Remote control fire damper actuator accessory

Abstract

The utility model discloses a remote control fire damper actuator accessory which comprises a bottom plate. The rotating plate is rotatably arranged on the bottom plate and comprises a shaft sleeve, and the shaft sleeve is connected with a blade main shaft of the fire damper and can drive the blade main shaft to rotate synchronously; the shaft sleeve is sleeved with the first torsion spring, one end of the first torsion spring is fixed to the bottom plate, the other end of the first torsion spring acts on the rotating plate, and the rotating plate always has the trend of rotating in the direction of closing the fireproof valve; the temperature sensor is arranged on the bottom plate and provided with a core shaft protruding upwards, and the core shaft shrinks downwards when the temperature exceeds a set value of the temperature sensor; the pendulum shaft is fixedly arranged on the bottom plate; one end of the swing frame is rotatably connected to the swing shaft, and the other end of the swing frame can be blocked by the mandrel; the steel wire rope is connected with the rotating plate and the swing frame and limits the relative positions of the rotating plate and the swing frame. According to the utility model, the design of a positioning plate is abandoned, a conventional spring is replaced by the first torsion spring, the occupied space is obviously reduced, and the compact design is realized.

Description

Technical Field

[0001] The utility model relates to a remote control fire damper actuator, and particularly to an accessory of a remote control fire damper actuator. Background Art

[0002] The remote control fire damper actuator is a key component for a fire protection system in high-rise buildings or large industrial facilities. Its main function is to remotely control the closing of the fire damper during a fire to prevent the spread of fire and smoke. The remote control fire damper actuator generally includes an actuator and an actuator accessory. The actuator and the accessory are connected by a steel wire rope. The accessory is connected to the blade main shaft of the fire damper and can drive the blade main shaft to rotate, thereby realizing the control of the opening and closing of the fire damper blade.

[0003] The Chinese utility model patent "Fire Damper Remote Actuator" with the application number 201120472473.3 discloses an accessory assembly. The accessory assembly has a swing rod. One end of the swing rod is rotatably matched with a bottom plate, and the other end of the swing rod is hinged to one end of a positioning plate. The other end of the positioning plate is provided with a U-shaped notch. A temperature sensor is screwed onto the bottom plate. When the temperature reaches or exceeds the temperature set by the temperature sensor, the head of the core shaft of the temperature sensor retracts into the temperature sensor, disengaging from the U-shaped notch of the positioning plate. The positioning plate loses its resistance effect. At this time, the pulling force of the spring acting on the rocker arm can produce an effect, driving the fire damper to rotate clockwise to close the valve, playing a role in fire prevention. However, the accessory in this patent has a complex structure and a large volume, and there is room for improvement to optimize its space occupation, simplify the structure, and enhance the practicability. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide an accessory for a remote control fire damper actuator with a simple structure and a small volume in view of the above technical status.

[0005] The technical solution adopted by the utility model to solve the above technical problem is as follows: An accessory for a remote control fire damper actuator, characterized by comprising

[0006] A bottom plate;

[0007] A rotating plate rotatably arranged on the bottom plate, including a shaft sleeve in the middle. The shaft sleeve is used to sleeved outside the blade main shaft of the fire damper and can drive the blade main shaft to rotate synchronously;

[0008] A first torsion spring sleeved outside the shaft sleeve. One end of the first torsion spring is fixed to the bottom plate, and the other end acts on the rotating plate, and makes the rotating plate always have a tendency to rotate in the direction of closing the fire damper;

[0009] A temperature sensor arranged on the bottom plate, having a core shaft protruding upward. When the temperature exceeds the set value of the temperature sensor, the core shaft shrinks downward;

[0010] The swing shaft is fixedly arranged on the bottom plate;

[0011] The swing frame, one end of which is installed on the swing shaft in a manner of rotating around the swing shaft, and the other end can be blocked by the protruding core shaft of the temperature sensor;

[0012] The steel wire rope connects the rotating plate and the swing frame and limits their relative positions.

[0013] Preferably, a second torsion spring is sleeved on the swing shaft of the swing frame. One end of the second torsion spring is fixedly connected to the bottom plate, and the other end acts on the swing frame, and makes the swing frame always have a tendency to cross the protruding core shaft of the temperature sensor and swing towards the pulling force direction provided by the steel wire rope. The second torsion spring provides a swinging guiding direction for the swing frame, so that the swing frame can swing actively, rather than only swing under the pulling of the steel wire rope.

[0014] To prevent the rotating plate from rotating excessively when the fire damper is closed emergently, preferably, a limiting post is arranged on the bottom plate, and a corresponding limiting notch is opened on the rotating plate. The limiting post can enter the limiting notch to limit the rotating plate.

[0015] Further, one end of the first torsion spring is buckled with the limiting post and thus fixed to the bottom plate.

[0016] Preferably, a rope wheel is arranged at the end of the swing frame away from the swing frame, and the steel wire rope is wound around the rope wheel to prevent the steel wire rope from disengaging.

[0017] Further, the rope wheel further includes a rope wheel retaining piece. The rope wheel retaining piece is in a U shape with a side opening. The two U-shaped sides are respectively connected to the upper and lower ends of the rope wheel axle, and the U-shaped bottom edge covers the outer periphery of the rope wheel.

[0018] To ensure that the steel wire rope provides more pulling force in the horizontal direction, preferably, the rotating plate includes a swing arm portion extending away from the bushing direction. A pressing plate is arranged on the swing arm portion. The steel wire rope is connected to the end of the swing arm portion and is pressed between the pressing plate and the swing arm portion.

[0019] Specifically, the remote control fire damper actuator accessory has a first state. The first state corresponds to the normal closing state of the fire damper. When in the first state, the first torsion spring is in a natural state, the swing frame abuts against the core shaft of the temperature sensor, and the second torsion spring is in an energy storage state and makes the swing frame have a tendency to rotate in the same direction as the opening direction of the fire damper towards the blade main shaft.

[0020] Specifically, the remote control fire damper actuator accessory also has a second state, which corresponds to the normal open state of the fire damper. When in the second state, the first torsion spring is in an energy storage state and makes the rotating plate have a tendency to rotate in the same direction as the blade main shaft to close the fire damper. The swing frame abuts against the core shaft of the temperature sensor, and the second torsion spring is in an energy storage state and makes the swing frame have a tendency to rotate in the same direction as the blade main shaft to open the fire damper.

[0021] Specifically, the remote control fire damper actuator accessory also has a third state, which corresponds to the emergency close state of the fire damper. When in the third state, the first torsion spring is in a natural state and the second torsion spring is in a natural state.

[0022] The present utility model abandons the traditional positioning plate design and replaces the conventional spring with a first torsion spring. One end of the first torsion spring is fixed to the bottom plate, and the other end acts on the rotating plate, and makes the rotating plate always have a tendency to rotate in the direction of closing the fire damper. This not only simplifies the structure of the remote control fire damper actuator accessory, but also significantly reduces its occupied space and realizes a compact design. In a specific fire emergency scenario, when the environmental temperature exceeds the sensitive threshold preset by the temperature sensor, the core shaft in the temperature sensor will quickly retract, thereby releasing the restriction on the swing frame. The energy stored in the second torsion spring is released, driving the swing frame to swing. The steel wire rope is no longer taut and thus does not apply a constraint to the rotating plate, so that the rotating plate rotates and resets under the elastic force of the first torsion spring, and the sleeve drives the blade main shaft of the fire damper to rotate, ensuring the emergency closing of the fire damper. In summary, the present utility model improves the response efficiency and reliability by streamlining the structure and introducing innovative components, and also realizes the minimization of space occupation. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model in the first state;

[0024] Figure 2 It is another perspective schematic diagram of an embodiment of the present utility model in the first state (the steel wire rope is not drawn);

[0025] Figure 3 It is a schematic structural diagram of an embodiment of the present utility model in the second state;

[0026] Figure 4 It is a schematic structural diagram of an embodiment of the present utility model in the third state. Detailed Embodiment

[0027] The following further describes the present utility model in detail with reference to the embodiments of the drawings.

[0028] As Figures 1 to 4As shown, it is a preferred embodiment of an accessory for a remote-controlled fire damper actuator of the present utility model. This embodiment includes a bottom plate 1, and other components such as a rotating plate 2, a temperature sensor 4, and a swing frame 3 are directly or indirectly arranged on the bottom plate 1.

[0029] The rotating plate 2 is rotatably arranged on the bottom plate 1 and includes a bushing 21 in the middle. The bushing 21 is sleeved outside the blade main shaft of the fire damper and can drive the blade main shaft to rotate synchronously. In this embodiment, when the rotating plate 2 rotates counterclockwise, it drives the fire damper to open, and when the rotating plate 2 rotates clockwise, it drives the fire damper to close. The rotating plate 2 extends a rocker arm portion 22 away from the bushing 21. A rope hole 221 for a steel wire rope 5 to pass through is opened at the end of the rocker arm portion 22. A pressing plate 27 for pressing the steel wire rope 5 is also arranged in the area of the rocker arm portion 22 near the rope hole 221. In order to limit the rotatable range of the rotating plate 2, the rotating plate 2 also has a limiting notch 23, and a limiting post 11 is correspondingly arranged on the bottom plate 1. When the rotating plate 2 rotates clockwise until the limiting post 11 is stuck into the limiting notch 23, the rotating plate 2 will be limited and cannot continue to rotate clockwise. In order to facilitate obtaining the current opening and closing state of the fire damper, a micro switch 7 for transmitting signals is installed on the bottom plate 1. The rotating plate 2 has another extending convex portion 24, and a screw 26 perpendicular to the bottom plate 1 is arranged on the extending convex portion 24. When the fire damper is opened, the screw 26 contacts the elastic piece 71 of the micro switch 7, and the micro switch 7 is in the on state. When the fire damper is normally closed or closed due to an emergency, the extending convex portion 24 drives the screw 26 to turn away from the elastic piece 71 of the micro switch 7, and the micro switch 7 is in the off state. A first torsion spring 25 is sleeved outside the bushing 21. One end of the first torsion spring 25 is fixed to the bottom plate 1, and a torsion spring piece is arranged on the upper part of the bushing 21 of the rotating plate 2. The other end of the first torsion spring 25 is connected to the torsion spring piece and thus acts on the rotating plate 2, so that the rotating plate 2 always has a tendency to rotate in the direction of closing the fire damper.

[0030] The swing frame 3 is arranged at an interval from the rotating plate 2 so that they can rotate within their respective movement ranges without being blocked by another component. A swing shaft 33 is fixedly arranged on the bottom plate 1, and one end of the swing frame 3 is rotatably connected to the swing shaft 33. The temperature sensor 4 has a core shaft 41 protruding upward, and the other end of the swing frame 3 can be blocked by the core shaft 41 of the temperature sensor 4. A second torsion spring 34 is sleeved outside the swing shaft 33 of the swing frame 3. One end of the second torsion spring 34 is fixedly connected to the bottom plate 1, and the other end of the second torsion spring 34 acts on the swing frame 3 and makes the swing frame 3 always have a tendency to swing towards the pulling direction of the steel wire rope 5 over the core shaft 41. A rope wheel 31 is arranged at the end of the swing frame 3 away from the swing frame 33. A U-shaped rope wheel retaining piece 32 is arranged on the rope wheel 31. As Figure 2 shown, the U-shaped opening faces the wheel shaft of the rope wheel 31, and the two U-shaped side edges are respectively connected to the upper and lower ends of the wheel shaft, and the U-shaped bottom edge blocks the outer periphery of the rope wheel 31.

[0031] A guide sleeve 6 is provided on the bottom plate 1. One end of the steel wire rope 5 is fixed inside the guide sleeve 6, and then wound around the rope pulley 31 of the swing frame 3. The rope pulley retaining plate 32 can prevent the steel wire rope 5 from detaching from the rope pulley 31. After winding out from the rope pulley 31, the steel wire rope 5 then passes through the rope hole 221 of the rocker arm portion 22 of the rotating plate 2, and after passing through the rope hole 221, it passes between the rocker arm portion 22 and the pressing plate 27. The pressing plate 27 presses the steel wire rope 5 to provide a tensile force in the horizontal direction as much as possible. Finally, the other end of the steel wire rope 5 is connected to the fire damper actuator.

[0032] The remote control fire damper actuator accessory of this embodiment has three states.

[0033] The first state is as shown in Figure 1 and Figure 2 and corresponds to the normal closed state of the fire damper. When the remote control fire damper actuator accessory is in the first state, the rocker arm portion 22 of the rotating plate 2 points to the left, the limit post 11 of the bottom plate 1 is caught in the limit notch 23 of the rotating plate 2, and the first torsion spring 25 is in a natural state; the swing frame 3 points to the right, the second torsion spring 34 is in an energy storage state and makes the swing frame 3 have a tendency to rotate counterclockwise, but the swing frame 3 remains in a relatively static state due to being blocked by the core shaft 41 of the temperature sensor 4; the micro switch 7 is installed on the right side of the rotating plate 2, the extension convex portion 24 of the rotating plate 2 points to the front side at this time, and the micro switch 7 is in an off state.

[0034] The second state is as shown in Figure 3 and corresponds to the normal open state of the fire damper. When the remote control fire damper actuator accessory is in the second state, the rotating plate 2 rotates clockwise by 90 degrees, its rocker arm portion 22 points to the front side, the limit notch 23 of the rotating plate 2 is disengaged from the limit post 11 of the bottom plate 1, and the first torsion spring 25 is in an energy storage state so that the rotating plate 2 has a tendency to rotate clockwise; the second torsion spring 34 is in an energy storage state and makes the swing frame 3 have a tendency to rotate counterclockwise, but the swing frame 3 remains in a relatively static state due to being blocked by the core shaft 41 of the temperature sensor 4; the steel wire rope 5 locks the end of the rocker arm portion 22 of the rotating plate 2 far from the bushing 21 and the end of the swing frame 3 far from the swing shaft 33 to each other, so that the rotating plate 2 remains in a relatively static state under the action of the first torsion spring 25 and the tensile force of the steel wire rope 5; the extension convex portion 24 of the rotating plate 2 points to the right at this time, and the micro switch 7 is in an on state to transmit the signal that the fire damper is in the normal open state.

[0035] The third state is as shown in Figure 3As shown, it corresponds to the emergency closing state of the fire damper. When the ambient temperature is higher than the set temperature of the temperature sensor 4, the remote control fire damper actuator accessory will change from the second state to the third state, that is, the remote control fire damper actuator accessory will control the fire damper to close emergently. When the remote control fire damper actuator accessory is in the third state, the mandrel 41 of the temperature sensor 4 retracts into the temperature sensor 4, the block on the swing frame 3 disappears, and the second torsion spring 34 releases energy to make the swing frame 3 swing counterclockwise by 180°, and the swing frame 3 points to the left; due to the swing of the swing frame 3, the steel wire rope 5 no longer tightens the rocker arm portion 22 of the rotating plate 2, and the rotating plate 2 rotates clockwise by 90° under the elastic force of the first torsion spring 25, and the rocker arm portion 22 of the rotating plate 2 points to the left again, and the limit post 11 on the bottom plate 1 is reinserted into the limit notch 23 of the rotating plate 2 to prevent the rotating plate 2 from rotating too much under the action of torsion. At the same time, the bushing 21 drives the blade main shaft of the fire damper to rotate clockwise by 90° to close the fire damper emergently; the extension convex portion 24 of the rotating plate 2 points to the front side at this time, and the micro switch 7 is in the off state.

Claims

1. A remote control fire damper actuator accessory, characterized in that: include Bottom plate (1); The rotating plate (2) is rotatably arranged on the bottom plate (1), and comprises a shaft sleeve (21) in the middle, wherein the shaft sleeve (21) is used to be sleeved outside the blade main shaft of the fire damper and can drive the blade main shaft to rotate synchronously; A first torsion spring (25) is sleeved outside the shaft sleeve (21), one end of the first torsion spring (25) is fixed to the bottom plate (1), and the other end acts on the rotating plate (2) to make the rotating plate (2) always have a tendency to rotate in a direction to close the fire damper; A temperature sensor (4) is arranged on the bottom plate (1) and has a core shaft (41) protruding upwards. When the temperature exceeds a set value of the temperature sensor (4), the core shaft (41) contracts downwards. A swing shaft (33) is fixedly mounted on the bottom plate (1); A swing frame (3), one end of which is mounted on the swing shaft (33) in a manner of rotating around the swing shaft (33), and the other end of which can be blocked by a protruding core shaft (41) of the temperature sensor (4); The steel wire rope (5) connects the rotating plate (2) and the swing frame (3) and limits the relative position of the two.

2. The remote control fire damper actuator accessory according to claim 1, characterized in that: A second torsion spring (34) is sleeved on the swing shaft (33) of the swing frame (3), one end of the second torsion spring (34) is fixedly connected to the base plate (1), and the other end acts on the swing frame (3), so that the swing frame (3) always has a tendency to swing over the protruding core shaft (41) of the temperature sensor (4) in the direction of the tension provided by the steel wire rope (5).

3. The remote control fire damper actuator accessory according to claim 2, characterized in that: The bottom plate (1) is provided with a limiting column (11), the rotating plate (2) is provided with a corresponding limiting notch (23), and the limiting column (11) can enter the limiting notch (23) to limit the rotating plate (2).

4. The remote control fire damper actuator accessory according to claim 3, characterized in that: One end of the first torsion spring (25) is buckled with the limiting column (11) so as to be fixed to the base plate (1).

5. The remote control fire damper actuator accessory according to claim 4, characterized in that: A rope wheel (31) is arranged at one end of the swing frame (3) away from the swing shaft (33), and the steel wire rope (5) is wound around the rope wheel (31).

6. The remote control fire damper actuator accessory according to claim 5, characterized in that: The rope pulley (31) also includes a rope pulley baffle (32), which is in a U-shape with a side opening, wherein two U-shaped sides are respectively connected to the upper and lower ends of the rope pulley (31) axle, and the U-shaped bottom is shielded outside the periphery of the rope pulley (31).

7. The remote control fire damper actuator accessory according to claim 6, characterized in that: The rotating plate (2) comprises a rocker arm portion (22) extending away from the shaft sleeve (21), a pressure plate (27) being provided on the rocker arm portion (22), and the steel wire rope (5) being connected to the end of the rocker arm portion (22) and being pressed between the pressure plate (27) and the rocker arm portion (22).

8. The remote control fire damper actuator accessory according to claim 7, characterized in that: The remote-controlled fire damper actuator accessory has a first state, which corresponds to the normal closed state of the fire damper. When in the first state, the first torsion spring (25) is in a natural state, the swing frame (3) is in abutment with the core shaft (41) of the temperature sensor (4), and the second torsion spring (34) is in an energy storage state and makes the swing frame (3) have a tendency to rotate in the same direction as the blade main shaft to open the fire damper.

9. The remote control fire damper actuator accessory according to claim 8, characterized in that: The remote-controlled fire damper actuator accessory also has a second state, which corresponds to the normal open state of the fire damper. When in the second state, the first torsion spring (25) is in an energy storage state and causes the rotating plate (2) to have a tendency to rotate in the same direction as the blade main shaft to close the fire damper, the swing frame (3) abuts against the core shaft (41) of the temperature sensor (4), and the second torsion spring (34) is in an energy storage state and causes the swing frame (3) to have a tendency to rotate in the same direction as the blade main shaft to open the fire damper.

10. The remote control fire damper actuator accessory according to claim 9, characterized in that: The remote-controlled fire damper actuator accessory also has a third state, which corresponds to the emergency closing state of the fire damper. When in the third state, the first torsion spring (25) is in a natural state, and the second torsion spring (34) is in a natural state.

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