Testing device

Abstract

According to the testing device, the supporting part is an installation carrier of other parts, the containing part is installed on the supporting part and used for containing the draught fan, the clamping part is used for fixing the draught fan to the containing part, and the situation that the draught fan is separated from the containing part due to too large vibration amplitude when started is avoided; and the detection part is used for detecting the vibration amplitude and the vibration frequency when the fan is started, after the vibration amplitude and the vibration frequency are subjected to characteristic value calculation, the characteristic values are compared with a certain preset threshold value, and the result whether the vibration amplitude and the vibration frequency of the fan are qualified or not can be obtained, so that whether the fan is qualified or not is judged.

Description

Technical Field

[0001] The invention belongs to the technical field of fan testing, and in particular relates to a testing device. Background Art

[0002] At present, with the development of science and technology, smart sweeping robots have entered thousands of households. Smart sweeping robots can automatically clean the floor, greatly improving the happiness of home life. Sweeping robots have many parts, among which the fan is the core component of the sweeping robot.

[0003] The fan can suck the garbage collected by the robot vacuum into the robot's garbage collection chamber for garbage collection. When the fan is in operation, it will generate the following vibrations: motor vibration, fan blade vibration, and air vibration.

[0004] It is understandable that before the fan is installed on the sweeping robot, it is necessary to perform a vibration test on the fan to avoid installing a fan with large vibration inside the sweeping robot. Currently, it is necessary to design a testing device to detect the vibration of the fan when it is working. Summary of the Invention

[0005] The purpose of the embodiments of the present application is to provide a testing device for performing a relatively accurate test on the vibration of a fan.

[0006] To achieve the above-mentioned purpose, the technical solution adopted in this application is: to provide a testing device, including: a supporting part; a accommodating part connected to the supporting part, the accommodating part is provided with an accommodating cavity, and the accommodating cavity is used to at least partially accommodate the fan; a clamping part connected to the accommodating part, the clamping part is used to fix the fan to the accommodating part; and a detection part, the detection part is connected to the accommodating part and is used to collect the vibration signal of the fan. Optionally, the supporting portion includes a base and a plurality of supporting members, and the plurality of supporting members are arranged at intervals on the base; the testing device further includes a connecting portion, and the accommodating portion is suspended on the supporting member via the connecting portion.

[0007] Optionally, the number of the supporting members is the same as the number of the connecting portions, there are two supporting members, and the two supporting members are arranged opposite to each other; the two sides of the accommodating portion are respectively connected to the two supporting members via the connecting portions.

[0008] Optionally, the number of the supporting members is different from the number of the connecting parts; the supporting part further includes a top plate; the accommodating part is respectively connected to the supporting member and the top plate through the connecting part; the top plate, the base and the supporting member jointly define an operating space.

[0009] Optionally, the top plate is provided with a protruding structure, the protruding structure extends from the top plate toward the base, the length of the protruding structure is shorter than the length of the support member, and the connecting portion is connected to the protruding structure.

[0010] Optionally, the top plate is provided with an observation hole, and along the arrangement direction of the support member, the accommodating portion is at least partially exposed from the observation hole.

[0011] Optionally, the testing device further includes an adjusting portion, which is slidably disposed on the supporting member, and the connecting portion is connected to the supporting member via the adjusting portion.

[0012] Optionally, the adjusting portion includes a ring, a locking piece and a protrusion; the ring is sleeved on the support member and can slide on the support member; the locking piece is connected to the ring and is used to fix the ring to the support member; the protrusion is arranged on the outside of the ring and is used to connect with the connecting portion.

[0013] Optionally, the accommodating portion includes a main body and a accommodating member, the accommodating member is provided on the main body, the accommodating cavity is provided in the accommodating member, and the main body is used to be connected to the connecting portion.

[0014] Optionally, a mounting seat is provided on the side wall of the accommodating member, the clamping portion is connected to the mounting seat, and the force arm of the clamping portion is used to abut against the fan casing and apply a pressing force, and the pressing force keeps the motor installed in the accommodating cavity.

[0015] Optionally, the force application point of the force application arm is spaced apart from the axis point of the accommodating member, and the detection portion and the force application arm are relatively arranged on two sides of the axis point.

[0016] Optionally, the side wall of the accommodating member is further provided with a first opening, and the first opening connects the accommodating cavity with the outside of the accommodating member.

[0017] Optionally, the first opening is arranged opposite to the mounting seat.

[0018] Optionally, the body is provided with a second opening, which passes through the body and communicates with the accommodating cavity.

[0019] Optionally, the detection portion is arranged on a side of the body facing away from the accommodating member.

[0020] Optionally, the testing device further includes a power supply control unit, which is connected to the supporting unit and is used to be electrically connected to the fan and control the start and stop of the fan.

[0021] The beneficial effects of the present application are: the testing device of this embodiment, the supporting part is a mounting carrier for other components, the accommodating part is installed on the supporting part and is used to accommodate the fan, the clamping part is used to fix the fan to the accommodating part to prevent the fan from detaching from the accommodating part due to excessive vibration amplitude when the fan is started, and the detection part is used to detect the vibration amplitude and vibration frequency when the fan is started. By calculating the characteristic values ​​of the vibration amplitude and vibration frequency and comparing the characteristic values ​​with a preset threshold value, the result of whether the vibration amplitude and vibration frequency of the fan are qualified can be obtained, thereby judging whether the fan is qualified. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or exemplary technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] Figure 1 A three-dimensional diagram of a testing device according to an embodiment of the present invention; Figure 2 Another perspective view of a testing device according to an embodiment of the present invention; Figure 3 is another perspective view of a testing device according to an embodiment of the present invention; Figure 4 is a schematic structural diagram of a receiving portion according to an embodiment of the present invention; Figure 5 is a schematic diagram of a clamping portion according to an embodiment of the present invention; Figure 6 A schematic diagram of a fan installation according to an embodiment of the present invention; Figure 7 Schematic diagram of the structure of the adjustment unit according to an embodiment of the present invention.

[0024] Among them, the reference numerals in the figures are: 10. Test device; 100, support portion; 110, base; 120, support member; 130, top plate; 140, observation hole; 150, operating space; 160, raised structure; 200, accommodating portion; 210, main body; 220, accommodating member; 221, accommodating cavity; 230, first opening; 240, second opening; 250, mounting seat; 300, clamping portion; 310, main body; 320, force arm; 330, handle; 340, connecting rod; 400, Testing Department; 500, connecting part; 600, adjusting portion; 610, collar; 620, locking member; 630, protruding member; 700, power supply control unit; 20. Fan. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit this application.

[0026] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The terms "upper", "lower", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of description and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "first" and "second" are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0027] Before describing the technical solution of the present application, in order to facilitate the description of the positions of the various components, the X-axis direction, Y-axis direction and Z-axis direction are introduced to illustrate the positions of the various components, where the direction indicated by the arrow is the positive direction. It can be understood that these directions are only used to illustrate the technical solution and are not used to limit the technical solution.

[0028] See also Figure 1-3 The embodiment of the present application provides a testing device 10 that can be used to perform a vibration test on a wind turbine 20. The testing device 10 includes a supporting portion 100, a receiving portion 200, a clamping portion 300, and a detecting portion 400.

[0029] Regarding the above-mentioned support part 100, the support part 100 is roughly a frame structure, and its outer contour can be a cube or a rectangular parallelepiped. The support part 100 can be made entirely of metal materials such as stainless steel, so as to have good rigidity.

[0030] In a possible embodiment, the support portion 100 includes a base 110 and a plurality of support members 120 .

[0031] The base 110 is generally plate-shaped and has a certain thickness. When the base 110 is made of metal, the base 110 is heavy and has good stability and load-bearing capacity. In a possible example, the base 110 can be a square plate or a rectangular plate.

[0032] The support member 120 can be rod-shaped or plate-shaped. The cross-sectional shape of the support member 120 can be selected as needed and can be either regular or irregular. In one possible embodiment, the cross-sectional shape of the support member 120 is square, rectangular, or circular. The number of support members 120 can be 2, 3, ..., N, where N is a positive integer.

[0033] Several support members 120 are arranged at intervals on the base 110. For example, when the base 110 is a square plate, the number of support members 120 can be four, and the four support members 120 are respectively arranged at the four corners of the base 110, and each support member 120 is arranged in the Z-axis direction.

[0034] The aforementioned accommodating portion 200 is connected to the supporting portion 100. The accommodating portion 200 is provided with an accommodating cavity 221, which is used to at least partially accommodate the fan 20. It is understood that the accommodating portion 200 accommodates the fan 20 via the accommodating cavity 221, thereby providing a structural basis for measuring the vibration signal of the fan 20 during operation. It should be noted that the term "connection" herein can refer to a direct connection between the accommodating portion 200 and the supporting portion 100, or an indirect connection between the accommodating portion 200 and the supporting portion 100 via other components.

[0035] The clamping portion 300 is connected to the accommodating portion 200. It is understood that when the fan 20 is housed in the accommodating cavity 221 and is in the activated state, the fan 20 will generate corresponding vibrations. At this time, the possibility of the fan 20 escaping from the accommodating cavity 221 increases. The clamping portion 300 can clamp the fan 20, thereby fixing the fan 20 to the accommodating portion 200, thereby reducing the probability of the fan 20 escaping from the accommodating portion 200 during the vibration test.

[0036] As for the above-mentioned detection unit 400, it is connected to the accommodating portion 200 and is used to collect the vibration signal of the fan 20. In one possible example, the detection unit 400 may include a three-way vibration sensor to obtain vibration signals in all directions when the fan 20 vibrates. In one possible example, the detection unit 400 is provided on the support portion 100. When the fan 20 is installed in the accommodating portion 200, the detection unit 400 is connected to the housing of the motor, thereby realizing an indirect connection between the detection unit 400 and the accommodating portion 200. In another possible example, the detection unit 400 is directly connected to the accommodating portion 200. The detection unit 400 can calculate the characteristic values ​​of the obtained vibration amplitude and vibration frequency, and then compare the characteristic values ​​with a preset threshold value to determine whether the fan 20 is qualified.

[0037] In the test device 10 of this embodiment, the support portion 100 is a mounting carrier for other components, the accommodating portion 200 is installed on the support portion 100 and is used to accommodate the fan 20, the clamping portion 300 is used to fix the fan 20 to the accommodating portion 200 to prevent the fan 20 from detaching from the accommodating portion 200 due to excessive vibration amplitude when the fan 20 is started, and the detection portion 400 is used to detect the vibration amplitude and vibration frequency of the fan 20 when it is started. By calculating the characteristic values ​​of the vibration amplitude and vibration frequency and comparing the characteristic values ​​with a preset threshold value, the result of whether the vibration amplitude and vibration frequency of the fan 20 are qualified can be obtained, thereby determining whether the fan 20 is qualified.

[0038] The testing device 10 of the present invention is described below with reference to specific embodiments.

[0039] It can be understood that when the accommodating portion 200 and the supporting portion 100 are directly connected, the clamping portion 300 fixes the fan 20 in the accommodating portion 200, and the fan 20 runs and vibrates. At this time, the supporting portion 100 and the clamping portion 300 both affect the vibration signal of the motor, for example, the vibration amplitude of the fan 20 may be reduced, and the vibration signal obtained by the detection portion 400 may be distorted.

[0040] To address the above-mentioned issues, the testing device 10 further includes a connecting portion 500, through which the accommodating portion 200 is suspended from the support member 120. Specifically, the connecting portion 500 may be an elastic cord or an elastic band. One end of the elastic cord is connected to the support rod, and the other end of the elastic cord is connected to the accommodating portion 200. With the connecting portion 500 serving as the connecting medium between the accommodating portion 200 and the support portion 100, the mass of the connecting portion 500 is negligible relative to the instructions of the support portion 100, and the influence of the support portion 100 on the vibration of the motor can be eliminated, thereby improving the accuracy of the vibration signal obtained by the detection portion 400.

[0041] The following describes how the supporting portion 100 is connected to the accommodating portion 200 via the connecting portion 500 with some specific examples.

[0042] In another embodiment, the number of the supporting members 120 is the same as the number of the connecting portions 500 .

[0043] Please refer to Figure 1 There are four support members 120 and four connecting portions 500. The four support members 120 are spaced apart and arranged at equal intervals on the base 110. The accommodating portion 200 is connected to the four support members 120 via the four connecting portions 500, thereby suspending the accommodating portion 200. Preferably, the four support members 120 can be arranged in a square.

[0044] In this embodiment, the number of the support members 120 is the same as that of the connecting portions 500. Without setting additional components, the support portion 100 and the accommodating portion 200 can be connected. The structure is simple and the installation is convenient. Moreover, each structure is symmetrically designed, so the overall stability of the device is relatively strong.

[0045] In one embodiment, the number of the support members 120 is different from that of the connecting portions 500.

[0046] Please refer to Figure 2 , there are two support members 120 and four connecting portions 500.

[0047] The support members 120 are arranged on one side of the base 110 along the negative Y-axis direction. Optionally, when there is one support member 120, the support member 120 can be in a plate shape, and the plate-shaped support member 120 can be connected to the base 110 through a groove provided on the base 110.

[0048] One side of the accommodating portion 200 is connected to the two support members 120 respectively through the two connecting portions 500.

[0049] The support portion 100 further includes a top plate 130. The shape and size of the top plate 130 can be similar to those of the base 110. Optionally, the top plate 130 can be parallel to the base 110. A hole can be provided on one side of the top plate 130 along the positive Y-axis direction, and the support member 120 is inserted into the hole to achieve the indirect connection between the top plate 130 and the base 110.

[0050] The other side of the accommodating portion 200 is connected to the top plate 130 through the two connecting portions 500.

[0051] It can be understood that since one side of the top plate 130 and the base 110 along the positive Y-axis direction is not connected by the support member 120, the outer contour after the connection of the top plate 130, the base 110 and the support rod is generally in a "U" shape, thereby defining an operation space 150. Workers can install the fan 20 into the accommodating portion 200 or disassemble the fan 20 from the accommodating portion 200 through the operation space 150.

[0052] In this embodiment, by connecting the accommodating portion 200 through the top plate 130 and the support member 120 respectively, the number of the support members 120 can be reduced. An operation space 150 can be formed on the side where the support member 120 is not provided, which is convenient for workers to load and unload the fan 20 and is easy to use.

[0053] On the basis of the above embodiment, the top plate 130 is provided with a convex structure 160.

[0054] The convex structure 160 is generally columnar. The convex structure 160 extends from the top plate 130 towards the base 110. Preferably, the convex structure 160 is cylindrical and is arranged along the negative Z-axis direction.

[0055] The length of the protruding structure 160 is shorter than that of the supporting member 120. Thus, the operating space 150 is still available. Moreover, since the connecting portion 500 is connected to the protruding structure 160, the inclination of the accommodating portion 200 can be adjusted by adjusting the connection position of the connecting portion 500 and the protruding structure 160, which facilitates leveling when the fan 20 is installed.

[0056] Optionally, the length of the protruding structure 160 can be one-sixth, one-fifth, one-quarter, or one-third of the length of the support member 120. It is understood that the protruding structure 160 needs to have a certain adjustment space, but it cannot be too long to affect the operating space. Under the concept of this application, those skilled in the art can determine the appropriate length and are not limited to the lengths listed.

[0057] In a possible embodiment, since workers have the habit of looking down at the test device 10 from the top plate 130 and then using both hands to load and unload the fan 20, although additional operating space 150 can be added by setting up the top plate 130, it will partially block the workers' line of sight.

[0058] In this embodiment, the top plate 130 is provided with an observation hole 140. The observation hole 140 can be of either regular or irregular shape. The observation hole 140 extends through the top plate 130. Along the orientation of the support member 120, the accommodating portion 200 is at least partially exposed through the observation hole 140. The installation status of the fan 20 can be determined through the observation hole 140.

[0059] Optionally, the size of the observation hole 140 is at least larger than half the area of ​​the top plate 130 to maximize the viewing range. Preferably, the outer contour of the observation hole 140 can be "C"-shaped, with the middle solid portion of the "C"-shaped observation hole 140 connected to the support member 120, and the two ends of the "C"-shaped observation hole 140 connected to the connecting portion 500. The middle virtual portion (hole) of the "C"-shaped observation hole 140" has a larger viewing window.

[0060] For a possible embodiment, please refer to Figure 2 , Figure 3 as well as Figure 7 The testing device 10 also includes an adjustment portion 600, which is slidably mounted on the support member 120 (the adjustment portion 600 may also be slidably mounted on the raised structure 160). The connecting portion 500 is connected to the support member 120 via the adjustment portion 600 (the connection portion 500 may also be connected to the raised structure 160 via the adjustment portion 600). The height of the connecting portion 500 can be adjusted via the adjustment portion 600, thereby adjusting the height of the accommodating portion 200 and its tilt angle relative to the base 110.

[0061] Illustratively, the adjustment portion 600 includes a collar 610 , a locking member 620 , and a protruding member 630 .

[0062] The collar 610 is annular and has a hole therein. The shape and size of the hole match the outer shape of the support member 120. For example, the collar 610 is cylindrical with a circular hole therein, and the support member 120 is a round rod. The collar 610 is sleeved onto the round rod through the circular hole, and the circular hole of the collar 610 and the round rod have a transition fit or a clearance fit to enable the collar 610 to slide on the support member 120. It should be noted that the shape of the hole in the collar 610 is not limited to a circular hole, but can also be a square hole, a hole of a different shape, etc., and those skilled in the art can determine the shape based on the outer contour of the support member 120 without inventive effort.

[0063] The locking member 620 is connected to the collar 610 and is used to secure the collar 610 to a specific position on the support member 120. For example, a threaded hole (communicating with a hole within the collar 610) may be provided on the sidewall of the collar 610. The threaded hole may be arranged radially along the collar 610. The locking member 620 may be a bolt that mates with the threaded hole. To secure the collar 610, the bolt is screwed into the threaded hole and abuts against the outer wall of the support member 120. The friction between the bolt surface and the outer wall of the support member 120 secures the collar 610. To move the collar 610, the bolt is unscrewed from the threaded hole and disconnected from the outer wall of the support member 120.

[0064] Optionally, one or more locking members 620 may be provided. When multiple locking members 620 are provided, the arrangement directions of the multiple locking members 620 intersect.

[0065] The protrusion 630 is generally cylindrical, and its cross-section can be either regular or irregular. For example, the protrusion 630 can be cylindrical, composed of multiple different cylindrical parts connected together. The protrusion 630 is disposed on the outer wall of the collar 610. Optionally, the protrusion 630 can be fixedly connected to the collar 610 (e.g., integrally formed, welded) or removably connected (e.g., threaded). One end of the connecting portion 500 can be wrapped around and fixed to the protrusion 630, thereby connecting the connecting portion 500 to the adjusting portion 600.

[0066] In this embodiment, the height of the connecting portion 500 can be adjusted by the adjusting portion 600 , so that the accommodating portion 200 can be adjusted to be parallel to the mounting base 250 , thereby ensuring that the data collected by the three-way sensor is more accurate.

[0067] In a possible embodiment, the outer side walls of the support member 120 and the protruding structure 160 are both provided with height scale lines (not shown in the figure), and the position of the adjustment portion 600 can be quickly determined by the scale lines, which is convenient to use.

[0068] For a possible embodiment, please refer to Figure 4 The accommodating portion 200 includes a main body 210 and a accommodating member 220 .

[0069] The main body 210 is roughly plate-shaped, for example, a square plate or a rectangular plate. In order to reduce the weight of the main body 210 and reduce the load on the connecting part 500, the main body 210 can be made of high-strength plastic, and holes can be set on the edge of the main body 210 to connect with the connecting part 500 through the holes.

[0070] The accommodating member 220 can be columnar, such as cylindrical, and the dimensions of the outer profile of the accommodating member 220 can be smaller than those of the outer profile of the main body 210, thereby reducing the weight of the entire accommodating portion 200. An accommodating cavity 221 is provided within the accommodating member 220 to accommodate the fan 20. Optionally, when the fan 20 is installed in the accommodating cavity 221, the fan 20 does not directly contact the main body 210. In other words, the depth of the accommodating cavity 221 along the Z-axis is greater than the width of the fan 20, thereby preventing the fan 20 from colliding with the main body 210.

[0071] The housing portion 200 is disposed on one side of the main body 210. Optionally, the housing portion 200 can be integrally molded with the main body 210 for ease of manufacturing. The housing portion 200 can also be detachably connected to the main body 210, allowing replacement of housing portions 200 of different sizes to accommodate fans 20 of various sizes without requiring a new mold.

[0072] In this embodiment, by connecting the main body 210 with the connecting portion 500 and accommodating the fan 20 , different functional components are clearly divided, the connection position of the accommodating portion 200 and the connecting portion 500 is rationalized, and the overall structure is relatively compact.

[0073] In a possible embodiment, a mounting seat 250 is provided on a sidewall of the container 220. Optionally, when the container 220 is cylindrical, the mounting seat 250 is provided on an outer cylindrical surface of the cylindrical container 220.

[0074] The clamping portion 300 is connected to the mounting base 250. Figure 5-6 For example, the clamping portion 300 may be a quick clamp, model GH-201, comprising a main body 310, a force-applying arm 320 and a handle 330, both rotatably mounted on the main body 310. The handle 330 is connected to the force-applying arm 320 via a connecting rod 340, together forming a four-link mechanism 340. The main body 310 is connected to the mounting base 250. When the handle 330 is moved upward along the Z-axis, the force-applying arm 320 moves away from the accommodating portion 200. When the handle 330 is moved downward along the Z-axis, the force-applying arm 320 moves away from the accommodating portion 200, causing the force-applying arm 320 to abut against the fan 20 housing and apply a pressing force. This pressing force maintains the motor mounted in the accommodating cavity 221.

[0075] It should be noted that the clamping portion 300 is not limited to a quick clamp, and a torsion spring can also be provided on the mounting seat 250. The torsion spring is rotatably provided on the mounting seat 250, one end of the torsion spring abuts against the mounting seat 250, and the other end of the torsion spring abuts against the outer casing of the fan 20 installed in the accommodating cavity 221, thereby fixing the fan 20 in the accommodating cavity 221.

[0076] In this embodiment, the mounting seat 250 is fixed on the side wall of the accommodating member 220 to provide an installation space for the clamping portion 300, so that the clamping portion 300 fixes the fan 20 in the accommodating cavity 221, thereby preventing the fan 20 from escaping from the accommodating cavity 221 during the vibration test.

[0077] Please refer to Figure 6 On the basis of the above embodiment, the force application point of the force application arm 320 is spaced apart from the axis point of the accommodating member 220, and the detection part 400 and the force application arm 320 are relatively arranged on both sides of the axis point.

[0078] The force application point refers to the contact point between the force application arm 320 and the housing of the fan 20 when the force application arm 320 provides a pressing force. It is a point on the axis of the force application arm 320 that contacts the fan 20.

[0079] The axis point refers to the center point of the receiving member 220 along its axis when the receiving member 220 is in a regular shape.

[0080] It can be understood that the pressing force can be decomposed into a force component along the Z-axis direction (this force component fixes the fan 20 to the container 220 ) and a force component along the X-axis direction, and the force component along the Z-axis direction is parallel to the axis of the container 220 .

[0081] When the force arm 320 abuts against the casing of the fan 20, since the above-mentioned force application point is at a certain distance from the center position of the container 220, the component force along the Z-axis direction is an eccentric force. Taking the axis point as the reference, this eccentric force will reduce the vibration amplitude of the fan 20 on the side where the axis point is close to the force application point, and increase the vibration amplitude of the fan 20 on the side where the axis point is away from the force application point.

[0082] At this time, because the detection unit 400 is set on the side of the axis point away from the force application point, the first characteristic value calculated by the vibration signal of the fan 20 collected by the detection unit 400 should be greater than the second characteristic value calculated by the actual vibration signal of the fan 20. If the first characteristic value is still less than the preset threshold, the fan 20 can be judged to be qualified.

[0083] In this embodiment, by limiting the positional relationship between the force application point and the axis point, the standard of the vibration test of the fan 20 can be improved, ensuring that qualified products flow out of the testing device 10.

[0084] In one possible example, the side wall of the container 220 is further provided with a first opening 230. The first opening 230 penetrates the side wall of the container 220, thereby connecting the accommodating cavity 221 with the outside of the container 220. When the fan 20 is installed in the accommodating cavity 221, the power cord of the fan 20 can be routed through the first opening 230. When the fan 20 needs to be removed from the container 220, a finger can be inserted into the accommodating cavity 221 through the first opening 230 to pull the fan 20 out of the accommodating cavity 221, which is more convenient.

[0085] In one possible example, the first opening 230 is disposed opposite the mounting seat 250. That is, the first opening 230 and the mounting seat 250 are disposed on opposite sides of the axis of the container 220. It is understood that because the mounting seat 250 is disposed on the outside of the container 220, when the fan 20 is not installed, the container 220 as a whole tilts toward the mounting seat 250. Since the mass of the fan 20 is greater than the mass of the mounting seat 250, when the fan 20 is installed, the container 220 tilts toward the fan 20. The provision of the first opening 230 can reduce the mass on one side of the fan 20, thereby achieving automatic balancing of the container 200 after the fan 20 is installed, eliminating the need to readjust the posture of the container 200 using the adjustment unit 600.

[0086] Optionally, the shape of the first opening 230 may be a regular quadrilateral.

[0087] In one possible example, the body 210 is provided with a second opening 240 that passes through the body 210 and communicates with the accommodating cavity 221. It is understood that multiple second openings 240 may be provided, and the second openings 240 can reduce the overall weight of the body 210 to reduce the load on the connecting portion 500.

[0088] Optionally, the shape of the second opening 240 can be circular, square, triangular, etc.

[0089] In one possible example, the detection unit 400 includes a vibration sensor, which is arranged on the second side of the main body 210, that is, the vibration sensor and the container 220 are arranged on opposite sides of the main body 210. It can be understood that when the fan 20 is installed to the container 220, it does not need to be affected by the sensor, and the overall layout is more reasonable.

[0090] Optionally, the model of the vibration sensor may be wdc36204-m.

[0091] In a possible example, the testing device 10 further includes a power supply control unit 700 .

[0092] When the fan 20 is installed in the accommodating portion 200, power needs to be supplied to the fan 20 to start the fan 20. In this embodiment, the power supply control unit 700 is connected to the support portion 100. The power supply control unit 700 can be installed on either the base 110 or the top plate 130. The cable of the fan 20 can be plugged into the power supply control unit 700, thereby electrically connecting the power supply control unit 700. The power supply control unit 700 can control the start and stop of the fan 20 by switching it on and off.

[0093] The above are merely optional embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included within the scope of the claims of the present application.

Claims

1. A testing device, characterized in that: include: Support part; a receiving portion connected to the supporting portion, the receiving portion being provided with an accommodating cavity, the accommodating cavity being used to at least partially accommodate the fan; a clamping portion connected to the accommodating portion, the clamping portion being used to fix the fan to the accommodating portion; A detection unit is connected to the accommodating unit and is used to collect a vibration signal of the fan.

2. The testing device according to claim 1, wherein: The supporting portion includes a base and a plurality of supporting members, and the plurality of supporting members are arranged at intervals on the base; the testing device also includes a connecting portion, and the accommodating portion is suspended on the supporting member via the connecting portion.

3. The testing device according to claim 2, wherein: The number of the supporting members is the same as the number of the connecting parts. There are two supporting members, and the two supporting members are arranged opposite to each other. The two sides of the accommodating part are respectively connected to the two supporting members via the connecting parts.

4. The testing device according to claim 2, wherein: The number of the supporting members is different from the number of the connecting parts; the supporting part further includes a top plate; the accommodating part is respectively connected to the supporting member and the top plate through the connecting part; the top plate, the base and the supporting member jointly define an operating space.

5. The testing device according to claim 4, wherein: The top plate is provided with a protruding structure, which extends from the top plate toward the base. The length of the protruding structure is shorter than the length of the supporting member, and the connecting portion is connected to the protruding structure.

6. The testing device according to claim 4, wherein: The top plate is provided with an observation hole, and along the arrangement direction of the support member, the accommodating portion is at least partially exposed from the observation hole.

7. The testing device according to any one of claims 2 to 6, characterized in that: The testing device further includes an adjusting portion, which is slidably disposed on the supporting member, and the connecting portion is connected to the supporting member via the adjusting portion.

8. The testing device according to claim 7, wherein: The adjusting part includes a ring, a locking piece and a protruding piece; the ring is sleeved on the supporting piece and can slide on the supporting piece; the locking piece is connected to the ring and is used to fix the ring to the supporting piece; the protruding piece is arranged on the outside of the ring and is used to connect with the connecting part.

9. The testing device according to any one of claims 2 to 6, wherein: The accommodating portion includes a main body and a accommodating member. The accommodating member is arranged on the main body. The accommodating cavity is arranged in the accommodating member. The main body is used to be connected to the connecting portion.

10. The testing device according to claim 9, wherein: A mounting seat is provided on the side wall of the accommodating member, the clamping portion is connected to the mounting seat, and the force arm of the clamping portion is used to abut against the fan housing and apply a pressing force, and the pressing force keeps the motor installed in the accommodating cavity.

11. The testing device according to claim 10, wherein: The force application point of the force application arm is spaced apart from the axis center of the accommodating member, and the detection portion and the force application arm are relatively arranged on both sides of the axis center.

12. The testing device according to claim 10, wherein: The side wall of the container is further provided with a first opening, and the first opening communicates the accommodating cavity with the outside of the container.

13. The testing device according to claim 12, wherein: The first opening is arranged opposite to the mounting seat.

14. The testing device according to claim 9, wherein: The body is provided with a second opening, which passes through the body and communicates with the accommodating cavity.

15. The testing device according to claim 9, wherein: The detection portion is arranged on a side of the body facing away from the accommodating member.

16. The testing device according to claim 1, wherein: The testing device further includes a power supply control unit connected to the supporting unit, and the power supply control unit is used to be electrically connected to the fan and control the start and stop of the fan.

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