An automatic testing bench for the calorific value of building materials

Abstract

This utility model provides an automatic testing bench for the calorific value of building materials, belonging to the technical field of calorific value testing equipment. It includes a support frame, a rotating mechanism, an insulated container, an extraction mechanism, and a filling mechanism. Through the coordinated operation of the rotating mechanism, extraction mechanism, and filling mechanism, automatic filling, handling, and testing of oxygen bombs are achieved. The operator only needs to place multiple oxygen bombs and add building material powder at once; the system can then complete the filling, transfer, and testing processes sequentially according to a preset program, eliminating the need for manual operation. This design not only significantly improves testing efficiency but also frees the operator's hands, allowing them to perform other tasks simultaneously. Furthermore, the automated process reduces human error and improves the accuracy and consistency of test data. The automated design of the filling mechanism avoids the potential dangers of manual operation of high-pressure oxygen, reduces safety risks during the testing process, and ensures the personal safety of the testing personnel.

Description

Technical Field

[0001] This utility model relates to the technical field of combustion calorific value testing equipment, specifically to an automatic testing bench for the combustion calorific value of building materials. Background Technology

[0002] In recent years, frequent building fires have caused serious casualties and property damage, bringing widespread attention to the flammability of building materials. The flame-retardant properties of many building materials have become increasingly prominent, and their quality has become a focus of public concern. Therefore, accurately determining the calorific value of building materials is crucial for assessing their fire resistance.

[0003] Currently, the testing instruments used in laboratories generally have the following problems: First, when testing oxygen bombs with added building material powder, high-pressure oxygen needs to be manually added to the oxygen bomb. After one test is completed, oxygen is added to the next oxygen bomb with added building material powder. This means that the tester must always be on duty next to the dangerous pressure vessel and repeatedly perform manual operations, which poses a certain degree of danger. Second, the need for manual filling of high-pressure oxygen into the oxygen bomb also increases the working danger for the tester. Summary of the Invention

[0004] To overcome the above shortcomings, this utility model provides an automatic testing bench for the calorific value of building materials, which solves the problems of requiring test personnel to stay in front of the test bench for a long time and being unable to perform other work, as well as the danger of excessive gas pressure during the oxygen bomb filling process.

[0005] This utility model is implemented as follows:

[0006] An automatic testing bench for the calorific value of building materials is provided. The testing bench is equipped with a support frame, on which an insulated barrel is mounted. The testing bench further comprises: an auxiliary frame, a rotating mechanism, an extraction mechanism, and an inflation mechanism. The auxiliary frame is positioned above the support frame; the rotating mechanism is mounted on the support frame and has multiple oxygen bombs mounted on it; the extraction mechanism is slidably connected to the auxiliary frame; the inflation mechanism is fixedly connected to the extraction mechanism and is mounted on the auxiliary frame; an inflation connector is located below the inflation mechanism and is configured to cooperate with the gas inlet of the oxygen bombs.

[0007] In addition, the automatic testing bench for the calorific value of building materials provided by the present invention may also have the following additional technical features:

[0008] In the above technical solution, the rotating mechanism includes: a first servo motor and a turntable. The first servo motor is fixedly connected to the support frame. The turntable is driven by the output end of the first servo motor, and the turntable is provided with multiple positioning slots, which are configured to cooperate with the oxygen bomb.

[0009] In the above technical solution, the extraction mechanism includes: a lower support plate, a servo push rod, an upper support plate, and an upper lifting component. The lower support plate is slidably connected to the auxiliary frame; the fixed end of the servo push rod is fixedly connected to the auxiliary frame, and the output end of the servo push rod is fixedly connected to the lower support plate; the upper support plate is located above the lower support plate; and the lifting component is located on the lower support plate and the upper support plate.

[0010] In the above technical solution, the lifting component includes: a second servo motor, a small synchronous pulley, a nut seat, a large synchronous pulley, a ball screw, and a chuck. The second servo motor is disposed between the upper support plate and the lower support plate; the small synchronous pulley is fixedly sleeved on the output end of the second servo motor; the nut seat is rotatably connected to the upper support plate; the large synchronous pulley is connected to the small synchronous pulley via a synchronous belt, and the large synchronous pulley is fixedly sleeved on the nut seat; the ball screw is configured to cooperate with the nut seat; and the chuck is disposed at the bottom of the ball screw and is configured to cooperate with the oxygen bomb.

[0011] In the above technical solution, the inflation mechanism is a pneumatic slide, which is fixedly connected to the lower support plate, and an inflation connector is provided below the pneumatic slide.

[0012] Compared with the prior art, this utility model has the following advantages:

[0013] 1. Through the coordinated operation of the rotating mechanism, extraction mechanism, and inflation mechanism, the automatic inflation, handling, and testing of oxygen bombs are achieved. The test operator only needs to place multiple oxygen bombs at once and add building material powder, and the system can complete the inflation, transfer, and testing process sequentially according to the preset program, without the need for manual operation. This design not only significantly improves the efficiency of the test but also frees up the test operator's hands, allowing them to perform other tasks simultaneously and optimizing the utilization of human resources. In addition, the automated process reduces human error and improves the accuracy and consistency of test data.

[0014] 2. The inflation mechanism adopts an automated design, with an inflation connector located below the inflation mechanism to achieve automatic inflation of the oxygen bomb, completely avoiding the potential dangers of manual operation of high-pressure oxygen. In the traditional inflation process, the tester needs to manually connect the high-pressure gas source, which poses risks of gas leakage, connector detachment, or even explosion. However, this test bench ensures a stable and reliable inflation process through mechanical positioning and automatic docking technology, greatly reducing the safety risks during the test. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of an automatic testing bench for the calorific value of building materials according to the present invention;

[0017] Figure 2 This is a schematic diagram of the rotating mechanism of an automatic testing bench for the calorific value of building materials according to the present invention;

[0018] Figure 3 This is a schematic diagram of the extraction mechanism of an automatic testing bench for the calorific value of building materials according to this utility model;

[0019] Figure 4 This is a schematic diagram of the air-filling mechanism of an automatic testing bench for the calorific value of building materials according to this utility model.

[0020] In the diagram: 1. Support frame; 11. Auxiliary frame; 2. Rotating mechanism; 21. First servo motor; 22. Turntable; 23. Positioning slot; 3. Oxygen bomb; 4. Insulation tank; 5. Extraction mechanism; 51. Lower support plate; 52. Servo push rod; 53. Upper support plate; 54. Lifting component; 541. Second servo motor; 542. Small synchronous pulley; 543. Large synchronous pulley; 544. Ball screw; 545. Claw; 546. Nut seat; 6. Inflation mechanism; 61. Pneumatic slide; 7. Inflation connector. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] An automatic testing bench for the calorific value of building materials, such as Figure 1 As shown, the test bench is equipped with a support frame 1, on which a heat preservation tank 4 is mounted. The test bench is characterized by further comprising: an auxiliary frame 11, a rotating mechanism 2, an extraction mechanism 5, and an inflation mechanism 6. The auxiliary frame 11 is mounted above the support frame 1; the rotating mechanism 2 is mounted on the support frame 1, and multiple oxygen bombs 3 are mounted on the rotating mechanism 2; the extraction mechanism 5 is slidably connected to the auxiliary frame 11; the inflation mechanism 6 is fixedly connected to the extraction mechanism 5 and mounted on the auxiliary frame 11; an inflation connector 7 is located below the inflation mechanism 6, and the inflation connector 7 is configured to cooperate with the gas inlet of the oxygen bomb 3.

[0023] In this way, through the coordinated work of the rotating mechanism 2, the extraction mechanism 5, and the inflation mechanism 6, the automatic inflation, handling, and testing of the oxygen bomb 3 are achieved. The test operator only needs to place multiple oxygen bombs 3 at a time and add building material powder, and the system can complete the inflation, transfer, and testing process sequentially according to the preset program, without the need for manual operation. This design not only significantly improves the efficiency of the test but also frees up the test operator's hands, allowing them to perform other tasks simultaneously and optimizing the utilization of human resources. In addition, the automated process reduces human error and improves the accuracy and consistency of test data. The inflation mechanism 6 adopts an automated design, with an inflation connector 7 located below it, enabling automatic inflation of the oxygen bomb 3 and completely avoiding the potential dangers of manual operation of high-pressure oxygen. In the traditional inflation process, the test operator needs to manually connect the high-pressure gas source, which poses risks of gas leakage, connector detachment, or even explosion. However, this test bench ensures a stable and reliable inflation process through mechanical positioning and automatic docking technology, greatly reducing the safety risks during the test.

[0024] In embodiments of this utility model, such as Figure 2 As shown, the rotating mechanism 2 includes a first servo motor 21 and a turntable 22. The first servo motor 21 is fixedly connected to the support frame 1. The turntable 22 is drivenly connected to the output end of the first servo motor 21, and the turntable 22 is provided with multiple positioning slots 23, which are configured to cooperate with the oxygen bomb 3. In this way, the rotating mechanism 2 can drive the oxygen bomb 3 on the turntable 22 to rotate a certain angle, and rotate the second oxygen bomb 3 to the operating position. The extraction mechanism 5 extracts the second oxygen bomb 3 and places it in the heat preservation barrel 4 for testing. This process is repeated until all oxygen bombs 3 have been tested.

[0025] In embodiments of this utility model, such as Figure 3 As shown, the extraction mechanism 5 includes: a lower support plate 51, a servo push rod 52, an upper support plate 53, and an upper lifting component 54. The lower support plate 51 is slidably connected to the auxiliary frame 11; the fixed end of the servo push rod 52 is fixedly connected to the auxiliary frame 11, and the output end of the servo push rod 52 is fixedly connected to the lower support plate 51; the upper support plate 53 is disposed above the lower support plate 51; and the lifting component 54 is disposed on the lower support plate 51 and the upper support plate 53.

[0026] In embodiments of this utility model, such as Figure 1-2As shown, the lifting component 54 includes: a second servo motor 541, a small synchronous pulley 542, a nut seat 546, a large synchronous pulley 543, a ball screw 544, and a chuck 545. The second servo motor 541 is disposed between the upper support plate 53 and the lower support plate 51; the small synchronous pulley 542 is fixedly sleeved on the output end of the second servo motor 541; the nut seat 546 is rotatably connected to the upper support plate 53; the large synchronous pulley 543 is connected to the small synchronous pulley 542 via a synchronous belt, and the large synchronous pulley 543 is fixedly sleeved on the nut seat 546; the ball screw 544 is configured to cooperate with the nut seat 546; and the chuck 545 is disposed at the bottom of the ball screw 544 and is configured to cooperate with the oxygen bomb 3.

[0027] In this way, the servo push rod 52 pushes the lower support plate 51 to slide horizontally along the auxiliary frame 11, so that the entire extraction mechanism 5 moves to the position directly above the oxygen bomb 3. The second servo motor 541 is powered on and drives the small synchronous pulley 542 to rotate. Through the synchronous belt drive, the small synchronous pulley 542 drives the large synchronous pulley 543 to rotate. The large synchronous pulley 543 drives the nut seat 546 to rotate on the upper support plate 53. The rotating nut seat 546 drives the ball screw 544 that cooperates with it to make vertical lifting and lowering movements. When the ball screw 544 moves downward, it drives the bottom claw 545 to approach the oxygen bomb 3. When the claw 545 descends to the top of the oxygen bomb 3, it catches the oxygen. Oxygen bomb 3 is lifted from turntable 22 by the second servo motor 541 reversing and raising the ball screw 544 via synchronous belt drive. The servo push rod 52 moves, pulling the lower support plate 51 horizontally to transport the extracted oxygen bomb 3 to the target position (e.g., above the insulation tank 4). After reaching the target position, the second servo motor 541 starts again, causing the ball screw 544 to descend. The chuck 545 releases, placing the oxygen bomb 3 into the target position (inside the insulation tank 4). The ball screw 544 rises back, and the chuck 545 returns to its initial height. The servo push rod 52 drives the lower support plate 51 back to its initial position, ready for the next extraction operation.

[0028] In embodiments of this utility model, such as Figure 4 As shown, the inflation mechanism 6 is a pneumatic slide 61, which is fixedly connected to the lower support plate 51. An inflation connector 7 is provided below the pneumatic slide 61. In this way, the pneumatic slide 61 drives the quick inflation connector 7 to move downward until the quick inflation connector 7 is inserted into the oxygen bomb 3 gas inlet, and begins to inflate the oxygen bomb 3. This inflation method solves the danger of manually operating high-pressure gas.

[0029] Implementation process: During use, the operator adds multiple building material powders to the oxygen bomb 3, and then places the oxygen bomb 3 on the turntable 22 of the rotating mechanism 2. At this time, the extraction mechanism 5 on the test platform moves to the right a certain distance under the control of the program. The pneumatic slide 61 drives the quick inflation connector 7 to move downward until the quick inflation connector 7 is inserted into the oxygen bomb 3's gas inlet, and begins to inflate the oxygen bomb 3. This inflation method solves the danger of manually operating high-pressure gas. After the oxygen bomb 3 is inflated, the extraction structure 5 continues to move to the right under the drive of the servo push rod 52. After moving a certain distance, the chuck 545 on the extraction structure 5 locks the oxygen bomb 3. Then, the second servo motor 541 on the extraction mechanism 5 rotates, passing through the small synchronous pulley 542, synchronous belt, large synchronous pulley 543, and ball screw 54. 4. The oxygen bomb 3 is lifted off the turntable 22; the extraction mechanism 5 moves to the left under the action of the servo push rod 52; when it reaches the top of the insulation barrel 4, the second servo motor 541 on the extraction mechanism 5 rotates and moves the oxygen bomb 3 downward through the small synchronous pulley 542, synchronous belt, large synchronous pulley 543, and ball screw 544, placing the oxygen bomb 3 into the insulation barrel 4 to start the test; after the test, the extraction mechanism 5 lifts the oxygen bomb 3 from the insulation barrel 4 and puts it back on the turntable 22; then the turntable 22 rotates at a certain angle under the drive of the first servo motor 21, and moves the second oxygen bomb 3 to the operating position; the extraction mechanism 5 extracts the second oxygen bomb 3 and puts it into the insulation barrel 4 for testing; this process is repeated until multiple oxygen bombs 3 have been tested; this saves manpower, improves testing efficiency, and frees the hands of the testers.

[0030] It should be noted that the specific models and specifications of the first servo motor 21, the servo push rod 52, and the second servo motor 541 need to be selected and determined according to the actual specifications of the device, and therefore will not be described in detail.

[0031] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A building material combustion heat value automatic test bench, the test bench is provided with a support frame (1), the support frame (1) is provided with a heat preservation barrel (4), characterized in that, The test bench also mainly includes: Auxiliary frame (11) is provided above the support frame (1). Rotating mechanism (2), the rotating mechanism (2) is mounted on support frame (1), and multiple oxygen bombs (3) are mounted on the rotating mechanism (2); Extraction mechanism (5), which is slidably connected to auxiliary frame (11); An inflation mechanism (6) is fixedly connected to an extraction mechanism (5) and is mounted on an auxiliary frame (11). An inflation connector (7) is provided below the inflation mechanism (6), and the inflation connector (7) is configured to cooperate with the gas inlet of the oxygen bomb (3).

2. The automatic test bench for building material combustion heat value according to claim 1, characterized in that, The rotating mechanism (2) includes: The first servo motor (21) is fixedly connected to the support frame (1); Turntable (22) is connected to the output end of the first servo motor (21) and has multiple positioning slots (23) on it. The positioning slots (23) are configured in conjunction with the oxygen bomb (3).

3. The automatic building material combustion heat value test bed according to claim 1, characterized in that, The extraction mechanism (5) includes: The lower support plate (51) is slidably connected to the auxiliary frame (11). Servo push rod (52), the fixed end of the servo push rod (52) is fixedly connected to the auxiliary frame (11), and the output end of the servo push rod (52) is fixedly connected to the lower support plate (51). An upper support plate (53) is disposed above the lower support plate (51); Lifting component (54) is disposed on the lower support plate (51) and the upper support plate (53).

4. The automatic testing bench for the calorific value of building materials according to claim 3, characterized in that, The lifting component (54) includes: The second servo motor (541) is disposed between the upper support plate (53) and the lower support plate (51); Small synchronous pulley (542), which is fixedly sleeved on the output end of the second servo motor (541); Nut seat (546), which is rotatably connected to the upper support plate (53); Large synchronous pulley (543), which is connected to small synchronous pulley (542) via synchronous belt, and the large synchronous pulley (543) is fixedly sleeved on nut seat (546). A ball screw (544) is provided in conjunction with a nut seat (546); The chuck (545) is located at the bottom of the ball screw (544) and is configured in conjunction with the oxygen bomb (3).

5. The automatic testing bench for the calorific value of building materials according to claim 1, characterized in that, The inflation mechanism (6) is a pneumatic slide (61), which is fixedly connected to the lower support plate (51). An inflation connector (7) is provided below the pneumatic slide (61).

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