Noise detection device and method for blowing and sucking machine

Abstract

The invention discloses a blowing and suction machine noise detection device and method, and belongs to the technical field of noise detection. The blowing and suction machine noise detection device comprises a feeding conveyor, a connection conveyor, a discharging conveyor, a tool plate and a sound insulation shielding box; a multi-point-position swing detection mechanism is arranged in the sound insulation shielding box, and the multi-point-position swing detection mechanism comprises a surrounding moving assembly and a synchronous swing assembly; a rigid air volume control mechanism and a pressurization opening and closing mechanism are further arranged in the sound insulation shielding box. By means of the mode, noise generated by the suction blowing machine is detected through the decibel detector, the surrounding moving assembly and the synchronous swinging assembly are matched to drive the decibel detector to move on the outer side of the suction blowing machine in a large range, and noise detection is conducted on the suction blowing machine from multiple point positions; then simulating a noise generation condition of the suction blower under a real working condition through a rigid air volume control mechanism, and collecting noise data; through cooperative analysis of noise data of the suction blowing machine obtained through multiple groups of test results, the accuracy and authenticity of the detection result are effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of noise detection, and in particular to a noise detection device and method for a blowing and suction machine. Background Art

[0002] Portable vacuum cleaners are usually powered by batteries. When in use, you only need to press the switch. The overall design is light and compact (such as Figure 1 As shown in the figure, by installing different air duct accessories or cloth bags on the air inlet and outlet ducts of the blower-suction machine, the blowing and vacuuming functions can be switched. However, the blower-suction machine will generate certain noise when working. If the noise exceeds the set value, it will affect the operator's experience and interfere with the surrounding people.

[0003] Chinese patent CN117847000A discloses a fan operation noise detection device, including a soundproof channel, a noise tester, a wind resistance adjustment component, and a fan positioning component; an opening is provided on one side of the soundproof channel, and a door body is provided at the opening; a detection area is formed in the soundproof channel at the opening; a mounting opening is provided at the top of the soundproof channel above the detection area; a noise tester is installed at the mounting opening through a connecting substrate; and the detection part of the noise tester is located in the soundproof channel. During the detection of the present invention, the detection personnel can stand on one side of the door body and check the noise value through the display part of the noise tester. During the detection process, the soundproof channel can isolate the propagation of the fan noise to avoid discomfort caused by the noise to the detection personnel, and during the detection process, the detection personnel can adjust the resistance of the fan air intake through the wind resistance adjustment component to detect the noise of the fan under different wind resistance conditions. However, the detection mechanism still has the following problems:

[0004] 1. The detection component isolates the fan noise by pushing the sliding seat into the sound insulation channel to close the door. The sound insulation channel is not airtight enough to block the noise. In addition, the detection device needs to control the pushing and pushing of the sliding seat to realize the disassembly and assembly of the fan. It is difficult to meet the detection requirements of batch blowing and suction machines, and the detection efficiency is low.

[0005] 2. The noise generated by the blower-vacuum machine after starting is not evenly distributed, but has a certain directionality. Different blowers-vacuum machines may have different noise distributions when working. It is impossible to obtain accurate detection data of the working noise of the blower-vacuum machine by installing decibel detectors in only a few directions and forming multiple fixed detection points. For blowers-vacuum machines of different models or different layouts, it is necessary to find suitable detection points and then adjust the layout of the noise detector. The number and location of the detection points need to be reconfirmed, which is not convenient for manual operation.

[0006] 3. The detection device only adjusts the wind resistance of the fan through the wind resistance cloth, and cannot simulate the working conditions of the fan's synchronous air intake and air outlet resistance. In addition, the wind resistance cloth is made of flexible material, and the aperture of the through hole on the wind resistance cloth will expand with the increase of working time. For example, the initial aperture of the through hole is 3 cm. After working for 8 hours, the aperture of the through hole expands to 3.5 cm. The measured value of the fan noise does not match the actual size of the wind resistance, which causes detection errors.

[0007] Based on this, the present invention designs a noise detection device and method for a blowing and suction machine to solve the above problems. Summary of the invention

[0008] In view of the above-mentioned shortcomings of the prior art, the present invention provides a noise detection device and method for a blowing and suction machine.

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0010] A noise detection device for a blowing and suction machine, comprising a feeding conveyor, a connecting conveyor, a discharging conveyor, a tooling plate and a sound insulation shielding box;

[0011] The left and right sides of the sound insulation shielding box are respectively provided with a box inlet and a box outlet, and the outer edges of the box inlet and the box outlet are both provided with sealing rings;

[0012] The feed conveyor and the discharge conveyor are respectively located on the left and right sides of the sound insulation shielding box, and the connecting conveyor is located inside the sound insulation shielding box. The three cooperate to move the tooling board from left to right;

[0013] The discharging ends of the feed conveyor, the connecting conveyor and the discharging conveyor are all provided with positioning blocking components for positioning the tooling plate;

[0014] A switch control component for triggering a control switch of the suction and blow machine to control the start and stop of the suction and blow machine is arranged at the bottom of the soundproof shielding box;

[0015] A multi-point swing detection mechanism is arranged inside the soundproof shielding box, and the multi-point swing detection mechanism includes a surrounding moving component and a synchronous swing component. The surrounding moving component is arranged at the inner bottom of the soundproof shielding box, and the moving end of the surrounding moving component is installed with a synchronous swing component, and the moving end of the synchronous swing component is provided with a decibel detector;

[0016] The interior of the soundproof shielding box is also provided with a rigid air volume control mechanism for simulating the actual working conditions of the suction and blowing machine;

[0017] The left and right sides of the soundproof shielding box are respectively provided with pressurized opening and closing mechanisms for controlling the opening and closing states of the box inlet and the box outlet.

[0018] Furthermore, the orbiting moving component includes an arc track, a gear ring, a moving plate, a pulley, a servo motor and a gear. The arc track is fixedly installed on the inner bottom of the sound insulation shielding box and located on the outside of the connecting conveyor. The gear ring is fixedly connected to the arc track; a plurality of pulleys are rotatably installed on the moving plate, and the pulleys are distributed on the inner and outer sides of the arc track and are rollingly connected to the arc track; the servo motor is fixedly connected to the moving plate, and the output end of the servo motor is fixedly installed with a gear, and the gear is meshingly connected to the gear ring.

[0019] Furthermore, the synchronous swing assembly includes a driving column, a cam groove, a deep groove ball bearing, a support arm and a rocker arm. The driving column is fixedly connected to the output end of the servo motor, and the driving column rotates synchronously with the gear; the support arm is fixedly connected to the movable plate; a decibel detector is fixedly installed on the lower end of the rocker arm, the middle part of the rocker arm is hinged to the support arm, and a deep groove ball bearing is arranged on the upper end of the rocker arm; the side wall of the driving column is provided with a cam groove rollingly connected to the deep groove ball bearing.

[0020] Furthermore, the rigid air volume control mechanism includes a fixed bracket, a vertical movement component, a mounting bracket, an air inlet flow control component and an air outlet flow control component. The fixed bracket is fixedly installed on the inner top of the sound insulation shielding box, and a vertical movement component is arranged on the fixed bracket. The driving end of the vertical movement component is fixedly installed with the mounting bracket; the vertical movement component can adopt a cylinder slide rod structure, and the vertical movement component is used to control the vertical movement of the mounting bracket; the mounting bracket is provided with an air inlet flow control component and an air outlet flow control component.

[0021] Furthermore, the structures of the air inlet flow control component and the air outlet flow control component are the same, and both include a servo linear module, a movable bracket and a hollow baffle plate. The servo linear module is fixedly connected to the mounting bracket, and the movable bracket is fixedly installed on the movable end of the servo linear module, and the hollow baffle plate is fixedly installed on the movable bracket.

[0022] Furthermore, the hollow shielding plate is made of a metal plate, and ventilation holes are evenly opened on the hollow shielding plate; the apertures of the ventilation holes on the hollow shielding plate gradually decrease along the length direction of the hollow shielding plate.

[0023] Furthermore, the pressurized opening and closing mechanism includes a soundproofing screen door, an upper hinged rod, a lower hinged rod, a supporting longitudinal rod, a supporting transverse rod and a pressurized driving assembly, the soundproofing screen door is adapted to the box inlet and the box outlet; two groups of upper hinged rods are symmetrically distributed on the front and rear sides of the upper end of the soundproofing screen door, and two groups of lower hinged rods are symmetrically distributed on the front and rear sides of the lower end of the soundproofing screen door, the left ends of the upper hinged rod and the lower hinged rod on the same side are both hinged to the soundproofing screen door, and the right ends of the upper hinged rod and the lower hinged rod on the same side are both hinged to the supporting longitudinal rod; the soundproofing screen door, the upper hinged rod, the lower hinged rod and the supporting longitudinal rod form a parallelogram structure;

[0024] The supporting longitudinal bars on the front and rear sides are fixedly connected by supporting cross bars; the pressurized driving component is arranged on the inner top of the sound insulation shielding box, and the pressurized driving component controls the opening and closing state of the sound insulation shielding door and the box entrance or box exit by controlling the position of the sound insulation shielding door.

[0025] Furthermore, the pressurized drive assembly includes an inner slide rail, an outer slide rail, an inner roller, an outer roller and a push cylinder. The two inner slide rails are symmetrically fixedly installed on the front and rear sides of the inner wall of the sound insulation shielding box, and the two outer slide rails are also symmetrically fixedly installed on the front and rear sides of the inner wall of the sound insulation shielding box; the inner rollers are rotatably installed at the hinges of the upper hinged rod and the lower hinged rod with the sound insulation shielding door through bearings, and the outer rollers are rotatably installed at the hinges of the upper hinged rod and the lower hinged rod with the supporting longitudinal rod through bearings; the inner roller is rollingly connected to the inner slide rail, and the outer roller is rollingly connected to the outer slide rail; the lower end of the inner slide rail is provided with a groove for accommodating the inner roller connected to the upper hinged rod; the push cylinder is fixedly installed on the top of the sound insulation shield, and the output end of the push cylinder is fixedly connected to the supporting cross bar.

[0026] Furthermore, a material placing plate is fixedly installed on the tooling plate, and a contoured positioning groove adapted to the suction-blowing machine is opened on the material placing plate; a positioning block for supporting the shell of the suction-blowing machine is fixedly installed on the material placing plate, and a plurality of positioning columns for supporting the operating handle of the suction-blowing machine are fixedly installed on the tooling plate, and pads are arranged on the top of the positioning block and the positioning columns.

[0027] In order to better achieve the purpose of the present invention, the present invention also provides a detection method of a noise detection device for a blowing and suction machine, comprising the following steps:

[0028] Step 1: The feed conveyor conveys the tooling board equipped with the suction and blowing machine to the right, and the tooling board passes through the box entrance and enters the connecting conveyor in the sound insulation shielding box, and is blocked and positioned by the positioning blocking component;

[0029] Step 2: The push cylinder drives the soundproof shielding door to move vertically downward, and finally presses the soundproof shielding doors on both sides toward the box entrance and the box exit to form a pressurized sealing effect, so that the inside and outside of the soundproof shielding box are isolated;

[0030] Step 3: Trigger the control switch of the suction and blow machine through the switch control component to start the suction and blow machine;

[0031] Step 4: Start the servo motor to make the moving plate move around the suction and blowing machine, and at the same time drive the swing rod to swing back and forth with the hinge point on the support arm as the center of the circle, so that the decibel detector swings left and right while moving around the suction and blowing machine, and performs noise detection on the natural air intake and suction state of the suction and blowing machine at multiple points in a wide range; and the servo motor is started at intervals to make the decibel detector stop and go, and the noise is detected when the decibel detector remains stationary;

[0032] Step 5: The vertical moving assembly drives the mounting bracket to move vertically downward, so that the hollow shielding plate of the air inlet flow control assembly and the hollow shielding plate of the air outlet flow control assembly respectively shield the air inlet pipe and the air outlet pipe;

[0033] Step 6: The servo linear module drives the hollow shielding plate to move through the movable bracket, so that the aperture of the air-permeable through-hole on the hollow shielding plate facing the air inlet pipe or the air outlet pipe gradually decreases, simulating the noise generated when the air inlet pipe or the air outlet pipe of the suction and blower is gradually blocked during actual work. The decibel detector monitors the noise value generated by the suction and blower in real time;

[0034] Step 7: After the detection is completed, the switch control component is used to turn off the suction and blower machine, the soundproof shielding door is reset to open the box entrance and box exit, and the connecting conveyor moves the suction and blower machine that has completed the noise detection operation to the discharge conveyor, and through a comprehensive analysis of the noise generated by the suction and blower under different working conditions, it is determined whether the noise of the suction and blower machine meets the standard.

[0035] Compared with the prior art, the present invention has the following beneficial effects: 1. The control switch of the suction and blowing machine is triggered by the switch control component to control the suction and blowing machine to start. When the suction and blowing machine reaches its maximum power, the noise generated by the suction and blowing machine is detected by the decibel detector, and the decibel detector is driven to move over a large range outside the suction and blowing machine through the coordination of the surrounding moving component and the synchronous swinging component, and the noise of the suction and blowing machine is detected from multiple points to obtain high-precision noise detection data, thereby reducing the possibility of defective products flowing out. It can also adapt to the noise detection of suction and blowing machines of different models and specifications, meet the noise detection needs of batch suction and blowing machines, and does not need to redefine the number and position of the detectors, which is convenient for manual operation;

[0036] 2. The present invention presses the soundproof shielding door toward the box inlet or box outlet, so that the soundproof shielding door and the sealing ring form a pressurized sealing effect, thereby achieving a closed isolation effect on the soundproof shielding box, and the soundproof shielding door and its driving structure avoid the conveying of the blower-vacuum machine, so that the feeding conveyor, the connecting conveyor, the discharging conveyor and the soundproof shielding box cooperate to realize a continuous conveying structure for the blower-vacuum machine, which can be directly connected to the production line to perform noise detection on batch blower-vacuum machines, and the opening and closing operations of the blower-vacuum machine are all performed automatically;

[0037] 3. The present invention drives the hollow shielding plate through the servo linear module to gradually block the air inlet pipe or the air outlet pipe, thereby simulating the noise generated when the blockage of the suction and blower gradually worsens during actual work by controlling the flow of the air inlet pipe and the air outlet pipe. The hollow shielding plate is made of rigid material, and its aperture size will not change with the increase of working time, so that accurate and real noise data can be obtained, effectively avoiding the possibility of detection errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 A three-dimensional diagram of a noise detection device for a blowing and suction machine according to the present invention Figure 1 ;

[0040] Figure 1 It is a structural stereogram of the suction-blowing machine;

[0041] Figure 2 A three-dimensional diagram of the tooling plate of the present invention;

[0042] Figure 3 A three-dimensional diagram of a noise detection device for a blowing and suction machine according to the present invention;

[0043] Figure 4 A three-dimensional diagram of a noise detection device for a blowing and suction machine of the present invention, with a portion of the sound insulation shielding box hidden;

[0044] Figure 5 A front view of a sound insulation shielding box of a noise detection device for a blowing and suction machine according to the present invention, which hides part of the sound insulation shielding box;

[0045] Figure 6 A local stereoscopic view of a noise detection device for a blowing and suction machine according to the present invention Figure 1 ;

[0046] Figure 7 A three-dimensional diagram of the pressurized opening and closing mechanism of the present invention;

[0047] Figure 8 A local stereoscopic view of a noise detection device for a blowing and suction machine according to the present invention Figure 2 ;

[0048] Fig. 9 is a three-dimensional diagram of the rigid air volume control mechanism of the present invention;

[0049] Fig.10 It is a three-dimensional diagram of the multi-point swing detection mechanism of the present invention;

[0050] Fig.11 It is a three-dimensional diagram of the multi-point swing detection mechanism of the present invention.

[0051] The numbers in the figure represent:

[0052] 10. Feeding conveyor; 11. Connecting conveyor; 12. Discharging conveyor; 13. Positioning and blocking assembly; 131. Blocking cylinder; 132. Blocking block; 133. Blocking groove; 2. Suction and blowing machine; 21. Air inlet pipe; 22. Air outlet pipe; 23. Control switch; 24. Shell; 25. Operating handle; 3. Tooling plate; 31. Material placement plate; 32. Profiling positioning groove; 33. Positioning block; 34. Positioning column; 4. Soundproof shielding box; 41. Box inlet; 42. Box outlet; 5. Pressurized opening and closing mechanism; 51. Soundproof shielding door; 52. Upper hinged rod; 53. Lower hinged rod; 54. Support longitudinal rod; 55. Support cross rod; 56. Pressurized drive assembly; 561. Inner slide rail; 562. Outer slide rail; 563. Inner roller; 5 64. Outer roller; 565. Push cylinder; 566. Groove; 6. Multi-point swing detection mechanism; 61. Surrounding moving component; 611. Arc track; 612. Ring gear; 613. Moving plate; 614. Pulley; 615. Servo motor; 616. Gear; 62. Synchronous swing component; 621. Drive column; 622. Cam groove; 623. Deep groove ball bearing; 624. Support arm; 625. Rocker; 7. Rigid air volume control mechanism; 71. Fixed bracket; 72. Vertical moving component; 73. Mounting bracket; 74. Servo linear module; 75. Movable bracket; 76. Hollow shielding plate; 77. Ventilation hole; 8. Switch control component; 81. Switch cylinder; 82. Vertical plate; 83. Push rod; 9. Decibel detector. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0055] Embodiment 1: In some embodiments, please refer to the drawings of the specification Figure 1-Figure 11 , a noise detection device for a blowing and suction machine, comprising a feeding conveyor 10, a connecting conveyor 11, a discharging conveyor 12, a tooling plate 3 and a sound insulation shielding box 4;

[0056] The left and right sides of the sound insulation shielding box 4 are respectively provided with a box inlet 41 and a box outlet 42, and the outer edges of the box inlet 41 and the box outlet 42 are both provided with sealing rings;

[0057] The feed conveyor 10 and the discharge conveyor 12 are respectively located on the left and right sides of the sound insulation shielding box 4, and the connecting conveyor 11 is located inside the sound insulation shielding box 4. The feed conveyor 10, the connecting conveyor 11 and the discharge conveyor 12 all use double-speed chain conveyors, and the three cooperate to move the tooling board 3 from left to right;

[0058] The discharging ends of the feed conveyor 10, the connecting conveyor 11 and the discharging conveyor 12 are all provided with a positioning and blocking assembly 13, which includes a blocking cylinder 131, a block 132 and a blocking groove 133. The blocking cylinder 131 is fixedly installed at the lower end of the double-speed chain conveyor, and the output end of the blocking cylinder 131 is fixedly installed with the block 132. The side of the tooling plate 3 is provided with a blocking groove 133 that matches the block 132; the blocking cylinder 131 controls the lifting of the block 132 to control the blocking positioning of the tooling plate 3 on the conveyor;

[0059] The tooling plate 3 is fixedly mounted with a material placing plate 31, and a contoured positioning groove 32 adapted to the suction-blowing machine 2 is provided on the material placing plate 31; a positioning block 33 for supporting the housing 24 of the suction-blowing machine 2 is fixedly mounted on the material placing plate 31, and a plurality of positioning columns 34 for supporting the operating handle 25 of the suction-blowing machine 2 are fixedly mounted on the tooling plate 3, and pads are provided on the tops of the positioning blocks 33 and the positioning columns 34;

[0060] A switch control assembly 8 is provided at the bottom of the soundproof shielding box 4, and the switch control assembly 8 includes a switch cylinder 81, a vertical plate 82 and a push rod 83. The switch cylinder 81 is fixedly installed at the bottom of the soundproof shielding box 4, and the vertical plate 82 is fixedly installed at the output end of the switch cylinder 81; two push rods 83 are fixedly installed on the top of the vertical plate 82, and the output end of the push rod 83 is used to press the control switch 23 of the suction and blowing machine 2 to control the start and stop of the suction and blowing machine 2.

[0061] The interior of the soundproof shielding box 4 is provided with a multi-point swing detection mechanism 6, which includes a surrounding moving component 61 and a synchronous swing component 62. The surrounding moving component 61 is arranged at the inner bottom of the soundproof shielding box 4, and the moving end of the surrounding moving component 61 is installed with the synchronous swing component 62, and the moving end of the synchronous swing component 62 is provided with a decibel detector 9;

[0062] The interior of the soundproof shielding box 4 is also provided with a rigid air volume control mechanism 7 for simulating the actual working condition of the suction and blowing machine 2;

[0063] The left and right sides of the sound insulation shielding box 4 are respectively provided with a pressurizing opening and closing mechanism 5 for controlling the opening and closing states of the box inlet 41 and the box outlet 42 .

[0064] In the present invention, the feed conveyor 10 conveys the tooling plate 3 equipped with the suction and blowing machine 2 to the right, and the tooling plate 3 passes through the box inlet 41 and enters the connecting conveyor 11 in the sound insulation shielding box 4, and is blocked and positioned by the positioning blocking component 13, and the pressurizing opening and closing mechanism 5 closes the box inlet 41 and the box outlet 42, so that the inside of the sound insulation shielding box 4 is isolated and sealed from the outside;

[0065] The control switch 23 of the suction and blowing machine 2 is triggered by the switch control component 8 to control the suction and blowing machine 2 to start. When the suction and blowing machine 2 reaches its maximum power, the noise generated by the suction and blowing machine 2 is detected by the decibel detector 9, and the decibel detector 9 is driven by the surrounding moving component 61 and the synchronous swinging component 62 to move a large range outside the suction and blowing machine 2, and the suction and blowing machine 2 is noise-detected from multiple points to obtain high-precision noise detection data; then, the air inlet flow and the air outlet flow of the suction and blowing machine 2 are respectively controlled by the rigid air volume control mechanism 7 to simulate the noise generation of the suction and blowing machine 2 under actual working conditions, and the decibel detector 9 is driven by the surrounding moving component 61 and the synchronous swinging component 62 to collect noise data from multiple points; the noise data of the suction and blowing machine 2 is obtained by coordinated analysis of multiple groups of test results, which effectively improves the accuracy and authenticity of the detection results.

[0066] The surrounding moving assembly 61 includes an arc track 611, a gear ring 612, a moving plate 613, a pulley 614, a servo motor 615 and a gear 616. The arc track 611 is fixedly installed on the inner bottom of the sound insulation shielding box 4 and is located on the outer side of the connecting conveyor 11. The gear ring 612 is fixedly connected to the arc track 611; a plurality of pulleys 614 are rotatably installed on the moving plate 613, and the pulleys 614 are distributed on the inner and outer sides of the arc track 611 and are rollingly connected to the arc track 611; the servo motor 615 is fixedly connected to the moving plate 613, and a gear 616 is fixedly installed on the output end of the servo motor 615, and the gear 616 is meshedly connected with the gear ring 612;

[0067] The synchronous swing assembly 62 includes a driving column 621, a cam groove 622, a deep groove ball bearing 623, a support arm 624 and a swing rod 625. The driving column 621 is fixedly connected to the output end of the servo motor 615, and the driving column 621 rotates synchronously with the gear 616; the support arm 624 is fixedly connected to the moving plate 613; the decibel detector 9 is fixedly installed at the lower end of the swing rod 625, the middle part of the swing rod 625 is hinged to the support arm 624, and the upper end of the swing rod 625 is provided with a deep groove ball bearing 623; the side wall of the driving column 621 is provided with a cam groove 622 rollingly connected to the deep groove ball bearing 623;

[0068] In the present invention, the servo motor 615 drives the gear 616 to rotate, and the gear 616 and the gear ring 612 cooperate to drive the movable plate 613 to move around the suction and blowing machine 2 under the limiting action of the arc track 611 and the pulley 614. When the movable plate 613 moves, the servo motor 615 also drives the driving column 621 to rotate, and the deep groove ball bearing 623 moves in the cam groove 622 of the driving column 621, so that the swing rod 625 reciprocates with the hinge point on the support arm 624 as the center of the circle, so that the decibel detector 9 swings left and right while moving around the suction and blowing machine 2, and the suction and blowing machine 2 is tested for noise at multiple points in a wide range to ensure the accuracy and authenticity of the test results, and the servo motor 615 is started at intervals to make the decibel detector 9 stop and go, and the noise is tested when the decibel detector 9 remains stationary, so as to avoid introducing new noise sources during noise testing;

[0069] The rigid air volume control mechanism 7 includes a fixed bracket 71, a vertical moving component 72, a mounting bracket 73, an air inlet flow control component and an air outlet flow control component. The fixed bracket 71 is fixedly mounted on the inner top of the sound insulation shielding box 4. The fixed bracket 71 is provided with a vertical moving component 72, and the driving end of the vertical moving component 72 is fixedly mounted with a mounting bracket 73; the vertical moving component 72 can adopt a cylinder slide rod structure, and the vertical moving component 72 is used to control the vertical movement of the mounting bracket 73; the mounting bracket 73 is provided with an air inlet flow control component and an air outlet flow control component;

[0070] The air inlet flow control assembly and the air outlet flow control assembly have the same structure, both of which include a servo linear module 74, a movable bracket 75 and a hollow shielding plate 76. The servo linear module 74 is fixedly connected to the mounting bracket 73, and the movable bracket 75 is fixedly mounted on the movable end of the servo linear module 74, and the hollow shielding plate 76 is fixedly mounted on the movable bracket 75.

[0071] The hollow shielding plate 76 is made of a metal plate, and is evenly provided with ventilation holes 77; the ventilation holes 77 are provided with various apertures, and the apertures of the ventilation holes 77 on the hollow shielding plate 76 gradually decrease along the length direction of the hollow shielding plate 76;

[0072] Preferably, the air holes 77 can be provided with three sizes: large, medium and small, to achieve simulation effects for different working conditions.

[0073] In the present invention, after the suction and blowing machine 2 is blocked in place on the connecting conveyor 11, the vertical movement component 72 drives the mounting bracket 73 to move vertically downward, so that the hollow baffle plate 76 of the air inlet flow control component is close to the end face of the air inlet pipe 21 and the hollow baffle plate 76 of the air outlet flow control component is close to the end face of the air outlet pipe 22; then the servo linear module 74 drives the hollow baffle plate 76 through the movable bracket 75 to gradually block the air inlet pipe 21 or the air outlet pipe 22, and the aperture of the air permeable through hole 77 is gradually reduced, so that the flow of the air inlet pipe 21 and the air outlet pipe 22 is also gradually reduced, so that the noise generated by the suction and blowing machine 2 when its blockage is gradually aggravated in actual work is simulated by controlling the flow of the air inlet pipe 21 and the air outlet pipe 22, so as to obtain accurate and real noise data.

[0074] The pressurized opening and closing mechanism 5 comprises a soundproofing shielding door 51, an upper hinged rod 52, a lower hinged rod 53, a supporting longitudinal rod 54, a supporting transverse rod 55 and a pressurized driving assembly 56. The soundproofing shielding door 51 is adapted to the box inlet 41 and the box outlet 42; two groups of upper hinged rods 52 are symmetrically distributed on the front and rear sides of the upper end of the soundproofing shielding door 51, and two groups of lower hinged rods 53 are symmetrically distributed on the front and rear sides of the lower end of the soundproofing shielding door 51. The left ends of the upper hinged rod 52 and the lower hinged rod 53 on the same side are both hinged to the soundproofing shielding door 51, and the right ends of the upper hinged rod 52 and the lower hinged rod 53 on the same side are both hinged to the supporting longitudinal rod 54; the soundproofing shielding door 51, the upper hinged rod 52, the lower hinged rod 53 and the supporting longitudinal rod 54 form a parallelogram structure;

[0075] The supporting longitudinal bars 54 on the front and rear sides are fixedly connected by supporting transverse bars 55; the pressurizing driving assembly 56 is arranged at the inner top of the sound insulation shielding box 4, and the pressurizing driving assembly 56 controls the opening and closing state of the sound insulation shielding door 51 and the box inlet 41 or the box outlet 42 by controlling the position of the sound insulation shielding door 51;

[0076] Embodiment 2: In some embodiments, Fig. 9As shown, as a preferred embodiment of the present invention, the pressurized drive assembly 56 includes an inner slide rail 561, an outer slide rail 562, an inner roller 563, an outer roller 564 and a push cylinder 565. The two inner slide rails 561 are symmetrically fixedly installed on the front and rear sides of the inner wall of the soundproof shielding box 4, and the two outer slide rails 562 are also symmetrically fixedly installed on the front and rear sides of the inner wall of the soundproof shielding box 4; the upper hinge rod 52 and the lower hinge rod 53 are hinged with the soundproof shielding door 51 through bearings to rotate with the inner rollers. 563, the hinges of the upper hinge rod 52 and the lower hinge rod 53 with the supporting longitudinal rod 54 are all rotatably mounted with an outer roller 564 through a bearing; the inner roller 563 is rollingly connected to the inner slide rail 561, and the outer roller 564 is rollingly connected to the outer slide rail 562; the lower end of the inner slide rail 561 is provided with a groove 566 for accommodating the inner roller 563 connected to the upper hinge rod 52; the push cylinder 565 is fixedly mounted on the top of the sound insulation shield 4, and the output end of the push cylinder 565 is fixedly connected to the supporting cross bar 55;

[0077] In the present invention, when the tooling plate 3 enters the soundproof shielding box 4 and is in place, the push cylinder 565 drives the supporting cross bar 55 to move vertically downward, so that the outer roller 564 rolls downward in the outer slide rail 562, and the inner roller 563 rolls downward in the inner slide rail 561; when the inner roller 563 connected to the lower hinged rod 53 leaves the inner slide rail 561, the inner roller 563 connected to the upper hinged rod 52 continues to move on the inner slide rail 561, because the parallelogram structure causes the soundproof shielding door 51 to continue to move downward until the inner roller 563 connected to the upper hinged rod 52 moves into the groove 566 of the inner slide rail 561, and the parallelogram structure is deformed, so that the soundproof shielding door 51 is pressed against the box inlet 41 or the box outlet 42, and finally the soundproof shielding door 51 and the sealing ring form a pressurized sealing effect, thereby achieving a closed isolation effect on the soundproof shielding box 4.

[0078] Embodiment 3: In some embodiments, Figure 1-Figure 11 As shown, as a preferred embodiment of the present invention, a detection method of a noise detection device for a blowing and suction machine comprises the following steps:

[0079] Step 1: The feed conveyor 10 conveys the tooling board 3 equipped with the suction and blowing machine 2 to the right, and the tooling board 3 passes through the box entrance 41 and enters the connecting conveyor 11 in the sound insulation shielding box 4, and is blocked and positioned by the positioning blocking component 13;

[0080] Step 2: The push cylinder 565 drives the sound insulation shielding door 51 to move vertically downward, and finally presses the sound insulation shielding doors 51 on both sides toward the box inlet 41 and the box outlet 42 to form a pressurized sealing effect, so that the inside and outside of the sound insulation shielding box 4 are isolated;

[0081] Step 3: triggering the control switch 23 of the suction-blowing machine 2 through the switch control component 8 to start the suction-blowing machine 2;

[0082] Step 4: Start the servo motor 615 to make the moving plate 613 move around the suction and blowing machine 2, and at the same time drive the swing rod 625 to swing back and forth with the hinge point on the support arm 624 as the center of the circle, so that the decibel detector 9 swings left and right while moving around the suction and blowing machine 2, and performs noise detection on the natural intake and suction state of the suction and blowing machine 2 at multiple points in a wide range; and the servo motor 615 is started at intervals to make the decibel detector 9 stop and go, and the noise is detected when the decibel detector 9 remains stationary;

[0083] Step 5: The vertical moving assembly 72 drives the mounting bracket 73 to move vertically downward, so that the hollow shielding plate 76 of the air inlet flow control assembly and the hollow shielding plate 76 of the air outlet flow control assembly respectively shield the air inlet pipe 21 and the air outlet pipe 22;

[0084] Step 6: The servo linear module 74 drives the hollow shielding plate 76 to move through the movable bracket 75, so that the aperture of the air-permeable through hole 77 on the hollow shielding plate 76 facing the air inlet pipe 21 or the air outlet pipe 22 gradually decreases, simulating the noise generated by the suction and blowing machine 2 when the blockage of the air inlet pipe 21 or the air outlet pipe 22 gradually increases in actual work, and the decibel detector 9 monitors the noise value generated by the suction and blowing machine 2 in real time;

[0085] Step 7: After the detection is completed, the suction and blowing machine 2 is turned off through the switch control component 8, the sound insulation shielding door 51 is reset to open the box inlet 41 and the box outlet 42, and the connecting conveyor 11 moves the suction and blowing machine 2 that has completed the noise detection operation to the discharge conveyor 12, and through comprehensive analysis of the noise generated by the suction and blowing machine 2 under different working conditions, it is determined whether the noise of the suction and blowing machine 2 meets the standard.

[0086] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A noise detection device for a blowing and suction machine, comprising a feeding conveyor (10), a connecting conveyor (11), a discharging conveyor (12), a tooling plate (3) and a sound insulation shielding box (4), characterized in that: The left and right sides of the sound insulation shielding box (4) are respectively provided with a box inlet (41) and a box outlet (42), and the outer edges of the box inlet (41) and the box outlet (42) are both provided with sealing rings; The feed conveyor (10) and the discharge conveyor (12) are respectively located on the left and right sides of the sound insulation shielding box (4), and the connecting conveyor (11) is located inside the sound insulation shielding box (4). The three cooperate to move the tooling plate (3) from left to right; The discharge ends of the feed conveyor (10), the connecting conveyor (11) and the discharge conveyor (12) are all provided with a positioning blocking assembly (13) for positioning the tooling plate (3); A switch control component (8) for triggering a control switch (23) of the suction and blowing machine (2) to control the start and stop of the suction and blowing machine (2) is arranged at the bottom of the soundproof shielding box (4); The soundproof shielding box (4) is provided with a multi-point swing detection mechanism (6) inside, the multi-point swing detection mechanism (6) comprising a surrounding moving component (61) and a synchronous swing component (62), the surrounding moving component (61) is arranged at the inner bottom of the soundproof shielding box (4), the moving end of the surrounding moving component (61) is installed with the synchronous swing component (62), and the moving end of the synchronous swing component (62) is provided with a decibel detector (9); The soundproof shielding box (4) is also provided with a rigid air volume control mechanism (7) for simulating the working conditions of the suction and blowing machine (2) with different air inlet and outlet resistances; The left and right sides of the sound insulation shielding box (4) are respectively provided with a pressurizing opening and closing mechanism (5) for controlling the opening and closing states of the box inlet (41) and the box outlet (42).

2. The noise detection device for a blowing and suction machine according to claim 1, characterized in that: The surrounding moving component (61) comprises an arc track (611), a gear ring (612), a moving plate (613), a pulley (614), a servo motor (615) and a gear (616); the arc track (611) is fixedly mounted on the inner bottom of the sound insulation shielding box (4) and located on the outer side of the connecting conveyor (11); the gear ring (612) is fixedly connected to the arc track (611); a plurality of pulleys (614) are rotatably mounted on the moving plate (613); the pulleys (614) are distributed on the inner side and the outer side of the arc track (611) and are rollingly connected to the arc track (611); the servo motor (615) is fixedly connected to the moving plate (613); a gear (616) is fixedly mounted on the output end of the servo motor (615); and the gear (616) is meshingly connected to the gear ring (612).

3. The noise detection device for a blowing and suction machine according to claim 2, characterized in that: The synchronous swing component (62) comprises a driving column (621), a cam groove (622), a deep groove ball bearing (623), a support arm (624) and a swing rod (625); the driving column (621) is fixedly connected to the output end of the servo motor (615); the driving column (621) rotates synchronously with the gear (616); the support arm (624) is fixedly connected to the moving plate (613); a decibel detector (9) is fixedly installed at the lower end of the swing rod (625); the middle part of the swing rod (625) is hinged to the support arm (624); the upper end of the swing rod (625) is provided with a deep groove ball bearing (623); and the side wall of the driving column (621) is provided with a cam groove (622) rollingly connected to the deep groove ball bearing (623).

4. The noise detection device for a blowing and suction machine according to claim 3, characterized in that: The rigid air volume control mechanism (7) comprises a fixed bracket (71), a vertical movement component (72), a mounting bracket (73), an air inlet flow control component and an air outlet flow control component; the fixed bracket (71) is fixedly mounted on the inner top of the sound insulation shielding box (4); the fixed bracket (71) is provided with a vertical movement component (72); the driving end of the vertical movement component (72) is fixedly mounted with the mounting bracket (73); the vertical movement component (72) is used to control the vertical movement of the mounting bracket (73); the mounting bracket (73) is provided with an air inlet flow control component and an air outlet flow control component.

5. The noise detection device for a blowing and suction machine according to claim 4, characterized in that: The air inlet flow control assembly and the air outlet flow control assembly have the same structure, and both comprise a servo linear module (74), a movable bracket (75) and a hollow shielding plate (76); the servo linear module (74) is fixedly connected to the mounting bracket (73); the movable bracket (75) is fixedly mounted on the movable end of the servo linear module (74); and the hollow shielding plate (76) is fixedly mounted on the movable bracket (75).

6. The noise detection device for a blowing and suction machine according to claim 5, characterized in that: The hollow shielding plate (76) is made of a metal plate, and ventilation holes (77) are evenly arranged on the hollow shielding plate (76); the apertures of the ventilation holes (77) on the hollow shielding plate (76) gradually decrease along the length direction of the hollow shielding plate (76).

7. The noise detection device for a blowing and suction machine according to claim 6, characterized in that: The pressurized opening and closing mechanism (5) comprises a soundproofing shielding door (51), an upper hinged rod (52), a lower hinged rod (53), a supporting longitudinal rod (54), a supporting transverse rod (55) and a pressurized driving assembly (56); the soundproofing shielding door (51) is adapted to the box inlet (41) and the box outlet (42); two groups of upper hinged rods (52) are symmetrically distributed on the front and rear sides of the upper end of the soundproofing shielding door (51); and two groups of lower hinged rods (53) are symmetrically distributed on the front and rear sides of the upper end of the soundproofing shielding door (51). 3) symmetrically distributed on the front and rear sides of the lower end of the soundproofing shielding door (51), the left ends of the upper hinged rod (52) and the lower hinged rod (53) on the same side are both hinged to the soundproofing shielding door (51), and the right ends of the upper hinged rod (52) and the lower hinged rod (53) on the same side are both hinged to the supporting longitudinal rod (54); the soundproofing shielding door (51), the upper hinged rod (52), the lower hinged rod (53) and the supporting longitudinal rod (54) form a parallelogram structure; The supporting longitudinal bars (54) on the front and rear sides are fixedly connected via supporting transverse bars (55); a pressurizing driving assembly (56) is arranged at the inner top of the sound insulation shielding box (4); and the pressurizing driving assembly (56) controls the opening and closing state of the sound insulation shielding door (51) and the box inlet (41) or the box outlet (42) by controlling the position of the sound insulation shielding door (51).

8. The noise detection device for a blowing and suction machine according to claim 7, characterized in that: The pressurizing drive assembly (56) comprises an inner slide rail (561), an outer slide rail (562), an inner roller (563), an outer roller (564) and a push cylinder (565). The two inner slide rails (561) are symmetrically fixedly mounted on the front and rear sides of the inner wall of the soundproof shielding box (4). The two outer slide rails (562) are also symmetrically fixedly mounted on the front and rear sides of the inner wall of the soundproof shielding box (4). The inner roller (563) is rotatably mounted at the hinged joints of the upper hinged rod (52) and the lower hinged rod (53) with the soundproof shielding door (51) via bearings. 2) and the hinged joints of the lower hinged rod (53) and the supporting longitudinal rod (54) are rotatably mounted with an outer roller (564) through a bearing; the inner roller (563) is rollingly connected to the inner slide rail (561), and the outer roller (564) is rollingly connected to the outer slide rail (562); a groove (566) for accommodating the inner roller (563) connected to the upper hinged rod (52) is provided at the lower end of the inner slide rail (561); a push cylinder (565) is fixedly mounted on the top of the sound insulation shield (4), and an output end of the push cylinder (565) is fixedly connected to the supporting cross bar (55).

9. The noise detection device for a blowing and suction machine according to claim 1, characterized in that: A material placement plate (31) is fixedly mounted on the tooling plate (3), and a contoured positioning groove (32) matching the suction-blowing machine (2) is formed on the material placement plate (31); a positioning block (33) for supporting a housing (24) of the suction-blowing machine (2) is fixedly mounted on the material placement plate (31); a plurality of positioning columns (34) for supporting an operating handle (25) of the suction-blowing machine (2) are fixedly mounted on the tooling plate (3), and pads are arranged on the tops of the positioning blocks (33) and the positioning columns (34).

10. A detection method, using the noise detection device for a blowing and suction machine according to claim 8, characterized in that: The following steps are involved: Step 1: The feed conveyor (10) conveys the tooling plate (3) equipped with the suction and blowing machine (2) to the right, and the tooling plate (3) passes through the box entrance (41) and enters the connecting conveyor (11) in the sound insulation shielding box (4), and is blocked and positioned by the positioning blocking component (13); Step 2: The push cylinder (565) drives the soundproof shielding door (51) to move vertically downward, and finally the soundproof shielding doors (51) on both sides are pressed against the box inlet (41) and the box outlet (42) to form a pressurized sealing effect, so that the inside and outside of the soundproof shielding box (4) are isolated; Step 3: triggering the control switch (23) of the suction-blowing machine (2) through the switch control component (8) to start the suction-blowing machine (2); Step 4: Start the servo motor (615) to move the movable plate (613) around the suction and blowing machine (2), and at the same time drive the swing rod (625) to swing back and forth with the hinge point on the support arm (624) as the center of the circle, so that the decibel detector (9) swings left and right while moving around the suction and blowing machine (2), and the noise of the natural air intake and air suction state of the suction and blowing machine (2) is detected at multiple points in a wide range; and the servo motor (615) is started at intervals to make the decibel detector (9) stop and go, and the noise is detected when the decibel detector (9) remains stationary; Step 5: The vertical movement component (72) drives the mounting bracket (73) to move vertically downward, so that the hollow shielding plate (76) of the air inlet flow control component and the hollow shielding plate (76) of the air outlet flow control component respectively shield the air inlet pipe (21) and the air outlet pipe (22); Step 6: The servo linear module (74) drives the hollow shielding plate (76) to move through the movable bracket (75), so that the aperture of the air-permeable through hole (77) on the hollow shielding plate (76) facing the air inlet pipe (21) or the air outlet pipe (22) gradually decreases, simulating the noise generated by the suction and blowing machine (2) when the blockage of the air inlet pipe (21) or the air outlet pipe (22) gradually increases during actual operation, and the decibel detector (9) monitors the noise value generated by the suction and blowing machine (2) in real time; Step 7: After the detection is completed, the suction and blowing machine (2) is turned off through the switch control component (8), the soundproof shielding door (51) is reset to open the box entrance (41) and the box exit (42), the connecting conveyor (11) moves the suction and blowing machine (2) that has completed the noise detection operation to the discharge conveyor (12), and through comprehensive analysis of the noise generated by the suction and blowing machine (2) under different working conditions, it is determined whether the noise of the suction and blowing machine (2) meets the standard.

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