A temperature-humidity-vibration coupling test device

Abstract

The present invention provides a temperature-humidity-vibration coupling test device, which consists of two horizontal vibration mechanisms, one vertical vibration mechanism, a vibration platform, a synchronous drive mechanism, and a test box installed on the vibration platform. By connecting the test box to a temperature control component and a humidity control component, the temperature and humidity in the test box can be monitored and regulated in real time, truly simulating the temperature and humidity environment when the tested product is in use; the two first excitation shafts and several second excitation shafts are driven to rotate synchronously by the synchronous drive mechanism, and when the excitation shafts rotate, eccentric excitation is generated under the action of the eccentric mechanism, thereby driving the horizontal excitation block and the vertical excitation block to perform linear operation along the horizontal sliding mechanism and the vertical sliding mechanism respectively, and driving the vibration platform to perform three-dimensional vibration along the multi-axial sliding pair through the horizontal support rod and the vertical support rod, thereby driving the test box installed on the vibration platform to perform multi-axial coordinated vibration, thereby realizing stable three-dimensional vibration testing.

Description

Technical Field

[0001] The invention belongs to the technical field of test devices, and in particular relates to a temperature-humidity-vibration coupling test device. Background Art

[0002] With the rapid development of society and the economy, temperature, humidity, and vibration test chambers have become indispensable tools for product performance testing in scientific research and production units in aerospace, aviation, petroleum, chemical, electronics, and communications. They can realistically simulate the product's operating environment and provide a temperature and humidity environment to assess product adaptability or evaluate product behavior. Compared with the effects of a single factor, temperature, humidity, and vibration test chambers can more realistically reflect a product's adaptability to combined changes in temperature, humidity, and vibration during transportation and actual use, exposing product defects. They are essential testing methods for the entire process of new product development, prototype testing, and product qualification testing. Existing test chambers often only perform vibration tests in one direction at a time, or it is difficult to ensure simultaneous vibration in multiple directions, resulting in poor vibration testing results.

[0003] Chinese patent CN208091664U discloses a composite vibration test device with adjustable amplitude and frequency, comprising a vibration motor, a slide rail and a slider, a damping spring, a hollow cylindrical support column, a base, a welded steel plate, and support and limit steel plates on each layer. The test device uses three mutually perpendicular vibration motors as excitation sources, and the amplitude is adjusted by adjusting the position of the eccentric block built into the vibration motor. The test device uses a frequency converter as a vibration frequency control element to design and adjust the test parameters. The test device uses mutually perpendicular guide rails in the horizontal direction as the vibration guide mechanism, and the vertical vibration is buffered by a vertical damping spring to achieve single-degree-of-freedom displacement. However, in this application, the three vibration motors are controlled separately, making it difficult to ensure the uniformity of the vibration in the three mutually perpendicular directions. The vibration in the three mutually perpendicular directions is prone to asynchronous vibration, resulting in poor vibration effect. In addition, the vibration in the vertical direction is achieved by the damping spring. Due to the short life of the adjustment spring, long-term use will cause the spring to age and deteriorate in spring elasticity, thereby affecting the vibration effect of the vibration test device and the reliability of the test results.

[0004] In view of the shortcomings of the existing technology, it is necessary to provide a composite vibration test device that can ensure the synchronization of vibrations in three mutually perpendicular directions to improve the reliability of the vibration test results, and has a stable structure, long service life and easy operation. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides a temperature-humidity-vibration coupling test device, which can not only perform temperature, humidity and composite vibration tests simultaneously, but also perform multi-axial vibration tests on products and ensure that multi-axial vibrations are carried out synchronously to improve the reliability of vibration test results, and can realize vibration tests in any single direction, any two directions and three mutually perpendicular directions.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A temperature-humidity-vibration coupling test device, comprising:

[0008] Two horizontal vibration mechanisms, namely an X-axis horizontal vibration mechanism and a Y-axis horizontal vibration mechanism with different installation orientations but the same structure, each of the horizontal vibration mechanisms includes a horizontal excitation base, a horizontal excitation block mounted on the horizontal excitation base via a horizontal sliding mechanism, a first excitation shaft mounted on the horizontal excitation block via a rotating pair, and a horizontal eccentric device mounted on the first excitation shaft. The first excitation shafts of the two horizontal vibration mechanisms are arranged perpendicular to each other, and the eccentric mechanisms enable the two first excitation shafts to drive the two horizontal excitation blocks to vibrate horizontally in the X-axis and Y-axis directions respectively during the process of rotation;

[0009] The vertical vibration mechanism includes a plurality of vertical excitation bases, a vertical excitation block mounted on each vertical excitation base via a vertical sliding mechanism, a second excitation shaft mounted on each vertical excitation block via a rotating pair, and a vertical eccentric device mounted on the second excitation shaft. The eccentric mechanism causes the second excitation shaft to drive the vertical excitation block to vibrate in the vertical direction during rotation.

[0010] A vibration platform comprises a vibration test bench and a vibration support platform, wherein the vibration test bench is mounted on the vibration support platform via a horizontal two-dimensional translation mechanism, and the vibration support platform is mounted on a plurality of vertical excitation blocks via vertical support rods. The vibration test bench is connected to the horizontal excitation blocks of the two horizontal vibration mechanisms via horizontal support rods, wherein the horizontal support rod of the X-axis horizontal vibration mechanism is connected to the vibration test bench via a first vertical two-dimensional translation mechanism, and the horizontal support rod of the Y-axis horizontal vibration mechanism is connected to the vibration test bench via a second vertical two-dimensional translation mechanism;

[0011] A synchronous driving mechanism, used to drive the two first excitation shafts and the plurality of second excitation shafts to rotate synchronously, and to generate excitation due to eccentricity during the rotation process, thereby driving the vibration platform to vibrate in three dimensions; and

[0012] The test box is installed on the vibration platform and is used to place the tested product. The test box is connected to a temperature control component for controlling the temperature inside the box and a humidity control component for controlling the humidity inside the box.

[0013] Furthermore, the temperature control component is a heat source installed on the inner wall of the test box.

[0014] Furthermore, the test device also includes a mounting table, the humidity control assembly includes an atomizer mounted on the mounting table and an atomizer tube with two ends respectively connected to the atomizer and the test box, and a water bottle is installed on the atomizer.

[0015] Furthermore, the synchronous drive mechanism includes a driving gear set, two horizontal driven mechanisms and a vertical driven mechanism, and the driving gear set drives the horizontal driven mechanism and the vertical driven mechanism to move synchronously through three sets of first synchronous belts;

[0016] The driving gear set includes a driving base, a first gear rack installed on the driving base, and a first horizontal driving bevel gear and a first vertical driving bevel gear installed on the first gear rack. An X-axial driving shaft and a Y-axial driving shaft are installed on the driving base, and a Z-axial driving shaft is installed on the gear rack. The X-axial driving shaft is fixedly connected to the first vertical driving bevel gear, and the Y-axial driving shaft is connected to the first gear rack through a rotating pair. The Z-axial driving shaft is fixedly connected to the first horizontal driving bevel gear and one end is connected to the first driving device. A second vertical driving bevel gear that is meshed with each other is fixedly installed on the X-axial driving shaft and the Y-axial driving shaft.

[0017] Furthermore, the two horizontal driven mechanisms each include a horizontal driven shaft, a second gear rack, and a meshing first horizontal driven bevel gear and a first vertical driven bevel gear installed on the second gear rack. Two sections of first buffer springs are installed on the horizontal driven shaft. The first vertical driven bevel gear can be axially slidably installed on the horizontal driven shaft and is located between the two sections of first buffer springs. The two horizontal driven shafts are respectively connected to the X-axial drive shaft and the Y-axial drive shaft through the first synchronous belt, and the two first excitation shafts are respectively fixedly connected to the corresponding first horizontal driven bevel gears.

[0018] Furthermore, the vertical driven mechanism includes a third gear rack and several groups of synchronous vertical driven gear sets mounted on the third gear rack, each of the vertical driven gear sets includes a first vertical driven shaft and a second horizontal driven bevel gear and two second vertical driven bevel gears meshing with each other, each first vertical driven shaft is mounted with two sections of second buffer springs, the second horizontal driven bevel gear is axially slidably mounted on the first vertical driven shaft and is located between the two sections of second buffer springs, and each second vertical driven bevel gear is fixedly connected to each second exciting shaft respectively;

[0019] The vertical driven mechanism also includes a vertical driven base and a second vertical driven shaft, one end of the second vertical driven shaft is connected to the Z-axis drive shaft through a first synchronous belt, and the other end is installed on the vertical driven base through a rotating pair, and all the first vertical driven shafts are connected to the second vertical driven shaft through a second synchronous belt.

[0020] Furthermore, the horizontal eccentric device is a first horizontal eccentric block and a second horizontal eccentric block installed on the first excitation shaft and capable of adjusting the relative angle, and the vertical eccentric device is a first vertical eccentric block and a second vertical eccentric block installed on the second excitation shaft and capable of adjusting the relative angle.

[0021] Furthermore, the horizontal driven mechanism further comprises an auxiliary base, the auxiliary base is provided with a horizontal sliding block parallel to the corresponding horizontal driven shaft, and the second gear rack is provided with a horizontal slide rail matched with the horizontal sliding block.

[0022] Furthermore, the horizontal two-dimensional translation mechanism includes a first guide rail mounting platform, the first guide rail mounting platform is connected to the vibration test platform through a first X-axial sliding pair, and the first guide rail mounting platform is connected to the vibration support platform through a first Y-axial sliding pair.

[0023] Furthermore, the first vertical plane two-dimensional translation mechanism includes a second guide rail mounting platform, the second guide rail mounting platform is connected to the horizontal support rod of the X-axis horizontal vibration mechanism through a second Y-axis axial sliding pair, and the second guide rail mounting platform is connected to the vibration test platform through a first Z-axis axial sliding pair; the second vertical plane two-dimensional translation mechanism includes a third guide rail mounting platform, the third guide rail mounting platform is connected to the horizontal support rod of the Y-axis horizontal vibration mechanism through a second X-axis axial sliding pair, and the third guide rail mounting platform is connected to the vibration test platform through a second Z-axis axial sliding pair.

[0024] The beneficial effects of the present invention are:

[0025] 1. The present invention can monitor and control the temperature and humidity in the test chamber in real time by connecting the test chamber to the temperature control component and the humidity control component, thereby realizing a true simulation of the temperature and humidity environment when the tested product is in use; the synchronous driving mechanism is used to drive the two first excitation shafts and the plurality of second excitation shafts to rotate synchronously, and the center of gravity of the excitation shafts will shift under the action of the eccentric mechanism during the rotation process, thereby generating eccentric excitation. Since the excitation shafts are installed on the excitation blocks, and the horizontal excitation blocks and the vertical excitation blocks are installed on the horizontal excitation base and the vertical base respectively through the horizontal sliding mechanism and the vertical sliding mechanism On the excitation seat, under the eccentric excitation action of the first excitation axis and several second excitation axes, the horizontal excitation block and the vertical excitation block respectively perform linear operation along the horizontal sliding mechanism and the vertical sliding mechanism. Since the vibration platform is installed on all the excitation blocks through the horizontal support rod and the vertical support rod, the excitation block will drive the horizontal plane two-dimensional translation mechanism, the first vertical plane two-dimensional translation mechanism and the second vertical plane two-dimensional translation mechanism to perform three-dimensional vibration, thereby driving the test box installed on the vibration platform to perform multi-axial coordinated vibration, thereby achieving a true simulation of the vibration environment when the tested product is used. The present invention can simultaneously drive the rotation of the excitation axes in multiple directions through the synchronous driving mechanism, which can maintain the uniformity of the eccentric excitation and thus improve the vibration effect.

[0026] 2. The eccentric mechanism of the present invention is a plurality of eccentric blocks installed on the exciting shaft and capable of adjusting the relative angle. By adjusting the relative angle between the plurality of eccentric blocks, not only the degree of deviation of the center of gravity of the exciting shaft can be adjusted, thereby realizing stepless adjustment of the amplitude, so that the present invention can meet different vibration test requirements, but also vibration in any single direction, any two directions and three mutually perpendicular directions can be realized, so that the present invention can meet different vibration test requirements.

[0027] 3. The present invention provides multiple sets of vertical driven gear sets and multiple sets of vertical support rods in the vertical driven mechanism, which not only improves the vibration effect in the Z-axis direction, but also provides stable support for the vibration platform and the test box, thereby ensuring the structural stability of the test device.

[0028] 4. The present invention provides a buffer spring, which not only provides axial support for the driven gear set and all the excitation movable blocks, thereby improving the overall stability of the test device, but also ensures that the driven gear set and all the excitation movable blocks perform smooth reciprocating motion, thereby improving the effect of the vibration test. The present invention provides multiple sets of sliding pairs in different directions. When the excitation movable blocks drive the vibration platform to reciprocate through support rods in various directions, it not only provides support for the driven gear set and the vibration platform, further improving stability, but also provides freedom of reciprocating motion in different directions, thereby preventing the driven gear set from being worn due to excessive load, thereby improving the service life of the driven gear set. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall structure of a temperature-humidity-vibration coupling test device of the present invention;

[0030] Figure 2 A top view of a temperature-humidity-vibration coupling test device according to the present invention;

[0031] Figure 3 This is a schematic diagram of the internal structure of the test box of the present invention;

[0032] Figure 4 Schematic diagram of the installation of the synchronous drive mechanism, vibration mechanism and vibration platform of the present invention Figure 1 ;

[0033] Figure 5 Schematic diagram of the installation of the synchronous drive mechanism, vibration mechanism and vibration platform of the present invention Figure 2 ;

[0034] Figure 6 This is a schematic diagram of the overall structure of the drive gear set of the present invention;

[0035] Figure 7 This is a schematic structural diagram of the driving base of the present invention;

[0036] Figure 8 Schematic diagram of the installation of the horizontal vibration mechanism and the horizontal driven mechanism of the present invention;

[0037] Figure 9 Schematic diagram of the structure of the horizontal follower mechanism of the present invention;

[0038] Figure 10 Schematic diagram of the structure of the horizontal vibration mechanism of the present invention;

[0039] Figure 11 Schematic diagram of the installation of the vertical vibration mechanism and the vertical driven mechanism of the present invention;

[0040] Figure 12 Schematic diagram of the overall structure of the vertical follower mechanism of the present invention;

[0041] Figure 13 Schematic diagram of the bottom structure of the vertical follower mechanism of the present invention;

[0042] Figure 14 It is a structural schematic diagram of the vertical vibration mechanism of the present invention;

[0043] Figure 15 The structure of the vibration platform of the present invention is schematically shown. Figure 1 ;

[0044] Figure 16 The structure of the vibration platform of the present invention is shown in FIG. Figure 2 ;

[0045] Figure 17 It is a structural schematic diagram of the synchronous belt holding device of the present invention;

[0046] Figure 18 It is a structural schematic diagram of the synchronous belt pre-tightening device of the present invention.

[0047] Reference numerals:

[0048] 100 - horizontal vibration mechanism, 110 - horizontal excitation seat, 111 - horizontal sliding shaft, 112 - third buffer spring, 120 - horizontal excitation block, 121 - fifth bearing, 122 - horizontal support rod, 130 - first excitation shaft, 140 - horizontal eccentric device, 141 - first horizontal eccentric block, 142 - second horizontal eccentric block;

[0049] 200 - vertical vibration mechanism, 210 - vertical excitation seat, 211 - vertical sliding shaft, 212 - fourth buffer spring, 220 - vertical excitation block, 221 - eighth bearing, 222 - vertical support rod, 230 - second excitation shaft, 240 - vertical eccentric device, 241 - first vertical eccentric block, 242 - second vertical eccentric block;

[0050] 300-vibration platform, 310-vibration test table, 320-vibration support table, 330-first guide rail mounting platform, 331-first X-axial sliding pair, 332-first Y-axial sliding pair, 340-second guide rail mounting platform, 341-second Y-axial sliding pair, 342-first Z-axial sliding pair, 350-third guide rail mounting platform, 351-second X-axial sliding pair, 352-second Z-axial sliding pair;

[0051] 400-synchronous drive mechanism, 410-drive gear set, 411-drive base, 4111-vertical mounting plate, 4112-first bearing, 412-first gear rack, 4121-horizontal support plate, 4122-vertical support plate, 4123-second bearing, 413-first horizontal drive bevel gear, 414-first vertical drive bevel gear, 415-drive shaft set, 4151-X-axial drive shaft, 4152-Y-axial drive shaft, 4153-Z-axial drive shaft, 416-first drive device, 417-coupling, 418-second vertical drive bevel gear;

[0052] 420 - horizontal driven mechanism, 421 - horizontal driven shaft, 4211 - first buffer spring, 422 - second gear rack, 4221 - horizontal plate, 4222 - vertical plate, 4223 - fourth bearing, 4224 - horizontal slide rail, 423 - first horizontal driven bevel gear, 424 - first vertical driven bevel gear, 425 - horizontal driven base, 4251 - third bearing, 426 - auxiliary base, 4261 - horizontal slider;

[0053] 430 - vertical driven mechanism, 431 - third gear rack, 4311 - bottom plate, 4312 - side plate, 4313 - vertical slide rail, 4314 - sixth bearing, 432 - first vertical driven shaft, 4321 - second buffer spring, 433 - second horizontal driven bevel gear, 434 - second vertical driven bevel gear, 435 - vertical driven base, 4351 - upper support plate, 4352 - lower support plate, 4353 - seventh bearing, 4354 - vertical shaft, 4355 - vertical slide rail, 436 - second vertical driven shaft, 437 - second synchronous belt, 438 - third synchronous pulley;

[0054] 440-first synchronous belt, 450-first synchronous pulley, 460-second synchronous pulley;

[0055] 500-test chamber, 510-test chamber body, 520-test chamber door, 530-heat source, 540-humidity control assembly, 541-atomizer, 542-water bottle, 543-bellows, 544-PVC pipe, 550-mounting platform, 551-ground wheels, 552-ground feet, 560-display panel;

[0056] 600-synchronous belt retaining device, 610-toggle clamp base, 620-clamping track, 630-toggle clamp, 631-rotating handle, 640-clamping slide, 650-clamping push block, 660-clamping roller;

[0057] 700-synchronous belt preload device, 710-preload base, 720-second power unit, 730-preload push block, 731-fixed shaft, 732-ninth bearing, 740-preload roller. DETAILED DESCRIPTION

[0058] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0059] In the description of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0060] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0061] like Figure 1 and Figure 2 As shown, the present invention provides a temperature-humidity-vibration coupling test device, comprising:

[0062] Two horizontal vibration mechanisms 100 are respectively an X-axis horizontal vibration mechanism and a Y-axis horizontal vibration mechanism, which are installed in different orientations but have the same structure. The horizontal vibration mechanism 100 includes a horizontal excitation base 110, a horizontal excitation block 120 mounted on the horizontal excitation base 110 via a horizontal sliding mechanism, a first excitation shaft 130 mounted on the horizontal excitation block 120 via a rotating pair, and a horizontal eccentric device 140 mounted on the first excitation shaft 130. The first excitation shafts 130 of the two horizontal vibration mechanisms 100 are arranged perpendicular to each other. The eccentric mechanism causes the two first excitation shafts 130 to drive the two horizontal excitation blocks 120 to vibrate horizontally in the X-axis and Y-axis directions, respectively, during the process of rotation;

[0063] The vertical vibration mechanism 200 includes a plurality of vertical excitation bases 210, a vertical excitation block 220 mounted on each vertical excitation base 210 via a vertical sliding mechanism, a second excitation shaft 230 mounted on each vertical excitation block 220 via a revolving pair, and a vertical eccentric device 240 mounted on the second excitation shaft 230. The eccentric device enables the second excitation shaft 230 to drive the vertical excitation block 220 to vibrate vertically during rotation.

[0064] The vibration platform 300 includes a vibration test table 310 and a vibration support table 320. The vibration test table 310 is mounted on the vibration support table 320 via a horizontal two-dimensional translation mechanism. The vibration support table 320 is mounted on a plurality of vertical excitation blocks 220 via vertical support rods 222. The vibration test table 310 is connected to the horizontal excitation blocks 120 of the two horizontal vibration mechanisms 100 via horizontal support rods 122. The horizontal support rod 122 of the X-axis horizontal vibration mechanism is connected to the vibration test table 310 via a first vertical two-dimensional translation mechanism, and the horizontal support rod 122 of the Y-axis horizontal vibration mechanism is connected to the vibration test table 310 via a second vertical two-dimensional translation mechanism.

[0065] A synchronous driving mechanism 400 is used to drive the two first excitation shafts 130 and the plurality of second excitation shafts 230 to rotate synchronously, and to generate excitation due to eccentricity during the rotation process, thereby driving the vibration platform 300 to vibrate in three dimensions; and

[0066] The test box 500 is installed on the vibration platform 300 and is used to place the tested product. The test box 500 is connected to a temperature control component for controlling the temperature inside the box and a humidity control component 540 for controlling the humidity inside the box.

[0067] The present invention can monitor and control the temperature and humidity in the test box 500 in real time by connecting the test box 500 to the temperature control component and the humidity control component 540, thereby realizing a true simulation of the temperature and humidity environment when the tested product is in use; the synchronous driving mechanism 400 is used to drive the two first excitation shafts 130 and the plurality of second excitation shafts 230 to rotate synchronously, wherein one of the first excitation shafts 130 generates X-axial vibration, the other first excitation shaft 130 generates Y-axial vibration, and the second excitation shaft 230 generates Z-axial vibration synchronously. During the rotation of the excitation shaft, the center of gravity will shift under the action of the eccentric mechanism, thereby generating eccentric excitation. Since the excitation shaft is installed on the excitation block, and the horizontal excitation block 120 and the vertical excitation block 220 are installed on the horizontal excitation block through the horizontal sliding mechanism and the vertical sliding mechanism respectively. The vibration platform 300 is mounted on the vibration platform 110 and the vertical vibration platform 210. Therefore, under the eccentric excitation of the first excitation axis 130 and the plurality of second excitation axes 230, the horizontal excitation block 120 and the vertical excitation block 220 respectively perform linear operation along the horizontal sliding mechanism and the vertical sliding mechanism. Since the vibration platform 300 is mounted on all the excitation blocks through the horizontal support rod 122 and the vertical support rod 222, the excitation block will drive the vibration platform 300 to perform three-dimensional vibration in the X-axis, Y-axis and Z-axis directions through the horizontal plane two-dimensional translation mechanism, the first vertical plane two-dimensional translation mechanism and the second vertical plane two-dimensional translation mechanism, and the vibration amplitude of each vibration direction can be adjusted separately, thereby driving the test box 500 mounted on the vibration platform 300 to perform multi-axial coordinated vibration, thereby achieving a real simulation of the vibration environment when the tested product is in use. The present invention can simultaneously drive the rotation of the excitation axes in multiple directions through the synchronous drive mechanism 400, which can maintain the uniformity of the eccentric excitation and thus improve the vibration effect.

[0068] In some embodiments, as Figures 1 to 3As shown, the test apparatus further includes a mounting platform 550, on which the horizontal vibration mechanism 100, the vertical vibration mechanism 200, and the synchronous drive mechanism 400 are all mounted. The test chamber 500 includes a test chamber body 510 and a test chamber door 520 hinged to the test chamber body 510. The temperature control assembly is a heat source 530 mounted on the inner wall of the test chamber body 510, which is used to monitor and adjust the temperature environment within the test chamber 500 in real time. The humidity control assembly 540 includes an atomizer 541 mounted on the mounting platform 550 and an atomizer pipe with two ends connected to the atomizer 541 and mounted in the test chamber 510. A water bottle 542 is mounted on the atomizer 541. The atomizer pipe includes a bellows 543 mounted on the atomizer 541 and a PVC pipe 544 equipped with a nozzle. One end of the PVC pipe 544 is connected to the bellows 543 and the other end is mounted in the test chamber 510. The portion of the PVC pipe 544 extending into the test chamber 510 is equipped with several nozzles for injecting atomized gas into the test chamber 500. When the humidity control assembly 540 is in operation, the atomizer 541 converts the liquid in the water bottle 542 into gas, which is then transported into the test chamber 500 via the bellows 543 and the PVC pipe 544, thereby increasing the humidity within the test chamber 500.

[0069] In some embodiments, as Figure 1 and Figure 2 As shown, a display panel 560 is installed on the mounting platform 550, and a temperature sensor and a humidity sensor are installed in the test box 500. The temperature sensor and the humidity sensor can sense the temperature and humidity in the test box 500 in real time, and transmit the temperature and humidity data to the display panel 560, so that the staff can monitor the temperature and humidity data in real time.

[0070] In some embodiments, as Figure 1 As shown, the bottom of the mounting platform 550 is installed with a ground wheel 551 and a retractable ground foot 552. When the position of the test device needs to be adjusted, the ground foot 552 is shortened so that the ground foot 552 leaves the bottom surface, and the mounting platform 550 is pushed to rotate the ground wheel 551 to achieve the movement of the position of the mounting platform 550; when the mounting platform 550 is moved to a suitable position, the ground foot 552 is extended so that the ground foot 552 is placed on the bottom surface, thereby fixing the position of the mounting platform 550.

[0071] In some embodiments, as Figure 4 and Figure 5 As shown, the synchronous drive mechanism 400 includes a driving gear set 410, two horizontal driven mechanisms 420 and a vertical driven mechanism 430. The driving gear set 410 drives the two horizontal driven mechanisms 420 and the vertical driven mechanism 430 to move synchronously through three sets of first synchronous belts 440. Figure 6As shown, the driving gear set 410 includes a driving base 411 mounted on the mounting platform 550 , a first gear rack 412 mounted on the driving base 411 , and a first horizontal driving bevel gear 413 and a first vertical driving bevel gear 414 mounted on the first gear rack 412 and meshed with each other.

[0072] Specifically, such as Figure 6 and Figure 7 As shown, the drive base 411 is provided with two mutually perpendicular vertical mounting plates 4111, each of which is mounted with a first bearing 4112. The first gear frame 412 is fixedly connected to the drive base 411 by bolts. The first gear frame 412 consists of a horizontal support plate 4121 and two mutually perpendicular vertical support plates 4122 mounted on the sides of the horizontal support plate 4121. Second bearings 4123 are mounted on both the horizontal support plate 4121 and the vertical support plate 4122. The first horizontal drive bevel gear 413 and the first vertical drive bevel gear 414 respectively mate with the inner rings of the second bearings 4123 on the corresponding horizontal support plates 4121 and vertical support plates 4122 on the first gear frame 412. The two vertical mounting plates 4111 are respectively mounted with an X-axis drive shaft 4151 and a Y-axis drive shaft 4152 through a first bearing 4112, and the first gear rack 412 is mounted with a Z-axis drive shaft 4153 through a second bearing 4123. The X-axis drive shaft 4151, the Y-axis drive shaft 4152 and the Z-axis drive shaft 4153 together constitute a drive shaft group 415. One end of the X-axis drive shaft 4151 passes through a vertical mounting plate 4111 and is fixedly connected to the first vertical drive bevel gear 414, and the other end is mounted with a first synchronization shaft 4153. One end of the Y-axis drive shaft 4152 passes through another vertical mounting plate 4111 and engages with the inner ring of the second bearing 4123 on the corresponding vertical support plate 4122 of the first gear rack 412. The other end is also mounted with a first synchronous pulley 450. The Z-axis drive shaft 4153 is fixedly connected to the first horizontal drive bevel gear 413, and its bottom end is connected to the output shaft of the first drive unit 416 via a coupling 417. The top end is also mounted with a first synchronous pulley 450. The first power unit is mounted within the mounting platform 550. The X-axis drive shaft 4151 and the Y-axis drive shaft 4152 are fixedly mounted with meshing second vertical drive bevel gears 418.

[0073] When the first drive device 416 is operating, the output shaft of the first drive device 416 drives the Z-axis drive shaft 4153 to rotate via the coupling 417. The first horizontal bevel drive gear 413, which is fixedly connected to the Z-axis drive shaft 4153, rotates synchronously, thereby driving the first vertical bevel drive gear 414 and the X-axis drive shaft 4151 to rotate, thereby driving the two meshing second vertical bevel drive gears 418 to rotate, and further driving the Y-axis drive shaft 4152 to rotate. Therefore, the present invention can drive the X-axis drive shaft 4151, the Y-axis drive shaft 4152, and the Z-axis drive shaft 4153 to rotate synchronously using only one first drive device 416.

[0074] In some embodiments, as Figures 8 and 9As shown, the two horizontal driven mechanisms 420 have identical structures, but are installed in different orientations, one in the X-axis direction and the other in the Y-axis direction. The horizontal driven mechanism 420 includes a horizontal driven shaft 421, a second gear rack 422, and a first horizontal driven bevel gear 423 and a first vertical driven bevel gear 424 mounted on the second gear rack 422, which are meshed with each other. The first vertical driven bevel gear 424 is axially slidably mounted on the horizontal driven shaft 421. The horizontal driven shafts 421 in the X-axis and Y-axis directions are respectively connected to the X-axis drive shaft 4151 and the Y-axis drive shaft 4152 via a first synchronous belt 440. The two mutually perpendicular first excitation shafts 130 are respectively coaxially fixedly connected to the corresponding first horizontal driven bevel gear 423. The horizontal driven mechanism 420 also includes a horizontal driven base 425 mounted on the mounting platform 550. Specifically, a third bearing 4251 is installed on the horizontal driven base 425, and the horizontal driven shafts 421 in the X-axis horizontal vibration mechanism and the Y-axis horizontal vibration mechanism are respectively arranged parallel to the X-axis drive shaft 4151 and the Y-axis drive shaft 4152. One end of the horizontal driven shaft 421 in the X-axis and Y-axis directions is provided with a second synchronous pulley 460 and is respectively connected to the first synchronous pulley 450 at the end of the X-axis drive shaft 4151 and the Y-axis drive shaft 4152 through the first synchronous belt 440. When the X-axis drive shaft 4151 and the Y-axis drive shaft 4152 rotate, the horizontal driven shaft 421 will be driven to rotate through the first transmission belt; the other end of the horizontal driven shaft 421 is installed on the horizontal driven base 425 and cooperates with the inner ring of the third bearing 4251. The second gear rack 422 includes a horizontal plate 4221 and a vertical plate 4222, each of which is perpendicular to the other. A fourth bearing 4223 is mounted on each of the horizontal and vertical plates 4221 and 4222. The first vertical driven bevel gear 424 and the first horizontal driven bevel gear 423 respectively engage with the inner races of the fourth bearing 4223 on the vertical and horizontal plates 4222 and 4221. A sliding groove is axially provided on the horizontal driven shaft 421, and a protrusion is provided on the first vertical driven bevel gear 424. The first vertical driven bevel gear 424 is slidably mounted on the horizontal driven shaft 421 through the engagement of the protrusion with the sliding groove. Rotation of the horizontal driven shaft 421 drives the first vertical driven bevel gear 424, which in turn drives the first horizontal driven bevel gear 423.

[0075] In some embodiments, as Figure 8 and Figure 10As shown, the horizontal excitation seat 110 is installed on the mounting platform 550, one end of the first excitation shaft 130 is fixedly connected to the first horizontal driven bevel gear 423, and the other end is installed with a first horizontal eccentric block 141 and a second horizontal eccentric block 142 with adjustable relative angles. The horizontal sliding mechanism is a plurality of parallel horizontal sliding shafts 111 provided on the horizontal excitation seat 110, and the horizontal sliding shafts 111 are parallel to the corresponding horizontal driven shafts 421. A fifth bearing 121 is installed on the horizontal excitation block 120, and the first excitation shaft 130 passes through the horizontal excitation block 120 and cooperates with the inner ring of the fifth bearing 121. One end of the horizontal support rod 122 is fixed to the horizontal excitation block 120, and the other end is connected to the vibration platform 300. The horizontal excitation seat 110 and the horizontal sliding shaft 111 not only support the first excitation shaft 130 and the horizontal excitation block 120, thereby improving the stability of the test device, but also serve as a limiter, so that the first excitation shaft 130 and the horizontal excitation block 120 can only move horizontally along the horizontal sliding shaft 111 under the action of eccentric rotation. When the first horizontal driven bevel gear 423 rotates, it will drive the first excitation shaft 130 to rotate synchronously, and the first horizontal eccentric block 141 and the second horizontal eccentric block 142 will rotate together with the first excitation shaft 130. Under the action of eccentric rotation, the first excitation shaft 130 and the horizontal excitation block 120 will perform horizontal reciprocating motion along the horizontal sliding shaft 111, and drive the first vertical driven bevel gear 424 to perform horizontal reciprocating motion along the horizontal driven shaft 421. At the same time, the horizontal excitation block 120 will drive the vibration platform 300 to perform reciprocating motion in the X-axis and Y-axis directions through the horizontal support rod 122, thereby realizing vibration testing in the X-axis and Y-axis directions.

[0076] As a preferred embodiment, Figures 8 to 10 As shown, two sections of first buffer springs 4211 are mounted on the horizontal driven shaft 421, and the first vertical driven bevel gear 424 is axially slidably mounted on the horizontal driven shaft 421 and positioned between the two sections of first buffer springs 4211. Two sections of third buffer springs 112 are mounted on each horizontal sliding shaft 111, and the horizontal excitation block 120 is axially slidably mounted on the horizontal sliding shaft 111 and positioned between the two sections of third buffer springs 112. The first buffer springs 4211 and the third buffer springs 112 ensure smooth horizontal reciprocating motion of the first vertical driven bevel gear 424 and the horizontal excitation block 120, thereby improving the effectiveness of the vibration test.

[0077] In some embodiments, the first horizontal eccentric block 141 and the second horizontal eccentric block 142 are two identical eccentric blocks, and the amplitude of the horizontal vibration test is inversely proportional to the angle between the first horizontal eccentric block 141 and the second horizontal eccentric block 142. Specifically, the horizontal amplitude of the present invention is set to H, and the angle between the first horizontal eccentric block 141 and the second horizontal eccentric block 142 is α (0°≤α≤180°), H=m×v×k×(180°-α°). Among them, m is the mass of the eccentric block, v is the rotational speed of the first excitation shaft 130, and k is the empirical correction coefficient obtained from multiple tests, k>0.

[0078] When the first horizontal eccentric block 141 and the second horizontal eccentric block 142 coincide with each other (i.e., α=0°), the eccentric mass is the largest. At this time, the amplitude of the excitation generated by the first excitation axis 130 is the largest, that is, the horizontal amplitude of the vibration platform 300 is the largest; as the angle between the first horizontal eccentric block 141 and the second horizontal eccentric block 142 increases, the eccentric mass gradually decreases, and the horizontal amplitude of the dynamic platform also decreases accordingly; when α=180°, that is, when the first horizontal eccentric block 141 and the second horizontal eccentric block 142 are symmetrical with the first excitation axis 130 as the axis center, the eccentric mass is 0, and at this time the first excitation axis 130 will not generate excitation, that is, the horizontal amplitude of the vibration platform 300 H=0. By adjusting the angles between the first horizontal eccentric block 141 and the second horizontal eccentric block 142 on the two first excitation axes 130 respectively, the amplitudes in the X-axis and Y-axis directions can be controlled respectively. At the same time, it is also possible to choose to perform vibration tests in only one horizontal direction or to perform vibration tests in both the X-axis and Y-axis directions simultaneously.

[0079] In some embodiments, as Figure 8 and Figure 9 As shown, the horizontal driven mechanism 420 further includes an auxiliary base 426 mounted on the mounting platform 550. A horizontal slider 4261 is provided on the auxiliary base 426, oriented in the same direction as the horizontal driven shaft 421. A horizontal slide rail 4224 is provided on the second gear rack 422, cooperating with the horizontal slider 4261 to form a horizontal sliding pair. The auxiliary base 426 and the horizontal sliding pair not only enhance structural stability but also provide a degree of freedom for the horizontal reciprocating motion of the horizontal driven gear set.

[0080] In some embodiments, as Figures 11 to 13As shown, the vertical driven mechanism 430 includes a third gear rack 431 and several groups of synchronous vertical driven gear sets mounted on the third gear rack 431, and the vertical driven gear sets each include a first vertical driven shaft 432 and a meshing second horizontal driven bevel gear 433 and two second vertical driven bevel gears 434, each first vertical driven shaft 432 is installed with two sections of second buffer springs 4321, the second horizontal driven bevel gear 433 can be axially slidably installed on the first vertical driven shaft 432 and is located between the two sections of second buffer springs 4321, and each second vertical driven bevel gear 434 is fixedly connected to each second excitation shaft 230 respectively; the vertical driven mechanism 430 also includes a vertical driven base 435 and a second vertical driven shaft 436 mounted on the mounting platform 550, and all the first vertical driven shafts 432 are connected to the second vertical driven shaft 436 through a second synchronous belt 437.

[0081] Specifically, such as Figure 11 and Figure 12 As shown, the vertical driven gear sets are provided in two groups. The third gear frame 431 is composed of a base plate 4311 and side plates 4312 located on opposite sides of the base plate 4311. Sixth bearings 4314 are mounted on both the base plate 4311 and the side plates 4312. The second horizontal driven bevel gear 433 and the two second vertical driven bevel gears 434 respectively engage with the inner rings of the sixth bearings 4314 on the base plate 4311 and the side plates 4312. Each first vertical driven shaft 432 is axially provided with a sliding groove. The second horizontal driven bevel gear 433 is provided with a protrusion that engages with the sliding groove and is slidably mounted on the corresponding first vertical driven shaft 432. When the first vertical driven shaft 432 rotates, it drives the second horizontal driven bevel gear 433 to rotate, which in turn drives the second vertical driven bevel gear 434 to rotate. The vertical excitation blocks 220 are arranged in pairs, and there are no less than two pairs; the two second vertical driven bevel gears 434 are respectively fixedly connected to the corresponding second excitation shafts 230 on the two pairs of vertical excitation blocks 220, so that under the drive of the second horizontal driven bevel gear 433, the two second vertical driven bevel gears 434 rotate synchronously in the same direction, and drive each pair of second excitation shafts 230 to rotate synchronously.

[0082] like Figure 12 and Figure 13As shown, the vertical driven base 435 includes an upper support plate 4351 and a lower support plate 4352 that are fixedly connected. A space for installing the second synchronous belt 437 is reserved between the upper support plate 4351 and the lower support plate 4352. A seventh bearing 4353 and two vertical shafts 4354 are provided on the lower support plate 4352. The second vertical driven shaft 436 is arranged parallel to the Z-axial drive shaft 4153. A second synchronous pulley 460 is installed on the top of the second vertical driven shaft 436 and is connected to the first synchronous pulley 450 on the Z-axial drive shaft 4153 via a first synchronous belt 440. The bottom of the second vertical driven shaft 436 is mounted on the lower support plate 4352 and cooperates with the inner ring of the seventh bearing 4353. When the Z-axial drive shaft 4153 rotates, the second vertical driven shaft 436 is driven to rotate synchronously via the first transmission belt. A third synchronous pulley 438 is mounted on each of the second vertical driven shaft 436 and the column 4354. The column 4354 is connected to the third synchronous pulley 438 thereon via a bearing structure, and the third synchronous pulley 438 on the column 4354 is fixedly connected to the first vertical driven shaft 432. All third synchronous pulleys 438 are synchronously connected via a second synchronous belt 437. When the second vertical driven shaft 436 is driven by the first synchronous belt 440 to rotate along the Z-axis drive shaft 4153, each third synchronous pulley 438 is driven to rotate synchronously via the second synchronous belt 437, thereby achieving synchronous rotation of each first vertical driven shaft 432, thereby driving synchronous rotation of each set of vertical driven gear groups, and further driving synchronous rotation of all second exciting shafts 230, thereby achieving synchronous vibration.

[0083] In some embodiments, as Figure 11 and Figure 14As shown, the vertical excitation blocks 220 are arranged in two pairs. One end of the second excitation shaft 230 corresponding to each pair of vertical excitation blocks 220 is fixedly connected to the two second vertical driven bevel gears 434 of each vertical driven gear set, and the other end is installed with a first vertical eccentric block 241 and a second vertical eccentric block 242 with adjustable relative angles. The vertical excitation base 210 corresponds one-to-one with the vertical excitation blocks 220 and is also arranged in two pairs, both of which are mounted on the upper support plate 4351. The vertical sliding mechanism is a plurality of parallel vertical sliding shafts 211 arranged on the vertical excitation base 210. The vertical sliding shafts 211 are parallel to the first vertical driven shaft 432. An eighth bearing 221 is mounted on the vertical excitation block 220. The second excitation shaft 230 passes through the corresponding vertical excitation block 220 and cooperates with the inner ring of the eighth bearing 221. Each vertical excitation block 220 is provided with a vertical support rod 222. One end of the vertical support rod 222 is fixed to the vertical excitation block 220, and the other end is fixedly connected to the vibration support table 320. The vertical excitation seat 210 and the vertical sliding shaft 211 not only support the second excitation shaft 230 and the vertical excitation block 220, thereby improving the stability of the test device, but also serve as a limiter, so that the second excitation shaft 230 and the vertical excitation block 220 can only move in the vertical direction along the vertical sliding shaft 211 under the action of eccentric rotation. When all the second excitation shafts 230 rotate synchronously, each second horizontal driven bevel gear 433 will drive the two second vertical driven bevel gears 434 that are expected to mesh synchronously to rotate in the same direction, thereby driving each pair of second excitation shafts 230 to rotate synchronously, and the first vertical eccentric block 241 and the second vertical eccentric block 242 will rotate together with the second excitation shaft 230. Under the action of eccentric rotation, the second excitation shaft 230 and the vertical excitation block 220 will perform vertical reciprocating motion along the vertical sliding shaft 211, and drive the vertical driven gear set to perform vertical reciprocating motion along the first vertical driven shaft 432. At the same time, all the vertical excitation blocks 220 will drive the vibration platform 300 to perform reciprocating motion in the Z-axis direction through the vertical support rod 222, thereby realizing Z-axis vibration testing. By setting up multiple sets of vertical support rods 222, not only can the vibration platform 300 be driven to achieve vibration, but the test platform and the tested product can also be stably supported, thereby improving the structural strength and stability of the test device.

[0084] As a preferred embodiment, Figure 11 and Figure 12As shown, two sections of second buffer springs 4321 are installed on the first vertical driven shaft 432, and the second horizontal driven bevel gear 433 can be axially slidably installed on the first vertical driven shaft 432 and located between the two sections of second buffer springs 4321. The second buffer springs 4321 can, on the one hand, provide axial support for the second horizontal driven bevel gear 433, reducing the load on the second horizontal driven bevel gear 433 and extending its service life. On the other hand, they can also ensure that the second horizontal driven bevel gear 433 performs smooth up and down reciprocating motion, thereby improving the effect of the vibration test. Two sections of fourth buffer springs 212 are installed on each vertical sliding shaft 211, and the vertical excitation block 220 can be axially slidably installed on the vertical sliding shaft 211 and located between the two sections of fourth buffer springs 212. The fourth buffer springs 212 can, on the one hand, provide axial support for the vertical excitation block 220, improving stability. On the other hand, they can also ensure that the vertical excitation block 220 performs smooth up and down reciprocating motion, thereby improving the effect of the vibration test.

[0085] In some embodiments, as Figure 12 As shown, at least one vertical slide rail 4313 is provided on each of the two side plates 4312 of the third gear rack 431, and a vertical slider 4355 cooperating with several of the vertical slide rails 4313 is provided on the upper support plate 4351 to form multiple sets of vertical sliding pairs. When the vertical excitation block 220 drives the vertical driven gear group to perform Z-axial reciprocating motion, the multiple sets of vertical sliding pairs can provide support and Z-axial movement freedom for the vertical driven gear group, prevent the vertical driven gear group from being worn due to excessive load, and improve its service life.

[0086] In some embodiments, the first vertical eccentric mass 241 and the second vertical eccentric mass 242 are arranged in the same manner as the first horizontal eccentric mass 141 and the second horizontal eccentric mass 142. Therefore, the present invention can achieve stepless adjustment of the X-axis and Y-axis amplitudes by controlling the angles between the two groups of first horizontal eccentric masses 141 and the second horizontal eccentric masses 142, and achieve stepless adjustment of the Z-axis amplitude by controlling the angle between the first vertical eccentric mass 241 and the second vertical eccentric mass 242. At the same time, by adjusting the angle between one or more groups of eccentric masses to 180°, vibration in any single direction, any two directions, and three mutually perpendicular directions can be achieved, so that the present invention can meet different vibration test requirements.

[0087] As an example, Figure 15 and Figure 16As shown, the horizontal two-dimensional translation mechanism includes a first guide rail mounting platform 330 arranged between the vibration test platform 310 and the vibration support platform 320. The first guide rail mounting platform 330 is connected to the vibration test platform 310 through a plurality of first X-axial sliding pairs 331, and the first guide rail mounting platform 330 is connected to the vibration support platform 320 through a plurality of first Y-axial sliding pairs 332 to form a horizontal two-dimensional translation mechanism. The vibration test platform 310 is provided with a second guide rail mounting platform 340 and a third guide rail mounting platform 350 on two vertical sides near the X-axis horizontal vibration mechanism and the Y-axis horizontal vibration mechanism, respectively, to form a first vertical two-dimensional translation mechanism and a second vertical two-dimensional translation mechanism. The second guide rail mounting platform 340 is connected to the horizontal support rod 122 of the X-axis horizontal vibration mechanism via a second Y-axis sliding pair 341, and the second guide rail mounting platform 340 is connected to the vibration test platform 310 via a plurality of first Z-axis sliding pairs 342. The third guide rail mounting platform 350 is connected to the horizontal support rod 122 of the Y-axis horizontal vibration mechanism via a second X-axis sliding pair 351, and the third guide rail mounting platform 350 is connected to the vibration test platform 310 via a plurality of second Z-axis sliding pairs 352. The provision of a plurality of sliding pairs in the X-axis, Y-axis, and Z-axis directions on the vibration platform 300 provides three-dimensional motion with degrees of freedom, thereby achieving vibration in the X-axis, Y-axis, and Z-axis directions.

[0088] In the present application, the horizontal plane two-dimensional translation mechanism, the first vertical plane two-dimensional translation mechanism and the second vertical plane two-dimensional translation mechanism may also adopt other structures, as long as the vibration platform 300 can be driven by two horizontal vibration mechanisms 100 and a vertical vibration mechanism 200 to realize vibration testing in the X-axis, Y-axis and Z-axis directions.

[0089] As an example, Figure 17As shown, the vertical driven base 435 is mounted with a plurality of synchronous belt retaining devices 600. These synchronous belt retaining devices 600 include a toggle clamp base 610 and a clamping rail 620 mounted on the lower support plate 4352, as well as a toggle clamp 630 and a clamping slider 640 mounted on the toggle clamp base 610 and the clamping rail 620, respectively. The clamping slider 640 is mounted with a clamping push block 650, the end of which is provided with a clamping roller 660 capable of contacting the second synchronous belt 437. One end of the toggle clamp 630 is fixedly connected to the clamping push block 650, and the other end is hingedly connected to a rotary handle 631. Because the second synchronous belt 437 rotates at a relatively high speed during operation of the vibration test apparatus of the present invention, the synchronous belt retaining devices 600 can prevent the second synchronous belt 437 from deviating. Specifically, by turning the rotating handle 631 downward, the elbow clamp 630 will push the clamping push block 650 to move, so that the clamping roller 660 is just in contact with the second synchronous belt 437. During the rotation of the second synchronous belt 437, the clamping roller 660 will rotate along with the second synchronous belt 437, maintaining the position of the second synchronous belt 437, and preventing the second synchronous belt 437 from deviating during rotation, thereby affecting the normal operation of the present invention.

[0090] As an example, Figure 18 As shown, a synchronous belt pre-tensioning device 700 is installed on the vertical plates 4222 of the two second gear racks 422 and the lower support plate 4352 of the vertical driven base 435, and the synchronous belt pre-tensioning device 700 includes a pre-tensioning base 710 installed on the vertical plate 4222 and the lower support plate 4352, a second power device 720 installed on the pre-tensioning base 710, a pre-tensioning push block 730 installed on the end of the second power device 720 and a pre-tensioning roller 740 rotatably installed on the pre-tensioning push block 730, a fixed shaft 731 is installed on the pre-tensioning push block 730, a ninth bearing 732 is installed on the fixed shaft 731, and the pre-tensioning roller 740 is rotatably installed on the fixed shaft 731 through the ninth bearing 732. When the pre-tightening force of the synchronous belt is insufficient, the second power device 720 will work to make the pre-tightening push block 730 extend forward, and the pre-tightening roller 740 will push out the loose edge of the synchronous belt, so that the synchronous belt remains in a tensioned state to ensure the transmission effect.

[0091] The above embodiments are intended to illustrate the present invention only and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be encompassed by the scope of the claims of the present invention.

Claims

1. A temperature-humidity-vibration coupling test device, characterized in that: include: Two horizontal vibration mechanisms, namely an X-axis horizontal vibration mechanism and a Y-axis horizontal vibration mechanism with different installation orientations but the same structure, each of the horizontal vibration mechanisms includes a horizontal excitation base, a horizontal excitation block mounted on the horizontal excitation base via a horizontal sliding mechanism, a first excitation shaft mounted on the horizontal excitation block via a rotating pair, and a horizontal eccentric device mounted on the first excitation shaft. The first excitation shafts of the two horizontal vibration mechanisms are arranged perpendicular to each other, and the eccentric mechanisms enable the two first excitation shafts to drive the two horizontal excitation blocks to vibrate horizontally in the X-axis and Y-axis directions respectively during the process of rotation; The vertical vibration mechanism includes a plurality of vertical excitation bases, a vertical excitation block mounted on each vertical excitation base via a vertical sliding mechanism, a second excitation shaft mounted on each vertical excitation block via a rotating pair, and a vertical eccentric device mounted on the second excitation shaft. The eccentric mechanism causes the second excitation shaft to drive the vertical excitation block to vibrate in the vertical direction during rotation. A vibration platform comprises a vibration test bench and a vibration support platform, wherein the vibration test bench is mounted on the vibration support platform via a horizontal two-dimensional translation mechanism, and the vibration support platform is mounted on a plurality of vertical excitation blocks via vertical support rods. The vibration test bench is connected to the horizontal excitation blocks of the two horizontal vibration mechanisms via horizontal support rods, wherein the horizontal support rod of the X-axis horizontal vibration mechanism is connected to the vibration test bench via a first vertical two-dimensional translation mechanism, and the horizontal support rod of the Y-axis horizontal vibration mechanism is connected to the vibration test bench via a second vertical two-dimensional translation mechanism; A synchronous driving mechanism is used to drive the two first excitation shafts and the plurality of second excitation shafts to rotate synchronously, and to generate excitation due to eccentricity during the rotation process, thereby driving the vibration platform to perform three-dimensional vibration; as well as A test box, mounted on a vibration platform, for placing the product under test, the test box being connected to a temperature control component for controlling the temperature inside the box and a humidity control component for controlling the humidity inside the box; The synchronous drive mechanism includes a driving gear set, two horizontal driven mechanisms and a vertical driven mechanism, and the driving gear set drives the horizontal driven mechanism and the vertical driven mechanism to move synchronously through three sets of first synchronous belts; The driving gear set includes a driving base, a first gear rack installed on the driving base, and a first horizontal driving bevel gear and a first vertical driving bevel gear installed on the first gear rack. An X-axial driving shaft and a Y-axial driving shaft are installed on the driving base, and a Z-axial driving shaft is installed on the gear rack. The X-axial driving shaft is fixedly connected to the first vertical driving bevel gear, and the Y-axial driving shaft is connected to the first gear rack through a rotating pair. The Z-axial driving shaft is fixedly connected to the first horizontal driving bevel gear and one end is connected to the first driving device. A second vertical driving bevel gear that is meshed with each other is fixedly installed on the X-axial driving shaft and the Y-axial driving shaft.

2. A temperature-humidity-vibration coupling test device according to claim 1, characterized in that: The temperature control component is a heat source installed on the inner wall of the test box.

3. A temperature-humidity-vibration coupling test device according to claim 2, characterized in that: The test device further comprises a mounting platform, the humidity control assembly comprises an atomizer mounted on the mounting platform and an atomizer tube with two ends respectively connected to the atomizer and the test box, and a water bottle is mounted on the atomizer.

4. The temperature-humidity-vibration coupling test device according to claim 1, characterized in that: The two horizontal driven mechanisms each include a horizontal driven shaft, a second gear rack, and a first horizontal driven bevel gear and a first vertical driven bevel gear meshing with each other and installed on the second gear rack. Two sections of first buffer springs are installed on the horizontal driven shaft. The first vertical driven bevel gear can be axially slidably installed on the horizontal driven shaft and is located between the two sections of first buffer springs. The two horizontal driven shafts are respectively connected to the X-axial drive shaft and the Y-axial drive shaft through the first synchronous belt, and the two first excitation shafts are respectively fixedly connected to the corresponding first horizontal driven bevel gears.

5. A temperature-humidity-vibration coupling test device according to claim 4, characterized in that: The vertical driven mechanism includes a third gear rack and several groups of synchronous vertical driven gear sets mounted on the third gear rack, each of the vertical driven gear sets includes a first vertical driven shaft and a second horizontal driven bevel gear and two second vertical driven bevel gears meshing with each other, each first vertical driven shaft is mounted with two sections of second buffer springs, the second horizontal driven bevel gear is axially slidably mounted on the first vertical driven shaft and is located between the two sections of second buffer springs, and each second vertical driven bevel gear is fixedly connected to each second exciting shaft; The vertical driven mechanism also includes a vertical driven base and a second vertical driven shaft, one end of the second vertical driven shaft is connected to the Z-axis drive shaft through a first synchronous belt, and the other end is installed on the vertical driven base through a rotating pair, and all the first vertical driven shafts are connected to the second vertical driven shaft through a second synchronous belt.

6. A temperature-humidity-vibration coupling test device according to claim 5, characterized in that: The horizontal eccentric device includes a first horizontal eccentric block and a second horizontal eccentric block installed on the first excitation shaft and capable of adjusting the relative angle. The vertical eccentric device includes a first vertical eccentric block and a second vertical eccentric block installed on the second excitation shaft and capable of adjusting the relative angle.

7. The temperature-humidity-vibration coupling test device according to claim 4, characterized in that: The horizontal driven mechanism further comprises an auxiliary base, on which a horizontal sliding block parallel to the corresponding horizontal driven shaft is provided, and the second gear rack is provided with a horizontal slide rail matched with the horizontal sliding block.

8. The temperature-humidity-vibration coupling test device according to claim 1, characterized in that: The horizontal two-dimensional translation mechanism includes a first guide rail mounting platform, the first guide rail mounting platform is connected to the vibration test platform through a first X-axial sliding pair, and the first guide rail mounting platform is connected to the vibration support platform through a first Y-axial sliding pair.

9. The temperature-humidity-vibration coupling test device according to claim 8, characterized in that: The first vertical two-dimensional translation mechanism includes a second guide rail mounting platform, the second guide rail mounting platform is connected to the horizontal support rod of the X-axis horizontal vibration mechanism through a second Y-axis sliding pair, and the second guide rail mounting platform is connected to the vibration test platform through a first Z-axis sliding pair; the second vertical two-dimensional translation mechanism includes a third guide rail mounting platform, the third guide rail mounting platform is connected to the horizontal support rod of the Y-axis horizontal vibration mechanism through a second X-axis sliding pair, and the third guide rail mounting platform is connected to the vibration test platform through a second Z-axis sliding pair.

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