Fireproof and flame-retardant performance detection equipment for fire extinguishing shielding cover production

Abstract

The invention relates to fireproof flame retardant performance detection equipment for fire extinguishing shielding cover production in the technical field of fire extinguishing equipment detection, and the fireproof flame retardant performance detection equipment comprises a detection box body, a fixed table is fixedly mounted on the inner wall, close to the bottom, of the detection box body, a mounting groove is formed in the middle of the fixed table, and the inner wall of the mounting groove is rotatably connected with a rotating cylinder through a bearing; the supporting cylinder is fixedly installed in the middle of the top of the rotating cylinder, the surface of the supporting cylinder is sleeved with a shielding cover body, three experiment openings from top to bottom are formed in the outer wall of the supporting cylinder, and the included angle between every two adjacent experiment openings is 120 degrees. According to the invention, the problems of displacement and falling of the shielding cover in the detection process are effectively avoided, interference on shielding cover cloth of other stations when the posture of the detection station changes is avoided, meanwhile, the limitation of single-position testing of existing equipment is solved, comprehensive detection of the overall fireproof flame-retardant performance of the shielding cover is realized, and the integrity of a detection result is effectively guaranteed.

Description

Technical Field

[0001] This invention relates to the field of fire extinguishing equipment testing technology, and in particular to fire-retardant performance testing equipment used in the production of fire extinguishing shields. Background Technology

[0002] The fire extinguishing shield is a police protective equipment that integrates core functions such as ultra-high temperature flame retardancy, 360-degree three-dimensional shielding, and restraint control. It is widely used in police operations and is also suitable for handling various fire prevention and firefighting incidents. Its core performance and structure have distinct characteristics: the cover is made of high-strength blended carbon fiber flame-retardant fabric, which can withstand temperatures up to 1000 degrees Celsius and melting temperatures, and can quickly isolate the fire and extinguish the flames inside the cover; the opening adopts a high-elastic steel rod frame design, which can be folded and contracted with toughness and unfolded quickly, and the cover has sufficient space to achieve 360-degree three-dimensional shielding; the cover is equipped with two restraint straps, which can enhance the control of the target and prevent it from getting out of control when tightened.

[0003] Currently, there are many types of existing testing equipment for the flame retardant performance of fireproof materials, such as vertical combustion testers and horizontal combustion testers. However, these devices are mostly general-purpose testing equipment and are difficult to adapt to the special structure, functional requirements, and practical application scenarios of fire extinguishing shields for police use. The specific shortcomings are as follows: First, the fire extinguishing shield combines a flexible folding cover fabric with a rigid high-elastic steel frame and needs to achieve a protective effect in the unfolded state. Existing equipment cannot simulate its unfolded posture in actual police operations. The test environment differs greatly from actual combat conditions, resulting in test results that cannot accurately reflect actual combat reliability. Second, in actual use, the probability of flame attack and stress state of different positions (such as the central area, top, bottom, etc.) of the fire extinguishing shield are different. Testing a single position cannot comprehensively reflect the overall fireproof and flame-retardant performance. Therefore, a fireproof and flame-retardant performance testing device for the production of fire extinguishing shields is proposed to improve the above problems. Summary of the Invention

[0004] To address the above problems, this invention provides a fire-retardant performance testing device for the production of fire extinguishing shields, comprising: The test chamber has a fixed platform fixedly installed on the inner wall near the bottom, and an installation groove is provided in the middle of the fixed platform. The inner wall of the installation groove is rotatably connected to a rotating cylinder through a bearing. The support cylinder is fixedly installed at the top center of the rotating cylinder, and a shield body is fitted on the surface of the support cylinder. The outer wall of the support cylinder has three experimental ports from top to bottom, and the included angle between two adjacent experimental ports is 120 degrees. Three tensioning mechanisms are arranged at equal intervals on the top of the rotating cylinder, and the top of the tensioning mechanisms is clamped to the bottom of the shield body; An anti-detachment mechanism is provided between the rotating cylinder and the support cylinder to restrain the shield body; The burner is movably mounted on one side of the test chamber, and the position of the burner corresponds to the position of the test port; A lifting assembly is disposed between the detection box and the fixed platform for adjusting the height of the burner; A drive mechanism is located at the bottom of the detection box and is used to drive the lifting assembly and the rotating cylinder.

[0005] The present invention is further configured such that the tensioning mechanism includes a fixed cylinder fixedly installed on the top of the rotating cylinder, and a telescopic rod is inserted into the inner wall of the fixed cylinder. A tension spring is fixedly installed at the bottom of the telescopic rod and the bottom inner wall of the fixed cylinder. A tension gauge is fixedly installed at the top of the telescopic rod, and a connecting rod is fixedly installed at the top of the tension gauge. A U-shaped frame is fixedly installed at the top of the connecting rod, and a spring clamp is fixedly installed at the top of the U-shaped frame. Both ends of the top of the spring clamp are rotatably provided with clamps, and the two clamps are clamped at the bottom of the inner and outer walls of the shield body.

[0006] The invention is further configured such that the bottom of the support cylinder has three equally spaced through slots for the tensioning mechanism to move, and the through slots are located below the test port.

[0007] The invention is further configured such that the anti-detachment mechanism includes three movable slots equidistantly opened on the top of the rotating cylinder, and movable seats are slidably arranged on the inner walls of each movable slot. An L-shaped card plate is fixedly installed on the top of each movable seat. One side of each L-shaped card plate is fixed with protrusions distributed at equal intervals. The L-shaped card plate is attached to the outer wall of the shield body. The position of the L-shaped card plate is staggered with the position of the experimental port. A mounting base is fixedly installed in the middle of the top inner wall of the rotating cylinder, and a third mounting hole is opened in the middle of the mounting base. A first rotating shaft is rotatably connected to the inner wall of the third mounting hole through a bearing. A forward and reverse motor for driving the first rotating shaft to rotate is fixedly installed on the bottom inner wall of the rotating cylinder. A rotating disk is fixedly installed on the outer wall of the first rotating shaft, and a push-pull rod is rotatably connected to the top of the rotating disk and the bottom of the movable seat through a pin.

[0008] The present invention is further configured such that a plurality of guide rods are fixedly installed on the outer wall of the mounting base and the inner wall of the rotating cylinder, and a first guide hole is provided on the movable base for the guide rods to pass through.

[0009] The invention is further configured such that the lifting assembly includes a first mounting hole opened on the fixed platform and the top of the detection box, and the inner wall of the first mounting hole is rotatably connected to a threaded column through a bearing, and a lifting seat is screwed to the outer wall of the threaded column. An installation port is opened in the middle of the lifting seat, and the burner is fixedly installed on the inner wall of the installation port. One end of the detection box is opened with a passage for the burner to move. A guide column is fixedly installed on one side of the top of the fixed platform and one side of the top inner wall of the detection box, and a second guide hole is opened on the lifting seat for the guide column to pass through.

[0010] The invention is further configured such that the driving mechanism includes a second mounting hole opened in the middle of the bottom of the detection box, and a second rotating shaft is rotatably connected to the inner wall of the second mounting hole via a bearing. The top of the second rotating shaft is fixedly connected to the bottom of the rotating cylinder. A stepper motor for driving the second rotating shaft to rotate is fixedly installed on the bottom inner wall of the detection box. A small gear is fixedly installed at the bottom end of the threaded column, and a large gear ring is fixedly installed on the bottom of the outer wall of the rotating cylinder. The large gear ring meshes with the small gear.

[0011] The present invention is further configured such that a smoke exhaust assembly is provided on the top of the detection box, and the smoke exhaust assembly includes a smoke exhaust hole opened on the top of the detection box, a smoke exhaust pipe is fixedly installed on the top of the smoke exhaust hole, and a smoke exhaust fan is fixedly installed on the inner wall of the smoke exhaust pipe.

[0012] The present invention is further configured such that universal wheels are fixedly installed at the four bottom corners of the detection box, and a door is provided on one side of the detection box.

[0013] The present invention is further configured such that a control device is fixedly installed on the outer wall of the other end of the detection box, and the control device is electrically connected to the burner, the tension gauge, the forward and reverse motor, the stepper motor and the exhaust fan.

[0014] In summary, by adopting the above structure, the present invention has the following advantages compared with the prior art: 1. In this invention, by using a support cylinder combined with three tensioning mechanisms and an anti-detachment mechanism, the shield body can be stably and securely fixed in a way that fits the actual combat situation. The tensioning mechanism, with the tension of the tension spring and the clamping action of the spring clip, can accurately simulate the stress state of the shield in actual use. At the same time, the clamping tension data is monitored in real time by a tension gauge, providing data support for the accuracy of the working condition simulation. The anti-detachment mechanism is driven by a forward and reverse motor to rotate the rotating disk, which drives the push-pull rod to push and pull the movable seat and L-shaped clamping plate to move, thereby firmly binding the outer wall of the shield body. This effectively avoids the shield from shifting or falling off during the testing process, ensuring the consistency between the testing environment and the actual combat conditions. It successfully solves the problem that existing equipment cannot accurately simulate the actual deployment posture of the shield, ensuring that the test results can truly reflect its actual combat reliability.

[0015] 2. In this invention, three test ports are opened on the outer wall of the support cylinder at an angle of 120 degrees. Combined with a drive mechanism to rotate the rotating cylinder and support cylinder, sequential testing of different positions on the shield body can be achieved. Simultaneously, the lifting assembly can flexibly adjust the height of the burner to meet the requirements for flame erosion testing of different height areas of the shield. This design overcomes the limitations of existing equipment that only tests at a single position, enabling comprehensive testing of the overall fire-retardant performance of the shield and effectively ensuring the integrity of the test results. Furthermore, the anti-detachment mechanism can simultaneously restrain the other two untested positions, preventing interference with the shield fabric of other positions when the posture of the testing position changes, further improving the stability and accuracy of the testing.

[0016] 3. In this invention, the drive mechanism uses a stepper motor to drive the second rotating shaft to rotate. While driving the rotating cylinder to rotate, it simultaneously drives the large gear ring to rotate, which in turn drives the threaded column to rotate through the meshing small gear, thereby realizing the lifting and lowering action of the burner. This design realizes the linkage control of rotation detection and height adjustment, which greatly simplifies the operation process and significantly improves the detection efficiency. At the same time, the smoke exhaust component set on the top of the detection chamber promptly discharges the flue gas generated during the detection process through the smoke exhaust fan and smoke exhaust pipe, avoiding the accumulation of flue gas in the chamber and affecting the detection accuracy, thus taking into account both the safety of the detection environment and the accuracy of the detection data.

[0017] 4. In this invention, the integrated control equipment and display can centrally manage the operation of core components such as burners, forward and reverse motors, stepper motors, and exhaust fans. At the same time, it can display the test data of the tension gauge in real time, so that operators can intuitively grasp the key information in the testing process and improve the convenience of testing operations and the accuracy of data recording. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the fire-retardant performance testing equipment for the production of fire extinguishing shields according to the present invention. Figure 2 This is a front view of the fire-retardant performance testing equipment for the production of fire extinguishing shields according to the present invention; Figure 3 This is a perspective sectional view of the fire-retardant performance testing equipment for the production of fire extinguishing shields according to the present invention. Figure 4 This is a schematic diagram of the smoke exhaust port and mounting groove structure of the fireproof and flame-retardant performance testing equipment for the production of fire extinguishing shields according to the present invention. Figure 5 This is a schematic diagram of the lifting assembly and drive mechanism of the fireproof and flame-retardant performance testing equipment for the production of fire extinguishing shields according to the present invention. Figure 6 This is a schematic diagram of the test port and L-shaped card plate structure of the fireproof and flame-retardant performance testing equipment for the production of fire extinguishing shields according to the present invention. Figure 7 This is a schematic diagram of the through-slot and protrusion structure of the fireproof and flame-retardant performance testing equipment for the production of fire extinguishing shields according to the present invention. Figure 8 This is a schematic diagram of the anti-detachment mechanism of the fireproof and flame-retardant performance testing equipment for the production of fire extinguishing shields according to the present invention. Figure 9 This is a schematic diagram of the mounting base and movable base of the fire-retardant performance testing equipment for the production of fire extinguishing shields according to the present invention. Figure 10 This is a schematic diagram of the tensioning mechanism of the fire-retardant performance testing equipment for the production of fire extinguishing shields according to the present invention. Figure 11 This is a schematic diagram of the tension spring structure of the fireproof and flame-retardant performance testing equipment used in the production of fire extinguishing shields according to the present invention.

[0019] Explanation of the labels in the diagram: 1. Inspection chamber; 2. Control equipment; 3. Exhaust pipe; 4. Burner; 5. Lifting assembly; 51. Threaded column; 52. Lifting seat; 53. Through port; 54. Guide column; 55. Mounting port; 56. First mounting hole; 6. Shield body; 7. Support cylinder; 8. Chamber door; 9. Fixing platform; 10. Rotating cylinder; 11. Tensioning mechanism; 111. Fixing cylinder; 112. Telescopic rod; 113. Force gauge; 114. Spring clamp; 115. Connecting rod; 116. Tensioning spring; 117. U-shaped frame; 118. Clamp. ; 12. Anti-detachment mechanism; 121. Forward and reverse motor; 122. Rotary disk; 123. L-shaped clamping plate; 124. Movable slot; 125. Protrusion; 126. Mounting base; 127. Movable base; 128. First rotating shaft; 129. Push-pull rod; 1210. Guide rod; 13. Drive mechanism; 131. Second rotating shaft; 132. Stepper motor; 133. Second mounting hole; 134. Small gear; 135. Large gear ring; 14. Smoke exhaust fan; 15. Smoke exhaust hole; 16. Mounting slot; 17. Experimental port; 18. Through slot. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] Please see Figures 1-11 This invention provides a fire-retardant performance testing device for the production of fire extinguishing shields, comprising: The test chamber 1 has a fixed platform 9 fixedly installed on the inner wall near the bottom, and a mounting groove 16 is provided in the middle of the fixed platform 9. The inner wall of the mounting groove 16 is rotatably connected to the rotating cylinder 10 through a bearing. The support cylinder 7 is fixedly installed at the top center of the rotating cylinder 10, and the surface of the support cylinder 7 is covered with a shield body 6. The outer wall of the support cylinder 7 has three experimental ports 17 from top to bottom, and the included angle between two adjacent experimental ports 17 is 120 degrees. Three tensioning mechanisms 11 are equidistantly arranged on the top of the rotating cylinder 10, with the top of each tensioning mechanism 11 clamping the bottom of the shield body 6. Each tensioning mechanism 11 includes a fixed cylinder 111 fixedly installed on the top of the rotating cylinder 10, and a telescopic rod 112 inserted into the inner wall of the fixed cylinder 111. A tension spring 116 is fixedly installed at the bottom of the telescopic rod 112 and the bottom inner wall of the fixed cylinder 111. A tension gauge 113 is fixedly installed at the top of the telescopic rod 112, and a connecting rod 115 is fixedly installed at the top of the tension gauge 113. The top of the connecting rod 115 is fixedly... A U-shaped frame 117 is fixedly installed, and a spring clip 114 is fixedly installed on the top of the U-shaped frame 117. Both ends of the top of the spring clip 114 are rotatably provided with clamps 118, and the two clamps 118 clamp the bottom of the inner and outer walls of the shield body 6. The bottom of the support cylinder 7 is provided with three through slots 18 at equal distances for the tensioning mechanism 11 to move. The through slots 18 are located below the experimental port 17. The spring clips 114 of the three tensioning mechanisms 11 clamp the bottom of the inner and outer walls of the shield body 6 through the clamps 118. The tension spring 116 pulls the telescopic rod 112 to keep the shield body 6 in an unfolded position. An anti-detachment mechanism 12 is disposed between the rotating cylinder 10 and the support cylinder 7 to restrain the shield body 6. The anti-detachment mechanism 12 includes three equally spaced movable slots 124 on the top of the rotating cylinder 10, and movable seats 127 are slidably disposed on the inner walls of each movable slot 124. An L-shaped clamping plate 123 is fixedly installed on the top of each movable seat 127. Protrusions 125 are evenly distributed on one side of each L-shaped clamping plate 123, and the L-shaped clamping plate 123 is attached to the outer wall of the shield body 6. The position of the L-shaped clamping plate 123 intersects with the position of the experimental port 17. A mounting base 126 is fixedly installed in the middle of the top inner wall of the rotating cylinder 10, and a third mounting hole is opened in the middle of the mounting base 126. The inner wall of the third mounting hole is rotatably connected to a first rotating shaft 128 through a bearing. A forward and reverse motor 1 is fixedly installed on the bottom inner wall of the rotating cylinder 10 to drive the first rotating shaft 128 to rotate. 21. A rotating disk 122 is fixedly installed on the outer wall of the first rotating shaft 128, and the top of the rotating disk 122 is rotatably connected to the bottom of the movable seat 127 by a pin shaft with a push-pull rod 129. Multiple guide rods 1210 are fixedly installed on the outer wall of the mounting seat 126 and the inner wall of the rotating cylinder 10. The movable seat 127 is provided with a first guide hole for the guide rods 1210 to pass through. The rotating disk 122 is driven to rotate by the forward and reverse motor 121 in the anti-detachment mechanism 12, which drives the push-pull rod 129 to push the movable seat 127 and the L-shaped card plate 123 to move, thereby achieving a firm binding of the outer wall of the shield body 6. This effectively avoids the shield from shifting or falling off during the testing process. At the same time, under the action of the anti-detachment mechanism 12, the other two stations that have not been tested can be bound synchronously to avoid interference with the shield fabric of other stations when the posture of the testing station changes, thereby further improving the stability and accuracy of the test. Burner 4 is movably mounted on one side of the test chamber 1, and the position of burner 4 corresponds to the position of test port 17; The lifting assembly 5 is located between the test chamber 1 and the fixed platform 9 and is used to adjust the height of the burner 4. The lifting assembly 5 includes a first mounting hole 56 on the fixed platform 9 and the top of the test chamber 1. The inner wall of the first mounting hole 56 is rotatably connected to a threaded column 51 via a bearing. The outer wall of the threaded column 51 is screwed to a lifting seat 52. The middle of the lifting seat 52 has an installation port 55, and the burner 4 is fixedly installed on the inner wall of the installation port 55. One end of the test chamber 1 has an opening 53 for the burner 4 to move. A guide column 54 is fixedly installed on one side of the top of the fixed platform 9 and one side of the top inner wall of the test chamber 1. The lifting seat 52 has a second guide hole for the guide column 54 to pass through. When the threaded column 51 rotates, it drives the lifting seat 52 to rise and fall along the guide column 54, adjusting the height of the burner 4 so that the burner 4 corresponds to the test port 17 of the support cylinder 7 in sequence, thereby realizing flame attack testing on different positions of the shield body 6. The drive mechanism 13 is located at the bottom of the detection chamber 1 and is used to drive the lifting assembly 5 and the rotating cylinder 10. The drive mechanism 13 includes a second mounting hole 133 in the middle of the bottom of the detection chamber 1, and a second rotating shaft 131 is rotatably connected to the inner wall of the second mounting hole 133 via a bearing. The top of the second rotating shaft 131 is fixedly connected to the bottom of the rotating cylinder 10. A stepper motor 132 for driving the rotation of the second rotating shaft 131 is fixedly installed on the inner wall of the bottom of the detection chamber 1. A small gear 134 is fixedly installed at the bottom end of the threaded column 51, and a large gear ring 135 is fixedly installed on the bottom of the outer wall of the rotating cylinder 10. The large gear ring 135 meshes with the small gear 134. The stepper motor 132 in the drive mechanism 13 drives the second rotating shaft 131 to rotate 120 degrees in sequence, which synchronously drives the rotating cylinder 10 to rotate and the large gear ring 135 to rotate. Then, the meshing small gear 134 drives the threaded column 51 to rotate, thereby realizing the lifting and lowering of the burner 4, realizing the linkage control of rotation detection and height adjustment.

[0024] In this invention, a smoke exhaust assembly is provided on the top of the testing chamber 1, and the smoke exhaust assembly includes a smoke exhaust hole 15 opened on the top of the testing chamber 1. A smoke exhaust pipe 3 is fixedly installed on the top of the smoke exhaust hole 15, and a smoke exhaust fan 14 is fixedly installed on the inner wall of the smoke exhaust pipe 3. Figure 1 , Figure 2 and Figure 3 As shown, the exhaust fan 14 and exhaust pipe 3 promptly discharge the fumes generated during the testing process, preventing the fumes from accumulating inside the chamber and affecting the testing accuracy, thus ensuring the safety of the testing environment.

[0025] In this invention, casters are fixedly installed at all four corners of the bottom of the testing box 1, and a door 8 is provided on one side of the testing box 1, such as... Figure 1 and Figure 2 As shown, the casters at the bottom of the testing chamber 1 facilitate the movement of the equipment, and the door 8 facilitates the installation and removal of the shield body 6, further improving the ease of operation.

[0026] In this invention, a control device 2 is fixedly installed on the outer wall of the other end of the detection box 1, and a display is provided on the control device 2. The display is used to display the reading of the tension gauge 113. The control device 2, the display, the burner 4, the tension gauge 113, the forward and reverse motor 121, the stepper motor 132, and the exhaust fan 14 are electrically connected, as follows: Figure 1 and Figure 2 As shown, the burner 4, the forward and reverse motor 121, the stepper motor 132, and the exhaust fan 14 are centrally controlled by the control device 2.

[0027] In summary, the working principle of the present invention is as follows: First, the shield body 6 is sleeved on the surface of the support cylinder 7. The spring clips 114 of the three tensioning mechanisms 11 clamp the bottom of the inner and outer walls of the shield body 6 through the clamps 118. The tension spring 116 pulls the telescopic rod 112 to keep the shield body 6 in an unfolded posture. The tension gauge 113 monitors the tension data in real time. Next, the first rotating shaft 128 is driven by the forward and reverse motor 121 in the anti-detachment mechanism 12 to rotate the rotating disk 122. The rotating disk 122 pushes and pulls the movable seat 127 along the guide rod 1210 in the movable groove 124 through the push-pull rod 129, so that the L-shaped card plate 123 and protrusion 125 on the top of the movable seat 127 fit against the outer wall of the shield body 6 to achieve restraint. During testing, the stepper motor 132 of the drive mechanism 13 drives the second rotating shaft 131 to rotate the rotating cylinder 10. The rotating cylinder 10 drives the support cylinder 7 and the shield body 6 to rotate synchronously. At the same time, the large gear ring 135 on the outer wall of the rotating cylinder 10 meshes and drives the small gear 134 to rotate. The small gear 134 drives the threaded column 51 to rotate, causing the lifting seat 52 to rise and fall along the guide column 54, thereby adjusting the height of the burner 4. The burner 4 then performs flame attack tests on different positions of the shield body 6 corresponding to the test port 17 of the support cylinder 7. When the shield fabric at a certain test port 17 changes posture, the tensile reading of the tensile gauge 113 will also change accordingly. At this time, the test data of the tensile gauge 113 is displayed in real time through the control device 2 and the display, which makes it easy for the operator to intuitively grasp the key information in the testing process. During the test, the exhaust fan 14 of the exhaust assembly discharges the flue gas generated by the test box 1 through the exhaust pipe 3 from the exhaust port 15, while the control device 2 centrally manages the burner 4, the forward and reverse motor 121, the stepper motor 132, and the exhaust fan 14.

[0028] In light of current practical needs, the above-described embodiments of this invention are not limited to these specific implementations. Any changes made within the scope of knowledge possessed by those skilled in the art, without departing from the concept of this invention, still fall within the protection scope of this invention.

Claims

1. A fire-retardant performance testing device for the production of fire extinguishing shields, characterized in that, include: The detection box (1) has a fixed platform (9) fixedly installed on the inner wall near the bottom, and an installation groove (16) is provided in the middle of the fixed platform (9). The inner wall of the installation groove (16) is rotatably connected to a rotating cylinder (10) through a bearing. Support cylinder (7), the support cylinder (7) is fixedly installed at the top middle of the rotating cylinder (10), and the surface of the support cylinder (7) is covered with a shield body (6). The outer wall of the support cylinder (7) has three experimental ports (17) from top to bottom, and the included angle between two adjacent experimental ports (17) is 120 degrees. Three tensioning mechanisms (11) are arranged at equal intervals on the top of the rotating cylinder (10), and the top of the tensioning mechanism (11) is clamped to the bottom of the shield body (6); Anti-detachment mechanism (12), which is disposed between the rotating cylinder (10) and the support cylinder (7), is used to restrain the shield body (6). The burner (4) is movably disposed on one side of the test chamber (1), and the position of the burner (4) corresponds to the position of the test port (17); Lifting assembly (5), which is set between the detection box (1) and the fixed platform (9) for adjusting the height of the burner (4); The drive mechanism (13) is located at the bottom of the detection box (1) and is used to drive the lifting assembly (5) and the rotating cylinder (10) to work.

2. The fire-retardant performance testing equipment for the production of fire extinguishing shields according to claim 1, characterized in that, The tensioning mechanism (11) includes a fixed cylinder (111) fixedly installed on the top of the rotating cylinder (10), and a telescopic rod (112) is inserted into the inner wall of the fixed cylinder (111). A tension spring (116) is fixedly installed at the bottom of the telescopic rod (112) and the bottom inner wall of the fixed cylinder (111). A tension gauge (113) is fixedly installed at the top of the telescopic rod (112), and a connecting rod (115) is fixedly installed at the top of the tension gauge (113). A U-shaped frame (117) is fixedly installed at the top of the connecting rod (115), and a spring clip (114) is fixedly installed at the top of the U-shaped frame (117). Both ends of the top of the spring clip (114) are rotatably provided with clamps (118), and the two clamps (118) are clamped at the bottom of the inner and outer walls of the shield body (6).

3. The fire-retardant performance testing equipment for the production of fire extinguishing shields according to claim 2, characterized in that, The bottom of the support cylinder (7) is provided with three equally spaced through slots (18) for the tensioning mechanism (11) to move, and the through slots (18) are located below the test port (17).

4. The fire-retardant performance testing equipment for the production of fire extinguishing shields according to claim 3, characterized in that, The anti-detachment mechanism (12) includes three movable slots (124) equidistantly spaced on the top of the rotating cylinder (10), and movable seats (127) are slidably provided on the inner walls of each movable slot (124). An L-shaped clamping plate (123) is fixedly installed on the top of each movable seat (127). Equidistant protrusions (125) are fixed on one side of each L-shaped clamping plate (123), and the L-shaped clamping plate (123) is attached to the outer wall of the shield body (6). The position of the L-shaped clamping plate (123) intersects with the position of the experimental port (17). The rotating cylinder (10) A mounting base (126) is fixedly installed in the middle of the top inner wall of the rotating cylinder (10), and a third mounting hole is opened in the middle of the mounting base (126). The inner wall of the third mounting hole is rotatably connected to the first rotating shaft (128) through a bearing. A forward and reverse motor (121) for driving the first rotating shaft (128) to rotate is fixedly installed on the bottom inner wall of the rotating cylinder (10). A rotating disk (122) is fixedly installed on the outer wall of the first rotating shaft (128), and a push-pull rod (129) is rotatably connected to the top of the rotating disk (122) and the bottom of the movable seat (127) through a pin.

5. The fire-retardant performance testing equipment for the production of fire extinguishing shields according to claim 4, characterized in that, Multiple guide rods (1210) are fixedly installed on the outer wall of the mounting base (126) and the inner wall of the rotating cylinder (10), and a first guide hole is provided on the movable base (127) for the guide rods (1210) to pass through.

6. The fire-retardant performance testing equipment for the production of fire extinguishing shields according to claim 5, characterized in that, The lifting assembly (5) includes a first mounting hole (56) on the fixed platform (9) and the top of the detection box (1). The inner wall of the first mounting hole (56) is rotatably connected to a threaded column (51) via a bearing. The outer wall of the threaded column (51) is screwed with a lifting seat (52). The middle of the lifting seat (52) is provided with an installation port (55). The burner (4) is fixedly installed on the inner wall of the installation port (55). One end of the detection box (1) is provided with a passage (53) for the burner (4) to move. A guide column (54) is fixedly installed on one side of the top of the fixed platform (9) and one side of the top inner wall of the detection box (1). The lifting seat (52) is provided with a second guide hole for the guide column (54) to pass through.

7. The fire-retardant performance testing equipment for the production of fire extinguishing shields according to claim 6, characterized in that, The drive mechanism (13) includes a second mounting hole (133) in the middle of the bottom of the detection box (1), and a second rotating shaft (131) is rotatably connected to the inner wall of the second mounting hole (133) via a bearing. The top of the second rotating shaft (131) is fixedly connected to the bottom of the rotating cylinder (10). A stepper motor (132) for driving the second rotating shaft (131) to rotate is fixedly installed on the bottom inner wall of the detection box (1). A small gear (134) is fixedly installed at the bottom end of the threaded column (51), and a large gear ring (135) is fixedly installed at the bottom of the outer wall of the rotating cylinder (10). The large gear ring (135) meshes with the small gear (134).

8. The fire-retardant performance testing equipment for the production of fire extinguishing shields according to claim 7, characterized in that, The top of the test chamber (1) is provided with a smoke exhaust assembly, and the smoke exhaust assembly includes a smoke exhaust hole (15) opened on the top of the test chamber (1). A smoke exhaust pipe (3) is fixedly installed on the top of the smoke exhaust hole (15), and a smoke exhaust fan (14) is fixedly installed on the inner wall of the smoke exhaust pipe (3).

9. The fire-retardant performance testing equipment for the production of fire extinguishing shields according to claim 1, characterized in that, The bottom four corners of the detection box (1) are all fixedly equipped with casters, and a door (8) is provided on one side of the detection box (1).

10. The fire-retardant performance testing equipment for the production of fire extinguishing shields according to claim 8, characterized in that, The detection box (1) has a control device (2) fixedly installed on the outer wall of the other end, and the control device (2) is electrically connected to the burner (4), the tension gauge (113), the forward and reverse motor (121), the stepper motor (132), and the exhaust fan (14).

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