Device for testing wind speed in box body

Abstract

The utility model relates to a device for testing the wind speed in a box body, which comprises an environment bin and a limiting assembly, a controller is arranged on the outer surface of the environment bin, a moving assembly is arranged in the environment bin, and in the process of detecting formaldehyde and VOC (volatile organic compound) products, the environment bin is connected with an air outlet fan of an external production device; according to the technical scheme, formaldehyde and other volatile gases enter the environment bin, the driving motor is started, the wind speed measuring instrument body rotates, the wind speed measuring instrument body is driven to detect different positions through stretching and retracting of the telescopic rod, and then the wind speed measuring instrument body can measure the wind speeds of the different positions in the environment bin; the problem that in the prior art, most wind speed measuring instruments are fixedly installed, and the accuracy of measuring results is reduced is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind speed testing, in particular to a wind speed testing device inside a box body. Background Art

[0002] In the process of detecting products containing volatile substances such as VOC or formaldehyde, in order to detect whether the concentration of these volatile components exceeds the standard, staff usually use an environmental chamber to conduct volatile detection on these products. During the use of the environmental chamber, certain requirements are usually imposed on the temperature, humidity, pressure difference, and wind speed of the environmental chamber. Temperature, humidity, pressure difference, and wind speed will all affect the release amount of formaldehyde in the room.

[0003] During the detection of volatile substances such as formaldehyde and VOC, in the process of detecting the wind speed in the existing box body, most of the wind speed measuring instruments are fixedly installed inside the box body. And in order to measure the wind speed at different positions inside the box body, multiple wind speed measuring devices need to be placed inside the box body, and then the data collected by the multiple wind speed measuring instruments are averaged to obtain the specific wind speed inside the box body. Since the multiple wind speed measuring instruments are all fixedly installed, they can only fixedly measure the wind speed at specific positions and cannot measure the wind speed at each position inside the box body, so the accuracy of the measurement result is not high. Summary of the Invention

[0004] The purpose of the utility model is to provide a wind speed testing device inside a box body, which solves the problem of low accuracy of the measurement result due to the fixed installation of the wind speed measuring instrument in the prior art.

[0005] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A wind speed testing device inside a box body, characterized in that it includes an environmental chamber, a moving component, and a limiting component. A controller is provided on the outer surface of the environmental chamber. Two sliding rods are symmetrically and fixedly provided along the radial direction on the inner wall of the environmental chamber. The sliding rods all extend along the axial direction of the environmental chamber. A multi-stage electric push rod is provided inside the two sliding rods. A connecting rod is provided between the two sliding rods. The two ends of the connecting rod are respectively fixedly connected to the two multi-stage electric push rods.

[0007] The moving component includes a mounting plate and a mounting rod. One end of the mounting plate is fixedly connected to one side of the connecting rod. A driving motor is fixedly provided on the side surface of the mounting plate. The output shaft of the driving motor is fixedly connected to one end of a rotating shaft. The other end of the rotating shaft is fixedly connected to one end of a connecting column. The other end of the connecting column is perpendicularly and fixedly connected to one end of the rotating shaft. Two mounting holes are symmetrically arranged along the radial direction of the connecting column. The limiting component includes a fixing ring, a fourth spring, and an arc-shaped block. The side surface of the fixing ring is fixedly connected to the other side of the connecting rod. A connecting groove is provided along the length direction on the inner wall of the fixing ring. A second electromagnet is arranged in the connecting groove. The two ends of the fourth spring are respectively fixedly connected to the mounting hole and the arc-shaped block. The second electromagnet adsorbs the arc-shaped block.

[0008] Inside one end of the mounting rod, a forward and reverse motor is fixedly provided. The output shaft of the forward and reverse motor is fixedly connected to one end of a rotating column. The other end of the rotating column is fixedly connected to one end of a telescopic rod. The telescopic rod includes a first telescopic part, a second telescopic part, and a fixing part arranged in sequence from one end to the other end. The second telescopic part can slide along the inner wall of the first telescopic part. A first spring is sleeved outside the first telescopic part and the second telescopic part. The two ends of the first spring are respectively fixedly connected to the rotating column and the fixing part. The first telescopic part, the second telescopic part, and the first spring are all located inside the mounting rod. One end of the fixing part is inserted into the mounting rod. A plurality of card slots are provided on the outside of the fixing part. A first electromagnet is arranged inside the card slots. A wind speed measuring instrument is provided at the other end of the fixing part.

[0009] At the other end of the mounting rod, a mounting ring is fixedly provided. Two bearing rods are symmetrically arranged along the radial direction on the inner edge of the mounting ring. Limiting balls are provided at the heads of the two bearing rods. The limiting balls are movably connected to the bearing rods through second springs. The limiting balls are positioned by cooperating with the card slots through the first electromagnet.

[0010] The mounting ring also symmetrically arranges two groups of hydraulic plates along the radial direction. The hydraulic plates and the bearing rods are distributed at a 90° angle. Hydraulic rods are provided on the inner walls on both sides of the hydraulic plates. The bottom ends of adjacent two hydraulic rods are fixedly provided with lifting plates. Bent pipes are provided at the tops of the two lifting plates. Support balls are provided at the heads of the bent pipes. The support balls are movably connected to the bent pipes through third springs. The support balls are positioned by cooperating with the card slots through the first electromagnet.

[0011] The output shafts of the driving motor and the forward and reverse motor are both controlled to rotate by a controller.

[0012] Furthermore, a first damper is provided on the outside of the rotating column. The first spring is sleeved outside the first damper. The first damper is fixedly connected to one end of the telescopic rod.

[0013] Further, a second damper is provided at the head of the bearing rod, and the second spring is sleeved outside the second damper.

[0014] Further, a third damper is provided at the head of the elbow pipe, and the third spring is sleeved outside the third damper.

[0015] Further, a fourth damper is provided inside the mounting hole, and the fourth spring is sleeved at the outer end of the fourth damper.

[0016] Further, a rotating groove is provided inside the inner side of one end of the mounting rod, and the rotating column is fitted with the rotating groove.

[0017] Further, two bearing brackets are fixedly provided at one end of the mounting rod, and the forward and reverse motor is fixedly clamped between the two bearing brackets.

[0018] The utility model connects the environmental chamber with the air outlet fan of the external production device, so that the volatile gas of formaldehyde enters the interior of the environmental chamber. The driving motor is started, the anemometer rotates, and then through the telescopic movement of the telescopic rod, the anemometer is driven to detect different positions, so that the anemometer can measure the wind speed at different positions in the environmental chamber.

[0019] After the anemometer completes the measurement of the wind speed on the same horizontal plane in the environmental chamber, the multi-stage electric push rod is started to drive the connecting rod to move, driving the moving assembly to move. Through the back-and-forth movement of the moving assembly in the environmental chamber, the measurement range of the anemometer is further improved.

[0020] When it is necessary to fix the anemometer at a certain position to measure the wind speed at that place, the second electromagnet is electrically connected to an external power supply, so that the two arc-shaped blocks are respectively embedded into the connecting groove under suction and tightly connected to the second electromagnet, so that the anemometer stops rotating to measure the wind speed at that place. The operation state of the anemometer is controlled by the limiting component, further improving the measurement accuracy of the anemometer. Description of the Drawings

[0021] Figure 1 It is a front view schematic diagram of the utility model;

[0022] Figure 2 It is a side view schematic diagram of the utility model;

[0023] Figure 3 It is a schematic diagram of the connecting rod part of the utility model;

[0024] Figure 4 It is a schematic diagram of the rotating shaft part of the utility model;

[0025] Figure 5 It is an exploded sectional view schematic diagram of the mounting rod part structure of the utility model;

[0026] Figure 6 This is a schematic structural diagram of the telescopic rod part of the present utility model;

[0027] Figure 7 This is a schematic structural diagram of the mounting ring part of the present utility model;

[0028] Figure 8 This is an exploded sectional view of the fixed ring part of the present utility model.

[0029] Reference numerals:

[0030] 1 Environmental chamber; 2 Controller; 3 Connecting rod; 4 Moving assembly;

[0031] 401 Driving motor; 402 Mounting plate; 403 Rotating shaft; 404 Connecting column; 405 Mounting rod;

[0032] 406 Bearing frame; 407 Reversible motor; 408 Rotating column; 409 Rotating groove; 410 First damper;

[0033] 411 First spring; 412 Telescopic rod;

[0034] 4121 First telescopic part, 4122 Second telescopic part, 4123 Fixed part,

[0035] 413 Card slot; 414 First electromagnet; 415 Anemometer;

[0036] 416 Mounting ring; 417 Bearing rod; 418 Second damper; 419 Second spring; 420 Limiting ball;

[0037] 421 Hydraulic plate; 422 Hydraulic rod; 423 Lifting plate; 424 Elbow pipe; 425 Third damper;

[0038] 426 Third spring; 427 Supporting ball;

[0039] 5 Mounting hole; 6 Limiting assembly;

[0040] 601 Fixed ring; 602 Connecting groove; 603 Second electromagnet; 604 Fourth damper; 605 Fourth spring;

[0041] 606 Arc-shaped block;

[0042] 7 Slide bar; 8 Multi-stage electric push rod. Detailed implementation manners

[0043] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work shall fall within the protection scope of the present utility model.

[0044] Please refer to Figure 1-8 , a wind speed testing device inside a box of the present utility model, including an environmental chamber 1 and a limiting component 6. A controller 2 is arranged on the outer surface of the environmental chamber 1, and a moving component 4 is arranged inside the environmental chamber 1. The moving component 4 includes a mounting plate 402, a driving motor 401 is arranged on the outer surface of the mounting plate 402, and the controller 2 controls the rotation of the output shaft of the driving motor 401.

[0045] The output shaft of the driving motor 401 is fixedly connected with a rotating shaft 403. One end of the rotating shaft 403 is fixed with a connecting column 404. One end of the connecting column 404 is fixedly connected with a mounting rod 405. Two bearing frames 406 are fixedly connected to the lower end of the mounting rod 405. A positive and negative motor 407 is arranged between the outer surfaces of the two bearing frames 406, and the controller 2 controls the rotation of the output shaft of the positive and negative motor 407.

[0046] The output shaft of the positive and negative motor 407 is fixedly connected with a rotating column 408. A rotating groove 409 is opened on the inner wall of the lower end of the mounting rod 405. A first damper 410 is arranged on the outer surface of the rotating column 408. A first spring 411 is arranged on the outer surface of the first damper 410. One end of the first damper 410 is fixed with a telescopic rod 412. A plurality of clamping grooves 413 are opened on the outer surface of the telescopic rod 412. First electromagnets 414 are arranged on the inner walls of the plurality of clamping grooves 413. A wind speed measuring instrument 415 is arranged at one end of the telescopic rod 412.

[0047] As Figure 5 shown, the telescopic rod 412 includes a first telescopic part 4121, a second telescopic part 4122 and a fixing part 4123 arranged in sequence from one end to the other end. The second telescopic part 4122 can slide along the inner wall of the first telescopic part 4121. The first spring 411 is sleeved outside the first telescopic part 4121 and the second telescopic part 4122. Two ends of the first spring 411 are respectively fixedly connected with the rotating column 408 and the fixing part 4123. The first telescopic part 4121, the second telescopic part 4122 and the first spring 411 are all located inside the mounting rod 405. One end of the fixing part 4123 is inserted into the mounting rod 405. A plurality of clamping grooves 413 are arranged on the outside of the fixing part 4123. First electromagnets 414 are arranged inside the clamping grooves 413. A wind speed measuring instrument 415 is arranged at the other end of the fixing part 4123.

[0048] A mounting ring 416 is fixed to the upper end of the mounting rod 405, and two bearing rods 417 are fixed to the top of the mounting ring 416. A second damper 418 is arranged at one end of each of the two bearing rods 417, and a second spring 419 is arranged on the outer surface of each of the two second dampers 418. One end of each of the two second dampers 418 is fixedly connected to a limiting ball 420. Four hydraulic plates 421 are fixed to the top of the mounting ring 416, and hydraulic rods 422 are arranged on the inner top surfaces of the four hydraulic plates 421. The four hydraulic rods 422 form a group of two, and a lifting plate 423 is fixed between the bottom ends of each group of hydraulic rods 422. A bent pipe 424 is arranged at the top of the two lifting plates 423, and a third damper 425 is arranged at one end of each of the two bent pipes 424. A third spring 426 is arranged on the outer surface of each of the two third dampers 425, and one end of each of the two third dampers 425 is fixedly connected to a supporting ball 427.

[0049] Two sliding rods 7 are fixedly connected to the inner wall of the environmental chamber 1, and multi-stage electric push rods 8 are arranged on the inner walls of the two sliding rods 7. A connecting rod 3 is fixed between one ends of the two multi-stage electric push rods 8. The outer surface of the mounting plate 402 is fixedly connected to the outer surface of the connecting rod 3, and one end of the rotating shaft 403 is movably penetrated to the outside of the connecting rod 3, and the outer surface of the rotating column 408 is rotatably connected to the inside of the rotating groove 409.

[0050] One end of the two second springs 419 is fixedly connected to the outer surface of the two bearing rods 417, and the other end of the two second springs 419 is fixedly connected to the outer surface of the two limiting balls 420. The four hydraulic plates 421 are grouped into two, and the outer surfaces of the two lifting plates 423 are slidingly connected to the inner parts of the two groups of hydraulic plates 421, respectively. One end of the two third springs 426 is fixedly connected to the outer surface of the two bent pipes 424, and the other end of the two third springs 426 is fixedly connected to the outer surface of the two supporting balls 427.

[0051] In this embodiment, during the production of formaldehyde and VOC products, in order to prevent the concentration of these volatilized components from increasing, it is first necessary to connect the environmental chamber 1 to the air outlet fan of the external production device so that the volatile gas of formaldehyde enters the interior of the environmental chamber 1, and then adjust the temperature and humidity inside the environmental chamber 1 through the humidity adjustment and temperature adjustment equipment of the environmental chamber 1 itself. The environmental chamber 1 can accurately control the internal environmental parameters such as temperature, humidity and pressure, and realize stable setting and adjustment of environmental conditions through the equipped heating, cooling, humidification, dehumidification equipment, and pressure adjustment device. At the same time, the anemometer 415 is started to detect the wind speed in the environmental chamber 1. The anemometer 415 measures the rotation speed of the wind cup and then converts it to obtain the wind speed.

[0052] In order to enable the anemometer 415 to comprehensively detect the air volume at multiple positions in the environmental chamber 1, first, a plurality of first electromagnets 414 are electrically connected to an external power supply to generate a magnetic field, so that the two limiting balls 420 are attracted by the magnetic force and move into the interiors of the two corresponding card slots 413 respectively. Among them, the limiting balls 420 are made of iron material, and thus the two second springs 419 are elongated. When the two limiting balls 420 are respectively stuck into the two card slots 413, it plays a role in limiting the telescopic rod 412. Then, the driving motor 401 is started to drive the rotating shaft 403 to rotate, and then drive the connecting column 404 to rotate, and then drive the mounting rod 405 to rotate, thereby driving the telescopic rod 412 to rotate, and then driving the anemometer 415 to rotate. By the rotation of the anemometer 415, the measuring points of the anemometer 415 on the same plane are increased.

[0053] To further increase the measuring range of the anemometer 415, after the anemometer 415 rotates one week, the forward and reverse motor 407 is started to drive the rotating column 408 to rotate, and then drive the first damper 410 to rotate, thereby driving the telescopic rod 412 to rotate, and then driving a plurality of card slots 413 to rotate.

[0054] As Figures 6-7 shown, the card slot 413 is arc-shaped and the limiting ball 420 is spherical. When the card slot 413 rotates, the two limiting balls 420 move out of the interiors of the two card slots 413 along the arc-shaped inner walls of the card slots 413 respectively. When the two card slots 413 respectively rotate to the positions corresponding to the two supporting balls 427, the two supporting balls 427 are also attracted by the first electromagnet 414 and enter the interiors of the two corresponding card slots 413 respectively. At the same time, the two third springs 426 are elongated. The two supporting balls 427 are made of metallic iron. When the two supporting balls 427 are respectively in close contact with the outer surfaces of the two first electromagnets 414, the hydraulic rod 422 is started to drive the two lifting plates 423 to move upward, and then drive the two bent pipes 424 to move upward, so that the two supporting balls 427 move upward. The movement of the two supporting balls 427 drives the two card slots 413 to move upward, thereby driving the telescopic rod 412 to move upward, and then driving the anemometer 415 to extend towards the inner wall of the environmental chamber 1.

[0055] Start the forward and reverse motor 407, and drive the telescopic rod 412 to rotate again, so that the two limit balls 420 are respectively embedded into the interiors of the other two card slots 413 corresponding to them, that is, the positioning of the telescopic rod 412 is completed. Starting the drive motor 401 again can make the anemometer 415 rotate at another distance from the inner wall of the environmental chamber 1, so as to measure the air volume in multiple directions at a certain distance from the environmental chamber 1. Among them, since the two limit balls 420 and the two support balls 427 are attracted by multiple first electromagnets 414, and the two limit balls 420 and the two support balls 427 are also affected by the elastic forces of the second spring 419 and the third spring 426, the friction between the limit balls 420 and the two support balls 427 and the telescopic rod 412 is relatively large and the friction is greater than the elastic force of the first spring 411, and the rotation speed of the forward and reverse motor 407 is relatively large. Therefore, when the forward and reverse motor 407 drives the telescopic rod 412 to rotate, the telescopic rod 412 will not move into the interior of the mounting rod 405 in a short time. The telescopic rod 412 is driven to expand, contract and rotate by the moving assembly 4, so that the anemometer 415 can measure the wind speeds at different positions in the environmental chamber 1, thereby improving the accuracy of the wind speed measuring device.

[0056] When the measurement is completed, disconnect the connection between the multiple first electromagnets 414 and the external power supply, so that the limit balls 420 and the support balls 427 are no longer attracted by the magnetic field, thereby reducing the friction between the limit balls 420 and the support balls 427 and the telescopic rod 412. Then start the forward and reverse motor 407 to drive the telescopic rod 412 to rotate, so as to drive the card slot 413 to rotate to a position away from the limit balls 420 and the support balls 427, and the telescopic rod 412 can reset under the elastic force of the first spring 411.

[0057] After the anemometer 415 completes the measurement of the wind speed on the same horizontal plane in the environmental chamber 1, start the two multi-stage electric push rods 8 to make them extend or contract, drive the connecting rod 3 to move, and thus drive the moving assembly 4 to move. By the back-and-forth movement of the moving assembly 4 in the environmental chamber 1, the measurement range of the anemometer 415 is increased.

[0058] When it is necessary to fix the anemometer 415 at a certain position to measure the wind speed at that place, first electrically connect the second electromagnet 603 to the external power supply to generate a magnetic field, so as to generate an adsorption force on the two arc-shaped blocks 606. Among them, both arc-shaped blocks 606 are made of metallic iron. The two arc-shaped blocks 606 are respectively embedded into the interior of the connection groove 602 under the suction force and are tightly connected to the second electromagnet 603, so that the two fourth springs 605 are elongated, so that the connecting column 404 cannot continue to rotate, and the anemometer 415 stops rotating, and then accurately measures the wind speed at that place.

[0059] After the wind speed measurement at this location is completed, disconnect the second electromagnet 603 from the external power supply so that it no longer generates a magnetic field. The two arc-shaped blocks 606 are respectively moved out of the inside of the connecting groove 602 under the action of the reset of the fourth spring 605, and the drive motor 401 can continue to drive the wind speed measuring instrument 415 to rotate.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements 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.

Claims

1. A wind speed test device in a box, characterized in that: The invention comprises an environmental chamber (1), a moving assembly (4) and a limiting assembly (6); a controller (2) is provided on the outer surface of the environmental chamber (1); two sliding rods (7) are fixedly provided in a radially symmetrical manner on the inner wall of the environmental chamber (1); the sliding rods (7) extend along the axial direction of the environmental chamber (1); a multi-stage electric push rod (8) is provided inside the two sliding rods (7); a connecting rod (3) is provided between the two sliding rods (7); and two ends of the connecting rod (3) are respectively fixedly connected to the two multi-stage electric push rods (8). The moving assembly (4) comprises a mounting plate (402) and a mounting rod (405), one end of the mounting plate (402) is fixedly connected to one side of the connecting rod (3), a driving motor (401) is fixedly provided on the side of the mounting plate (402), an output shaft of the driving motor (401) is fixedly connected to one end of a rotating shaft (403), the other end of the rotating shaft (403) is fixedly connected to one end of a connecting column (404), the other end of the connecting column (404) is vertically fixedly connected to one end of the rotating shaft (403), and the connecting column (404) is radially symmetrical. Two mounting holes (5) are provided, and the limit assembly (6) comprises a fixing ring (601), a fourth spring (605) and an arc block (606); the side surface of the fixing ring (601) is fixedly connected to the other side of the connecting rod (3); the inner wall of the fixing ring (601) is provided with a connecting groove (602) along the length direction; a second electromagnet (603) is provided in the connecting groove (602); two ends of the fourth spring (605) are fixedly connected to the mounting hole (5) and the arc block (606) respectively; the second electromagnet (603) adsorbs the arc block (606); A forward and reverse motor (407) is fixedly arranged inside one end of the mounting rod (405); an output shaft of the forward and reverse motor (407) is fixedly connected to one end of a rotating column (408); the other end of the rotating column (408) is fixedly connected to one end of a telescopic rod (412); the telescopic rod (412) comprises a first telescopic portion (4121), a second telescopic portion (4122) and a fixed portion (4123) which are arranged in sequence from one end to the other end; the second telescopic portion (4122) can slide along the inner wall of the first telescopic portion (4121); the first telescopic portion (4121) and the second telescopic portion (4122) are The first spring (411) is sleeved on the outer side of the fixing rod (405), the two ends of the first spring (411) are fixedly connected to the rotating column (408) and the fixing part (4123), respectively; the first telescopic part (4121), the second telescopic part (4122) and the first spring (411) are all located inside the mounting rod (405); one end of the fixing part (4123) is inserted into the mounting rod (405); a plurality of slots (413) are provided on the outer side of the fixing part (4123); a first electromagnet (414) is provided inside the slot (413); and a wind speed measuring instrument (415) is provided at the other end of the fixing part (4123). A mounting ring (416) is fixedly provided at the other end of the mounting rod (405), and two bearing rods (417) are symmetrically provided along the radial direction on the inner edge of the mounting ring (416). The heads of the two bearing rods (417) are each provided with a limiting ball (420), and the limiting ball (420) is movably connected to the bearing rod (417) via a second spring (419). The limiting ball (420) is positioned by cooperating with the clamping slot (413) via the first electromagnet (414). The mounting ring (416) is further provided with two groups of hydraulic plates (421) symmetrically along the radial direction. The hydraulic plates (421) and the bearing rods (417) are distributed at an angle of 90 degrees. The inner walls of both sides of the hydraulic plates (421) are provided with hydraulic rods (422). The bottom ends of two adjacent hydraulic rods (422) are fixedly provided with lifting plates (423). The tops of the two lifting plates (423) are both provided with bent pipes (424). The heads of the bent pipes (424) are provided with supporting balls (427). The supporting balls (427) are movably connected to the bent pipes (424) via a third spring (426). The supporting balls (427) are positioned by cooperating with the clamping slots (413) via the first electromagnet (414). The output shafts of the driving motor (401) and the forward and reverse motor (407) are both controlled to rotate by the controller (2).

2. The wind speed test device in a box according to claim 1, characterized in that: A first damper (410) is provided on the outer side of the rotating column, the first spring (411) is sleeved on the outer side of the first damper (410), and the first damper (410) is fixedly connected to one end of the telescopic rod (412).

3. The wind speed test device in a box according to claim 1, characterized in that: A second damper (418) is provided at the head of the bearing rod (417), and the second spring (419) is sleeved on the outside of the second damper (418).

4. The wind speed test device in a box according to claim 1, characterized in that: The head of the curved pipe (424) is provided with a third damper (425), and the third spring (426) is sleeved on the outside of the third damper (425).

5. The wind speed test device in a box according to claim 1, characterized in that: A fourth damper (604) is provided inside the mounting hole (5), and the fourth spring (605) is sleeved on the outer end of the fourth damper (604).

6. The wind speed test device in a box according to claim 1, characterized in that: A rotation groove (409) is provided on the inner side of one end of the installation rod (405), and the rotating column (408) cooperates with the rotation groove (409).

7. The wind speed test device in a box according to claim 1, characterized in that: Two bearing frames (406) are fixedly provided at one end of the mounting rod (405), and the forward and reverse motor (407) is fixedly clamped between the two bearing frames (406).

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