Building component water spray impact resistance test method and system

Abstract

The invention discloses a building component water spray impact resistance test method and system, and the test method comprises the steps: determining impact parameters according to the parameters of a tested sample and the fire resistance test time; judging whether the water impact path trajectory diagram is correct or not; if yes, track point information in the impact path track diagram is converted into control variable information; generating a control signal according to the impact parameter; and according to the control signal and the control variable information, controlling a water impact path trajectory diagram of the building component water spray impact resistance test system to carry out a building component water spray impact resistance test. According to the invention, the mechanical arm is adopted to carry out the water impact test, no person is needed to participate in the test, and the safety risk of personnel in the test process is reduced; the mechanical arm is adopted for the water impact test, the water impact path track can be preset through the computer, the water impact path track diagram is confirmed and verified before the formal water impact test, the problem that the impact path is wrong in the test process during manual operation can be avoided, and the accuracy and fairness of the test are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of building component testing, and particularly relates to a method and system for testing the water spray impact resistance of building components. Background Art

[0002] Fire resistance is an important property of building components. Good fire resistance enables building components to maintain their structural functions during a fire, and can also confine the fire within a certain space, ensuring the fire safety of buildings. However, building components will be damaged under the action of external forces such as collapsed furniture or other heavy objects and the water column of a fire hose during fire extinguishing in an actual fire, causing the building components to lose their original functions, and thus enabling the fire to spread rapidly. In such a situation, it is necessary to consider testing the water spray impact performance of building components immediately after a fire resistance test. Currently, some building components such as fire doors, fire windows, and fireproof sealing materials used in key positions are required to undergo a water spray impact performance test immediately after a fire resistance limit test.

[0003] The current national standard does not require specific implementation methods and procedures for the water spray impact performance test. Currently, the disclosed related technologies perform the water spray impact performance test by manually operating a fire hose or using a general mechanical mechanism to operate the water gun.

[0004] Chinese Patent CN202411203176.7 proposes an automatic water spray detection device and detection method for fire-resistant building components. This invention relates to the technical field of fire-resistant building component testing. The base is the load-bearing base of the device. At the top of the base, a first gear-rack mechanism is installed, which is connected to a first servo motor to achieve X-axis drive. An X-axis origin sensor is installed on the outer wall of the base. A Z-axis support wall panel is installed on the top of the first gear-rack mechanism. By pressing the start button, each servo axis will complete a water impact test action according to the contour data of the specimen and parameters such as the servo motion path configured in the parameter settings. During the process of performing a water impact test action, the interpolation and following motion of each servo axis are automatically calculated and executed by the control system, achieving increased positioning accuracy and stepless speed change for the transmission components. The industrial control computer and the motion controller are combined for parameter setting and logic program control to meet various motion path requirements. The implementation of this method requires the use of servo motors, gear-rack structures, etc. to control the spray gun. The water spray impact process needs to be combined with a lidar imaging sensor for positioning. On the one hand, systems such as servo motors and gear-rack structures are relatively complex, the water impact process requires a large amount of computation, and the probability of failure is high. On the other hand, a large amount of water vapor will be generated during the water spray process, which will cause great interference to the positioning of the lidar imaging system, possibly resulting in a serious deviation of the water spray route from the predetermined value, and it is not very operable in practice. Chinese Patent CN103033427B discloses a method for water impact resistance test of building components after fire resistance test. This method is to impact the surface of the high-temperature building components after fire resistance test with a high-pressure water column. The pressure of the high-pressure water column is controlled by a controller, and an evaluation of the water impact resistance performance of the building components after fire resistance test is obtained based on the pressure of the high-pressure water column, the impact time of the water column, and the state of the building components after the test. The device for implementing the above method includes a water tank, a water pump, a frequency converter, a PID controller, a pressure sensor, and a water gun. The water pump is used to pump the water in the water tank to the water gun. A pressure sensor is arranged on the downstream pipeline of the water pump, and the pressure sensor is connected to the PID controller; the PID controller is connected to the frequency converter; the frequency converter is connected to the water pump. The present invention proposes to conduct a water impact resistance performance test on building components after fire resistance test, which can more comprehensively evaluate the fire safety performance of building components, has great theoretical research and practical application value, and uses PID technology for control, with high test accuracy. This method uses manual operation of the fire-fighting water gun, does not involve the control method of the water impact speed, nor does it mention the preset of the water impact path. During the actual operation process, the control accuracy of the water impact path is low and the repeatability is poor.

[0005] Chinese Patent CN202310965772.8 proposes a method and device for anti-water-jet impact test. Using an automated control logic, after the test starts, no manual intervention is required. The test device automatically determines the data of building partition components, formulates the water-jet impact route, and automatically drives each execution unit, enabling the water-jet impact test to be fully automated. The anti-water-jet impact test method and device provided by the present invention can completely eliminate the differences and personnel safety issues in manual operations, ensuring the accuracy of specimen verification. Chinese Patent CN202211293500.X proposes a fire door automatic detection water-jet impact testing machine, including a testing machine and a control console. The control console is electrically connected to the testing machine. The testing machine includes a mounting base. An X-axis guide rail is provided on the upper surface of the mounting base. A lifting column is slidably provided in the X-axis guide rail. The lifting column is connected to the X-axis guide rail through an X-axis driving mechanism, so that the X-axis driving mechanism drives the lifting column to move linearly along the X-axis guide rail. A water gun spraying system is arranged on one side of the lifting column to adjust the distance H between the water gun spraying system and the specimen. A Z-axis guide rail is provided on one side wall of the lifting column. A horizontal cantilever beam is slidably arranged in the Z-axis guide rail. The horizontal cantilever beam is connected to the Z-axis guide rail through a Z-axis driving mechanism, which can solve the problem that the existing water-jet impact test of fire doors cannot be carried out at multiple angles and multiple distances, resulting in inaccurate data and requiring manual operation, reducing the detection efficiency. On the one hand, related patents all need to use complex mechanical structures to control the spray gun, with complex process operations, a high probability of failure, and a low degree of automation. Summary of the Invention

[0006] In order to overcome the above technical defects, the present invention provides a method and system for anti-water-jet impact test of building components, which can improve the accuracy of the test.

[0007] The present invention is realized through the following solutions: A method for anti-water-jet impact test of building components, applied to a system for anti-water-jet impact test of building components. The system for anti-water-jet impact test of building components includes: solenoid valve, water pump, fire fighting water gun, robotic arm. The method for anti-water-jet impact test of building components includes the steps: Determine the impact parameters according to the parameters of the sample to be tested and the fire resistance test time; Judge whether the water impact path trajectory diagram is correct; If it is correct, convert the trajectory point information in the water impact path trajectory diagram into control variable information; Generate a control signal according to the impact parameters; Control the water impact path trajectory diagram of the system for anti-water-jet impact test of building components to carry out the anti-water-jet impact test of building components according to the control signal and the control variable information.

[0008] As a further improvement of the present invention, the parameters of the sample to be measured include: the height and width of the sample to be measured, and the impact parameters include: the total number of internal water impacts in the vertical movement direction, the total number of internal water impacts in the horizontal movement direction, and the water impact test pressure; The step of determining the impact parameters according to the parameters of the sample to be measured and the fire resistance test time includes: Calculating the total number of internal water impacts in the vertical movement direction according to the width of the sample to be measured, and calculating the total number of internal water impacts in the horizontal movement direction according to the height of the sample to be measured; Determining the water impact test pressure according to the fire resistance test time.

[0009] As a further improvement of the present invention, the impact parameters include: the length of the first complete impact cycle path and the length of the second complete impact cycle path; The step of determining the impact parameters according to the parameters of the sample to be measured and the fire resistance test time includes: Calculating the length of the first complete impact cycle path and the length of the second complete impact cycle path respectively according to the height, width, the total number of internal water impacts in the vertical movement direction, and the total number of internal water impacts in the horizontal movement direction.

[0010] As a further improvement of the present invention, the impact parameter includes: the total water impact time, and the step of determining the impact parameter according to the parameters of the sample to be measured and the fire resistance test time includes: Calculating the total water impact time according to the fire resistance test time, height, and width.

[0011] As a further improvement of the present invention, if the time of the building component's anti - water spray impact test reaches the total water impact time, then the building component's anti - water spray impact test system is shut down.

[0012] As a further improvement of the present invention, the impact parameters include: the optimal moving speed and the optimal number of cycles; The step of determining the impact parameters according to the parameters of the sample to be measured and the fire resistance test time includes: Calculating the optimal moving speed according to the total water impact time, the length of the first complete impact cycle path, and the length of the second complete impact cycle path; Determining the optimal number of cycles according to the optimal moving speed.

[0013] As a further improvement of the present invention, if the water impact path trajectory diagram meets the set rules, it is determined that the water impact path trajectory diagram is correct, and the set rules include: First, impact along the perimeter of the sample to be measured, starting from any bottom corner of the sample to be measured and moving upward; Subsequently, after the water flow covers the periphery of the sample to be measured, make the water flow move along the vertical direction and impact at set intervals until the entire width direction of the sample to be measured is impacted. Finally, the water flow moves horizontally and impacts at set intervals until the entire height direction of the sample under test is covered; If the impact cycle has not been completed, return to the step of continuing to control the water flow to move in the numerical direction and continue execution.

[0014] As a further improvement of the present invention, the step of generating a control signal according to the impact parameters includes: Generating a first control signal for controlling the solenoid valve and a second signal for controlling the water pump according to the water impact test pressure.

[0015] As a further improvement of the present invention, the step of converting the trajectory point information in the water impact path trajectory diagram into control variable information includes: Calculating a first angle between the line connecting the trajectory point and the center point of the fire hose nozzle and the horizontal line; Calculating a second angle between the line connecting the trajectory point and the center vertical line of the surface of the sample under test and the center point of the fire hose nozzle; Converting into control variable information for controlling the robotic arm according to the first angle and the second angle.

[0016] The present invention also provides a building component anti-water spray impact test system for implementing the above-mentioned building component anti-water spray impact test method, including: a specimen frame, a fire hose, a pressure gauge, a fire hose, a computer, a controller, a water tank, a solenoid valve, a water pump, a pressure sensor, a robotic arm, a hose connection pipe, a pipeline; The specimen frame is used to place the sample under test; The robotic arm is placed beside the specimen frame, the hose connection pipe is arranged on the execution mechanism of the robotic arm, and both ends of the hose connection pipe are respectively connected to the fire hose and the fire hose, and the pressure gauge is arranged on the hose connection pipe; The fire hose is connected to the water tank through the pipeline; The solenoid valve, the water pump, and the pressure sensor are arranged on the pipeline; The control box is connected to the robotic arm, the pressure sensor, the water pump, the solenoid valve, and the computer.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: a mechanical arm is used to perform a water shock test, and no human participation in the test is required, thereby reducing the safety risks of personnel during the test process; a mechanical arm is used to perform a water shock test, and the water shock path trajectory can be preset by a computer, and the water shock path trajectory diagram can be confirmed and verified before the formal water shock test, thereby avoiding the problem of incorrect shock route during the test process during manual operation, and improving the accuracy and fairness of the test; the water pump can be automatically controlled to start and stop, and the total time of the water shock test can be linked and controlled in a countdown manner, thereby improving the accuracy of time control, and avoiding the problem of incorrect water shock time when the water shock test is manually performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein: Figure 1 This is a flow chart of the test method for the water jet impact resistance of building components described in Example 1; Figure 2 Another flow chart of the water jet impact resistance test method for building components described in Example 1; Figure 3 A coordinate diagram of the sample to be tested described in Example 1; Figure 4 This is a flow chart for calculating the impact parameters described in Example 1; Figure 5 is a schematic diagram of the impact test in Example 1; Figure 6 is a schematic diagram of the first angle ∠Y in Example 1; Figure 7 is a schematic diagram of the second angle ∠X in Example 1; Figure 8 This is a schematic diagram of the overall structure of the building component water spray impact resistance test system described in Example 2; Figure 9 This is a schematic diagram of the structure of the robotic arm described in Example 2.

[0019] Explanation of the accompanying reference numerals: 1. sample frame; 2. fire hose; 3. pressure gauge; 4. fire hose; 5. computer; 6. controller; 7. water tank; 8. solenoid valve; 9. water pump; 10. pressure sensor; 11. robotic arm; 12. water gun connecting pipe; 13. pipeline; 14. water gun fixing elbow; 15. water hose bracket; 100. sample to be tested. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present invention, the serial numbers of each step are only used to distinguish between steps and do not represent that each step needs to be strictly executed in the order of the serial numbers.

[0022] Embodiment 1 This embodiment provides a method for testing the resistance of building components to water spray impact, which is applied to a testing system for the resistance of building components to water spray impact. The testing system for the resistance of building components to water spray impact includes: a solenoid valve, a water pump, a fire hose nozzle, and a robotic arm, as Figure 1 and Figure 2 shown. The method for testing the resistance of building components to water spray impact includes the following steps: S1. Determine the impact parameters according to the parameters of the sample to be tested, the moving speed of the water impact point on the surface of the sample to be tested, and the fire resistance test time FT. Among them, the parameters of the sample to be tested include: the height SH and width SW of the sample to be tested, as Figure 3 shown. The distances Cx and Cy of the center of the sample to be tested from the origin (i.e., the center offset) are relative to the fire door. Generally, the height SH is the height outside the door frame, in meters; the width SW is generally the width outside the door frame, in meters. Taking the center of the fire-exposed surface of the specimen frame as the origin, the horizontal line passing through the origin on the fire-exposed surface of the specimen frame as the x-axis, the right side as positive and the left side as negative, and the vertical line passing through the origin on the fire-exposed surface of the specimen frame as the y-axis, the upper side as positive and the lower side as negative; the distance Cx is the deviation of the center point of the fire-exposed surface of the sample to be tested from the origin in the x-axis direction, with the right side being positive and the left side being negative, in meters; the distance Cy is the deviation of the center point of the fire-exposed surface of the sample to be tested from the origin in the y-axis direction, with the upper side being positive and the lower side being negative, in meters. The unit of the fire resistance test time FT is h.

[0023] The impact parameters include: the total number of internal water impacts NV in the vertical movement direction, the total number of internal water impacts NH in the horizontal movement direction, the water impact test pressure P, the length of the first complete impact cycle path, the length of the second complete impact cycle path, the total water impact time, the optimal moving speed, and the optimal number of cycles. As Figure 4 shown, the calculation methods of each impact parameter are as follows: (1) The total number of internal water impacts NV in the vertical movement direction: Calculate the total number of internal water impacts NV in the vertical movement direction according to the width SW of the sample to be tested. It should be noted that the total number of internal water impacts NV in the vertical movement direction does not include the 2 impacts on the door frame, and its unit is: times.

[0024] When SW - 0.305 * int(SW / 0.305) = 0, then the total number of internal water impacts NV in the vertical movement direction = SW / 0.305 - 1; When SW - 0.305 * int(SW / 0.305) > 0, the total number of internal water impact times NV in the vertical movement direction = int(SW / 0.305).

[0025] (2) The total number of internal water impact times NH in the horizontal movement direction: Calculate the total number of internal water impact times NH in the horizontal movement direction according to the height SH of the sample to be measured. It should be noted that the total number of internal water impact times NH in the horizontal movement direction does not include the 2 times of door frame impact, and its unit is: times.

[0026] When SH - 0.305 * int(SH / 0.305) = 0, the total number of internal water impact times NH in the horizontal movement direction = SH / 0.305 - 1; When SH - 0.305 * int(SH / 0.305) > 0, the total number of internal water impact times NH in the horizontal movement direction = int(SH / 0.305).

[0027] (3) The water impact test pressure P: Determine the water impact test pressure P according to the fire resistance test time FT; when the fire resistance test time FT ≥ 3.0, the water impact test pressure P = 0.31 MPa; when the fire resistance test time FT < 3.0, the water impact test pressure P = 0.21 MPa.

[0028] (4) The length C1 of the first complete impact cycle path: The length C1 of the first complete impact cycle path includes one round around the door frame (starting from point A), completing one longitudinal impact on the entire surface and one horizontal impact on the entire surface. Calculate the length C1 of the first complete impact cycle path according to the height SH, width SW, the total number of internal water impact times NV in the vertical movement direction, and the total number of internal water impact times NH in the horizontal movement direction respectively; The calculation formula for the length C1 of the first complete impact cycle path is as follows: C1 = SW * (NH + 3) + SH * (NV + 3) - 2 * 0.305 (5) The length C2 of the second complete impact cycle path: The length C2 of the second complete impact cycle path includes completing one longitudinal impact on the entire surface and one horizontal impact on the entire surface. Calculate the length C2 of the second complete impact cycle path according to the height SH, width SW, the total number of internal water impact times NV in the vertical movement direction, and the total number of internal water impact times NH in the horizontal movement direction respectively; The calculation formula for the length C2 of the second complete impact cycle path is as follows: C2 = SW * (NH + 1) + SH * (NV + 1) (6) The total water impact time HSTT: Calculate the total water impact time according to the fire resistance test time FT, height SH, and width SW. The specific calculation method is as follows: When FT < 1.0, the total water impact time HSTT = SH * SW * 6; When 1.0 ≤ FT < 1.5, the total water impact time HSTT = SH * SW * 10; When 1.5 ≤ FT < 3.0, the total water impact time HSTT = SH * SW * 16; When FT ≥ 3.0, the total water impact time HSTT = SH * SW * 32.

[0029] (7) Optimal moving speed Vbest and optimal cycle number CycleN: As Figure 5 shown, to make the water spray impact point move uniformly on the surface of the sample under test, so as to be able to complete one cycle of impact, or two cycles of impact, etc., so that each part of the sample under test can withstand the same impact, thus avoiding the uneven water impact caused by the too fast or too slow moving speed of the impact point. Therefore, the optimal moving speed Vbest needs to be designed, and the unit is m / s. The specific calculation method is to calculate the optimal moving speed Vbest according to the total water impact time HSTT, the length C1 of the first complete impact cycle path, and the length C2 of the second complete impact cycle path. Specifically, V1 = C1 / HSTT; V2 = C2 / HSTT. Subsequently, the optimal cycle number CycleN is determined according to the optimal moving speed Vbes.

[0030] When V1 > 0.9, Vbest = V1, CycleN = 1; When V1 < 0.9, but V1 + V2 ≥ 0.9, Vbest = V1 + V2, CycleN = 2; ...... When V1 + (N - 1) * V2 < 0.9, but V1 + N * V2 ≥ 0.9, CycleN = N + 1.

[0031] S2. Obtain the x-axis and y-axis coordinates of the water impact path trajectory, generate and display the water impact path trajectory diagram, and combine the values of the center offset Cx and Cy to judge whether the water impact path trajectory diagram is correct. Specifically, if the water impact path trajectory diagram meets the set rules, it is judged that the water impact path trajectory diagram is correct. The set rules include: First, impact along the perimeter of the sample under test, starting from any bottom corner of the sample under test and moving upward; Subsequently, after the water flow covers the periphery of the sample under test, make the water flow move along the vertical direction and impact at intervals of 305 mm until the entire width direction of the sample under test is impacted; Finally, the water flow moves along the horizontal direction and impacts at intervals of 305 mm until the entire height direction of the sample under test is covered; If the total water impact HSTT has not been reached, then return to the step of continuing to control the water flow to move along the numerical direction and continue to execute.

[0032] As one of the implementation manners, the water impact path trajectory diagram can be generated by the following method: Based on the x-axis and y-axis coordinates, according to the size parameters of the sample under test, the center offsets Cx and Cy, and the preset interval distance, calculate the coordinates of each feature point in the water impact path. According to the path pattern, generate the coordinate sequence of the feature points in sequence according to the number of cycles, and control the water spraying device to perform a full-automatic water spraying impact test according to the coordinate sequence; the preset interval distance is used to determine the total number of water impacts in the vertical movement direction, the total number of water impacts in the horizontal movement direction, and the interval positions of the feature points. Among them, the path pattern is determined according to the total number of internal water impacts NH in the horizontal movement direction and the total number of internal water impacts NV in the vertical movement direction.

[0033] S3. If it is correct, convert the trajectory point information in the water impact path trajectory diagram into control variable information. As Figure 6 and Figure 7 shown, calculate the first angle ∠Y between the connection line of the trajectory point and the center point of the fire hose nozzle and the horizontal line; calculate the second angle ∠X between the connection line of the trajectory point and the center vertical line of the surface of the sample under test; according to the first angle ∠Y and the second angle ∠X, convert them into control variable information for controlling the robotic arm, that is, control the rotation angle of the J3 axis according to the first angle ∠Y, and control the rotation angle of the J1 axis according to the second angle ∠X.

[0034] If it is incorrect, readjust the water impact path trajectory diagram until it is correct.

[0035] S4. Generate control signals according to the impact parameters, generate the first control signal for controlling the solenoid valve, and generate the second signal for controlling the water pump according to the water impact test pressure P. Specifically, during the test, open the solenoid valve of the water supply pipeline, generate the first control signal for controlling the frequency of the water pump inverter according to the water impact test pressure P, and start the water pump.

[0036] S5. Control the water impact path trajectory diagram of the building component anti-water spraying impact test system to perform the building component anti-water spraying impact test according to the control signals and control variable information. At the same time, the robotic arm moves at the best moving speed Vbest within the total water impact time HSTT.

[0037] S6. When the building component anti-water spraying impact test time reaches the total water impact time HSTT, turn off the building component anti-water spraying impact test system. At this time, output a control signal to the water pump inverter to reduce the water pressure to the lowest, and then close the solenoid valve of the water supply pipeline, and the water impact test ends.

[0038] Embodiment 2 This embodiment provides a building component anti-water spraying impact test system for implementing the building component anti-water spraying impact test method in Embodiment 1, asFigure 8 As shown in the figure, it includes: a specimen frame 1, a fire hose nozzle 2, a pressure gauge 3, a fire hose 4, a computer 5, a controller 6, a water tank 7, a solenoid valve 8, a water pump 9, a pressure sensor 10, a robotic arm 11, a water gun connecting pipe 12, and a pipeline 13. The specimen frame 1 is used to place the sample to be tested 100 and is vertically erected at a position more than 6 m away from the nozzle of the fire hose nozzle 2. The robotic arm 11 is placed beside the specimen frame 1. The water gun connecting pipe 12 is arranged on the actuator of the robotic arm 11. The two ends of the water gun connecting pipe 12 are respectively connected to the fire hose nozzle 2 and the fire hose 4. The pressure gauge 3 is arranged on the water gun connecting pipe 12. The fire hose 4 is connected to the water tank 7 through the pipeline 13. The solenoid valve 8, the water pump 9, and the pressure sensor 10 are arranged on the pipeline 13. The control box is connected to the robotic arm 11, the pressure sensor 10, the water pump 9, the solenoid valve 8, and the computer 5. The pressure gauge 3 can observe the water pressure during the test in real time.

[0039] In order to enable the actuator of the robotic arm 11 to better cooperate with the water gun connecting pipe 12, the building component anti-water spray impact test system further includes: a water gun fixed elbow 14 fixed on the actuator of the robotic arm 11, and the water gun connecting pipe 12 is located on the water gun fixed elbow 14.

[0040] In addition, a water hose support 15 is further arranged below the fire hose 4. The fire hose 4 is located directly above the robotic arm 11, and its direction is basically parallel to the direction of the robotic arm 11. The water hose support 15 is used to support the fire hose 4, and the height of its horizontal section from the ground is 1.0 - 2.5. As Figure 9 shown in the figure, the robotic arm 11 is a six-axis robotic arm 11, and its load is 10 - 50 kg. During the operation of the robotic arm 11, through the movement of the J3 axis, the angle change and adjustment of the second included angle ∠X in the water impact path are realized, and through the movement of the J1 axis, the angle change and adjustment of the first included angle ∠Y in the water impact path are realized. The robotic arm 11 automatically performs water impact tests according to the pre-set water impact path trajectory diagram, and is not affected by the water vapor formed on the surface of the high-temperature specimen on the path determination.

[0041] In the specific test process, the computer 5 gives a signal to open the solenoid valve 8 of the water supply pipeline, and at the same time outputs the corresponding frequency signal to the water pump 9 inverter according to the water impact test pressure P, and starts the water pump 9. Wait for the pressure data of the pressure sensor 10 to stabilize. After the pressure data of the pressure sensor 10 stabilizes, the computer 5 gives a signal, and the mechanical arm 11 controls the fire hose 2 to perform the water impact test from the preset position according to the path point of the input impact path trajectory diagram, and the total water impact time HSTT starts to count down; when the computer 5 detects that the total water impact time HSTT = 0, it immediately outputs a signal to the water pump 9 inverter to reduce the water pressure to the minimum, and then closes the solenoid valve 8 of the water supply pipeline, and at the same time outputs a signal to the mechanical arm 11 to restore the mechanical arm 11 to the origin, and the water impact test ends.

[0042] In summary, the building component water jet impact resistance test method and building component water jet impact resistance test system of the present invention have the following beneficial effects: (1) The water impact test is carried out using a robotic arm, which does not require human participation in the test, reducing the safety risks of personnel during the test process; (2) The water impact test is carried out using a robotic arm, and the water impact path trajectory can be preset by computer. The water impact path trajectory diagram can be confirmed and verified before the formal water impact test, which can avoid the problem of incorrect impact path during the test process during manual operation and improve the accuracy and fairness of the test; (3) It can calculate the optimal water impact point moving speed and the optimal water impact cycle number, so that the water impact point moves evenly on the surface of the sample under test, so that one cycle of impact, or two cycles of impact, etc. can be fully executed, so that each part of the sample under test can be subjected to the same impact, thereby avoiding the uneven water impact caused by the impact point moving speed being too fast or too slow; on the other hand, the water impact test is carried out using a robotic arm, which can evenly impact the sample under test at a stable moving speed in both horizontal and vertical directions, and can realize the operation of water impact at the optimal water impact point moving speed, thereby further improving the accuracy and fairness of the test; (4) By controlling the start and stop of the water pump through a computer, the total time of the water shock test can be controlled in a countdown manner, which can improve the accuracy of time control and avoid the problem of water shock time errors when manually performing water shock tests; (5) By positioning and presetting the water impact position before the formal water impact test and combining it with high-precision control of the robotic arm, the water impact point can be accurately controlled, which can reduce the possibility of failures caused by water impact analysis calculations, detection addressing calculations, etc. during the water impact process, and reduce the probability of errors in the actual water impact point and water impact path.

[0043] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A method for testing the resistance of building components to water jet impact, applied to a testing system for testing the resistance of building components to water jet impact, the testing system for testing the resistance of building components to water jet impact comprising: Solenoid valve, water pump, fire hose, mechanical arm, characterized in that the test method for building component resistance to water spray impact comprises the steps of: Determine the impact parameters according to the parameters of the tested sample and the fire resistance test time; Determine whether the water impact path trajectory diagram is correct; If it is correct, the trajectory point information in the water impact path trajectory diagram is converted into control variable information; generating a control signal according to the impact parameter; The water impact path trajectory diagram of the building component water spray impact resistance test system is controlled according to the control signal and the control variable information to carry out the building component water spray impact resistance test.

2. The method for testing the building component against water jet impact according to claim 1, characterized in that: The parameters of the tested sample include: the height and width of the tested sample, and the impact parameters include: the total number of internal water impacts in the vertical moving direction, the total number of internal water impacts in the horizontal moving direction, and the water impact test pressure; The step of determining the impact parameters according to the parameters of the sample to be tested and the fire resistance test time comprises: The total number of internal water impacts in the vertical moving direction is calculated according to the width of the sample being tested, and the total number of internal water impacts in the horizontal moving direction is calculated according to the height of the sample being tested; Determine the water impact test pressure based on the fire resistance test time.

3. The method for testing the building component against water jet impact according to claim 2, characterized in that: The impact parameters include: a first complete impact cycle path length, a second complete impact cycle path length; The step of determining the impact parameters according to the parameters of the sample to be tested and the fire resistance test time comprises: The first complete impact cycle path length and the second complete impact cycle path length are calculated respectively according to the height, width, the total number of water impacts in the vertical moving direction, and the total number of water impacts in the horizontal moving direction.

4. The method for testing the building component against water jet impact according to claim 3, characterized in that: The impact parameters include: total water impact time, and the step of determining the impact parameters according to the parameters of the tested sample and the fire resistance test time includes: Calculate the total water impact time based on the fire resistance test time, height and width.

5. The method for testing the building component against water jet impact according to claim 4, characterized in that: If the building component water spray impact resistance test time reaches the total water impact time, the building component water spray impact resistance test system is closed.

6. The method for testing the building component against water jet impact according to claim 4, characterized in that: The impact parameters include: optimal moving speed and optimal number of cycles; The step of determining the impact parameters according to the parameters of the sample to be tested and the fire resistance test time comprises: Calculate the optimal moving speed according to the total water impact time, the first complete impact cycle path length, and the second complete impact cycle path length; Determine the optimal number of cycles based on the optimal movement speed.

7. The method for testing the building component against water jet impact according to claim 1, characterized in that: If the water impact path trajectory diagram satisfies the set rules, it is determined that the water impact path trajectory diagram is correct, and the set rules include: First, impact along the four sides of the sample, starting from any bottom corner of the sample and moving upward; After that, after the water flow covers the periphery of the sample to be tested, the water flow is moved in the vertical direction and impacts at set intervals until the entire width of the sample to be tested is impacted; Finally, the water flow moves in the horizontal direction and impacts at set intervals until the entire height direction of the sample is covered; If the impact cycle has not been completed, the water flow is controlled to move in the vertical direction, and the impact is performed at intervals of a set distance until the entire width of the sample is impacted. Then the water flow is controlled to move in the horizontal direction, and the impact is performed at intervals of a set distance until the entire height of the sample is covered. If the impact cycle has not been completed, the process returns to the step of continuing to control the water flow to move in the numerical direction.

8. The method for testing the building component against water jet impact according to claim 2, characterized in that: The step of generating a control signal according to the impact parameter comprises: A first control signal for controlling the solenoid valve is generated, and a second signal for controlling the water pump is generated according to the water shock test pressure.

9. The method for testing the building component against water jet impact according to claim 1, characterized in that: The step of converting the track point information in the water impact path track diagram into control variable information comprises: Calculate the first angle between the trajectory point, the line connecting the center point of the fire hose muzzle and the horizontal line; Calculate the second angle between the line connecting the trajectory point, the center point of the fire hose muzzle and the vertical line at the center of the surface of the sample being tested; According to the first angle and the second angle, the control variable information for controlling the robot arm is converted.

10. A building component water jet impact test system, characterized in that: A method for testing the water spray impact resistance of building components according to any one of claims 1 to 9, comprising: a specimen frame, a fire hose, a pressure gauge, a fire hose, a computer, a controller, a water tank, a solenoid valve, a water pump, a pressure sensor, a mechanical arm, a water gun connecting pipe, and a pipeline; The sample frame is used to place the sample to be tested; The mechanical arm is placed beside the sample frame, the water gun connecting pipe is arranged on the actuator of the mechanical arm, the two ends of the water gun connecting pipe are respectively connected to the fire water gun and the fire hose, and the pressure gauge is arranged on the water gun connecting pipe; The fire hose is connected to the water tank through the pipeline; The solenoid valve, the water pump, and the pressure sensor are arranged on the pipeline; The control box is connected to the mechanical arm, the pressure sensor, the water pump, the solenoid valve, and the computer.

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