Noise detection device for belt

Abstract

The invention discloses a noise detection device for a belt, and relates to the technical field of belt noise detection, the noise detection device comprises a rack, the inner side of the end part of the rack is rotatably connected with a first roller, the outer side of the end part of the rack is fixedly connected with a driving box, and the outer side of the driving box is fixedly connected with a driving motor. According to the noise detection device for the belt, through the arrangement of the vehicle body, the rack, the sound detector, the sleeve and the supporting frame, the noise detection device moves along with the vehicle body, and the to-be-detected belt is horizontally parallel; the first shielding case and the second shielding case are rotated and move along with the vehicle body and the supporting frame, the first shielding case opening and the second shielding case opening are located on the opposite faces, and the belt to be detected is inclined and parallel. The top of the third telescopic air cylinder is sleeved with a supporting frame through a sleeve, the supporting frame moves along with the supporting frame, the to-be-detected belt is vertically parallel, and a sound detector detects the to-be-detected belt in the horizontal direction, the inclined direction and the vertical direction; the functionality of the detection device is improved, and the working efficiency and accuracy of noise detection of the to-be-detected belt are improved.

Description

Technical Field

[0001] The invention relates to the technical field of belt noise detection, and in particular to a belt noise detection device. Background Art

[0002] Belts have become the transmission choice for most mechanical equipment due to their good elasticity, smooth operation and impact mitigation. At the same time, in most areas where belts are used, there are precise requirements for the decibel level of noise generated by belt operation. Therefore, after the belts are produced, the noise of the belts needs to be tested. At present, the detection device has single functionality and limitations, which reduces the working efficiency of belt noise detection and affects the belt noise detection effect and the accuracy of detection data. In order to solve the shortcomings of the existing technology, we propose a belt noise detection device. Summary of the invention

[0003] The main purpose of the present invention is to provide a noise detection device for a belt, which can effectively solve the problems in the background technology.

[0004] To achieve the above object, the technical solution adopted by the present invention is: A noise detection device for a belt, comprising a frame, wherein the inner side of the frame end is rotatably connected to a roller, the outer side of the frame end is fixedly connected to a drive box, the outer side of the drive box is fixedly connected to a drive motor, a shielding cover is arranged on the outer side of the No. 1 roller, the shielding cover is rotatably connected to the inner side of the frame end, a handle and a positioning device are arranged on the outer side of the shielding cover, a body is arranged on the end of the frame away from the shielding cover, a telescopic cylinder and a balancing assembly are installed between the body and the frame, a support frame is detachably connected to the inner side of the body, a second shielding cover is rotatably connected to the inner side of the support frame, and the shielding cover rotates inside A No. 2 roller is connected, a belt to be tested is sleeved between the No. 1 roller and the No. 2 roller, a handle and a positioning device are also provided on the outside of the No. 2 shielding cover, a plurality of cylinders are fixedly connected to the upper surface of the vehicle body, the support frame is slidably connected on the surface of the cylinder, a No. 2 telescopic cylinder is fixedly connected to the bottom of the vehicle body, the top of the No. 2 telescopic cylinder passes through the vehicle body and is detachably connected to the bottom of the support frame, a sleeve is fixedly connected to the side of the support frame, a No. 3 telescopic cylinder is fixedly connected to the top of the drive box, the sleeve is embedded with the output end of the No. 3 telescopic cylinder, a sound detector is installed inside the No. 1 shielding cover, and the No. 2 shielding cover is also provided with a sound detector; A box is provided on the side of the belt to be tested, a rotating rod is rotatably connected inside the box, the head end of the rotating rod passes through the box and the end is rotatably connected to a circular cover, a turntable is rotatably connected inside the circular cover, a plurality of knocking rods are fixedly connected to the surface of the turntable, a clicker is fixedly connected to the inner wall of the circular cover, the knocking rods are engaged with the clicker, a driving wheel is fixedly connected to the surface of the rotating rod, a rack is provided on the side of the driving wheel, the rack is slidably connected to the side wall of the box, a No. 4 reset spring is installed between the outer side of the rack and the top of the box, and a clip is fixedly connected to the bottom end of the rack.

[0005] Preferably, the side of the No. 1 shielding cover is rotatably connected to a side cover, the inner side of the frame end is rotatably connected to a support plate, the No. 1 roller is rotatably connected to the inner side of the support plate, a connecting groove is provided on the side of the support plate close to the side cover, and a connecting block is fixedly connected to the inner side of the side cover.

[0006] Preferably, a blocking ring is sleeved on the surface of the No. 1 roller, the blocking ring is symmetrically arranged, a moving block is installed on the side of the blocking ring, a moving groove is opened on the surface of the support plate, a screw rod is arranged on the side of the moving groove, and the moving block passes through the moving groove and is sleeved on the surface of the screw rod.

[0007] Preferably, a plurality of No. 1 grooves are provided on the inner side of the blocking ring, an extension plate is slidably connected in the No. 1 groove, a No. 1 return spring is installed between the extension plate and the No. 1 groove, the end of the moving block is rotatably connected to the side end of the blocking ring, a No. 1 long plate is fixedly connected to the side end of the blocking ring, a No. 2 groove is provided on the inner side of the No. 1 long plate, a No. 2 groove is slidably connected to a limiting rod, and a limiting component is installed on the surface of the limiting rod.

[0008] Preferably, the limiting assembly includes a fixed cylinder, which is fixedly connected to the middle part of the limiting rod, a fixed rod is slidably connected inside the fixed cylinder, a No. 2 return spring is sleeved on the surface of the fixed rod, a control rod is fixedly connected to the head end of the fixed rod, a No. 3 groove is opened on the outer surface of the fixed cylinder, the end of the control rod is embedded in the No. 3 groove, and a transition block is fixedly connected to the middle part of the movable groove.

[0009] Preferably, the positioning device includes a movable groove, which is opened inside the No. 1 shielding cover, and a positioning rod is slidably connected in the movable groove. The positioning rods are symmetrically arranged, and guide rods are arranged at the opposite surfaces of the positioning rods. A No. 3 return spring is sleeved on the surface of the guide rod, and a protrusion block is fixedly connected to the end of the positioning rod. A positioning groove is opened on the inner side of the end of the frame, and the head end of the positioning rod is embedded in the positioning groove.

[0010] Preferably, a concave-convex groove is formed at the head end of the positioning rod, a plurality of clamping blocks are fixedly connected to the inner wall of the positioning groove, and the cross-sectional shape of the clamping blocks is set to be a triangle.

[0011] Preferably, a mounting plate is detachably connected to the surface of the belt to be tested, and a frame is fixedly connected to the upper surface of the mounting plate.

[0012] Preferably, a telescopic rod is rotatably connected between the first shielding cover and the second shielding cover.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the vehicle body, frame, No. 1 shielding cover, No. 2 shielding cover, sound detector, sleeve and support frame are arranged, and the top and bottom of the belt to be tested are horizontally parallel with each other, so that the belt to be tested runs in the horizontal direction; the No. 1 shielding cover and the No. 2 shielding cover can also be rotated, and adjusted with the vehicle body and the support frame, the opening of the No. 1 shielding cover and the opening of the No. 2 shielding cover are on opposite surfaces, and the top and bottom of the belt to be tested are inclined and parallel with each other, so that the belt to be tested runs in an inclined direction; the support frame can also be sleeved on the top of the No. 3 telescopic cylinder through the sleeve, and move with the support frame, the top and bottom of the belt to be tested are vertically parallel with each other, so that the belt to be tested runs in an inclined direction, and the sound detector can detect the belt to be tested in the horizontal, inclined and vertical directions; it is beneficial to improve the functionality of the detection device, and it is beneficial to improve the work efficiency and accuracy of the noise detection of the belt to be tested.

[0014] 2. In the present invention, by providing a positioning device, a vehicle body and a support frame, the No. 1 shielding cover is rotated forwardly on the inner side of the frame end by a handle, and the No. 2 shielding cover is rotated reversely on the inner side of the support frame by a handle, until the opening of the No. 1 shielding cover and the opening of the No. 2 shielding cover are on opposite surfaces, and then the positions of the No. 1 shielding cover and the No. 2 shielding cover are fixed by the positioning device, so that the belt to be tested can be detected at multiple angles in an inclined direction, which is beneficial to improving the accuracy of noise detection of the belt to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the detection device of the present invention; Figure 2 It is a schematic diagram of the related structure of the side cover of the present invention; Figure 3 It is a schematic diagram of the related structure of shielding cover No. 1 of the present invention; Figure 4 It is a schematic diagram of the relevant structure of the positioning device of the present invention; Figure 5 It is a schematic diagram of the structure related to the screw rod of the present invention; Figure 6 It is a schematic diagram of the structure related to the connection groove of the present invention; Figure 7 It is a schematic diagram of the structure of the first longboard of the present invention; Figure 8 It is a schematic diagram of the related structure of the fixed cylinder of the present invention; Fig. 9 It is a schematic diagram of the relevant structure of the circular cover of the present invention; Fig.10 It is a schematic diagram of the relevant structure of the mounting plate of the present invention; Fig.11 It is a schematic diagram of the relevant structure of the vehicle body of the present invention; Fig.12 It is a schematic diagram of the related structure of the blocking ring of the present invention.

[0016] In the figure: 1. Frame; 11. Drive box; 12. Drive motor; 13. Telescopic cylinder No. 1; 14. Balance assembly; 15. Telescopic cylinder No. 3; 16. Return spring No. 4; 17. Clip; 2. Shield cover No. 1; 21. Roller No. 1; 22. Handle; 23. Side cover; 24. Support plate; 25. Connecting groove; 26. Connecting block; 3. Positioning device; 31. Movable groove; 32. Positioning rod; 33. Guide rod; 34. Return spring No. 3; 35. Raised block; 36. Positioning groove; 37. Concave-convex groove; 38. Block; 4. Car body; 41. Support frame; 42. Cylinder; 43. Telescopic cylinder No. 2; 44. Casing; 5. No. 2 shielding cover; 51, No. 2 roller; 6, belt to be tested; 61, mounting plate; 62, frame; 63, telescopic rod; 7, blocking ring; 71, moving block; 72, moving slot; 73, screw rod; 74, No. 1 slot; 75, extension plate; 76, No. 1 reset spring; 77, No. 1 long plate; 78, No. 2 slot; 8, limit rod; 81, limit assembly; 82, fixing cylinder; 83, fixing rod; 84, No. 2 reset spring; 85, control rod; 86, No. 3 slot; 87, transition block; 9, box; 91, rotating rod; 92, round cover; 93, turntable; 94, knocking rod; 95, clicker; 96, driving wheel; 97, rack. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0018] A noise detection device for a belt comprises a frame 1, wherein the inner side of the end of the frame 1 is rotatably connected to a No. 1 roller 21, the outer side of the end of the frame 1 is fixedly connected to a drive box 11, the outer side of the drive box 11 is fixedly connected to a drive motor 12, a No. 1 shielding cover 2 is arranged on the outer side of the No. 1 roller 21, the No. 1 shielding cover 2 is rotatably connected to the inner side of the end of the frame 1, a handle 22 and a positioning device 3 are arranged on the outer side of the No. 1 shielding cover 2, a car body 4 is arranged at one end of the frame 1 away from the No. 1 shielding cover 2, a No. 1 telescopic cylinder 13 and a balancing assembly 14 are installed between the car body 4 and the frame 1, a support frame 41 is detachably connected to the inner side of the car body 4, a No. 2 shielding cover 5 is rotatably connected to the inner side of the support frame 41, and the No. 2 shielding cover 5 is rotatably connected to the inner side. There is a No. 2 roller 51, a belt 6 to be tested is sleeved between the No. 1 roller 21 and the No. 2 roller 51, a handle 22 and a positioning device 3 are also provided on the outside of the No. 2 shielding cover 5, a plurality of cylinders 42 are fixedly connected to the upper surface of the vehicle body 4, a support frame 41 is slidably connected to the surface of the cylinder 42, a No. 2 telescopic cylinder 43 is fixedly connected to the bottom of the vehicle body 4, the top of the No. 2 telescopic cylinder 43 passes through the vehicle body 4 and is detachably connected to the bottom of the support frame 41, a sleeve 44 is fixedly connected to the side of the support frame 41, a No. 3 telescopic cylinder 15 is fixedly connected to the top of the drive box 11, and the sleeve 44 is embedded with the output end of the No. 3 telescopic cylinder 15, a sound detector is installed inside the No. 1 shielding cover 2, and the No. 2 shielding cover 5 is also provided with a sound detector; like Figure 1-Figure 2 As shown, the housing of the driving motor 12 is fixedly connected to the outer surface of the driving box 11, the output end of the driving motor 12 extends into the driving box 11, and the shaft of the No. 1 roller 21 passes through the inner side of the end of the frame 1 and extends into the driving box 11. The driving box 11 is provided with gears that mesh with each other, and the output end of the driving motor 12 and the end of the shaft of the No. 1 roller 21 are both equipped with gears, so that the driving motor 12 drives the No. 1 roller 21 to rotate through the driving box 11; like Figure 1-Figure 3 As shown, the No. 1 shielding cover 2 covers the outer side of the No. 1 roller 21, and the No. 2 shielding cover 5 also covers the outer side of the No. 2 roller 51. The No. 1 shielding cover 2 can be driven to rotate inside the end of the machine body through the handle 22. The positioning device 3 is used to control the rotation angle of the No. 1 shielding cover 2 and fix the position of the No. 1 shielding cover 2. Similarly, the No. 2 shielding cover 5 is also provided with a handle 22 and a positioning device 3, which can control the No. 2 shielding cover 5 to rotate inside the support frame 41. The No. 1 shielding cover 2 and the No. 2 shielding cover 5 are opened at the opposite surface; at the same time, the No. 1 shielding cover 2 and the No. 2 shielding cover 5 contain sound insulation materials, such as sound-absorbing cotton, rock wool and foam plastics, so as to reduce the interference of external sounds with belt noise detection; like Figure 1As shown, the No. 1 telescopic cylinder 13 is fixedly connected to the side of the frame 1, and the output end of the No. 1 telescopic cylinder 13 is detachably connected to the surface of the vehicle body 4 on the same side. The No. 1 telescopic cylinder 13 is used to control the distance between the vehicle body 4 and the frame 1. Symmetrical wheels are installed at the bottom of the vehicle body 4, and the wheels are equipped with brake components. When the vehicle body 4 moves, the brake components are closed, and conversely, when the vehicle body 4 is stationary, the brake components are opened, so as to facilitate the movement and parking of the vehicle body 4. At the same time, the balancing component 14 includes a balancing block and a balancing rod. The balancing block is fixedly connected to the end of the top of the side of the frame 1, the head end of the balancing rod passes through the balancing block and the balancing rod is slidably connected to the side of the frame 1, and the head end of the balancing rod is detachably connected to the top surface of the vehicle body 4 on the same side. When the No. 1 telescopic cylinder 13 is started, the balancing rod can be installed on the top surface of the vehicle body 4, so that the balancing rod moves continuously with the extension of the No. 1 telescopic cylinder 13, which is beneficial to improve the stability of the movement of the vehicle body 4. like Figure 1 and Fig.11 As shown, the second roller 51 is installed on the upper surface of the vehicle body 4. As the vehicle body 4 continues to move, the second roller 51 will continuously pull the belt 6 to be tested. At this time, the second roller 51 is equivalent to a tensioner structure, thereby adjusting the tension of the belt 6 to be tested; like Figure 1-Figure 2 As shown and Fig.11 As shown, two cylinders 42 are symmetrically arranged on one side of the support frame 41, and the top of the second telescopic cylinder 43 is located on the other side of the support frame 41, thereby forming a triangular stable structure to improve the stability of the support frame 41 moving above the vehicle body 4. When the second telescopic cylinder 43 is started, the second telescopic cylinder 43 can drive the support frame 41 to move up and down along the cylinder 42. During the movement, the support frame 41 never leaves the cylinder 42. like Fig.11 As shown, the support frame 41 is detachably connected to the top of the No. 2 telescopic cylinder 43, and the support frame 41 can be removed from the upper surface of the vehicle body 4. At the same time, a plurality of sleeves 44 can be arranged on the side of the support frame 41, and a plurality of No. 3 telescopic cylinders 15 can be arranged correspondingly, which is conducive to improving the stability of the No. 3 telescopic cylinder 15 driving the support frame 41 to move up and down; The sound detector is used to detect the noise generated when the belt is running. The sound detector includes a microphone, a sound level meter and a control device. Multiple microphones are installed inside the No. 1 shielding cover 2 and the No. 2 shielding cover 5 respectively, and the installation position is close to the No. 1 roller 21 or the No. 2 roller 51, and then connected to the sound level meter through a data line. The sound level meter stores the qualified belt noise decibel value, which is called the pre-stored value. The noise decibel value input through the microphone is called the detection value. The control device will compare the pre-stored value and the detection value. If the detection value is less than the pre-stored value, the noise generated by the belt operation is within an acceptable range. Conversely, if the detection value is greater than the pre-stored value, the noise generated by the belt operation is within an unacceptable range.

[0019] In this embodiment, the side of the No. 1 shielding cover 2 is rotatably connected to the side cover 23, the inner side of the end of the frame 1 is rotatably connected to the support plate 24, the No. 1 roller 21 is rotatably connected to the inner side of the support plate 24, a connecting groove 25 is provided on the side of the support plate 24 close to the side cover 23, and a connecting block 26 is fixedly connected to the inner side of the side cover 23.

[0020] like Figure 1-Figure 3 As shown, a torsion spring is provided at the rotation point of the No. 1 shielding cover 2 and the side cover 23, and an opening is provided on the side of the No. 1 shielding cover 2. Initially, the side cover 23 overlaps with the side opening of the No. 1 shielding cover 2. When the tested belt 6 needs to be replaced, the bottom end of the side cover 23 is pulled to make the top end of the side cover 23 rotate around the No. 1 shielding cover 2, so that the side opening of the No. 1 shielding cover 2 is opened. At the same time, the No. 2 shielding cover 5 is also provided with a side cover 23, so that the No. 1 roller 21 and the No. 2 roller 51 are exposed. The tested belt 6 is in the shape of a ring, so that the two sides of the tested belt 6 are conveniently connected to the No. 1 roller 21 and the No. 2 roller 51. The surface of the roller 51 is conducive to improving the convenience of replacing the belt 6 to be tested; one side of the support plate 24 is rotatably connected to the inner side of the side end of the frame 1, and the other side is clamped with the side cover 23 through the connecting block 26 and the connecting groove 25, which is convenient for the side cover 23 to open normally. The support plate 24 is used to support the normal operation of the No. 1 roller 21 and the No. 2 roller 51, and at the same time, it can also ensure that the No. 1 shielding cover 2 rotates on the inner side of the end of the frame 1, and ensure that the No. 2 shielding cover 5 rotates normally on the inner side of the support frame 41. When the belt 6 to be tested is running, the belt 6 to be tested is never in contact with the surface of the support plate 24.

[0021] In this embodiment, a blocking ring 7 is sleeved on the surface of the first roller 21, and the blocking ring 7 is symmetrically arranged. A moving block 71 is installed on the side of the blocking ring 7. A moving groove 72 is opened on the surface of the support plate 24, and a screw rod 73 is arranged on the side of the moving groove 72. The moving block 71 passes through the moving groove 72 and is sleeved on the surface of the screw rod 73. like Figure 3-Figure 6 As shown, the belt 6 to be tested is sleeved on the surface of the No. 1 roller 21 and is located between the blocking rings 7, so that the blocking rings 7 limit the position of the belt 6 to be tested on the No. 1 roller 21, reducing the occurrence of the belt 6 to be tested being separated from the No. 1 roller 21. The surface of the screw rod 73 is provided with thread marks, and the thread marks are distributed from the middle part of the screw rod 73 to both sides, and the thread marks rotate in opposite directions. At the same time, a rotating head is provided at one end of the screw rod 73 close to the side cover 23, and two moving blocks 71 are respectively sleeved on both sides of the screw rod 73. Nuts are installed on the inner side of the moving blocks 71, and the nuts are engaged with the corresponding thread marks. like Figure 5-Figure 6As shown, when the rotating head is rotated, the screw rod 73 rotates on the outside of the support plate 24, so that the two moving blocks 71 are moved closer or farther away from each other on the surface of the screw rod 73, and the side end of the moving block 71 passes through the moving groove 72 and is connected to the side end of the blocking ring 7, so the blocking ring 7 moves synchronously with the moving block 71, thereby changing the spacing between the symmetrical blocking rings 7. Similarly, the surface of the second roller 51 is also provided with the same structure as above, so that it can adapt to the belts 6 to be tested of different specifications, which is beneficial to improve the practicality of the detection device.

[0022] In this embodiment, a plurality of No. 1 grooves 74 are provided on the inner side of the blocking ring 7, an extension plate 75 is slidably connected in the No. 1 groove 74, a No. 1 return spring 76 is installed between the extension plate 75 and the No. 1 groove 74, an end of the moving block 71 is rotatably connected to the side end of the blocking ring 7, a No. 1 long plate 77 is fixedly connected to the side end of the blocking ring 7, a No. 2 groove 78 is provided on the inner side of the No. 1 long plate 77, a No. 2 groove 78 is slidably connected inside the No. 2 groove 78, and a limit rod 8 is slidably connected inside the limit rod 8, and a limit assembly 81 is installed on the surface of the limit rod 8; like Fig.12 As shown, the first grooves 74 are evenly spaced on the inner side of the blocking ring 7, and the extension plate 75 slides in the corresponding first grooves 74. The movement of the extension plate 75 can change the size of the inner ring opening of the blocking ring 7. Under the action of the first return spring 76, the end of the extension plate 75 is always in contact with the surface of the first roller 21. like Figure 7 As shown, a notch is provided at the end of the moving block 71, and the notch port is rotatably connected to the side end of the blocking ring 7, and the side end of the No. 1 long plate 77 is fixedly connected to the side end of the blocking ring 7, and the remaining part of the No. 1 long plate 77 is located in the notch, and the remaining part of the No. 1 long plate 77 rotates in the notch as the blocking ring 7 rotates; like Figure 5-Figure 7 As shown, a limit rod 8 is arranged between the symmetrical blocking rings 7, and the end of the limit rod 8 is slidably connected in the second groove 78, wherein the limit assembly 81 is used to control the moving distance of the limit rod 8 and fix the position of the limit rod 8; wherein, similarly, the surface of the second roller 51 is also provided with the above structure; like Figure 3-Figure 7 As shown and Fig.12As shown, during operation, the limit rod 8 is pushed horizontally to move, so that the end of the limit rod 8 is slidably connected in the mouth of the second groove 78, and at the same time, the limit rod 8 also pushes the No. 1 long plate 77 to rotate, so that the No. 1 long plate 77 drives the blocking ring 7 to rotate around the end of the moving block 71, so that the blocking ring 7 changes from vertical to inclined on the surface of the No. 1 roller 21, wherein under the action of the No. 1 reset spring 76, the extension plate 75 can adaptively adjust the length so that the bottom end of the extension plate 75 is always in contact with the surface of the No. 1 roller 21, so that the belt 6 to be tested can simulate the misalignment state on the detection device, and then the noise generated by the operation of the belt 6 to be tested is collected, tested and analyzed by the sound detector, so as to effectively control the noise generated by the operation of the belt 6 to be tested, which is beneficial to improve the detection effect of the detection device on the noise of the belt 6 to be tested.

[0023] In this embodiment, the limiting assembly 81 includes a fixed cylinder 82, which is fixedly connected to the middle part of the limiting rod 8, a fixed rod 83 is slidably connected inside the fixed cylinder 82, a No. 2 return spring 84 is sleeved on the surface of the fixed rod 83, a control rod 85 is fixedly connected to the head end of the fixed rod 83, a No. 3 groove 86 is opened on the outer surface of the fixed cylinder 82, the end of the control rod 85 is embedded in the No. 3 groove 86, and a transition block 87 is fixedly connected to the middle part of the movable groove 72; like Figure 8 As shown, the end of the fixing rod 83 passes through the fixing tube 82 and is engaged with the limiting hole, a No. 2 return spring 84 is sleeved on the concave part of the fixing rod 83, a protruding rod is provided on the side of the control rod 85 close to the fixing tube 82, and the end of the protruding rod is engaged with the No. 3 groove 86, and a plurality of notches are provided on the inner side of the transition block 87, which are engaged with the end of the fixing rod 83, wherein the screw rod 73 is rotatable inside the transition block 87; like Figure 5-Figure 8 As shown, when it is necessary to move the limit rod 8, the head end of the control rod 85 is pulled outward, the fixed rod 83 moves in the fixed tube 82, and the end of the fixed rod 83 is pulled out of the notch on the inner side of the transition plate. At the same time, the protruding rod end on the control rod 85 is also separated from the third groove 86, and the second return spring 84 is in tension, so that the limit rod 8 can move between the symmetrical blocking rings 7; at the same time, by changing the moving position of the limit rod 8, the rotation angle of the first long plate 77 can be changed, thereby affecting the inclination angle of the blocking plate on the surface of the first roller 21 or the second roller 51, and different degrees of misalignment can be simulated, so that an effective noise control strategy can be formulated; like Figure 5-Figure 8 As shown, when it is necessary to fix the limit rod 8, loosen the head end of the control rod 85, and under the action of the No. 2 return spring 84, the end of the fixing rod 83 is inserted into the groove on the inner side of the transition plate, and the protruding rod end on the control rod 85 is also inserted into the No. 3 groove 86, so as to fix the position of the limit rod 8.

[0024] In this embodiment, the positioning device 3 includes a movable groove 31, which is opened inside the No. 1 shielding cover 2, and a positioning rod 32 is slidably connected in the movable groove 31. The positioning rods 32 are symmetrically arranged, and a guide rod 33 is arranged at the opposite surface of the positioning rod 32. The surface of the guide rod 33 is sleeved with a No. 3 return spring 34, and the end of the positioning rod 32 is fixedly connected to a protruding block 35. A positioning groove 36 is opened on the inner side of the end of the frame 1, and the head end of the positioning rod 32 is engaged with the positioning groove 36; Figure 1-Figure 4 As shown, the protruding block 35 extends out of the movable groove 31. If the two protruding blocks 35 are pushed to move toward each other, the protruding blocks 35 drive the positioning rod 32 to approach each other, the No. 3 return spring 34 is compressed, and the end of the positioning rod 32 moves toward the movable groove 31 until the end of the positioning rod 32 is separated from the positioning groove 36, so that the No. 1 shielding cover 2 can rotate inside the side end of the frame 1. On the contrary, after the No. 1 shielding cover 2 is rotated to a suitable position, the two protruding blocks 35 are released, and the two protruding blocks 35 will move oppositely in the movable groove 31, and the end of the positioning rod 32 is stuck in the positioning groove 36, so as to fix the position of the No. 1 shielding cover 2. Similarly, the No. 2 shielding cover 5 is also installed with the above structure, and the working steps are the same; like Figure 4 As shown, one side of the guide rod 33 is fixedly connected to the positioning rod 32, and the other side of the guide rod 33 is slidably connected to the opposite positioning rod 32, so as to limit the moving direction of the symmetrical positioning rod 32 in the movable groove 31, which is beneficial to improve the stability of the movement of the positioning rod 32.

[0025] In this embodiment, a concave-convex groove 37 is formed at the head end of the positioning rod 32, and a plurality of clamping blocks 38 are fixedly connected to the inner wall of the positioning groove 36, and the cross-sectional shape of the clamping blocks 38 is set to be triangular; Figure 4 As shown, a plurality of blocks 38 are evenly distributed on the side walls of the positioning groove 36, and a plurality of blocks 38 are spliced ​​to form a sawtooth plate. The two sides of the concave-convex groove 37 are engaged with the sawtooth plate blocks 38, which is beneficial to increase the positioning effect of the end of the positioning rod 32 in the positioning groove 36; at the same time, the length of the end of the positioning rod 32 is less than the length of the positioning groove 36, and the end of the positioning rod 32 can be fixed at the remaining positions of the positioning groove 36, which is convenient for the No. 1 shielding cover 2 to change different inclination angles.

[0026] In this embodiment, a box body 9 is provided on the side of the belt 6 to be tested, and a rotating rod 91 is rotatably connected inside the box body 9. The head end of the rotating rod 91 passes through the box body 9 and the end is rotatably connected to a circular cover 92. A turntable 93 is rotatably connected inside the circular cover 92. A plurality of knocking rods 94 are fixedly connected to the surface of the turntable 93. A clicker 95 is fixedly connected to the inner wall of the circular cover 92. The knocking rod 94 is engaged with the clicker 95. A driving wheel 96 is fixedly connected to the surface of the rotating rod 91. A rack 97 is provided on the side of the driving wheel 96. The rack 97 is slidably connected to the side wall of the box body 9. A No. 4 reset spring 16 is installed between the outer side of the rack 97 and the top of the box body 9, and a clip 17 is fixedly connected to the bottom end of the rack 97.

[0027] like Figure 9-10 As shown, a drive motor 12 and a drive box 11 are arranged near the first roller 21. The drive motor 12 and the drive box 11 will generate noisy background sound during operation. Part of the noise generated by the belt vibration is easily masked by the noisy background sound, which can easily confuse the detection and analysis of the sound detector. like Fig. 9 As shown, the box body 9 is installed on the inner surface of the frame 1, and the circular cover 92 is fixedly connected to the outer surface of the box body 9. The circular cover 92 covers the head end of the rotating rod 91, and the center of the circular cover 92 is at the same level as the axis of the rotating rod 91; The head end of the rotating rod 91 is fixedly connected with a rotating disk 93, the driving wheel 96 is located inside the box body 9 and sleeved on the surface of the rotating rod 91, the rack 97 can slide up and down on the side of the box body 9, and the outer contour of the driving wheel 96 is fixedly connected with a plurality of teeth, which are engaged with the tooth grooves inside the rack 97; The clip 17 is fixedly connected to the end of the rack 97. The clip 17 consists of a fixed arm and a movable arm. The end of the movable arm is rotatably connected to the corner of the fixed arm. The rotating part is equipped with a torsion spring. The movable arm is located at the top surface of the bottom of the fixed arm. There is a gap between the movable arm and the fixed arm. Initially, the rack 97 is in balance under the action of the No. 4 reset spring 16, and the lowest part of the belt 6 to be tested is suspended within the gap. The microphone in the sound detector is installed inside the circular cover 92 and close to the sound piece 95. The circular cover 92 is also made of sound insulation material. like Figure 9-10 As shown, when the tested belt 6 vibrates, the balance of the rack 97 is broken, and the tested belt 6 pushes the rack 97 upward through the movable arm, or pushes the rack 97 downward through the fixed arm, and the rack 97 is meshed with the driving wheel 96, so that the driving wheel 96 drives the rotating rod 91 to rotate in the box 9, and then the rotating rod 91 drives the rotating disk 93 to rotate in the circular cover 92. If the vibration amplitude of the tested belt 6 is too large, the rotating disk 93 drives the knocking rod 94 to contact the clicker 95, so that the clicker 95 makes a sound, and the sound will be transmitted through the microphone. The wind is directly transmitted to the control device, and the control device will determine that the noise generated by the tested belt 6 during its operation is at an unqualified level. If the vibration amplitude of the tested belt 6 is too small, the turntable 93 does not rotate, or the turntable 93 drives the knocking rod 94 not to contact the clicker 95, and the clicker 95 does not make any sound, the microphone will feed back to the control device, and the control device will determine that the noise generated by the tested belt 6 during its operation is at an qualified level, which is beneficial to reducing the interference of external sounds and is beneficial to improving the working efficiency and accuracy of detecting noise of the tested belt 6.

[0028] In this embodiment, a mounting plate 61 is detachably connected to the surface of the belt 6 to be tested, and a frame 62 is fixedly connected to the upper surface of the mounting plate 61; Figure 1-Figure 2 As shown and Fig.10As shown, the mounting plate 61 can be mounted on the top surface of the belt 6 to be tested by means of screws and nuts. During testing, the belt 6 to be tested rotates intermittently and repeatedly, and the mounting plate 61 moves back and forth between the top of the No. 1 shielding cover 2 and the No. 2 shielding cover 5. At the same time, the frame 62 and the upper surface of the mounting plate 61 form a container with an open top surface. Weights of different weights can be placed in the container to simulate the noise generated by the operation of the belt 6 to be tested under materials of different weights, thereby facilitating the effective control of the noise generated by the operation of the belt 6 to be tested.

[0029] In this embodiment, a telescopic rod 63 is rotatably connected between the first shielding cover 2 and the second shielding cover 5; Figure 2 As shown, the length of the telescopic rod 63 can be changed, and the end of the telescopic rod 63 is rotatably connected to the outer surface of the side cover 23, so as to strengthen the structural strength between the No. 1 shielding cover 2 and the No. 2 shielding cover 5, and also ensure the normal movement and rotation of the No. 1 shielding cover 2 and the No. 2 shielding cover 5. At the same time, the side covers 23 of the No. 1 shielding cover 2 and the No. 2 shielding cover 5 can also be opened synchronously, which further facilitates the replacement of the belt 6 to be tested.

[0030] It should be noted that the present invention is a noise detection device for belts. When used, Figure 1-Figure 12 As shown, the two ends of the belt 6 to be tested are respectively sleeved on the surface of the No. 1 roller 21 and the No. 2 roller 51, so that the belt 6 to be tested is wrapped in an elliptical shape, and the No. 1 telescopic cylinder 13 is started. Under the action of the balancing component 14, the No. 1 telescopic cylinder 13 steadily pushes the car body 4 to move, so that the distance between the car body 4 and the frame 1 gradually increases. In this process, the tension of the belt 6 to be tested is continuously increased until the end of the belt 6 to be tested is close to the No. 1 roller 21 or the No. 2 roller 51, the top and bottom of the belt 6 to be tested are in parallel and horizontal, and the surface of the belt 6 to be tested is taut, and then the brake part on the wheel at the bottom of the car body 4 is turned on. The vehicle body 4 is in the stationary position; then the driving motor 12 is started, and the driving motor 12 drives the No. 1 roller 21 to rotate through the driving box 11. With the cooperation of the No. 2 roller 51, the No. 1 roller 21 drives the tested belt 6 to run above the frame 1 and the vehicle body 4. At this time, the tested belt 6 runs in the horizontal direction, and then the noise in the No. 1 shielding cover 2 and the No. 2 shielding cover 5 is collected through the microphone, and then the control device and the sound level meter are used to judge and analyze whether the noise generated by the running of the tested belt 6 meets the acceptable range, thereby completing the detection of the tested belt 6 in the horizontal direction; The No. 1 shielding cover 2 is rotated forwardly on the inner side of the end of the frame 1 by the handle 22, and the No. 2 shielding cover 5 is rotated reversely on the inner side of the support frame 41 by the handle 22, and then the positions of the No. 1 shielding cover 2 and the No. 2 shielding cover 5 are fixed by the positioning device 3, and the No. 1 telescopic cylinder 13 and the No. 2 telescopic cylinder 43 are started at the same time, and the No. 1 telescopic cylinder 13 pushes the vehicle body 4 to move, and the No. 2 telescopic cylinder 43 pushes the support frame 41 to move along the cylinder 42, so that the opening of the No. 1 shielding cover 2 after rotation and the opening of the No. 2 shielding cover 5 after rotation are on opposite surfaces, and then the two ends of the belt 6 to be tested are respectively sleeved on the surfaces of the No. 1 roller 21 and the No. 2 roller 51, and as the positions of the vehicle body 4 and the support frame 41 are continuously adjusted, until the top and bottom of the belt 6 to be tested are in parallel with each other, and the surface of the belt 6 to be tested is tightened, the drive motor 12 is started according to the above steps, so as to complete the detection of the belt 6 to be tested in the inclined direction; By removing the connection between the support frame 41 and the No. 2 telescopic cylinder 43, the support frame 41 carrying the No. 2 shielding cover 5 and other structures are removed from the upper surface of the vehicle body 4, and then the sleeve 44 is sleeved on the top of the No. 3 telescopic cylinder 15 and fixed with screws and nuts. The openings of the No. 1 shielding cover 2 and the No. 2 shielding cover 5 are on opposite surfaces. Then, the two ends of the belt 6 to be tested are respectively sleeved on the surfaces of the No. 1 roller 21 and the No. 2 roller 51, and the No. 3 telescopic cylinder 15 is started. As the support frame 41 moves upward, until the top and bottom of the belt 6 to be tested are vertically parallel and the surface of the belt 6 to be tested is taut, the drive motor 12 is started according to the above steps to complete the detection of the belt 6 to be tested in the vertical direction; it is beneficial for the detection device to test and analyze the noise generated by the operation of the belt 6 to be tested from multiple directions, to improve the functionality of the detection device, and to improve the work efficiency and accuracy of the noise detection of the belt 6 to be tested.

[0031] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A noise detection device for a belt, comprising a frame (1), characterized in that: A first roller (21) is rotatably connected to the inner side of the end of the frame (1), a driving box (11) is fixedly connected to the outer side of the end of the frame (1), a driving motor (12) is fixedly connected to the outer side of the driving box (11), a first shielding cover (2) is arranged on the outer side of the first roller (21), the first shielding cover (2) is rotatably connected to the inner side of the end of the frame (1), a handle (22) and a positioning device (3) are arranged on the outer side of the first shielding cover (2), a vehicle body (4) is arranged at one end of the frame (1) away from the first shielding cover (2), a first telescopic cylinder (13) and a balancing assembly (14) are installed between the vehicle body (4) and the frame (1), a support frame (41) is detachably connected to the inner side of the vehicle body (4), a second shielding cover (5) is rotatably connected to the inner side of the support frame (41), and a second roller (51) is rotatably connected inside the second shielding cover (5). ), a belt to be tested (6) is sleeved between the first roller (21) and the second roller (51), a handle (22) and a positioning device (3) are also provided on the outside of the second shielding cover (5), a plurality of cylinders (42) are fixedly connected to the upper surface of the vehicle body (4), the support frame (41) is slidably connected to the surface of the cylinder (42), a second telescopic cylinder (43) is fixedly connected to the bottom of the vehicle body (4), the top of the second telescopic cylinder (43) passes through the vehicle body (4) and is detachably connected to the bottom of the support frame (41), a sleeve (44) is fixedly connected to the side of the support frame (41), a third telescopic cylinder (15) is fixedly connected to the top of the drive box (11), the sleeve (44) is engaged with the output end of the third telescopic cylinder (15), a sound detector is installed inside the first shielding cover (2), and the second shielding cover (5) is also provided with a sound detector; A box body (9) is arranged on the side of the belt (6) to be tested. A rotating rod (91) is rotatably connected inside the box body (9). The head end of the rotating rod (91) passes through the box body (9) and the end is rotatably connected to a circular cover (92). A rotating disk (93) is rotatably connected inside the circular cover (92). A plurality of knocking rods (94) are fixedly connected to the surface of the rotating disk (93). A sounding piece (95) is fixedly connected to the inner wall of the circular cover (92). The knocking rods (94) are engaged with the sounding piece (95). A driving wheel (96) is fixedly connected to the surface of the rotating rod (91). A rack (97) is arranged on the side of the driving wheel (96). The rack (97) is slidably connected to the side wall of the box body (9). A No. 4 reset spring (16) is installed between the outer side of the rack (97) and the top of the box body (9). A clip (17) is fixedly connected to the bottom end of the rack (97).

2. A belt noise detection device according to claim 1, characterized in that: The side of the first shielding cover (2) is rotatably connected to a side cover (23), the inner side of the end of the frame (1) is rotatably connected to a support plate (24), the first roller (21) is rotatably connected to the inner side of the support plate (24), a connection groove (25) is provided on a side of the support plate (24) close to the side cover (23), and a connection block (26) is fixedly connected to the inner side of the side cover (23).

3. A belt noise detection device according to claim 2, characterized in that: The surface of the first roller (21) is sleeved with a blocking ring (7), the blocking ring (7) is symmetrically arranged, a moving block (71) is installed on the side of the blocking ring (7), a moving groove (72) is opened on the surface of the support plate (24), a screw rod (73) is arranged on the side of the moving groove (72), and the moving block (71) passes through the moving groove (72) and is sleeved on the surface of the screw rod (73).

4. A belt noise detection device according to claim 3, characterized in that: The inner side of the blocking ring (7) is provided with a plurality of No. 1 grooves (74), an extension plate (75) is slidably connected in the No. 1 groove (74), a No. 1 return spring (76) is installed between the extension plate (75) and the No. 1 groove (74), the end of the moving block (71) is rotatably connected to the side end of the blocking ring (7), the side end of the blocking ring (7) is fixedly connected to a No. 1 long plate (77), the inner side of the No. 1 long plate (77) is provided with a No. 2 groove (78), the interior of the No. 2 groove (78) is slidably connected to a limit rod (8), and a limit assembly (81) is installed on the surface of the limit rod (8).

5. A belt noise detection device according to claim 4, characterized in that: The limiting assembly (81) comprises a fixed cylinder (82), wherein the fixed cylinder (82) is fixedly connected to the middle part of the limiting rod (8), a fixed rod (83) is slidably connected inside the fixed cylinder (82), a No. 2 return spring (84) is sleeved on the surface of the fixed rod (83), a control rod (85) is fixedly connected to the head end of the fixed rod (83), a No. 3 groove (86) is formed on the outer surface of the fixed cylinder (82), an end of the control rod (85) is engaged with the No. 3 groove (86), and a transition block (87) is fixedly connected to the middle part of the movable groove (72).

6. A belt noise detection device according to claim 1, characterized in that: The positioning device (3) comprises a movable groove (31), wherein the movable groove (31) is provided inside the No. 1 shielding cover (2), a positioning rod (32) is slidably connected inside the movable groove (31), the positioning rod (32) is symmetrically arranged, a guide rod (33) is arranged at the opposite surface of the positioning rod (32), a No. 3 return spring (34) is sleeved on the surface of the guide rod (33), a protrusion block (35) is fixedly connected to the end of the positioning rod (32), a positioning groove (36) is provided on the inner side of the end of the frame (1), and the head end of the positioning rod (32) is engaged with the positioning groove (36).

7. A belt noise detection device according to claim 6, characterized in that: The front end of the positioning rod (32) is provided with a concave-convex groove (37), and the inner wall of the positioning groove (36) is fixedly connected with a plurality of clamping blocks (38), and the cross-sectional shape of the clamping blocks (38) is set to be triangular.

8. A belt noise detection device according to claim 1, characterized in that: The surface of the belt to be tested (6) is detachably connected to a mounting plate (61), and the upper surface of the mounting plate (61) is fixedly connected to a frame (62).

9. A belt noise detection device according to claim 1, characterized in that: A telescopic rod (63) is rotatably connected between the first shielding cover (2) and the second shielding cover (5).

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