapid mechanical locking of the chains is achieved, the chains can be locked while the lifting height of the furnace door is not limited, and the furnace door is prevented from falling.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical locking devices, in particular to a simple anti-falling chain mechanical locking device for an industrial furnace door. Background Art

[0002] When inspecting the door of an industrial furnace, the hydraulic or electric transmission device of the furnace door cannot effectively lock the furnace door, and there is a risk of the furnace door sliding down or falling. The traditional mechanical locking device to prevent the furnace door from falling is installed between the furnace door and the chain, such as setting a pin hole at the end of the chain (near the connection with the furnace door); the furnace door needs to be lifted to the highest point, and the lock hole corresponds to the pin hole of the steel structure below the furnace door bearing seat. The installation pin shaft is inserted and pulled out to mechanically lock the furnace door to ensure that the furnace door does not fall. However, after long-term high-temperature use, the chain plate is stretched, resulting in the lock and the frame pin hole not corresponding, and the pin shaft cannot be inserted or pulled out. Based on this, the present invention provides a simple anti-fall chain mechanical locking device for the industrial furnace door. Summary of the Invention

[0003] In response to the above technical problems, the present invention overcomes the shortcomings of the prior art and provides a simple anti-falling chain mechanical locking device for industrial furnace doors. The pin shaft passes through the gap in the chain and is supported by two bearing parts, thereby realizing rapid mechanical locking of the chain. The chain can be locked without limiting the lifting height of the furnace door, preventing the furnace door from falling, thereby serving as a double insurance function.

[0004] The simple anti-fall chain mechanical locking device for the industrial furnace door in this scheme includes a furnace door frame bottom plate and two parallel pads connected thereto, the upper surfaces of the two pads are provided with a bearing part, the top surfaces of the two bearing parts are at the same height, and the two pads are respectively arranged on the inner and outer sides of the chain, and the chain mechanical locking device also includes a pin shaft horizontally placed on the top surfaces of the two bearing parts, so that the pin shaft is supported by the two bearing parts after passing through the gap in the chain.

[0005] Furthermore, it also includes an angle steel, and the two ends of the angle steel are respectively connected to two pads.

[0006] Furthermore, two angle steels are symmetrically arranged.

[0007] Furthermore, both ends of the angle steel are welded to two pads respectively.

[0008] Furthermore, the pads are vertically arranged on the bottom plate of the furnace door frame.

[0009] Furthermore, the distance between the two pads is 100 mm.

[0010] The beneficial effects of the present invention are: The present invention provides a simple anti-falling chain mechanical locking device for industrial furnace doors. Through the cooperation of the bearing parts and the pin shaft on the two pads, the pin shaft passes through the gap of the chain and is carried by the two bearing parts, thereby realizing rapid mechanical locking of the chain. The chain can be locked without limiting the lifting height of the furnace door to prevent the furnace door from falling, and it has a double insurance function. It solves the problems that the traditional furnace door mechanical locking device is affected by the stroke of the furnace door hydraulic cylinder and is inconvenient to install and remove, and the pin shaft is easy to deform, and effectively prevents maintenance personnel around the furnace door from being injured by the falling furnace door. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a front structural diagram of a chain mechanical locking device in a specific embodiment of the present invention; Figure 2 It is a side structural diagram of a chain mechanical locking device in a specific embodiment of the present invention; In the figure: 1. Chain; 2. Pad; 3. Pin; 4. Angle steel; 5. Furnace door frame bottom plate. DETAILED DESCRIPTION

[0012] The present invention is mainly applicable to a quick solution for locking and preventing the furnace door of an industrial heating furnace from falling. Specifically, a locking device is designed on the furnace door chain, which can lock the chain to prevent the furnace door from falling without limiting the lifting height of the furnace door, thus playing a double insurance function. In the original design structure, a pin hole is generally set at the end of the chain (near the furnace door connection); the furnace door needs to be lifted to the highest point, and the lock hole corresponds to the pin hole of the steel structure below the furnace door bearing seat. The installation pin shaft is inserted and removed to mechanically lock the furnace door to ensure that the furnace door does not fall. Due to long-term high-temperature use, the chain plate is elongated, causing the lock to not correspond to the frame pin hole, and the pin shaft cannot be inserted or removed. The frame pin hole needs to be enlarged, but the steel plate at the frame pin hole position is thickened, and the outer position is suspended, making it difficult to cut on site.

[0013] The industrial furnace door in this solution is a simple anti-fall chain mechanical locking device, such as Figure 1 and Figure 2 As shown, it includes a furnace door frame bottom plate 5 and two parallel pads 2 vertically connected thereto, the distance between the two pads 2 is 100 mm, the upper surfaces of the two pads 2 are provided with bearing parts, the top surfaces of the two bearing parts are at the same height, and the two pads 2 are respectively arranged on the inner and outer sides of the chain 1, and the chain mechanical locking device also includes a pin shaft 3 horizontally placed on the top surfaces of the two bearing parts, so that the pin shaft 3 is supported by the two bearing parts after passing through the gap of the chain 1.

[0014] In a specific embodiment of the present invention, the simple anti-falling chain mechanical locking device for industrial furnace doors also includes two symmetrically arranged angle steels 4, and two pads 2 are welded to both ends of each angle steel 4 to improve the overall stability of the device.

[0015] It is understood that the pin 3 in this application is manufactured according to the actual chain specifications used on site, and a screw of the same diameter can also be used, which reduces the cost of modification. By solving the problems of the traditional furnace door mechanical locking device, such as the inconvenience of installation and removal due to the stroke of the furnace door hydraulic cylinder and the easy deformation of the pin, the cost of modification is reduced, the maintenance and construction steps are simplified, and the equipment damage caused by misoperation is eliminated.

[0016] In addition to the above embodiments, the present invention may also have other implementations. Any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection required by the present invention.

Claims

1. A simple anti-fall chain mechanical locking device for industrial furnace doors, characterized in that: The invention comprises a furnace door frame bottom plate (5) and two parallel pads (2) connected thereto, wherein the upper surfaces of the two pads (2) are both provided with a bearing portion, the top surfaces of the two bearing portions are located at the same height, and the two pads (2) are respectively provided on the inner and outer sides of the chain (1), and the chain mechanical locking device further comprises a pin shaft (3) horizontally arranged on the top surfaces of the two bearing portions, so that the pin shaft (3) is supported by the two bearing portions after passing through the gap of the chain (1).

2. The chain mechanical locking device according to claim 1, characterized in that: It also includes an angle steel (4), with two ends of the angle steel (4) respectively connected to two pads (2).

3. The chain mechanical locking device according to claim 2, characterized in that: Two angle steels (4) are symmetrically arranged.

4. The chain mechanical locking device according to claim 2, characterized in that: Both ends of the angle steel (4) are welded to the two backing plates (2) respectively.

5. The chain mechanical locking device according to claim 1, characterized in that: The pads (2) are all vertically arranged on the furnace door frame bottom plate (5).

6. The chain mechanical locking device according to claim 1, characterized in that: The distance between the two pads (2) is 100 mm.

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