Encoder noise efficient test system based on industrial grade decibel meter

Abstract

The invention discloses an industrial grade decibel meter-based encoder noise efficient test system, which comprises a test bench, a mounting plate, bases, an electric control cabinet, a test mechanism, an auxiliary mechanism and a control display mechanism, and is characterized in that the mounting plate is arranged in the middle and at the bottom of the test bench, the bases are uniformly arranged at the bottom of the test bench, and the electric control cabinet is arranged in the test bench. The electric control cabinet is arranged on the bottom mounting plate, the testing mechanism is arranged on the upper mounting plate, the auxiliary mechanism is arranged in the testing mechanism and beside the testing mechanism, and the control display mechanism is arranged on the testing rack. According to the scheme, through a special mechanical structure, an excellent sound insulation design, an efficient operation process and stable hardware configuration, the problems that existing equipment is poor in adaptability, insufficient in sound insulation and low in efficiency are solved in a targeted mode, precision, high efficiency and stabilization of encoder noise testing are achieved, and the industrial batch detection requirement is met.

Description

Technical Field

[0001] This invention relates to the field of encoder technology, specifically to an efficient encoder noise testing system based on an industrial-grade decibel meter. Background Technology

[0002] Encoders, as high-precision signal detection components, are widely used in industrial control, automation equipment, precision instruments, and other fields. The stability of their operation directly affects the operational accuracy of the entire system. Noise is one of the important indicators reflecting the operating status of an encoder. Unsatisfactory noise levels may indicate problems such as wear and tear or assembly deviations in the encoder's internal mechanical structure, leading to potential issues such as signal transmission interference and shortened equipment lifespan.

[0003] Currently, noise testing equipment on the market has the following shortcomings: First, there is a lack of dedicated testing structures for encoders, and general testing equipment cannot be adapted to the encoder's shape and installation requirements, and is prone to additional interference during the testing process due to unstable fixing; second, the sound insulation effect of the testing environment is poor, and external environmental noise will affect the accuracy of the test data; third, the testing operation process is cumbersome, lacks intuitive data display and defective product statistics functions, and is difficult to meet the needs of industrial batch testing.

[0004] Therefore, a solution is needed. Summary of the Invention

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an efficient encoder noise testing system based on an industrial-grade decibel meter, thereby solving the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: An efficient encoder noise testing system based on an industrial-grade decibel meter includes a test bench, a mounting plate, a base, an electrical control cabinet, a testing mechanism, an auxiliary mechanism, and a control and display mechanism. The mounting plate is located in the middle and bottom of the test bench, the base is evenly distributed at the bottom of the test bench, the electrical control cabinet is located on the bottom mounting plate, the testing mechanism is located on the upper mounting plate, the auxiliary mechanism is located inside and beside the testing mechanism, and the control and display mechanism is located on the test bench. The testing mechanism includes a soundproof enclosure, a door, a hinge, sound insulation cotton, a quick-change fixture, a through groove, a DC motor, a rotating shaft, an encoder, cables, a first bracket, a cable groove, a second bracket, a fixing groove, a noise sensor, a third bracket, a base plate, an adjustment groove, a top plate, an anti-slip pad, a slider, smooth bolt holes, a fixing plate, threaded bolt holes, and a mounting groove. The soundproof enclosure is located on the top left half of the mounting plate above. The door is located at the front end of the soundproof enclosure. The hinge connects the soundproof enclosure and the door. The sound insulation cotton is wrapped around the inner wall of the soundproof enclosure. The quick-change fixture is located at the bottom inside the soundproof enclosure and on the sound insulation cotton. The through groove is located in the middle of the quick-change fixture and extends downward through the sound insulation cotton, the bottom of the soundproof enclosure, and the mounting plate above. The DC motor is located at the bottom of the through groove. The rotating shaft is located at the top of the DC motor and extends upward through the through groove. The encoder is located at the top of the rotating shaft. The cable is located to the right rear of the encoder. The first bracket is positioned at the top of the quick-change fixture corresponding to the position of the cable. The cable groove wraps around the cable and is mounted on the first bracket. The second bracket is positioned to the left of the first bracket. The fixing groove is positioned on the second bracket. The noise sensor is mounted on the second bracket via the fixing groove. The third bracket is positioned at the front end of the encoder. The base plates are positioned opposite each other at the middle of the rear end of the third bracket. The adjustment groove is positioned above each base plate and at the top of the third bracket. The top plate is positioned at the rear end of each adjustment groove. The anti-slip pad is positioned at the top of each base plate and at the bottom of each top plate. The slider passes through the adjustment groove and is positioned at the front end of each top plate. The smooth bolt hole is positioned on each slider. The fixing plate is positioned at the bottom of each slider and at the bottom of the adjustment groove. The threaded bolt hole is positioned on each fixing plate. The mounting grooves are respectively positioned on the bottom surfaces of the first, second, and third brackets.

[0008] Preferably, the soundproof cover has a cuboid structure, and the quick-change fixture has a rounded rectangular structure.

[0009] Preferably, bracket one, bracket two, and bracket three are all L-shaped structures, and the vertical surfaces of bracket one, bracket two, and bracket three all face the encoder. The width of bracket one is smaller than the width of bracket two, and the width of bracket three is smaller than the width of bracket one. Bracket one, bracket two, and bracket three are fixedly installed to the quick-change fixture at the mounting groove by external bolts.

[0010] Preferably, the cable trough has a U-shaped structure and the top of the support on both the left and right sides of the cable trough has an arc-shaped structure.

[0011] Preferably, the bottom plate and the top plate are both cuboid in shape and of the same size, the slider is T-shaped and integrally formed with the top plate, the adjustment groove is rectangular, the fixing plate is square and the area of ​​the fixing plate is equal to the area of ​​the slider located outside the adjustment groove, the slider and the fixing plate are fixed together by bolts, and the bracket, the bottom plate and the fixing plate are integrally formed.

[0012] Preferably, the auxiliary mechanism includes a flexible arm LED light, a surrounding panel, a partition, an OK part placement area, an NG part placement area, and mounting blocks. The flexible arm LED light is located at the rear end inside the soundproof cover. The surrounding panel is located at the right end of the soundproof cover and at the top of the mounting block. The partition is horizontally arranged in the middle of the surrounding panel. The OK part placement area is located in the front end area of ​​the partition. The NG part placement area is located in the rear end area of ​​the partition. The mounting blocks are located at the four corners of the inner end of the surrounding panel.

[0013] Preferably, the enclosure panel has a rectangular structure, the mounting block has a cuboid structure, and the enclosure panel, partition panel, and mounting block are integrally formed.

[0014] Preferably, the control and display mechanism includes a control unit, a touch screen, a switch button, and a fixing sleeve. The control unit is horizontally arranged at the top right rear of the test bench. The touch screen and the switch button are respectively arranged vertically at the front end of the control unit. The fixing sleeve is arranged vertically opposite to the left end of the control unit and wraps around the test bench.

[0015] (III) Beneficial Effects This invention provides a high-efficiency encoder noise testing system based on an industrial-grade decibel meter. It offers the following advantages: 1. Strong adaptability: The adjustable quick-change fixture is compatible with various encoder models, accurately fixes and organizes cables, and effectively reduces test interference.

[0016] 2. Excellent sound insulation and accuracy: Professional sound insulation structure isolates external noise, and high-precision noise sensors ensure that test data is true and reliable.

[0017] 3. Highly efficient and convenient operation: Quick-change design, visual operation and partition management, single-unit testing takes only 15 seconds, meeting the needs of batch testing.

[0018] 4. Excellent stability and durability: The core components are made of high-strength materials such as stainless steel and aluminum alloy, which make the structure stable and resistant to corrosion and wear, thus extending the service life. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a front view of the present invention; Figure 3 This is a schematic diagram of the internal structure of the soundproof cover of the present invention; Figure 4 This invention is based on Figure 3 Detailed structural diagram of some components on the internal quick-change fixture; Figure 5 This is a detailed structural diagram of the support bracket three of the present invention.

[0020] In the diagram: 1-Test bench; 2-Mounting plate; 3-Base; 4-Electrical control cabinet; 5-Test mechanism; 51-Soundproof enclosure; 52-Door; 53-Hinge; 54-Sound insulation cotton; 55-Quick change fixture; 56-Through groove; 57-DC motor; 58-Shaft; 59-Encoder; 510-Cable; 511-Bracket 1; 512-Cable groove; 513-Bracket 2; 514-Fixing groove; 515-Noise sensor; 516-Bracket 3; 517-Base plate; 518-Adjustment groove; 519-Top plate; 520-Anti-slip pad; 521-Slider; 522-Smooth bolt hole; 523-Fixing plate; 524-Threaded bolt hole; 525-Mounting groove; 6-Auxiliary mechanism; 61-Flexible arm LED light; 62-Enclosure panel; 63-Partition; 64-OK part placement area; 65-NG part placement area; 66-Mounting block; 7-Control and display mechanism; 71-Control unit; 72-Touch screen; 73-Switch button; 74-Fixing sleeve. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figure 1-5 The present invention provides a technical solution to achieve this: including a test bench 1, a mounting plate 2, a base 3, an electrical control cabinet 4, a testing mechanism 5, an auxiliary mechanism 6, and a control and display mechanism 7. The mounting plate 2 is disposed in the middle and bottom of the test bench 1, the base 3 is evenly disposed at the bottom of the test bench 1, the electrical control cabinet 4 is disposed on the bottom mounting plate 2, the testing mechanism 5 is disposed on the upper mounting plate 2, the auxiliary mechanism 6 is disposed inside the testing mechanism 5 and next to the testing mechanism 5, and the control and display mechanism 7 is disposed on the test bench 1.

[0023] Test mechanism 5 includes a soundproof enclosure 51, a door 52, a hinge 53, sound insulation cotton 54, a quick-change fixture 55, a through groove 56, a DC motor 57 (model: M9RZ60GV4Y), a rotating shaft 58, an encoder 59, a cable 510, a bracket 1 511, a cable trough 512, a bracket 2 513, a fixing groove 514, a noise sensor 515 (model: NA-42), a bracket 3 516, a base plate 517, an adjustment groove 518, a top plate 519, an anti-slip pad 520, a slider 521, a smooth bolt hole 522, a fixing plate 523, a threaded bolt hole 524, and a mounting groove 525. 51 is located on the top left half of the mounting plate 2 above. A door 52 is located at the front end of the soundproof cover 51. A hinge 53 connects the soundproof cover 51 and the door 52. Sound insulation cotton 54 is wrapped around the inner wall of the soundproof cover 51. A quick-change fixture 55 is located at the bottom inside the soundproof cover 51 and on the sound insulation cotton 54. A through groove 56 is located in the middle of the quick-change fixture 55 and extends downwards through the sound insulation cotton 54, the bottom of the soundproof cover 51, and the mounting plate 2 above. A DC motor 57 is located at the bottom of the through groove 56. A rotating shaft 58 is located at the top of the DC motor 57 and extends upwards through the through groove 56. An encoder 59 is... The encoder 59 is positioned on the top of the rotating shaft 58. Cable 510 is located to the right rear of the encoder 59. Bracket 1 511, corresponding to the position of cable 510, is positioned on the top of the quick-change fixture 55. Cable groove 512 wraps around cable 510 and is mounted on bracket 1 511. Bracket 2 513 is positioned to the left of bracket 1 511. Fixing groove 514 is mounted on bracket 2 513. Noise sensor 515 is mounted on bracket 2 513 via fixing groove 514. Bracket 3 516 is positioned at the front end of the encoder 59. Base plates 517 are positioned opposite each other at the middle of the rear end of bracket 3 516. Adjustment grooves 518 are located on each base plate 516. Above 17 and located at the top of bracket three 516, top plate 519 is set at the rear end of each adjustment groove 518, anti-slip pad 520 is set at the top of each bottom plate 517 and the bottom of each top plate 519, slider 521 passes through adjustment groove 518 and is set at the front end of each top plate 519, smooth bolt hole 522 is set on each slider 521, fixing plate 523 is set at the bottom of each slider 521 and located at the bottom of adjustment groove 518, threaded bolt hole 524 is set on each fixing plate 523, and mounting groove 525 is respectively set on the bottom surface of bracket one 511, bracket two 513 and bracket three 516.

[0024] In detail, the soundproof cover 51 has a cuboid structure, and the quick-change fixture 55 has a rounded rectangular structure.

[0025] Bracket 1 511, bracket 2 513 and bracket 3 516 are all L-shaped structures. The vertical surfaces of bracket 1 511, bracket 2 513 and bracket 3 516 all face the encoder 59. The width of bracket 1 511 is smaller than the width of bracket 2 513 and the width of bracket 3 516 is smaller than the width of bracket 1 511. Bracket 1 511, bracket 2 513 and bracket 3 516 are fixedly installed to quick-change fixture 55 at mounting groove 525 by external bolts.

[0026] The cable tray 512 has a U-shaped structure and the top of the bracket 511 on both the left and right sides of the cable tray 512 has an arc-shaped structure.

[0027] The base plate 517 and the top plate 519 are both rectangular and the same size. The slider 521 is T-shaped and integrally formed with the top plate 519. The adjustment groove 518 is rectangular. The fixing plate 523 is square and the area of ​​the fixing plate 523 is equal to the area of ​​the slider 521 located outside the adjustment groove 518. The slider 521 and the fixing plate 523 are fixed together by bolts. The bracket 516, the base plate 517 and the fixing plate 523 are integrally formed.

[0028] The auxiliary mechanism 6 includes a flexible arm LED light 61 (model: OK-70W-5W), a surrounding plate 62, a partition 63, an OK part placement area 64, an NG part placement area 65, and a mounting block 66. The flexible arm LED light 61 is located at the rear end inside the soundproof cover 51. The surrounding plate 62 is located at the right end of the soundproof cover 51 and at the top of the mounting plate 2. The partition 63 is horizontally located in the middle of the surrounding plate 62. The OK part placement area 64 is located in the front end area of ​​the partition 63. The NG part placement area 65 is located in the rear end area of ​​the partition 63. The mounting block 66 is located at the four corners of the inner end of the surrounding plate 62.

[0029] The enclosure 62 has a rectangular structure, and the mounting block 66 has a cuboid structure. The enclosure 62, partition 63 and mounting block 66 are integrally formed.

[0030] The control and display mechanism 7 includes a controller 71 (model: MT8071iP), a touch screen 72, a switch button 73, and a fixing sleeve 74. The controller 71 is horizontally arranged at the top right rear of the test bench 1. The touch screen 72 and the switch button 73 are respectively arranged vertically at the front end of the controller 71. The fixing sleeve 74 is arranged vertically opposite to the left end of the controller 71 and covers the test bench 1.

[0031] Solution Analysis: I. Highly adaptable to specific applications, effectively reducing test interference. Exclusive quick-change fixture design: Through the adjustable spacing of the top plate 519 and bottom plate 517 structure, it can quickly adapt to different models of encoders 59 such as OIH35 and OIH48, improving fixing efficiency and solving the problem of unstable fixing of general equipment.

[0032] Precise positioning and fixation: The bottom of encoder 59 is precisely aligned with shaft 58, and secured with anti-slip pad 520 and bolts to ensure no additional mechanical vibration interference during testing and to guarantee data accuracy.

[0033] Cable neatness and protection: The U-shaped cable tray 512 design can fix and protect the cable 510, avoiding interference caused by the cable 510 tangling or shaking.

[0034] II. Excellent sound insulation performance ensures the accuracy of test data. Professional sound insulation structure: The soundproof cover 51 is made of cold-rolled steel plate shell, filled with 20mm thick butyl rubber sound insulation cotton 54, and the surface is composite polyethylene layer, with a sound insulation effect of more than 25dB.

[0035] Fully enclosed testing environment: The 270° rotating hinge 53 ensures that the opening and closing of the cover 52 does not interfere with the operation. Combined with the enclosed soundproof cover 51 and soundproof cotton 54, it effectively isolates the interference of external environmental noise on the sensor, so that the noise data only reflects the encoder's own status.

[0036] High measurement accuracy: It adopts an industrial-grade noise sensor 515 with a measurement range of 30-130dB, which can accurately capture the operating noise of encoder 59, providing a reliable basis for product quality judgment.

[0037] III. Highly efficient and convenient operation, meeting the needs of industrial-scale batch testing. Quick-change fixtures and visual operation: The quick-change fixture 55 and encoder 59 are easy to install and remove. The 7-inch touch screen 72 supports real-time data display and NG part count storage, eliminating the need for additional manual recording.

[0038] Zoned management improves efficiency: OK and NG items are placed separately to reduce sorting time; a single test takes only 15 seconds, greatly improving batch inspection efficiency.

[0039] Optimized auxiliary functions: The flexible arm LED light 61 provides ample illumination, making it easy to observe the installation status inside the soundproof cover 51, further improving operational efficiency.

[0040] IV. Outstanding equipment stability and durability High-strength material: Test bench 1 is made of stainless steel to ensure the strength and stability of the overall structure and prevent deformation during long-term use.

[0041] Wear-resistant and durable parts: Key components such as hinges 53 and brackets are made of stainless steel or aluminum alloy, which have good corrosion resistance and wear resistance, extending the service life of the equipment.

[0042] Working principle: Test bench 1 is made of stainless steel, with dimensions of 1200mm×800mm×1800mm, ensuring the strength and stability of the equipment; soundproof enclosure 51 is made of cold-rolled steel plate, with dimensions of 600mm×600mm×500mm, and hinge 53 is made of stainless steel, allowing for smooth 270-degree rotation; sound insulation cotton 54 uses butyl rubber as the base material, with a thickness of 20mm and a 5mm thick polyethylene layer on the surface, achieving a sound insulation effect of over 25dB; brackets 1 511, 2 513, and 3 516 are made of aluminum alloy, and the U-shaped cable tray 512 has a diameter of 10mm, accommodating conventional cables; noise sensor 515 is an industrial-grade product with an accuracy of ±0.5dB, positioned 300mm from encoder 59; touchscreen 72 is a 7-inch industrial touchscreen, supporting real-time data display and NG part counting storage functions; flexible arm LED light 61 has a power of 5W, a color temperature of 6000K, and its illumination range covers the entire interior of the soundproof enclosure.

[0043] Test Procedure: The operator takes an encoder of model OIH35, first rotates the bolt on the slider 521 counterclockwise to allow the top plate 519 to be moved upwards manually, then places the encoder 59 on the base plate 517, with the bottom of the encoder 59 simultaneously engaging with the rotating shaft 58. Then, rotates the bolt on the slider 521 clockwise to press the top plate 519 against the encoder 59 to complete the fixation. The cable 510 is placed into the U-shaped cable tray 512, the cover door 52 is closed, and the switch button 73 is pressed. The encoder 59 runs at 1000 rpm, the noise sensor 515 collects noise data and transmits it to the touch screen 72, displaying a decibel value of 45dB, which is lower than the preset threshold of 55dB, thus it is judged as an OK part and placed in the OK part placement area 64. Another encoder 59 with internal gear wear is then tested, and the displayed decibel value is 62dB, which is higher than the threshold, thus it is judged as an NG part. The touch screen 72 automatically records the number of NG parts as 1, and the operator places it in the NG part placement area 65.

[0044] The encoder 59 was replaced with an OIH48 model. The distance between the top plate 519 and the bottom plate 517 can be adjusted by rotating the bolt on the slider 521 to accommodate encoders 59 of different specifications. During the test, the encoder ran at 2000 rpm, and the noise sensor 515 collected data showing 48dB, which was determined to be an OK part. The entire test process took 15 seconds, meeting the batch inspection efficiency requirements.

[0045] Technical effects of implementing this solution: This solution addresses three major pain points of existing general-purpose testing equipment through its specialized mechanical structure, superior sound insulation design, efficient operation process, and stable hardware configuration: poor compatibility → rapid compatibility with multiple encoder models, secure and interference-free mounting; insufficient sound insulation → professional sound insulation structure ensures data accuracy and reliability; and low efficiency → visual operation and zone management significantly improve batch testing efficiency. Ultimately, it achieves precise, efficient, and stable encoder noise testing, fully meeting the testing needs of industrial mass production.

[0046] The present invention comprises: 1-Test bench; 2-Mounting plate; 3-Base; 4-Electrical control cabinet; 5-Test mechanism; 51-Soundproof cover; 52-Door; 53-Hinge; 54-Soundproof cotton; 55-Quick change fixture; 56-Through groove; 57-DC motor; 58-Shaft; 59-Encoder; 510-Cable; 511-Bracket one; 512-Cable groove; 513-Bracket two; 514-Fixing groove; 515-Noise sensor; 516-Bracket three; 517-Base plate; 518-Adjustment groove; 519-Top plate; 520-Anti-slip pad; 521-Slider; 522-Smooth bolt hole; 523-Fixing plate; 524-Threaded bolt hole; 525-Mounting groove; 6-Auxiliary mechanism; 61-Flexible The components include: 62-arm LED light; 63-enclosure panel; 64-partition; 65-OK part placement area; 66-NG part placement area; 7-mounting block; 77-control display mechanism; 71-control unit; 72-touch screen; 73-switch button; and 74-fixing sleeve. These components are all general standard parts or parts known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. The problem this invention solves is that current noise testing equipment on the market lacks a dedicated encoder testing structure, making it prone to interference due to unstable fixing; poor sound insulation affects data accuracy; and cumbersome operation lacks intuitive data and statistical functions, making it difficult to meet the needs of industrial batch testing. This invention, through a dedicated mechanical structure, excellent sound insulation design, efficient operation process, and stable hardware configuration, specifically addresses the pain points of poor adaptability, insufficient sound insulation, and low efficiency of existing equipment, achieving accurate, efficient, and stable encoder noise testing to meet the needs of industrial batch testing.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-efficiency encoder noise testing system based on an industrial-grade decibel meter, characterized in that: The test bench includes a test stand (1), a mounting plate (2), a base (3), an electrical control cabinet (4), a test mechanism (5), an auxiliary mechanism (6), and a control and display mechanism (7). The mounting plate (2) is located in the middle and bottom of the test stand (1). The base (3) is evenly distributed at the bottom of the test stand (1). The electrical control cabinet (4) is located on the mounting plate (2) at the bottom. The test mechanism (5) is located on the mounting plate (2) at the top. The auxiliary mechanism (6) is located inside the test mechanism (5) and next to the test mechanism (5). The control and display mechanism (7) is located on the test stand (1). The testing mechanism (5) includes a soundproof cover (51), a door (52), a hinge (53), sound insulation cotton (54), a quick-change fixture (55), a through groove (56), a DC motor (57), a rotating shaft (58), an encoder (59), a cable (510), a bracket one (511), a cable groove (512), a bracket two (513), a fixing groove (514), a noise sensor (515), a bracket three (516), a base plate (517), an adjustment groove (518), a top plate (519), an anti-slip pad (520), a slider (521), a smooth bolt hole (522), a fixing plate (523), a threaded bolt hole (524), and a mounting groove (525). The soundproof cover (51) is located on the top. The top left half of the mounting plate (2) is located on the soundproof cover (51), the cover door (52) is located at the front end of the soundproof cover (51), the hinge (53) connects the soundproof cover (51) and the cover door (52), the soundproof cotton (54) is wrapped on the inner wall of the soundproof cover (51), the quick-change fixture (55) is located at the bottom inside the soundproof cover (51) and on the soundproof cotton (54), the through groove (56) is located in the middle of the quick-change fixture (55) and extends downward through the soundproof cotton (54), the bottom of the soundproof cover (51) and the mounting plate (2) above, the DC motor (57) is located at the bottom of the through groove (56), and the rotating shaft (58) is located on the DC motor. The encoder (59) is located at the top of the rotating shaft (58) and extends upward through the through groove (56). The cable (510) is located to the right rear of the encoder (59). The bracket one (511) is located at the top of the quick-change fixture (55) corresponding to the position of the cable (510). The cable groove (512) wraps around the cable (510) and is located on the bracket one (511). The bracket two (513) is located to the left of the bracket one (511). The fixing groove (514) is located on the bracket two (513). The noise sensor (515) is located on the bracket two (513) through the fixing groove (514). The bracket three (516) is disposed at the front end of the encoder (59), the base plate (517) is disposed opposite each other at the middle of the rear end of the bracket three (516), the adjustment groove (518) is disposed above each base plate (517) and located at the top of the bracket three (516), the top plate (519) is disposed at the rear end of each adjustment groove (518), the anti-slip pad (520) is disposed at the top of each base plate (517) and the bottom of each top plate (519), the slider (521) passes through the adjustment groove (518) and is disposed at the front end of each top plate (519), and the smooth bolt hole (522) is disposed on each slider (521).The fixing plate (523) is disposed at the bottom of each slider (521) and located at the bottom of the adjusting groove (518). The threaded bolt hole (524) is disposed on each fixing plate (523). The mounting groove (525) is disposed on the bottom surface of bracket one (511), bracket two (513), and bracket three (516), respectively.

2. The encoder noise high-efficiency testing system based on an industrial-grade decibel meter according to claim 1, characterized in that: The soundproof cover (51) has a cuboid structure, and the quick-change fixture (55) has a rounded rectangular structure.

3. The encoder noise high-efficiency testing system based on an industrial-grade decibel meter according to claim 2, characterized in that: The brackets 1 (511), 2 (513) and 3 (516) are all L-shaped structures. The vertical surfaces of the brackets 1 (511), 2 (513) and 3 (516) all face the encoder (59). The width of the bracket 1 (511) is smaller than the width of the bracket 2 (513), and the width of the bracket 3 (516) is smaller than the width of the bracket 1 (511). The brackets 1 (511), 2 (513) and 3 (516) are fixedly installed with the quick-change fixture (55) at the mounting groove (525) by external bolts.

4. The efficient encoder noise testing system based on an industrial-grade decibel meter according to claim 3, characterized in that: The cable trough (512) has a U-shaped structure and the top of the bracket (511) on both sides of the cable trough (512) has an arc-shaped structure.

5. The efficient encoder noise testing system based on an industrial-grade decibel meter according to claim 4, characterized in that: The base plate (517) and top plate (519) are both rectangular and of the same size. The slider (521) is T-shaped and integrally formed with the top plate (519). The adjustment groove (518) is rectangular. The fixing plate (523) is square and the area of ​​the fixing plate (523) is equal to the area of ​​the slider (521) located outside the adjustment groove (518). The slider (521) and the fixing plate (523) are previously fixed by bolts. The bracket (516), base plate (517) and fixing plate (523) are integrally formed.

6. The high-efficiency encoder noise testing system based on an industrial-grade decibel meter according to claim 5, characterized in that: The auxiliary mechanism (6) includes a flexible arm LED light (61), a surrounding plate (62), a partition (63), an OK part placement area (64), an NG part placement area (65), and a mounting block (66). The flexible arm LED light (61) is located at the rear end inside the soundproof cover (51). The surrounding plate (62) is located at the right end of the soundproof cover (51) and at the top of the mounting plate (2). The partition (63) is horizontally arranged in the middle of the surrounding plate (62). The OK part placement area (64) is located in the front end area of ​​the partition (63). The NG part placement area (65) is located in the rear end area of ​​the partition (63). The mounting block (66) is located at the four corners of the inner end of the surrounding plate (62).

7. The efficient encoder noise testing system based on an industrial-grade decibel meter according to claim 6, characterized in that: The enclosure (62) has a rectangular structure, the mounting block (66) has a cuboid structure, and the enclosure (62), partition (63) and mounting block (66) are integrally formed.

8. The efficient encoder noise testing system based on an industrial-grade decibel meter according to claim 7, characterized in that: The control and display mechanism (7) includes a control unit (71), a touch screen (72), a switch button (73), and a fixing sleeve (74). The control unit (71) is horizontally arranged at the top right rear of the test bench (1). The touch screen (72) and the switch button (73) are respectively arranged in an up-down structure at the front end of the control unit (71). The fixing sleeve (74) is arranged vertically opposite to the left end of the control unit (71) and wraps around the test bench (1).

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