CN210218190U - Cleaning fan manufacturing and assembling quality detection device - Google Patents
Cleaning fan manufacturing and assembling quality detection device Download PDFInfo
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- CN210218190U CN210218190U CN201920993931.4U CN201920993931U CN210218190U CN 210218190 U CN210218190 U CN 210218190U CN 201920993931 U CN201920993931 U CN 201920993931U CN 210218190 U CN210218190 U CN 210218190U
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Abstract
The utility model provides a cleaning fan manufacturing and assembling quality detection device, which comprises an airflow suite, a detection mechanism and a control system; the air flow suite is arranged at the air outlet of the fan and used for changing the air flow at the air outlet of the fan; the detection mechanism is used for measuring an air speed signal of air flow at an air outlet of the air flow suite, and a sound signal and a vibration signal generated when the fan runs; the control system is connected with the detection mechanism and judges whether the quality of the fan is qualified or not according to the wind speed signal, the sound signal and the vibration signal. The utility model discloses at cleaning fan air outlet department installation air current external member, change the air current state, the wind speed signal of detection mechanism measurement air current external member air outlet department air current, the sound signal and the vibration signal that produce when the fan operates, control system compares the wind speed signal, sound signal and the vibration signal of gathering with the quality evaluation index of predetermineeing respectively, judges whether qualified fan manufacturing assembly quality, improves the detection precision of cleaning fan assembly quality.
Description
Technical Field
The utility model belongs to agricultural harvesting machine field, in particular to clean fan and make assembly quality detection device.
Background
The assembly body structure is a common structure in mechanical structures, a plurality of parts are combined into the mechanical structure meeting the requirements through assembly, and the assembly quality and the performance after assembly have important influence on the quality of mechanical products. Before entering the market, in order to ensure the quality of the assembled product, the quality of the assembled product is generally detected and debugged. For the combine harvester in the field of agricultural machinery, the operation performance and the working reliability of a cleaning fan in a cleaning device are related to the performance index and the working reliability of the whole combine harvester. The cleaning fan in the combine harvester mainly comprises parts such as blades, a volute, a bearing, a blade mounting shaft and the like, and when the assembly quality of the parts is unqualified, the operation performance of the cleaning fan is difficult to guarantee, so that the operation effect of the whole combine harvester is influenced. Therefore, quality detection must be carried out in the manufacturing and assembling links of the cleaning fan. At present, in the actual production process of domestic combine harvesters, the assembly of cleaning fans is generally manually assembled, the quality of the assembly is greatly different due to different manual techniques in manual assembly, and the quality detection of the cleaning fans is stopped when workers use simple measuring tools for detection, so that the reliability in the market is low, and therefore, a device and a method for detecting and reflecting the manufacturing and assembling quality of the cleaning fans in the production process of the cleaning fans are urgently needed.
The utility model with publication number CN109443420A discloses a combine harvester fan quality detection device and a detection method thereof, which comprises a detection system; detection system includes angle sensor, airflow detection device, vibration detection device, torque sensor, temperature sensor and control system, according to the moment of torsion, the air outlet inclination, clean centrifugal fan installation angle, vibration, operating temperature, centrifugal fan assembly quality is cleaned in wind speed size and direction judgement, this patent provides a clean fan quality detection system, but this patent application direct measurement wind speed at the fan air outlet, the air current signal that detects has the limitation, only can reflect the quality under the normal operating condition of fan, the quality assembly condition under the difference of the air current signal in the room of cleaning can not be reflected, it is low to detect the precision.
SUMMERY OF THE UTILITY MODEL
In view of the technical problem, the utility model provides a cleaning fan manufacturing assembly quality detection device installs the air current external member at cleaning fan air outlet, changes the air current state, and detection mechanism measures the wind speed signal of air current, the sound signal and the vibration signal that produce when the fan operates of air current external member air outlet, and control system compares the wind speed signal, the sound signal and the vibration signal of gathering respectively with the quality evaluation index of predetermineeing, judges whether fan manufacturing assembly quality is qualified; through the airflow suite, the airflow state is changed, the quality assembly condition of the fan under the airflow signal difference is reflected, and the detection precision of the cleaning fan assembly quality is improved.
The utility model provides a technical scheme that its technical problem adopted is: a cleaning fan manufacturing and assembling quality detection device comprises
The air flow sleeve is arranged at the air outlet of the fan and used for changing the air flow at the air outlet of the fan;
the detection mechanism is used for measuring an air speed signal of air flow at an air outlet of the air flow sleeve, and a sound signal and a vibration signal generated when the fan operates; and
and the control system is connected with the detection mechanism, compares the wind speed signal, the sound signal and the vibration signal with preset values respectively, and judges whether the quality of the fan is qualified.
In the above scheme, the airflow suite is one or a combination of a transverse airflow suite, a longitudinal airflow suite, a left offset airflow suite, a right offset airflow suite, a linear airflow suite and a nonlinear airflow suite.
Furthermore, the transverse airflow suite is an air outlet which transversely contracts and is symmetrical on two sides; the longitudinal airflow suite is longitudinally contracted at the air outlet and is symmetrical on two sides.
Furthermore, the left offset airflow suite is used for transversely offsetting and contracting the left side of the air outlet; the right offset airflow suite is used for transversely offsetting and contracting the right side of the air outlet;
furthermore, the linear airflow suite is in a folded line shape, and the air outlet is not contracted; the nonlinear airflow suite is wavy, and the air outlet is not contracted.
In the above aspect, the detection mechanism includes
The air speed sensor is arranged at an air outlet of the airflow suite and used for detecting an air speed signal of the airflow of the fan;
the sound sensor is arranged at the air outlet of the fan and used for detecting a sound signal generated when the fan operates; and
the vibration sensor is installed on the cleaning fan and used for detecting vibration signals of the cleaning fan.
Furthermore, the vibration sensors are multiple and are respectively arranged in the XYZ three directions of the cleaning fan three-dimensional coordinate system and used for detecting vibration signals of the cleaning fan in the three directions.
In the scheme, the test bed further comprises a test bed body;
the test bed body comprises a cleaning fan, a power driving mechanism and a rack; cleaning fan and power drive mechanism install respectively in the frame, power drive mechanism is connected with cleaning fan.
Furthermore, the frame is a frame formed by a plurality of cross beams and a plurality of longitudinal beams;
the cleaning fan comprises a cleaning fan, a fan volute 1, a power driving mechanism, a bearing seat, a side plate and a power driving mechanism, wherein the fan volute 1 of the cleaning fan is fixedly arranged on a longitudinal beam at the upper part of a rack; a motor output shaft of the power driving mechanism is provided with a driving belt wheel, the driving belt wheel is connected with a driven belt wheel on a blade central shaft, a cross-shaped bracket is arranged on the blade central shaft, and the cross-shaped bracket is connected with a fan blade; the bottom of the frame is provided with a control box which is respectively connected with the cleaning fan and the power driving mechanism.
In the above aspect, the control system includes
The signal acquisition module is connected with the detection mechanism and used for receiving signals of the detection mechanism;
the signal processing module is connected with the signal acquisition module and is used for filtering and denoising the vibration signal and the sound signal received by the signal acquisition module; and
and the judging module is connected with the signal processing module and the signal acquisition module and is used for comparing the wind speed signal, the vibration signal and the sound signal with preset values respectively and judging whether the quality of the fan is qualified or not.
A detection method for a cleaning fan manufacturing and assembling quality detection device comprises the following steps:
through an airflow suite installed at a fan air outlet of the cleaning fan), the airflow at the fan air outlet is changed; measuring a wind speed signal of airflow at an air outlet of the airflow suite, a sound signal and a vibration signal generated when the fan operates through a detection mechanism; the control system is connected with the detection mechanism, and compares the collected wind speed signal, the collected sound signal and the collected vibration signal with preset quality evaluation indexes respectively to judge whether the quality of the fan is qualified.
In the scheme, the type of a single or combined airflow suite arranged at the air outlet of the fan is changed, so that a detected airflow signal is changed correspondingly, the detection mechanism detects airflow signals in different airflow suites respectively and transmits the airflow signals to the control system, and the control system compares the airflow signals in the different airflow suites with a preset value and judges whether the assembly quality of the fan is qualified or not.
In the above scheme, the determining of the quality evaluation index specifically includes the following steps:
screening qualified cleaning fans as a reference: selecting cleaning fans with part of qualified assembly quality inspection as qualified fans of quality evaluation references from cleaning fans of the same batch to be inspected;
selecting the airflow suite and arranging a detection mechanism: selecting a required airflow suite and determining the installation position of the sensor;
determining a quality evaluation index: the control system collects the wind speed signal, the sound signal and the vibration signal of the qualified fan, repeats the operation for a plurality of times, and respectively takes the average value of the wind speed signal, the sound signal and the vibration signal as a preset quality evaluation index for carrying out quality detection on the residual cleaning fan.
Further, the step of remaining cleaning fans for quality detection specifically comprises:
and the control system collects the wind speed signal, the sound signal and the vibration signal of each residual cleaning fan, compares the collected signals with preset quality evaluation indexes, and judges whether the quality of the cleaning fan is qualified.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model designs an air current external member, at cleaning fan air outlet department installation air current external member, change the air current state, detection mechanism measures the wind speed signal of air current external member air outlet department, the sound signal and the vibration signal that produce when the fan operates, control system will gather wind speed signal, sound signal and vibration signal respectively with the quality evaluation index of presetting contrast, judge whether fan manufacturing assembly quality is qualified; through the airflow suite, the airflow state is changed, the quality assembly condition of the fan under the airflow signal difference is reflected, and the detection precision of the cleaning fan assembly quality is improved.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is an axonometric view of a cleaning fan manufacturing and assembling quality detecting device according to an embodiment of the invention;
fig. 2 is a schematic view of an airflow assembly according to an embodiment of the present invention, wherein fig. 2(a) is a longitudinal airflow assembly, and fig. 2(b) is a transverse airflow assembly;
fig. 3 is a schematic view of an embodiment of the present invention, wherein fig. 3(a) is a left offset airflow assembly and fig. 3(b) is a right offset airflow assembly;
fig. 4 is a schematic view of an airflow assembly according to an embodiment of the present invention, wherein fig. 4(a) is a non-linear airflow assembly, and fig. 4(b) is a linear airflow assembly;
fig. 5 is a schematic view of an airflow assembly according to an embodiment of the present invention, wherein fig. 5(a) is a combination of a transverse airflow assembly and a nonlinear airflow assembly, and fig. 5(b) is a combination of a transverse airflow assembly and a linear airflow assembly;
fig. 6 is a schematic view of a sensor mounting position according to an embodiment of the present invention;
FIG. 7 is a schematic structural view of a cleaning fan according to an embodiment of the present invention;
FIG. 8 is a left side view of the cleaning fan manufacturing assembly quality detecting apparatus according to an embodiment of the present invention;
FIG. 9 is a schematic view of the connection between the cleaning fan and the frame according to an embodiment of the present invention;
FIG. 10 is a connection block diagram of an embodiment of the present invention;
fig. 11 is a detection flowchart according to an embodiment of the present invention.
In the figure: 1-a volute; 2-a blade; 3-blade mounting shaft, 4-bearing seat; 5-a driven pulley; 6-a belt; 7-a motor; 8-driving belt wheel; 9-an airflow suite; 10-a wind speed sensor; 11-a computer; 12-a data acquisition card; 13-a sound sensor; 14-a power switch; 15-a vibration sensor; 16-a control box; 17-a frame; 101-a fan air outlet; 201-a cross bracket; 401-side plate; 1701-beam; 1702 — longitudinal beams.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "axial", "radial", "vertical", "horizontal", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Fig. 1 shows a preferred embodiment of the cleaning fan manufacturing assembly quality detection device according to the present invention, which comprises an airflow suite 9, a detection mechanism and a control system; the air flow suite 9 is installed at the fan air outlet 101 and used for changing the air flow at the fan air outlet 101; the detection mechanism is used for measuring the air speed signal of the air flow at the air outlet of the air flow sleeve 9, and the sound signal and the vibration signal generated when the fan operates, the control system is connected with the detection mechanism, and the control system judges whether the quality of the fan is qualified or not according to the air speed signal, the sound signal and the vibration signal.
Preferably, according to the embodiment of the present invention, the airflow assembly 9 may be one or a combination of a lateral airflow assembly, a longitudinal airflow assembly, a left offset airflow assembly, a right offset airflow assembly, a linear airflow assembly, and a non-linear airflow assembly. The airflow suite 9 is supported by the auxiliary supporting component, is installed at the fan air outlet 101, and can be detached and replaced.
Preferably, according to the embodiment of the present invention, as shown in fig. 2(a), the longitudinal airflow sleeve member is a longitudinally contracted air outlet, and has two symmetrical sides; as shown in fig. 2(b), the transverse airflow sleeve is transversely contracted at the air outlet and is symmetrical on two sides.
Firstly, installing the longitudinal airflow suite as shown in fig. 2(a) at an air outlet 101 of a fan, and measuring the air speed at the air outlet of the airflow suite 9; and (3) installing the transverse airflow suite shown in the figure 2(b) at the air outlet 101 of the fan, and measuring the air speed at the air outlet of the airflow suite 9. The design idea of the air flow suite is to amplify the air flow signal, so that originally discrete air flow is not discrete, and the upper side plate and the lower side plate of the air outlet of the longitudinal air flow suite shrink inwards to amplify the air flow signal in the vertical direction; the left side plate and the right side plate of the air outlet of the transverse airflow suite contract inwards to amplify the airflow signal in the horizontal direction. The phenomenon of uneven wind speed directly measured at the wind outlet of the fan is solved by amplifying the airflow signals in the two modes, so that the wind speed is conveniently measured, and more accurate data is provided for the detection of the assembly quality.
Preferably, according to the embodiment of the present invention, as shown in fig. 3(a), the left offset airflow suite is a lateral offset contraction on the left side of the air outlet; as shown in fig. 3(b), the right offset airflow sleeve is transversely offset and contracted at the right side of the air outlet.
Firstly, installing the left offset airflow suite shown in the figure 3(a) at an air outlet 101 of a fan, and measuring the air speed of an air outlet at the left side of the airflow suite 9; and (c) installing the right offset airflow suite shown in the figure 3(b) at the air outlet 101 of the fan, and measuring the air speed of the air outlet at the right side of the airflow suite 9. The design idea of the air flow suite is to detect the difference of air flow signals on the left side and the right side of the air outlet of the fan, the left side plate of the air outlet of the left offset air flow suite is unchanged, and the right side plate of the air outlet of the left offset air flow suite contracts inwards, so that the air flow signals are amplified on the left side of the air outlet; the right side plate of the air outlet of the right offset air flow suite is unchanged, and the left side plate contracts inwards, so that the air flow signal is amplified on the right side of the air outlet. Through signal amplification in the two modes, comparing signal data in the two modes, and if data measured by the left air outlet is different from data measured by the right air outlet, the problem of assembly quality on the left side and the right side is indicated; if the data measured by the left air outlet and the data measured by the right air outlet are compared with the preset values and within the error allowable range, it is indicated that the assembly quality of the left side and the right side is not in a problem, and if the data measured by the left air outlet and the data measured by the right air outlet are not within the error allowable range, the assembly quality of the left side and the right side is unqualified.
Preferably, according to the embodiment of the present invention, as shown in fig. 4(a), the nonlinear airflow sleeve is wavy, and the air outlet does not shrink; as shown in fig. 4(b), the linear airflow member is in a zigzag shape, and the air outlet is not contracted.
Firstly, mounting a nonlinear airflow suite shown in the figure 4(a) at an air outlet 101 of a fan, and measuring the air speed of an air outlet of an airflow suite 9; then, the linear airflow suite shown in fig. 4(b) is installed at the fan outlet 101, and the wind speed at the outlet of the airflow suite 9 is measured. The design idea of the air flow suite is that the path of the air flow has influence on the air flow signal, and the design path of the nonlinear air flow suite is nonlinear, so that the air flow flows under the path with the changed slope; the design path of the linear airflow assembly is linear, so that the airflow flows in a path with a constant slope. Analyzing the influence of the two airflow flowing modes on the airflow signal, wherein when the airflow flowing direction changes suddenly, the airflow changes quickly and the airflow loss is large; when the gas flow changes slowly, the gas flow loss is small, under the same condition, the data measured by the gas flow and the gas flow loss are compared with the data of a reference fan, namely a preset value, respectively, and if the difference of the first data is obvious, the first data is selected as the basis for reflecting the assembly quality. If the second data is obvious in difference, the second data is selected as a basis for reflecting the assembly quality, so that the assembly quality of the fan can be reflected more accurately.
Preferably, according to the embodiment of the present invention, a combination of the lateral air flow kit and the non-linear air flow kit is shown in fig. 5(a), and a combination of the lateral air flow kit and the linear air flow kit is shown in fig. 5 (b).
Firstly, installing the combination of the transverse airflow suite and the nonlinear airflow suite shown in the figure 5(a) at the air outlet 101 of the fan, and measuring the air speed at the air outlet of the airflow suite 9; then, the combination of the longitudinal airflow suite and the linear airflow suite shown in fig. 5(b) is installed at the fan outlet 101, and the wind speed at the outlet of the airflow suite 9 is measured. The design idea of the gas flow kit in this group is the combination of the path influence and the amplification effect, and in order to detect the difference of signal amplification under the same amplification effect after passing through different paths. Through the amplification of the airflow signals under the two different paths, the influence of the same amplification effect of the airflow signals under the different paths on the assembly quality is detected, under the condition, the measured data is compared with the data of the embodiment 3, the fact that under the different paths, the influence of the amplification effect on the sudden change of the airflow flowing direction is small, and the influence on the slow change of the airflow flowing direction is large is shown, the amplification effect of the embodiment 1 is also verified, the originally discrete airflow is not dispersed, and the phenomenon that the wind speed is not uniform and is directly measured at the wind outlet of the fan is solved.
Preferably, according to the embodiment of the present invention, the detecting mechanism includes a wind speed sensor 10, a sound sensor 13, and a vibration sensor 15; the wind speed sensor 10 is arranged on the outer side of the air outlet of the airflow suite 9 through a magnetic seat and is used for detecting a wind speed signal of the airflow of the fan; the sound sensor 13 is arranged near the fan air outlet 101 and used for detecting a sound signal generated when the fan operates; the vibration sensor 15 is installed on the cleaning fan and used for detecting vibration signals of the cleaning fan. Preferably, the vibration sensors 15 are respectively installed in the three directions of XYZ of the cleaning fan three-dimensional coordinate system, and are used for detecting vibration signals in the three directions of the cleaning fan, and obtaining a vibration signal value in the direction with the most obvious vibration, and comparing the vibration signal value with an evaluation index, so that the detection precision is improved. Fig. 6 is a schematic view showing a sensor mounting position.
Preferably, according to the embodiment of the utility model, the test bed further comprises a test bed body; the test bed body comprises a cleaning fan, a power driving mechanism and a rack 17; cleaning fans and power driving mechanisms are respectively installed on the frame 17, and the power driving mechanisms are connected with the cleaning fans.
The frame 17 is designed according to the type and the appearance of the cleaning fan, preferably, according to the embodiment 1 of the utility model, the frame 17 is a frame formed by a plurality of cross beams 1701 and a plurality of longitudinal beams 1702;
as shown in fig. 7, the cleaning fan includes a scroll casing 1, a vane 2, a vane center shaft 3, a bearing housing 4, and a driven pulley 5.
As shown in fig. 8 and 9, the fan volute 1 of the cleaning fan is fixedly mounted on the upper longitudinal beam 1702 of the frame 17. The power driving mechanism comprises a belt 6, a motor 7 and a driving belt wheel 8; a motor 7 of the power driving mechanism is fixed on a cross beam 1701 at the bottom of the frame 17, a blade central shaft 3 of the cleaning fan is provided with a bearing and a bearing seat 4, the bearing seat 4 is installed on a side plate 401, and the side plate 401 is installed on the frame 17; an output shaft of a motor 7 of the power driving mechanism is provided with a driving belt wheel 8, the driving belt wheel 8 is connected with a driven belt wheel 5 on the blade central shaft 3, a cross-shaped support 201 is arranged on the blade central shaft 3, and the cross-shaped support 201 is connected with the fan blade 2; the bottom of the frame 17 is provided with a control box 16, a power switch and a fan rotating speed adjusting switch are arranged in the control box 16, and the control box 16 is respectively connected with a cleaning fan and a power driving mechanism.
Preferably, according to the embodiment of the present invention, as shown in fig. 10, the control system includes a signal acquisition module, a signal processing module and a judgment module; the signal acquisition module is connected with the detection mechanism and used for receiving signals of the detection mechanism, and preferably, the signal acquisition module is a data acquisition card 12; the signal processing module is connected with the signal acquisition module and is used for filtering and denoising the vibration signal and the sound signal received by the signal acquisition module; the judging module is connected with the signal processing module and the signal acquisition module and used for respectively comparing the wind speed signal, the vibration signal and the sound signal with preset values and judging whether the quality of the fan is qualified or not. The signal processing module and the determination module may be integrated in the computer 11.
A detection method for a cleaning fan manufacturing and assembling quality detection device comprises the following steps:
installing the airflow suite 9 at a fan air outlet 101; before detection, whether motion interference exists between a fan blade 2 of a detected fan and a volute 1 is firstly checked, then a motor 7 is started, a detection mechanism is electrified, and the detection mechanism measures a wind speed signal of airflow at an air outlet of an airflow suite 9, and a sound signal and a vibration signal generated when the fan runs; and the computer 11 starts to operate, the acquired data is stored to prepare for later-stage data analysis, and the control system compares the acquired wind speed signal, the acquired sound signal and the acquired vibration signal with preset quality evaluation indexes respectively to judge whether the quality of the fan is qualified.
The type of the single or combined airflow suite 9 installed at the air outlet 101 of the fan is changed, so that airflow detection conditions are changed, detected airflow signals are changed correspondingly, the detection mechanism detects the airflow signals in different airflow suites 9 respectively and transmits the airflow signals to the control system, and the control system compares the airflow signals in the different airflow suites 9 with preset values to judge the assembly quality difference of the fan.
The quality evaluation index determination specifically comprises the following steps:
screening qualified cleaning fans as a reference: selecting cleaning fans with part of qualified assembly quality inspection as qualified fans of quality evaluation references from cleaning fans of the same batch to be inspected;
selecting the airflow suite 9 and arranging the detection mechanism: selecting a required airflow suite 9 and determining the installation position of the sensor;
determining a quality evaluation index: the control system collects the wind speed signal, the sound signal and the vibration signal of the qualified fan, repeats the operation for a plurality of times, and respectively takes the average value of the wind speed signal, the sound signal and the vibration signal as a preset quality evaluation index for carrying out quality detection on the residual cleaning fan.
The steps of detecting the quality of the residual cleaning fan are as follows:
and the control system collects the wind speed signal, the sound signal and the vibration signal of each residual cleaning fan, compares the collected signals with preset quality evaluation indexes, and judges whether the quality of the cleaning fan is qualified.
As shown in fig. 11, the detection steps of the cleaning fan manufacturing and assembling quality detection device are as follows:
1. selecting a part of fans with qualified assembly quality inspection as reference,
in the same batch of cleaning fans to be inspected, 10% of the fans in the batch are selected for manual measurement and detection, including assembly gaps of the edges of the volute 1 and the fan blades 2, assembly angles of the fan blades 2, coaxiality of the bearings and the shaft and the like, and the fans meeting the detection standards are used as qualified fans of quality evaluation references.
2. Selecting the airflow suite 9 and arranging the detection mechanism
Selecting a required airflow suite 9 and determining the installation position of the sensor, and specifically comprises the following steps:
2.1 establishing an auxiliary frame 17 and an airflow sleeve 9 according to the outline dimension of the fan to be tested, wherein the frame 17 is used for supporting the whole fan assembly body, namely a required test bed frame; the airflow assembly 9 is used to amplify the measured signal or to make a specific change in the measured signal by changing the airflow assembly. Wherein the frame 17 is such that the additional influence on each cleaning fan to be tested is the same, without introducing extra measurement errors.
2.2, determining the installation position of a sensor, wherein the installed sensor comprises a wind speed sensor 10, a sound sensor 13 and a vibration sensor 15, when an airflow signal is measured, sleeving an airflow sleeve 9 at a fan air outlet 101, and the airflow sleeve 9 is supported by an auxiliary supporting component and can be detached and replaced; the wind speed sensor 10 passesThe magnetic seat is arranged outside the air outlet of the airflow suite; when measuring vibration, the vibration sensors 15 are respectively installed in XYZ three directions of a cartesian coordinate system of the fan; when measuring the sound signal, the sound sensor 13 is arranged around the fan outlet 101. The measured wind speed signal, vibration signal and sound signal are transmitted to the computer 11 through the data acquisition card 12 and respectively marked as X1，X2And X3Detecting and judging whether the quality problem exists or not through the computer 11;
2.3 determining the qualified fan in the step 1 according to the sensor and the arrangement position determined in the step 2.2, collecting data of the wind speed sensor 10, the sound sensor 13 and the vibration sensor 15, repeating the data for a plurality of times, taking an average value as a reference value, and respectively recording the reference value as a wind speed sensor reference value A, a vibration sensor reference value B and a sound sensor reference value C as corresponding quality evaluation indexes;
3. carry out batch detection to cleaning fans on production line
According to the detection environment established in the step 2, the same detection conditions are used for detecting the remaining clear fans of the same batch in the same detection method determined in the step 2.2;
4. and (3) comparing the detection data obtained in the step (3) with the evaluation indexes determined in the step (2.3), and determining whether the assembly quality of the cleaning fan is qualified or not by comparing the data of the detection data and the evaluation indexes.
If the cleaning fan is unqualified in detection and assembly quality, the installation position of the sensor and the measured data of the sensor can also provide data reference for analyzing the problem of the assembly quality of the fan.
It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.
The above detailed description is only for the purpose of illustrating the practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the technical spirit of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. A cleaning fan manufacturing and assembling quality detection device is characterized by comprising
The air flow kit (9), the air flow kit (9) is installed at the fan air outlet (101) and used for changing the air flow at the fan air outlet (101);
a detection mechanism comprising a wind speed sensor (10), a sound sensor (13) and a vibration sensor (15); the wind speed sensor (10) is arranged at an air outlet of the airflow suite (9) and is used for detecting a wind speed signal of the fan airflow; the sound sensor (13) is arranged at the air outlet (101) of the fan and used for detecting a sound signal generated when the fan operates; the vibration sensor (15) is arranged on the cleaning fan and used for detecting the vibration signal of the cleaning fan; and
and the control system is connected with the detection mechanism, compares the wind speed signal, the sound signal and the vibration signal with preset values respectively, and judges whether the quality of the fan is qualified.
2. A cleaning fan manufacturing assembly quality detection apparatus according to claim 1, characterized in that the airflow suite (9) is one or a combination of a lateral airflow suite, a longitudinal airflow suite, a left offset airflow suite, a right offset airflow suite, a linear airflow suite, a non-linear airflow suite.
3. A cleaning fan manufacturing assembly quality detecting device according to claim 2, characterized in that the transverse airflow suite is transversely contracted at the air outlet and is bilaterally symmetrical; the longitudinal airflow sleeve part is provided with an air outlet which is longitudinally contracted and is symmetrical on two sides;
the left offset airflow suite is used for transversely offsetting and contracting the left side of the air outlet; the right offset airflow suite is used for transversely offsetting and contracting the right side of the air outlet;
the linear airflow suite is in a folded line shape, and the air outlet is not contracted; the nonlinear airflow suite is wavy, and the air outlet is not contracted.
4. A cleaning fan manufacturing assembly quality detecting apparatus according to claim 1, characterized in that a plurality of vibration sensors (15) are installed in the three XYZ directions of the cleaning fan three-dimensional coordinate system, respectively, for detecting vibration signals of the cleaning fan in the three directions.
5. A cleaning fan manufacturing assembly quality detecting device according to claim 1, characterized by further comprising a test stand body;
the test bed body comprises a cleaning fan, a power driving mechanism and a rack (17); cleaning fans and power driving mechanisms are respectively installed on the machine frame (17), and the power driving mechanisms are connected with the cleaning fans.
6. A cleaning fan manufacturing assembly quality detection apparatus according to claim 5, characterized in that the frame (17) is a frame formed by a plurality of cross beams (1701) and a plurality of longitudinal beams (1702);
the cleaning fan is characterized in that a fan volute (1) of the cleaning fan is fixedly arranged on an upper longitudinal beam (1702) of a rack (17), a motor (7) of a power driving mechanism is fixed on a cross beam (1701) at the bottom of the rack (17), a blade central shaft (3) of the cleaning fan is provided with a bearing and a bearing seat (4), the bearing seat (4) is arranged on a side plate (401), and the side plate (401) is arranged on the rack (17); an output shaft of a motor (7) of the power driving mechanism is provided with a driving belt wheel (8), the driving belt wheel (8) is connected with a driven belt wheel (5) on the blade central shaft (3), a cross-shaped support (201) is arranged on the blade central shaft (3), and the cross-shaped support (201) is connected with a fan blade (2); the bottom of the frame (17) is provided with a control box (16), and the control box (16) is respectively connected with a cleaning fan and a power driving mechanism.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920993931.4U CN210218190U (en) | 2019-06-28 | 2019-06-28 | Cleaning fan manufacturing and assembling quality detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920993931.4U CN210218190U (en) | 2019-06-28 | 2019-06-28 | Cleaning fan manufacturing and assembling quality detection device |
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| CN210218190U true CN210218190U (en) | 2020-03-31 |
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| CN201920993931.4U Expired - Fee Related CN210218190U (en) | 2019-06-28 | 2019-06-28 | Cleaning fan manufacturing and assembling quality detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307174A (en) * | 2019-06-28 | 2019-10-08 | 江苏大学 | A kind of cleaning fan manufacture assembling quality detection device and method |
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- 2019-06-28 CN CN201920993931.4U patent/CN210218190U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307174A (en) * | 2019-06-28 | 2019-10-08 | 江苏大学 | A kind of cleaning fan manufacture assembling quality detection device and method |
| CN110307174B (en) * | 2019-06-28 | 2024-03-19 | 江苏大学 | Device and method for detecting manufacturing and assembling quality of cleaning fan |
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