Fireproof door fire resistance test automatic temperature measurement platform based on thermal imaging camera

Abstract

The utility model discloses a thermal imaging camera-based fireproof door fire resistance test automatic temperature measurement platform, which comprises a mounting bracket, and a thermocouple, a thermal imaging camera, an electric control system box, a thermocouple fixing piece and a three-axis moving module which are arranged on the mounting bracket. The thermocouple is installed at the moving end of the three-axis moving module through a thermocouple fixing piece and can be driven by the three-axis moving module to move in a three-axis mode. According to the utility model, through the arrangement of the thermal imaging camera, the overall acquisition of the temperature of the back-to-fire surface of the fireproof door test piece is realized, and through the integration of the upper computer, the temperature picture of the thermal imaging camera can be visually seen. Meanwhile, the thermocouple is driven by the three-axis moving module to move to a specific position so as to acquire a more accurate temperature value; and the detection efficiency is improved while the labor cost is saved.

Description

Technical Field

[0001] This utility model belongs to the field of fire door testing technology, specifically relating to an automatic temperature measurement platform for fire door fire resistance testing based on a thermal imaging camera. Background Technology

[0002] In existing technology, fire doors are defined as doors that can meet the requirements of fire resistance stability, integrity, and thermal insulation within a certain period of time. During fire resistance testing, the fire door is typically fixed within a test frame with a vertical fire resistance test furnace opening. During the test, the flanges of the fire door are subjected to combustion under standard fire conditions. The fire resistance performance of the specimen is judged by observing the phenomena on the unexposed side and analyzing the temperature rise records. Temperature measurements in the above fire resistance tests typically use fixed thermocouples. The thermocouples are fixed to the unexposed side for contact measurement.

[0003] However, using fixed thermocouples has several drawbacks: First, the number of measurement points is limited. With fixed thermocouples, the number of measurement points on the unexposed side is typically between 9 and 25, resulting in a limited analytical space for the specimen. Second, the measurement distribution is restricted, making it impossible to analyze the influence of accessories (such as fireproof locks and hinges) and structural components (such as the frame) on the unexposed side temperature distribution. Furthermore, the limited number and distribution of measurement points make predicting specimen failure difficult. In addition, thermocouple fixing usually requires manual welding. Fixing multiple thermocouples at multiple measurement points increases manpower consumption and reduces the practical performance of the device. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model provides an automatic temperature measurement platform for fire door fire resistance testing based on a thermal imaging camera, in order to solve the technical problem that fixed thermocouples have limitations in the testing range of fire doors.

[0005] To achieve the above objectives, the specific technical solution of this utility model is as follows:

[0006] An automatic temperature measurement platform for fire door fire resistance testing based on a thermal imaging camera includes a mounting bracket, and thermocouples, a thermal imaging camera, an electrical control system box, thermocouple fixing components, and a three-axis motion module mounted on the mounting bracket. The thermocouples are mounted on the moving end of the three-axis motion module via the thermocouple fixing components, enabling three-axis movement driven by the three-axis motion module. The thermal imaging camera is fixed at the center of the mounting bracket and is used to acquire images of the unexposed side of the fire door under test. The electrical control system box is used to receive the temperature images acquired by the thermal imaging camera.

[0007] Furthermore, the three-axis movement module includes a horizontal movement component, a vertical movement component, and a longitudinal drive component. The horizontal movement component is mounted on the moving end of the vertical movement component and can move vertically under the drive of the vertical movement component. The longitudinal drive component is mounted on the moving end of the horizontal movement component and can move horizontally under the drive of the horizontal movement component. The thermocouple is mounted on the moving end of the longitudinal drive component via a thermocouple fixing component and can switch between approaching and moving away from the fire door being tested under the drive of the longitudinal drive component.

[0008] Furthermore, the vertical movement component includes a vertical slide rail, a vertical slide table, and a vertical drive component. The vertical slide rail is arranged along the height direction of the mounting bracket and is fixed to the mounting bracket. The vertical slide table is slidably connected to the vertical slide rail and can slide freely in the vertical direction under the drive of the vertical drive component.

[0009] Furthermore, the vertical drive assembly includes a vertical drive motor and a first rack. The first rack is fixed to the vertical slide rail. The vertical drive motor is fixed to the vertical slide table, and a vertical drive gear is provided on its output end. The vertical drive gear can cooperate with the first rack to realize the free sliding of the vertical slide table in the vertical direction.

[0010] Furthermore, the horizontal movement component includes a horizontal slide rail, a horizontal slide table, and a horizontal drive component. The horizontal slide rail is fixed to the vertical slide table and can rise or fall synchronously with the vertical sliding. The horizontal slide table is slidably connected to the horizontal slide rail and can slide freely in the horizontal direction under the drive of the horizontal drive component.

[0011] Furthermore, the horizontal drive assembly includes a horizontal drive motor and a second rack. The second rack is fixed to a horizontal slide rail. The horizontal drive motor is fixed to a horizontal slide table, and a horizontal drive gear is provided at its output end. The horizontal drive gear can cooperate with the second rack to realize the free movement of the horizontal slide table in the horizontal direction.

[0012] Furthermore, the longitudinal drive component adopts a longitudinal telescopic rod.

[0013] Furthermore, the mounting bracket includes a bracket base and two sets of guide rail brackets. The two sets of guide rail brackets are fixedly fixed to the bracket base at intervals. The vertical movement component is mounted on one set of guide rail brackets. A connecting bracket is fixed to the middle of the other set of guide rail brackets. The thermal imaging camera is mounted in the middle of the connecting bracket.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] This invention utilizes a thermal imaging camera to collect the overall temperature of the unexposed side of a fire door specimen. Integrated with a host computer, the temperature data from the thermal imaging camera can be viewed directly. Simultaneously, a three-axis motion module drives thermocouples to specific positions for more accurate temperature data acquisition; this approach saves labor costs while improving testing efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the vertical moving component in this utility model. Figure 1 (Enlarged view of part A in the middle)

[0018] Figure 3 This is a schematic diagram of the structure of the horizontal moving component in this utility model. Figure 1 (Enlarged view of part B in the middle section).

[0019] Reference numerals: 1. Mounting bracket; 2. Thermal imaging camera; 3. Electrical control system box; 4. Three-axis movement module; 5. Horizontal movement component; 5-1. Horizontal slide rail; 5-2. Horizontal slide table; 5-3. Horizontal drive motor; 5-4. Second rack; 6. Vertical movement component; 6-1. Vertical slide rail; 6-2. Vertical slide table; 6-3. Vertical drive motor; 6-4. First rack; 7. Longitudinal drive component. Detailed Implementation

[0020] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper side", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] like Figure 1As shown, an automatic temperature measurement platform for fire door fire resistance testing based on a thermal imaging camera includes a mounting bracket 1, and thermocouples, a thermal imaging camera 2, an electrical control system box 3, thermocouple fixing components, and a three-axis motion module 4, all mounted on the mounting bracket 1. The thermocouples are mounted on the moving end of the three-axis motion module 4, enabling three-axis movement under the drive of the module 4 to achieve positioning and detection of different positions on the fire door under test. The thermal imaging camera 2 is fixed at the center of the mounting bracket 1 and is used to acquire images of the unexposed side of the fire door under test. The electrical control system box 3 is used to receive the temperature images acquired by the thermal imaging camera 2.

[0023] like Figure 1 , 2 As shown in Figure 3, the three-axis movement module 4 includes a horizontal movement component 5, a vertical movement component 6, and a longitudinal drive component 7. The horizontal movement component 5 is mounted on the moving end of the vertical movement component 6 and can move vertically under the drive of the vertical movement component 6. The longitudinal drive component 7 is mounted on the moving end of the horizontal movement component 5 and can move horizontally under the drive of the horizontal movement component 5. A thermocouple is mounted on the moving end of the longitudinal drive component 7 and can switch between approaching and moving away from the fire door being tested under the drive of the longitudinal drive component 7.

[0024] like Figure 2 As shown, the vertical moving component 6 includes a vertical slide rail 6-1, a vertical slide table 6-2, and a vertical drive component. The vertical slide rail 6-1 is positioned along the height of the mounting bracket 1 and is fixed to the mounting bracket 1. The vertical slide table 6-2 is slidably connected to the vertical slide rail 6-1 and can slide freely in the vertical direction under the drive of the vertical drive component.

[0025] In this embodiment, the vertical drive assembly includes a vertical drive motor 6-3 and a first rack 6-4. The first rack 6-4 is fixed to the vertical slide rail 6-1. The vertical drive motor 6-3 is fixed to the vertical slide table 6-2, and a vertical drive gear is provided at its output end. The vertical drive gear can cooperate with the first rack 6-4 to enable the vertical slide table 6-2 to slide freely in the vertical direction.

[0026] like Figure 3 As shown, the horizontal moving component 5 includes a horizontal slide rail 5-1, a horizontal slide table 5-2, and a horizontal drive component. The horizontal slide rail 5-1 is fixed to the vertical slide table 6-2 and can rise or fall synchronously with the vertical sliding. The horizontal slide table 5-2 is slidably connected to the horizontal slide rail 5-1 and can slide freely in the horizontal direction under the drive of the horizontal drive component.

[0027] In this embodiment, the horizontal drive assembly includes a horizontal drive motor 5-3 and a second rack 5-4. The second rack 5-4 is fixed to the horizontal slide rail 5-1. The horizontal drive motor 5-3 is fixed to the horizontal slide table 5-2, and a horizontal drive gear is provided at its output end. The horizontal drive gear cooperates with the second rack 5-4 to enable free movement of the horizontal slide table 5-2 in the horizontal direction.

[0028] The longitudinal drive component 7 is a longitudinal telescopic rod. This rod is mounted on the horizontal slide table 5-2. Thermocouples are mounted on the moving end of the longitudinal telescopic rod via thermocouple fixing components. During operation, the thermocouples move towards the side of the fire door being tested, driven by the longitudinal telescopic rod, thus enabling the detection of various points on the fire door.

[0029] In this embodiment, the mounting bracket 1 includes a bracket base and two sets of guide rail brackets. The two sets of guide rail brackets are fixedly fixed to the bracket base at intervals. The vertical moving component 6 is mounted on one set of guide rail brackets. A connecting bracket is fixed to the middle of the other set of guide rail brackets. The thermal imaging camera 2 is mounted in the middle of the connecting bracket, so that the thermal imaging camera 2 is located in the middle of the entire mounting bracket 1, thereby realizing the detection of the unexposed surface of the entire fire door under test.

[0030] The working principle of this utility model is as follows:

[0031] Place mounting bracket 1 2 meters away from the fire door under test and conduct a fire resistance test. Turn on thermal imaging camera 2 to capture images of the unexposed side of the fire door specimen. Simultaneously, the electrical control system box 3, connected to thermal imaging camera 2, receives the temperature information of the unexposed side and displays it in the host computer software. Click the corresponding position on the unexposed side image in the software.

[0032] By driving the horizontal drive motor 5-3 and the vertical drive motor 6-3, the longitudinal drive component 7, fixed on the horizontal slide table 5-2, is moved to the corresponding position. Subsequently, the thermocouple extends forward under the drive of the longitudinal drive component 7 until it abuts against the corresponding position on the unexposed side of the fire door being tested, thus realizing the detection of the corresponding point.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An automatic temperature measurement platform for fire resistance testing of fire doors based on a thermal imaging camera, characterized in that: The system includes a mounting bracket (1), and a thermocouple, a thermal imaging camera (2), an electrical control system box (3), a thermocouple fixing component, and a three-axis motion module (4) mounted on the mounting bracket (1). The thermocouple is mounted on the moving end of the three-axis motion module (4) through the thermocouple fixing component and can perform three-axis motion under the drive of the three-axis motion module (4). The thermal imaging camera (2) is fixed at the center of the mounting bracket (1) and is used to collect the image of the unexposed side of the fire door being tested. The electrical control system box (3) is used to receive the temperature image collected by the thermal imaging camera (2).

2. The automatic temperature measurement platform for fire door fire resistance testing based on a thermal imaging camera according to claim 1, characterized in that: The three-axis moving module (4) includes a horizontal moving component (5), a vertical moving component (6), and a longitudinal driving component (7); the horizontal moving component (5) is installed on the moving end of the vertical moving component (6) and can move along the vertical direction under the drive of the vertical moving component (6); the longitudinal driving component (7) is installed on the moving end of the horizontal moving component (5) and can move along the horizontal direction under the drive of the horizontal moving component (5); the thermocouple is installed on the moving end of the longitudinal driving component (7) through a thermocouple fixing component and can switch between approaching or moving away from the fire door being tested under the drive of the longitudinal driving component (7).

3. The automatic temperature measurement platform for fire door fire resistance testing based on a thermal imaging camera according to claim 2, characterized in that: The vertical moving component (6) includes a vertical slide rail (6-1), a vertical slide table (6-2), and a vertical driving component; the vertical slide rail (6-1) is arranged along the height direction of the mounting bracket (1) and is fixed to the mounting bracket (1); the vertical slide table (6-2) is slidably connected to the vertical slide rail (6-1) and can slide freely in the vertical direction under the drive of the vertical driving component.

4. The automatic temperature measurement platform for fire door fire resistance testing based on a thermal imaging camera according to claim 3, characterized in that: The vertical drive assembly includes a vertical drive motor (6-3) and a first rack (6-4); the first rack (6-4) is fixed on the vertical slide rail (6-1); the vertical drive motor (6-3) is fixed on the vertical slide (6-2), and a vertical drive gear is provided on its output end; the vertical drive gear can cooperate with the first rack (6-4) to realize the free sliding of the vertical slide (6-2) in the vertical direction.

5. The automatic temperature measurement platform for fire door fire resistance testing based on a thermal imaging camera according to claim 3, characterized in that: The horizontal moving component (5) includes a horizontal slide rail (5-1), a horizontal slide table (5-2), and a horizontal driving component; the horizontal slide rail (5-1) is fixed on the vertical slide table (6-2) and can rise or fall synchronously with the vertical sliding; the horizontal slide table (5-2) is slidably connected to the horizontal slide rail (5-1) and can slide freely in the horizontal direction under the drive of the horizontal driving component.

6. The automatic temperature measurement platform for fire door fire resistance testing based on a thermal imaging camera according to claim 5, characterized in that: The horizontal drive assembly includes a horizontal drive motor (5-3) and a second rack (5-4); the second rack (5-4) is fixed on the horizontal slide rail (5-1); the horizontal drive motor (5-3) is fixed on the horizontal slide (5-2), and a horizontal drive gear is provided on its output end; the horizontal drive gear can cooperate with the second rack (5-4) to realize the free movement of the horizontal slide (5-2) in the horizontal direction.

7. The automatic temperature measurement platform for fire door fire resistance testing based on a thermal imaging camera according to claim 2, characterized in that: The longitudinal drive component (7) adopts a longitudinal telescopic rod.

8. The automatic temperature measurement platform for fire door fire resistance testing based on a thermal imaging camera according to claim 2, characterized in that: The mounting bracket (1) includes a bracket base and two sets of guide rail brackets; the two sets of guide rail brackets are fixed at intervals on the bracket base; the vertical moving component (6) is installed on one set of guide rail brackets; a connecting bracket is fixed in the middle of the other set of guide rail brackets; and the thermal imaging camera (2) is installed in the middle of the connecting bracket.

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