Fan testing device

Abstract

The utility model relates to a fan testing device, which comprises a protective cover and a fan seat, the protective cover and / or the fan seat are / is movably arranged on a working platform, a fan to be tested is arranged on the fan seat, and the fan is arranged in the protective cover during testing. A travel switch and a trigger device which are matched with each other are correspondingly arranged in the protective cover and on the fan seat, the travel switch is connected with a contactor in series, and a contact of the contactor is connected into a circuit between the fan and a power supply. According to the utility model, the accident risk caused by misoperation of an operator can be effectively avoided, the test safety is improved, and the personal safety of the operator is protected.

Description

Technical Field

[0001] The utility model relates to the field of testing equipment technology, in particular to a fan testing device. Background Art

[0002] Before the fan leaves the factory or after a period of operation, it is necessary to conduct a balance test and a performance test on the fan. During the fan test, the fan impeller needs to be controlled to rotate at high speed. The impeller is prone to collision and scratches when rotating at high speed. At present, in order to improve the safety of fan testing, a protective cover is added outside the fan.

[0003] However, in some special cases, there is a risk of operator misoperation, especially for motor performance testers. Due to the delayed start-up characteristics during operation, there is time for accidents to occur, and improper operation will cause serious personnel safety accidents. Utility Model Content

[0004] The main technical problem solved by the utility model is to provide a fan testing device which can effectively avoid the accident risk caused by operator's misoperation, improve the test safety and protect the personal safety of the operator.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0006] A fan testing device comprises a protective cover and a fan seat, wherein the protective cover and / or the fan seat can be movably mounted on a working platform, and a fan to be tested is mounted on the fan seat. During the test, the fan is placed inside the protective cover, and travel switches and trigger devices that cooperate with each other are correspondingly arranged inside the protective cover and on the fan seat. The travel switch is connected in series with a contactor, and the contacts of the contactor are connected to the circuit between the fan and a power supply.

[0007] Furthermore, the travel switch is a normally open mechanical travel switch or a normally open photoelectric travel switch.

[0008] Furthermore, the protection cover comprises a frame, a protection net is mounted on the frame, and one side of the protection cover on the moving distance of the fan base is open or provided with an openable and closable door.

[0009] Furthermore, the lower edge of the protective net is lower than the lower edge of the fan after installation.

[0010] Furthermore, running wheels are installed on both sides of the bottom of the frame, and two tracks are arranged on the working platform, and the running wheels move along the tracks.

[0011] Furthermore, the frame has limiting bosses on both sides of the bottom, the limiting bosses abut against the side surface of one side of the track, and the limiting directions of the limiting bosses on both sides of the bottom of the frame are opposite.

[0012] Furthermore, the fan base includes a base and a support frame, the support frame is installed above the base, the fan to be tested is installed on the support frame, the base is installed on the working platform, a mounting platform is installed on the inner side of the protective cover, and travel switches and trigger devices that cooperate with each other are installed correspondingly on the base and the mounting platform.

[0013] Furthermore, the upper surface of the mounting platform and the upper surface of the base are on the same plane, and the travel switch and the trigger device are correspondingly mounted on the upper surface of the base and the upper surface of the mounting platform.

[0014] Furthermore, the base includes an upper base and a lower base, the support frame is fixedly mounted on the upper base, the lower base is fixedly mounted on the working platform, the length of the lower base is greater than the length of the protective cover, the upper base and the lower base are slidably connected via a sliding mechanism, and the travel switch is mounted on the upper base.

[0015] Furthermore, the sliding mechanism includes two parallel slide rails arranged on the upper surface of the lower base, and two groups of sliders extend downward from the bottom of the upper base. The sliders move along the slide rails. A transmission mechanism is installed between the upper base and the lower base, and the transmission mechanism is connected to the driving device.

[0016] To summarize the above, the utility model provides a fan testing device, in which a travel switch and a trigger device that cooperate with each other are arranged between the protective cover and the fan base. Only when the relative position relationship between the protective cover and the fan base meets the test requirements, that is, when the fan is completely placed inside the protective cover, the travel switch is triggered and the fan will be powered on and start running. This can completely avoid the risk of accidents caused by improper operation of the operator, improve the test safety, and protect the personal safety of the operator.

[0017] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0019] In the attached picture:

[0020] Figure 1 It is a schematic diagram of the structure of the test device of the utility model;

[0021] Figure 2 The utility model is a circuit diagram of a testing device.

[0022] In the figure:

[0023] Protective cover 1, frame 11, protective net 12, running wheel 13, track 14, fan base 2, base 21, upper base 211, lower base 212, support frame 22, fan 3, working platform 4, power supply 5, travel switch SQ6, trigger device 7, mounting table 8, tester 9.

[0024] It should be noted that the drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] like Figure 1 As shown, the utility model provides a fan testing device, including a protective cover 1 and a fan base 2, and a fan 3 to be tested is installed on the fan base 2. During the test, the fan 3 is completely placed inside the protective cover 1, and the protective cover 1 is used to isolate the fan 3 from external operators to protect the personal safety of the operators.

[0029] In order to facilitate the installation of the fan 3 and to facilitate the placement of the fan 3 inside the protective cover 1 during testing, the protective cover 1 and the fan base 2 are movably installed on the working platform 4, and the fan 3 is installed on the fan base 2 outside the protective cover 1, and then the fan 3 is placed inside the protective cover 1 by moving the protective cover 1 or the fan base 2. Of course, only the protective cover 1 can be movably installed on the ground, or only the fan base 2 can be movably installed on the ground.

[0030] In this embodiment, the working platform 4 is preferably the floor of a test workshop.

[0031] like Figure 1 and Figure 2 As shown, in this embodiment, a travel switch SQ6 and a trigger device 7 are provided in the protective cover 1 and on the fan base 2, respectively. The travel switch SQ6 is installed on the fan base 2, and the trigger device 7 is installed on the protective cover 1. The travel switch SQ6 is connected in series with the contactor KM1. The contact of the contactor KM1 is connected to the circuit between the fan 3 and the power supply 5. The power supply 5 can be a fan performance tester 9, and the fan performance tester 9 provides the required power for the operation of the fan 3. The travel switch SQ6 can also take a DC24V power supply from the tester 9.

[0032] When the relative position of the fan base 2 and the protective cover 1 meets the test requirements, that is, the relative movement between the fan base 2 and the protective cover 1 reaches the set stroke, the protective cover 1 is closed in place, and the fan 3 can be completely placed inside the protective cover 1, the trigger device 7 can trigger the travel switch SQ6, the travel switch SQ6 is energized, the interlock control contactor KM1 is energized, the circuit between the fan 3 and the tester 9 is connected, and the fan 3 is powered on and started. When the trigger device 7 does not trigger the travel switch SQ6, it is determined that the protective cover 1 has not been closed in place, and the fan 3 cannot be started if the protective cover 1 is not closed in place.

[0033] This embodiment, through the arrangement of the travel switch SQ6 and the trigger device 7, can ensure that the fan 3 will start to operate only when the relative position relationship between the protective cover 1 and the fan seat 2 meets the test requirements, that is, the protective cover 1 is closed in place and the fan 3 is completely placed inside the protective cover 1. When the fan 3 has not entered the protective cover 1, the travel switch SQ6 will not be triggered, and the power supply circuit between the fan 3 and the tester 9 will remain disconnected. At this time, even if the operator makes a mistake, the fan 3 will not start. In this way, the risk of accidents caused by improper operation of the operator can be completely avoided, the safety of the test device can be improved, and the personal safety of the operator can be protected.

[0034] In this embodiment, the travel switch SQ6 preferably adopts a normally open mechanical travel switch, and the trigger device 7 adopts a travel switch contact rod. After the fan base 2 moves into place, the travel switch contact rod triggers the travel switch SQ6, the contacts of the contactor KM1 are closed, the power supply circuit of the fan 3 is connected, and the fan 3 can start to operate.

[0035] In this embodiment, another embodiment is provided for the travel switch SQ6. The travel switch SQ6 is a normally open photoelectric travel switch, which is composed of a transmitting end and a receiving end. After the protective cover 1 is closed, the travel switch SQ6 receives a trigger signal, and the contact of the contactor KM1 is closed to connect the power supply circuit of the fan 3.

[0036] like Figure 1 As shown, in this embodiment, the protective cover 1 includes a frame 11, and a protective net 12 is installed on the frame 11. The frame 11 is welded by multiple vertical bars and multiple horizontal bars, and three upper, middle and lower horizontal bars are welded between each two adjacent vertical bars. The protective cover 1 is open on one side of the moving distance of the fan base 2. A layer of protective net 12 is installed on the three sides of the frame 11, and a layer of protective net 12 is also installed on the top surface of the frame 11. The protective net 12 adopts a metal net to improve the protection level of the protective net 12, and is fixed to the frame 11 by screws. Of course, an openable and closable door can also be set on one side of the moving distance of the fan base 2. The door also adopts a frame and a protective net structure, and is connected to the frame 11 through a hinge. The door can also adopt a push-pull structure, which can play a better protective role.

[0037] In this embodiment, preferably, the four sides of the protective net 12 are fixed to the vertical bars on both sides and the upper and middle horizontal bars by screws, and the lower edge of the protective net 12 is required to be lower than the lower edge of the fan 3 after installation to ensure the protective effect.

[0038] In this embodiment, for the structure in which the protective cover 1 can be movably installed on the ground, running wheels 13 are installed on both sides of the bottom of the frame 11, and two tracks 14 are provided on the working platform 4, and the running wheels 13 move along the tracks 14. In this way, the protective cover 1 can be easily and stably moved on the working platform 4, and the moving direction can be controlled.

[0039] In this embodiment, it is further preferred that downwardly protruding limiting bosses (not shown) are provided on both sides of the bottom of the frame 11, and the side surfaces of the limiting bosses abut against the side surface of one side of the track, and the limiting directions of the limiting bosses on both sides of the bottom of the frame 11 are opposite. This can further make the movement of the protective cover 1 more stable, without deflection, and ensure the safety of the protective cover 1 when moving.

[0040] In this embodiment, the fan base 2 includes a base 21 and a support frame 22, the support frame 22 is installed above the base 21, and the fan 3 to be tested is installed on the support frame 22. The main body of the support frame 22 is a square frame structure for installing the fan 3, and the lower half of the square frame is a triangular structure, which is conducive to making the overall structure of the support frame 22 more stable and ensuring the stability and safety of the fan 3 during operation.

[0041] In this embodiment, the base 21 is installed on the ground, and a mounting platform 8 is installed on the inner side of the protective cover 1. The mounting platform 8 moves synchronously with the protective cover 1. The travel switch SQ6 and the trigger device 7 that cooperate with each other are installed on the base 21 and the mounting platform 8. Specifically, the travel switch SQ6 is installed on the base 21, and the trigger device 7 is installed on the mounting platform 7. The mounting platform 8 is installed at the end of the travel of the fan base 2. When the fan base 2 moves to the position, or the protective cover 1 moves to the position, the trigger device 7 on the mounting platform 8 will contact the travel switch SQ6 on the fan base 2, thereby triggering the travel switch SQ6. Furthermore, the upper surface of the mounting platform 8 and the upper surface of the base 21 are on the same plane, and the travel switch SQ6 and the trigger device 7 are installed on the upper surface of the base 21 and the upper surface of the mounting platform 8, respectively, so that the travel switch SQ6 can be accurately triggered after moving into position.

[0042] In this embodiment, further, the base 21 includes an upper base 211 and a lower base 212, the support frame 22 is fixedly installed on the upper base 211, and the lower base 212 is fixedly installed on the ground. The length of the upper base 211 is smaller than the length of the upper base 212, and the upper base 212 and the lower base 212 are slidably connected by a sliding mechanism (not shown in the figure), and the limit switch SQ6 is installed on the upper surface of the upper base 211, and the upper base 212 drives the limit switch SQ6 to move along the lower base 212.

[0043] In this embodiment, further, the sliding mechanism includes two parallel slide rails arranged on the upper surface of the lower base 212, two sets of sliders extending downward from the bottom of the upper base 211, and the sliders move along the corresponding slide rails, and a transmission mechanism is installed between the upper base 211 and the lower base 212, and the transmission mechanism is connected to the driving device. The transmission mechanism can adopt a conventional gear rack transmission mechanism, a belt transmission mechanism, a screw transmission mechanism, a chain transmission mechanism, etc., and the driving device can be driven by a motor.

[0044] In this embodiment, the length of the lower base 212 is greater than the length of the protective cover 1, so that the moving stroke of the upper base 211 relative to the protective cover 1 can be increased. Regardless of the moving position of the protective cover 1, the operator can install the fan 3 on the outside of the protective cover 1, which is convenient for the operator to operate. The protective cover 1 can also be moved to the position of the lower base 212 first, and then the fan 3 can be moved toward the inside of the protective cover 1 by moving the upper base 211 until the trigger device 7 on the mounting platform 8 triggers the travel switch SQ6 on the upper base 211.

[0045] The operating steps of the fan test device are as follows:

[0046] 1. Install the fan 3 on the support frame 22.

[0047] 2. Move the protective cover 1 to a position close to the lower base 212 , and then move the upper base 211 toward the mounting platform 8 .

[0048] 3. Move the upper base 211 to the position of the mounting platform 8 so that the trigger device 7 on the mounting platform 8 triggers the travel switch SQ6 on the upper base 211 .

[0049] 4. Start the tester 9, start the fan 3, and perform a performance test on the fan 3.

[0050] The fan testing device provided by the utility model has the following advantages:

[0051] (1) The test device is provided with a travel switch and a trigger device that cooperate with each other between the protective cover and the fan base. Only when the relative position relationship between the protective cover and the fan base meets the test requirements, that is, when the fan is completely placed inside the protective cover, the travel switch is triggered and the fan is powered on and starts to operate. This can completely avoid the risk of accidents caused by improper operation of the operator, improve the safety of the test, and protect the personal safety of the operator.

[0052] (2) The overall structure of the test device is simple and its operation is reliable. The relative position of the fan and the protective cover can be adjusted by moving the protective cover and the fan base. The protective cover can be used to isolate the operator, effectively solving potential safety hazards.

[0053] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. A fan testing device, characterized in that: It includes a protective cover and a fan seat. The protective cover and / or the fan seat can be movably installed on the working platform. The fan to be tested is installed on the fan seat. During the test, the fan is placed inside the protective cover. Travel switches and trigger devices that cooperate with each other are correspondingly arranged inside the protective cover and on the fan seat. The travel switch is connected in series with a contactor, and the contacts of the contactor are connected to the circuit between the fan and the power supply.

2. The fan testing device according to claim 1, characterized in that: The travel switch is a normally open mechanical travel switch or a normally open photoelectric travel switch.

3. The fan testing device according to claim 1 or 2, characterized in that: The protection cover comprises a frame, a protection net is installed on the frame, and one side of the protection cover on the moving distance of the fan base is open or provided with an openable and closable door.

4. The fan testing device according to claim 3, characterized in that: The lower edge of the protective net is lower than the lower edge of the fan after installation.

5. The wind turbine testing device according to claim 3, characterized in that: Running wheels are installed on both sides of the bottom of the frame, and two tracks are arranged on the working platform, and the running wheels move along the tracks.

6. The wind turbine testing device according to claim 5, characterized in that: The frame has limiting bosses on both sides of the bottom, the limiting bosses abut against the side surface of one side of the track, and the limiting directions of the limiting bosses on both sides of the bottom of the frame are opposite.

7. The wind turbine testing device according to claim 1 or 2, characterized in that: The fan base includes a base and a support frame, the support frame is installed above the base, the fan to be tested is installed on the support frame, the base is installed on the working platform, a mounting platform is installed on the inner side of the protective cover, and travel switches and trigger devices that cooperate with each other are installed correspondingly on the base and the mounting platform.

8. The wind turbine testing device according to claim 7, characterized in that: The upper surface of the mounting platform and the upper surface of the base are on the same plane, and the travel switch and the trigger device are correspondingly mounted on the upper surface of the base and the upper surface of the mounting platform.

9. The wind turbine testing device according to claim 7, characterized in that: The base includes an upper base and a lower base, the support frame is fixedly mounted on the upper base, the lower base is fixedly mounted on the working platform, the length of the lower base is greater than the length of the protective cover, the upper base and the lower base are slidably connected via a sliding mechanism, and the travel switch is mounted on the upper base.

10. The wind turbine testing device according to claim 9, characterized in that: The sliding mechanism includes two parallel slide rails arranged on the upper surface of the lower base, two sets of sliding blocks extending downward from the bottom of the upper base, and the sliding blocks move along the slide rails. A transmission mechanism is installed between the upper base and the lower base, and the transmission mechanism is connected to the driving device.

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