Sound absorbing board testing device and testing method

Abstract

The invention relates to the technical field of sound testing, and discloses a sound absorbing board testing device and a testing method. The device comprises: a mounting unit, wherein the mounting unit comprises a transverse telescopic mechanism and a longitudinal telescopic mechanism, and clamping blocks are installed at both ends of the longitudinal telescopic mechanism; a propulsion unit, wherein the propulsion unit is installed at the upper and lower ends of the mounting unit, and the propulsion unit comprises a propulsion mechanism, and the propulsion mechanism comprises a mounting frame, and a connecting plate is rotatably installed on the mounting frame, and a roller is rotatably connected to one end of the connecting plate, and a pressure mechanism is arranged on one side of the propulsion mechanism, and the pressure mechanism comprises a transverse pulling component, a transmission component and a longitudinal pulling component, and the transverse pulling component drives the longitudinal pulling component through the transmission component to press the propulsion mechanism to move; when testing the sound absorbing board, the roller in the propulsion mechanism is pressed against the sound absorbing board, so that each sound absorbing board is squeezed against each other, so as to reduce the gap between the sound absorbing boards and increase the accuracy of the sound absorbing board test.

Description

Technical Field

[0001] The invention belongs to the technical field of sound testing, and in particular relates to a sound absorbing board testing device and a testing method. Background Art

[0002] In the process of testing the sound absorption performance, in order to ensure the accuracy of the measurement, multiple sound absorbing panels are usually tested at the same time. During the test, the gaps between adjacent sound absorbing panels will cause the sound to be reflected at the angle of the gaps, reducing the measurement accuracy.

[0003] The Chinese patent with authorization announcement number CN211741164U discloses an adjustable rear cavity device for testing the sound absorption coefficient based on the reverberation chamber method. It can be operated by one person, saving the number of experimental personnel and being more convenient and quick. It can automatically rise and fall, and has no specific restrictions on the sample thickness and the rear cavity thickness. The required thickness can be automatically controlled according to the set requirements. The sample thickness and the rear cavity thickness can be continuously adjusted in real time, and the continuous measurement of the sound absorption coefficient can be achieved without changing the installation state of the specimen.

[0004] However, this technical solution still has at least the following defects: it is impossible to squeeze adjacent sound-absorbing panels to reduce the gap, which results in the test results being less accurate due to the gap. In addition, multiple linear stepper motors are used in this solution, which is costly and not conducive to popularization. In view of this, the present invention is proposed. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a sound absorbing panel testing device and a testing method. When testing the sound absorbing panel, the roller in the propulsion mechanism is pressed against the sound absorbing panel, so that the sound absorbing panels are squeezed against each other to reduce the gap between the sound absorbing panels and increase the accuracy of the sound absorbing panel testing. The sound absorbing panels are installed by providing multiple mounting units, and the mounting units can be folded and collapsed to meet the needs of testing multiple sound absorbing panels, while being easy to move and operate.

[0006] The technical solution adopted by the present invention to solve the technical problem is:

[0007] A sound absorbing panel testing device, comprising:

[0008] An installation unit, the installation unit comprising a transverse telescopic mechanism and a longitudinal telescopic mechanism, clamping blocks are installed at both ends of the longitudinal telescopic mechanism, and the transverse telescopic mechanism and the longitudinal telescopic mechanism are used to clamp the sound absorbing panel;

[0009] A propulsion unit is installed at the upper and lower ends of the mounting unit, the propulsion unit includes a propulsion mechanism, the propulsion mechanism includes a mounting frame, a connecting plate is rotatably installed on the mounting frame, one end of the connecting plate is rotatably connected to a roller, a pressure mechanism is arranged on one side of the propulsion mechanism, the pressure mechanism includes a transverse pulling assembly, a transmission assembly and a longitudinal pulling assembly, the transverse pulling assembly drives the longitudinal pulling assembly through the transmission assembly to press the propulsion mechanism to move.

[0010] As a preferred embodiment of the present invention, adjusting mechanisms are installed at both ends of the propulsion mechanism, a supporting mechanism is installed at one end of the adjusting mechanism, the supporting mechanism includes a positioning pile, the positioning pile is fixedly installed on the clamping block, the positioning pile is movably sleeved with a supporting block, the positioning pile is movably sleeved with a third spring, and the third spring is fixedly connected to the support block.

[0011] As a preferred embodiment of the present invention, the adjustment mechanism includes a transverse pulling adjustment component and a clamping and fixing component, the transverse pulling adjustment component includes a mounting plate, the mounting plate is fixedly connected to one end of the mounting frame, a slider is slidably connected to the mounting plate, the transverse pulling adjustment component adjusts the distance between the supporting mechanism and the propulsion mechanism by the sliding distance between the slider and the mounting plate, one end of the transverse pulling adjustment component is provided with an elastic reset component, the elastic reset component includes a second telescopic rod, both ends of the second telescopic rod are respectively fixedly mounted on one end of the slider and one end of the mounting frame, and a second spring is movably sleeved on the second telescopic rod.

[0012] As a preferred embodiment of the present invention, the clamping and fixing assembly includes a clamping rod and a locking block, the clamping rod is rotatably connected to the slider, the locking block is fixedly mounted on the mounting plate, the shapes of both sides of the locking block are adapted to the shape of the clamping rod, the clamping and fixing assembly clamps the locking block through the clamping rod to fix the distance between the supporting mechanism and the propulsion mechanism, and a sliding groove is provided on the clamping rod.

[0013] As a preferred embodiment of the present invention, the clamping and fixing assembly also includes an insertion rod, the insertion rod is fixedly installed on both sides of the support block, a movable plate is slidably installed on the end of the insertion rod, a connecting frame is fixedly installed on one end of the movable plate, a sliding rod is installed on one end of the connecting frame, the sliding rod is slidably connected in the sliding groove, guide blocks are fixedly installed on both sides of the clamping block, a second guide inclined surface is provided on the guide block, and a first guide inclined surface is provided on one side of the movable plate, and the first guide inclined surface is adapted to the second guide inclined surface.

[0014] As a preferred embodiment of the present invention, the propulsion mechanism also includes a stop-rotation assembly, which includes a tension spring and a pull plate, one end of the tension spring is fixedly connected to one end of the pull plate, the other end of the tension spring is fixedly connected to the mounting frame, one end of the pull plate is fixedly connected to the roller, a first telescopic rod is rotatably installed at both ends of the roller, the top of the first telescopic rod is rotatably installed on the mounting frame, and a first spring is movably sleeved on the first telescopic rod.

[0015] As a preferred embodiment of the present invention, the lateral telescopic mechanism includes a base plate, a slide plate is slidably mounted on the base plate, the clamping block is fixedly connected to the slide plate, the longitudinal telescopic mechanism includes a telescopic plate, both ends of the telescopic plate are fixedly connected to the slide plate, the mounting units are provided in multiple groups, and the mounting units located at both ends of the sound absorbing panel testing device are rotatably connected to one side of the mounting unit adjacent to them through the base plate, and the two adjacent mounting units located in the middle of the sound absorbing panel testing device are fixedly connected through the base plate.

[0016] As a preferred embodiment of the present invention, the horizontal pull assembly includes a fixed sleeve, which is fixedly mounted on one side of the clamping block of the two mounting units that are rotatably connected, and a rotating shaft is rotatably mounted on the fixed sleeve, and a third telescopic rod is rotatably connected between the fixed sleeves and the rotating shaft on both sides;

[0017] The transmission assembly includes a synchronous tube and a synchronous shaft, the synchronous tube and the synchronous shaft are movably connected, one end of the synchronous tube and the synchronous shaft are respectively rotatably mounted on one side of the guide block at the corresponding position, the synchronous tube and the synchronous shaft are fixedly mounted with a first bevel gear near one end of the fixed sleeve, one side of the first bevel gear is meshedly connected with a second bevel gear, and the second bevel gear is fixedly mounted on one end of the rotating shaft;

[0018] The longitudinal pulling assembly comprises a pulling rope, one end of which is provided with a pulling rod, one end of which is fixedly connected to a supporting block, and the synchronous tube and the end of the synchronous shaft are respectively wound and connected with the pulling rope at corresponding positions.

[0019] The present invention also discloses a sound absorbing board testing method, which comprises the following steps:

[0020] S1. When adjusting the telescopic plate according to the size of the sound absorbing plate, the sliding distance of the slider in the mounting plate is adjusted according to the adjustment distance. At the same time, the elastic force of the second springs at both ends of the mounting frame is balanced so that the mounting frame is always kept in the middle of two adjacent support blocks;

[0021] S2, the installation unit is rotated and unfolded, and the two adjacent fixing sleeves rotate relative to each other, so that the fixing sleeve drives the rotating shaft to rotate through the third telescopic rod, and the rotating shaft drives the second bevel gear to rotate while the second bevel gear drives the first bevel gear to rotate through meshing, and the first bevel gear drives the synchronous tube and the synchronous shaft to rotate, thereby winding the pull rope and driving the support block to move through the pull rod;

[0022] S3. During the movement of the support block, the insertion rod is driven to move, and the insertion rod drives the movable plate to move. The movable plate moves to one side under the action of the first guide slope and the second guide slope, and drives the clamping rod to clamp the locking block through the connecting frame and the sliding rod. At this time, the distance between the mounting frame and the support blocks at both ends remains fixed.

[0023] As a preferred embodiment of the present invention, the sound absorbing panel testing method further comprises the following steps:

[0024] S4, the movable plate moves while driving the clamping rod to move, the clamping rod drives the mounting plate to move, and then the mounting frame moves. During the movement of the mounting frame, the roller is driven to press against the edge of the sound absorbing plate. At this time, the elastic force of the first spring acts on the roller to increase the pressure between the roller and the sound absorbing plate;

[0025] S5. When the mounting frame moves toward the sound absorbing board, the connecting plate pushes the roller to move to one side. The roller rotates due to the friction between the roller and the sound absorbing board, and drives the pull plate to rotate during the rotation.

[0026] S6. The pulling plate pulls the tension spring, so that the tension of the tension spring acts on the roller through the pulling plate, so that the roller is continuously subjected to the reverse rotation force, and the sound absorbing panels are pushed to squeeze each other by relying on the reverse rotation force.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] When testing the sound absorbing panels, the roller in the propulsion mechanism is pressed against the sound absorbing panels, so that the sound absorbing panels are pressed against each other, thereby reducing the gaps between the sound absorbing panels and increasing the accuracy of the sound absorbing panel testing.

[0029] The present invention installs the sound absorbing panels by arranging a plurality of installation units, and the installation units can be folded and collapsed, thereby meeting the demand for testing a plurality of sound absorbing panels and being convenient to move and operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a front structural schematic diagram of a sound absorbing panel testing device of the present invention;

[0031] Figure 2 It is a schematic diagram of the back structure of a sound absorbing panel testing device of the present invention;

[0032] Figure 3It is a schematic structural diagram of a sound-absorbing panel testing device of the present invention in a folded state;

[0033] Figure 4 It is a structural schematic diagram of a test state of a sound absorbing panel test device of the present invention;

[0034] Figure 5 It is a structural schematic diagram of a slide plate of a sound absorbing board testing device of the present invention;

[0035] Figure 6 This is a structural schematic diagram of a mounting frame of a sound absorbing panel testing device of the present invention;

[0036] Figure 7 It is a structural schematic diagram of a roller of a sound-absorbing panel testing device of the present invention;

[0037] Figure 8 This is a schematic diagram of the structure of a movable plate and a guide block of a sound-absorbing plate testing device of the present invention;

[0038] Fig. 9 This is a schematic structural diagram of a clamping rod of a sound-absorbing panel testing device of the present invention;

[0039] Fig.10 This is a structural schematic diagram of the first bevel gear of a sound absorbing panel testing device of the present invention;

[0040] Fig.11 The present invention is a schematic diagram of the structure of a synchronous axis of a sound absorbing panel testing device.

[0041] Reference numerals:

[0042] 100, base plate; 101, slide plate; 102, clamping block; 103, telescopic plate;

[0043] 200, mounting frame; 201, connecting plate; 202, roller; 203, first telescopic rod; 204, first spring; 205, pulling plate; 206, pulling spring;

[0044] 300, mounting plate; 301, locking block; 302, second telescopic rod; 303, second spring; 304, slider; 305, clamping rod; 306, slide groove; 307, slide rod; 308, connecting frame; 309, movable plate; 310, plug rod; 311, first guide slope; 312, guide block; 313, second guide slope; 314, support block; 315, positioning pile; 316, third spring;

[0045] 400, synchronization tube; 401, synchronization shaft; 402, first bevel gear; 403, second bevel gear; 404, fixed sleeve; 405, rotating shaft; 406, third telescopic rod; 407, pull rope; 408, pull rod. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0047] Example 1

[0048] like Figures 1 to 11 As shown, a sound absorbing panel testing device comprises:

[0049] An installation unit, the installation unit includes a transverse telescopic mechanism and a longitudinal telescopic mechanism, and clamping blocks 102 are installed at both ends of the longitudinal telescopic mechanism. The transverse telescopic mechanism and the longitudinal telescopic mechanism are used to clamp the sound absorbing panel;

[0050] The propulsion unit is installed at the upper and lower ends of the mounting unit. The propulsion unit includes a propulsion mechanism. The propulsion mechanism includes a mounting frame 200. A connecting plate 201 is rotatably installed on the mounting frame 200. One end of the connecting plate 201 is rotatably connected to a roller 202. A pressure mechanism is arranged on one side of the propulsion mechanism. The pressure mechanism includes a transverse pulling assembly, a transmission assembly and a longitudinal pulling assembly. The transverse pulling assembly drives the longitudinal pulling assembly through the transmission assembly to press the propulsion mechanism to move.

[0051] like Figure 6 , Figure 7 , Fig. 9 As shown, in a specific embodiment, adjustment mechanisms are installed at both ends of the propulsion mechanism, and a support mechanism is installed at one end of the adjustment mechanism, and the support mechanism includes a positioning pile 315, the positioning pile 315 is fixedly installed on the clamping block 102, and a support block 314 is movably sleeved on the positioning pile 315, and a third spring 316 is movably sleeved on the positioning pile 315, and the third spring 316 is fixedly connected to the support block 314. In this setting, the third spring 316 is used to drive the support block 314 to reset.

[0052] like Figure 6 , Figure 7 , Fig. 9As shown, further, the adjustment mechanism includes a horizontal pull adjustment component and a clamping and fixing component, the horizontal pull adjustment component includes a mounting plate 300, the mounting plate 300 is fixedly connected to one end of the mounting frame 200, a slider 304 is slidably connected to the mounting plate 300, the horizontal pull adjustment component adjusts the distance between the support mechanism and the propulsion mechanism through the sliding distance between the slider 304 and the mounting plate 300, and an elastic reset component is provided at one end of the horizontal pull adjustment component, the elastic reset component includes a second telescopic rod 302, the two ends of the second telescopic rod 302 are respectively fixedly mounted at one end of the slider 304 and one end of the mounting frame 200, and a second spring 303 is movably sleeved on the second telescopic rod 302. In this setting, when the distance between the support mechanism and the propulsion mechanism changes, the elastic forces of the second springs 303 on both sides are balanced with each other, so that the deformation of the second spring 303 is similar, so that the propulsion mechanism is always in the middle between the support blocks 314 at both ends.

[0053] like Figure 6 , Figure 7 , Fig. 9 As shown, further, the clamping and fixing assembly includes a clamping rod 305 and a locking block 301, the clamping rod 305 is rotatably connected to the slider 304, the locking block 301 is fixedly mounted on the mounting plate 300, the shapes of the two sides of the locking block 301 are adapted to the shape of the clamping rod 305, the clamping and fixing assembly clamps the locking block 301 through the clamping rod 305 to fix the distance between the support mechanism and the propulsion mechanism, and a slide groove 306 is provided on the clamping rod 305. In this configuration, the contacting sides of the locking block 301 and the clamping rod 305 are both frosted to increase the friction between the two, and when the clamping rod 305 clamps the locking block 301, the friction keeps the clamping rod 305 and the locking block 301 relatively fixed, thereby preventing the propulsion mechanism from moving laterally.

[0054] like Figure 6-Figure 9 As shown, further, the clamping and fixing assembly also includes an insert rod 310, which is fixedly mounted on both sides of the support block 314, and a movable plate 309 is slidably mounted on the end of the insert rod 310, and a connecting frame 308 is fixedly mounted on one end of the movable plate 309, and a sliding rod 307 is mounted on one end of the connecting frame 308, and the sliding rod 307 is slidably connected in the slide groove 306, and guide blocks 312 are fixedly mounted on both sides of the clamping block 102, and a second guide slope 313 is provided on the guide block 312, and a first guide slope 311 is provided on one side of the movable plate 309, and the first guide slope 311 is adapted to the second guide slope 313. In this configuration, the insert rod 310 is driven to move during the movement of the support block 314, and the insert rod 310 drives the movable plate 309 to move, and the movable plate 309 moves to one side under the action of the first guide slope 311 and the second guide slope 313.

[0055] like Figure 6 , Figure 7As shown, further, the propulsion mechanism also includes a stop-rotation assembly, which includes a tension spring 206 and a pull plate 205, one end of the tension spring 206 is fixedly connected to one end of the pull plate 205, the other end of the tension spring 206 is fixedly connected to the mounting frame 200, one end of the pull plate 205 is fixedly connected to the roller 202, and the first telescopic rod 203 is rotatably installed at both ends of the roller 202, the top of the first telescopic rod 203 is rotatably installed on the mounting frame 200, and the first spring 204 is movably sleeved on the first telescopic rod 203. In this arrangement, during the movement of the mounting frame 200, the roller 202 is driven to press against the edge of the sound absorbing plate. At this time, the elastic force of the first spring 204 acts on the roller 202 to increase the pressure between the roller 202 and the sound absorbing plate. At the same time, during the movement of the mounting frame 200 toward the sound absorbing plate, the roller 202 is pushed to one side through the connecting plate 201. The roller 202 rotates due to the friction between the roller and the sound absorbing plate, and drives the pull plate 205 to rotate during the rotation. The pull plate 205 pulls the tension spring 206, so that the tension of the tension spring 206 acts on the roller 202 through the pull plate 205, so that the roller 202 is continuously subjected to the reverse rotation force, and relies on the reverse rotation force to push the sound absorbing plates to squeeze each other, so as to ensure that the gap between adjacent sound absorbing plates is minimized.

[0056] Example 2

[0057] like Figure 3 , Figure 5 As shown, in a specific embodiment, the transverse telescopic mechanism includes a base plate 100, a slide plate 101 is slidably mounted on the base plate 100, a clamping block 102 is fixedly connected to the slide plate 101, and the longitudinal telescopic mechanism includes a telescopic plate 103, both ends of the telescopic plate 103 are fixedly connected to the slide plate 101, and multiple groups of mounting units are provided, and the mounting units at both ends of the sound absorbing panel test device are rotatably connected to one side of the mounting unit adjacent thereto through the base plate 100, and two adjacent mounting units located in the middle of the sound absorbing panel test device are fixedly connected through the base plate 100. In this setting, multiple groups of mounting units are used to simultaneously install multiple sound absorbing panels for testing, thereby increasing the accuracy of the test.

[0058] like Fig.10 , Fig.11 As shown, further, the horizontal pull assembly includes a fixed sleeve 404, which is fixedly mounted on one side of the clamping block 102 of the two mounting units connected in rotation, and a rotating shaft 405 is rotatably mounted on the fixed sleeve 404, and a third telescopic rod 406 is staggered and rotatably connected between the fixed sleeves 404 and the rotating shaft 405 on both sides;

[0059] The transmission assembly includes a synchronous tube 400 and a synchronous shaft 401, which are movably connected to each other. One end of the synchronous tube 400 and the synchronous shaft 401 are rotatably mounted on one side of the guide block 312 at the corresponding position. A first bevel gear 402 is fixedly mounted on one end of the synchronous tube 400 and the synchronous shaft 401 close to the fixed sleeve 404. A second bevel gear 403 is meshedly connected to one side of the first bevel gear 402. The second bevel gear 403 is fixedly mounted on one end of the rotating shaft 405.

[0060] The longitudinal pull assembly includes a pull rope 407, one end of which is provided with a pull rod 408, one end of which is fixedly connected to the support block 314, and the ends of the synchronous tube 400 and the synchronous shaft 401 are respectively wound and connected with the pull rope 407 at the corresponding positions. In this configuration, the installation unit is rotated and unfolded, and at this time, the two adjacent fixed sleeves 404 rotate relative to each other, so that the fixed sleeve 404 drives the rotating shaft 405 to rotate through the third telescopic rod 406, and the rotating shaft 405 rotates while driving the second bevel gear 403 to rotate, and the second bevel gear 403 drives the first bevel gear 402 to rotate through meshing, and the first bevel gear 402 drives the synchronous tube 400 and the synchronous shaft 401 to rotate, and then the pull rope 407 is wound, and the support block 314 is driven to move through the pull rod 408.

[0061] The implementation principle of a sound absorbing panel testing device of this embodiment is as follows: Before the test, each installation unit is in a folded state (refer to Figure 3 ), at this time, the sound absorbing board to be tested can be installed at the clamping block 102, and the telescopic plate 103 and the slide plate 101 are adjusted according to the size of the sound absorbing board to ensure that the clamping block 102 can clamp the sound absorbing board;

[0062] When the telescopic plate 103 is adjusted according to the size of the sound absorbing plate, the sliding distance of the slider 304 in the mounting plate 300 is adapted to change according to the adjustment distance, and at the same time, the elastic force balance of the second springs 303 at both ends of the mounting frame 200 makes the mounting frame 200 always remain in the middle of two adjacent support blocks 314;

[0063] The installation unit is rotated and unfolded. At this time, the two adjacent fixing sleeves 404 rotate relative to each other, so that the fixing sleeve 404 drives the rotating shaft 405 to rotate through the third telescopic rod 406. The rotating shaft 405 drives the second bevel gear 403 to rotate while the second bevel gear 403 drives the first bevel gear 402 to rotate through meshing. The first bevel gear 402 drives the synchronous tube 400 and the synchronous shaft 401 to rotate, and then the pull rope 407 is wound, and the support block 314 is driven to move through the pull rod 408.

[0064] The support block 314 moves while driving the insertion rod 310 to move, and the insertion rod 310 drives the movable plate 309 to move. The movable plate 309 moves to one side under the action of the first guide slope 311 and the second guide slope 313, and drives the clamping rod 305 to clamp the locking block 301 through the connecting frame 308 and the sliding rod 307. At this time, the distance between the mounting frame 200 and the support blocks 314 at both ends remains fixed;

[0065] When the movable plate 309 moves, it drives the clamping rod 305 to move, and the clamping rod 305 drives the mounting plate 300 to move, thereby moving the mounting frame 200. During the movement of the mounting frame 200, the roller 202 is driven to press against the edge of the sound absorbing plate. At this time, the elastic force of the first spring 204 acts on the roller 202 to increase the pressure between the roller 202 and the sound absorbing plate. At the same time, during the movement of the mounting frame 200 toward the sound absorbing plate, the roller 202 is pushed to one side through the connecting plate 201. The roller 202 rotates due to the friction between the sound absorbing plate and drives the pulling plate 205 to rotate during the rotation. The pulling plate 205 pulls the tension spring 206, so that the tension of the tension spring 206 acts on the roller 202 through the pulling plate 205, thereby causing the roller 202 to be continuously subjected to the reverse rotation force, and relying on the reverse rotation force, the sound absorbing plates are pushed to squeeze each other to ensure that the gap between adjacent sound absorbing plates is minimized.

[0066] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A sound absorbing panel testing device, characterized in that: include: An installation unit, the installation unit comprising a transverse telescopic mechanism and a longitudinal telescopic mechanism, clamping blocks (102) being installed at both ends of the longitudinal telescopic mechanism, the transverse telescopic mechanism and the longitudinal telescopic mechanism being used to clamp the sound absorbing panel; A propulsion unit, the propulsion unit being mounted at the upper and lower ends of the mounting unit, the propulsion unit comprising a propulsion mechanism, the propulsion mechanism comprising a mounting frame (200), a connecting plate (201) being rotatably mounted on the mounting frame (200), one end of the connecting plate (201) being rotatably connected to a roller (202), a pressure mechanism being arranged on one side of the propulsion mechanism, the pressure mechanism comprising a transverse pulling assembly, a transmission assembly and a longitudinal pulling assembly, the transverse pulling assembly driving the longitudinal pulling assembly via the transmission assembly to press the propulsion mechanism to move; The horizontal pulling assembly comprises a fixed sleeve (404), the fixed sleeve (404) being fixedly mounted on one side of a clamping block (102) on two rotatably connected mounting units, a rotating shaft (405) being rotatably mounted on the fixed sleeve (404), and a third telescopic rod (406) being rotatably connected between the fixed sleeves (404) and the rotating shaft (405) on both sides. The transmission assembly comprises a synchronous tube (400) and a synchronous shaft (401), wherein the synchronous tube (400) and the synchronous shaft (401) are movably connected, and a first bevel gear (402) is fixedly installed on one end of the synchronous tube (400) and the synchronous shaft (401) close to the fixed sleeve (404), and a second bevel gear (403) is meshedly connected on one side of the first bevel gear (402), and the second bevel gear (403) is fixedly installed on one end of the rotating shaft (405); The longitudinal pulling assembly comprises a pulling rope (407), one end of which is provided with a pulling rod (408), one end of which is fixedly connected to a supporting block (314), and the ends of the synchronous tube (400) and the synchronous shaft (401) are respectively wound and connected to the pulling rope (407) at corresponding positions.

2. A sound absorbing panel testing device according to claim 1, characterized in that: Adjustment mechanisms are installed at both ends of the propulsion mechanism, and a support mechanism is installed at one end of the adjustment mechanism. The support mechanism comprises a positioning pile (315), the positioning pile (315) is fixedly installed on the clamping block (102), a support block (314) is movably sleeved on the positioning pile (315), a third spring (316) is movably sleeved on the positioning pile (315), and the third spring (316) is fixedly connected to the support block (314).

3. A sound absorbing panel testing device according to claim 2, characterized in that: The adjustment mechanism comprises a transverse pulling adjustment component and a clamping fixing component, the transverse pulling adjustment component comprises a mounting plate (300), the mounting plate (300) is fixedly connected to one end of the mounting frame (200), a slider (304) is slidably connected to the mounting plate (300), the transverse pulling adjustment component adjusts the distance between the support mechanism and the propulsion mechanism by the sliding distance between the slider (304) and the mounting plate (300), one end of the transverse pulling adjustment component is provided with an elastic reset component, the elastic reset component comprises a second telescopic rod (302), two ends of the second telescopic rod (302) are respectively fixedly mounted on one end of the slider (304) and one end of the mounting frame (200), and a second spring (303) is movably sleeved on the second telescopic rod (302).

4. A sound absorbing panel testing device according to claim 3, characterized in that: The clamping and fixing assembly comprises a clamping rod (305) and a locking block (301); the clamping rod (305) is rotatably connected to the slider (304); the locking block (301) is fixedly mounted on the mounting plate (300); the shapes of two sides of the locking block (301) are adapted to the shape of the clamping rod (305); the clamping and fixing assembly clamps the locking block (301) through the clamping rod (305) to fix the distance between the supporting mechanism and the propulsion mechanism; and a sliding groove (306) is provided on the clamping rod (305).

5. A sound absorbing panel testing device according to claim 4, characterized in that: The clamping and fixing assembly also includes an insertion rod (310), the insertion rod (310) is fixedly mounted on both sides of the support block (314), a movable plate (309) is slidably mounted on the end of the insertion rod (310), a connecting frame (308) is fixedly mounted on one end of the movable plate (309), a sliding rod (307) is mounted on one end of the connecting frame (308), and the sliding rod (307) is slidably connected in the sliding groove (306), guide blocks (312) are fixedly mounted on both sides of the clamping block (102), one end of the synchronization tube (400) and the synchronization shaft (401) are respectively rotatably mounted on one side of the guide block (312) at corresponding positions, a second guide inclined surface (313) is provided on the guide block (312), and a first guide inclined surface (311) is provided on one side of the movable plate (309), and the first guide inclined surface (311) is adapted to the second guide inclined surface (313).

6. A sound absorbing panel testing device according to claim 5, characterized in that: The propulsion mechanism further comprises a rotation-stopping assembly, which comprises a tension spring (206) and a pull plate (205), wherein one end of the tension spring (206) is fixedly connected to one end of the pull plate (205), the other end of the tension spring (206) is fixedly connected to the mounting frame (200), one end of the pull plate (205) is fixedly connected to the roller (202), a first telescopic rod (203) is rotatably mounted at both ends of the roller (202), the top of the first telescopic rod (203) is rotatably mounted on the mounting frame (200), and a first spring (204) is movably sleeved on the first telescopic rod (203).

7. A sound absorbing panel testing device according to claim 6, characterized in that: The transverse telescopic mechanism comprises a base plate (100), a slide plate (101) is slidably mounted on the base plate (100), the clamping block (102) is fixedly connected to the slide plate (101), the longitudinal telescopic mechanism comprises a telescopic plate (103), both ends of the telescopic plate (103) are fixedly connected to the slide plate (101), a plurality of mounting units are provided, and the mounting units located at both ends of the sound absorbing panel testing device are rotatably connected to a side of a mounting unit adjacent thereto through the base plate (100), and two adjacent mounting units located in the middle of the sound absorbing panel testing device are fixedly connected through the base plate (100).

8. A method for testing a sound absorbing panel, implemented based on the sound absorbing panel testing device according to claim 7, characterized in that: The sound absorbing panel testing method comprises the following steps: S1. When adjusting the telescopic plate (103) according to the size of the sound absorbing plate, the sliding distance of the slider (304) in the mounting plate (300) is changed according to the adjusted distance, and at the same time, the elastic force of the second springs (303) at both ends of the mounting frame (200) is balanced so that the mounting frame (200) is always kept in the middle of two adjacent support blocks (314); S2, the installation unit is rotated and unfolded, and the two adjacent fixing sleeves (404) rotate relative to each other, so that the fixing sleeve (404) drives the rotating shaft (405) to rotate through the third telescopic rod (406), and the rotating shaft (405) drives the second bevel gear (403) to rotate at the same time, and the second bevel gear (403) drives the first bevel gear (402) to rotate through meshing, and the first bevel gear (402) drives the synchronous tube (400) and the synchronous shaft (401) to rotate, and then the pull rope (407) is wound, and the support block (314) is driven to move through the pull rod (408); S3. During the movement of the support block (314), the insertion rod (310) is driven to move, and the insertion rod (310) drives the movable plate (309) to move. The movable plate (309) moves to one side under the action of the first guide inclined surface (311) and the second guide inclined surface (313) and drives the clamping rod (305) to clamp the locking block (301) through the connecting frame (308) and the sliding rod (307). At this time, the distance between the mounting frame (200) and the support blocks (314) at both ends remains fixed.

9. A sound absorbing panel testing method according to claim 8, characterized in that: The sound absorbing panel testing method further comprises the following steps: S4, the movable plate (309) moves while driving the clamping rod (305) to move, the clamping rod (305) drives the mounting plate (300) to move, and the mounting frame (200) moves. During the movement of the mounting frame (200), the roller (202) is driven to press against the edge of the sound absorbing plate. At this time, the elastic force of the first spring (204) acts on the roller (202) to increase the pressure between the roller (202) and the sound absorbing plate; S5, when the mounting frame (200) moves toward the sound absorbing plate, the connecting plate (201) pushes the roller (202) to move to one side, and the roller (202) rotates due to the friction between the roller and the sound absorbing plate, and drives the pulling plate (205) to rotate during the rotation process; S6, the pulling plate (205) pulls the tension spring (206), so that the tension of the tension spring (206) acts on the roller (202) through the pulling plate (205), thereby causing the roller (202) to continuously be subjected to a reverse rotation force, and relying on the reverse rotation force, the sound absorbing plates are pushed to be squeezed against each other.

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