A noise control device for large underground scraper

Abstract

The present invention discloses a noise control device for a large underground scraper loader, which relates to the technical field of noise control and comprises a box body, wherein a fastening device and an engine abnormality detection device are respectively installed on the left and right sides of the box body, a sound insulation cotton detection and smoothing device are installed on the inner sides of the box body, a sound insulation cotton automatic replacement device is also installed inside the box body, and box body parts are installed outside the box body. The sound insulation cotton detection and smoothing device of the present invention can control the flatness of the sound insulation cotton and detect whether the sound insulation cotton is damaged, and automatically replace the damaged sound insulation cotton, thereby effectively reducing the noise emitted by the engine of the large underground scraper loader.

Description

Technical Field

[0001] The present invention relates to the technical field of noise control, and in particular to a noise control device for a large underground scraper. Background Art

[0002] Underground scraper loaders are the most commonly used mechanical equipment in the mining industry. However, scraper loaders produce a lot of noise due to their high power and high engine output. Currently, most of the equipment used to control noise on scraper loaders' engines simply isolates the engine and lays sound insulation cotton. However, the noise cannot be effectively reduced after the sound insulation cotton is damaged. In addition, the engine is relatively sophisticated and is generally not installed on the outer surface, making it difficult to check the damage of the sound insulation cotton.

[0003] The invention patent with publication number CN106736833B discloses a steel cutting noise control device, including a box body, a collecting trough and a fixed rod on the right side of the box body, and a vibration absorber installed on the top of the fixed rod to reduce the vibration during steel cutting and reduce the noise to a certain extent. An elastic part is installed on the top of the box body, a pressure plate is fixed on the elastic part, a motor is provided at the bottom of the pressure plate, a circular cutting knife is fixed on a rotating shaft connected to the motor output shaft, and sound insulation cotton is provided at the bottom of the pressure plate and on the left and right sides of the box body. The sound insulation cotton can absorb noise and achieve the effect of reducing noise. However, the sound insulation cotton is damaged, which greatly affects the effect of absorbing noise. The sound insulation cotton is arranged on the inside of the box body, so it is difficult to detect the damage of the sound insulation cotton in time and it is not convenient to replace the damaged sound insulation cotton. Summary of the invention

[0004] In view of the above technical problems, the present invention discloses a noise control device for a large underground scraper loader, comprising a box body, on which a sound insulation cotton detection and smoothing device is installed, the sound insulation cotton detection and smoothing device comprises a plurality of brackets, a connecting tube is fixed on the bracket, the first ends of a plurality of springs VI are fixed on the connecting tube, the springs VI are evenly distributed on the connecting tube, a touch hand is fixed on the second end of the spring VI, a sleeve is arranged outside the connecting tube, a plurality of notches are arranged outside the sleeve, the touch hand passes through the notches, an alarm device is fixed in the sleeve, a conduction block is slidably connected to the alarm device, a connecting rod II is fixed to the conduction block, the connecting rod II passes through the plurality of touch hands and slides on the touch hands, and a reset spring is fixed on the connecting rod II.

[0005] Furthermore, the bracket is fixedly mounted on the motor III, the motor III is mounted on the box, and the motor III drives the bracket to slide on the motor guide rail.

[0006] Furthermore, the box body is provided with a fastening device, which includes two contact plates, on which the first ends of a plurality of springs V are fixed, the springs V are evenly distributed on the contact plates, and the second ends of the springs V are fixedly mounted on the box body.

[0007] Furthermore, the box body is equipped with an engine abnormality detection device, which includes a square plate, a sliding hook assembly is fixed on the square plate, the sliding hook assembly drives gear II to rotate, gear II is fixedly installed on the first end of connecting rod I, and gear I is fixed on the second end of connecting rod I. Gear I is meshed with the rack, and the rack is fixedly installed on slider I. Slider I is fixed with fixed plate I, and fixed plate I is fixed with a constraint block, which constrains the alarm. Fixed plate I is also fixed with a first end of spring II, and the second end of spring II is fixedly installed on fixed plate II, fixed plate II is fixedly installed on slide groove I, slider I slides on slide groove I, and the first end of spring I is also fixed on the square plate, and the second end of spring I is fixedly installed on the contact plate.

[0008] Furthermore, the square plate is slidably connected to the vertical plate, the vertical plate is slidably connected to a limit block, the limit block is fixed with a first end of a spring, and the second end of the spring is fixedly mounted on the vertical plate.

[0009] Furthermore, the sliding hook assembly includes a rotating plate, a sliding plate, and a spring III. The first end of the spring III is fixed on the sliding plate, the second end of the spring III is fixedly mounted on the rotating plate, the rotating plate is hinged to the sliding plate, and limit rods are arranged on both sides of the rotating plate and fixed on the sliding plate.

[0010] Furthermore, the box body is equipped with an automatic sound insulation cotton replacement device, which includes a motor I. A sound insulation cotton storage cylinder I is fixed on the output shaft of the motor I. A transmission wheel II is fixed on the sound insulation cotton storage cylinder I. The transmission wheel drives the transmission wheel I to rotate through the transmission belt I. A transmission wheel III is also fixed on the sound insulation cotton storage cylinder I. The transmission wheel III drives the transmission wheel IV through the transmission belt III. The transmission wheel IV drives the sound insulation cotton recovery cylinder I to rotate. A transmission wheel V is fixed on the sound insulation cotton recovery cylinder I. The transmission wheel V drives the transmission wheel VI to rotate through the transmission belt IV. The sound insulation cotton is transferred out of the sound insulation cotton storage cylinder I, and the sound insulation cotton follows the track through the rotation of the transmission belt and enters the sound insulation cotton recovery cylinder I.

[0011] Furthermore, the automatic sound insulation cotton replacement device also includes a motor II, a sound insulation cotton recovery cylinder II is fixed on the output shaft of motor II, a transmission wheel VII is fixed on the sound insulation cotton recovery cylinder II, the transmission wheel VII drives the transmission wheel VIII to rotate through the transmission belt II, the transmission wheel VIII drives the sound insulation cotton storage cylinder II to rotate, the sound insulation cotton is transferred out from the sound insulation cotton storage cylinder II, and the sound insulation cotton follows the track through the rotation of the transmission belt into the sound insulation cotton recovery cylinder II.

[0012] Compared with the prior art, the present invention has the following beneficial effects: (1) The sound insulation cotton detection and smoothing device 1 of the present invention drives the bracket to slide on the motor guide rail through a linear motor, and smoothes the sound insulation cotton through a touch hand, so that the sound insulation cotton can better play a sound insulation role; (2) The present invention compresses spring I through the abnormal vibration of the engine, and spring I pushes the sliding hook assembly to drive gear II and gear I to rotate, and gear I drives the rack to move downward. When it slides to the constraint block to release the constraint on the alarm, the alarm sounds an alarm; (3) The present invention uses the elastic force of spring V to make the contact plate clamp the engine of the scraper loader to play a tightening role. The deformation of spring V caused by the vibration of the engine can offset part of the vibration and reduce noise; (4) The present invention drives the conduction block to slide through the elastic force of spring VI, so that when the sound insulation cotton is damaged, the conduction block is in full contact with the alarm device to sound an alarm, reminding the operator to replace it in time; (5) The present invention drives the transmission belt to rotate through the motor, so that the sound insulation cotton can be automatically replaced along the track. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 .

[0014] Figure 2 for Figure 1 Cross-sectional view at AA in the middle.

[0015] Figure 3 The internal structure of the present invention is shown in FIG. Figure 1 .

[0016] Figure 4 It is a schematic diagram of some parts of the sound insulation cotton detection and smoothing device of the present invention.

[0017] Figure 5 for Figure 4 Enlarged view of point E in the middle.

[0018] Figure 6 The overall structure of the present invention is shown in FIG. Figure 2 .

[0019] Figure 7 It is a schematic diagram of some parts of the engine abnormality detection device of the present invention.

[0020] Figure 8 It is a schematic diagram of the engine abnormality detection device of the present invention.

[0021] Fig. 9 for Figure 8 Enlarged view of point F in the middle.

[0022] Fig.10 The internal structure of the present invention is shown in FIG. Figure 2 .

[0023] Fig.11 for Figure 3 Enlarged view of point B in the middle.

[0024] Fig.12 for Figure 3 Enlarged view of point C in the middle.

[0025] Fig.13 for Figure 3 Enlarged view of point D in the middle.

[0026] Figure numbers: 1-sound insulation cotton detection and smoothing device; 2-fastening device; 3-box components; 4-engine abnormality detection device; 5-sound insulation cotton automatic replacement device; 6-box; 101-touch hand; 102-spring VI; 103-connecting rod II; 104-bracket; 105-conduction block; 106-alarm device; 107-motor guide rail; 108-connecting tube; 109-sleeve; 110-reset spring; 201-spring V; 202-contact plate; 301-push-pull plate I; 302-hinge Ⅰ; ​​303-handle Ⅰ; 304-hinge Ⅱ; 305-handle Ⅱ; 306-push-pull plate Ⅱ; 401-vertical plate; 402-spring Ⅰ; 403-rotating plate; 404-square plate; 405-support rod; 406-alarm; 407-restraint block; 408-spring Ⅱ; 409-gear Ⅰ; 410-gear Ⅱ; 411-sliding plate; 412-spring Ⅲ; 413-connecting rod Ⅰ; 414-sleeve Ⅰ; 415-slide Ⅰ; 416-slider Ⅰ ;417- rack;418- fixed plate Ⅰ;419- limit block;420- fixed plate Ⅱ;501- roller Ⅰ;502- auxiliary wheel;503- fixing part Ⅰ;504- transmission wheel Ⅰ;505- sound insulation cotton storage cylinder Ⅰ;506- casing Ⅲ;507- support Ⅰ;508- bolt Ⅰ;509- sound insulation cotton recovery cylinder Ⅱ;510- guide rail Ⅱ;511- transmission belt Ⅱ;512- transmission belt Ⅲ;513- motor Ⅱ;514- motor Ⅰ;515- transmission wheel Ⅱ; 516-transmission belt Ⅰ; 517-sound insulation cotton storage cylinder Ⅱ; 518-sleeve Ⅳ; 519-fixing part Ⅱ; 520-sound insulation cotton recovery cylinder Ⅰ; 521-guide rail Ⅰ; 522-transmission belt Ⅳ; 523-sleeve Ⅴ; 524-fixing part Ⅲ; 525-bolt Ⅱ; 526-transmission wheel Ⅲ; 527-transmission wheel Ⅳ; 528-transmission wheel Ⅴ; 529-transmission wheel Ⅵ; 530-transmission wheel Ⅶ; 531-transmission wheel VIII; 532-sleeve Ⅵ; 533-fixing part Ⅳ. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0028] Embodiment: A noise control device for a large underground scraper loader comprises a box body 6, on which are mounted a sound insulation cotton detection and smoothing device 1, a fastening device 2, a box body component 3, an engine abnormality detection device 4, and a sound insulation cotton automatic replacement device 5. The sound insulation cotton detection and smoothing device 1 drives the sliding of the connecting rod Ⅱ103 by changing the compression length of the spring Ⅵ102, so that the conductive block 105 fully contacts the alarm device 106 to sound an alarm, and the damaged sound insulation cotton can be discovered and replaced in time; the fastening device 2 makes the contact plate 202 fit with the engine by changing the compression length of the spring Ⅴ201, thereby playing a fastening role; the box body component 3 opens and closes the push-pull plate Ⅰ301 and the push-pull plate Ⅱ306 through the hinge Ⅰ302 and the hinge Ⅱ304, so as to facilitate the replacement of the sound insulation cotton storage cylinder and the sound insulation cotton recovery cylinder; the engine abnormality detection device 4 makes the sliding hook assembly and the gear Ⅱ410 move together by changing the compression length of the spring Ⅰ402, thereby driving the fixing plate Ⅰ The sliding of 418 releases the constraint of the constraint block 407 on the alarm 406, so the engine abnormality detection device 4 can monitor the abnormal vibration of the engine; the automatic sound insulation cotton replacement device 5 drives the sound insulation cotton storage cylinder Ⅰ505 to rotate by starting the motor Ⅰ514, and the sound insulation cotton storage cylinder Ⅰ505 drives the transmission belt Ⅲ512 to make the sound insulation cotton recovery cylinder Ⅰ520 rotate synchronously, and the sound insulation cotton storage cylinder Ⅰ505 drives the transmission belt Ⅰ516 to drive the roller Ⅰ501, and the automatic sound insulation cotton replacement device 5 also drives the sound insulation cotton recovery cylinder Ⅱ509 to rotate by starting the motor Ⅱ513, and the sound insulation cotton recovery cylinder Ⅱ509 drives the transmission belt Ⅱ511 to rotate to make the sound insulation cotton storage cylinder Ⅱ517 rotate synchronously. Through the cooperation of various parts in the automatic sound insulation cotton replacement device 5 and the assistance of the guide rails Ⅱ510 and Ⅰ521 fixed on the box body 6, the automatic sound insulation cotton replacement device 5 can realize the automatic laying and replacement of sound insulation cotton.

[0029] The sound insulation cotton detection and smoothing device 1 includes a connecting tube 108, three connecting tubes 108 are arranged, and the connecting tubes 108 are evenly distributed on the side of the box body 6. The first end of a spring VI 102 is fixed on each connecting tube 108. A plurality of springs VI 102 are arranged, and the springs VI 102 are evenly distributed on the connecting tube 108. A touch hand 101 is fixed on the second end of each spring VI 102. The connecting tube 108 is covered with a sleeve 109, and the sleeve 109 has a plurality of notches outside. The touch hand 101 passes through the notches, and an alarm device 106 is fixed inside the sleeve 109. The alarm device 1 06 is slidably connected to the conduction block 105, the conduction block 105 is fixed with a connecting rod Ⅱ 103, the connecting rod Ⅱ 103 passes through the touch hand 101 and slides on the touch hand 101, the reset spring 110 is connected between the connecting rod Ⅱ 103 and the connecting tube 108, the reset spring 110 can drive the connecting rod Ⅱ 103 to reset, the connecting tube 108 is fixedly installed on the bracket 104, the bracket 104 is connected to the linear motor mover, the linear motor is installed on the box 6, the linear motor drives the bracket 104 to slide on the motor guide rail 107, and the sound insulation cotton is smoothed and damaged.

[0030] The fastening device 2 includes a contact plate 202, two contact plates 202 are provided, and the contact plates 202 are respectively installed on the left and right sides of the box body 6. The first end of the spring V201 is fixed on the contact plate 202, and the second end of the spring V201 is fixedly installed on the box body 6. There are multiple springs V201, and the springs V201 are evenly distributed on the contact plate 202.

[0031] The box component 3 includes a push-pull plate Ⅰ301, two push-pull plates Ⅰ301 are provided, and the push-pull plates Ⅰ301 are respectively installed on the left and right sides of the box 6, and a handle Ⅰ303 is fixed on the push-pull plate Ⅰ301, and a hinge Ⅰ302 is also fixed on the push-pull plate Ⅰ301, and the hinge Ⅰ302 is fixedly installed on the box 6, and the push-pull plate Ⅰ301 is hinged to the box 6 through the hinge Ⅰ302; the box component 3 also includes a push-pull plate Ⅱ306, two push-pull plates Ⅱ306 are provided, and a handle Ⅱ305 is fixed on the push-pull plate Ⅱ306, and a hinge Ⅱ304 is also fixed on the push-pull plate Ⅱ306, and the hinge Ⅱ304 is fixedly installed on the box 6, and the push-pull plate Ⅱ306 is hinged to the box 6 through the hinge Ⅱ304.

[0032] The engine abnormality detection device 4 includes a square plate 404, on which a first end of a spring I 402 is fixed, and a second end of the spring I 402 is fixedly mounted on the contact plate 202. A first end of a sliding plate 411 is also fixed on the square plate 404, and a rotating plate 403 is hinged at the second end of the sliding plate 411. A first end of a spring III 412 is also fixed to the second end of the sliding plate 411, and a second end of the spring III 412 is fixedly mounted on the rotating plate 403. The sliding of the square plate 404 drives the sliding plate 411 to move, so that the rotating plate 403 hooks the special-shaped gear II 410, and drives the gear II 410 to move together. The gear II 410 is fixedly mounted on the first end of the connecting rod I 413, and a sleeve I 414 is sleeved in the middle of the connecting rod I 413. The sleeve I 414 is fixedly mounted on the support rod 405. The support rod 40 5 is fixedly mounted on the box body 6, the second end of the connecting rod I 413 is fixedly mounted on the gear I 409, the gear I 409 is meshed with the rack 417, the rotation of the gear I 409 drives the rack 417 to slide, the rack 417 is fixedly mounted on the slider I 416, the slider I 416 is fixed with a fixing plate I 418, the fixing plate I 418 is fixed with a restraining block 407, the restraining block 407 restrains the alarm 406, the slider I 416 is slidably connected to the slide groove I 415, the slide groove I 415 is fixed with a fixing plate II 420, the fixing plate II 420 is fixed with a second end of a spring II 408, the first end of the spring II 408 is fixedly mounted on the fixing plate I 418, the square plate 404 is slidably connected to the vertical plate 401, the vertical plate 401 is slidably connected with a limit block 419, and a spring is fixed below the limit block 419.

[0033] The automatic sound insulation cotton replacement device 5 includes a roller Ⅰ501, two rollers Ⅰ501 are arranged, a transmission wheel Ⅰ504 is fixed to the first end of the roller Ⅰ501, the transmission wheel Ⅰ504 drives the transmission wheel Ⅱ515 to rotate through the transmission belt Ⅰ516, the transmission wheel Ⅱ515 is fixedly installed on the first end of the sound insulation cotton storage tube Ⅰ505, a transmission wheel Ⅲ526 is also fixed to the first end of the sound insulation cotton storage tube Ⅰ505, the transmission wheel Ⅲ526 drives the transmission wheel Ⅳ527 through the transmission belt Ⅲ512, the transmission wheel Ⅳ527 is fixedly installed on the first end of the sound insulation cotton recovery tube Ⅰ520, the first end of the sound insulation cotton recovery tube Ⅰ520 is also fixed with a transmission wheel Ⅴ528, the transmission wheel Ⅴ528 rotates the transmission wheel Ⅵ529 through the transmission belt Ⅳ522, and the transmission wheel Ⅵ529 is fixedly installed On roller Ⅰ501, the first end of the sound insulation cotton storage cylinder Ⅰ505 is fixedly mounted on the output shaft of motor Ⅰ514, the second end of the sound insulation cotton storage cylinder Ⅰ505 is hinged with a sleeve Ⅲ506, three sleeves Ⅲ506 are provided, and the sleeves Ⅲ506 are respectively hinged on the second ends of the sound insulation cotton storage cylinder Ⅰ505, the sound insulation cotton recovery cylinder Ⅱ509, and the sound insulation cotton recovery cylinder Ⅰ520, the sleeve Ⅲ506 is fixedly mounted on the support Ⅰ507, the support Ⅰ507 is equipped with a bolt Ⅰ508, two bolts Ⅰ508 are provided, and the bolts Ⅰ508 are respectively installed on both sides of the support Ⅰ507, the support Ⅰ507 is fixedly mounted on the box body 6, the auxiliary wheel 502 is fixed on the roller Ⅰ501, the roller Ⅰ501 is hinged with a fixing part Ⅰ503, and the fixing part Ⅰ503 is fixedly mounted on the box body 6.

[0034] The automatic sound insulation cotton replacement device 5 also includes a motor II 513, the first end of the sound insulation cotton recovery cylinder II 509 is fixed on the output shaft of the motor II 513, the first end of the sound insulation cotton recovery cylinder II 509 is also fixed with a transmission wheel VII 530, the transmission wheel VII 530 drives the transmission wheel VIII 531 to rotate through the transmission belt II 511, the transmission wheel VIII 531 is fixedly installed on the first end of the sound insulation cotton storage cylinder II 517, the first end of the sound insulation cotton storage cylinder II 517 is hinged with a sleeve IV 518, the sleeve IV 518 is fixedly installed on the fixing part II 519, the fixing part II 519 is fixedly installed on the box body 6, the second end of the sound insulation cotton storage cylinder II 517 is hinged with a sleeve V523, the sleeve V523 is fixedly installed On the fixing part III524, bolt II525 is installed on the fixing part III524, two bolts II525 are set, and bolts II525 are respectively installed on both sides of the fixing part III524, and the fixing part III524 is fixedly installed on the box body 6, and the first end of the sound insulation cotton recovery cylinder II509 is hinged with a sleeve VI532, and two sleeves VI532 are set, which are respectively fixedly installed on the first ends of the sound insulation cotton recovery cylinder II509 and the sound insulation cotton recovery cylinder I520, and the sleeve VI532 is fixedly installed on the fixing part IV533, and the fixing part IV533 is fixedly installed on the box body 6; the automatic sound insulation cotton replacement device 5 also includes a guide rail II510 and a guide rail I521, and the guide rail II510 and the guide rail I521 are respectively fixed on the box body 6.

[0035] Working principle: During normal use, the contact plate 202 is against the outer casing of the underground scraper engine, and the spring V201 is in a compressed state, making the contact between the present invention and the engine more secure; the normal vibration of the engine compresses the spring I402, and due to the obstruction of the limit block 419, the spring I402 with a small compression amplitude cannot cause the square plate 404 to slide; the linear motor is started to drive the bracket 104 to slide on the motor guide rail 107, and the touch hand 101 smoothes the sound insulation cotton on the inner side of the sound insulation cotton, the spring VI102 is compressed, and the conductive block 105 cannot fully contact the alarm device 106.

[0036] When the abnormal vibration amplitude of the engine increases, the compression amplitude of spring I 402 increases, the force on limit block 419 increases, the spring under limit block 419 is compressed, limit block 419 slides downward, square plate 404 slides on vertical plate 401, square plate 404 pushes the sliding hook assembly to drive gear II 410 to rotate, gear II 410 drives gear I 409 to rotate synchronously through connecting rod I 413, gear I 409 drives rack 417 to slide downward, rack 417 drives slider I 416 to slide downward on slide groove I 415, fixed plate I 418 and constraint block 407 slide downward together, spring II 408 is compressed, when constraint block 407 slides down to alarm 406 to be free from constraint, alarm 406 sounds an alarm; when the abnormal vibration of the engine disappears, spring II 408 is released from the compressed state, drives fixed plate I 418 and constraint block 407 to slide upward, and alarm 406 is constrained by constraint block 407.

[0037] When a hole appears in the sound insulation cotton, the spring VI 102 is released from the compressed state, and the spring VI 102 pushes the touch hand 101 forward, and the touch hand 101 drives the connecting rod II 103 to slide, so that the conductive block 105 is in full contact with the alarm device 106, and the alarm device 106 is turned on to sound an alarm.

[0038] When the sound insulation cotton needs to be replaced, the motor Ⅰ514 drives the sound insulation cotton storage cylinder Ⅰ505 to rotate, and the transmission wheel Ⅱ515 on the sound insulation cotton storage cylinder Ⅰ505 rotates together, and the transmission wheel Ⅱ515 drives the transmission wheel Ⅰ504 to rotate through the transmission belt Ⅰ516, and the transmission wheel Ⅰ504 drives the roller Ⅰ501 to rotate together, and the sound insulation cotton storage cylinder Ⅰ505 rotates to drive the transmission wheel Ⅲ526, and the transmission wheel Ⅲ526 drives the transmission wheel Ⅳ527 to rotate through the transmission belt Ⅲ512, and the transmission wheel Ⅳ527 drives the sound insulation cotton recycling Cylinder Ⅰ520 rotates together, and with the assistance of guide rail Ⅰ521, the sound insulation cotton on the left and right sides and the upper side of the present invention can be replaced; motor Ⅱ513 drives the sound insulation cotton recovery cylinder Ⅱ509 to rotate, and the transmission wheel Ⅶ530 on the sound insulation cotton recovery cylinder Ⅱ509 rotates therewith, and the transmission wheel Ⅶ530 drives the transmission wheel Ⅷ531 to rotate through the transmission belt Ⅱ511, and the transmission wheel Ⅷ531 drives the sound insulation cotton storage cylinder Ⅱ517 to rotate together. With the assistance of guide rail Ⅱ510, the sound insulation cotton on the rear side of the present invention can be replaced.

Claims

1. A noise control device for a large underground scraper, comprising a housing (6), characterized in that: The box body (6) is equipped with a sound insulation cotton detection and smoothing device (1) for smoothing and detecting damage of the sound insulation cotton, a fastening device (2) for fixing the engine of the underground large scraper, an engine abnormality detection device (4) for detecting whether the engine has abnormal conditions, and a sound insulation cotton automatic replacement device (5) for automatically replacing the sound insulation cotton. The sound insulation cotton detection and smoothing device (1) includes a plurality of brackets (104), a connecting tube (108) is fixed on the bracket (104), and the first ends of a plurality of springs VI (102) are fixed on the connecting tube (108), and the springs VI (102) are evenly distributed on the connecting tube (108). A touch hand (101) is fixed to the second end of the spring VI (102); a sleeve (109) is provided on the outer surface of the connecting tube (108); a plurality of notches are provided on the outer surface of the sleeve (109); the touch hand (101) passes through the notches; an alarm device (106) is fixed in the sleeve (109); a conductive block (105) is slidably connected to the alarm device (106); a connecting rod II (103) is fixed to the conductive block (105); the connecting rod II (103) passes through the plurality of touch hands (101) and slides on the plurality of touch hands (101); a return spring (110) is connected between the connecting rod II (103) and the connecting tube (108); The box body (6) is provided with an engine abnormality detection device (4), the engine abnormality detection device (4) comprising a square plate (404), a sliding hook assembly being fixed on the square plate (404), the sliding hook assembly driving a special-shaped gear II (410) to rotate, the gear II (410) being fixedly mounted on a first end of a connecting rod I (413), a gear I (409) being fixedly mounted on a second end of the connecting rod I (413), the gear I (409) being meshed with a rack (417), the rack (417) being fixedly mounted on a slider I (416), the slider I (416) being fixedly provided with a fixing plate I (418), The fixed plate I (418) is fixed with a restraining block (407), and the restraining block (407) restrains the alarm (406). The fixed plate I (418) is also fixed with a first end of a spring II (408), and the second end of the spring II (408) is fixedly mounted on the fixed plate II (420). The fixed plate II (420) is fixedly mounted on the slide groove I (415), and the slider I (416) slides on the slide groove I (415). The square plate (404) is also fixed with a first end of a spring I (402), and the second end of the spring I (402) is fixedly mounted on the contact plate (202); The square plate (404) is slidably connected to the vertical plate (401), and a limit block (419) is slidably connected to the vertical plate (401), wherein the limit block (419) is fixed with a first end of a spring, and a second end of the spring is fixedly mounted on the vertical plate (401); The sliding hook assembly comprises a rotating plate (403), a sliding plate (411), and a spring III (412); a first end of the spring III (412) is fixed to the sliding plate (411); a second end of the spring III (412) is fixedly mounted on the rotating plate (403); and the rotating plate (403) is hingedly connected to the sliding plate (411); The box body (6) is provided with an automatic sound insulation cotton replacement device (5), the automatic sound insulation cotton replacement device (5) comprising a motor I (514), a sound insulation cotton storage cylinder I (505) being fixed on the output shaft of the motor I (514), a transmission wheel II (515) being fixed on the sound insulation cotton storage cylinder I (505), the transmission wheel II (515) driving the transmission wheel I (504) to rotate via a transmission belt I (516), the transmission wheel I (504) driving the sound insulation cotton storage cylinder I (505) to rotate, the sound insulation cotton storage cylinder I (505) also being fixed A transmission wheel III (526) is provided, wherein the transmission wheel III (526) drives the transmission wheel IV (527) to rotate via a transmission belt III (512), wherein the transmission wheel IV (527) drives the sound insulation cotton recovery cylinder I (520) to rotate, wherein a transmission wheel V (528) is fixed to the sound insulation cotton recovery cylinder I (520), wherein the transmission wheel V (528) drives the transmission wheel VI (529) via a transmission belt IV (522), and the sound insulation cotton is transferred out of the sound insulation cotton storage cylinder I (505), and the sound insulation cotton follows the track through the rotation of the transmission belt and enters the sound insulation cotton recovery cylinder I (520); The automatic sound insulation cotton replacement device (5) also includes a motor II (513), a sound insulation cotton recovery cylinder II (509) is fixed on the output shaft of the motor II (513), a transmission wheel VII (530) is fixed on the sound insulation cotton recovery cylinder II (509), the transmission wheel VII (530) drives the transmission wheel VIII (531) to rotate through the transmission belt II (511), and a sound insulation cotton storage cylinder II (517) is fixed on the transmission wheel VIII (531), the sound insulation cotton is transferred out of the sound insulation cotton storage cylinder II (517), and the sound insulation cotton follows the track through the rotation of the transmission belt and enters the sound insulation cotton recovery cylinder II (509).

2. A noise control device for a large underground scraper according to claim 1, characterized in that: The bracket (104) is connected to a mover of a linear motor, the linear motor is mounted on a box (6), and the linear motor drives the bracket (104) to slide on a motor guide rail (107).

3. The noise control device for a large underground scraper according to claim 1, characterized in that: The box body (6) is provided with a fastening device (2), the fastening device (2) comprising two contact plates (202), the first ends of a plurality of springs V (201) being fixed on the contact plates (202), the springs V (201) being evenly distributed on the contact plates (202), and the second ends of the springs V (201) being fixedly mounted on the box body (6).

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