A file cabinet outer box strength detection device

Abstract

The present application relates to the technical field of material strength detection, and particularly relates to a file cabinet outer box strength detection device, which comprises a detection base and a thin-walled hollow column, and both sides of the detection base are fixedly connected with inner side tables, the opposite sides of the two inner side tables are provided with anti-rebound components for avoiding secondary damage of the outer box plate, the two anti-rebound components are cooperatively used by rebound of the thin-walled hollow column, each anti-rebound component comprises a blocking component, a one-way transmission component and a reaction component, the present application realizes the first impact by the downward falling of the thin-walled hollow column and the impact head, after the impact, the rebound energy of the thin-walled hollow column and the impact head is used to drive the one-way transmission component by the reaction component, and the two sides of the protective baffle are synchronously moved to the lower side of the impact point, so that effective blocking is formed before the thin-walled hollow column falls again, the secondary damage of the plate is prevented, and the integration of the material strength detection of the outer box plate and the automatic protection of the sample is realized.

Description

Technical Field

[0001] This invention relates to the technical field of material strength testing, and in particular to a device for testing the strength of the outer casing of a filing cabinet. Background Technology

[0002] In the manufacturing process of furniture such as filing cabinets, the structural strength of the outer casing panels is one of the key indicators determining the product's durability and safety. Currently, the industry often uses impact testing to simulate the instantaneous impact that panels may be subjected to during transportation or use in order to evaluate their impact resistance. A typical test method is to lift and release an impact hammer (or heavy object) of a specific mass, allowing it to fall vertically to strike the surface of the panel under test. The strength of the panel is judged by observing its deformation, cracking, etc. After the impact hammer completes the first impact, it often bounces upward due to the material's rebound effect, and then falls again under the action of gravity. This uncontrolled secondary or even multiple impacts can cause additional damage to panels that are already damaged or nearing failure, seriously interfering with the accuracy and consistency of the test results. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides a device for testing the strength of the outer casing of a filing cabinet.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a strength testing device for the outer casing of a filing cabinet, comprising a testing base and a thin-walled hollow column. An electrically controlled transmission roller is installed inside the testing base, which is electrically driven to transport the outer casing material to be tested. A vertical beam frame is fixedly connected to the outside of the testing base. An electrically controlled take-up reel is fixedly connected to the upper end of the vertical beam frame. The interior of the vertical beam frame is open, and a thin-walled hollow column for impacting the surface of the outer casing material is installed inside the vertical beam frame. A sealing plate for closing is fixedly connected to the upper end of the thin-walled hollow column, and the sealing plate is fixed to a pull rope extending from the electrically controlled take-up reel. The thin-walled hollow column is suspended above the vertical beam frame via an electrically controlled take-up reel. The electrically controlled take-up reel uses an aluminum alloy hollow reel to reduce the resistance generated by its rotation. An upper positioning plate and a lower positioning plate are fixedly connected inside the vertical beam frame to assist the thin-walled hollow column in falling. The upper positioning plate is located at the top inside the vertical beam frame, and the lower positioning plate is located at the bottom inside the vertical beam frame. The lower end of the thin-walled hollow column moves through the upper and lower positioning plates and extends to the top of the detection platform. An impact head is fixedly connected to the lower end of the thin-walled hollow column, and the lower corner of the impact head is rounded.

[0005] The testing platform has inner platforms fixedly connected to both sides. The outer casing material to be tested is placed outside the electrically controlled drive roller and between the two inner platforms. The electrically controlled drive roller drives the outer casing material to move to the bottom of the thin-walled hollow column. Each of the two inner platforms has an anti-rebound component on its opposite side to prevent secondary damage to the outer casing material. The two anti-rebound components work together, powered by the rebound of the thin-walled hollow column. Each anti-rebound component includes a blocking component, a one-way drive component, and a reaction component. The blocking component includes an adjusting base plate, a protective baffle, a transverse slot, and an outer slot. The adjusting base plate has a side slot on its outer side, and the protective baffle is movably connected inside the side slot. The transverse slot is located outside the inner platform, and a transverse drive plate is slidably connected inside the transverse slot. The transverse drive plate is connected to the adjusting base plate... The plate is fixedly connected, and the adjusting base plate moves laterally outside the inner platform via the transverse transmission plate. The outer slot is opened above the outer side of the inner platform and is connected to the interior of the transverse slot. The outer side of the transverse transmission plate is provided with a transmission tooth groove for transmission. The interior of the side slot is rotatably connected to a sliding screw. The upper end of the sliding screw moves through the interior of the side slot and extends to the upper part of the adjusting base plate. The exterior of the sliding screw is fixedly connected to a rotating handle for easy rotation. The interior of the protective baffle is provided with a fixedly embedded nut that is threadedly connected to the sliding screw. Both sides of the interior of the side slot are fixedly connected to limit slide rods. The two limit slide rods are respectively movably sleeved on both sides of the interior of the protective baffle. The protective baffle moves stably upward or downward inside the side slot by being limited by the two limit slide rods.

[0006] As a preferred embodiment of the present invention, the unidirectional transmission assembly includes a vertical plate for positioning, a transverse transmission plate, and a rotating tooth for meshing with a transmission tooth groove, as well as a first drive ring sleeve, a second drive ring sleeve, a transmission belt, and a unidirectional transmission tooth for linkage. The vertical plate is fixedly connected to the outside of the inner platform. A first rotating roller is rotatably connected inside the vertical plate. The rotating tooth is fixedly connected to the outside of the first rotating roller. The first drive ring sleeve is fixedly connected to the end of the first rotating roller away from the rotating tooth. The rotating tooth meshes with the inside of the transmission tooth groove. The rotation of the rotating tooth drives the transmission tooth groove and causes the transverse transmission plate to move laterally inside the transverse groove. A second rotating roller is fixedly connected inside the second drive ring sleeve. The second rotating roller is rotatably connected to the outside of the lower positioning plate. A unidirectional transmission tooth is fixedly connected to the end of the second rotating roller away from the second drive ring sleeve. The transmission belt is movably sleeved outside the first drive ring sleeve and the second drive ring sleeve. The rotation of the second drive ring sleeve drives the transmission belt and causes the first drive ring sleeve to rotate synchronously.

[0007] In a preferred embodiment of the present invention, the reaction assembly includes a guide plate, which is fixedly connected to the outside of the thin-walled hollow column and does not affect the upward or downward movement of the thin-walled hollow column. A vertical slot is formed on the outside of the guide plate, and a movable connecting plate is movably connected inside the slot. Several teeth for unidirectional transmission with unidirectional transmission gears are fixedly connected to the side of the movable connecting plate away from the inside of the vertical slot. Several empty slots are formed on the outside of the movable connecting plate, and a spring is fixedly connected inside each empty slot. The end of the spring away from the inside of the empty slot is fixedly connected to the inner wall of the vertical slot. The movable connecting plate is controlled by the springs in the vertical slot... The reaction assembly also includes a handle, two pull plates, and two abutments. The handle is fixedly connected to the outside of the movable connecting plate. By holding the handle, the movable connecting plate can be moved laterally within the vertical slot. The two pull plates are fixedly connected to the upper and lower sides of the handle. Each pull plate has a limiting roller fixedly connected to the side of its exterior closest to the thin-walled hollow column. Each abutment has an opening with the same diameter as the limiting roller. The two abutments are fixedly connected to the two sides of the guide plate and correspond to the positions of the two pull plates. The limiting roller is movably inserted into the opening of the abutment and passes through the abutment.

[0008] As a preferred embodiment of the present invention, a control component for adjusting weight is provided inside the thin-walled hollow column. The control component includes a through slot, a shelf, and several counterweights. The through slot is located on both sides of the outside of the thin-walled hollow column and communicates with the inside of the thin-walled hollow column. The shelf is fixedly connected to the inside of the thin-walled hollow column and is located between two through slots. The shelf is a concave plate. The side of the counterweights near the shelf is protruding, and the side away from the shelf is recessed. The counterweights are stacked outside the shelf. The control component also includes a pin plate and several positioning slots. The positioning slots are located on the outside of the thin-walled hollow column and communicate with the inside of the thin-walled hollow column. The pin plate is inserted into the inside of the positioning slots and into the recess of the counterweight. The pin plate limits the counterweights inside the thin-walled hollow column, preventing the counterweights from detaching from the inside of the thin-walled hollow column.

[0009] Compared with the prior art, the beneficial effects that this invention can achieve are:

[0010] 1. Compared with the prior art, when performing strength testing on outer box panels, this invention achieves the initial impact through the downward falling of a thin-walled hollow column and an impact head. After the impact, the rebound energy of the thin-walled hollow column and the impact head, in conjunction with the reaction component, drives the one-way transmission component, which drives the protective baffles on both sides to move synchronously downwards from the impact point. This forms an effective barrier before the thin-walled hollow column falls again, preventing it from causing secondary damage to the panel. This achieves the integrated function of material strength testing of outer box panels and automatic protection of the sample.

[0011] 2. By setting an adjustable base plate in conjunction with a sliding screw and a protective baffle, turning the handle can drive the sliding screw to rotate. Through screw transmission, the protective baffle is stably raised and lowered along the limit slides on both sides, thereby realizing the rapid adjustment of the height of the protective baffle to adapt to the inspection and protection needs of outer box panels of different thicknesses.

[0012] 3. By setting up a handle in conjunction with a pull plate, a stop plate, and a limiting roller, the spring force drives the movable connecting plate to extend outward, pushing the limiting roller to insert into the stop plate, forming a mechanical lock to prevent it from coming out; manually pulling back the handle can retract the movable connecting plate inward, separating the teeth from the one-way transmission teeth, thereby realizing the rapid reset of the thin-walled hollow column. This structure realizes the functions of automatic locking under normal conditions and rapid unlocking and reset under manual operation.

[0013] 4. By setting up control components, the overall mass of the thin-walled hollow column can be flexibly adjusted by adding or removing counterweights, thereby achieving continuous and precise adjustment of impact energy. This design enables a single device to simulate impact loads under different weight conditions, significantly expanding the detection range and applicability. Multi-gradient strength tests can be completed without replacing the impact head, improving detection efficiency and flexibility. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the structure of the impact head after it has fallen.

[0016] Figure 3 This is a schematic diagram of the structure of the protective baffle after it has been moved according to the present invention;

[0017] Figure 4 This is a partial structural diagram of the inner platform of the present invention;

[0018] Figure 5 This is a schematic diagram of the structure of the adjustable base plate of the present invention;

[0019] Figure 6 For the present invention Figure 1 A magnified schematic diagram of the local structure at point A;

[0020] Figure 7 This is a schematic diagram of the structure of the second driving ring sleeve of the present invention;

[0021] Figure 8 This is a schematic diagram of the structure of the guide plate of the present invention;

[0022] Figure 9 This is a partial cross-sectional view of the vertical slot structure of the present invention;

[0023] Figure 10 This is a schematic diagram of the grip structure of the present invention;

[0024] Figure 11 This is a rear view schematic diagram of the grip structure of the present invention.

[0025] The components are as follows: 10. Detection base; 11. Electrically controlled transmission roller; 12. Vertical beam frame plate; 13. Upper positioning plate; 14. Lower positioning plate; 15. Thin-walled hollow column; 16. Sealing plate; 17. Electrically controlled take-up reel; 18. Inner side platform; 19. Impact head; 20. Adjusting base plate; 21. Side slot; 22. Protective baffle; 23. Sliding screw; 24. Rotating handle; 25. Limiting slide bar; 26. Horizontal transmission plate; 27. Transmission tooth groove; 28. Horizontal slot; 29. ​​Outer slot; 30. Vertical plate; 31. First rotating roller; 32. First drive ring sleeve; 33. Rotating tooth; 34. Second drive ring sleeve; 35. Transmission belt; 36. One-way transmission tooth; 37. Second rotating roller; 40. Guide plate; 41. Vertical slot; 42. Movable connecting plate; 43. Tooth; 44. Empty slot; 45. Spring; 46. Handle; 47. Pull plate; 48. Support plate; 49. Limiting insert roller; 50. Through slot; 51. Placement shelf; 52. Pin plate; 53. Positioning slot; 54. Counterweight. Detailed Implementation

[0026] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0027] Example: Figure 1 , Figure 2 and Figure 3As shown, a strength testing device for the outer casing of a filing cabinet includes a testing base 10 and a thin-walled hollow column 15. An electrically controlled transmission roller 11 is installed inside the testing base 10, which is electrically driven to transport the outer casing material to be tested. A vertical beam frame 12 is fixedly connected to the outside of the testing base 10. An electrically controlled take-up reel 17 is fixedly connected to the upper end of the vertical beam frame 12. The electrically controlled transmission roller 11 and the electrically controlled take-up reel 17 are existing known technologies and are only used to provide power, so they will not be described in detail here. The interior of the vertical beam frame 12 is open, and a thin-walled hollow column 15 for impacting the surface of the outer casing material is installed inside the vertical beam frame 12. A sealing plate 16 for closing is fixedly connected to the upper end of the thin-walled hollow column 15. The sealing plate 16 and the electrically controlled take-up reel 17 extend... The extended pull rope is fixedly connected. The thin-walled hollow column 15 is suspended above the inside of the vertical beam frame plate 12 by the electric control take-up reel 17. The electric control take-up reel 17 is made of aluminum alloy hollow wire reel to reduce the resistance generated by the rotation of the electric control take-up reel 17. The inside of the vertical beam frame plate 12 is fixedly connected to an upper positioning plate 13 and a lower positioning plate 14 for assisting the thin-walled hollow column 15 to fall. The upper positioning plate 13 is set at the upper part of the inside of the vertical beam frame plate 12, and the lower positioning plate 14 is set at the lower part of the inside of the vertical beam frame plate 12. The lower end of the thin-walled hollow column 15 moves through the upper positioning plate 13 and the lower positioning plate 14 and extends to the top of the detection base 10. The lower end of the thin-walled hollow column 15 is fixedly connected to an impact head 19. The lower corner of the impact head 19 is rounded.

[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, both sides of the detection base 10 are fixedly connected to inner platforms 18. The outer box plate to be tested is placed outside the electrically controlled transmission roller 11 and between the two inner platforms 18. The electrically controlled transmission roller 11 drives the outer box plate to move to the bottom of the thin-walled hollow column 15. The two inner platforms 18 are provided with anti-rebound components on their opposite sides to avoid secondary damage to the outer box plate. The two anti-rebound components are powered by the rebound of the thin-walled hollow column 15 and work together. Each anti-rebound component includes a blocking component, a one-way transmission component and a reaction component.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the barrier assembly includes an adjusting base plate 20, a protective baffle 22, a transverse slot 28, and an outer slot 29. The adjusting base plate 20 has a side slot 21 on its exterior. The protective baffle 22 is movably connected to the interior of the side slot 21. The transverse slot 28 is located on the exterior of the inner platform 18. A transverse transmission plate 26 is slidably connected inside the transverse slot 28. The transverse transmission plate 26 is fixedly connected to the adjusting base plate 20, allowing the adjusting base plate 20 to move laterally outside the inner platform 18 via the transverse transmission plate 26. The outer slot 29 is located above the exterior of the inner platform 18 and communicates with the interior of the transverse slot 28. The transverse transmission plate 26 has an opening on its exterior for... The transmission tooth groove 27 of the transmission has a sliding screw 23 rotatably connected inside the side groove 21. The upper end of the sliding screw 23 moves through the inside of the side groove 21 and extends to the outside of the adjusting base plate 20. A rotating handle 24 is fixedly connected to the outside of the sliding screw 23 for easy rotation. The inside of the protective baffle 22 is provided with a fixedly embedded nut that is threadedly connected to the sliding screw 23. Limiting slide rods 25 are fixedly connected to both sides inside the side groove 21. The two limiting slide rods 25 are respectively movably sleeved on both sides inside the protective baffle 22. The protective baffle 22 moves stably upward or downward inside the side groove 21 by being limited by the two limiting slide rods 25.

[0030] Rotating the handle 24 drives the sliding screw 23 to rotate inside the side slot 21. The rotation of the sliding screw 23 drives the protective baffle 22 to perform screw transmission, and cooperates with the limit slide rods 25 on both sides to assist the protective baffle 22 to move stably upward or downward, thereby achieving the effect of quickly adjusting the height of the protective baffle 22 inside the side slot 21. By controlling the height of the protective baffle 22, it can be adapted to the outer box material of different thicknesses for detection protection.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, the one-way transmission assembly includes a vertical plate 30 for positioning, a transverse transmission plate 26, and a rotating tooth 33 that meshes with the transmission tooth groove 27 for transmission, as well as a first drive ring sleeve 32, a second drive ring sleeve 34, a transmission belt 35, and a one-way transmission tooth 36 for linkage. The vertical plate 30 is fixedly connected to the outside of the inner platform 18. A first rotating roller 31 is rotatably connected inside the vertical plate 30. The rotating tooth 33 is fixedly connected to the outside of the first rotating roller 31. The first drive ring sleeve 32 is fixedly connected to the end of the first rotating roller 31 away from the rotating tooth 33. The rotating tooth 33 meshes with the transmission tooth groove 27. Inside, the rotation of the rotating tooth 33 drives the transmission tooth groove 27 and causes the transverse transmission plate 26 to move laterally inside the transverse groove 28. The second rotating roller 37 is fixedly connected inside the second driving ring sleeve 34. The second rotating roller 37 is rotatably connected to the outside of the lower positioning plate 14. The end of the second rotating roller 37 away from the second driving ring sleeve 34 is fixedly connected to a one-way transmission tooth 36. The transmission belt 35 is movably sleeved outside the first driving ring sleeve 32 and the second driving ring sleeve 34. The rotation of the second driving ring sleeve 34 drives the transmission belt 35 and causes the first driving ring sleeve 32 to rotate synchronously.

[0032] The rotation of the first drive ring sleeve 32 drives the first rotating roller 31 and causes the rotating teeth 33 to rotate synchronously. The rotating teeth 33 drive the transmission tooth groove 27 to mesh and drive the transverse transmission plate 26 to move laterally inside the transverse groove 28. At this time, the transverse transmission plate 26 drives the adjusting base plate 20 to move the protective baffle 22 laterally outside the outer box plate.

[0033] like Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 8 , Figure 9 and Figure 10As shown, the reaction assembly includes a guide plate 40, which is fixedly connected to the outside of the thin-walled hollow column 15. The guide plate 40 does not affect the upward or downward movement of the thin-walled hollow column 15. A vertical slot 41 is provided on the outside of the guide plate 40. A movable connecting plate 42 is movably connected inside the vertical slot 41. Several teeth 43 for unidirectional transmission with the unidirectional transmission gear 36 are fixedly connected to the side of the movable connecting plate 42 away from the inside of the vertical slot 41. Several empty slots 44 are provided on the outside of the movable connecting plate 42. A spring 45 is fixedly connected inside each empty slot 44. The end of the spring 45 away from the inside of the empty slot 44 is fixedly connected to the inner wall of the vertical slot 41. The movable connecting plate 42 moves inside the vertical slot 41 through the spring 45. For lateral movement, the reaction assembly also includes a handle 46, two pull plates 47, and two abutment plates 48. The handle 46 is fixedly connected to the outside of the movable connecting plate 42. By holding the handle 46, it is easy to drive the movable connecting plate 42 to move laterally within the vertical slot 41. The two pull plates 47 are fixedly connected to the upper and lower sides of the handle 46 respectively. Each pull plate 47 has a limiting roller 49 fixedly connected to the side of its exterior near the thin-walled hollow column 15. Each abutment plate 48 has an opening with the same diameter as the limiting roller 49. The two abutment plates 48 are fixedly connected to the two sides of the guide plate 40 respectively and correspond to the positions of the two pull plates 47. The limiting roller 49 is movably inserted into the opening of the abutment plate 48 and passes through the abutment plate 48.

[0034] The elastic force generated by the spring 45 drives the movable connecting plate 42 to move away from the vertical slot 41. At this time, the movable connecting plate 42 drives the handle 46 and the pull plate 47 to insert the limiting roller 49 into the back plate 48. The contact and limiting of the pull plate 47 and the back plate 48 prevent the movable connecting plate 42 from leaving the interior of the vertical slot 41. At the same time, holding the handle 46 to make it retract the movable connecting plate 42 into the interior of the vertical slot 41 can separate the tooth 43 from the one-way transmission tooth 36, thereby achieving the effect of quickly resetting the thin-walled hollow column 15.

[0035] The weight of the reaction component is optimized so as not to affect the normal falling strength of the thin-walled hollow column 15, and its weight is offset by the resistance generated by the rotation of the electronically controlled take-up reel 17.

[0036] When the thin-walled hollow column 15 falls downwards, it drives the pull rope of the electrically controlled take-up reel 17 to fall synchronously. The pull rope drives the reel inside the electrically controlled take-up reel 17 to rotate synchronously. At the same time, the thin-walled hollow column 15 and the one-way transmission gear 36 are engaged in one-way transmission. The thin-walled hollow column 15 can only provide rotational power to the one-way transmission gear 36 when it moves upwards. The collision when it moves downwards will not drive the one-way transmission gear 36 to rotate. The thin-walled hollow column 15 drives the impact head 19 to hit the outer box plate below it. After one impact, when it rebounds upwards under the force, the thin-walled hollow column 15 drives the one-way transmission gear 36 to engage in one-way transmission. The rotation of the one-way transmission gear 36 drives the second drive ring sleeve 34 and causes the transmission belt 35 to rotate, which in turn drives the first drive ring sleeve 32 to rotate synchronously. At this time, the first drive ring sleeve 32 synchronously drives the first rotating roller 31 and causes the rotating gear 33 to rotate.

[0037] See Figure 1 , Figure 2 , Figure 3 and Figure 11 As shown, the thin-walled hollow column 15 has an internal adjustment component for weight adjustment. The adjustment component includes a through slot 50, a shelf 51, and several counterweights 54. The through slots 50 are located on both sides of the outside of the thin-walled hollow column 15 and communicate with the inside of the thin-walled hollow column 15. The shelf 51 is fixedly connected to the inside of the thin-walled hollow column 15 and is located between two through slots 50. The shelf 51 is a concave plate. The counterweights 54 protrude on the side near the shelf 51 and are further away from the shelf. One side of the plate 51 is recessed, and the counterweight 54 is stacked outside the plate 51. The control assembly also includes a pin plate 52 and several positioning slots 53. The several positioning slots 53 are opened on the outside of the thin-walled hollow column 15 and communicate with the inside of the thin-walled hollow column 15. The pin plate 52 is inserted into the inside of the positioning slots 53 and inserted into the recess of the counterweight 54. The pin plate 52 limits the counterweight 54 inside the thin-walled hollow column 15 to prevent the counterweight 54 from leaving the inside of the thin-walled hollow column 15.

[0038] By adding a counterweight 54 inside the thin-walled hollow column 15, the weight of the thin-walled hollow column 15 is increased by the counterweight 54, and the impact strength test of the outer box plate under different weights is simulated by increasing the weight of the thin-walled hollow column 15.

[0039] Before use: Rotate the handle 24 to drive the sliding screw 23 to rotate inside the side slot 21. The rotation of the sliding screw 23 drives the protective baffle 22 to perform screw transmission, and cooperates with the limit slide rods 25 on both sides to assist the protective baffle 22 to move closer to the outer box plate. After the protective baffle 22 is adjusted to the position above the outer box plate, the test is performed.

[0040] In use: When testing the strength of the outer casing panels, the thin-walled hollow column 15 drives the impact head 19 to fall freely and impact the outer casing panels below it. After one impact, the thin-walled hollow column 15, under the force, causes the impact head 19 to rebound upwards. The thin-walled hollow column 15 drives the one-way transmission gear 36 to engage in one-way transmission. The rotation of the one-way transmission gear 36 drives the second drive ring sleeve 34 and causes the transmission belt 35 to rotate, which in turn drives the first drive ring sleeve 32 to rotate synchronously. At this time, the first drive ring sleeve 32 synchronously drives the first rotating roller 31 and causes the rotating gear 33 to rotate. The rotating gear 33 drives the transmission gear groove 27 to mesh and drive the transverse transmission plate 26 to move towards the impact head 19 inside the transverse groove 28. At this time, the transverse transmission plate 26 drives the adjusting base plate 20 and the protective baffle 22 to move below the impact head 19. The two anti-rebound components are simultaneously subjected to the power generated by the rebound of the thin-walled hollow column 15. The protective baffles 22 in the two anti-rebound components approach each other and move to the bottom of the impact head 19 to block the impact head 19, thereby avoiding the problem of secondary damage to the outer shell plate caused by the rebound of the thin-walled hollow column 15 and the impact head 19.

[0041] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A strength testing device for the outer casing of a filing cabinet, comprising a testing base (10), an electrically controlled transmission roller (11) disposed inside the testing base (10), a vertical beam frame plate (12) fixedly connected to the outside of the testing base (10), and an electrically controlled take-up reel (17) fixedly connected to the upper end of the outside of the vertical beam frame plate (12), characterized in that, The vertical beam frame plate (12) is provided with a thin-walled hollow column (15) for impacting the surface of the outer box plate. The upper end of the thin-walled hollow column (15) is fixedly connected to a sealing plate (16) for sealing. The upper positioning plate (13) and the lower positioning plate (14) are fixedly connected inside the vertical beam frame plate (12). The lower end of the thin-walled hollow column (15) is fixedly connected to an impact head (19). The two sides inside the testing base (10) are fixedly connected to the inner platform (18), and the two inner platforms (18) are provided with anti-rebound components on the opposite side to avoid secondary damage to the outer box plate. Each anti-rebound component includes a blocking component, a one-way transmission component, and a reaction component; The barrier assembly includes an adjusting base plate (20), a protective baffle (22), a transverse slot (28) and an outer slot (29). The transverse slot (28) is slidably connected to a transverse transmission plate (26), and the transverse transmission plate (26) is provided with a transmission tooth groove (27) for transmission on its outer side. The transverse slot (28) is opened on the outside of the inner platform (18), the transverse transmission plate (26) is fixedly connected to the adjusting base plate (20), and the outer slot (29) is opened on the outside of the inner platform (18) and is connected to the inside of the transverse slot (28). The adjustment base plate (20) has a side slot (21) on its outside. The protective baffle (22) is movably connected inside the side slot (21). The side slot (21) is rotatably connected to a sliding screw (23). The upper end of the sliding screw (23) moves through the inside of the side slot (21) and extends to the outside of the adjustment base plate (20). The sliding screw (23) is fixedly connected to a rotating handle (24) for easy rotation. The protective baffle (22) has a fixedly embedded nut that is threadedly connected to the sliding screw (23). The one-way transmission assembly includes a vertical plate (30), a horizontal transmission plate (26), a rotating tooth (33), and a first drive ring sleeve (32), a second drive ring sleeve (34), a transmission belt (35), and a one-way transmission tooth (36) for linkage. The upright plate (30) is fixedly connected to the outside of the inner platform (18). The first rotating roller (31) is rotatably connected inside the upright plate (30). The rotating tooth (33) is fixedly connected to the outside of the first rotating roller (31). The first drive ring sleeve (32) is fixedly connected to the outside of the first rotating roller (31) away from the rotating tooth (33). The rotating tooth (33) is meshed with the inside of the transmission tooth groove (27). The rotation of the rotating tooth (33) drives the transmission tooth groove (27) and causes the transverse transmission plate (26) to move laterally inside the transverse groove (28). The second drive ring sleeve (34) is fixedly connected to the inside of the second rotating roller (37), which is rotatably connected to the outside of the lower positioning plate (14). The end of the second rotating roller (37) away from the second drive ring sleeve (34) is fixedly connected to a one-way transmission tooth (36). The transmission belt (35) is movably sleeved on the outside of the first drive ring sleeve (32) and the second drive ring sleeve (34). The rotation of the second drive ring sleeve (34) drives the transmission belt (35) and makes the first drive ring sleeve (32) rotate synchronously. The reaction assembly includes a guide plate (40), which is fixedly connected to the outside of the thin-walled hollow column (15). A vertical slot (41) is opened on the outside of the guide plate (40), and a movable connecting plate (42) is movably connected inside the vertical slot (41). Several teeth (43) that are linked with the one-way transmission teeth (36) are fixedly connected on the side of the movable connecting plate (42) away from the inside of the vertical slot (41).

2. The strength testing device for the outer casing of a filing cabinet according to claim 1, characterized in that, Both sides of the side slot (21) are fixedly connected to limiting slide rods (25). The two limiting slide rods (25) are respectively movably sleeved on both sides of the protective baffle (22). The protective baffle (22) moves stably upward or downward inside the side slot (21) by being limited by the two limiting slide rods (25).

3. The strength testing device for the outer casing of a filing cabinet according to claim 1, characterized in that, The movable connecting plate (42) has several slots (44) on its outside. Each slot (44) is fixedly connected to a spring (45). One end of the spring (45) away from the inside of the slot (44) is fixedly connected to the inner wall of the vertical slot (41). The movable connecting plate (42) moves laterally inside the vertical slot (41) through the spring (45).

4. The strength testing device for the outer casing of a filing cabinet according to claim 1, characterized in that, The reaction assembly also includes a handle (46), two pull plates (47) and two abutments (48). The handle (46) is fixedly connected to the outside of the movable connecting plate (42). By holding the handle (46), the movable connecting plate (42) can be moved laterally within the vertical slot (41). The two pull plates (47) are fixedly connected to the upper and lower sides of the handle (46). Each pull plate (47) has a limiting roller (49) fixedly connected to the side of the thin-walled hollow column (15) on its outside. Each abutment (48) has an opening with the same diameter as the limiting roller (49) on its outside. The two abutments (48) are fixedly connected to the two sides of the guide plate (40) on its outside and correspond to the positions of the two pull plates (47). The limiting roller (49) is movably inserted into the opening of the abutment (48) and passes through the abutment (48).

5. The strength testing device for the outer casing of a filing cabinet according to claim 1, characterized in that, The thin-walled hollow column (15) is provided with a control component for adjusting the weight. The control component includes a through slot (50), a placement plate (51) and several counterweights (54). The through slot (50) is opened on both sides of the outside of the thin-walled hollow column (15) and communicates with the inside of the thin-walled hollow column (15). The placement plate (51) is fixedly connected to the inside of the thin-walled hollow column (15) and is located between the two through slots (50). The placement plate (51) is a concave plate. The counterweights (54) are raised on the side close to the placement plate (51) and recessed on the side away from the placement plate (51). The counterweights (54) are stacked on the outside of the placement plate (51). The control component also includes a pin plate (52) and several positioning slots (53). The several positioning slots (53) are opened on the outside of the thin-walled hollow column (15) and communicate with the inside of the thin-walled hollow column (15). The pin plate (52) is inserted into the inside of the positioning slot (53) and inserted into the recess of the counterweight (54). The pin plate (52) limits the counterweight (54) inside the thin-walled hollow column (15).

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