A testing device for a point-type smoke fire detector

Abstract

The present invention discloses a test device for a point-type smoke fire detector, belonging to the technical field of testing of smoke fire detectors, which includes a smoke box, a placement member, and a switching device. The smoke box has a "return" - shaped closed-loop cavity structure, and a smoke inlet pipe is connected to one side of the smoke box; an exhaust pipe is arranged on the lower side of the smoke box; the placement member includes a support plate, and a plurality of placement grooves are formed on the support plate. The support plate is slidably connected to the smoke box; by providing two support plates, one support plate is used for detection inside the smoke box, and the other support plate is used for placing the smoke fire detector body outside, which improves the utilization efficiency of time. After the detection is completed, switching is carried out through the switching device, so that the detection device can quickly detect the smoke fire detector body on the other support plate without stopping the machine, thereby improving the detection efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of the testing of smoke fire detectors, and particularly to a testing device for a point smoke fire detector. Background Art

[0002] The point smoke detector mainly detects smoke and is applicable to places with a smoldering stage in the initial stage of a fire. A smoke fire detector is a fire detector that responds to solid particles generated by combustion or heat medium. According to the property that smoke particles can directly or indirectly change the property or intensity of certain physical quantities, the smoke detector can be further divided into several types such as ion type, photoelectric type, laser type, capacitance type, semiconductor type, etc.

[0003] In the process of the development and research of various point smoke fire detectors and the optimization research of the detector detection algorithm, it is necessary to test the identification degree of the point smoke fire detector for fire smoke aerosol and environmental interference aerosol, improve the detector detection algorithm, distinguish real fires from false fires, so as to reduce the false alarm rate. The conventional method is to set the detector near each interference source respectively and rely on air flow to test the anti-interference performance of the detector.

[0004] In order to improve the test efficiency, multiple point smoke fire detectors are placed on a pallet at one time and then pushed into the box body of the test device, and then detected. After the detection is completed, the pallet is pulled out and the point smoke fire detectors are taken out one by one manually. After taking them all out, new point smoke fire detectors to be detected are put in again. During the process of taking out and placing the point smoke fire detectors, the detection device is in a stopped state. During the long-term operation of the detection device, the cumulative occupation time of taking out and placing is long, which is not conducive to improving the test efficiency. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem mentioned in the above background art that during the long-term operation of the detection device, the cumulative occupation time of taking out and placing is long, which is not conducive to improving the test efficiency.

[0006] In order to achieve the above purpose, the present invention adopts the following technical scheme:

[0007] A testing device for a point smoke fire detector includes a smoke box, a placement member, and a switching device. The smoke box has a "return" shaped closed-loop cavity structure. One side of the smoke box is connected with a smoke inlet pipe; an outlet pipe is arranged below the smoke box; the placement member includes a pallet, and a plurality of placement slots are formed on the pallet. The pallet is slidably connected with the smoke box; the switching device is arranged between two pallets. The switching device includes a driving device and a switching tooth member. Switching tooth plates for driving the pallet are respectively meshed on both sides of the switching tooth member, and the driving device is fixedly connected with one of the switching tooth plates.

[0008] Preferably, the switching device also includes a support frame supporting the driving device, the two switching tooth plates are slidably connected to the support frame, the switching tooth member is connected to the support frame, and the switching device also includes a test connector, the test connector includes a lifting rod inserted into the cigarette box, the bottom end of the lifting rod is connected to a connecting plate, and a connecting terminal is fixed on the connecting plate.

[0009] Preferably, the connecting plate is fixed to the protective plate, and the protective plate is located on the upper side of the connecting plate.

[0010] Preferably, a transmission component is provided between the lifting rod and the support plate, and the transmission component includes a rod body fixed at the top end of the lifting rod, the rod body is connected to a sleeve, a spring is sleeved on the rod body, two ends of the spring are respectively connected to the rod body and the sleeve, a transmission rack is fixedly connected to one side of the sleeve, a transmission gear 1 is rotatably connected to the support frame, a transmission tooth plate is slidably connected to the cigarette box, the transmission tooth plate is fixed to the outer end of the support plate, a transmission gear 2 is rotatably connected to the support frame, and the transmission gear 1 and the transmission gear 2 are connected through a pulley assembly 1.

[0011] Preferably, a shielding cover covering the support plate is slidably connected to the cigarette box, and the shielding cover slides out in the opposite direction to the support plate.

[0012] Preferably, a linkage component is provided between the sleeve and the shielding cover, the linkage component includes a linkage rack fixed on the other side of the sleeve, a linkage gear 1 is rotatably connected to the support frame, a linkage tooth plate is slidably connected to the cigarette box, the linkage tooth plate is fixed to the outer end of the shielding cover, a linkage gear 2 is rotatably connected to the support frame, the linkage gear 1 and the linkage gear 2 are transmission connected via a pulley assembly 2, and the linkage gear 1 is located at the lower side of the transmission gear 1.

[0013] Preferably, a first magnet is fixed on the shielding cover, and a second magnet attracted to the first magnet is fixed on the cigarette box.

[0014] Preferably, an adjustment device is provided upstream of the right side support plate, and the adjustment device includes an adjustment plate, the lower end of the adjustment plate is connected to a drive shaft, one end of the drive shaft extends through the smoke box to the outside and is connected to an adjustment handle, a bolt is threadedly connected to the adjustment handle, and a plurality of sockets are opened on the smoke box.

[0015] Preferably, two honeycomb flow guides corresponding to the support plates are arranged in the smoke box, and the two honeycomb flow guides are respectively located upstream of the support plates.

[0016] Preferably, a fan is provided in the cavity at the lower side of the smoke box, the fan is located upstream of the smoke outlet pipe, a baffle is rotatably connected in the smoke box, a rotating shaft of the baffle extends out of the smoke box and is connected to a motor, and a frame plate matching the baffle is provided in the smoke box.

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

[0018] By providing two pallets, one pallet is used for detection inside the smoke box, and the other pallet is used for placing the smoke detector body on the outside, which improves the utilization efficiency of time. After the detection is completed, through the switching device, the detection device can quickly detect the smoke detector body on the other pallet without stopping, which improves the detection efficiency. By means of the transmission component, when one pallet moves out, the other pallet enters the smoke box simultaneously, further improving the detection efficiency.

[0019] By providing a shielding cover, the pallet is covered before being pulled out, preventing the inside and outside of the smoke box from communicating during the pulling-out process of the pallet, thereby preventing smoke leakage and not affecting the test of the smoke detector on the other pallet.

[0020] By respectively arranging two honeycomb flow deflectors upstream of the two pallets, the two honeycomb flow deflectors make the smoke uniform, and the honeycomb flow deflector on the right makes the smoke passing through the left pallet uniform again, making sufficient preparations for the test of the smoke detector.

[0021] When the adjusting plate is adjusted one by one from top to bottom, the smoke passage on the upper side of the pallet gradually increases, so that the smoke concentration passing through the lower side of the right pallet gradually returns to the smoke concentration passing through the left pallet. Until the adjusting plate rotates to the horizontal position, the smoke concentrations passing through the two pallets are the same.

[0022] Through the cooperation of the test connecting piece, the pallet and the elastic sheet, the detection position of the smoke detector body can be limited and the smoke signal transmission connection can be provided simultaneously for multiple smoke detector bodies, making the transmission connection convenient while increasing the detection volume of the smoke detector body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 It is a schematic diagram of the back side of the present invention.

[0026] Figure 3 It is a schematic diagram of the positions of the two honeycomb flow deflectors of the present invention.

[0027] Figure 4 For the present invention Figure 3 Schematic enlarged view of position A in

[0028] Figure 5 Schematic diagram of the transmission component on the left side of the present invention.

[0029] Figure 6 Schematic diagram of the linkage component on the left side of the present invention.

[0030] Figure 7 Schematic diagram of the transmission component on the right side of the present invention.

[0031] Figure 8 Schematic diagram of the linkage component on the right side of the present invention.

[0032] Figure 9 Schematic diagram of the adjusting device of the present invention.

[0033] Figure 10 Schematic diagram of the baffle and the frame plate of the present invention.

[0034] Figure 11 Schematic diagram of the test connecting piece of the present invention.

[0035] Explanation of drawing numbers: 1. Smoke box; 11. Smoke inlet pipe; 12. Smoke outlet pipe; 13. Baffle; 14. Motor; 15. Frame plate; 2. Placing piece; 21. Support plate; 22. Slide rail; 23. Elastic sheet; 3. Switching device; 31. Driving device; 32. Switching tooth part; 321. Switching gear; 322. Step pulley assembly; 33. Switching tooth plate; 34. Support frame; 35. Test connecting piece; 351. Lifting rod; 352. Connecting plate; 353. Connecting terminal; 354. Protection plate; 36. Transmission component; 361. Rod body; 362. Sleeve; 363. Spring; 364. Transmission rack; 365. First transmission gear; 366. Transmission tooth plate; 367. Second transmission gear; 368. First pulley assembly; 37. Linkage component; 371. Linkage rack; 372. First linkage gear; 373. Linkage tooth plate; 374. Second linkage gear; 375. Second pulley assembly; 4. Fan; 5. Honeycomb flow guide piece; 6. Shielding cover; 7. First magnet; 8. Second magnet; 9. Adjusting device; 91. Adjusting plate; 92. Driving shaft; 93. Adjusting handle; 94. Bolt; 95. Jack. Detailed description of the specific implementation mode

[0036] The present invention will be further described in detail below with reference to the accompanying drawings.

[0037] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be used in other embodiments, variations, improvements, equivalent solutions, and other technical solutions without departing from the spirit and scope of the present invention.

[0038] Those skilled in the art should understand that in the disclosure of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or position based on the orientation or position relationship shown in the drawings. It is only for the convenience of simplifying the description of the present invention and does not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present invention.

[0039] It can be understood that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "a" should not be construed as limiting the quantity.

[0040] Please refer to Figure 1 - Figure 11 , a test device for a point-type smoke fire detector, which includes a smoke box 1, a placement member 2, and a switching device 3. The smoke box 1 has a "return" - shaped closed-loop cavity structure. One side of the smoke box 1 is connected with a smoke inlet pipe 11; an exhaust pipe 12 is arranged on the lower side of the smoke box 1. A fan 4 is arranged in the cavity on the lower side of the smoke box 1, and the fan 4 is located upstream of the exhaust pipe 12. A baffle 13 is rotatably connected in the smoke box 1, and the rotation shaft of the baffle 13 extends out of the smoke box 1 and is connected with a motor 14. A frame plate 15 cooperating with the baffle 13 is arranged in the smoke box 1. During detection, it is necessary to keep smoke in the smoke box 1. Therefore, the baffle 13 blocks the outlet corresponding to the exhaust pipe 12. When smoke exhaust is required, the motor 14 rotates the baffle 13, and the baffle 13 cooperates with the frame plate 15 to block the smoke. The fan 4 rotates, blowing the smoke into the exhaust pipe 12, thereby completing the smoke exhaust.

[0041] The placing member 2 includes a pallet 21, on which a plurality of placing grooves are formed for placing point-type smoke fire detectors. The pallet 21 is slidably connected to the smoke box 1. There is a slide rail 22 in the smoke box 1, and the pallet 21 is slidably connected to the slide rail 22. The two pallets 21 are located on the upper side of the cavity structure of the smoke box 1 and are arranged one in front of the other. Two honeycomb flow guiding members 5 corresponding to the pallets 21 are arranged in the smoke box 1, and the two honeycomb flow guiding members 5 are respectively located upstream of the pallet 21; the two honeycomb flow guiding members 5 make the smoke uniform, and the honeycomb flow guiding member 5 on the right makes the smoke passing through the left pallet 21 uniform again, making sufficient preparations for the determination of the smoke fire detector. Elastic pieces 23 are fixed on the pallet 21. Two elastic pieces 23 are symmetrically arranged on one placing groove. The two elastic pieces 23 are used to abut against the point-type smoke fire detector to make the point-type smoke fire detector stable, and the elastic pieces 23 have calibration properties, so that the energized end on the smoke fire detector corresponds to the elastic pieces 23, facilitating the accurate contact of the connecting terminal 353.

[0042] The switching device 3 is arranged between the two pallets 21. The switching device 3 includes a driving device 31 and a switching tooth member 32. The driving device 31 is a cylinder. Switching tooth plates 33 for driving the pallet 21 are respectively meshed on both sides of the switching tooth member 32, and the driving device 31 is fixedly connected to one of the switching tooth plates 33. The switching device 3 further includes a support frame 34 for supporting the driving device 31. Both switching tooth plates 33 are slidably connected to the support frame 34, and the switching tooth member 32 is connected to the support frame 34. In order to increase the stability of the switching tooth plates 33, the switching tooth member 32 includes two switching gears 321, the switching gears 321 are rotatably connected to the support frame 34, and each of the two switching gears 321 meshes with one switching tooth plate 33. The two switching gears 321 are connected by a synchronous pulley assembly 322.

[0043] The switching device 3 further includes a test connecting member 35. The test connecting member 35 includes a lifting rod 351 inserted into the smoke box 1. A connecting plate 352 is connected to the bottom end of the lifting rod 351. A connecting terminal 353 is fixed on the connecting plate 352. The connecting terminal 353 contacts the energized end on the smoke fire detector. The lifting rod 351 is of a hollow structure, and a cable passes through the lifting rod 351 and is connected to the connecting terminal 353. An industrial computer and an electrical distribution box are arranged on one side of the smoke box 1. The industrial computer can be a computer. A control panel is fixed on the surface of the electrical distribution box. The control panel is provided with an indicator light and control buttons. Both the panel indicator light and the control buttons are electrically connected to the industrial computer. The other end of the cable is connected to the industrial computer. The connection of the cable to the industrial computer is all prior art and will not be described further. The industrial computer, the electrical distribution box and the components on the electrical distribution box in this application are all prior art and are not shown in the figure.

[0044] The connecting plate 352 is fixed to a protection plate 354 , which is located on the upper side of the connecting plate 352 . The protection plate 354 is used to protect the connecting plate 352 and the connecting terminal 353 , and prevent them from contacting the top wall inside the cigarette box 1 .

[0045] A transmission component 36 is provided between the lifting rod 351 and the support plate 21. Two transmission components 36 are provided. The two transmission components 36 correspond to the two support plates 21 respectively. The transmission component 36 includes a rod body 361 fixed at the top of the lifting rod 351. A limiting ring is fixed at the top of the rod body 361. A sleeve 362 is connected to the rod body 361. The sleeve 362 is slidably connected to the rod body 361. There is a distance between the sleeve 362 and the lifting rod 351. There is also a distance between the limiting ring and the inner top wall of the sleeve 362. A spring 363 is sleeved on the rod body 361. The two ends of the spring 363 are respectively connected to the rod body 361. The sleeve 362 is connected to the sleeve 362, which is provided with a through slot. A transmission rack 364 is fixedly connected to one side of the sleeve 362. A transmission gear 1 365 is rotatably connected to the support frame 34. A transmission tooth plate 366 is slidably connected to the cigarette box 1. The transmission tooth plate 366 is fixed to the outer end of the support plate 21. A connecting rod extends from the end of the transmission tooth plate 366 and is fixed to the support plate 21. A transmission gear 2 367 is rotatably connected to the support frame 34. The transmission gear 2 367 is meshed with the transmission tooth plate 366. The transmission gear 1 365 and the transmission gear 2 367 are connected through a pulley assembly 1 368. The pulley assembly 1 368 is a transmission structure, which is a prior art. The two pulleys of the pulley assembly 1 368 of the present application have different diameters. The purpose of increasing the speed is achieved through the pulley assembly 1 368 from the transmission gear 1 365 to the transmission gear 2 367.

[0046] The smoke box 1 is slidably connected with a shielding cover 6 covering the support plate 21. The shielding cover 6 slides out in the opposite direction to the support plate 21. The shielding cover 6 covers the support plate 21 before the support plate 21 is pulled to prevent the inside of the smoke box 1 from being connected to the outside during the pulling out of the support plate 21, thereby preventing smoke from escaping and not affecting the test of the type smoke fire detector on the other support plate 21. Before the shielding cover 6 moves, the connecting terminal 353 has moved to the upper side of the shielding cover 6, and the shielding cover 6 will not collide with the connecting terminal 353 during the movement. The part of the shielding cover 6 located in the smoke box 1 is fixed with a limited block to prevent the shielding cover 6 from detaching from the smoke box 1.

[0047] A linkage component 37 is provided between the sleeve 362 and the shielding cover 6, and the linkage component 37 includes a linkage rack 371 fixed on the other side of the sleeve 362, a linkage gear 1 372 is rotatably connected to the support frame 34, and a linkage toothed plate 373 is slidably connected to the cigarette box 1, the transmission toothed plate 366 and the linkage toothed plate 373 are respectively located on both sides of the lifting rod 351, the linkage toothed plate 373 is fixed to the outer end of the shielding cover 6, and a linkage gear 2 374 is rotatably connected to the support frame 34, and the linkage gear 1 372 and the linkage gear 2 374 are connected through a pulley assembly 2 375 for transmission, the linkage gear 1 372 is located at the lower side of the transmission gear 1 365, the pulley assembly 2 375 is the same as the pulley assembly 1 368, and the pulley of the pulley assembly 2 375 is the same size as the pulley of the pulley assembly 1 368, and the purpose of increasing the speed from the linkage gear 1 372 to the linkage gear 2 374 is achieved through the pulley assembly 2 375. A magnet 17 is fixed on the shielding cover 6, and the magnet 17 is located on the limit block of the shielding cover 6. A magnet 28 attracted to the magnet 17 is fixed on the cigarette box 1. After the linkage rack 371 and the linkage gear 1 372 are separated, the magnet 17 is located on the limit block of the shielding cover 6. The magnet 28 is set at both ends of the track on the inner wall of the cigarette box 1. The magnet 28 increases the stability of the shielding cover 6 after it moves out of and enters the cigarette box 1. The magnet 17 and the magnet 28 are adsorbed to keep the shielding cover 6 stable in the cigarette box 1. Magnet 17 and magnet 28 are also set on one side of the support plate 21. The magnet 28 is also fixed on the cigarette box 1, and the magnet 17 is fixed on the support plate 21.

[0048] An adjusting device 9 is provided upstream of the right support plate 21. The adjusting device 9 includes an adjusting plate 91. The upper end of the adjusting plate 91 contacts the top wall of the cigarette box 1. The lower end of the adjusting plate 91 is connected to a driving shaft 92. An extension plate is fixed on the slide rail 22. The driving shaft 92 is rotatably connected to the extension plate. Both ends of the bottom of the adjusting plate 91 have arc-shaped portions, which are in contact with the extension plate for sealing. One end of the driving shaft 92 passes through the cigarette box 1 and extends to the outside to be connected to an adjusting handle 93. A bolt 94 is threadedly connected to the adjusting handle 93. A plug rod is fixed to the end of the bolt 94. A plurality of plug holes 95 are provided on the cigarette box 1. The plurality of plug holes 95 are distributed in an arc shape. Figure 9 As shown, the adjusting plate 91 blocks the upper space of the support plate 21, so that all the smoke passes through the lower side of the support plate 21, increasing the smoke concentration. The adjusting plate 91 is placed in different positions by inserting the plug rod into different plug holes 95. When the adjusting plates 91 are adjusted one by one from top to bottom, the smoke channel on the upper side of the right support plate 21 gradually increases, so that the smoke concentration passing through the lower side of the right support plate 21 gradually returns to the smoke concentration passing through the left support plate 21, until the adjusting plate 91 is rotated to a horizontal device, the smoke concentration passing through the two support plates 21 is the same.

[0049] During use, interference sources such as cigarettes, cooking fumes, and water mist are introduced into the smoke box 1 through the smoke inlet pipe 11. The fan 4 forms a circulating air flow in the "return" shaped closed-loop cavity of the smoke box 1, and the honeycomb guide member 5 makes the smoke uniform, providing a stable test environment for the anti-interference test of the point-type smoke fire detector. As Figure 1 and Figure 3 shown, the left support plate 21 is on the outside for placing the point-type smoke fire detector, and the right support plate 21 is on the inside of the smoke box 1 for detection. At this time, the point-type smoke fire detector is placed in the placement groove of the left support plate 21 and calibrated by the elastic piece 23.

[0050] After the detection is completed, the driving device 31 drives the right switching tooth plate 33 to move upward. The switching tooth plate 33 drives the sleeve 362 to move upward, and the linkage rack 371 and the transmission rack 364 move upward together with the sleeve 362. The sleeve 362 makes the lifting rod 351 move upward through the spring 363 and the rod body 361. The lifting rod 351 drives the protection plate 354, the connecting plate 352, and the connecting terminal 353 to move upward. When the connecting terminal 353 is above the shielding cover 6, the linkage rack 371 meshes with the first linkage gear 372, and the first linkage gear 372 rotates. The first linkage gear 372 drives the second linkage gear 374 to rotate through the second pulley assembly 375. The second linkage gear 374 drives the linkage tooth plate 373 to move, and the linkage tooth plate 373 makes the shielding cover 6 enter the smoke box 1. The upper and lower sides of the shielding cover 6 move along the slide rail 22. When the linkage rack 371 is separated from the first linkage gear 372, the end of the shielding cover 6 contacts the inner wall of the smoke box 1, and the first magnet 7 attracts the second magnet 8 on the inside of the smoke box 1 (as Figure 5 and Figure 6 shown). At this time, the shielding cover 6 and the two slide rails 22 cover the right support plate 21 and the point-type smoke fire detector on the support plate 21, and further cover the inlet and outlet of the support plate 21 to prevent the smoke from flowing out. The lifting rod 351 continues to move upward until the protection plate 354 contacts the inner top wall of the smoke box 1. After the lifting rod 351 stops moving, the sleeve 362 continues to move upward. The upward movement of the sleeve 362 makes the transmission rack 364 mesh with the first transmission gear 365. At this time, the spring 363 is compressed. The first transmission gear 365 drives the second transmission gear 367 to rotate through the first pulley assembly 368. The second transmission gear 367 makes the transmission tooth plate 366 move, and the transmission tooth plate 366 makes the support plate 21 move out. At this time, the first magnet 7 and the second magnet 8 on the support plate 21 are separated. When the switching tooth plate 33 stops, the sleeve 362, the transmission rack 364, and the linkage rack 371 stop moving. At this time, the transmission rack 364 still meshes with the first transmission gear 365 to maintain the stability of the support plate 21 after it is pulled out.

[0051] When the right switching tooth plate 33 moves upward to cause the switching gear 321 to rotate, the switching gear 321 on the left rotates synchronously through the synchronous pulley assembly 322. The switching gear 321 on the left causes the left switching tooth plate 33 to move downward. The left switching tooth plate 33 drives the sleeve 362, the transmission rack 364 and the linkage rack 371 to move downward. The transmission rack 364 causes the first transmission gear 365 to rotate. The first transmission gear 365 causes the second transmission gear 367 to rotate through the first pulley assembly 368. The second transmission gear 367 causes the transmission tooth plate 366 to move. The left support plate 21 on which the point-type smoke fire detector is placed moves along with the transmission tooth plate 366. When the transmission rack 364 is separated from the first transmission gear 365 and the first magnet 7 on the support plate 21 attracts the second magnet 8, the left support plate 21 also completely enters the smoke box 1. The spring 363 resumes, and then the sleeve 362 continues to move downward, causing the lifting rod 351 to also move downward. During the downward movement of the lifting rod 351, the linkage rack 371 meshes with the first linkage gear 372. The first linkage gear 372 causes the second linkage gear 374 to rotate through the second pulley assembly 375. The second linkage gear 374 causes the linkage tooth plate 373 to move. The linkage tooth plate 373 drives the shielding cover 6 to move out. The first magnet 7 on the shielding cover 6 is separated from the second magnet 8 on the smoke box 1. The lifting rod 351 continues to move downward. When the linkage rack 371 is separated from the first linkage gear 372, the shielding cover 6 completely moves out, causing the point-type smoke fire detector on the left support plate 21 to be completely exposed in the smoke box 1. After the linkage rack 371 is separated from the first linkage gear 372, the lifting rod 351 continues to move downward until the connection terminal 353 contacts the power-on end of the point-type smoke fire detector. At this time, the lifting rod 351 stops moving, and the sleeve 362 continues to move downward, causing the spring 363 to stretch. The spring 363 exerts a downward force on the rod body 361 and the lifting rod 351 to maintain the stable contact between the connection terminal 353 and the power-on end of the point-type smoke fire detector.

[0052] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The object of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the above-mentioned principles, any deformation or modification of the embodiments of the present invention is possible.

Claims

1. A test device for a point-type smoke fire detector, characterized in that, Including: A cigarette box (1), which has a "return" shaped closed-loop cavity structure. One side of the cigarette box (1) is connected with a cigarette inlet pipe (11); a cigarette outlet pipe (12) is arranged on the lower side of the cigarette box (1); A placing member (2), which includes a tray (21). A plurality of placing grooves are formed in the tray (21), and the tray (21) is slidably connected with the cigarette box (1); A switching device (3) is arranged between two support plates (21), the switching device (3) comprising a driving device (31) and a switching toothed member (32), the switching toothed member (32) having a switching toothed member (33) meshed with the driving support plate (21) on both sides, the driving device (31) being fixedly connected to one of the switching toothed members (33), the switching toothed member (32) being connected to a support frame (34), the switching device (3) further comprising a test connecting member (35), the test connecting member (35) comprising a lifting rod (351) inserted into the smoke box (1), a transmission component (36) being arranged between the lifting rod (351) and the support plate (21), the transmission component The component (36) comprises a rod body (361) fixed to the top end of the lifting rod (351), the rod body (361) is connected to a sleeve (362), the rod body (361) is sleeved with a spring (363), the two ends of the spring (363) are respectively connected to the rod body (361) and the sleeve (362), one side of the sleeve (362) is fixedly connected to a transmission rack (364), the support frame (34) is rotatably connected to a transmission gear 1 (365), when the sleeve (362) is located on the upper side of the rod body (361), the transmission rack (364) meshes with the transmission gear 1 (365), the cigarette box (1) is slidably connected to a transmission toothed plate (366), the The transmission tooth plate (366) is fixed to the outer end of the support plate (21); a transmission gear 2 (367) is rotatably connected to the support frame (34); the transmission gear 2 (367) is meshed with the transmission tooth plate (366); the transmission gear 1 (365) and the transmission gear 2 (367) are transmission-connected via a pulley assembly 1 (368); a shielding cover (6) covering the support plate (21) is slidably connected to the cigarette box (1); a linkage component (37) is provided between the sleeve (362) and the shielding cover (6); the linkage component (37) includes a linkage rack (371) fixed to the other side of the sleeve (362); the support frame (34) is rotatably connected to the transmission tooth plate (366); the transmission gear 2 (367) is meshed with the transmission tooth plate (366); the transmission gear 1 (365) and the transmission gear 2 (367) are transmission-connected via a pulley assembly 1 (368); a shielding cover (6) covering the support plate (21) is slidably connected to the cigarette box (1); a linkage component (37) is provided between the sleeve (362) and the shielding cover (6); the linkage component (37) includes a linkage rack (371) fixed to the other side of the sleeve (362); There is a linkage gear 1 (372), when the sleeve (362) is located at the lower side of the rod body (361), the linkage rack (371) meshes with the linkage gear 1 (372), a linkage toothed plate (373) is slidably connected to the cigarette box (1), the linkage toothed plate (373) is fixed to the outer end of the shielding cover (6), a linkage gear 2 (374) is rotatably connected to the support frame (34), the linkage gear 2 (374) meshes with the linkage toothed plate (373), the linkage gear 1 (372) and the linkage gear 2 (374) are connected in transmission via a pulley assembly 2 (375), and the linkage gear 1 (372) is located at the lower side of the transmission gear 1 (365).

2. The test device for a point-type smoke fire detector according to claim 1, characterized in that: The switching device (3) further includes a support frame (34) for supporting the driving device (31). Both of the switching toothed plates (33) are slidably connected to the support frame (34). The bottom end of the lifting rod (351) is connected to a connecting plate (352), and a connecting terminal (353) is fixed on the connecting plate (352).

3. The test device for a point smoke fire detector according to claim 2, characterized in that: A protection plate (354) is fixed on the connecting plate (352), and the protection plate (354) is located above the connecting plate (352).

4. The test device for a point-type smoke fire detector according to claim 3, characterized in that: The shielding cover (6) is in the opposite direction to the sliding direction of the support plate (21).

5. The test device for a point-type smoke fire detector according to claim 4, characterized in that: A first magnet (7) is fixed on the shielding cover (6), and a second magnet (8) which is attracted to the first magnet (7) is fixed on the cigarette box (1).

6. The test device for a point-type smoke fire detector according to claim 1, characterized in that: An adjusting device (9) is arranged upstream of the right support plate (21). The adjusting device (9) includes an adjusting plate (91). The lower end of the adjusting plate (91) is connected to a driving shaft (92). One end of the driving shaft (92) passes through the cigarette box (1) and extends to the outside to be connected to an adjusting handle (93). A bolt (94) is threadedly connected to the adjusting handle (93), and a plurality of jacks (95) are formed in the cigarette box (1).

7. The test device for a point-type smoke fire detector according to claim 1, characterized in that: Two honeycomb flow guiding members (5) corresponding to the support plates (21) are arranged in the cigarette box (1), and the two honeycomb flow guiding members (5) are respectively located upstream of the support plates (21).

8. The test device for a point-type smoke fire detector according to claim 7, characterized in that: A fan (4) is arranged in the cavity below the cigarette box (1). The fan (4) is located upstream of the smoke outlet pipe (12). A baffle (13) is rotatably connected in the cigarette box (1). The rotating shaft of the baffle (13) extends out of the cigarette box (1) and is connected to a motor (14). A frame plate (15) for cooperating with the baffle (13) is arranged in the cigarette box (1).

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