A fire resistance testing device for fire doors

Abstract

This utility model relates to the field of fire door testing technology and discloses a fire resistance performance testing device for fire doors, including a testing box, a fixing component, and a guide frame. The guide frame is fixed to the bottom front of the testing box, and the fixing component is disposed on the guide frame. The fixing component includes a fixing frame, a fixing groove formed on the fixing frame, and a movable block fixed at the center of the bottom of the fixing frame. The top of the guide frame has a movable groove. This application can simultaneously install multiple fire doors on the fixing frame and slide them sequentially to the front of the testing box for fire resistance testing. It can realize the sequential testing of multiple fire doors. When a fire door in one fixing groove is being tested, fire doors in other fixing grooves can be disassembled and installed without affecting each other. This method can effectively save disassembly and assembly time, thereby improving the fire resistance testing efficiency when testing multiple fire doors.

Description

Technical Field

[0001] This utility model relates to the field of fire door testing technology, specifically a fire door fire resistance performance testing device. Background Technology

[0002] Fire doors are building facilities that effectively prevent the spread of fire and smoke during a fire. They are typically installed in critical locations such as fire compartments and evacuation stairwells. Their core functions are to meet requirements for fire resistance stability, integrity, and thermal insulation. After production, fire doors usually undergo fire resistance testing to ensure their quality and compliance with factory requirements.

[0003] A search revealed a Chinese patent, publication number CN222912422U, which describes: "A fire door testing furnace that not only facilitates the loading and unloading of fire doors and prevents them from being difficult to remove after deformation, but also performs a dot-matrix test on the fire resistance of fire doors, which can detect the weak points of the fire doors; including a testing furnace; and also including a testing mechanism, a moving mechanism, a combustion mechanism, and a smoke exhaust mechanism. The testing mechanism is installed on the testing furnace and performs a dot-matrix test on the fire resistance of the fire doors. The moving mechanism is installed on the testing furnace and facilitates the loading and unloading of fire doors. The combustion mechanism is installed on the testing furnace and burns the fire doors. The smoke exhaust mechanism is installed on the combustion mechanism and extracts the smoke after the test is completed."

[0004] Through a review of the aforementioned technologies, we found certain shortcomings in the practical application of this solution: Firstly, when testing multiple fire doors, the currently tested fire doors must be removed before a new fire door to be tested can be installed, resulting in significant time wastage and low testing efficiency. Secondly, the fixed distance between the ignition nozzle and the fire door, meaning the distance at which the nozzle sprays flame towards the fire door, makes it difficult to detect the fire resistance performance of the fire door at varying distances from a fire. Therefore, to address these shortcomings in the existing technology, we have specifically designed a fire door fire resistance performance testing device. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fire resistance performance testing device for fire doors, comprising a testing chamber, a fixing component, and a guide frame; the guide frame is fixed to the bottom front of the testing chamber, the fixing component is disposed on the guide frame, and the fixing component includes a fixing frame, a fixing groove formed on the fixing frame, and a movable block fixed at the center of the bottom of the fixing frame; the top of the guide frame has a movable groove, and a servo motor for driving the fixing frame to slide on the guide frame is installed on one side of the guide frame; a distance adjustment frame is provided inside the testing chamber, and an electric push rod is provided on the back of the testing chamber, the power output shaft of the electric push rod movably passing through the interior of the testing chamber and connected to the distance adjustment frame.

[0007] As a further embodiment of this utility model: the top of the fixing frame is integrally formed with a slider, a sliding groove is provided on one side of the top wall of the detection box, the slider is slidably connected in the sliding groove, and the movable block is slidably connected in the movable slot.

[0008] As a further embodiment of this utility model: a lead screw is drivenly connected to the power output shaft of the servo motor 2. The end of the lead screw 2, which is placed in the movable groove 1 and is away from the servo motor 2, is rotatably connected to the other side of the guide frame. The thread of the lead screw 2 passes through the movable block 1, which is placed in the movable groove 1.

[0009] As a further embodiment of this utility model: the fixing frame has three fixing slots, and a limit ring is fixed on the inner wall of each fixing slot. The surface of the fixing frame and the four sides of each fixing slot are rotatably connected to a limit plate.

[0010] As a further embodiment of this utility model: the top of the guide frame and the bottom of the fixing frame are both flat surfaces, and the bottom of the fixing frame is slidably connected to the top of the guide frame.

[0011] As a further embodiment of this utility model: a fixing plate is slidably connected to the distance adjustment frame, and ignition nozzles are equidistantly installed on the front of the fixing plate. Each ignition nozzle has a fuel delivery end connected to a gas pipe 1. The other ends of multiple gas pipes 1 are connected to a gas pipe 2. One end of the gas pipe 2 is sealed, and the other end passes through the detection box and is connected to a valve. The gas pipe 1 is a stainless steel corrugated flexible hose, and the gas pipe 2 is a stainless steel rigid pipe.

[0012] As a further embodiment of this utility model: the top of the detection box is provided with a movable groove 2, and the inner bottom wall of the detection box is provided with a positioning groove at a position corresponding to the movable groove 2. A movable block 2 is slidably connected in the movable groove 2, and a positioning block is slidably connected in the positioning groove. The bottom of the movable block 2 is fixed to the top of the distance adjustment frame, and the top of the positioning block is fixed to the bottom of the distance adjustment frame.

[0013] As a further embodiment of this utility model: a servo motor is installed on the top of the movable block 2, the power output shaft of the servo motor 1 movably passes through the movable block 2 and is connected to a lead screw 1, and the bottom of the lead screw 1 is rotatably connected to the inner bottom wall of the distance adjustment frame.

[0014] As a further embodiment of this utility model: a groove is provided on the distance adjustment frame, and a height adjustment block is slidably connected in the groove. One side of the height adjustment block is fixedly connected to the back of the fixing plate, and the lead screw is placed in the groove on the distance adjustment frame and threadedly sleeved with the height adjustment block.

[0015] As a further embodiment of this utility model: the electric push rod is installed at the center of the back of the detection box, and the power output shaft of the electric push rod is fixed at the center of the back of the distance adjustment frame.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] I. In this application, through the designed testing box, fixing frame, guide frame, and servo motor, and with multiple fixing slots on the fixing frame, multiple fire doors can be installed on the fixing frame simultaneously and slid sequentially to the front of the testing box for fire resistance testing. This allows for the sequential testing of multiple fire doors. While one fire door in a fixing slot is being tested, other fire doors can be disassembled and installed in other fixing slots without affecting each other. When testing other fire doors, the fixing frame can be slid. This method effectively saves disassembly and assembly time, thereby improving the efficiency of fire resistance testing when testing multiple fire doors.

[0018] Second, in this application, through the designed electric push rod and distance adjustment frame, the electric push rod can drive the distance adjustment frame to move, thereby using the distance adjustment frame to drive the ignition nozzle on it to move, realizing the change of distance between the ignition nozzle and the fire door body, thus simulating and detecting the fire resistance performance of the fire door at close and far distances from a fire, and the detection effect is better.

[0019] Third, in this application, through the design of a servo motor and a fixed plate, the height of the fixed plate on the distance adjustment frame can be adjusted, that is, the height of the ignition nozzle on the fixed plate can be adjusted, so that the ignition nozzle can be used to spray fire at different heights on the fire door to achieve fire resistance testing at different positions on the fire door. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0021] Figure 2 This is a three-dimensional structural diagram of the detection box of this utility model;

[0022] Figure 3 This is a three-dimensional structural diagram of the fixing component of this utility model;

[0023] Figure 4 This is a side cross-sectional view of the detection box of this utility model.

[0024] The reference numerals and names in the figure are as follows:

[0025] 1. Inspection box; 101. Slide groove; 102. Positioning groove; 2. Fixing assembly; 201. Fixing frame; 202. Fixing groove; 203. Limiting ring; 204. Slider; 205. Movable block one; 3. Guide frame; 301. Movable groove one; 4. Movable groove two; 5. Movable block two; 6. Servo motor one; 601. Lead screw one; 7. Distance adjustment frame; 701. Positioning block; 8. Fixing plate; 9. Ignition nozzle; 10. Gas pipe one; 11. Gas pipe two; 12. Valve; 13. Servo motor two; 1301. Lead screw two; 14. Limiting plate; 15. Electric push rod. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-4 A fire resistance performance testing device for fire doors includes a testing chamber 1, a fixing component 2, and a guide frame 3. The guide frame 3 is fixed to the bottom front of the testing chamber 1. The fixing component 2 is mounted on the guide frame 3 and includes a fixing bracket 201, a fixing groove 202 formed on the fixing bracket 201, and a movable block 205 fixed at the center of the bottom of the fixing bracket 201. The top of the guide frame 3 has a movable groove 301, and a servo motor 13 for driving the fixing bracket 201 to slide on the guide frame 3 is installed on one side of the guide frame 3. A distance adjustment frame 7 is provided inside the testing chamber 1, and an electric push rod 15 is provided on the back of the testing chamber 1. The power output shaft of the electric push rod 15 extends through the interior of the testing chamber 1 and is connected to the distance adjustment frame 7.

[0028] Please refer to the following: Figure 1 , Figure 2 and Figure 3In this embodiment, the top of the fixed frame 201 is integrally formed with a slider 204, and a groove 101 is provided on one side of the inner top wall of the detection box 1. The slider 204 is slidably connected in the groove 101, and the movable block 205 is slidably connected in the movable groove 301.

[0029] Specifically, when the fixed frame 201 is in motion, the top slider 204 slides in the slide groove 101, and the bottom movable block 205 slides in the movable groove 301, thereby ensuring the stability of the fixed frame 201 during movement and maintaining linear sliding, which can stably transfer the fire door to the front of the detection box 1.

[0030] Please refer to the following: Figure 1 , Figure 2 and Figure 3 In this embodiment, a lead screw 1301 is driven and connected to the power output shaft of the servo motor 13. The end of the lead screw 1301, which is placed in the movable groove 301 and is away from the servo motor 13, is rotatably connected to the other side of the guide frame 3. The threaded rod of the lead screw 1301 passes through the movable block 205 placed in the movable groove 301. The top of the guide frame 3 and the bottom of the fixing frame 201 are both flat surfaces. The bottom of the fixing frame 201 is slidably connected to the top of the guide frame 3.

[0031] Specifically, after the servo motor 213 is started, it can drive the lead screw 21301 to rotate, and drive the movable block 205 threaded with it to slide in the movable groove 301, thereby driving the fixed frame 201 to move. The top of the guide frame 3 and the bottom of the fixed frame 201 are both flat surfaces, which makes it easy for the bottom of the fixed frame 201 to move over the servo motor 213, and makes it easy for the fixed grooves 202 at different positions on the fixed frame 201 to carry the fire door to the front of the test box 1 for fire resistance testing.

[0032] Please refer to the following: Figure 1 and Figure 3 In this embodiment, the fixing frame 201 has three fixing slots 202, and each fixing slot 202 has a limit ring 203 fixed on its inner wall. The surface of the fixing frame 201 and the four sides of each fixing slot 202 are rotatably connected to a limit plate 14.

[0033] Specifically, each fixing groove 202 has a limiting ring 203, which can limit one side of the fire door to ensure the positioning of the back of the fire door in the fixing groove 202. In conjunction with the limiting plate 14 on the side of the fixing groove 202, the rotation of the limiting plate 14 can limit the front of the fire door, thereby further ensuring the stability of the fire door on the fixing frame 201.

[0034] Please refer to the following: Figure 2 and Figure 4In this embodiment, a fixing plate 8 is slidably connected to the distance adjustment frame 7. Ignition nozzles 9 are installed at equal intervals on the front of the fixing plate 8. Each ignition nozzle 9 is connected to a gas pipe 10 at its fuel delivery end. The other ends of multiple gas pipes 10 are connected to a gas pipe 2 11. One end of the gas pipe 2 11 is sealed, and the other end passes through the detection box 1 and is connected to a valve 12. The gas pipe 10 is a stainless steel corrugated flexible hose, and the gas pipe 2 11 is a stainless steel rigid pipe.

[0035] Specifically, there are multiple ignition nozzles 9 installed equidistantly on the fixing plate 8, which can increase the fire-receiving area of ​​the fire door and improve the accuracy of detection. The gas pipe 10 is a stainless steel corrugated flexible hose, which can ensure the fire resistance of the gas pipe 10 and allow for deformation to facilitate the normal movement of the fixing plate 8. The gas pipe 21 is a stainless steel rigid pipe to ensure fire resistance. The gas pipe 21 is also connected to a valve 12, which can adjust the gas supply of the gas pipe 211 to adjust the flame intensity.

[0036] Please refer to the following: Figure 1 , Figure 2 and Figure 4 In this embodiment, the top of the detection box 1 is provided with a second movable groove 4, and the inner bottom wall of the detection box 1 is provided with a positioning groove 102 at a position corresponding to the second movable groove 4. A second movable block 5 is slidably connected in the second movable groove 4, and a positioning block 701 is slidably connected in the positioning groove 102. The bottom of the second movable block 5 is fixed to the top of the distance adjustment frame 7, and the top of the positioning block 701 is fixed to the bottom of the distance adjustment frame 7. The electric push rod 15 is installed in the center of the back of the detection box 1, and the power output shaft of the electric push rod 15 is fixed in the center of the back of the distance adjustment frame 7.

[0037] Specifically, when the distance adjustment frame 7 is moved by the electric push rod 15, the top of the distance adjustment frame 7 is stabilized by the limit of the movable block 2 5 in the movable groove 2 4, and the positioning block 701 is stabilized by the limit of the positioning groove 102. This ensures the stability of the distance adjustment frame 7 during movement. Furthermore, the power output shaft of the electric push rod 15 is fixed in the center of the back of the distance adjustment frame 7, which ensures that the force on the distance adjustment frame 7 is uniform and is more conducive to movement.

[0038] Please refer to the following: Figure 1 , Figure 2 and Figure 4In this embodiment, a servo motor 6 is installed on the top of the movable block 2 5. The power output shaft of the servo motor 6 passes through the movable block 2 5 and is connected to a lead screw 601. The bottom of the lead screw 601 is rotatably connected to the inner bottom wall of the distance adjustment frame 7. A groove is provided on the distance adjustment frame 7, and a height adjustment block is slidably connected in the groove. One side of the height adjustment block is fixedly connected to the back of the fixing plate 8. The lead screw 601 is placed in the groove provided on the distance adjustment frame 7 and threadedly sleeved with the height adjustment block.

[0039] Specifically, after the servo motor 6 starts, it can drive the lead screw 601 to rotate. The rotation of the lead screw 601 causes the height adjustment block, which is threaded onto it, to slide in the groove. When the height adjustment block slides, it can drive the fixing plate 8 to adjust the height on the side of the adjustment frame 7. This allows the ignition nozzle 9 on the fixing plate 8 to perform fire resistance testing on the fire door at different heights.

[0040] When using:

[0041] Staff can place multiple fire doors that need to be tested for fire resistance into the fixing groove 202 in sequence, and rotate the limiting plate 14 to limit the front of the fire door to ensure the stability of the fire door in the fixing groove 202.

[0042] After the servo motor 213 is started, the power output shaft of the servo motor 213 drives the lead screw 21301 to rotate. The rotation of the lead screw 21301 drives the movable block 205 to slide in the movable slot 301, thereby moving the fixed frame 201. The fire doors in different positions can be transferred to the front of the test box 1 in sequence. When the fire door in one of the fixed slots 202 is undergoing fire resistance testing, the fire doors in the other fixed slots 202 can be disassembled and installed.

[0043] When it is necessary to change the position of the distance adjustment frame 7, the electric push rod 15 can be activated. When the power output shaft of the electric push rod 15 extends, it can push the distance adjustment frame 7 closer to the fire door, that is, to make the ignition nozzle 9 on the distance adjustment frame 7 closer to the fire door. Conversely, when the power output shaft of the electric push rod 15 retracts, it can make the ignition nozzle 9 on the distance adjustment frame 7 move away from the fire door, so as to realize the fire resistance test of the fire door when the fire source is at different distances from the fire door.

[0044] When it is necessary to adjust the height of the ignition nozzle 9, the servo motor 6 is started. The power output shaft of the servo motor 6 can drive the lead screw 601 to rotate in both directions, thereby driving the fixed plate 8 and the ignition nozzle 9 on the fixed plate 8 to adjust the height, so as to realize the fire resistance test of the fire door at different heights.

[0045] It should be noted that the gas inlet of gas pipe 2 11 is connected to the pump body and gas tank through a pipeline (the pump body and gas tank are not shown in the figure. Using the gas tank and pump body to deliver fuel for ignition is a conventional technical means, so it will not be described in detail in this manual). The gas tank can deliver gas to gas pipe 2 11 and multiple gas pipes 10, thereby facilitating the intake of multiple ignition nozzles 9. After ignition, the fire door is tested for fire resistance. After a fire door is tested, the fixed bracket 201 can be moved away from the front of the test box 1, so that the staff can intuitively judge the fire-exposed surface of the tested fire door.

[0046] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A device for testing the fire resistance of a fire door, characterized in that, It includes a detection box (1), a fixing component (2), and a guide frame (3); The guide frame (3) is fixed to the bottom front of the detection box (1), and the fixing component (2) is set on the guide frame (3). The fixing component (2) includes a fixing frame (201), a fixing groove (202) opened on the fixing frame (201), and a movable block (205) fixed at the center of the bottom of the fixing frame (201). The top of the guide frame (3) is provided with an active groove (301), and a servo motor (13) for driving the fixing frame (201) to slide on the guide frame (3) is installed on one side of the guide frame (3). The detection box (1) is provided with a distance adjustment frame (7) inside. An electric push rod (15) is provided on the back of the detection box (1). The power output shaft of the electric push rod (15) extends through the inside of the detection box (1) and is connected to the distance adjustment frame (7).

2. The device for testing the fire resistance of a fire door according to claim 1, characterized in that, The top of the fixed frame (201) is integrally formed with a slider (204), and a groove (101) is provided on one side of the inner top wall of the detection box (1). The slider (204) is slidably connected in the groove (101), and the movable block (205) is slidably connected in the movable slot (301).

3. The fire resistance test device for fire doors according to claim 1, wherein The second lead screw (1301) is connected to the power output shaft of the second servo motor (13). The end of the second lead screw (1301) placed in the first movable groove (301) and away from the second servo motor (13) is rotatably connected to the other side of the guide frame (3). The threaded rod of the second lead screw (1301) passes through the first movable block (205) placed in the first movable groove (301).

4. The fire resistance test apparatus for fire doors according to claim 1, wherein The fixing frame (201) has three fixing slots (202), and a limit ring (203) is fixed on the inner wall of each fixing slot (202). A limit plate (14) is rotatably connected to the surface of the fixing frame (201) and at the four sides of each fixing slot (202).

5. The fire resistance test apparatus for fire doors according to claim 1, wherein The top of the guide frame (3) and the bottom of the fixing frame (201) are both flat surfaces, and the bottom of the fixing frame (201) is slidably connected to the top of the guide frame (3).

6. The fire resistance test apparatus for fire doors according to claim 1, wherein A fixing plate (8) is slidably connected to the distance adjustment frame (7). Ignition nozzles (9) are installed at equal intervals on the front of the fixing plate (8). Each ignition nozzle (9) is connected to a gas pipe (10) at its fuel delivery end. The other ends of multiple gas pipes (10) are connected to a gas pipe (11). One end of the gas pipe (11) is sealed, and the other end passes through the detection box (1) and is connected to a valve (12). The gas pipe (10) is a stainless steel corrugated hose, and the gas pipe (11) is a stainless steel hard pipe.

7. The fire resistance performance testing device for fire doors according to claim 1, characterized in that, The top of the detection box (1) is provided with a movable groove 2 (4), and the inner bottom wall of the detection box (1) is provided with a positioning groove (102) at a position corresponding to the movable groove 2 (4). A movable block 2 (5) is slidably connected in the movable groove 2 (4), and a positioning block (701) is slidably connected in the positioning groove (102). The bottom of the movable block 2 (5) is fixed to the top of the distance adjustment frame (7), and the top of the positioning block (701) is fixed to the bottom of the distance adjustment frame (7).

8. The fire resistance performance testing device for fire doors according to claim 7, characterized in that, The top of the movable block 2 (5) is equipped with a servo motor 1 (6), the power output shaft of the servo motor 1 (6) passes through the movable block 2 (5) and is connected to a lead screw 1 (601), and the bottom of the lead screw 1 (601) is rotatably connected to the inner bottom wall of the distance adjustment frame (7).

9. The fire resistance performance testing device for fire doors according to claim 8, characterized in that, The distance adjustment frame (7) has a groove, and a height adjustment block is slidably connected in the groove. One side of the height adjustment block is fixedly connected to the back of the fixing plate (8). The lead screw (601) is placed in the groove on the distance adjustment frame (7) and threadedly sleeved with the height adjustment block.

10. The fire resistance performance testing device for fire doors according to claim 1, characterized in that, The electric push rod (15) is installed in the center of the back of the detection box (1), and the power output shaft of the electric push rod (15) is fixed in the center of the back of the distance adjustment frame (7).

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