Support mounting structure of fireproof valve actuator and fireproof valve actuator applying support mounting structure

Abstract

The support installation structure is characterized by comprising a support, a bottom plate and an installation plate, the first end of the bottom plate extends upwards to form a connecting plate to be connected with the installation plate, the second end of the bottom plate extends downwards to form a positioning plate, and the positioning plate is connected with the installation plate. A first mounting hole is formed in the bottom plate; the base is used for installing the support, a positioning slot is formed in the base, and the positioning slot is matched with the positioning plate of the support, so that the positioning plate can be arranged in the positioning slot in a penetrating mode to position the support; the base is further provided with a second installation hole, the second installation hole is matched with the first installation hole, and the support can be fixedly installed on the base through the first installation hole and the second installation hole. The position of the support installation structure of the fireproof valve actuator is not prone to deviation.

Description

Technical Field

[0001] The utility model relates to a fire damper actuator, in particular to a bracket installation structure of the fire damper actuator and a fire damper actuator using the bracket installation structure. Background Art

[0002] The fire damper actuator is a device used to control the opening and closing of the fire damper in the smoke exhaust system. Its main function is to quickly open the fire damper to exhaust smoke when a fire occurs. When a fire occurs, the electromagnet is energized to attract the moving iron core, pulling the swing arm hinged to the moving iron core, so that the end of the swing arm is disengaged from the swing frame. Under the action of the torsion spring, the cam is forced to slide out of the roller on the swing frame, and the cam rotates, driving the handle to rotate, opening the valve for smoke exhaust. At this time, the micro-pump rod rotates with the swing arm and contacts the micro-plate on the swing frame. The micro-switch opens, thereby outputting a feedback signal. For more specific content, please refer to the Chinese utility model patent "Fully Automatic Actuator" with application number 202022591967.5 (authorization announcement number CN 213774966 U).

[0003] The feedback signal of the micro switch is crucial for the fire damper actuator. It can trigger a chain reaction to shut down the smoke exhaust fan to prevent the spread of fire, and enable the fire control room to monitor the valve status in real time, which is convenient for management and emergency response, while improving system safety and ensuring timely handling of abnormal situations. In order to ensure that the micro switch can accurately perform its function, its installation position must be carefully calibrated. If the installation position deviates, it may cause deviations in the feedback signal, thereby interfering with the effective control of the fire scene. The existing micro switch is installed on a "Z"-shaped bracket, and the bottom of the bracket is positioned and threaded on the base by two screws. There is inevitably a matching gap between the mounting holes of the bracket and the mounting holes of the base, which makes the bracket and its supported micro switch and other components easy to loosen and deviate. In addition, since two screws need to be driven in each installation, the installation efficiency cannot be improved. Therefore, further improvements are needed for the existing bracket installation structure. Utility Model Content

[0004] The technical problem to be solved by the utility model is to propose a bracket installation structure of a fire damper actuator whose position is not easily displaced and a fire damper actuator using the bracket installation structure in view of the above technical status quo.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: a bracket installation structure of a fire damper actuator, characterized in that it includes

[0006] The bracket comprises a bottom plate and a mounting plate, wherein a connecting plate extends upward from a first end of the bottom plate to be connected to the mounting plate, a positioning plate extends downward from a second end of the bottom plate, and a first mounting hole is formed on the bottom plate;

[0007] The base is used to install the bracket, and the base is provided with a positioning slot, which is adapted to the positioning plate of the bracket so that the positioning plate can be inserted into the positioning slot to position the bracket; the base is also provided with a second mounting hole, which matches the first mounting hole, and the bracket can be installed and fixed on the base through the first mounting hole and the second mounting hole.

[0008] The positioning plate extending downward from the second end of the bottom plate can be arranged at various positions. Preferably, the first end of the bottom plate is opposite to the second end of the bottom plate.

[0009] Alternatively, preferably, the first end of the bottom plate is adjacent to the second end of the bottom plate.

[0010] Specifically, the bracket mounting structure further includes a fixing piece, the second mounting hole is a threaded hole, and the fixing piece passes through the first mounting hole and is threadedly connected to the second mounting hole.

[0011] Since the positioning plate plays a positioning role, preferably, the bottom plate is provided with a first mounting hole instead of two mounting holes as in the prior art, thereby simplifying the installation process of the bracket.

[0012] Furthermore, the mounting plate is provided with a third mounting hole, and the third mounting hole is used to mount the micro switch or other components on the bracket.

[0013] In order to make the installation position of the micro switch or other components more accurate, further, there are two third mounting holes, and the third mounting holes are distributed at intervals along the extension direction of the bracket.

[0014] The utility model also discloses a fire damper actuator, which is characterized by having the above-mentioned bracket installation structure.

[0015] Specifically, the fire damper actuator further includes a micro switch, and the micro switch is mounted on a mounting plate of the bracket.

[0016] In order to save the internal space of the actuator, preferably, the fire damper actuator further comprises a rocker arm, which is rotatably fixed on the base via a rocker arm shaft, and the rocker arm passes under the mounting plate of the bracket.

[0017] Compared with the prior art, the utility model adds a positioning plate extending downward at the end of the bottom plate of the bracket, and this design enhances the positioning function of the bracket. When used in conjunction with a base with a positioning slot, the positioning slot is just enough for the positioning plate to pass through. The positioning plate is inserted into the positioning slot to accurately complete the positioning of the bracket. Subsequently, the fixing member passes through the first mounting hole of the bracket and the second mounting hole of the bottom plate, which can effectively prevent the bracket and the micro switch or other components installed thereon from loosening and deflecting. The utility model also discloses a fire damper actuator using the bracket, and the micro switch of the fire damper actuator is more accurately installed and can stably perform its function. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of Example 1 of the fire damper actuator of the utility model;

[0019] Figure 2 for Figure 1 Internal schematic diagram of the structure;

[0020] Figure 3 It is an exploded schematic diagram of the bracket, base and fixing member of Example 1 of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the bracket of Example 2 of the utility model;

[0022] Figure 5 This is a schematic structural diagram of a base of Embodiment 3 of the present utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the bracket of Example 2 of the utility model. DETAILED DESCRIPTION

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0025] Example 1

[0026] like Figures 1 to 5 As shown, it is a preferred embodiment of the fire damper actuator and its bracket 3 of the present utility model.

[0027] The fire damper actuator comprises a base 1 , on which a cover shell 2 is provided, and a bracket 3 is installed on the base 1 and is located in a space enclosed by the base 1 and the cover shell 2 .

[0028] The bracket 3 includes a bottom plate 33 and a mounting plate 31. A first end of the bottom plate 33 extends upward to form a connecting plate 32 connected to the mounting plate 31, and a second end of the bottom plate 33 extends downward to form a positioning plate 34. Figure 4As shown, the first end of the bottom plate 33 is opposite to the second end of the bottom plate 33. The bottom plate 33 is provided with a first mounting hole 331. The base 1 is provided with a positioning slot 11 and a second mounting hole 12 that can cooperate with the bracket 3. The length and width of the positioning slot 11 are only slightly larger than the positioning plate 34 of the bracket 3. The positioning plate 34 of the bracket 3 can be inserted into the positioning slot 11 of the base 1 for positioning. A fixing member 4, such as a screw or a bolt, is then passed through the first mounting hole 331 of the bracket 3 and the second mounting hole 12 of the base 1 to fix the bracket 3 to the base 1.

[0029] Two third mounting holes 311 are formed on the mounting plate 31 of the bracket 3 . The two third mounting holes 311 are arranged along the extending direction of the bracket 3 . The micro switch 5 is mounted on the mounting plate 31 of the bracket 3 through the two third mounting holes 311 .

[0030] A swing rod 6 is also provided in the fire damper actuator. The swing rod 6 is rotatably fixed on the base 1 through a swing rod shaft. The swing rod 6 passes under the mounting plate 31 of the bracket 3 .

[0031] The fire damper actuator also includes a swing frame 7, an electromagnet 8, etc., all of which are mounted on the base 1. The handle 21 on the cover 2 is connected to the base 1 through a rotating shaft 211, and a torsion spring 212 is sleeved on the rotating shaft 211, one end of which is fixed on the base 1. The rotating shaft 211 is also equipped with a cam 213, which has a bayonet 214, which matches the bayonet 71 on the swing frame 7.

[0032] The tension spring 9 connects the swing frame 7 and the electromagnet 8, with one end fixed to the swing frame 7 and the other end fixed to the housing of the electromagnet 8. The electromagnet 8 has a moving iron core 81, which is connected to one end of the swing rod 6, and the other end of the swing rod 6 cooperates with one end of the swing frame 7. After the electromagnet 8 is energized, the swing rod 6 is attracted to move toward the swing frame 7, the handle 21 is manually rotated, and the cam 213 pushes the clamping shaft 71 to open the swing frame 7, and the swing frame 7 pulls the tension spring 9 until the clamping mouth 214 on the cam 213 is locked with the clamping shaft 71 to prevent the swing rod 6 from moving toward the rotating shaft 211. The rotating shaft 211 remains stationary, the torsion spring 212 stores energy, and the smoke exhaust fire damper remains normally closed.

[0033] In case of fire, the electromagnet 8 is powered off, and the swing rod 6 is separated from the swing frame 7. Under the action of the tension spring 9, the swing frame 7 moves toward the rotating shaft 211, and the clamping shaft 71 pushes the clamping hole 214 to make it disengage. The torsion spring 212 releases energy, driving the rotating shaft 211 to rotate, and the smoke exhaust fire damper opens to realize the smoke exhaust function.

[0034] When the swing frame 7 moves toward the rotating shaft 211, the micro contact piece contacts the micro switch 5, and the latter is activated to send a feedback signal.

[0035] Example 2

[0036] The difference between this embodiment and embodiment 1 is that the first end of the bottom plate 33 is adjacent to the second end of the bottom plate 33. Figure 6 As shown, a positioning plate 34 extends downward from the second end of the bottom plate 33 , and a plane where the positioning plate 34 is located is not parallel to a plane where the connecting plate 32 extends upward from the first end of the bottom plate 33 is located.

Claims

1. A bracket installation structure for a fire damper actuator, characterized in that: include The bracket (3) comprises a bottom plate (33) and a mounting plate (31), wherein a first end of the bottom plate (33) extends upward to form a connecting plate (32) connected to the mounting plate (31), and a second end of the bottom plate (33) extends downward to form a positioning plate (34), and the bottom plate (33) is provided with a first mounting hole (331); The base (1) is used to install the bracket (3), and the base (1) is provided with a positioning slot (11), and the positioning slot (11) is adapted to the positioning plate (34) of the bracket (3), so that the positioning plate (34) can be inserted into the positioning slot (11) to position the bracket (3); the base also has a second mounting hole, and the second mounting hole matches the first mounting hole (331), and the bracket (3) can be mounted and fixed on the base (1) through the first mounting hole (331) and the second mounting hole.

2. The bracket installation structure of the fire damper actuator according to claim 1, characterized in that: The first end of the bottom plate (33) is opposite to the second end of the bottom plate (33).

3. The bracket installation structure of the fire damper actuator according to claim 1, characterized in that: The first end of the bottom plate (33) is adjacent to the second end of the bottom plate (33).

4. The bracket installation structure of the fire damper actuator according to claim 1 or 2, characterized in that: It also includes a fixing member (4), the second mounting hole is a threaded hole, and the fixing member (4) passes through the first mounting hole (331) and is threadedly connected to the second mounting hole.

5. The bracket installation structure of the fire damper actuator according to claim 1 or 2, characterized in that: The bottom plate (33) is provided with a first mounting hole (331).

6. The bracket installation structure of the fire damper actuator according to claim 1 or 2, characterized in that: The mounting plate (31) is provided with a third mounting hole (311).

7. The bracket installation structure of the fire damper actuator according to claim 6, characterized in that: There are two third mounting holes (311), and the third mounting holes (311) are distributed at intervals along the extension direction of the bracket (3).

8. A fire damper actuator, characterized in that: A bracket mounting structure having any one of claims 1 to 7.

9. The fire damper actuator according to claim 8, characterized in that: It also includes a micro switch (5), which is mounted on the mounting plate (31) of the bracket (3).

10. The fire damper actuator according to claim 9, characterized in that: It also comprises a swing rod (6), which is rotatably fixed on the base (1) via a swing rod shaft, and the swing rod (6) passes under the mounting plate (31) of the bracket (3).

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