A dry powder extinguishing agent drop test machine

Abstract

The application provides a dry powder extinguishing agent drop test machine, which comprises a rack, a plurality of test devices and a lifting device. The plurality of test devices are arranged longitudinally on the rack, and each test device is provided with a clamping mechanism which can be vertically moved and used for clamping a test cup. The lifting device can lift the clamping mechanism upward by a distance. According to the application, a plurality of test devices are arranged longitudinally, one lifting device is used to lift the clamping mechanisms in different test devices by a small distance at the same time, and then the clamping mechanisms are moved downward under the gravity to complete the drop test, so that the efficiency is improved and the time waste is reduced.

Description

Technical Field

[0001] This invention relates to the field of fire protection equipment technology, specifically to a drop test machine for dry powder fire extinguishing agents. Background Technology

[0002] According to the GB4066-2017 standard, the dry powder extinguishing agent in a dry powder fire extinguisher needs to meet insulation requirements. Therefore, an insulation test is required for the dry powder agent. The test is roughly as follows: electrodes are inserted into both sides of an insulated test cup. The test cup is then filled with a dry powder extinguishing agent sample and placed on a drop tester. The sample is clamped and dropped hundreds of times at a certain frequency and height. Finally, a withstand voltage tester is used to apply voltage to the electrodes. The voltage is rapidly and uniformly increased until breakdown occurs, and the breakdown voltage value is recorded.

[0003] In the existing technology, the drop test of a test cup containing dry powder fire extinguishing agent usually involves lifting a single test cup before dropping it, which is inefficient and time-consuming. Furthermore, random inspection of products from the same production line usually requires testing multiple dry powder fire extinguishing agent samples, which further exacerbates this situation. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a dry powder fire extinguishing agent drop test machine to improve efficiency and reduce wasted time.

[0005] This invention provides a drop test machine for dry powder fire extinguishing agents, comprising:

[0006] frame;

[0007] Multiple testing devices are arranged longitudinally on the frame, each device containing a vertically movable clamping mechanism for holding the test cup; and

[0008] The lifting device can lift the clamping mechanism upwards a certain distance.

[0009] Preferably, the lifting device includes: a first sprocket rotatably mounted on the frame; a second sprocket rotatably mounted on the frame; a chain connected to both the first and second sprockets; a motor mounted on the frame and coaxially connected to the first sprocket; and a lifting mechanism having multiple components on the chain for lifting the clamping mechanism.

[0010] Preferably, the testing device further includes: a bottom mounting component disposed on the frame; a top mounting component disposed on the frame; two first tubes arranged parallel to each other, located on both sides of the clamping mechanism, with their lower ends rotatably connected to the bottom mounting component; two first rods arranged parallel to each other, with their lower ends slidably inserted into the upper end of the first tube on the same side, and their upper ends rotatably connected to a rotating component; and a clutch mechanism for supporting the clamping mechanism, which can slide along the length direction of the first tube; the rotating component is slidably connected to the top mounting component and can remain stationary on the top mounting component, and the clamping mechanism is vertically slidably mounted on the bottom mounting component.

[0011] Preferably, the clamping mechanism includes a first clamping plate that slides vertically on the bottom mounting member, and the clutch mechanism includes: two support rods that slide laterally at both ends of the first clamping plate and are slidably connected to the first tube along its center line via guide rails; and a clutch element that is connected at both ends to the support rods on both sides respectively.

[0012] Preferably, the clamping mechanism further includes: two first guide plates, each with its lower end connected to the first clamping plate; a second clamping plate, connected to the upper ends of the two first guide plates; and a cup-holding plate, with both ends slidably engaged with the two first guide plates, and cup-holding holes provided thereon.

[0013] Preferably, the cup-holding plate can remain stationary between the first clamping plate and the second clamping plate; the clutch mechanism further includes: two limiting blocks, each connected to the ends of the two support rods; and two first springs, each sleeved on the two support rods; the two ends of the clutch member are slidably sleeved on the two support rods through openings; the two ends of the first spring abut against the limiting blocks and the clutch member respectively; the cup-holding plate can abut against the clutch member.

[0014] Preferably, the clamping mechanism further includes two second guide plates located between the two first guide plates. The two second guide plates are respectively connected to both ends of the cup-holding plate. The second guide plates are slidably connected to and parallel to the first guide plates on the same side. A limiting pin that can slide longitudinally is provided on the side of the second guide plate facing the first guide plate. A limiting groove that is connected end to end is opened on the side of the first guide plate facing the second guide plate. The end of the limiting pin is inserted into the limiting groove on the same side with a gap. The limiting groove includes a first groove segment, a second groove segment, and a third groove segment that are connected in sequence and whose depth gradually decreases. The fourth and third slots are connected, with the end of the fourth slot away from the third slot connected to the first slot. The depth of the end of the second slot connected to the first slot is greater than the depth of the first slot at that point. The depth of the end of the third slot connected to the second slot is greater than the depth of the second slot at that point. The depth of the end of the fourth slot connected to the third slot is greater than the depth of the third slot at that point. The depth of the end of the first slot connected to the fourth slot is greater than the depth of the fourth slot at that point. The first and fourth slots, as well as the second and third slots, are all V-shaped, and their openings all face the lifting device.

[0015] Preferably, the top mounting component has a first hole; the test device further includes: a connecting rod, both ends of which are connected to the rotating component on the same side, and a second hole is provided in the middle; and an operating rod, which passes through the first hole and is threaded to the second hole, and is connected to the first hole through a bearing.

[0016] Preferably, the lifting mechanism includes: a middle plate connected to a chain; a top plate connected to the upper end of the middle plate; a bottom plate connected to the lower end of the middle plate; a buffer shaft connected at both ends to the top plate and the bottom plate respectively, and arranged longitudinally; a lifting member slidably sleeved on the buffer shaft through an opening; and a second spring sleeved on the buffer shaft, with both ends abutting against the bottom plate and the lifting member respectively.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In this invention, by setting up multiple test devices along the longitudinal direction, a lifting device is used to simultaneously lift the clamping mechanisms in different test devices by a small distance, and then the clamping mechanisms are allowed to move downward under gravity to complete the drop test, which improves efficiency and reduces time waste. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0020] Figure 1 This is a perspective view of a dry powder fire extinguishing agent drop tester according to an embodiment of the present invention;

[0021] Figure 2 for Figure 1 An internal three-dimensional view of a drop test machine for dry powder fire extinguishing agents;

[0022] Figure 3 for Figure 2 A three-dimensional view of the experimental setup;

[0023] Figure 4 for Figure 3 Another 3D image;

[0024] Figure 5 for Figure 3 Another 3D image;

[0025] Figure 6 for Figure 3 A three-dimensional view of the first guide plate;

[0026] Figure 7 for Figure 2 A three-dimensional diagram of the lifting mechanism.

[0027] Figure label:

[0028] 10. Rack;

[0029] 20. Test apparatus; 201. Bottom mounting component; 202. Top mounting component; 203. First tube; 204. First rod; 205. Rotating component; 21. Clamping mechanism; 211. First clamping plate; 212. Second clamping plate; 213. First guide plate; 214. Cup plate; 215. Second guide plate; 216. Limiting groove; 2161. First groove segment; 2162. Second groove segment; 2163. Third groove segment; 2164. Fourth groove segment; 217. Limiting pin; 22. Clutch mechanism; 221. Support rod; 222. Clutch component; 223. Limiting block; 224. First spring; 23. Connecting rod; 24. Operating rod;

[0030] 30. Lifting device; 31. First sprocket; 32. Second sprocket; 33. Chain; 34. Motor; 35. Lifting mechanism; 351. Middle plate; 352. Top plate; 353. Bottom plate; 354. Buffer shaft; 355. Lifting component; 356. Second spring. Detailed Implementation

[0031] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0032] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by those skilled in the art to which this invention pertains.

[0033] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0034] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly defined.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] See Figures 1 to 7 This embodiment provides a dry powder fire extinguishing agent drop test machine, including a frame 10, multiple test devices 20 and a lifting device 30.

[0038] Multiple testing devices 20 are arranged longitudinally on the frame 10, and each testing device 20 is equipped with a clamping mechanism 21 that can move vertically to hold the test cup. A lifting device 30 can lift the clamping mechanism 21 upwards a certain distance.

[0039] This testing machine has the following advantages:

[0040] 1. Multiple test cups are clamped onto different clamping mechanisms 21, thereby conducting drop tests on multiple dry powder extinguishing agent samples simultaneously, which improves efficiency.

[0041] 2. After the lifting device 30 raises the clamping mechanism 21 to a certain height, it disengages from it. The clamping mechanism 21 then falls downwards under gravity. The time taken for the clamping mechanism 21 to travel these two distances is different. By changing the speed of the lifting device 30 when raising the clamping mechanism 21 and altering the time of disengagement from the clamping mechanism 21, the speed of the clamping mechanism 21 during the lifting process can be changed, thereby achieving better experimental results, as detailed below:

[0042] The drop test essentially compacts the dry powder extinguishing agent inside the test cup to a certain density by dropping it. When the clamping mechanism 21 moves downward, it is mainly affected by gravity, and its downward acceleration is mainly due to gravity. For example, if the clamping mechanism 21 needs to fall 15mm at a frequency of 1Hz, the falling time is relatively short, and more time is used for the speed change when the clamping mechanism 21 is lifted. When the clamping mechanism 21 is lifted, the speed goes through a slow-fast-slow change. The lifting device 30 first contacts the clamping mechanism 21 at a low speed to avoid scattering the dry powder extinguishing agent in the test cup, and then drives the clamping mechanism 21 to rise quickly and then detaches from it. After the clamping mechanism 21 is detached from the lifting device 30, it moves upward slowly for a certain distance and then stops moving upward. At this time, the test cup and the dry powder extinguishing agent inside it begin to fall freely. The initial velocity of the dry powder extinguishing agent in the test cup when it falls is 0. In contrast, in the prior art, the falling device is driven by the motor 34. Most of the time, the test cup is pulled down quickly when it moves to the highest point, and the dry powder extinguishing agent in the test cup also has an upward impulse, which affects the test results. In addition, the time when the lifting device 30 disengages from the clamping mechanism 21 can be controlled, thereby controlling the drop distance.

[0043] In one embodiment, the lifting device 30 includes a first sprocket 31, a second sprocket 32, a chain 33, a motor 34, and a lifting mechanism 35.

[0044] The first sprocket 31 and the second sprocket 32 ​​are rotatably mounted on the frame 10. The chain 33 is connected to both the first sprocket 31 and the second sprocket 32. The first sprocket 31 is located below the second sprocket 32, and both sprockets 31 and 32 are located on the same side of the clamping mechanism 21. The motor 34 is mounted on the frame 10 and coaxially connected to the first sprocket 31. Multiple lifting mechanisms 35 are provided on the chain 33 (only two are shown in the figure), and these lifting mechanisms 35 can lift the clamping mechanism 21.

[0045] In this embodiment, the motor 34 drives the chain 33 to move. After the lifting mechanism 35 moves with the chain 33, it contacts the clamping mechanism 21 and lifts it, and then disengages from the clamping mechanism 21. Multiple clamping mechanisms 21 are provided, and each lifting mechanism 35 can contact the corresponding clamping mechanism 21 and lift it at the same time.

[0046] In one embodiment, the test apparatus 20 further includes a bottom mounting member 201, a top mounting member 202, a first tube 203, a first rod 204, and a clutch mechanism 22.

[0047] The bottom mounting bracket 201 is mounted on the rack 10. The top mounting bracket 202 is mounted on the rack 10.

[0048] Two first tubes 203 are arranged parallel to each other, located on both sides of the clamping mechanism 21. The lower ends of the first tubes 203 are rotatably connected to the bottom mounting member 201. Two first rods 204 are arranged parallel to each other. The lower ends of the first rods 204 slide into the upper ends of the first tubes 203 on the same side, and the upper ends are rotatably connected to rotating members 205. The clutch mechanism 22 is used to support the clamping mechanism 21 and can slide along the length of the first tubes 203. The rotating member 205 is slidably connected to the top mounting member 202 and can remain stationary on the top mounting member 202. The clamping mechanism 21 is vertically slidably mounted on the bottom mounting member 201. Specifically, four vertical guide rods are provided on the bottom mounting member 201, and the clamping mechanism 21 slides along the four guide rods.

[0049] In this embodiment, the clamping mechanism 21 is located on one side of the chain 33, and the lifting mechanism 35 on that side moves upward with the chain 33. After the upper end of the first rod 204 slides with the rotating member 205, the first tube 203 and the first rod 204 tilt. By adjusting the sliding distance of the upper end of the first rod 204, the tilt angle of the first tube 203 and the first rod 204 can be controlled, and the height at which the clamping mechanism 21 is lifted can be controlled.

[0050] The clutch mechanism 22 slides along the length (centerline) of the first tube 203, moving closer to or further away from the lifting mechanism 35. Specifically, when the clutch mechanism 22 slides upward along the first tube 203, it moves away from the lifting mechanism 35 on the chain 33, and vice versa. When the clutch mechanism 22 slides downward along the first tube 203 to approach and contact the lifting mechanism 35, it is lifted by the lifting mechanism 35. The clamping mechanism 21 is also lifted along with the clutch mechanism 22. As the lifting mechanism 35 lifts the clutch mechanism 22, the clutch mechanism 22 slides along the first tube 203, moving away from the lifting mechanism 35. The clutch mechanism 22 disengages from the lifting mechanism 35. At this time, the clamping mechanism 21 moves downward along with the clutch mechanism 22. Since the clamping mechanism 21 is vertically slidably mounted on the bottom mounting piece 201, there is no lateral displacement. The clutch mechanism 22 and the clamping mechanism 21 have a lateral relative displacement.

[0051] In one embodiment, the clamping mechanism 21 includes a first clamping plate 211 that slides vertically on the bottom mounting member 201, and the clutch mechanism 22 includes two support rods 221 and a clutch member 222.

[0052] Two support rods 221 are laterally slidably disposed at both ends of the first clamping plate 211. Specifically, each end of the first clamping plate 211 has a laterally arranged sliding groove, and the two support rods 221 slide in cooperation with the sliding grooves on the same side. The support rods 221 are slidably connected to the first tube 203 along its centerline via guide rails. Both ends of the clutch 222 are connected to the support rods 221 on both sides. Specifically, the first tube 203 is provided with a guide rail bearing, and the support rods 221 are provided with guide rail moving parts. The two support rods 221 can also be connected together by a connecting plate.

[0053] In this embodiment, the support rod 221 slides both on the first clamping plate 211 and on the first tube 203. When the support rod 221 slides downward on the first tube 203, the clutch 222 approaches and contacts the lifting mechanism 35 on the chain 33, thereby lifting itself and the first clamping plate 211, and the test cup on the first clamping plate 211 is also lifted. As the support rod 221 is lifted, it slides along the first tube 203, and after moving away from it, it finally disengages from the lifting mechanism 35, and the first clamping plate 211 slides vertically downward.

[0054] In one embodiment, the clamping mechanism 21 further includes two first guide plates 213, a second clamping plate 212, and a cup-holding plate 214.

[0055] Two first guide plates 213 are arranged opposite each other, with the lower end of the first guide plate 213 connected to the first clamping plate 211. The second clamping plate 212 is connected to the upper ends of the two first guide plates 213. The two ends of the cup-holding plate 214 are slidably engaged with the two first guide plates 213, and cup-holding holes are provided on it.

[0056] In this embodiment, the test cup is placed in the cup-holding hole of the cup-holding plate 214 and pushed between the first clamping plate 211 and the second clamping plate 212. The second clamping plate 212 is made of an elastic material, such as rubber. When the test cup enters between the first clamping plate 211 and the second clamping plate 212, the upper end of the test cup is pressed against the second clamping plate 212, thereby fixing the test cup.

[0057] In one embodiment, the cup plate 214 may remain stationary between the first clamping plate 211 and the second clamping plate 212.

[0058] The clutch mechanism 22 also includes a limit block 223 and a first spring 224.

[0059] Two limiting blocks 223 are provided, and the two limiting blocks 223 are respectively connected to the ends of the two support rods 221; two first springs 224 are provided, and the two first springs 224 are respectively sleeved on the two support rods 221. The two ends of the clutch 222 are slidably sleeved on the two support rods 221 through openings. The two ends of the first springs 224 abut against the limiting blocks 223 and the clutch 222 respectively. The cup plate 214 can abut against the clutch 222.

[0060] In this embodiment, the cup plate 214 is inserted between the first clamping plate 211 and the second clamping plate 212, and abuts against the clutch 222, thereby pushing the end of the clutch 222 to move above the lifting mechanism 35 on the chain 33, waiting to be lifted by the lifting mechanism 35. At this time, the cup plate 214 can remain stationary. After the test is completed and the cup plate 214 is removed, the clutch 222 moves away from the chain 33 under the action of the first spring 224 and no longer contacts the lifting mechanism 35.

[0061] In one embodiment, the clamping mechanism 21 further includes two second guide plates 215 located between the two first guide plates 213. The two second guide plates 215 are respectively connected to both ends of the cup-holding plate 214. The second guide plates 215 are slidably connected to the first guide plates 213 on the same side and remain parallel. A limiting pin 217 that can slide longitudinally is provided on the side of the second guide plate 215 facing the first guide plate 213. A limiting groove 216 is provided on the side of the first guide plate 213 facing the second guide plate 215. The end of the limiting pin 217 is inserted into the limiting groove 216 on the same side. The limiting groove 216 includes first groove segments 216 that are connected sequentially and whose depth gradually decreases. 1. The second groove segment 2162, the third groove segment 2163, and the fourth groove segment 2164. The end of the fourth groove segment 2164 away from the third groove segment 2163 is connected to the first groove segment 2161. The depth of the end of the second groove segment 2162 connected to the first groove segment 2161 is greater than the depth of the first groove segment 2161 at that point. The depth of the end of the third groove segment 2163 connected to the second groove segment 2162 is greater than the depth of the second groove segment 2162 at that point. The depth of the end of the fourth groove segment 2164 connected to the third groove segment 2163 is greater than the depth of the third groove segment 2163 at that point. The depth of the end of the first groove segment 2161 connected to the fourth groove segment 2164 is greater than the depth of the fourth groove segment 2164 at that point. The first groove segment 2161 and the fourth groove segment 2164, the second groove segment 2162 and the third groove segment 2163 are all V-shaped, and their openings all face the lifting device 30.

[0062] In this embodiment, the cup plate 214 is manually pushed to move, and the limiting pin 217 moves along with it. When the limiting pin 217 moves from the first groove segment 2161 to the second groove segment 2162, the cup plate 214 abuts against the clutch 222, compressing the first spring 224. After the cup plate 214 is released, under the action of the first spring 224, the limiting pin 217 slides from the lower end to the upper end of the second groove segment 2162 and then to the lower end of the third groove segment 2163. After the drop test is completed, the cup plate 214 is pushed forward again, and the limiting pin 217 slides to the upper end of the third groove segment 2163 and then enters the fourth groove segment 2164. Then, the hand is released, and the cup plate 214 is ejected by the first spring 224. The limiting pin 217 slides along the fourth groove segment 2164 back to the first groove segment 2161. Figure 6 In the middle, the depth of the lower end of the second groove segment 2162 is greater than the depth of the right end of the first groove segment 2161, and the third groove segment 2163 is also set in the same way as the second groove segment 2162, so that the limit pin 217 can only slide in one direction.

[0063] In one embodiment, the top mounting member 202 has a first hole; the test device 20 also includes a connecting rod 23 and an operating rod 24.

[0064] Both ends of the connecting rod 23 are connected to the rotating part 205 on the same side, and a second hole is opened in the middle. The operating rod 24 passes through the first hole and is threaded to the second hole, and is connected to the first hole through a bearing.

[0065] In this embodiment, rotating the operating lever 24 causes the two rotating parts 205 to slide on the top mounting part 202, thereby causing the rotating parts 205 to move away from or closer to the lifting device 30.

[0066] In one embodiment, the lifting mechanism 35 includes a middle plate 351, a top plate 352, a bottom plate 353, a buffer shaft 354, a lifting member 355, and a second spring 356.

[0067] The middle plate 351 is connected to the chain 33, the top plate 352 is connected to the upper end of the middle plate 351, and the bottom plate 353 is connected to the lower end of the middle plate 351. The two ends of the buffer shaft 354 are connected to the top plate 352 and the bottom plate 353 respectively, and the buffer shaft 354 is arranged longitudinally. The lifting member 355 is slidably sleeved on the buffer shaft 354 through an opening, and the second spring 356 is sleeved on the buffer shaft 354. The two ends of the second spring 356 abut against the bottom plate 353 and the lifting member 355 respectively.

[0068] In this embodiment, the lifting member 355 can contact and lift the clutch member 222. To reduce the impact of the lifting member 355 on the clutch member 222, a second spring 356 is provided, thereby reducing the impact on the dry powder extinguishing agent sample in the test cup. Numerous specific details are described in this specification. However, it will be understood that embodiments of the invention can be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A dry powder extinguishant drop test machine characterised in that, The utility model relates to a test device lifting mechanism, including: A rack (10); A plurality of test devices (20) are longitudinally arranged on the rack (10), and a clamping mechanism (21) for clamping a test cup is arranged in each test device (20) and can be vertically moved; And A lifting device (30) can lift the clamping mechanism (21) by a distance; The lifting device (30) comprises: A first sprocket (31) is rotatably arranged on the rack (10); A second sprocket (32) is rotatably arranged on the rack (10); A chain (33) is connected with the first sprocket (31) and the second sprocket (32); A motor (34) is coaxially connected with the first sprocket (31) and is arranged on the rack (10); And A plurality of lifting mechanisms (35) are arranged on the chain (33) and can lift the clamping mechanism (21); The test device (20) further comprises: A bottom mounting part (201) is arranged on the rack (10); A top mounting part (202) is arranged on the rack (10); Two first pipes (203) are arranged in parallel, are located on both sides of the clamping mechanism (21), and lower ends are rotatably connected with the bottom mounting part (201); Two first rods (204) are arranged in parallel, lower ends are slidably inserted into upper ends of the same side first pipe (203), and upper ends are rotatably connected with rotating parts (205); And A clutch mechanism (22) is used for supporting the clamping mechanism (21) and can slide along the length direction of the first pipe (203); The rotating part (205) is slidably connected with the top mounting part (202) and can be kept unmoved on the top mounting part (202), and the clamping mechanism (21) is vertically slidably arranged on the bottom mounting part (201).

2. A dry powder extinguishant drop test machine as claimed in claim 1 wherein, The clamping mechanism (21) comprises a first clamping plate (211) which is vertically slidably arranged on the bottom mounting part (201), and the clutch mechanism (22) comprises: Two support rods (221) are arranged, are transversely slidably arranged at two ends of the first clamping plate (211), and are slidably connected with the first pipe (203) along the center line thereof through guide rails; And Clutch parts (222) are connected with the support rods (221) on both sides at two ends.

3. A dry powder extinguishant drop test machine as claimed in claim 2, wherein, The clamping mechanism (21) further comprises: Two first guide plates (213) are oppositely arranged, and lower ends are connected with the first clamping plate (211); A second clamping plate (212) is connected with upper ends of the two first guide plates (213); And A cup placing plate (214) is slidably connected with the two first guide plates (213) at two ends, and a cup placing hole is formed in the cup placing plate (214).

4. A dry powder extinguishant drop test machine as claimed in claim 3, wherein, The cup placing plate (214) can be kept unmoved between the first clamping plate (211) and the second clamping plate (212); The clutch mechanism (22) further comprises: Two limit blocks (223) are connected with end portions of the two support rods (221); And Two first springs (224) are sleeved on the two support rods (221). Two ends of the clutch (222) are respectively sleeved on two support rods (221) through openings; two ends of the first spring (224) are respectively abutted against the limiting block (223) and the clutch (222); the cup placing plate (214) is abutted against the clutch (222).

5. A dry powder extinguishant drop test machine as claimed in claim 4, wherein, The clamping mechanism (21) further comprises two second guide plates (215) located between the two first guide plates (213), the two second guide plates (215) are respectively connected with two ends of the cup placing plate (214), the second guide plate (215) is slidingly connected with the first guide plate (213) on the same side and keeps parallel, a limiting pin (217) sliding along the longitudinal direction is arranged on a side of the second guide plate (215) facing the first guide plate (213), a limiting groove (216) in communication at the head and tail is arranged on a side of the first guide plate (213) facing the second guide plate (215), the end of the limiting pin (217) is inserted into the limiting groove (216) on the same side in a clearance, the limiting groove (216) comprises a first groove section (2161), a second groove section (2162), a third groove section (2163) and a fourth groove section (2164) which are sequentially communicated and gradually change in depth, one end of the fourth groove section (2164) away from the third groove section (2163) is in communication with the first groove section (2161), the depth of one end of the second groove section (2162) in communication with the first groove section (2161) is greater than the depth of one end of the first groove section (2161) in communication with the second groove section (2162), the depth of one end of the third groove section (2163) in communication with the second groove section (2162) is greater than the depth of one end of the second groove section (2162) in communication with the third groove section (2163), the depth of one end of the fourth groove section (2164) in communication with the third groove section (2163) is greater than the depth of one end of the third groove section (2163) in communication with the fourth groove section (2164), the depth of one end of the first groove section (2161) in communication with the fourth groove section (2164) is greater than the depth of one end of the fourth groove section (2164) in communication with the first groove section (2161), the first groove section (2161) and the fourth groove section (2164), the second groove section (2162) and the third groove section (2163) are V-shaped and the openings are all directed to the lifting device (30).

6. A dry powder extinguishant drop test machine as claimed in any one of claims 1 to 5 wherein, The top mounting member (202) is provided with a first hole; the test device (20) further comprises: a connecting rod (23) having two ends respectively connected with the rotating member (205) on the same side and a second hole formed in the middle; and an operating rod (24) which is connected with the second hole in a threaded manner after penetrating through the first hole and is connected with the first hole through a bearing.

7. A dry powder extinguishant drop test machine as claimed in claim 6, wherein, The lifting mechanism (35) comprises: a middle plate (351) connected with the chain (33); a top plate (352) connected with the upper end of the middle plate (351); a bottom plate (353) connected with the lower end of the middle plate (351); A buffer shaft (354) is longitudinally arranged and connected with the top plate (352) and the bottom plate (353) at two ends respectively; A lifting piece (355) is sleeved on the buffer shaft (354) through a through hole; and A second spring (356) is sleeved on the buffer shaft (354) and abuts against the bottom plate (353) and the lifting piece (355) at two ends respectively.

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