Special device for vibration test of small fan

Abstract

A special device for a vibration test of a small fan comprises a main frame with a box-shaped structure, an installation frame is arranged in the main frame and divides the interior of the main frame into a test area and a control area, and a rapid clamping mechanism is arranged on the installation frame and used for rapidly clamping a fan installation plate. A to-be-tested fan is fixedly mounted on the fan mounting plate, the to-be-tested fan is electrically connected with the host in the test area through an electric connecting wire, a plurality of safety protection doors are further arranged on the outer side of the host frame, a position switch is arranged at the rotating joint of each safety protection door, and the safety protection doors are electrically connected with the host through the position switches; according to the special device for the vibration test of the small fan, the whole machine vibration test of the small fan can be quickly realized, and manpower is saved; the device can adapt to various types of fans, is flexible in model change and has multiple purposes; connection of multiple control modes can be realized, speed conversion can be quickly realized, and operation information of the tested fan can be conveniently displayed.

Description

Technical Field

[0001] The utility model relates to a special device for vibration testing of a small fan. Background Art

[0002] The vibration test of the whole fan is an important inspection process before the fan leaves the factory. Vibration testing is generally completed in laboratories, test centers and other institutions, and cannot be quickly integrated into the production line. If the vibration test work is moved to the laboratory, there will be many inconveniences, and it will also cause manpower waste during the transportation process and increase manufacturing costs. In addition, laboratory resources are generally configured for the entire company. If too many resources are occupied by a single product, it will affect other projects.

[0003] In view of this, it is necessary to develop a special device for vibration testing of small fans. Summary of the invention

[0004] In view of the deficiencies existing in the above problems, the utility model provides a special device for vibration testing of a small fan.

[0005] To achieve the above-mentioned purpose, the utility model provides a special device for vibration testing of a small fan, comprising a main frame with a box-shaped structure, a mounting frame is arranged inside the main frame, the mounting frame divides the interior of the main frame into a test area and a control area, a quick clamping mechanism is arranged on the mounting frame, the quick clamping mechanism is used to realize quick clamping of a fan mounting plate, the fan to be tested is fixedly mounted on the fan mounting plate, and the fan to be tested is electrically connected to the mainframe in the test area through electrical wiring;

[0006] The outer side of the main frame is also provided with a plurality of safety protection doors that are rotatably opened and closed. The rotating connection of the safety protection door is provided with a position switch, and is electrically connected to the main frame through the position switch.

[0007] Furthermore, a plurality of buffer-type vibration isolation pads are provided at the bottom of the main frame.

[0008] Furthermore, the quick clamping mechanism is of a hook type, that is, the upper end of the fan mounting plate is hooked on the mounting frame, and the lower end of the fan mounting plate is locked by a rotating handle.

[0009] Furthermore, the quick clamping mechanism includes an upper buckle plate and a lower stop block. The upper buckle plate is installed on the upper part of the mounting frame. The upper buckle plate presses the upper edge of the fan mounting plate by buckling. The lower stop block can be slidably disposed on the mounting frame. The lower stop block is driven by the motor screw slider drive module to rest against the lower edge of the fan mounting plate.

[0010] Furthermore, a plurality of pulleys are arranged in the lower stop block, and the plurality of pulleys are connected by a belt, wherein one of the pulleys is externally connected to a motor, and the upper surface of the belt is flush with the upper surface of the lower stop block, and the belt is used to adjust the lateral position of the fan mounting plate.

[0011] Furthermore, the host controls the wind turbine to be tested, and the control methods include human-machine interface control and analog input control.

[0012] The beneficial effects of the utility model compared with the prior art are:

[0013] 1. The special device for vibration testing of small fans involved in this scheme can quickly realize the vibration test of the whole machine of small fans, saving manpower; it can adapt to multiple models of fans, flexibly change models, and use one machine for multiple purposes; it can realize the connection of multiple control methods, quickly realize speed conversion, and can conveniently display the operation information of the tested fan.

[0014] 2. This solution solves the difficulties and pain points of vibration testing in the industry, making its operation state the most convenient and reliable. The main frame is composed of a welded frame and a thickened base to ensure the reliability of the fan test. High-precision sensors are used to ensure the accuracy of the fan test; a quick clamping mechanism is used to achieve rapid connection to the fan to be tested, improving the efficiency of fan installation; and a variety of control channels are used to achieve multi-mode speed control to improve test comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of a special device for vibration testing of a small fan involved;

[0016] Figure 2 is a schematic diagram of the quick clamping mechanism involved (Example 1);

[0017] Figure 3 for Figure 2 Schematic diagram of another direction;

[0018] Figure 4 for Figure 2 Exploded diagram of

[0019] Figure 5 is a schematic diagram of the quick clamping mechanism involved (Example 2);

[0020] Figure 6 for Figure 5 Schematic diagram of another direction.

[0021] In the figure: 1. Buffer type vibration isolation pad; 2. Main frame; 3. Safety protection door; 4. Installation frame; 5. Fan mounting plate; 6. Main machine; 7. Rotating handle; 8. Upper buckle plate; 9. Lower stopper; 10. Motor screw slider drive module; 11. Pulley; 12. Belt; a. Test area; b. Control area. DETAILED DESCRIPTION

[0022] Example 1: Figures 1 to 4 As shown, a special device for vibration testing of a small fan according to an embodiment of the utility model comprises a main frame 2 with a box-shaped structure, a mounting frame 4 is arranged inside the main frame 2, the mounting frame 4 divides the interior of the main frame 2 into a test area a and a control area b, a quick clamping mechanism is arranged on the mounting frame 4, the quick clamping mechanism is used to realize the quick clamping of the fan mounting plate 5, the fan to be tested is fixedly mounted on the fan mounting plate 5, and the fan to be tested is electrically connected to the main machine 6 of the test area a through electrical wiring; a plurality of rotating opening and closing safety protection doors 3 are also arranged on the outer side of the main frame 2, and a position switch is arranged at the rotating connection of the safety protection door 3, and is electrically connected to the main machine 6 through the position switch; a plurality of buffer-type Vibration isolation pad 1; the quick clamping mechanism includes an upper buckle plate 8 and a lower stopper 9, the upper buckle plate 8 is installed on the upper part of the mounting frame 4, the upper buckle plate 8 presses the upper edge of the fan mounting plate 5 by buckling, and the lower stopper 9 can be slidably arranged on the mounting frame 4, and the lower stopper 9 is driven by the motor screw slider driving module 10 to abut against the lower edge of the fan mounting plate 5; a plurality of pulleys 11 are arranged in the lower stopper 9, and the plurality of pulleys 11 are connected by a belt 12, one of the pulleys 11 is externally connected to a motor, and the upper surface of the belt 12 is flush with the upper surface of the lower stopper 9, and the belt 12 is used to adjust the lateral position of the fan mounting plate 5; the host 6 controls the fan to be tested, and the control methods include human-machine interface control and analog input control.

[0023] Embodiment 2: The difference from Embodiment 1 is the difference in the quick clamping mechanism, such as Figure 5 , Figure 6 As shown, the quick clamping mechanism is of hook type, that is, the upper end of the fan mounting plate 5 is hooked on the mounting frame 4, and the lower end of the fan mounting plate 5 is locked by the rotating handle 7.

[0024] The special device for vibration testing of small fans involved in this solution can quickly realize the whole-machine vibration test of small fans and save manpower; it can adapt to multiple models of fans, flexibly change models, and use one machine for multiple purposes; it can realize the connection of multiple control methods, quickly realize speed conversion, and conveniently display the operation information of the fan under test; this solution solves the difficulties and pain points of vibration testing in the industry, making its operation state the most convenient and reliable. The main frame consists of a welded frame and a thickened base to ensure the reliability of the fan test, and uses high-precision sensors to ensure the accuracy of the fan test; a quick clamping mechanism is used to achieve quick connection to the fan to be tested, thereby improving the efficiency of fan installation; and a variety of control channels are used to achieve multi-mode speed control to improve the test comfort.

[0025] In order to facilitate the understanding of the present invention, the following description is given in conjunction with the accompanying drawings during specific use;

[0026] The main frame is composed of a welded frame and a thickened bottom plate, which better ensures that the fan is not affected by external factors during the test. The foot part uses high-quality buffer-type vibration isolation pads. This design not only ensures the accuracy of the test, but also ensures the stability of the entire test device during the test.

[0027] The fan mounting plate is positioned and installed on the mounting frame by means of a quick clamping mechanism. In Example 1, a screw slider is used to drive the module to lift up and the upper buckle plate is pressed to achieve positioning. In Example 2, a hooking method is used in combination with the locking of the rotating handle. While ensuring the installation reliability, it greatly improves the installation efficiency of the personnel and reduces the load on the installers.

[0028] The design of the fan control circuit adopts two methods: the most intuitive human-machine interface control and the most common analog input control. For fans with communication interfaces, they can be directly controlled through 485 communication and display fan-related data; for fans with analog inputs, they can be connected to analog inputs to control the fans.

[0029] The safety protection door adopts the most effective and direct protection design, which has the advantages of mandatory and protective. When the safety protection door is not fastened to the corresponding position, the test fan cannot be started. While ensuring safety protection, the maximum opening and closing degree is guaranteed to facilitate installation during the test process.

[0030] The host part includes HMI display screen, indicator lights, buttons, special instruments and industrial control relays. Through the communication interface, it can display the working status of the currently running fan in real time and control the operation of the fan.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A special device for vibration testing of small fans, characterized by: The invention comprises a main frame (2) having a box-shaped structure, wherein a mounting frame (4) is arranged inside the main frame (2), wherein the mounting frame (4) divides the interior of the main frame (2) into a test area (a) and a control area (b), wherein a quick clamping mechanism is arranged on the mounting frame (4), wherein the quick clamping mechanism is used to realize quick clamping of a fan mounting plate (5), wherein a fan to be tested is fixedly mounted on the fan mounting plate (5), and the fan to be tested is electrically connected to a main machine (6) in the test area (a) through electrical wiring; A plurality of safety protection doors (3) that are rotatably opened and closed are also provided on the outside of the main frame (2); a position switch is provided at the rotation connection of the safety protection door (3), and an electrical connection is formed with the main frame (6) via the position switch.

2. A special device for vibration testing of a small fan according to claim 1, characterized in that: A plurality of buffer-type vibration isolation pads (1) are provided at the bottom of the main frame (2).

3. The dedicated device for vibration testing of a small fan according to claim 1, characterized in that: The quick clamping mechanism is of a hook type, that is, the upper end of the fan mounting plate (5) is hooked on the mounting frame (4), and the lower end of the fan mounting plate (5) is locked by a rotating handle (7).

4. The dedicated device for vibration testing of a small fan according to claim 1, characterized in that: The quick clamping mechanism comprises an upper buckle plate (8) and a lower stopper (9), wherein the upper buckle plate (8) is mounted on the upper part of the mounting frame (4), and the upper buckle plate (8) is pressed against the upper edge of the fan mounting plate (5) by buckling, and the lower stopper (9) is slidably arranged on the mounting frame (4), and the lower stopper (9) is driven by a motor screw slider driving module (10) to abut against the lower edge of the fan mounting plate (5).

5. A special device for vibration testing of a small fan according to claim 4, characterized in that: A plurality of pulleys (11) are arranged inside the lower stopper (9), and the plurality of pulleys (11) are connected via a belt (12), one of the pulleys (11) being externally connected to a motor, and the upper surface of the belt (12) is flush with the upper surface of the lower stopper (9), and the belt (12) is used to adjust the lateral position of the fan mounting plate (5).

6. The dedicated device for vibration testing of a small fan according to claim 1, characterized in that: The host (6) controls the fan to be tested, and the control method includes human-machine interface control and analog input control.

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