Petal type self-resetting vertical shaft explosion door

Abstract

The utility model discloses a petal type self-resetting vertical shaft explosion door, which relates to the field of vertical shaft explosion doors, and comprises a mounting rack, the outer side of the bottom of the mounting rack is rotatably connected with a plurality of petal explosion doors covered on inclined rods of the mounting rack through hinges, and a plurality of inclined planes of the mounting rack are fixedly connected with a top frame at the center above the mounting rack. A mounting frame is fixedly mounted at the top of the top frame, a locking mechanism extending into an inner cavity of the mounting frame is mounted at the top of the mounting frame, and a limiting sensing mechanism extending into the top frame is mounted at the top of the top frame. According to the petal anti-explosion door, the locking mechanism and the limiting and sensing mechanism which are integrated are arranged, synchronous unlocking of a plurality of petal anti-explosion doors can be achieved, the rotating angle of the locking mechanism can be limited through the sensing and limiting mechanism, and compared with an existing locking structure, the number and the structure of the petal anti-explosion door are simpler, and errors are not prone to occurring.

Description

Petal-shaped self-resetting vertical shaft explosion-proof door Technical Field

[0001] This utility model relates to the field of explosion-proof doors for vertical shafts, specifically a petal-shaped self-recovering explosion-proof door for vertical shafts. Background Technology

[0002] Explosion-proof doors for mine vertical ventilation shafts are explosion-proof facilities installed at the entrance of mine return air shafts and are an important component of mine ventilation systems.

[0003] In existing technologies, vertical explosion-proof doors for manholes include two types: integrated and petal-shaped. When normally closed, they are locked by a locking mechanism. In the event of a gas explosion inside the manhole, the built-in pressure sensor sends a signal to the controller, which then unlocks the locking mechanism. At this point, under the explosion pressure, the explosion-proof door can automatically open to relieve pressure. However, existing explosion-proof door locking mechanisms are generally multiple, each locking a corresponding explosion-proof door. This method is prone to damage to individual explosion-proof doors and their corresponding locking mechanisms when control is out of sync. Summary of the Invention

[0004] The purpose of this utility model is to provide a petal-shaped self-healing vertical shaft explosion-proof door in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a petal-shaped self-recovering vertical shaft explosion-proof door, including a mounting frame. Multiple petal-shaped explosion-proof doors covering the inclined rods of the mounting frame are rotatably connected to the bottom outer side of the mounting frame via hinges. Multiple inclined surfaces of the mounting frame are fixedly connected to a top frame at the center of the top of the mounting frame. A support frame is fixedly installed on the top of the top frame. A locking mechanism extending into the inner cavity of the support frame is installed on the top of the support frame. A limit sensing mechanism extending into the interior of the top frame is installed on the top of the top frame.

[0006] As a further embodiment of this utility model: the locking mechanism includes a forward and reverse motor fixedly installed on the top of the support frame, the output shaft of the forward and reverse motor passing through the top plate of the support frame and extending to the bottom of the top plate of the support frame, a locking plate being coaxially fixedly installed at the bottom end of the output shaft of the forward and reverse motor, and a plurality of outwardly protruding locking protrusions integrally formed on the outer side of the locking plate, the number of the locking plates being equal to the number of the petal-shaped explosion-proof door.

[0007] As a further improvement of this utility model: a connecting frame is fixedly installed on the top of the petal-shaped explosion-proof door, the horizontal plate of the connecting frame extends to the bottom end of the locking plate and is located below the top frame, and an upwardly protruding lifting ring is fixedly installed on the top of the connecting frame.

[0008] As a further embodiment of this utility model: the limiting sensing mechanism includes a limiting post integrally formed on the bottom end of the locking protrusion plate and a limiting groove formed on the top of the top frame and recessed downwards. The limiting post is movably connected to the inner wall of the limiting groove, and the limiting post and the limiting groove cooperate to limit the maximum rotation angle of the locking plate.

[0009] As a further embodiment of this utility model: the limiting sensing mechanism further includes receiving grooves opened inside the top frame and located at both ends of one of the limiting grooves. Sliding switches are slidably installed on the inner wall of the receiving grooves. The ends of the two sliding switches that are close to each other penetrate into the inner cavity of the limiting groove. A return spring is fixedly connected between the end of the sliding switch located inside the receiving groove and the closed end of the receiving groove.

[0010] As a further embodiment of this utility model: a first conductive piece is fixedly installed at the contact position between the receiving groove and the wide end face of the sliding switch, and a second conductive piece is installed on the wide end face of the sliding switch. The first conductive piece is electrically connected to the power supply through a wire, and the second conductive piece is electrically connected to the forward and reverse motor through a wire.

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

[0012] 1. By setting an integrated locking mechanism and limit sensing mechanism, multiple petal-shaped explosion-proof doors can be unlocked simultaneously. The limit sensing mechanism can limit the rotation angle of the locking mechanism. Its number and structure are simpler than existing locking structures and are less prone to errors. Attached Figure Description

[0013] Figure 1 is a schematic diagram of the structure of this utility model;

[0014] Figure 2 is a schematic diagram of the installation of the locking mechanism of this utility model;

[0015] Figure 3 is a schematic diagram of the opening of the limiting groove of this utility model;

[0016] Figure 4 is a schematic diagram of the installation of the limit sensing mechanism of this utility model.

[0017] In the diagram: 1. Mounting bracket; 2. Petal-shaped explosion-proof door; 3. Top frame; 4. Support frame; 5. Connecting frame; 6. Locking plate; 7. Lifting ring; 8. Forward and reverse motor; 9. Limit groove; 10. Limit post; 11. Receiving groove; 12. Slide switch; 13. Return spring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please refer to Figures 1 to 4. In this embodiment of the utility model, the petal-shaped self-resetting vertical shaft explosion-proof door includes a mounting frame 1. Multiple petal-shaped explosion-proof doors 2 are rotatably connected to the bottom outer side of the mounting frame 1 via hinges, covering the inclined rods of the mounting frame 1. Multiple inclined surfaces of the mounting frame 1 are fixedly connected to a top frame 3 at the center of the top of the mounting frame 1. A support frame 4 is fixedly installed on the top of the top frame 3. A locking mechanism extending into the inner cavity of the support frame 4 is installed on the top of the support frame 4. A limit sensing mechanism extending into the interior of the top frame 3 is installed on the top of the top of the top frame 3. A connecting frame 5 is fixedly installed on the top of the petal-shaped explosion-proof door 2. The horizontal plate of the connecting frame 5 extends to the bottom end of the locking plate 6 and is located below the top frame 3. An upwardly protruding lifting ring 7 is fixedly installed on the top of the connecting frame 5.

[0020] In this embodiment: First, under normal conditions, the locking mechanism is in the closed state, which is used to limit the multiple petal explosion-proof doors 2 to prevent them from opening. When it is necessary to open the petal explosion-proof door 2, the locking mechanism is unlocked by controlling it. At this time, the locking mechanism can be misaligned with the top of the connecting frame 5, and the connecting frame 5 can have space to move upward. At this time, the power device (such as a hydraulic cylinder) is started. The power device is connected to the lifting ring 7 through a steel cable, and the steel cable passes through the top of the fixed pulley and is then connected to the lifting ring 7. When the power device is lifting, it can pull the petal explosion-proof door 2 to open or close through the steel cable.

[0021] Please refer to Figure 3 for details. The locking mechanism includes a forward and reverse motor 8 fixedly installed on the top of the support frame 4. The output shaft of the forward and reverse motor 8 passes through the top plate of the support frame 4 and extends to the bottom of the top plate of the support frame 4. A locking plate 6 is coaxially fixedly installed at the bottom end of the output shaft of the forward and reverse motor 8. Multiple outwardly protruding locking protrusions are integrally formed on the outer side of the locking plate 6. The number of locking protrusions is equal to the number of petal-shaped explosion-proof doors 2.

[0022] In this embodiment: when the locking mechanism locks the connecting frame 5, the forward and reverse motor 8 is controlled to run in the forward direction. The forward and reverse motor 8 can drive the locking plate 6 to rotate synchronously, and the locking protrusion plate on the outside of the locking plate 6 can rotate synchronously. When the locking plate 6 rotates to the maximum angle, the locking protrusion plate is misaligned with the top of the connecting frame 5, and the lock is released.

[0023] When the petal-shaped explosion-proof door 2 is closed and needs to be locked again, the forward and reverse motor 8 is controlled to run in the opposite direction to drive the locking plate 6 and the locking protruding plate to rotate and reset. At this time, the locking protruding plate is once again located on top of the connecting frame 5, restricting it from rotating upward to open.

[0024] Please refer to Figures 3 and 4 for details. The limit sensing mechanism includes a limit post 10 integrally formed on the bottom end of the locking protrusion plate and a limit groove 9 recessed downward on the top of the top frame 3. The limit post 10 is movably connected to the inner wall of the limit groove 9. The limit post 10 and the limit groove 9 cooperate to limit the maximum rotation angle of the locking plate 6. The limit sensing mechanism also includes a receiving groove 11 located inside the top frame 3 and at both ends of one limit groove 9. A sliding switch 12 is slidably installed on the inner wall of the receiving groove 11. The ends of the two sliding switches 12 that are close to each other penetrate into the inner cavity of the limit groove 9. A return spring 13 is fixedly connected between the end of the sliding switch 12 inside the receiving groove 11 and the closed end of the receiving groove 11. A first conductive plate is fixedly installed at the contact position between the receiving groove 11 and the wide end face of the sliding switch 12. A second conductive plate is installed on the wide end face of the sliding switch 12. The first conductive plate is electrically connected to the power supply through a wire, and the second conductive plate is electrically connected to the forward and reverse motor 8 through a wire.

[0025] In this embodiment: during the unlocking and relocking process of the locking mechanism, the rotating locking protrusion plate drives the limiting post 10 at its bottom end to rotate in the limiting groove 9. When the limiting post 10 rotates, it will gradually approach one end of a sliding switch 12 until it contacts and squeezes. At this time, the sliding switch 12 is forced to move and compress the reset spring 13. When the sliding switch 12 moves, the sliding switch 12 drives the second pad and the first conductive sheet to separate. At this time, the circuit is broken, and the forward and reverse motor 8 can stop running, limiting the maximum rotation angle of the forward and reverse motor 8.

[0026] One set of conductive plates No. 1 and No. 2 are connected in series in the forward rotation circuit of the reversible motor 8, and another set of conductive plates No. 1 and No. 2 are connected in series in the reverse rotation circuit of the reversible motor 8. This can prevent the reversible motor 8 from rotating excessively.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A petal-type self-standing explosion door comprising a mounting frame (1), characterized in that, The bottom outer side of the mounting frame (1) is rotatably connected by a hinge to a plurality of petal-shaped explosion-proof doors (2) covering the inclined rod of the mounting frame (1). The plurality of inclined surfaces of the mounting frame (1) are fixedly connected to a top frame (3) at the center of the top of the mounting frame (1). A support frame (4) is fixedly installed on the top of the top frame (3). A locking mechanism extending into the cavity of the support frame (4) is installed on the top of the support frame (4). A limit sensing mechanism extending into the interior of the top frame (3) is installed on the top of the top frame (3).

2. The petal-style self-standing explosion door according to claim 1, wherein, The locking mechanism includes a forward and reverse motor (8) fixedly installed on the top of the support frame (4). The output shaft of the forward and reverse motor (8) passes through the top plate of the support frame (4) and extends to the bottom of the top plate of the support frame (4). A locking plate (6) is fixedly installed coaxially at the bottom end of the output shaft of the forward and reverse motor (8). Multiple outwardly protruding locking protrusions are integrally formed on the outer side of the locking plate (6). The number of locking plates is equal to the number of the petal-shaped explosion-proof door (2).

3. The petal-shaped self-healing vertical shaft explosion-proof door according to claim 2, characterized in that, A connecting frame (5) is fixedly installed on the top of the petal-shaped explosion-proof door (2). The horizontal plate of the connecting frame (5) extends to the bottom of the locking plate (6) and is located below the top frame (3). An upwardly protruding hanging ring (7) is fixedly installed on the top of the connecting frame (5).

4. The petal-style self-standing explosion door according to claim 3, wherein, The limiting sensing mechanism includes a limiting post (10) integrally formed on the bottom end of the locking protrusion plate and a limiting groove (9) opened on the top of the top frame (3) and recessed downward. The limiting post (10) is movably connected to the inner wall of the limiting groove (9). The limiting post (10) and the limiting groove (9) cooperate to limit the maximum rotation angle of the locking plate (6).

5. The petal-style self-standing explosion door according to claim 4, wherein, The limiting sensing mechanism also includes receiving grooves (11) opened inside the top frame (3) and located at both ends of one of the limiting grooves (9). A sliding switch (12) is slidably installed on the inner wall of the receiving groove (11). The ends of the two sliding switches (12) that are close to each other penetrate into the inner cavity of the limiting groove (9). A return spring (13) is fixedly connected between the end of the sliding switch (12) located inside the receiving groove (11) and the closed end of the receiving groove (11).

6. The petal-shaped self-healing vertical shaft explosion-proof door according to claim 5, characterized in that, A first conductive piece is fixedly installed at the contact position between the receiving groove (11) and the wide end face of the sliding switch (12). A second conductive piece is installed on the wide end face of the sliding switch (12). The first conductive piece is electrically connected to the power supply through a wire, and the second conductive piece is electrically connected to the forward and reverse motor (8) through a wire.

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