Fireproof access hole

Abstract

The utility model relates to the technical field of access holes, in particular to a fireproof access hole. The utility model relates to a turnover frame which comprises an outer frame and an inner frame arranged in the outer frame, the outer frame and the inner frame are connected through a plurality of turnover mechanisms, and when one side of the inner frame is turned over upwards, the turnover mechanisms limit the other end of the inner frame, so that the inner frame is turned over around the positions of the turnover mechanisms. When power equipment in a ceiling or a wall interlayer breaks down and is on fire, the lock rod and the lock plate are separated, the inner frame is pushed, the inner frame is turned over upwards, the connecting hook moves in the turnover opening at the moment, the anti-falling hardware fitting limits the position of the connecting hook, the connecting hook and the anti-falling hardware fitting are prevented from being separated, and the anti-falling hardware fitting is prevented from falling off. And meanwhile, in an emergency, the connecting hook and the overturning opening are separated by increasing the overturning angle of the inner frame, and the outer frame and the inner frame are separated at the moment, so that the influence of the opened inner frame on circuit maintenance of a maintainer is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of inspection ports, and specifically, to a fireproof inspection port. Background Technique

[0002] In modern buildings, for the sake of aesthetics and space saving, wires and some electrical equipment are usually hidden. For example, some wires or electrical equipment are arranged in the interlayers of ceilings or walls. During the use of wires and electrical equipment, faults may sometimes occur. At this time, maintenance personnel need to perform maintenance on them. The emergence of fire inspection ports has provided great convenience for maintenance personnel. Generally, through holes are preset on the ceilings or walls where wires and electrical equipment are arranged, and fire inspection ports are installed in the preset through holes. When faults occur in wires and electrical equipment, maintenance personnel can open the fire inspection ports and enter the passage to perform maintenance on wires and electrical equipment.

[0003] When electrical equipment in the ceiling interlayer or wall catches fire due to a fault, the high temperature generated by the flame will transfer heat to the door panel of the inspection port, and finally cause the overall deformation of the inspection port and it cannot be opened. When personnel carry out fire extinguishing work, it is usually impossible to accurately judge the fire situation, and faults cannot be eliminated and fires cannot be extinguished in time. Therefore, the gravity method is used to open it in a hurry. When opening by gravity, it is easy to cause the overall damage of the ceiling or wall interlayer, and faults and dangers cannot be eliminated in time and effectively. There is also the problem that the work cannot be completed due to incomplete tools. In view of this, we propose a fireproof inspection port. Content of the Utility Model

[0004] The purpose of the utility model is to provide a fireproof inspection port to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides a fireproof inspection port, which includes an outer frame and an inner frame arranged inside the outer frame. The outer frame and the inner frame are connected by a plurality of flipping mechanisms. When one side of the inner frame flips upward, the flipping mechanism restricts the other end of the inner frame, so that the inner frame flips around the position of the flipping mechanism. The flipping mechanism includes a fixing plate and a connecting hook fixed at one end of the fixing plate. A anti-dropping fitting is arranged on one side of the fixing plate. The fixing plate is fixed on the side wall of the inner frame, and the anti-dropping fitting is fixed on the side wall of the outer frame. The anti-dropping fitting blocks the flipping position of the fixing plate, so that the connecting hook hooks the side wall of the outer frame.

[0006] As a further improvement of this technical solution, a through port corresponding to the position of the flipping mechanism is opened on the side wall of one side of the inner frame. One end of the fixing plate is fixed inside the inner frame, and the other end extends to the outside of the inner frame through the through port. The connecting hook is connected to the end of the fixing plate extending to the outside of the inner frame.

[0007] As a further improvement of the technical solution, a flipping opening corresponding to the position of the flipping mechanism is formed on the side wall of one side of the outer frame, and one end of the connecting hook penetrates through the flipping opening and extends to the outside of the outer frame.

[0008] As a further improvement of the technical solution, there is a space between the side wall of the flipping opening close to the flipping direction of the inner frame and the side of the outer frame, and when the connecting hook is inserted into the flipping opening, there is a gap between the flipping opening and the connecting hook, and the size of this gap is smaller than the radius size of the connecting hook.

[0009] As a further improvement of the technical solution, a receiving strip is fixed on the side wall of the inner part of the outer frame far from the flipping direction of the inner frame. When the inner frame is arranged inside the outer frame, the receiving strip receives the inner frame.

[0010] As a further improvement of the technical solution, a locking plate is fixed inside the outer frame on the side far from the flipping mechanism, and a locking rod is rotatably connected to the side of the inner frame far from the flipping mechanism. When the inner frame is arranged inside the outer frame, one end of the locking rod is inserted into the locking plate.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] In this fireproof inspection opening, when the electrical equipment in the ceiling or wall sandwich catches fire due to a fault, by separating the locking rod and the locking plate and pushing the inner frame, the inner frame is flipped upwards. At this time, the connecting hook moves in the flipping opening, preventing the position-limiting of the connecting hook by the anti-separation fitting, avoiding the separation of the connecting hook and the anti-separation fitting, making the inner frame easy to be opened. At the same time, in an emergency, by increasing the flipping angle of the inner frame, the connecting hook is separated from the flipping opening. At this time, the outer frame and the inner frame are separated to avoid the opened inner frame affecting the maintenance of the circuit by the maintenance personnel, facilitating the operation of the maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the whole device of the present utility model when it is closed;

[0014] Figure 2 is a schematic structural diagram of the whole device of the utility model when it is opened;

[0015] Figure 3 is a schematic structural diagram of the outer frame of the utility model;

[0016] Figure 4 is a schematic structural diagram of the inner frame of the utility model;

[0017] Figure 5 is a schematic structural diagram of the flipping mechanism of the utility model.

[0018] The meanings of each label in the figure are as follows:

[0019] 1. Outer frame; 11. Connecting strip; 12. Flipping opening; 13. Locking plate; 2. Inner frame; 21. Through opening; 3. Anti-detachment fitting; 4. Connecting hook; 41. Fixed plate; 5. Locking rod. Specific implementation manner

[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying 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 should not be construed as a limitation to the present utility model.

[0022] Embodiment 1

[0023] Please refer to Figures 1-5 As shown in the figure, this embodiment provides a fireproof inspection opening, including an outer frame 1 and an inner frame 2 arranged inside the outer frame 1. The outer frame 1 is fixed on the ceiling or wall, and the inner frame 2 is installed with the same material as the ceiling or wall. The outer frame 1 and the inner frame 2 are connected by a plurality of flipping mechanisms. The plurality of flipping mechanisms are arranged on one side of the inner frame 2. The flipping mechanisms connect the outer frame 1 and the inner frame 2 together. When one side of the inner frame 2 is flipped upward, the flipping mechanisms restrict the other end of the inner frame 2, so that the inner frame 2 flips around the position of the flipping mechanisms. The flipping mechanisms include a fixed plate 41 and a connecting hook 4 fixed at one end of the fixed plate 41. A anti-detachment fitting 3 is arranged on one side of the fixed plate 41. The fixed plate 41 is fixed on the side wall of the inner frame 2, and the anti-detachment fitting 3 is fixed on the side wall of the outer frame 1. The anti-detachment fitting 3 blocks the flipping position of the fixed plate 41, so that the connecting hook 4 hooks the side wall of the outer frame 1, avoiding the separation of the connecting hook 4 from the outer frame 1 during the flipping process and ensuring the normal flipping of the inner frame 2. When there is a fire caused by a power equipment failure in the ceiling or wall sandwich, the inner frame 2 is opened to facilitate the maintenance personnel to repair the power equipment in the ceiling or wall sandwich through the outer frame 1.

[0024] In order to enable the flipping mechanism to limit the flipping of the inner frame 2 and allow the inner frame 2 to rotate around the flipping mechanism, the position of the structure in the flipping mechanism is restricted. Among them, a through hole 21 corresponding to the position of the flipping mechanism is opened on the side wall of one side of the inner frame 2. The fixing plate 41 is in a right-angled shape. One end of the fixing plate 41 is fixed inside the inner frame 2, and the other end extends to the outside of the inner frame 2 through the through hole 21. The connecting hook 4 is connected to the end of the fixing plate 41 extending to the outside of the inner frame 2. At the same time, a flipping opening 12 corresponding to the position of the flipping mechanism is opened on the side wall of one side of the outer frame 1. When the inner frame 2 is placed inside the outer frame 1, the positions of the flipping opening 12 and the through hole 21 correspond to each other. One end of the connecting hook 4 penetrates through the flipping opening 12 and extends to the outside of the outer frame 1. At the same time, the connecting hook 4 is semi-circular. At the same time, there is a space between the side wall of the flipping opening 12 close to the flipping direction of the inner frame 2 and the side of the outer frame 1. Refer to Figure 3 As shown, that is, there is a certain distance between the bottom side of the flipping opening 12 and the upper side of the outer frame 1. When the inner frame 2 is arranged inside the outer frame 1, one end of the connecting hook 4 contacts the side wall of the outer frame 1 close to the upper side, and the other end of the connecting hook 4 contacts the upper side of the flipping opening 12. At the same time, when the connecting hook 4 is inserted into the flipping opening 12, there is a gap between the flipping opening 12 and the connecting hook 4. The size of this gap is smaller than the radius size of the connecting hook 4. By controlling the size of the flipping opening 12, it is avoided that the flipping opening 12 is too large and the connecting hook 4 disengages from the flipping opening 12 during the flipping process. When the flipping opening 12 is too small, the flipping opening 12 restricts the flipping movement of the connecting hook 4. At the same time, the size of the flipping opening 12 is controlled so that when the inner frame 2 flips, the flipping opening 12 does not block the flipping of the connecting hook 4, ensuring the normal flipping of the inner frame 2.

[0025] At the same time, a receiving strip 11 is fixed on the side wall of the inner part of the outer frame 1 far from the flipping direction of the inner frame 2. When the inner frame 2 is arranged inside the outer frame 1, the receiving strip 11 receives the inner frame 2, ensuring that when the inner frame 2 is placed inside the outer frame 1, through the receiving of the receiving strip 11, the inner frame 2 is stably placed inside the outer frame 1.

[0026] In order to improve the stability of the inner frame 2 placed in the outer frame 1, when the inner frame 2 does not need to be opened, the inner frame 2 will not separate from the outer frame 1. A locking plate 13 is fixed inside the outer frame 1 on the side far from the flipping mechanism. One side of the inner frame 2 far from the flipping mechanism is rotatably connected with a locking rod 5. When the inner frame 2 is arranged inside the outer frame 1, one end of the locking rod 5 is inserted into the locking plate 13. At the same time, after one end of the locking rod 5 penetrates through the locking plate 13, the locking plate 13 is connected through the locking rod 5, so that the other ends of the outer frame 1 and the inner frame 2 are connected together, thereby ensuring the stability of the connection between the outer frame 1 and the inner frame 2. The connection method between the locking rod 5 and the locking plate 13 can be a threaded connection or a clamping connection.

[0027] After the maintenance personnel open the inner frame 2, the inner frame 2 is inclined and arranged on one side of the outer frame 1. When encountering maintenance on one side of the inner frame 2, whether the inner frame 2 is inclined or horizontally arranged, it will block the maintenance of the equipment by the maintenance personnel. In order to facilitate the position of the maintenance personnel, during the flipping process of the connecting hook 4, one end of the connecting hook 4 will gradually move into the flipping port 12. When the flipping angle of the inner frame 2 is relatively large, the connecting hook 4 will separate from the flipping port 12. At this time, the outer frame 1 and the inner frame 2 are separated. The maintenance personnel can remove the inner frame 2, making it convenient for the maintenance personnel to repair the equipment on one side of the inner frame 2 and reducing the difficulty of maintenance for the maintenance personnel.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and do not limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fireproof inspection opening, comprising an outer frame (1) and an inner frame (2) arranged inside the outer frame (1), characterized in that: The outer frame (1) and the inner frame (2) are connected via a plurality of flipping mechanisms. When one side of the inner frame (2) flips upward, the flipping mechanism restricts the other end of the inner frame (2), so that the inner frame (2) flips around the position of the flipping mechanism. The flipping mechanism comprises a fixing plate (41) and a connecting hook (4) fixed to one end of the fixing plate (41). One side of the fixing plate (41) is provided with a metal fitting (3) to prevent it from falling off. The fixing plate (41) is fixed to the side wall of the inner frame (2). The metal fitting (3) to prevent it from falling off is fixed to the side wall of the outer frame (1). The metal fitting (3) to prevent it from falling off blocks the flipping position of the fixing plate (41), so that the connecting hook (4) is hooked to the side wall of the outer frame (1).

2. The fireproof inspection opening according to claim 1, characterized in that: A through hole (21) corresponding to the position of the flip mechanism is provided on a side wall of one side of the inner frame (2); one end of the fixing plate (41) is fixed inside the inner frame (2), and the other end extends to the outside of the inner frame (2) through the through hole (21); and the connecting hook (4) is connected to the end of the fixing plate (41) extending to the outside of the inner frame (2).

3. The fireproof inspection opening according to claim 1, characterized in that: A flip opening (12) corresponding to the position of the flip mechanism is provided on a side wall of one side of the outer frame (1), and one end of the connecting hook (4) passes through the flip opening (12) and extends to the outside of the outer frame (1).

4. The fireproof inspection opening according to claim 3 is characterized in that: A space is left between the side wall of the flip opening (12) close to the flipping direction of the inner frame (2) and the side edge of the outer frame (1); and when the connecting hook (4) is inserted into the flip opening (12), a gap is left between the flip opening (12) and the connecting hook (4), and the size of the gap is smaller than the radius size of the connecting hook (4).

5. The fireproof inspection opening according to claim 1, characterized in that: A receiving strip (11) is fixed on a side wall of the outer frame (1) away from the flipping direction of the inner frame (2); when the inner frame (2) is arranged inside the outer frame (1), the receiving strip (11) receives the inner frame (2).

6. The fireproof inspection opening according to claim 1, characterized in that: A lock plate (13) is fixed inside the outer frame (1) at a side away from the flipping mechanism, and a lock rod (5) is rotatably connected to the inner frame (2) at a side away from the flipping mechanism; when the inner frame (2) is arranged inside the outer frame (1), one end of the lock rod (5) is plugged into the lock plate (13).

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