Detection device for detecting wind pressure of fan

Abstract

The utility model discloses a detection device for detecting the wind pressure of a fan, which comprises a base, detection equipment and a connecting bracket, the detection equipment is fixedly arranged at the upper part of the base, and a pressure sensor is arranged at the upper part of the detection equipment; the connecting support is fixedly installed on the base, a supporting cross beam is arranged on the upper portion of the connecting support, a first fixing mechanism capable of installing or clamping the fan is arranged at one end of the supporting cross beam, and the first fixing mechanism is located above the pressure sensor. By adopting the above structure, an enterprise can use the first fixing mechanism to install or clamp the fan to carry out wind pressure detection, and the technical problem that the fan is easy to shake or fly off when a worker holds a universal clamp to clamp the fan to carry out wind pressure detection traditionally is solved. The accuracy and the reliability of the detection device for measuring the wind pressure are greatly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of fan testing equipment, and in particular to a testing device for detecting the wind pressure of a fan. Background Technology

[0002] With social development and continuous advancements in science and technology, more and more household appliances are entering people's daily lives. Many of these appliances require high-speed fans, such as hair dryers, robot vacuums, and vacuum cleaners. To ensure that these appliances achieve their designed performance in blowing or vacuuming, manufacturers have strict requirements for the performance parameters of the fans. Among these, the air pressure during operation is a crucial parameter. Therefore, manufacturers need to test the air pressure of the fans before they leave the factory.

[0003] Currently, companies typically test blowers by having workers manually hold and clamp the blower with a universal clamp. Before measurement, workers need to adjust the universal clamp to align the blower with the pressure sensor of the testing equipment. Then, they adjust the test height between the blower and the pressure sensor. Finally, the blower is powered on and continuously blows air onto the pressure sensor, which then monitors the wind pressure generated by the blower in real time. During this process, workers need to keep the universal clamp in a fixed position. However, due to the high wind pressure from the high-speed motor, the crosswind thrust during measurement can cause instability, such as forward / backward, left / right swaying, or even the blower flying off and causing injury. The measured data has serious uncertainties, which brings certain inconveniences to companies measuring the wind pressure of blowers. Utility Model Content

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention provides a detection device for detecting the wind pressure of a fan, which can reliably support and fix the fan for the detection equipment to perform wind pressure testing, thereby helping to improve the accuracy of fan wind pressure detection data.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A detection device for detecting wind pressure of a fan according to certain embodiments of the present invention includes a base, a detection device, and a connecting bracket. The detection device is fixedly disposed on the upper part of the base, and a pressure sensor for detecting wind pressure is disposed on the upper part of the detection device. The connecting bracket is fixedly installed on the base and is located on one side of the detection device. A support beam is disposed on the upper part of the connecting bracket, and a first fixing mechanism capable of installing or clamping the fan is disposed at one end of the support beam. The first fixing mechanism is located above the pressure sensor.

[0007] The beneficial effects of a detection device for detecting fan pressure according to certain embodiments of this utility model are as follows:

[0008] The detection device of this embodiment has a connecting bracket on the base located on one side of the detection equipment. A supporting beam is provided on the upper part of the connecting bracket. One end of the supporting beam is provided with a first fixing mechanism located above the pressure sensor of the detection equipment. Therefore, when the detection device of this embodiment is used to detect the wind pressure of a fan, the enterprise can install or clamp the fan to be tested on the first fixing mechanism. At this time, the fan can be accurately fixed above the pressure sensor of the detection equipment. When the fan is powered on and blows air towards the pressure sensor, the detection equipment can detect the wind pressure of the fan through the pressure sensor. This solves the technical problem that the fan is prone to shaking or flying off when the traditional method relies on workers to hold the fan with a universal clamp to detect the wind pressure. This greatly improves the accuracy and reliability of the detection device of this embodiment in measuring wind pressure.

[0009] In some embodiments of this utility model, the connecting bracket is a connecting round rod arranged in the vertical direction, the middle part of the supporting beam is rotatably sleeved on the outer periphery of the connecting bracket, and the other end of the supporting beam is provided with a second fixing mechanism that can install or clamp the fan; the supporting beam can rotate around the connecting bracket and make the second fixing mechanism or the first fixing mechanism located above the pressure sensor.

[0010] In some embodiments of this utility model, a rotation locking mechanism is provided between the supporting beam and the connecting bracket. The rotation locking mechanism can lock the supporting beam to the connecting bracket to restrict the rotation of the supporting beam relative to the connecting bracket, or the rotation locking mechanism can release the locking between the supporting beam and the connecting bracket.

[0011] In some embodiments of this utility model, the rotating locking mechanism includes a first annular member movably sleeved on the outer periphery of the connecting bracket. The first annular member is connected to or engaged with the supporting crossbeam. A first notch is provided on the side wall of the first annular member. The first annular member has first locking portions located on both sides of the first notch. A first bolt fastener is provided between the two first locking portions. The first bolt fastener can drive the two first locking portions to move relative to each other and move closer together, so that the first annular member clamps the connecting bracket. Alternatively, the first bolt fastener can loosen the two first locking portions and release the clamping of the first annular member on the connecting bracket.

[0012] In some embodiments of this utility model, the supporting beam is fixedly connected to the first annular member by bolts, or the supporting beam is welded to the first annular member.

[0013] In some embodiments of this utility model, at least one set of snap-fit ​​components is provided between the connecting bracket and the first annular member. The snap-fit ​​components include snap-fit ​​holes and snap-fit ​​posts that can engage with each other. One of the snap-fit ​​holes and the snap-fit ​​posts is provided in the connecting bracket, and the other is provided in the first annular member. When both the supporting beam and the first annular member are movably sleeved on the outer periphery of the connecting bracket, the snap-fit ​​post is inserted into the snap-fit ​​hole and the supporting beam and the first annular member are snapped together.

[0014] In some embodiments of this utility model, the number of the snap-fit ​​components is two sets, and the two sets of snap-fit ​​components are arranged circumferentially around the first annular component.

[0015] In some embodiments of this utility model, the supporting beam can move upward or downward relative to the connecting bracket in the vertical direction, and the connecting bracket is provided with a height adjustment device for supporting the supporting beam.

[0016] In some embodiments of this utility model, the height adjustment device includes a second annular member movably sleeved on the outer periphery of the connecting bracket. The second annular member is located below the supporting beam. A second notch is provided on the side wall of the second annular member. The second annular member has second locking portions located on both sides of the second notch. A second bolt fastener is provided between the two second locking portions. The second bolt fastener can drive the two second locking portions to move relative to each other and move closer together, so that the second annular member clamps the connecting bracket. Alternatively, the second bolt fastener can loosen the two second locking portions and release the clamping of the second annular member on the connecting bracket. When the second annular member clamps the connecting bracket, the second annular member can support and support the supporting beam and restrict the supporting beam from moving downward relative to the connecting bracket.

[0017] In some embodiments of this utility model, both the first fixing mechanism and the second fixing mechanism are clamps capable of holding the fan to be tested. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of a detection device for detecting the wind pressure of a fan, according to certain embodiments of the present invention.

[0020] Figure 2 for Figure 1 The diagram shows a structural schematic of a detection device for detecting wind pressure in a fan, taken from another angle.

[0021] Figure 3 for Figure 1 The diagram shows a schematic of the structure of a detection device for detecting the wind pressure of a fan when the second fixing mechanism is switched to clamp the fan for detection.

[0022] Figure 4 This is a schematic diagram of the structure of a detection device for detecting wind pressure of a fan in some embodiments of the present invention, in which the supporting crossbeam is in the raised state;

[0023] Figure 5 This is a schematic diagram of the structure of a detection device for detecting wind pressure of a fan in some embodiments of the present invention, in which the supporting crossbeam is in a lowered state. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, "several" means one or more, "multiple" means three or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first," "second," etc., are used only to distinguish technical features, and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0027] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] Figures 1 to 5 This is a schematic diagram of some embodiments of a detection device for detecting the wind pressure of a fan according to the present invention.

[0029] Reference Figures 1 to 5 and mainly refer to Figure 1 and Figure 2According to certain embodiments of the present invention, a detection device for detecting fan pressure is provided. For ease of explanation, it will sometimes be referred to simply as the "detection device". One embodiment of the present invention includes a base 100, a detection device 200, and a connecting bracket 300. In this embodiment, the base 100 is generally flat, and the upper surface dimension of the base 100 is larger than the bottom surface dimension of the detection device 200. The detection device 200 is fixedly installed on the upper part of the base 100. A pressure sensor 210 for detecting the wind pressure is provided on the upper part of the detection device 200. Since the detection device 200 is known in the art, it will not be described in detail here. A connecting bracket 300 is fixedly installed on the upper rear side of the base 100. The connecting bracket 300 is located on one side of the testing device 200. A supporting beam 310 is provided on the upper part of the connecting bracket 300. A first fixing mechanism 320 capable of installing or clamping the fan 600 is provided at one end of the supporting beam 310. The first fixing mechanism 320 is located above the pressure sensor 210. Specifically, the first fixing mechanism 320 is a clamp fixedly installed on one end of the supporting beam 310. The clamp is located above the pressure sensor 210. When the user applies force to the clamp and causes the clamp to open, the user can place the fan 600 to be tested between the two clamping arms of the clamp. Then, the user removes the external force applied to the clamp. Driven by its own torsion spring or spring, the two clamping arms of the clamp close and clamp the fan 600, so that the fan 600 is fixedly set above the pressure sensor 210, thereby facilitating the subsequent detection of the wind pressure of the fan 600 by the testing device 200.

[0030] It should be noted that, in addition to the clamp mentioned above, the first fixing mechanism 320 can also adopt other structures, such as a clamp that is fixedly installed on one end of the support beam 310. When the fan 600 needs to be installed, the user can loosen the clamp and then insert the fan 600 into the clamp. After that, the user tightens the clamp so that the clamp wraps around and locks the fan 600, so that the fan 600 is fixedly installed above the pressure sensor 210.

[0031] The detection device of this embodiment has a connecting bracket 300 on one side of the detection device 200 on the base 100. A supporting beam 310 is provided on the upper part of the connecting bracket 300. A first fixing mechanism 320 is provided at one end of the supporting beam 310 above the pressure sensor 210 of the detection device 200. Therefore, when the detection device of this embodiment is used to detect the wind pressure of the fan 600, the enterprise can install or clamp the fan 600 to be tested on the first fixing mechanism 320. At this time, the fan 600 can be accurately fixed above the pressure sensor 210 of the detection device 200. When the fan 600 is powered on and blows air toward the pressure sensor 210, the detection device 200 can detect the wind pressure of the fan 600 through the pressure sensor 210. This solves the technical problem that the fan 600 is prone to shaking or flying off when the traditional method relies on workers to hold the fan 600 with a universal clamp to detect the wind pressure. This greatly improves the accuracy and reliability of the detection device of this embodiment in measuring wind pressure.

[0032] Reference Figure 1 , Figure 2 and Figure 3 In some embodiments of this utility model, the connecting bracket 300 is a connecting round rod arranged in the vertical direction, the middle part of the supporting beam 310 is rotatably sleeved on the outer periphery of the connecting bracket 300, and the other end of the supporting beam 310 is provided with a second fixing mechanism 330 that can install or clamp the fan 600; the supporting beam 310 can rotate around the connecting bracket 300 and make the second fixing mechanism 330 or the first fixing mechanism 320 located above the pressure sensor 210. By adopting the above structure, the enterprise can install the fan 600 to be tested on the first fixing mechanism 320 and the second fixing mechanism 330 respectively. After the fan 600 on the first fixing mechanism 320 has been tested, the user can rotate the support beam 310 and make the second fixing mechanism 330 above the pressure sensor 210. At this time, the pressure sensor 210 can perform wind pressure detection on another motor 600 installed or clamped on the second fixing mechanism 330. During this process, the user can remove the fan 600 installed or clamped on the first fixing mechanism 320 and load other fans 600 to be tested for subsequent testing, which helps to improve the testing efficiency of the testing device in this embodiment. Alternatively, the first fixing mechanism 320 and the second fixing mechanism 330 may be of different sizes, thereby enabling the first fixing mechanism 320 and the second fixing mechanism 330 to install or clamp fans of different sizes in a one-to-one correspondence. Thus, when the detection device of this embodiment is used to detect two different sizes of fans 600, the user can choose the first fixing mechanism 320 or the second fixing mechanism 330 to clamp or install the fan 600 as needed, so that the detection device of this embodiment can be applied to detect the wind pressure of fans 600 of different sizes.

[0033] It should be noted that the second fixing mechanism 330 can be specifically set as a clamp or a clip. Since the specific structure of the second fixing mechanism 330 is the same as that of the first fixing mechanism 320 mentioned above, it will not be described again here.

[0034] In some embodiments of this utility model, a rotation locking mechanism is provided between the support beam 310 and the connecting bracket 300. The rotation locking mechanism can lock the support beam 310 to the connecting bracket 300 to restrict the rotation of the support beam 310 relative to the connecting bracket 300, or the rotation locking mechanism can release the locking between the support beam 310 and the connecting bracket 300. Specifically, the rotating locking mechanism includes a first annular member 400 movably sleeved on the outer periphery of the connecting bracket 300. The first annular member 400 is connected to or engaged with the supporting crossbeam 310. A first notch 410 is provided on the side wall of the first annular member 400. The first annular member 400 has first locking portions 420 located on both sides of the first notch 410. A first bolt fastener is provided between the two first locking portions 420. The first bolt fastener can drive the two first locking portions 420 to move relative to each other and move closer together, so that the first annular member 400 clamps the connecting bracket 300. Alternatively, the first bolt fastener can loosen the two first locking portions 420 and release the clamping of the first annular member 400 on the connecting bracket 300. By adopting the above structure, when the user switches between the first fixing mechanism 320 and the second fixing mechanism 330 to clamp or install the fan 600, the user can loosen the first bolt fastener and release the clamping of the first annular member 400 on the connecting bracket 300. At this time, the user can drive the support beam 310 to rotate relative to the connecting bracket 300, thereby switching the first fixing mechanism 320 or the second fixing mechanism 330 to be above the pressure sensor 210. After that, the user tightens the first bolt fastener, so that the first annular member 400 clamps the connecting bracket 300, thereby locking the support beam 310 to the connecting bracket 300 to restrict the rotation of the support beam 310 relative to the connecting bracket 300. Therefore, when the first fixing mechanism 320 or the second fixing mechanism 330 installs or clamps the fan 600 for wind pressure detection, the fan 600 will not rotate around the connecting bracket 300 and deviate from the pressure sensor 210, thereby making the detection results more accurate.

[0035] It is understood that, in addition to the structure described above, the rotation locking mechanism can also employ other structures. For example, the rotation locking mechanism may include a locking bolt, which is threaded onto the side wall of the rotation hole on the outer periphery of the connecting bracket 300, where the supporting beam 310 is fitted. The locking bolt can pass through the side wall of the rotation hole and press against the connecting bracket 300. By adopting the above structure, the user only needs to turn the locking bolt forward or backward to lock or release the support beam 310 and the connecting bracket 300.

[0036] In some embodiments of this utility model, the support beam 310 is fixedly connected to the first annular member 400 by bolts, or the support beam 310 and the first annular member 400 are welded together. By adopting the above structure, the connection between the support beam 310 and the first annular member 400 is simplified.

[0037] In some embodiments of this utility model, at least one set of snap-fit ​​components is provided between the connecting bracket 300 and the first annular member 400. Each snap-fit ​​component includes a snap-fit ​​hole and a snap-fit ​​post that can engage with each other. When the snap-fit ​​hole is located on the connecting bracket 300, the snap-fit ​​post is located on the first annular member 400; or when the snap-fit ​​hole is located on the first annular member 400, the snap-fit ​​post is located on the connecting bracket 300. When both the supporting beam 310 and the first annular member 400 are movably fitted onto the outer periphery of the connecting bracket 300, the snap-fit ​​post is inserted into the corresponding snap-fit ​​hole, causing the supporting beam 310 and the first annular member 400 to engage. Furthermore, there are two sets of snap-fit ​​components, arranged at intervals around the circumference of the first annular member 400. By adopting the above structure, when the first annular member 400 clamps the connecting bracket 300, the first annular member 400 is engaged with the supporting beam 310 through the snap-fit ​​assembly, thereby restricting the rotation of the supporting beam 310 relative to the connecting bracket 300. This achieves the function of locking the supporting beam 310 and the connecting bracket 300 to restrict the rotation of the supporting beam 310 relative to the connecting bracket 300. It should be noted that, in order to prevent the fan 600 from pushing the supporting beam 310 upward away from the first annular member 400 when it is powered on, in this embodiment, the snap-fit ​​hole and the snap-fit ​​post are interference-fitted. Therefore, when the snap-fit ​​post is inserted into the snap-fit ​​hole, it can fix the supporting beam 310 and the first annular member 400 together.

[0038] Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5In order to facilitate the adjustment of the height distance between the fan 600 and the pressure sensor 210, in some embodiments of this utility model, the support beam 310 is movably sleeved on the outer periphery of the connecting bracket 300. Therefore, the support beam 310 can move upward or downward relative to the connecting bracket 300 in the vertical direction. The connecting bracket 300 is provided with a height adjustment device for supporting the support beam 310. Specifically, the height adjustment device includes a second annular member 500 movably sleeved on the outer periphery of the connecting bracket 300. The second annular member 500 is located below the supporting beam 310. The side wall of the second annular member 500 has a second notch 510. The second annular member 500 has second locking portions 520 located on both sides of the second notch 510. A second bolt fastener is provided between the two second locking portions 520. The second bolt fastener can drive the two second locking portions 520 to move relative to each other and move closer together, so that the second annular member 500 clamps the connecting bracket 300. Alternatively, the second bolt fastener can loosen the two second locking portions 520 and release the clamping of the second annular member 500 on the connecting bracket 300. When the second annular member 500 clamps the connecting bracket 300, the second annular member 500 can support and support the supporting beam 310 and restrict the supporting beam 310 from moving downward relative to the connecting bracket 300. By adopting the above structure, the user can loosen the two second locking parts 520 by tightening the second bolt fastener and release the clamping of the second annular part 500 on the connecting bracket 300. At this time, the user can push the second annular part 500 to drive the support beam 310 to move upward or downward along the connecting bracket 300, thereby adjusting the height distance between the fan 600 and the pressure sensor 210 to the set value. Then, the user can tighten the second bolt fastener to drive the two second locking parts 520 to move closer to each other and make the second annular part 500 clamp the connecting bracket 300. At this time, the second annular part 500 supports and supports the support beam 310 and restricts the support beam 310 from moving downward relative to the connecting bracket 300, so that the height distance between the fan 600 and the pressure sensor 210 remains unchanged, so as to facilitate subsequent wind pressure detection.

[0039] It should be noted that, in addition to the structure described above, the height adjustment device can also adopt other structures. Specifically, an external thread is provided on the lower outer side wall of the connecting bracket 300. The height adjustment device is a nut that can be threaded onto the outer periphery of the connecting bracket 300. When the user turns the nut forward or backward, the nut can move upward or downward along the connecting bracket 300. In turn, the nut can support and push the support beam 310 to move upward or downward, thereby achieving the purpose of adjusting the height distance between the fan 600 and the pressure sensor 210.

[0040] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A detection device for detecting a wind pressure of a fan, characterized by, The utility model relates to a detection device for detecting the wind pressure of a fan, which comprises a base (100), a detection device (200) fixedly arranged on the upper part of the base (100), a pressure sensor (210) arranged on the upper part of the detection device (200) for detecting the wind pressure, a connecting support (300) fixedly installed on the base (100), the connecting support (300) being arranged on one side of the detection device (200), a support beam (310) arranged on the upper part of the connecting support (300), a first fixing mechanism (320) arranged on one end of the support beam (310) for mounting or clamping a fan, and the first fixing mechanism (320) being arranged above the pressure sensor (210).

2. The detection device for detecting the wind pressure of a fan according to claim 1, wherein the connecting support (300) is a connecting round rod arranged along the up-down direction, the middle part of the support beam (310) is rotatably sleeved on the outer periphery of the connecting support (300), and a second fixing mechanism (330) for mounting or clamping a fan is arranged on the other end of the support beam (310).

3. The detection device for detecting the wind pressure of a fan according to claim 2, wherein a rotating locking mechanism is arranged between the support beam (310) and the connecting support (300), the rotating locking mechanism can lock the support beam (310) to the connecting support (300) to limit the rotation of the support beam (310) relative to the connecting support (300), or the rotating locking mechanism can release the locking between the support beam (310) and the connecting support (300).

4. The detection device for detecting the wind pressure of a fan according to claim 3, wherein the rotating locking mechanism comprises a first annular member (400) movably sleeved on the outer periphery of the connecting support (300), the first annular member (400) is connected to or clamped to the support beam (310), a first gap (410) is formed in the side wall of the first annular member (400), the first annular member (400) has first locking portions (420) located on both sides of the first gap (410), a first bolt fastener is arranged between the two first locking portions (420), the first bolt fastener can drive the two first locking portions (420) to move relatively close to each other and make the first annular member (400) clamp the connecting support (300), or the first bolt fastener can loosen the two first locking portions (420) and release the clamping of the first annular member (400) on the connecting support (300).

5. The detection device for detecting the wind pressure of a fan according to claim 4, wherein ​ ​ ​ ​ ​ ​ ​ The support crossbeam (310) is fixedly connected with the first ring-shaped part (400) by bolts, or the support crossbeam (310) and the first ring-shaped part (400) are welded together.

6. The detection device for detecting the air pressure of a fan according to claim 4, characterized in that: At least one set of clamping assemblies is arranged between the connecting support (300) and the first ring-shaped part (400), the clamping assemblies include clamping holes and clamping columns capable of being clamped with each other, one of the clamping holes and the clamping columns is arranged on the connecting support (300), and the other is arranged on the first ring-shaped part (400), When the support crossbeam (310) and the first ring-shaped part (400) are movably sleeved on the outer periphery of the connecting support (300), the clamping columns are inserted into the clamping holes, and the support crossbeam (310) and the first ring-shaped part (400) are clamped.

7. The detection device for detecting the air pressure of a fan according to claim 6, characterized in that: The number of the clamping assemblies is two sets, and the two sets of clamping assemblies are arranged at intervals around the circumference of the first ring-shaped part (400).

8. The detection device for detecting the air pressure of a fan according to claim 2, characterized in that: The support crossbeam (310) can be moved upward or downward relative to the connecting support (300) along the up-down direction, and the connecting support (300) is provided with a height adjusting device for supporting and holding the support crossbeam (310).

9. The detection device for detecting the air pressure of a fan according to claim 8, characterized in that: The height adjusting device includes a second ring-shaped part (500) movably sleeved on the outer periphery of the connecting support (300), the second ring-shaped part (500) is located below the support crossbeam (310), a second gap (510) is formed in the side wall of the second ring-shaped part (500), the second ring-shaped part (500) has second locking parts (520) located on both sides of the second gap (510), a second bolt fastener is arranged between the two second locking parts (520), the second bolt fastener can drive the two second locking parts (520) to move relatively close to each other and make the second ring-shaped part (500) clamp the connecting support (300), or the second bolt fastener can loosen the two second locking parts (520) and release the clamping of the second ring-shaped part (500) on the connecting support (300); When the second ring-shaped part (500) clamps the connecting support (300), the second ring-shaped part (500) can support and hold the support crossbeam (310) and limit the downward movement of the support crossbeam (310) relative to the connecting support (300).

10. The detection device for detecting the air pressure of a fan according to claim 2, characterized in that: The first fixing mechanism (320) and the second fixing mechanism (330) are both clamps capable of clamping the fan to be detected.

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