A water tightness test device for electronic equipment chassis

Abstract

The present invention discloses a watertightness test device for electronic equipment chassis, which belongs to the technical field of watertightness test for electronic equipment, and includes a water tank and a lifting structure, wherein the lifting structure includes a lifting rod extending into the water tank, a driving motor arranged on the water tank for driving the lifting rod to move, and a platform arranged at the bottom of the lifting rod for placing the chassis to be tested; the platform is also connected to multiple groups of hanging assemblies for maintaining the horizontality of the platform, each group of hanging assemblies includes a horizontal motor arranged above the platform, a first pulley arranged on the bottom surface of the water tank, and a second pulley arranged on the upper edge of the water tank, and the output head of each horizontal motor is wound around a balance line, and the balance line passes through the first pulley and the second pulley in sequence, and is finally connected to a hook arranged on the upper surface of the clamping platform. The invention mainly improves the watertight chassis test technology of electronic equipment, can adapt to chassis of different forms, can accurately adjust the test depth of the chassis, and has clearer control over test variables.

Description

Technical Field

[0001] The invention belongs to the technical field of water tightness test of electronic equipment, in particular to a water tightness test device for an electronic equipment chassis. Background Art

[0002] With the rapid development of the current communications industry, electronic equipment chassis are widely used in military and civilian fields. Since most of the components in the equipment are electronic components, their working environment is often more harsh, which requires the chassis to have a certain waterproof performance. In the design process of the chassis, its watertightness performance is its main indicator.

[0003] At present, the methods for conducting chassis water tests are mainly divided into three methods: dripping, flushing and immersion. Relevant tests are carried out according to different protection requirements of the equipment, and the methods used are also different. The dripping test mainly uses open-air rainwater for testing, and the test is greatly affected by the weather. The flushing test mainly uses a shower head for flushing, which requires manual hand-held to meet different angles. The method needs to be performed manually, and the overall rain level is greatly affected by manual labor. The immersion test mainly uses the chassis to be immersed in a certain depth of water for a corresponding soaking time, but when the chassis is immersed in the water tank, a certain number of weights are usually added to the chassis to make the chassis sink to a certain depth, but the weight inside the chassis is often unevenly distributed. After the chassis sinks, there may be a certain degree of overturning, and the chassis may be unstable.

[0004] From the above analysis, it can be found that the existing watertightness detection methods have some shortcomings: the currently used watertightness detection methods do not have a unified set of devices that can simultaneously meet the requirements of the above-mentioned related tests. The test methods are greatly affected by factors such as human labor and weather. The tests are relatively cumbersome to conduct, and the labor cost of the test itself will also be high. Summary of the invention

[0005] The purpose of the present invention is to avoid the shortcomings of the above-mentioned background technology and provide an electronic equipment chassis water tightness test device. The device can complete the chassis water tightness test under various complex conditions, fully reducing the test deficiencies caused by the influence of environmental and human factors in the test, making the test more simplified. At the same time, since the equipment control is all electronically controlled, people only need to simply install the chassis, saving manpower and material resources.

[0006] The technical solution provided by the present invention is:

[0007] An electronic equipment chassis water tightness test device comprises a water tank and a lifting structure, wherein the lifting structure comprises a lifting rod extending into the water tank, a driving motor arranged on the water tank for driving the lifting rod to move, and a platform arranged at the bottom end of the lifting rod for placing the chassis to be tested;

[0008] The platform is also connected to multiple sets of hanging assemblies for maintaining the horizontality of the platform. Each set of hanging assemblies includes a horizontal motor arranged above the platform, a changing pulley arranged on the bottom of the water tank, and a fixed pulley arranged on the upper edge of the water tank. The output head of each horizontal motor is wound with a balance line, and the balance line passes through the changing pulley and the fixed pulley in turn, and is finally connected to a hook arranged on the upper surface of the clamping platform.

[0009] Furthermore, a transverse plate is provided above the water tank, and the driving motor and the horizontal motor are both fixed on the transverse plate.

[0010] Furthermore, the lifting rod is a rack, and a gear box is provided at the output end of the driving motor, and the lifting rod is meshed and matched with the gear box.

[0011] Furthermore, a embedding groove is provided on the top of the water tank, and two sides of the transverse plate are inserted into the embedding groove.

[0012] Furthermore, a spray unit is provided in the water tank, and the spray unit includes two vertical electric cylinders, horizontal slide rails arranged on the telescopic ends of the two vertical electric cylinders, a horizontal electric cylinder arranged on the slide rails, and a horizontal slider arranged on the slide rails and driven by the horizontal electric cylinder, the horizontal slider is connected to the nozzle, and the water inlet end of the nozzle is connected to the liquid delivery pump.

[0013] Furthermore, the platform includes two horizontal pressing plates arranged opposite to each other up and down, and a plurality of radial waist holes are provided on the horizontal pressing plates, and bolts are inserted into the corresponding waist holes of the two horizontal pressing plates to connect them.

[0014] Furthermore, a vertical slide rail is provided on the outside of the water tank, a connecting arm is connected to the vertical slide rail via a vertical slider, and the end of the connecting arm is connected to the camera.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The device can be used to conduct a variety of watertightness tests, reducing manpower and material resources.

[0017] (2) The upper and lower horizontal pressure plates of the chassis fixing device of the device have slotted holes, which can adapt to chassis of different sizes.

[0018] (3) The rain shower device of this device is composed of a mechanical arm, a variable direction nozzle and a stepper motor, which can realize a 360-degree all-round rain shower test.

[0019] (4) This device is designed with a chassis lifting structure, assisted by a chassis leveling device, which can meet the requirements of the chassis immersion test and has strong reliability.

[0020] (5) The patent of the present invention designs a shower device for the water tightness test of the chassis that can meet various situations. It is mainly composed of a nozzle with controllable flow, a water pump, a nozzle direction regulator, a vertical electric cylinder 24, a slide rail 25, a mechanical arm 26, and a nozzle 27. The dripping and raining tests are mainly carried out by spraying water from the nozzle. The nozzle can control the size of the water flow rate. The rotation of the horizontal screw and the vertical screw drives the lifting and plane movement of the nozzle. By adjusting the nozzle direction regulator and the mechanical arm, etc., the angle of the nozzle can be adjusted to achieve 360-degree water spraying without dead angles on the chassis, which fully meets the complexity of the test environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an electronic equipment chassis water tightness test device in an embodiment of the present invention.

[0022] Figure 2 yes Figure 1 Structural diagram of the middle water tank.

[0023] Figure 3 yes Figure 1 The structural diagram of the platform.

[0024] Figure 4 yes Figure 1 Structural diagram of the middle lifting structure.

[0025] Figure 5 yes Figure 1 Structural diagram of the shower device.

[0026] In the figure: a horizontal plate 2, a platform 3, a spray unit 4, a lifting structure 5, a liquid delivery pump 7, a change-of-direction pulley 10, a fixed pulley 11, a vertical slide rail 12, a camera 13, a horizontal slider 14, a horizontal pressure plate 15, a bolt 17, a hook 18, a drive motor 19, a lifting rod 21, a horizontal motor 23, a vertical electric cylinder 24, a horizontal slide rail 25, a robotic arm 26, and a nozzle 27. DETAILED DESCRIPTION

[0027] The following is based on the attached Figure 1-5 The present invention is further described:

[0028] The overall test conditions of the electronic equipment chassis water tightness test device are divided into dripping, flushing and immersion working conditions. The specific implementation plan is as follows:

[0029] An electronic equipment chassis water tightness test device comprises a water tank and a lifting structure, wherein the lifting structure comprises a lifting rod extending into the water tank, a driving motor arranged on the water tank for driving the lifting rod to move, and a platform arranged at the bottom end of the lifting rod for placing the chassis to be tested;

[0030] The platform is also connected to multiple groups of hanging assemblies for maintaining the horizontality of the platform, each group of hanging assemblies includes a horizontal motor arranged above the platform, a first pulley arranged at the bottom of the water tank and a second pulley arranged at the upper edge of the water tank, the bottom of the water tank is arranged with a change-of-direction pulley 10, the upper edge of the water tank is arranged with a fixed pulley 11, the horizontal motor is arranged above the platform, the balance line wound around the output head of each horizontal motor bypasses the first pulley and the second pulley from bottom to top, and is finally connected to a hook arranged on the upper surface of the clamping platform, a transverse plate 2 is arranged above the water tank, the horizontal motor is fixed on the transverse plate, the top of the water tank is provided with an embedded groove, the two sides of the transverse plate 2 are matched in the embedded groove through transverse sliders 14, and the transverse plate realizes sliding through the sliders.

[0031] The lifting structure also includes a driving motor 19 and a gear box. The lifting rod 21 is a rack. The lifting rod is meshed with the gear box. The output end of the driving motor is connected to the gear box.

[0032] It also includes a spray unit, which includes: two vertical electric cylinders 24 are fixed along any side surface in the water tank, a horizontal slide rail 25 is horizontally placed at the lifting end of the two vertical electric cylinders, a horizontal electric cylinder 25 is fixed on the horizontal slide rail, the telescopic end of the horizontal electric cylinder is connected to the horizontal slider installed on the horizontal slide rail, the horizontal slider is connected to a mechanical arm 26, a nozzle 27 facing the platform is arranged at the end of the mechanical arm, the nozzle is connected to the mechanical arm through a rotating unit, the rotating unit is composed of a motor and a turntable, the direction of the nozzle is controlled by the rotating unit, the water inlet end of the nozzle is connected to a liquid delivery pump 7, a vertical slide rail 12 is also arranged on the outside of the water tank, a connecting arm is connected to the vertical slide rail through a vertical slider, the end of the connecting arm is connected to a camera 13, the displacement of the nozzle is controlled by the cooperation of the horizontal electric cylinder and the vertical electric cylinder, and the spraying amount is observed by the camera.

[0033] The platform 2 includes two horizontal pressing plates 15 arranged opposite to each other up and down. The horizontal pressing plates have a plurality of radial waist holes extending outward from the center. Bolts 17 are inserted into the waist holes of the two horizontal pressing plates for connection.

[0034] The implementation mechanism of the present invention is:

[0035] The technical solution adopted by the patent of this invention is mainly innovatively designed based on the relevant requirements of the standard GB / T2423.38-2008 for the water tightness test of the electronic equipment chassis. This test device can easily achieve the relevant requirements of the standard GB / T2423.38-2008 for the chassis water tightness test.

[0036] Start the driving motor 19 in the chassis lifting structure, and control the rotation of the motor to convert the rotation of the motor into the vertical movement of the lifting rod 21. At this time, since the force on the chassis is within the bearing range of the lifting rod, the test can be completed without starting the chassis horizontal adjustment device. Adjust the rain shower device 4, control the horizontal electric cylinder 25 and the vertical electric cylinder 24 to rotate, adjust the position of the nozzle 27, and adjust the mechanical arm 26 and the nozzle direction controller 28 to control the nozzle direction. Start the steam spray switch to spray steam from the nozzle mouth. Control the steam spray amount to meet the relevant requirements of the drip test.

[0037] Flush test: The operating procedure of the flush test is similar to that of the drip test. After the chassis is fixed and the nozzle direction is adjusted, water is sprayed outward through the nozzle only to achieve the flush test.

[0038] Water immersion test: The water immersion test mainly involves placing the chassis in a water tank and immersing it at a certain depth for a period of time. The preparation stage before the test is to connect the steel wire rope of the chassis leveling device to the hook 18 of the lower horizontal pressure plate on the basis of the preparation connection for the water immersion test, start the horizontal motor 23 of the leveling device, and while controlling the lifting structure of the chassis to rise and fall, the horizontal motor 23 for leveling through the hanging assembly is rotated to pull the steel wire rope, fully ensuring that the chassis remains horizontal during the descent process and reducing the torque generated on the lifting rod.

[0039] According to the standard, the device has three working states, namely dripping, flushing and immersion.

[0040] All three working states first require that the chassis be fixed by a horizontal pressure plate of the chassis fixing device, and the chassis be fixed by tightening the stud nut fastener 17, and the horizontal pressure plate is connected to the flange of the lifting mechanism, and the driving motor 19 of the lifting mechanism is started to drive the motor to rotate at a uniform speed. The lifting mechanism adopts a gear rack structure 20. When the motor rotates, it will be converted into vertical movement of the lifting rod, and the vertical movement of the lifting rod 21 will drive the lifting of the chassis.

[0041] Because the weight distribution of the chassis is often uneven during design, the related problems are not solved after the horizontal pressure plate 15 is fixed, which leads to a certain torque acting on the rack. Because the chassis needs to be kept horizontal during the test, when the chassis is light, the impact on the worm during the drip and flush tests is relatively small.

[0042] When conducting a water immersion test or when the weight of the chassis is heavy, the compliance of the worm will increase significantly. This patent also fully considers the impact of the uneven weight distribution of the chassis on the lifting rod during design, and designs a set of chassis horizontal adjustment devices, which are mainly composed of a horizontal motor 23, a change-of-direction pulley 10, and a fixed pulley 11 to pull the balance line. One end of the balance line is connected to the hook 18 of the platform plate, and the other end is connected to the shaft of the horizontal motor. The wire rope passes through the change-of-direction pulley 10, and the wire rope is tightened by the rotation of the horizontal motor, thereby keeping the chassis horizontal. The four horizontal motors 23 can work simultaneously or individually. When the device is working, it can not only ensure the levelness of the chassis fixing device, but also fully reduce the pressure on the lifting rod 21, especially during the immersion test. As the water depth increases, the pressure on the worm will increase significantly when the chassis is lifted. During the immersion test, the chassis can be pulled upward by the rotation of the horizontal motor 23, and the worm can be lowered and raised at the same time to achieve the overall translation of the chassis. The use of the leveling device will greatly increase the service life of the equipment.

Claims

1. An electronic equipment chassis water tightness test device, comprising a water tank, characterized in that: It also includes a lifting structure (5), the lifting structure (5) including a lifting rod (21) extending into the water tank, a driving motor (19) arranged on the water tank for driving the lifting rod (21) to move, and a platform (3) arranged at the bottom end of the lifting rod (21) for placing the chassis to be tested; The platform (3) is also connected to a plurality of hanging assemblies for maintaining the horizontality of the platform (3), each hanging assembly comprising a horizontal motor (23) arranged above the platform (3), a direction-changing pulley (10) arranged at the bottom of the water tank, and a fixed pulley (11) arranged at the upper edge of the water tank, the output head of each horizontal motor (23) is wound with a balance line, and the balance line passes through the direction-changing pulley (10) and the fixed pulley (11) in sequence, and is finally connected to a hook (18) arranged at the upper surface of the clamping platform (3); A transverse plate (2) is provided above the water tank, and the driving motor (19) and the horizontal motor (23) are both fixed on the transverse plate (2); The lifting rod (21) is a rack, and a gear box is provided at the output end of the driving motor (19), and the lifting rod (21) is meshed and matched with the gear box; The top of the water tank is provided with an embedding groove, and the two sides of the transverse plate (2) are engaged in the embedding groove via transverse sliding blocks (14); A spray unit (4) is also provided in the water tank, and the spray unit (4) comprises two vertical electric cylinders (24), a transverse slide rail provided on the telescopic ends of the two vertical electric cylinders (24), a horizontal electric cylinder provided on the transverse slide rail, and a horizontal slide block provided on the transverse slide rail and driven by the horizontal electric cylinder, the horizontal slide block being connected to a nozzle (27), and a water inlet end of the nozzle (27) being connected to a liquid delivery pump (7).

2. The water tightness test device for an electronic equipment chassis according to claim 1, characterized in that: The platform (3) comprises two horizontal pressing plates (15) arranged opposite to each other in an upper and lower direction, wherein the horizontal pressing plates (15) are provided with a plurality of radial waist holes, and bolts are inserted into the corresponding waist holes of the two horizontal pressing plates (15) for connection.

3. The water tightness test device for an electronic equipment chassis according to claim 1, characterized in that: A vertical slide rail (12) is also provided on the outside of the water tank, and a connecting arm is connected to the vertical slide rail (12) via a vertical sliding block, and the end of the connecting arm is connected to a camera (13).

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