Air door locking and unlocking mechanism

Abstract

An air door locking and unlocking mechanism comprises a locking mechanism and an unlocking mechanism. The unlocking mechanism is arranged in the middle of the upper surfaces of the two long sliding blocks of the locking mechanism; the unlocking mechanism comprises a main shaft and a stop block; the main shaft is in a split type and comprises a fixed shaft fixedly arranged on the machine frame and a movable shaft arranged on the fixed shaft in a sleeved mode, and the movable shaft is connected with the fixed shaft in a sliding mode. A stop block is rotationally arranged on the movable shaft; and a push rod is arranged between the fixed shaft and the movable shaft. According to the locking mechanism, a blank in the market is filled through a simple structure, and a new structural form is provided for unlocking of the locking mechanism, that is, the stop block part is separated from the long sliding blocks during unlocking, so that the long sliding blocks on the two sides are separated from limiting. And particularly, the equipment is not stressed due to opening and closing of the air door on the basis of the movable shaft and the fixed shaft, and workpiece deformation and connection position deformation based on the movement direction of the movable shaft and the fixed shaft are avoided, so that the operation safety of the equipment can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of air door safety control equipment, in particular to an air door locking and unlocking mechanism. Background Art

[0002] The main equipment for underground ventilation is the air door. Due to the strong wind pressure, in order to ensure ventilation safety, a locking mechanism is generally set between the spaced air doors to ensure the sequential opening and closing of the air doors, that is, generally, it is necessary to avoid the simultaneous opening and closing of the spaced air doors.

[0003] However, for the safety of staff, the locking mechanism generally needs to be equipped with an unlocking mechanism for special situations such as personnel escape. The unlocking mechanisms of the existing locking devices are, for example, an unlocking device for a coal mine air door lock disclosed in Chinese Patent No. 201720436083.8, and another unlocking device for a coal mine air door lock disclosed in Chinese Patent No. 202121153116.0. The implementation principles of the above unlocking devices are basically the same, that is, a detachable structural member is configured between the steel cable and the long slider of the locking mechanism to achieve the assembly and disassembly between the steel cable and the long slider. The disadvantages of this method are also obvious, that is, the connecting member between the steel cable and the long slider is stressed. Specifically, when the air door is opened, the connecting member of the steel cable driving the long slider to displace will be subjected to tensile force and shear force, and due to the large weight of the long slider, the pin locking mechanism parts are prone to deformation and damage after long-term use, resulting in an increase in the maintenance frequency, especially affecting the use safety, that is, the pin locking parts cannot be combined or disassembled after deformation. Also, since the above pin locking mechanism completely relies on manual insertion and extraction, its safety risk will correspondingly increase. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an air door locking and unlocking mechanism with a simpler structure, based on the displacement of the blocking block, capable of unlocking the pin lock of the locking mechanism in special situations and being safer to use.

[0005] The device includes a locking mechanism and an unlocking mechanism;

[0006] The locking mechanism includes a frame, and two long sliders are slidably arranged in the frame. The long sliders are in the form of long cylinders; the upper parts of the long sliders are connected to the air doors on both sides of the device through steel ropes;

[0007] An unlocking mechanism is arranged at the middle position on the upper surfaces of the two long sliders;

[0008] The unlocking mechanism includes a main shaft and a blocking block; the main shaft is in a split form, including a fixed shaft fixedly arranged on the frame and a moving shaft sleeved on the fixed shaft. The moving shaft is slidably connected to the fixed shaft; a blocking block is rotatably arranged on the moving shaft;

[0009] A push rod is arranged between the fixed shaft and the moving shaft, and the push rod is power-connected to a power module.

[0010] That is to say, the piston part and the base part of the push rod are respectively connected to the fixed shaft and the moving shaft. When the push rod moves, it can drive the moving shaft to move. The moving shaft translates, so that the blocking part disengages from the space above the two long sliders, that is, the interlock between the two air dampers is released.

[0011] The beneficial effects of the present utility model are as follows: The present utility model fills a gap in the market with a simple structure, provides a new structural form for unlocking the locking mechanism, that is, when unlocking, the blocking part disengages from above the long slider, and based on this, the two long sliders on both sides are disengaged from the limit. In particular, for this device, since the moving shaft and the fixed shaft are not stressed due to the opening and closing of the air damper, there will be no deformation of the workpiece itself and the connection position based on its moving direction, so the operating safety of the device can be greatly improved. Description of the Drawings

[0012] Figure 1 is the overall structural schematic diagram of a kind of air damper locking and unlocking mechanism described in the present utility model;

[0013] Figure 2 is the operating principle structural schematic diagram of a kind of air damper locking and unlocking mechanism from a sectional view perspective described in the present utility model;

[0014] Figure 3 is Figure 2 the partial enlarged view of

[0015] Reference Signs:

[0016] 1 - Frame 2 - Long slider 3 - Main shaft 4 - Push rod 5 - Block

[0017] 31 - Fixed shaft 32 - Moving shaft 51 - Limit connecting piece

[0018] The realization, functional characteristics and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the drawings. Detailed Embodiments

[0019] Referring to Figure 1 、 Figure 2 and Figure 3 a kind of air damper locking and unlocking mechanism described in the present utility model includes a locking mechanism and an unlocking mechanism;

[0020] The locking mechanism includes a frame 1, and two long sliders 2 are slidably arranged in the frame 1. The long sliders 2 are in a cylindrical form; the upper parts of the long sliders 2 are connected to the air dampers on both sides of the device through steel ropes; the above setting form is a widely used configuration form of the air damper interlock mechanism in the prior art, and will not be elaborated here;

[0021] An unlocking mechanism is arranged at the center position on the upper surfaces of the two long sliders 2;

[0022] The unlocking mechanism includes a main shaft 3 and a blocking block 5; the main shaft 3 is in a split form, including a fixed shaft 31 fixedly arranged on the frame 1 and a moving shaft 32 sleeved on the fixed shaft 31, and the moving shaft 32 is slidably connected with the fixed shaft 31; a blocking block 5 is rotatably arranged on the moving shaft 32;

[0023] A push rod 4 is arranged between the fixed shaft 31 and the moving shaft 32, and the push rod 4 is power-connected to a power module.

[0024] Further, the blocking block 5 is in the form of an eccentric block.

[0025] That is to say, the piston part and the base part of the push rod 4 are respectively connected with the fixed shaft 31 and the moving shaft 32. When the push rod 4 moves, it can drive the moving shaft 32 to move. The moving shaft 32 translates, so that part of the blocking block 5 disengages from the space above the two long sliders 2, that is, the interlock between the two air doors is released. At the same time, since the moving shaft 32 and the fixed shaft 31 are not stressed due to the opening and closing of the air doors, no deformation of the workpiece itself and the connection position in the movement direction will occur, so the operation safety of the equipment can be greatly improved.

[0026] Further, the tail end of the moving shaft 32 passes through the frame 1 and is arranged outside.

[0027] Further, the fixed shaft 31 and the moving shaft 32 are hollow inside, and the push rod 4 is arranged inside the main shaft 3;

[0028] Both ends of the push rod 4 are fixedly connected with the fixed shaft 31 and the moving shaft 32 respectively through pins.

[0029] The achieved effect is to optimize the assembly form under the condition of a reasonable configuration structure.

[0030] Further, the blocking block 5 is rotatably sleeved on the moving shaft 32, and limiting connecting pieces 51 are respectively arranged on both sides of the blocking block 5.

[0031] Preferably, the limiting connecting pieces 51 are snap rings, that is, grooves are milled on the moving shaft 32, and snap rings are arranged in the groove bodies, and the snap rings on both sides form a constraint on the lateral displacement of the blocking block 5.

[0032] Further, the push rod 4 is an electric push rod, and the power module includes an externally connected power supply and a backup battery.

[0033] The achieved effect is that the blocking block 5 can still be disengaged from the upper part of the long slider 2 through the backup power supply in the case of power failure.

[0034] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic features of the present utility model, the present utility model can be implemented in other specific forms. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims.

[0035] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A damper locking and unlocking mechanism, comprising a locking mechanism and an unlocking mechanism; the locking mechanism comprises a frame, in which two long sliders are slidably arranged, and the upper part of the long sliders is connected to the dampers on both sides of the equipment through steel ropes; characterized in that: An unlocking mechanism is arranged at the center position above the two long slide blocks; The unlocking mechanism comprises a main shaft and a blocking block; the main shaft is in a split form, comprising a fixed shaft fixedly arranged on the frame, and a moving shaft sleeved on the fixed shaft, the moving shaft and the fixed shaft are slidably connected; a blocking block is rotatably arranged on the moving shaft; A push rod is arranged between the fixed shaft and the moving shaft, and the push rod is dynamically connected to the power module.

2. A damper locking and unlocking mechanism according to claim 1, characterized in that: The blocking block is in the form of an eccentric block.

3. A damper locking and unlocking mechanism according to claim 1, characterized in that: The tail end of the moving shaft passes through the frame for arrangement.

4. A damper locking and unlocking mechanism according to claim 1, characterized in that: The fixed shaft and the moving shaft are hollow inside, and the push rod is arranged inside the main shaft; The two ends of the push rod are fixedly connected with the fixed shaft and the movable shaft through pins respectively.

5. The damper locking and unlocking mechanism according to claim 1, characterized in that: The blocking block is rotatably sleeved on the moving shaft, and limited position connecting pieces are respectively arranged on both sides of the blocking block.

6. A damper locking and unlocking mechanism according to claim 1, characterized in that: The push rod is an electric push rod, and the power module includes an external power supply and a backup battery.

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