Device for checking durability of cabin ventilation opening

Abstract

The utility model discloses a device for examining the durability of a cabin ventilation opening, which can realize the recording of blade adjustment times of different ventilation opening products and the examination of the service life capability of the products. The device is mainly composed of a working table, a product fixing device, a frequency converter, a counter, a sensor, an adjusting and pushing transition device, a variable connector and the like. The device can easily fix a product, the rotating speed of the frequency converter is adjusted to control the blade shifting rate, and the shifting times are recorded and adjusted through the sensor and the counter. The utility model has the advantages of light weight, portability, no space occupation, simple operation, reasonable layout and reliable structural connection. According to the utility model, the test performance of the technical requirements is met, and the device also has high reliability and good maintainability and operability.

Description

Technical Field

[0001] The utility model relates to a device for testing the toggle ability and life of a cabin vent product, and belongs to the technical field of durability testing. Background Art

[0002] Various types of vent products are installed on aircraft, and their performance and life can be judged by testing the blade toggle usage rate and whether the blades will get stuck or break after multiple toggling. In order to be able to test whether the vent life meets the demand and whether the reliability meets the requirements before the product is installed, it is necessary to design a corresponding assessment device that can detect whether there is sticking and breaking during the toggle process, whether the toggle resistance is too large (whether excessive resistance will affect the feel of the product), and other issues. On the other hand, the assessment device needs to effectively improve the accuracy of product life tests, while reducing the degree of manual participation and saving labor costs. Compared with the manual toggle solution, it can ensure the continuity and consistency of the assessment process, improve testing capabilities and efficiency (test equipment can be carried out during the day and at night). Summary of the invention

[0003] In response to the problems recorded in the background technology, the utility model aims to provide a device for durability assessment of cabin vents, which can realize test records of conventional blade adjustment and the number of times the blades are adjusted for different vents, as well as product life records, so as to solve the problems that similar existing products require manual blade adjustment and the original recorded data is prone to errors, thereby improving test precision, efficiency and accuracy.

[0004] In order to solve the above problems, the utility model adopts the following technical solutions:

[0005] The device used for durability assessment of cabin vents includes:

[0006] A product fixing device, the product fixing device comprising a pair of clamps that can move relative to each other in the vertical direction, and an installation space is formed between the clamps so that the cabin vent can move forward, backward, left, and right;

[0007] A variable chuck, the variable chuck comprising a first chuck for shifting a vane of the cabin vent, and a second chuck for shifting a gear for adjusting the cabin vent;

[0008] A detachable extension rod, wherein a first end of the detachable extension rod is connected to the variable clamp;

[0009] An adjusting and pushing transition device is provided with a slideway, and the second end of the detachable extension rod passes through the adjusting and pushing transition device and slides in the slideway;

[0010] A connecting section, wherein a first end of the connecting section is hinged to a second end of the detachable extension rod;

[0011] An eccentric rotating block, wherein the eccentric rotating block has a straight through slot, a rotating shaft is arranged in the straight through slot, a sensor trigger block is fixedly connected to the rotating shaft, and the second end of the connecting section is rotatably connected to the rotating shaft;

[0012] A motor, wherein the output shaft of the motor is connected to the eccentric rotating block so as to drive the eccentric rotating block to rotate;

[0013] A frequency converter, a counter and a sensor, wherein the frequency converter is connected to the motor, the counter is connected to the sensor, and the sensor is arranged in the motion plane of the sensor trigger block.

[0014] Furthermore, one of the pair of clamps is fixedly connected to a linear rod, and the other clamp is slidably connected to the linear rod.

[0015] As an option, the first clamp is a flat pick, one end of which is inserted into the gap between any two blades in the cabin vent.

[0016] As an option, the second clamp is a paddle bent into a U-shape, and two ends of the paddle are inserted into any two tooth grooves on the cockpit vent adjustment gear.

[0017] As an option, the surface of the rotating shaft is threaded and is fastened at any position in the linear through slot by at least one pair of nuts, so as to adjust the rotation radius of the rotating shaft relative to the output shaft of the motor.

[0018] Compared with the prior art, the utility model has a flexible connection mode, and can realize the toggle life and reliability test of various blade-type vents, so as to assess the durability of the product. The toggle amplitude of the utility model can be adjusted, the test number and time can be recorded, and more accurate readings (number and frequency) can be obtained during the test, which meets the product assessment requirements and provides a reliable basis for determining whether the product quality is within the qualified range.

[0019] The utility model can judge whether the resistance in the vent adjustment process affects the operating feel through the output torque of the motor, and can quantitatively evaluate the operability of the vent.

[0020] The utility model has the advantages of low cost, easy maintenance, light weight, portability, small space occupation, simple operation, good equipment stability, high control accuracy, and can perform tests continuously throughout the day, thus greatly saving equipment cost and labor cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the layout of the components of the durability assessment device;

[0022] Figure 2It is a three-dimensional schematic diagram of the main components of the durability assessment device;

[0023] Figure 3 for Figure 2 A view in another direction;

[0024] In the figure: 1. Work surface; 2. Product fixing device; 3. Frequency converter; 4. Counter; 5. Motor; 6. Eccentric rotating block; 7. Sensor; 8. Connecting section; 9. Adjustable push transition device; 10. Removable extension section; 11. Variable joint; 12. Product installation part. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but it should not be understood that the scope of the subject matter described in the present invention is limited to the following embodiments. Without departing from the above-mentioned technical ideas of the present invention, various modifications, substitutions and changes made according to the common technical knowledge and customary means in the field are included in the scope of the present invention.

[0026] like Figure 1 As shown, according to the assessment requirements of most products, the assessment device adopts an integrated design, with the product fixing device 2 on the far left, and the product installation position 12 on one side of the product fixing device 2. A variable joint 11 is arranged in the product installation position 12 area, and the right side of the variable joint 11 is mainly composed of a frequency converter 3, a counter 4, a motor 5, an eccentric rotating block 6, a sensor 7 and an adjustment and promotion transition device 9.

[0027] The product fixture 2, the frequency converter 3, the counting sensor 7 and the counter 4 are directly mounted on the work surface 1, while the motor 5, the eccentric rotating block 6 and the adjusting and pushing transition device 9 are fixed on the work surface 1 through the mounting plate. The connecting section 8, the detachable extension section 10 and the variable joint 11 are connected to the eccentric rotating block 6 through the adjusting and pushing transition device 9, and finally the cockpit vent product to be tested is fastened by the product fixture 2 so that the adjusting gear or blade is in the product installation position 12 area.

[0028] like Figure 2 and Figure 3As shown, the motor 5 provides torque as a power source to drive the eccentric rotating block 6 to rotate. The eccentricity here refers to the rotating shaft located in the linear groove on the eccentric rotating block 6. The rotating shaft is not at the center of rotation of the motor 5, but deviates from the center by a distance, which is used to adjust the blade or the shifting angle of the adjusting gear. The rotating shaft is pressed in the linear groove of the eccentric rotating block 6 by two nuts to keep the position relative to the linear groove unchanged. At the same time, a sensor trigger block, such as a magnet, is also fixed on the rotating shaft to trigger the sensor 7 during the rotation process. One end of the connecting section 8 is similar to a movable bolt, and the through hole of the movable bolt is rotatably connected to the rotating shaft. The other end of the connecting section 8 is a fork ear structure, which is hinged with the detachable extension section 10 so that the two can rotate. The connecting section 8 and the detachable extension section 10 are both rigid linear rods, and a part of the detachable extension section 10 performs linear motion in the slideway inside the adjustment push transition device 9. The other end of the detachable extension section 10 is connected to the variable joint 11. The variable joint 11 has different shapes according to different needs. For example, when the blades need to be moved, a sheet-shaped paddle is used, and when the adjustment gear (for adjusting the angle of the blades) needs to be pushed, a U-shaped paddle is used. When the motor 5 rotates, the eccentric rotation of the shaft is adjusted to the linear reciprocating motion of the detachable extension section 10, thereby cyclically moving the blades or adjusting the gears.

[0029] According to the adjustment and assessment requirements of most vent products, the work surface 1 is a horizontal surface, the toggle rate is adjustable, which is realized by the frequency converter 3, and the data recording of the toggle frequency and number is realized by the counter 4. The product fixing device 2 includes an upper clamp and a lower clamp, and the upper clamp slides up and down through a vertical rod, so as to clamp the cabin vent product between the upper clamp and the lower clamp.

[0030] During the assessment test, first turn on the power of the work surface 1 (this power serves as the total power supply of the motor 5, counter 4 and inverter 3), fix the cabin vent product on the product installation position 12, and fix the cabin vent product with the product fixing device 2, select the variable joint 11 according to the structural form of the cabin vent, and select the appropriate length of the detachable extension section 10 according to the external dimensions of the cabin vent product. After the installation is completed, turn on the power of the inverter 3 and the counter 4, adjust the speed of the inverter 3 according to the frequency requirement of the product, turn on the counter 4 to record the number of times of dialing, and form a cycle.

[0031] The testing device of the utility model can accurately control the toggle angle, position and frequency of the vent. The work table 1 and the mounting plate are welded from stainless steel. The device is cheap, light and easy to move.

[0032] Specifically, the main steps in durability assessment are as follows:

[0033] Step 1: Turn on the power of the work surface 1, fix the cabin vent product at the product installation position 12, fix the cabin vent product with the product fixing device 2, select the variable joint 11 according to the structural form of the vent, and select the appropriate detachable extension section 10 according to the size of the cabin vent.

[0034] Step 2. After the installation is completed, turn on the power supply of the inverter 3 and the counter 4, adjust the speed of the inverter 3 according to the frequency requirement of the dialing product, and turn on the counter 4 again to record the number of dialing times (when the power supply of the counter 4 is turned on, the counting result of the previous assessment test is displayed. After turning it on again, the counter 4 is reset and a new record is started), forming a cycle.

[0035] Step three, according to the requirements of the assessment outline, control the size of the turning resistance, turning frequency, turning amplitude, and number of times of the cabin vents, record the assessment results based on data such as the output torque of the motor 5, the output frequency of the inverter 3, and the count on the counter 4, and finally evaluate the durability (lifespan and reliability) of the cabin vents.

[0036] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A device for evaluating the durability of a cabin vent, characterized in that: include: A product fixing device (2), the product fixing device (2) comprising a pair of clamps that can move relative to each other in a vertical direction, and an installation space is formed between the clamps so that the cabin vent can move forward, backward, left, and right; A variable clamp (11), the variable clamp (11) comprising a first clamp for moving the vanes of the cabin vent and a second clamp for moving the adjusting gear of the cabin vent; A detachable extension rod (10), wherein a first end of the detachable extension rod (10) is connected to a variable clamp (11); An adjusting and pushing transition device (9), wherein a slideway is arranged in the adjusting and pushing transition device (9), and the second end of the detachable extension rod (10) passes through the adjusting and pushing transition device (9) and slides in the slideway; A connecting section (8), wherein a first end of the connecting section (8) is hingedly connected to a second end of the detachable extension rod (10); An eccentric rotating block (6), wherein the eccentric rotating block (6) has a straight through groove, a rotating shaft is arranged in the straight through groove, a sensor trigger block is fixedly connected to the rotating shaft, and the second end of the connecting section (8) is rotatably connected to the rotating shaft; A motor (5), wherein an output shaft of the motor (5) is connected to an eccentric rotating block (6) so as to drive the eccentric rotating block (6) to rotate; A frequency converter (3), a counter (4) and a sensor (7), wherein the frequency converter (3) is connected to a motor (5), the counter (4) is connected to the sensor (7), and the sensor (7) is arranged in a motion plane of a sensor trigger block.

2. The device for testing the durability of cabin vents according to claim 1, characterized in that: One of the pair of clamps is fixedly connected to a linear rod, and the other clamp is slidably connected to the linear rod.

3. The device for testing the durability of cabin vents according to claim 1, characterized in that: The first clamp is a flat pick, one end of which is inserted into the gap between any two blades in the cabin vent.

4. The device for testing the durability of cabin vents according to claim 1, characterized in that: The second clamp is a paddle bent into a U shape, and two ends of the paddle are inserted into any two tooth grooves on the cockpit vent regulating gear.

5. The device for testing the durability of cabin vents according to claim 1, characterized in that: The rotating shaft has threads on its surface and is fastened at any position in the linear through slot by at least one pair of nuts, thereby adjusting the rotation radius of the rotating shaft relative to the output shaft of the motor (5).

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