Flame-retardant performance testing device for flame-retardant plate

Abstract

The invention belongs to the field of flame-retardant testing of flame-retardant plates, and particularly relates to a flame-retardant plate flame-retardant performance testing device which comprises a supporting frame, U-shaped plates are arranged on the left side and the right side of the upper portion of the supporting frame, the U-shaped plate located on the left side is slidably arranged on the upper portion of the supporting frame, and the U-shaped plate located on the right side is fixedly arranged on the upper portion of the supporting frame. Three connecting blocks are arranged on the inner side of the U-shaped plate, the connecting block located in the middle is fixedly arranged on the inner side of the U-shaped plate, the connecting blocks located at the upper end and the lower end are movably arranged on the inner side of the U-shaped plate, a moving mechanism is jointly arranged between the connecting blocks located at the upper end and the lower end, and rotating rods are rotationally arranged on the connecting blocks and penetrate through the connecting blocks. A positioning mechanism is arranged at the end, away from the U-shaped plate, of the rotating rod. The flame-retardant plate body is tested in multiple aspects, the flame-retardant performance of the flame-retardant plate body in the actual use state is fully simulated, and the accuracy and comprehensiveness of the test result of the flame-retardant plate body are improved.

Description

Technical Field

[0001] The invention belongs to the field of flame retardant testing of flame retardant plates, and in particular relates to a flame retardant performance testing device for flame retardant plates. Background Art

[0002] Flame retardant panels are widely used in the fields of construction, transportation, home appliances, etc., because they can effectively delay the spread of flames, which is of great significance to protecting people's lives and property. The flame retardant properties of flame retardant panels need to be verified through rigorous testing to ensure their reliability in practical applications.

[0003] At present, when the flame retardant performance test is carried out on the flame retardant board, the staff will place the flame retardant board, fix the flame spray gun on one side of the flame retardant board, and then use the flame spray gun to spray fire at the flame retardant board to carry out the flame retardant test. Although this test method can evaluate the flame retardant performance of the flame retardant board to a certain extent, its test content and results are relatively simple, and it is difficult to fully and truly reflect the flame retardant performance of the flame retardant board in actual application status, which reduces the accuracy and comprehensiveness of the evaluation of the flame retardant performance of the flame retardant board in actual application. Summary of the invention

[0004] In view of the above problems, an embodiment of the present application provides a flame retardant board flame retardant performance testing device, which can fully simulate the flame retardant performance of the flame retardant board body under actual use conditions, thereby improving the accuracy and comprehensiveness of the test results of the flame retardant board body.

[0005] In order to achieve the above-mentioned objectives, the embodiments of the present application provide the following technical solutions: The present invention provides a flame retardant performance testing device for flame retardant plates, comprising a support frame, wherein U-shaped plates are arranged on both left and right sides of the upper part of the support frame, the U-shaped plate on the left side is slidably arranged on the upper part of the support frame, and the U-shaped plate on the right side is fixedly arranged on the upper part of the support frame, and three connecting blocks are arranged on the inner side of the U-shaped plate, the connecting block in the middle is fixedly arranged on the inner side of the U-shaped plate, the connecting blocks at the upper and lower ends are movably arranged on the inner side of the U-shaped plate, and a moving mechanism is commonly arranged between the connecting blocks at the upper and lower ends, a rotating rod is rotatably arranged on the connecting block and the rotating rod passes through the connecting block, a positioning mechanism is arranged on the end of the rotating rod away from the U-shaped plate, the flame retardant plate body is placed between the two corresponding positioning mechanisms on the left and right, and a rotating mechanism for driving the rotating rod to rotate is arranged on the sides of the two U-shaped plates away from each other.

[0006] The positioning mechanism includes a positioning plate fixedly arranged at one end of the rotating rod away from the U-shaped plate. The cross-section of the positioning plate is U-shaped, and the flame retardant plate body is located between the two positioning plates. The rotating rod is located on the outer side between the positioning plate and the connecting block, and two L-shaped blocks and two sliding rings are slidably arranged in sequence. A first spring is arranged between the two sliding rings.

[0007] L-shaped plates are fixedly installed on both the front and rear sides of the U-shaped plate on the right side, an electric push rod is fixedly installed on the outer side of the L-shaped plate, an extrusion mechanism is provided at one end of the electric push rod on the front side, and a rectangular plate is fixedly installed on one end of the electric push rod on the rear side and the upper part of the support frame, and a testing mechanism is provided on the rectangular plate.

[0008] According to a favorable embodiment, the thickness of the positioning plate is smaller than the thickness of the flame retardant plate body, the vertical height of the L-shaped block close to the positioning plate is smaller than the vertical height of the L-shaped block close to the sliding ring, and the positioning mechanism also includes a fastening ring threadedly arranged on the outside of the rotating rod, and the side of the fastening ring away from the connecting block abuts against the side of the sliding ring close to the connecting block.

[0009] According to an advantageous embodiment, the moving mechanism comprises a bidirectional screw rotatably arranged inside the U-shaped plate, the bidirectional screw is threaded with two thread sleeves with opposite thread directions, and the thread sleeves are connected to one side of the corresponding connecting block.

[0010] According to a preferred embodiment, the rotating mechanism includes a protective cover fixedly arranged on the outside of the U-shaped plate, a first rectangular rod is rotatably arranged inside the protective cover, connecting rings are slidably arranged at the upper and lower ends of the outer side of the first rectangular rod, a first active bevel gear is fixedly arranged on the side where the two connecting rings are close to each other and on the middle part of the outer side of the first rectangular rod, a guide plate is rotatably arranged on the outer side of the connecting ring, a side of the guide plate away from the connecting ring movably passes through the U-shaped plate and is connected to one side of the corresponding connecting block, a first driven bevel gear is fixedly arranged on the end of the rotating rod close to the first rectangular rod, and the first active bevel gear is meshed with the first driven bevel gear, a first handle is rotatably arranged on the inner right end of the support frame, and the top end of the first handle is connected to the bottom end of the first rectangular rod located on the right side.

[0011] According to a favorable embodiment, the squeezing mechanism includes a U-shaped block fixedly arranged at one end of the front electric push rod, two cross plates are fixedly arranged at the end of the U-shaped block away from the electric push rod, and two squeezing rods symmetrically distributed between the two cross plates are arranged together.

[0012] According to a favorable embodiment, a jack is fixedly provided on the left side of the support frame, and a connecting plate is fixedly provided on the right end of the jack, the top end of the connecting plate passes through the upper part of the support frame and is connected to the bottom of the U-shaped plate on the left side, a sliding opening is opened on the left side of the upper part of the support frame, and the top end of the connecting plate passes through the sliding opening and is slidably connected to the sliding opening.

[0013] According to a favorable embodiment, a second rectangular rod is rotatably provided on the inner side of the support frame, and the right end of the second rectangular rod movably passes through the connecting plate, a rotating ring is slidably provided on the outer left end of the second rectangular rod, and the left end of the rotating ring is rotatably connected to the right side of the connecting plate, a second active bevel gear is fixedly provided on the side of the rotating ring away from the connecting plate and the outer right end of the second rectangular rod, the bottom end of the bidirectional screw penetrates into the inner side of the support frame and is fixedly provided with a second driven bevel gear, and the second active bevel gear is meshed with the second driven bevel gear, and a second handle is rotatably provided on the right side of the support frame, and the right end of the second handle is connected to the right end of the second rectangular rod.

[0014] According to an advantageous embodiment, a groove is formed on one side of the rectangular plate, and the testing mechanism comprises three mounting blocks slidably arranged inside the groove, and a flame spray gun is arranged on a side of the mounting block away from the inner wall of the groove.

[0015] According to a favorable embodiment, a movable plate is slidably arranged inside the groove, a pull plate is fixedly arranged on a side of the movable plate away from the mounting block, and an end of the pull plate away from the movable plate passes through the groove, a plurality of second springs are fixedly arranged between the movable plate and the inner wall of the groove, a plurality of protrusions distributed in a linear array are fixedly arranged on a side of the movable plate away from the second springs, and a plurality of arc-shaped openings for engaging with the protrusions are opened on a side of the mounting block close to the movable plate.

[0016] According to an advantageous embodiment, a guide groove is formed on a side of the U-shaped plate close to the protective cover, and a side of the guide plate away from the connecting ring penetrates the guide groove and is slidably connected to the guide groove.

[0017] Compared with the prior art, the flame retardant performance testing device for flame retardant panels provided by the embodiment of the present invention has the following beneficial effects:

[0018] 1. The present invention can simultaneously test the flame retardant performance of multiple flame retardant board bodies at the center position of the board surface and the side wall edge sealing position, and by applying pressure to multiple flame retardant board bodies at the same time, the flame retardant performance of the flame retardant board bodies under a stressed bending state can be tested, which not only improves the diversity of the test results of the flame retardant board bodies, but also fully simulates the flame retardant performance of the flame retardant board bodies under actual use conditions.

[0019] 2. The present invention can move and stack multiple flame-retardant board bodies in a flat state, so that the stacked flame-retardant board bodies can be subjected to a burn-through test. By simulating the superposition state of multiple flame-retardant board bodies for testing, the flame-retardant performance of the flame-retardant board bodies in actual use can be more accurately evaluated.

[0020] 3. The present invention utilizes an extrusion mechanism to simultaneously subject multiple flame retardant plate bodies to an extrusion force, and then the side of the flame retardant plate body close to the flame retardant gun can present a concave or convex state, and the concave surface or convex surface of the flame retardant plate body can be subjected to a flame retardant test, which can more specifically test the flame retardant performance of the flame retardant plate body under a stress-bending state.

[0021] 4. In the process of testing the flame retardant board body in the present invention, the positioning mechanism can be used to prevent positional displacement when multiple flame retardant board bodies are stacked, and can also prevent the flame retardant board body from detaching from between two positioning plates when squeezed, further ensuring the flame retardant test effect of the flame retardant board body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the present invention.

[0023] Figure 2 It is a cross-sectional structural diagram of the present invention.

[0024] Figure 3 for Figure 2 A magnified view of the structure in part A.

[0025] Figure 4 It is a structural diagram of the extrusion mechanism in the present invention.

[0026] Figure 5 It is a partial structural diagram of the present invention.

[0027] Figure 6 It is a cross-sectional structural diagram of the rectangular plate in the present invention.

[0028] Figure 7 It is an exploded connection structure diagram of the movable plate and the mounting block in the present invention.

[0029] Figure 8 This is a state structure diagram of the flame retardant board body during the extrusion test in the present invention.

[0030] Fig. 9 for Figure 8 A magnified view of the structure of part B.

[0031] Fig.10 This is a state structure diagram of the flame retardant board body during stacking test in the present invention.

[0032] Fig.11 Fig.10 A magnified view of the structure of part C.

[0033] Reference numerals in the figure: 1, support frame; 2, U-shaped plate; 3, connecting block; 4, moving mechanism; 401, bidirectional screw; 402, threaded sleeve; 5, rotating rod; 6, positioning mechanism; 601, positioning plate; 602, L-shaped block; 603, sliding ring; 604, first spring; 605, fastening ring; 7, flame retardant plate body; 8, rotating mechanism; 801, protective cover; 802, first rectangular rod; 803, connecting ring; 804, first active bevel gear; 805, guide plate; 9, L-shaped plate; 10, electric push rod; 11, extrusion mechanism; 1 11. U-shaped block; 112. horizontal plate; 113. extrusion rod; 12. rectangular plate; 13. testing mechanism; 131. mounting block; 132. flamethrower; 14. groove; 15. first driven bevel gear; 16. first handle; 17. jack; 18. connecting plate; 19. sliding mouth; 20. second rectangular rod; 21. rotating ring; 22. second active bevel gear; 23. second driven bevel gear; 24. second handle; 25. moving plate; 26. pulling plate; 27. second spring; 28. protrusion; 29. ​​arc-shaped mouth; 30. guide groove. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-11 This application is further described in detail.

[0035] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 5 A flame retardant performance testing device for flame retardant plates comprises a support frame 1, wherein U-shaped plates 2 are arranged on both left and right sides of the upper part of the support frame 1, the U-shaped plate 2 on the left side is slidably arranged on the upper part of the support frame 1, and the U-shaped plate 2 on the right side is fixedly arranged on the upper part of the support frame 1, and three connecting blocks 3 are arranged on the inner side of the U-shaped plate 2, the connecting block 3 in the middle is fixedly arranged on the inner side of the U-shaped plate 2, the connecting blocks 3 at the upper and lower ends are movably arranged on the inner side of the U-shaped plate 2, and a moving mechanism 4 is arranged between the connecting blocks 3 at the upper and lower ends, a rotating rod 5 is rotatably arranged on the connecting block 3 and the rotating rod 5 passes through the connecting block 3, a positioning mechanism 6 is arranged on the end of the rotating rod 5 away from the U-shaped plate 2, a flame retardant plate body 7 is placed between the two corresponding positioning mechanisms 6 on the left and right, and a rotating mechanism 8 for driving the rotating rod 5 to rotate is arranged on the side away from each other of the two U-shaped plates 2. A jack 17 is fixedly provided on the left side of the support frame 1, and a connecting plate 18 is fixedly provided on the right end of the jack 17. The top end of the connecting plate 18 passes through the upper part of the support frame 1 and is connected to the bottom of the U-shaped plate 2 on the left side. A sliding opening 19 is opened on the left side of the upper part of the support frame 1, and the top end of the connecting plate 18 passes through the sliding opening 19 and is slidably connected to the sliding opening 19.

[0036] When conducting a flame retardant test on the flame retardant board body 7, the flame retardant board body 7 can be positioned by first using the cooperation of the jack 17, the connecting plate 18 and the positioning mechanism 6, and then the use position of the flame retardant board body 7 can be changed by using the moving mechanism 4, so as to facilitate the stacking of multiple flame retardant board bodies 7 for flame retardant testing, and the flame retardant board body 7 can be driven to rotate by the rotating mechanism 8, so as to facilitate the flame retardant testing of the center position of the board surface and the side wall edge sealing position of the flame retardant board body 7.

[0037] See also Figure 1 and Figure 2 An L-shaped plate 9 is fixedly provided on both the front and rear sides of the right U-shaped plate 2, an electric push rod 10 is fixedly provided on the outer side of the L-shaped plate 9, an extrusion mechanism 11 is provided at one end of the electric push rod 10 on the front side, a rectangular plate 12 is fixedly provided on one end of the electric push rod 10 on the rear side and the upper part of the support frame 1, and a testing mechanism 13 is provided on the rectangular plate 12.

[0038] After the flame retardant plate body 7 is positioned, the flame retardant test can be performed on the flame retardant plate body 7 through the testing mechanism 13. During the test, the flame retardant plate body 7 can be bent by using the cooperation of the electric push rod 10 and the extrusion mechanism 11, so that the flame retardant performance of the flame retardant plate body 7 under the stress bending state can be tested.

[0039] See also Figure 3 The positioning mechanism 6 includes a positioning plate 601 fixedly arranged at one end of the rotating rod 5 away from the U-shaped plate 2, the cross section of the positioning plate 601 is U-shaped, and the flame retardant plate body 7 is located between the two corresponding positioning plates 601, and the rotating rod 5 is located between the positioning plate 601 and the connecting block 3. Two L-shaped blocks 602 and two sliding rings 603 are slidably arranged in sequence on the outer side, and the vertical height of the L-shaped block 602 close to the positioning plate 601 is less than the vertical height of the L-shaped block 602 close to the sliding ring 603, and a first spring 604 is arranged between the two sliding rings 603. The thickness of the positioning plate 601 is less than the thickness of the flame retardant plate body 7, and the vertical height of the L-shaped block 602 close to the positioning plate 601 is less than the vertical height of the L-shaped block 602 close to the sliding ring 603. The positioning mechanism 6 also includes a fastening ring 605 threadedly arranged on the outer side of the rotating rod 5, and the side of the fastening ring 605 away from the connecting block 3 abuts against the side of the sliding ring 603 close to the connecting block 3.

[0040] In order to make the flame retardant board body 7 more stable during the flame retardant test, when the flame retardant board body 7 is subjected to the flame retardant test, the flame retardant board body 7 is placed between the two positioning plates 601. At this time, the bottom end of the flame retardant board body 7 contacts the inner side of the corresponding L-shaped plate 9, and the flame retardant board body 7 is moved so that its right side contacts the inner side of the positioning plate 601 on the right. Then the staff uses the jack 17 to push the connecting block 3 to move to the right in the slide 19. The movement of the connecting block 3 to the right can push the U-shaped plate 2 on the left to move to the right, thereby driving the positioning plate 601 on the left to move to the right, and then the two positioning plates 601 can be used to position the flame retardant board body 7. At the same time, during the flame retardant test, the flame retardant board body 7 is located between the corresponding two L-shaped blocks 602, so that the flame retardant board is more stable during the test.

[0041] See also Figure 6 A groove 14 is formed on one side of the rectangular plate 12 . The testing mechanism 13 includes three mounting blocks 131 slidably arranged inside the groove 14 . A flamethrower 132 is arranged on one side of the mounting block 131 away from the inner wall of the groove 14 .

[0042] In order to perform a flame retardant test on the side wall edge sealing position of the flame retardant plate body 7, after the flame retardant plate body 7 is positioned between the two positioning plates 601, the flame spray gun 132 located on the rear side is started. The flame retardant test can be performed on the side wall edge sealing position of the flame retardant plate body 7 by spraying flame with the flame spray gun 132. By performing flame retardant tests on three flame retardant plate bodies 7 at the same time, the test results can be more accurate.

[0043] See also Figure 2 and Figure 3 The rotating mechanism 8 includes a protective cover 801 fixedly arranged on the outer side of the U-shaped plate 2, a first rectangular rod 802 is rotatably arranged inside the protective cover 801, connecting rings 803 are slidably arranged on the upper and lower ends of the outer side of the first rectangular rod 802, a first active bevel gear 804 is fixedly arranged on the side where the two connecting rings 803 are close to each other and on the middle part of the outer side of the first rectangular rod 802, a guide plate 805 is rotatably arranged on the outer side of the connecting ring 803, a side of the guide plate 805 away from the connecting ring 803 movably penetrates the U-shaped plate 2 and is connected to one side of the corresponding connecting block 3, a first driven bevel gear 15 is fixedly arranged on one end of the rotating rod 5 close to the first rectangular rod 802, and the first active bevel gear 804 is meshed with the first driven bevel gear 15, a first handle 16 is rotatably arranged on the inner right end of the support frame 1, and the top end of the first handle 16 is connected to the bottom end of the first rectangular rod 802 located on the right side.

[0044] In order to perform a flame retardant test on the center position of the panel surface of the flame retardant panel body 7, the staff can rotate the first handle 16 to drive the first rectangular rod 802 on the right to rotate, and the rotation of the first rectangular rod 802 on the right drives the first active bevel gear 804 on the right to rotate, and the rotation of the first active bevel gear 804 on the right can drive the first driven bevel gear 15 on the right to rotate, and the rotation of the first driven bevel gear 15 on the right drives the rotating rod 5 on the right to rotate, and the rotation of the rotating rod 5 on the right can drive the positioning plate 601 on the right to rotate. Since the flame retardant panel body 7 is positioned between the two positioning plates 601, the positioning plate 601 on the left rotates synchronously during the rotation of the positioning plate 601 on the right, so that the positioning effect of the flame retardant panel body 7 will not be affected. When the three flame retardant panel bodies 7 are rotated from a horizontal state to a vertical state, the first handle 16 is stopped. At this time, the flame retardant test can be performed on the center position of the panel surface of the flame retardant panel body 7 by using the flamethrower 132 on the rear side.

[0045] See also Figure 3 , Figure 5 , Fig.10 and Fig.11 The moving mechanism 4 includes a bidirectional screw 401 rotatably arranged on the inner side of the U-shaped plate 2, and two threaded sleeves 402 with opposite thread directions are threadedly arranged on the bidirectional screw 401, and the threaded sleeve 402 is connected to one side of the corresponding connecting block 3. A second rectangular rod 20 is rotatably arranged on the inner side of the support frame 1, and the right end of the second rectangular rod 20 movably penetrates the connecting plate 18, a rotating ring 21 is slidably arranged on the outer left end of the second rectangular rod 20, and the left end of the rotating ring 21 is rotatably connected to the right side of the connecting plate 18, and a second active bevel gear 22 is fixedly arranged on the side of the rotating ring 21 away from the connecting plate 18 and the outer right end of the second rectangular rod 20, the bottom end of the bidirectional screw 401 penetrates into the inner side of the support frame 1 and is fixedly arranged with a second driven bevel gear 23, and the second active bevel gear 22 is meshed with the second driven bevel gear 23, and a second handle 24 is rotatably arranged on the right side of the support frame 1, and the right end of the second handle 24 is connected to the right end of the second rectangular rod 20. A guide groove 30 is formed on one side of the U-shaped plate 2 close to the protective cover 801 , and a side of the guide plate 805 away from the connecting ring 803 penetrates through the guide groove 30 and is slidably connected to the guide groove 30 .

[0046] In order to be able to perform flame retardant testing on multiple flame retardant plate bodies 7 after stacking, after horizontally positioning the three flame retardant plate bodies 7 between the corresponding positioning plates 601, the staff can rotate the multiple L-shaped blocks 602 at the upper end so that the inner side of the L-shaped block 602 at the upper end contacts the upper part of the flame retardant plate body 7 at the upper end, and then rotate the multiple L-shaped blocks 602 at the middle portion so that one side of the L-shaped block 602 in the middle portion abuts against the outer side of the positioning plate 601 in the middle portion, and finally rotate the multiple L-shaped blocks 602 at the lower end so that the inner side of the L-shaped block 602 at the lower end contacts the bottom of the flame retardant plate body 7 at the lower end. At this time, the staff can rotate the second handle 24, and the rotation of the second handle 24 drives the second rectangular rod 20 to rotate, and the rotation of the second rectangular rod 20 drives the second main The active bevel gear 22 rotates, and the rotation of the second active bevel gear 22 can drive the second driven bevel gear 23 to rotate. The rotation of the second driven bevel gear 23 can drive the bidirectional screw 401 to rotate. During the rotation of the bidirectional screw 401, the cooperation of the guide plate 805 and the guide groove 30 can drive the two threaded sleeves 402 on the bidirectional screw 401 to move toward each other, thereby driving the two connecting blocks 3 located at the upper and lower ends to move toward each other, and then through the positioning plate 601, the flame retardant plate body 7 located at the upper and lower ends can be driven to approach and fit the flame retardant plate body 7 located in the middle. At this time, the three flame retardant plate bodies 7 are in a stacked state, and then the flame retardant test of the multiple flame retardant plate bodies 7 after stacking can be performed by using the flame spray gun 132 located at the lower end.

[0047] See also Figure 6 and Figure 7 A movable plate 25 is slidably arranged inside the groove 14, a pulling plate 26 is fixedly arranged on the side of the movable plate 25 away from the mounting block 131, and one end of the pulling plate 26 away from the movable plate 25 passes through the groove 14, a plurality of second springs 27 are fixedly arranged between the movable plate 25 and the inner wall of the groove 14, a plurality of protrusions 28 distributed in a linear array are fixedly arranged on the side of the movable plate 25 away from the second springs 27, and a plurality of arc-shaped openings 29 for engaging with the protrusions 28 are opened on the side of the mounting block 131 close to the movable plate 25.

[0048] In order to improve the flame retardant test efficiency of the stacked multiple flame retardant board bodies 7, after the multiple flame retardant board bodies 7 are stacked, the staff can pull the pull plate 26 at the lower end to drive the movable plate 25 at the lower end to move. The movement of the movable plate 25 at the lower end will squeeze the second spring 27 at the lower end on the one hand, and drive the protrusion 28 at the lower end to move on the other hand, so that the protrusion 28 at the lower end is away from the arc-shaped opening 29 on the lower end mounting block 131, thereby canceling the limit on the lower end mounting block 131. Then the staff can move the position The flamethrower 132 at the lower end makes the three flamethrowers 132 close to each other. After the position of the flamethrower 132 at the lower end is adjusted, the pull plate 26 is released, and the elastic force of the second spring 27 can drive the protrusion 28 to re-engage with the arc-shaped opening 29 to fix the flamethrower 132 at the lower end, so that the firepower can be concentrated to heat a certain area of ​​the stacked multiple flame-retardant plate bodies 7, so that the temperature of the area rises rapidly, and the combustion conditions required for the test are reached more quickly, thereby improving the flame retardant test efficiency of the stacked multiple flame-retardant plate bodies 7.

[0049] See also Figure 4 , Figure 8 and Fig. 9 The squeezing mechanism 11 includes a U-shaped block 111 fixedly arranged at one end of the front electric push rod 10, and two horizontal plates 112 are fixedly arranged at one end of the U-shaped block 111 away from the electric push rod 10, and two squeezing rods 113 symmetrically distributed between the two horizontal plates 112 are arranged together.

[0050] In order to test the flame retardant performance of the flame retardant plate body 7 under a stressed bending state, after the three flame retardant plate bodies 7 are rotated from a horizontal state to a vertical state, the flame retardant plate body 7 is located between the corresponding two L-shaped blocks 602, and then the fastening ring 605 can be screwed to make the connection between the L-shaped block 602 and the positioning plate 601 tighter. When the extrusion rod 113 is located on the front side of the flame retardant plate body 7, the electric push rod 10 located on the front side drives the U-shaped block 111 to move backward. The U-shaped block 111 moves backward through the cross plate 112 to drive the two extrusion rods 113 to move backward. The extrusion rod 113 moves backward and contacts the front sides of the three flame retardant plate bodies 7 and squeezes the front sides of the three flame retardant plate bodies 7. Since the flame retardant plate body 7 is located between the corresponding two L-shaped blocks 602, the front sides of the three flame retardant plate bodies 7 are concave. At this time, a flamethrower located on the rear side is used. When 132 works, the convex surface of the flame retardant plate body 7 in a concave state can be flame retardant tested. Conversely, when the extrusion rod 113 is located at the rear side of the flame retardant plate body 7, the electric push rod 10 located on the front side works to drive the U-shaped block 111 to move forward. The U-shaped block 111 moves forward through the cross plate 112 to drive the two extrusion rods 113 to move forward. The extrusion rod 113 moves forward and contacts with the rear sides of the three flame retardant plate bodies 7 and squeezes the rear sides of the three flame retardant plate bodies 7, so that the front sides of the three flame retardant plate bodies 7 are in a convex state. At this time, the electric push rod 10 located on the rear side can drive the flame retardant gun 132 located on the rear side to move. The flame retardant gun 132 located on the rear side moves to a suitable position and works, so as to carry out a flame retardant test on the concave surface of the flame retardant plate body 7 in a convex state. Then, the flame retardant performance of the flame retardant plate body 7 under a stressed bending state can be tested more specifically.

[0051] During specific work, the flame retardant plate body 7 can be placed between the corresponding two positioning plates 601, and the flame retardant plate body 7 can be positioned by using the cooperation of the positioning plate 601 and the L-shaped block 602, and then the testing mechanism 13 can be used to perform a flame retardant test on the side wall connection position of the flame retardant plate body 7. During the test, the three flame retardant plate bodies 7 can be stacked using the moving mechanism 4, and then the stacked multiple flame retardant plate bodies 7 can be flame retardant tested. During the test, the three flame retardant plate bodies 7 can be rotated from a horizontal position to a vertical position. At this time, the flame retardant test can be performed on the center position of the plate surface of the flame retardant plate body 7, and when the three flame retardant plate bodies 7 are in a vertical state, the extrusion mechanism 11 can be used to test the flame retardant performance of the flame retardant plate body 7 under a stressed bending state. By being able to perform multi-faceted tests on the flame retardant plate body 7, the flame retardant performance of the flame retardant plate body 7 under actual use is fully simulated, thereby improving the accuracy and comprehensiveness of the test results of the flame retardant plate body 7.

[0052] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A flame retardant performance testing device for flame retardant plates, comprising a support frame (1), characterized in that: The upper left and right sides of the support frame (1) are both provided with U-shaped plates (2), the U-shaped plate (2) on the left side is slidably arranged on the upper part of the support frame (1), and the U-shaped plate (2) on the right side is fixedly arranged on the upper part of the support frame (1), and three connecting blocks (3) are arranged on the inner side of the U-shaped plate (2), the connecting block (3) located in the middle is fixedly arranged on the inner side of the U-shaped plate (2), and the connecting blocks (3) located at the upper and lower ends are movably arranged on the inner side of the U-shaped plate (2), and a moving mechanism (4) is arranged between the connecting blocks (3) at the upper and lower ends, a rotating rod (5) is rotatably arranged on the connecting block (3), and the rotating rod (5) passes through the connecting block (3), a positioning mechanism (6) is arranged at one end of the rotating rod (5) away from the U-shaped plate (2), and a flame retardant plate body (7) is placed between the two corresponding positioning mechanisms (6) on the left and right, and a rotating mechanism (8) for driving the rotating rod (5) to rotate is arranged on the sides of the two U-shaped plates (2) away from each other; The positioning mechanism (6) comprises a positioning plate (601) fixedly arranged at one end of the rotating rod (5) away from the U-shaped plate (2); the cross section of the positioning plate (601) is U-shaped, and the flame retardant plate body (7) is located between the two positioning plates (601); the rotating rod (5) is located between the positioning plate (601) and the connecting block (3) and is provided with two L-shaped blocks (602) and two sliding rings (603) in sequence for sliding; a first spring (604) is provided between the two sliding rings (603); L-shaped plates (9) are fixedly arranged on both the front and rear sides of the U-shaped plate (2) on the right side, an electric push rod (10) is fixedly arranged on the outer side of the L-shaped plate (9), one end of the electric push rod (10) on the front side is provided with a squeezing mechanism (11), one end of the electric push rod (10) on the rear side and the upper part of the support frame (1) are fixedly arranged with a rectangular plate (12), and a testing mechanism (13) is provided on the rectangular plate (12).

2. A flame retardant performance testing device for flame retardant panels according to claim 1, characterized in that: The thickness of the positioning plate (601) is smaller than the thickness of the flame retardant plate body (7); the vertical height of the L-shaped block (602) close to the positioning plate (601) is smaller than the vertical height of the L-shaped block (602) close to the sliding ring (603); the positioning mechanism (6) further comprises a fastening ring (605) threadedly arranged on the outside of the rotating rod (5); and a side of the fastening ring (605) away from the connecting block (3) abuts against a side of the sliding ring (603) close to the connecting block (3).

3. The flame retardant performance testing device of a flame retardant sheet material according to claim 1, characterized in that: The moving mechanism (4) comprises a bidirectional screw (401) rotatably arranged on the inner side of the U-shaped plate (2), the bidirectional screw (401) being threadedly provided with two thread sleeves (402) with opposite thread directions, and the thread sleeves (402) being connected to one side of the corresponding connection block (3).

4. The flame retardant performance testing device of a flame retardant sheet material according to claim 1, characterized in that: The rotating mechanism (8) comprises a protective cover (801) fixedly arranged on the outside of the U-shaped plate (2); a first rectangular rod (802) is rotatably arranged inside the protective cover (801); connecting rings (803) are slidably arranged at both upper and lower ends of the outside of the first rectangular rod (802); a first active bevel gear (804) is fixedly arranged on one side where the two connecting rings (803) are close to each other and on the middle part of the outside of the first rectangular rod (802); a guide plate (805) is rotatably arranged on the outside of the connecting ring (803); and the guide plate The side (805) away from the connecting ring (803) movably penetrates the U-shaped plate (2) and is connected to one side of the corresponding connecting block (3); the end of the rotating rod (5) close to the first rectangular rod (802) is fixedly provided with a first driven bevel gear (15), and the first driving bevel gear (804) is meshed with the first driven bevel gear (15); the inner right end of the supporting frame (1) is rotatably provided with a first handle (16), and the top end of the first handle (16) is connected to the bottom end of the first rectangular rod (802) located on the right side.

5. The flame retardant performance testing device of a flame retardant sheet material according to claim 1, characterized in that: The squeezing mechanism (11) comprises a U-shaped block (111) fixedly arranged at one end of the front electric push rod (10), two transverse plates (112) fixedly arranged at one end of the U-shaped block (111) away from the electric push rod (10), and two squeezing rods (113) symmetrically distributed on the left and right are arranged between the two transverse plates (112).

6. The flame retardant performance testing device of a flame retardant sheet material according to claim 3, characterized in that: A jack (17) is fixedly arranged on the left side of the support frame (1), and a connecting plate (18) is fixedly arranged on the right end of the jack (17). The top end of the connecting plate (18) passes through the upper part of the support frame (1) and is connected to the bottom of the U-shaped plate (2) on the left side. A sliding opening (19) is opened on the left side of the upper part of the support frame (1), and the top end of the connecting plate (18) passes through the sliding opening (19) and is slidably connected to the sliding opening (19).

7. The flame retardant performance testing device of a flame retardant sheet material according to claim 6, characterized in that: A second rectangular rod (20) is rotatably arranged on the inner side of the support frame (1), and the right end of the second rectangular rod (20) movably passes through the connecting plate (18); a rotating ring (21) is slidably arranged on the outer left end of the second rectangular rod (20), and the left end of the rotating ring (21) is rotatably connected to the right side of the connecting plate (18); a second active bevel gear (22) is fixedly arranged on the side of the rotating ring (21) away from the connecting plate (18) and the outer right end of the second rectangular rod (20); the bottom end of the bidirectional screw (401) passes through the inner side of the support frame (1) and is fixedly arranged with a second driven bevel gear (23), and the second active bevel gear (22) is meshed with the second driven bevel gear (23); a second handle (24) is rotatably arranged on the right side of the support frame (1), and the right end of the second handle (24) is connected to the right end of the second rectangular rod (20).

8. The flame retardant performance testing device of a flame retardant sheet material according to claim 1, characterized in that: A groove (14) is provided on one side of the rectangular plate (12); the testing mechanism (13) comprises three mounting blocks (131) slidably arranged inside the groove (14); a flamethrower (132) is arranged on a side of the mounting block (131) away from the inner wall of the groove (14).

9. The flame retardant performance testing device of a flame retardant sheet material according to claim 8, characterized in that: A movable plate (25) is slidably arranged inside the groove (14); a pull plate (26) is fixedly arranged on a side of the movable plate (25) away from the mounting block (131); and one end of the pull plate (26) away from the movable plate (25) passes through the groove (14); a plurality of second springs (27) are fixedly arranged between the movable plate (25) and the inner wall of the groove (14); a plurality of protrusions (28) distributed in a linear array are fixedly arranged on a side of the movable plate (25) away from the second springs (27); and a plurality of arc-shaped openings (29) for engaging with the protrusions (28) are provided on a side of the mounting block (131) close to the movable plate (25).

10. The flame retardant performance testing device of a flame retardant sheet material according to claim 4, characterized in that: A guide groove (30) is provided on a side of the U-shaped plate (2) close to the protective cover (801), and a side of the guide plate (805) away from the connecting ring (803) passes through the guide groove (30) and is slidably connected to the guide groove (30).

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