Building material incombustibility experiment device

Abstract

The utility model relates to the technical field of building material incombustibility experiments, and discloses a building material incombustibility experiment device which comprises a base, a fixing frame is arranged at the top of the base, a furnace body is clamped and fixed in the fixing frame, the bottom of the furnace body is communicated with a refractory pipe, an ash collecting box is arranged at the inner bottom of the base, and the refractory pipe extends into the supporting base. A supporting plate is arranged on the side, located on the furnace body, of the top wall of the fixing frame, a guide rod is arranged on the side, facing the furnace body, of the supporting plate in the vertical direction, a transverse plate is arranged on the guide rod in a sliding and sleeving mode, and an electric driving part for driving the transverse plate to ascend and descend is arranged on the supporting plate. The end, away from the guide rod, of the transverse plate is downwards provided with a hanging rod coaxial with the furnace body, and the hanging rod is detachably provided with a hanging frame used for containing building material samples. The method has the effect of improving the accuracy and reliability of the test result.

Description

Technical Field

[0001] The present application relates to the technical field of building material non-combustibility testing, and in particular to a building material non-combustibility testing device. Background Art

[0002] With the rapid development of the construction industry and increasing demands for building safety, the combustion performance of building materials has become a crucial consideration. Combustion performance refers to the physical and chemical changes that occur when a material burns or is exposed to fire. It is measured by surface ignition, flame spread, heat generation, smoke generation, carbonization, weight loss, and the production of toxic products. Combustion performance test results are crucial for evaluating material fire safety, guiding building design and construction, and implementing fire supervision.

[0003] In the prior art, a building material non-combustibility test furnace is generally used to simulate a real fire environment and conduct combustion tests on building materials to evaluate their stability and non-combustibility in fire.

[0004] Chinese patent publication number CN213147411U discloses a building material non-combustibility test furnace, which includes a base, a collection bin provided in the middle of the bottom of the base, support rods A symmetrically provided on both sides of the top of the base, a mounting block provided on the top of the support rods A, a detection cylinder provided inside the mounting block, and the detection cylinder extending into the interior of the base, collars B provided on the top and bottom of both sides of the mounting block, a fixing bolt C provided in the middle of the collar B away from the mounting block, and the fixing bolt C extending into the interior of the collar B.

[0005] The position of the material bag used to hold the building material sample within the combustion furnace in the aforementioned non-combustibility test furnace is primarily determined by manually raising and lowering mounting rod B and tightening collar A and mounting rod B with fixing bolts. In actual testing, the same building material requires multiple sets of tests under identical conditions to eliminate haphazard effects. Only through comprehensive evaluation of these multiple sets of experiments can the non-combustibility performance of the building material be assessed. The position of the building material sample within the combustion furnace is closely linked to the completeness of combustion. The aforementioned non-combustibility test furnace relies on manual sample placement and height adjustment, which inevitably results in errors in sample height within the furnace during multiple tests, thus impacting the accuracy and reliability of the test results. Utility Model Content

[0006] In order to improve the accuracy and reliability of test results, the present application provides a building material non-combustibility test device.

[0007] The present application provides a building material non-combustibility test device that adopts the following technical solution:

[0008] A building material non-combustibility test device comprises a base, a fixing frame is provided on the top of the base, a furnace body is clamped and fixed in the fixing frame, a refractory tube is provided at the bottom of the furnace body, an ash box is provided at the bottom of the base, the refractory tube extends into the supporting base and is located directly above the ash box, a support plate is provided on the top wall of the fixing frame on one side of the furnace body, a guide rod is vertically provided on the side of the support plate facing the furnace body, a horizontal plate is slidingly sleeved on the guide rod, and an electric drive part for driving the horizontal plate to rise and fall is provided on the support plate, a suspension rod coaxially arranged with the furnace body is installed downward on the end of the horizontal plate away from the guide rod, and a suspension frame for placing building material samples is detachably provided on the suspension rod.

[0009] By adopting the above technical solution, the electric drive components are used to accurately control the lifting position of the hanging frame and the building material samples, eliminating manual operation errors and improving the accuracy and reliability of the test results.

[0010] Optionally, a motor box is provided on the top of the support plate and the guide rod, and the electric drive component includes a screw rod arranged between the motor box and the support plate and rotating parallel to the guide rod, and a servo motor driving the screw rod to rotate. A through hole is vertically opened on the upper portion of the horizontal plate for the screw rod to pass through, and a threaded sleeve coaxial with the screw rod and threadedly matched is installed in the through hole. The screw rod passes through the threaded sleeve by threaded rotation. The servo motor is located in the motor box, and its output shaft rotates through the motor box and is coaxially fixedly connected to the screw rod.

[0011] By employing this technical solution, the experimenter activates the servo motor via a remote control. This servo motor drives the screw, which, through threaded engagement, drives the crossbar along the guide rod, thereby precisely controlling the height of the hanging frame and building material specimen. This structure eliminates the error associated with manual adjustment of specimen position, improving the accuracy and reliability of test results.

[0012] Optionally, a scale ruler is vertically provided on the side wall of the support plate adjacent to the side facing the horizontal plate, and the horizontal plate and the marking side wall of the scale ruler are fitted together.

[0013] By adopting the above technical solution, the setting of the scale ruler makes it convenient for the experimenter to intuitively read the specific height of the cross plate, especially when conducting multiple non-combustibility tests on the same building material. It is necessary to observe whether the readings on the scale ruler of the cross plate docking after the samples are lowered in each group of tests are consistent, so as to prevent the possibility of a decrease in accuracy due to a servo motor failure and further improve the accuracy and reliability of the test results.

[0014] Optionally, a bevel is provided on one side of the horizontal plate facing the support plate and pointing to the scale ruler, and the bevel tip on the horizontal plate is fitted with the scale ruler.

[0015] By adopting the above technical solution, the angled setting reduces the contact area between the horizontal plate and the support plate, thereby reducing the friction generated by the contact between the horizontal plate and the support plate when the horizontal plate is raised or lowered, thereby reducing the possibility of wear on both sides caused by friction between the horizontal plate and the support plate when the horizontal plate is raised or lowered.

[0016] Optionally, a positioning plate is provided on the side wall of the base close to the bottom, a positioning pole is provided on the positioning plate, and an observation mirror is hingedly installed on the top end of the positioning pole.

[0017] By adopting the above technical solution, the setting of the observation mirror makes it easier for the experimenter to observe the combustion conditions inside the furnace.

[0018] Optionally, the positioning upright includes a positioning sleeve and a positioning sleeve rod, the side wall of the positioning sleeve rod is provided with a tooth groove parallel to the axial direction, and a gear that engages with the tooth groove is rotatably provided on the positioning sleeve, and a driving motor that drives the gear to rotate is provided on the side wall of the positioning sleeve.

[0019] By adopting the above technical solution, the experimenter starts the drive motor through the remote control device, and drives the gear to rotate through the drive motor. Due to the meshing setting between the gear and the tooth groove, the rotating gear can drive the positioning sleeve rod and the positioning sleeve to move relative to each other, and the height of the positioning pole can be flexibly adjusted to further meet different observation needs.

[0020] Optionally, a plurality of balls are arranged axially in the positioning sleeve, and the positioning sleeve rod is passed through the plurality of balls and is arranged to abut against the plurality of balls.

[0021] By adopting the above technical solution, the setting of the ball can reduce the friction generated by the telescopic activity between the positioning sleeve and the positioning sleeve rod, thereby improving the smoothness of the positioning sleeve rod sliding in the positioning sleeve and making the height adjustment of the positioning pole smoother.

[0022] Optionally, a plurality of reinforcing ribs are arranged on the bottom side wall of the positioning upright pole along its own circumference, and the bottom wall of each reinforcing rib is arranged to contact the positioning plate.

[0023] By adopting the above technical solution, the reinforcing ribs can effectively prevent the positioning pole from shaking or tilting when subjected to force, thereby further enhancing the structural stability of the positioning pole.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. The electric drive unit is used to precisely control the lifting position of the hanging frame and building material samples, eliminating manual operation errors and improving the accuracy and reliability of test results;

[0026] 2. The experimenter activates the servo motor via a remote control device, which drives the screw. The screw, through the threaded engagement, drives the cross plate up and down along the guide rod, thereby precisely controlling the height position of the hanging frame and building material specimen. This structure eliminates the error of manual adjustment of the specimen position, improving the accuracy and reliability of the test results.

[0027] 3. The setting of the scale ruler makes it easy for the experimenter to read the specific height of the cross plate intuitively. Especially when the non-combustibility test of the same building material is carried out multiple times, it is necessary to observe whether the readings on the scale ruler of the cross plate docking after the specimens are lowered in each test are consistent, so as to prevent the possibility of a decrease in accuracy due to a servo motor failure and further improve the accuracy and reliability of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0029] Figure 2 It is a cross-sectional view of the overall structure of an embodiment of the present application.

[0030] Figure 3 yes Figure 1 Enlarged view of point A in the middle.

[0031] Description of reference numerals:

[0032] 1. Base; 11. Positioning plate; 2. Fixing frame; 3. Furnace body; 4. Ash box; 5. Refractory tube; 6. Support plate; 61. Guide rod; 62. Horizontal plate; 621. Through hole; 622. Threaded sleeve; 63. Motor box; 64. Scale; 7. Hanging rod; 71. Hanging frame; 8. Electric drive component; 81. Screw; 82. Servo motor; 9. Observation mirror; 91. Positioning pole; 911. Positioning sleeve; 9111. Ball bearing; 9112. Reinforcement rib; 912. Positioning sleeve; 9121. Tooth groove; 9122. Gear; 9123. Drive motor. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-3 This application is described in further detail.

[0034] The embodiment of the present application discloses a building material non-combustibility test device.

[0035] Reference Figure 1 and Figure 2A building material non-combustibility test device includes a base 1, the top of the base 1 is connected to a fixing frame 2 by bolts, and a furnace body 3 is fixed in the fixing frame 2 by a clamp. An ash box 4 is inserted into the bottom of the base 1, and a refractory tube 5 made of high-temperature resistant material is installed in the bottom of the furnace body 3. The refractory tube 5 extends into the support base 1 and is located directly above the ash box 4. A support plate 6 is installed on the top wall of the fixing frame 2 on one side of the furnace body 3 by bolts. A suspension rod 7 is raised and lowered on the support plate 6 toward one side of the furnace body 3. The suspension rod 7 is arranged vertically and is located directly above the opening of the furnace body 3. The bottom of the suspension rod 7 is connected to a suspension frame 71 for placing building material samples by threaded rotation. An electric drive component 8 for driving the suspension rod 7 to rise and fall is provided on the support plate 6, and an observation mirror 9 is also provided on one side of the base 1.

[0036] Reference Figure 1 and Figure 2 Before using the furnace body 3 to conduct a combustion test on the building materials inside, the experimenter first places the building material sample into the hanging frame 71, and then drives the hanging rod 7 down through the electric drive part 8 until the hanging frame 71 containing the building material sample descends to the specified height inside the furnace body 3, and then starts the heating instruction of the furnace body 3 to conduct a combustion test on the building material sample. The ashes produced by the combustion can fall smoothly into the ash box 4 along the refractory tube 5, and the experimenter can observe the combustion status of the building material in the furnace body 3 in real time through the observation mirror 9.

[0037] Reference Figure 1 、 Figure 2 and Figure 3 A guide rod 61 is fixedly provided vertically on the side of the support plate 6 facing the furnace body 3, and a cross plate 62 is slidably sleeved on the guide rod 61. The hanger 7 is fixedly mounted on the bottom wall of the end of the cross plate 62 away from the support plate 6. The electric drive component 8 in this embodiment includes a screw rod 81 and a servo motor 82. A motor box 63 is provided on the top of the support plate 6 and the guide rod 61. The motor box 63 is used to install and protect the servo motor 82. The screw rod 81 is arranged parallel to the guide rod 61 and is rotatably connected between the motor box 63 and the support plate 6 through a bearing. A through hole 621 is vertically opened on the cross plate 62, and a threaded sleeve 622 is installed in the through hole 621. The threaded sleeve 622 is coaxial with the screw rod 81 and threadedly engaged. When the servo motor 82 is started, its output shaft drives the screw rod 81 to rotate, and the screw rod 81 drives the cross plate 62 to rise and fall by threaded engagement with the threaded sleeve 622. This structure enables precise control of the position of the transverse plate 62 , thereby ensuring the position accuracy of the hanging frame 71 and the building material sample in the furnace body 3 .

[0038] Reference Figure 1 and Figure 3A graduated scale 64 is bolted vertically to the sidewall of support plate 6, adjacent to the side facing horizontal plate 62. During the raising and lowering process, the sidewall of horizontal plate 62 always aligns with the marked sidewall of scale 64. This allows the experimenter to directly read the current position of horizontal plate 62 from scale 64, thereby determining the specific height of the building material sample within furnace body 3.

[0039] Reference Figure 3 To further improve the accuracy of position reading, the horizontal plate 62 is beveled on one side, facing the scale 64, toward the support plate 6. When the horizontal plate 62 is raised or lowered, the bevel tip always aligns with the scale 64. This structure reduces the contact area between the horizontal plate 62 and the scale 64, making position reading more accurate.

[0040] Reference Figure 1 In addition, a positioning plate 11 is fixedly mounted on the side wall near the bottom of the base 1. A positioning rod 91 is bolted to the positioning plate 11. An observation mirror 9 is hingedly mounted on the top of the positioning rod 91. The angle of the observation mirror 9 can be adjusted electrically or manually to allow the experimenter to clearly observe the combustion conditions in the furnace body 3.

[0041] Reference Figure 1 and Figure 2 In order to further meet the needs of experimenters to clearly observe the combustion conditions in the furnace body 3, the positioning rod 91 in this embodiment is set to be lifted. The positioning rod 91 includes a positioning sleeve 911 and a positioning sleeve rod 912. A plurality of balls 9111 are embedded in the positioning sleeve 911 along the axial direction. The positioning sleeve rod 912 is inserted between the plurality of balls 9111 and is set to interfere with the plurality of balls 9111. A tooth groove 9121 is provided on the side wall of the positioning sleeve rod 912 parallel to the axial direction, and a gear 9122 is rotatably provided on the positioning sleeve 911 and meshes with the tooth groove 9121. A driving motor 9123 is fixedly provided on the side wall of the positioning sleeve 911. The output shaft of the driving motor 9123 rotates through the side wall of the positioning sleeve 911 and is fixedly connected to the rotating shaft of the gear 9122.

[0042] Reference Figure 1 In order to improve the stability of the positioning rod 91, a plurality of reinforcing ribs 9112 are arranged on the bottom side wall of the positioning sleeve 911 along the circumference of itself. The bottom wall of each reinforcing rib 9112 is set to contact with the positioning plate 11 and is fixed on the side wall of the positioning sleeve 911.

[0043] The implementation principle of the non-combustibility test device of a building material in an embodiment of the present application is as follows: during actual use, first, place the building material sample in the hanging frame 71, and ensure that the hanging frame 71 is firmly mounted on the hanger 7. Next, according to the experimental requirements, adjust the position of the cross plate 62 by operating the servo motor 82 to determine the specific height of the building material sample in the furnace body 3. During this process, the position of the cross plate 62 can be accurately read and confirmed by the scale ruler 64 and the bevel structure. Then, start the furnace body 3 to perform a combustion test on the building material sample, and observe the combustion situation in the furnace body 3 in real time through the observation mirror 9. After the test is completed, close the furnace body 3, raise the cross plate 62 to the appropriate position by the electric drive 8, remove the hanging frame 71 and the building material sample, and carry out subsequent analysis and evaluation work.

[0044] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A building material non-combustibility test device, characterized in that: The invention comprises a base (1), a fixing frame (2) is provided on the top of the base (1), a furnace body (3) is clamped and fixed in the fixing frame (2), a refractory pipe (5) is provided at the bottom of the furnace body (3), an ash collecting box (4) is provided at the bottom of the base (1), the refractory pipe (5) extends into the supporting base (1) and is located directly above the ash collecting box (4), and a support plate (6) is provided on the top wall of the fixing frame (2) on one side of the furnace body (3). A guide rod (61) is vertically arranged on one side of the support plate (6) facing the furnace body (3); a horizontal plate (62) is slidably sleeved on the guide rod (61); and an electric drive member (8) for driving the horizontal plate (62) to rise and fall is arranged on the support plate (6); a suspension rod (7) coaxially arranged with the furnace body (3) is downwardly mounted on the end of the horizontal plate (62) away from the guide rod (61); and a suspension frame (71) for placing building material samples is detachably arranged on the suspension rod (7).

2. A building material non-combustibility test device according to claim 1, characterized in that: The support plate (6) and the top of the guide rod (61) are jointly provided with a motor box (63). The electric drive member (8) comprises a screw rod (81) rotatably provided between the motor box (63) and the support plate (6) in parallel with the guide rod (61), and a servo motor (82) for driving the screw rod (81) to rotate. A through hole (621) for the screw rod (81) to pass through is vertically opened on the horizontal plate (62), and a threaded sleeve (622) coaxial with the screw rod (81) and threadedly matched is installed in the through hole (621). The screw rod (81) passes through the threaded sleeve (622) by thread rotation. The servo motor (82) is located in the motor box (63), and its output shaft rotates through the motor box (63) and is coaxially fixedly connected to the screw rod (81).

3. A building material non-combustibility test device according to claim 2, characterized in that: A scale ruler (64) is vertically arranged on the side wall of the support plate (6) adjacent to the side facing the transverse plate (62), and the transverse plate (62) and the marking side wall of the scale ruler (64) are fitted together.

4. A building material non-combustibility test device according to claim 3, characterized in that: The horizontal plate (62) is provided with an oblique angle on one side of the support plate (6) pointing to the scale ruler (64), and the oblique angle tip on the horizontal plate (62) is fitted with the scale ruler (64).

5. A building material non-combustibility test device according to claim 1, characterized in that: A positioning plate (11) is provided on the side wall of the base (1) near the bottom, a positioning upright rod (91) is provided on the positioning plate (11), and an observation mirror (9) is hingedly installed on the top end of the positioning upright rod (91).

6. A building material non-combustibility test device according to claim 5, characterized in that: The positioning upright rod (91) comprises a positioning sleeve (911) and a positioning sleeve rod (912); a tooth groove (9121) is provided on the side wall of the positioning sleeve rod (912) parallel to the axial direction; a gear (9122) is rotatably provided on the positioning sleeve (911) and meshes with the tooth groove (9121); and a driving motor (9123) is provided on the side wall of the positioning sleeve (911) for driving the gear (9122) to rotate.

7. A building material non-combustibility test device according to claim 6, characterized in that: A plurality of balls (9111) are arranged axially in the positioning sleeve (911), and the positioning sleeve rod (912) is passed through the plurality of balls (9111) and is arranged to contact the plurality of balls (9111).

8. A building material incombustibility test device according to claim 5, characterized in that: A plurality of reinforcing ribs (9112) are arranged on the bottom side wall of the positioning upright (91) along its own circumference, and the bottom wall of each reinforcing rib (9112) is arranged to contact the positioning plate (11).

Images