Water tank test device

Abstract

The present invention discloses a water tank testing device, which relates to the field of mechanical testing equipment. The water tank testing device includes: a mounting seat, a swinging member, a cutoff member, and a driving mechanism. One end of the swinging member is rotatably connected to the mounting seat and can swing around the swinging member's rotation axis. The swinging member extends in a direction perpendicular to the rotation axis and is provided with a water channel extending along the swinging member. The cutoff member is movable along the swinging member and is used to cut off and connect the water channel. The driving mechanism is used to drive the swinging member to swing and drive the cutoff member to move. The water tank testing device according to an embodiment of the present invention can test the structural strength of a water tank and its impact resistance when pressure changes, thereby achieving a test of the reliability and fatigue of the water tank structure.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical testing equipment, in particular to a water tank testing device. Background Art

[0002] In related technologies, the vehicles produced need to undergo long-term actual vehicle road tests to verify the reliability of the water tank structure. However, this method not only consumes a lot of time, manpower and fuel costs, but also prolongs the product development cycle. Summary of the Invention

[0003] The present invention aims to at least partially address one of the technical problems in the related art. To this end, one object of the present invention is to provide a water tank testing device that can test the structural strength and impact resistance of a water tank under pressure changes, thereby enabling testing of the structural reliability and fatigue resistance of the water tank.

[0004] According to an embodiment of the present invention, a water tank testing device includes: a mounting seat, a swinging member, a cutoff member and a driving mechanism. One end of the swinging member is rotatably connected to the mounting seat and can swing around the rotating axis of the swinging member. The swinging member extends in a direction perpendicular to the rotating axis. The swinging member is provided with a water channel extending along the swinging member; the cutoff member is movable along the swinging member and is used to cut off and connect the water channel; the driving mechanism is used to drive the swinging member to swing and drive the cutoff member to move.

[0005] According to the water tank testing device of the embodiment of the present invention, the structural strength of the water tank and the impact resistance of the water tank when the pressure changes can be tested, thereby realizing the test of the reliability and fatigue of the water tank structure, which is conducive to reducing the testing cost and improving the efficiency and scientificity of the test.

[0006] In addition, the water tank testing device according to the above embodiment of the present invention may also have the following additional technical features:

[0007] In some examples of the present invention, the swinging member includes a swinging arm, the water channel is connected to the swinging arm and extends along the swinging arm, the rotating shaft is arranged at the end of the swinging arm, the driving mechanism includes a first driving member, and the rotating shaft is transmission-connected to the first driving member.

[0008] In some examples of the present invention, the first driving member includes a first motor and a driving gear. The first motor is disposed on the mounting seat. The first motor is in transmission connection with the driving gear to drive the driving gear to rotate.

[0009] In some examples of the present invention, the swing arm is provided with a scale, and the scale is opposite to the water channel.

[0010] In some examples of the present invention, the rotating shaft is connected to the axis of the driving gear.

[0011] In some examples of the present invention, the driving gear is provided with a scale.

[0012] In some examples of the present invention, the first motor includes a driving gear, the driving gear is engaged with the driving gear, and a diameter of the driving gear is smaller than a diameter of the driving gear.

[0013] In some examples of the present invention, the swing member includes a screw rod, the cut-off member is movably provided on the screw rod, the screw rod extends along the waterway, and the driving mechanism includes a second driving member, which drives the screw rod to rotate.

[0014] In some examples of the present invention, the second driving member includes a second motor and a coupling, and the coupling detachably connects the second motor and the lead screw.

[0015] In some examples of the present invention, the screw rod is provided with a scale.

[0016] In some examples of the present invention, the swing member includes a support frame extending along the swing member and fixedly connected to opposite ends of the swing member, and the water channel and at least a portion of the cut-off member are connected to the support frame.

[0017] In some examples of the present invention, the swing member includes a swing arm and a screw rod, one side of the water channel is connected to the swing arm, and the other side is spaced apart from the screw rod, and the support frame is fixedly connected to the swing arm and the screw rod.

[0018] In some examples of the present invention, the support frame includes a first connecting rod, a second connecting rod and an extension rod, the first connecting rod and the second connecting rod are connected to opposite ends of the extension rod and extend in a direction perpendicular to the extension rod, the first connecting rod connects the screw rod and the rotating shaft of the swing arm, and the second connecting rod connects the other end of the screw rod, the other end of the swing arm and the waterway.

[0019] In some examples of the present invention, the swing arm and the support frame are constructed in a rectangular structure.

[0020] In some examples of the present invention, the screw rod and the support frame are constructed in a rectangular structure.

[0021] In some examples of the present invention, the cutoff member is movably connected to the extension rod.

[0022] In some examples of the present invention, the driving mechanism includes a second motor, which is provided on the mounting base. The maximum vertical distance between the second motor and the mounting base is W, the distance between the rotating axis of the swing arm and the mounting base is L1, and the distance between the rotating axis of the swing arm and the first connecting rod is L2, satisfying that L2≤L1-W.

[0023] In some examples of the present invention, the water tank testing device further includes a water inlet pipe connected to the mounting seat and communicating with the water channel.

[0024] In some examples of the present invention, the shut-off member is provided with a first control valve, and the first control valve cuts off and connects the water channel.

[0025] In some examples of the present invention, at least a portion of the water channel is a hose.

[0026] In some examples of the present invention, the vertical height between the rotating shaft and the mounting base is h BV The vertical height between the rotating shaft and the cut-off piece is h cv , the pressure inside the water tank satisfies, P=ρg(h BV +h CV ).

[0027] In some examples of the present invention, the water tank testing device also includes a pressure sensor, which is located at the bottom of the water tank. The water inlet pipe is provided with a second control valve. The pressure sensor transmits signals to the second control valve to control the opening and closing of the second control valve when the pressure reaches a predetermined value. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of a water tank testing device in some embodiments of the present invention;

[0029] Figure 2 is a schematic structural diagram of a water tank testing device in some embodiments of the present invention (showing a swinging state);

[0030] Figure 3 is a schematic structural diagram of a transport vehicle in some embodiments of the present invention;

[0031] Figure 4 is a schematic structural diagram of a transport vehicle in some embodiments of the present invention;

[0032] Figure 5 is a block diagram of a water tank testing device in some embodiments of the present invention.

[0033] Reference numerals:

[0034] 1000, transport vehicle; 100, water tank testing device; 10, mounting base; 20, swinging member; 210, rotating shaft; 21, swing arm; 22, water channel; 23, screw rod; 30, shut-off member; 31, first control valve; 41, first driving member; 411, first motor; 412, driving gear; 42, second driving member; 422, second motor; 421, coupling; 50, support frame; 51, first connecting rod; 52, second connecting rod; 53, extension rod; 60, water inlet pipe; 70, pressure sensor; 200, water tank; 300, vehicle body. DETAILED DESCRIPTION

[0035] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0036] Water tanks are generally used to transport liquids, that is, water tanks are placed on transport vehicles. In actual use, transport vehicles may encounter braking, bumps or sharp turns during driving. When the water tank is fully loaded, it is easy to suffer structural damage under the action of these three extreme load conditions, or fatigue damage may occur after a long time, resulting in leakage of the transported liquid, increasing transportation risks and causing economic losses. Therefore, in order to improve the reliability and fatigue resistance of the water tank during use, the present invention provides a water tank testing device 100, which can perform reliability and fatigue tests on the water tank before leaving the factory. In the related art, the produced vehicles need to undergo long-term actual vehicle road test experiments to verify the reliability of the water tank structure, but this method not only consumes a lot of time, manpower and fuel costs, but also leads to a longer product development cycle.

[0037] Therefore, the present invention provides a water tank testing device 100. Using a water tank testing device 200 to test the structure of a water tank 200 can reduce testing costs and shorten testing cycles. Furthermore, the water tank testing device 100 provides higher accuracy for testing the structure of a water tank 200. Compared to related testing methods, it is more effective and scientific, providing a theoretical basis for product research and development.

[0038] Combine Figures 1 to 2According to an embodiment of the present invention, a water tank testing device 100 includes: a mounting base 10, a swinging member 20, a shutoff member 30, and a driving mechanism. One end of the swinging member 20 is rotatably connected to the mounting base 10 and can swing around a rotating shaft 210 of the swinging member 20. The swinging member 20 extends in a direction perpendicular to the rotating shaft 210. The swinging member 20 is provided with a water channel 22 extending along the swinging member 20; the shutoff member 30 is movable along the swinging member 20 and is used to cut off and connect the water channel 22; the driving mechanism is used to drive the swinging member 20 to swing and drive the shutoff member 30 to move.

[0039] Specifically, when the water tank testing device 100 is in use, the mounting base 10 is mounted on the upper side of the water tank 200, and the water channel 22 of the water tank testing device 100 can be connected or disconnected from the water tank 200. The water channel 22 contains a predetermined amount of water, and the water tank 200 is filled with water. When the water channel 22 is connected to the water tank 200, the water in the water channel 22 can increase the pressure in the water tank 200. This allows testing the ability of the water tank 200 to withstand water pressure, particularly its structural stability in the face of impact forces. As the oscillating member 20 swings, the pressure exerted on the water tank 200 by the water in the water channel 22 continuously changes. This allows testing the structural stability of the water tank 200 under varying pressures, thereby testing the fatigue performance of the water tank 200. Therefore, the water tank testing device 100 of the present invention can test the reliability and fatigue performance of the water tank 200.

[0040] The water tank testing device 100 according to the embodiment of the present invention can test the structural strength of the water tank 200 and the impact resistance of the water tank 200 when the pressure changes, thereby realizing the testing of the structural reliability and fatigue of the water tank 200.

[0041] Specifically, the basic physical principle underlying the water pitcher 200 device of the present invention is consistent with Pascal's famous experiment in 1648: he used a sealed bucket filled with water, inserted a thin tube into the lid, and poured water into the tube from a balcony. The result was that the bucket was fractured with just one cup of water. The primary reason for the fracture was that the tube had a relatively small capacity, filling it with just one cup of water. However, the tube was deep, resulting in a high water pressure within the bucket, causing the bucket to fracture.

[0042] The basic formula for the pressure inside a bucket is:

[0043] P=ρgh

[0044] P——pressure (unit: Pa);

[0045] ρ——density of the liquid in the bucket; (unit: kg / m 3 );

[0046] g – acceleration due to gravity is generally 9.8N / kg;

[0047] h – the height difference between the water surface and the bottom (unit: m).

[0048] Therefore, based on the relationship between liquid pressure and liquid depth, it can be seen that as the depth increases, the pressure at the bottom of the water tank 200 increases. Liquid (usually water) is used to fill a closed container. When pressure is applied to a part of the container, the pressure is evenly transmitted to every part of the liquid. Therefore, it can be used to observe how the pressure is evenly distributed on the container wall, and can be used to test the pressure resistance of the water tank 200. In conjunction with the water tank testing device 100 of the embodiment of the present invention, the water channel 22 is provided on the water tank 200, and the water channel 22 is filled with water of a predetermined height. The swing member 20 is located at a position perpendicular to the water tank 200 or the horizontal plane, see Figure 1 When the water channel 22 is connected to the water tank 200, the height of the liquid in the water channel 22 is h CV +h BV When the water channel 22 is connected, the liquid in the water channel 22 can communicate with the water tank 200, increasing the pressure in the water tank 200 and achieving impact pressure loading, which can simulate the working conditions of the water tank 200 when it is bumpy. When the swing member 20 swings around the rotation axis 210, the water channel 22 is connected to the water tank 200, and the water channel 22 swings with the swing member 20. When the water channel 22 swings, the height of the liquid in the water channel 22 will continuously change with the swing angle, which can simulate the working conditions of the water tank 200 when it is transported, such as sharp turns or braking. Figure 2 .

[0049] For example, a square clean water tank measuring 1000mm long, 1800mm wide, and 1250mm high is used as an example. Finite element simulation analysis is performed on three operating conditions. The water level parameters are then adjusted to produce equivalent stress values ​​equivalent to the three aforementioned operating conditions. Finally, the equivalent stress state for the tank, when the water level is 1.8 times the tank height, is found to be over 90% similar to the equivalent stresses of the three extreme loads. This means that the three extreme road load conditions can be simulated by raising the liquid level to 1.8 times the original height on a stationary tank. This allows the design of a device that can be installed on the top of the tank, connected to the water inside, and capable of rapidly changing the liquid level to quickly load and adjust the tank's load. During testing, the water level in the waterway 22 of the water tank testing device 100 can be determined. This water level is the height of the waterway 22 when it is in a vertical position, i.e., perpendicular to the horizontal plane.

[0050] Combine Figure 1In some embodiments of the present invention, the swing member 20 includes a swing arm 21, a water channel 22 is connected to the swing arm 21 and extends along the swing arm 21, a rotating shaft 210 is disposed at the end of the swing arm 21, and a driving mechanism includes a first driving member 41, with the rotating shaft 210 being in driving connection with the first driving member 41. Thus, the first driving member 41 can drive the swing arm 21 to swing, and when the swing arm 21 swings, it can drive the water channel 22 connected thereto to swing synchronously, thereby adjusting the position of the water channel 22. Specifically, when the swing arm 21 drives the water channel 22 to swing, the angle between the swing arm 21 and the horizontal plane changes, and the height of the horizontal plane in the water channel 22 relative to the horizontal plane where the rotating shaft 210 is located also changes, thereby changing the liquid level in the water channel 22.

[0051] More specifically, combined with Figure 2 After swing arm 21 swings, the angle between swing arm 21 and the horizontal plane of rotation axis 210 is α. At this point, the height of the liquid level in water channel 22 relative to the horizontal plane of rotation axis 210 is h1. If the length of water channel 22 is L4, then h1 = L4 * sin(α). In other words, as swing arm 21 swings, the angle constantly changes, and the corresponding height h1 of the horizontal plane of water channel 22 also constantly changes. This continuous back-and-forth swinging action can alter the water pressure at the bottom of water tank 200. Therefore, by adjusting the water level height when water channel 22 is vertical, the maximum amplitude of the sinusoidal loading waveform can be adjusted.

[0052] Combine Figure 1 The vertical height between the rotating shaft 210 and the mounting seat 10 is h BV The vertical height between the rotating shaft 210 and the cut-off member 30 is h CV , the pressure inside the water tank 200 satisfies, P=ρg(h BV +h CV ), thereby, the pressure in the water tank 200 can be calculated, which is conducive to improving the accuracy and scientificity of the test. Specifically, since the swing member 20 can swing around the rotation axis 210, h CV The value of can change with the swing of the swing member 20, for example Figure 1 h in CV and Figure 2 h1 in the figure, when the swing member 20 is in a vertical state, the position of the cut-off member 30 on the water channel 22 can be adjusted. The cut-off member 30 cuts off the water channel 22 at different positions, which determines the h1 when the water channel 22 is connected to the water tank 200. CV When the swing member 20 swings, the cut-off member 30 cuts off the water channel 22 at different positions, which determines the length L4 of the water channel 22. Therefore, h can be calculated by the angle between the swing arm 21 and the horizontal plane. CV The numerical value of .

[0053] Furthermore, in some embodiments of the present invention, the first driving member 41 includes a first motor 411 and a driving gear 412. The first motor 411 is provided on the mounting base 10. The first motor 411 is connected to the driving gear 412 in a transmission manner to drive the driving gear 412 to rotate. The first motor 411 and the driving gear 412 are driven, and the motion trajectory of the swing arm 21 is the same as that of the driving gear 412, which can improve the accuracy and stability of the drive. In addition, the cooperation between the first motor 411 and the driving gear 412 has high transmission efficiency and can reduce energy loss. Since the swing arm 21 needs to drive the waterway 22 to swing synchronously when it swings, the water in the waterway 22 has a certain weight. Therefore, the gear-cooperated driving method can improve the smoothness of the operation during the drive and help improve the load-bearing capacity, thereby achieving the stability of the drive and maintaining the stability of the waterway 22 during the swinging process, which is conducive to improving the test effect.

[0054] Specifically, the first motor 411 may be a motor with gears, used to drive the driving gear 412 with a scale. The first motor 411 may be a servo motor, so that the rotation angle can be controlled in real time.

[0055] For example, combined with Figure 1 and Figure 3 The first motor 411 includes a driving gear, which is engaged with the driving gear 412 to improve the driving stability. The diameter of the driving gear 412 can be larger than the diameter of the gear of the first motor 411, and the transmission ratio can be adjusted, thereby facilitating the adjustment of the output speed and torque.

[0056] Furthermore, in some embodiments of the present invention, the driving gear 412 is provided with a scale, which can facilitate observation or control of the swing amplitude of the swing arm 21, thereby improving the accuracy of the test.

[0057] Combine Figure 1 In some embodiments of the present invention, the shaft 210 is connected to the axis of the drive gear 412, which effectively transmits power, reduces energy loss, and ensures rotational efficiency and accuracy. The direct connection between the shaft 210 and the axis of the drive gear 412 also reduces vibration and offset caused by an indirect connection, thereby improving the durability and wear resistance of the gears and the shaft 210.

[0058] Optionally, in some embodiments of the present invention, the swing arm 21 is provided with a scale, which is opposite to the waterway 22, thereby facilitating the observation or control of the height of the water surface in the waterway 22, and also facilitating the observation or control of the cut-off position of the cut-off piece 30 on the waterway 22.

[0059] Combine Figure 1In some embodiments of the present invention, the swing member 20 includes a screw rod 23, and the cut-off member 30 is movably mounted on the screw rod 23. The screw rod 23 extends along the waterway 22. The drive mechanism includes a second drive member 42, which drives the screw rod 23 to rotate. When the second drive member 42 drives the screw rod 23 to rotate, the screw rod 23 can convert the rotational motion into the up and down movement of the cut-off member 30 on the screw rod 23, so that the cut-off member 30 can cut off the waterway 22 at different positions. The structure is simple and easy to construct.

[0060] Combine Figure 3 In some embodiments of the present invention, the second driving member 42 includes a second motor 422 and a coupling 421. The coupling 421 detachably connects the second motor 422 to the screw 23, improving operational flexibility and enhancing the compactness of the water tank testing device 100. Specifically, when the coupling 421 is installed between the second motor 422 and the screw 23, it functions as a transmission mechanism. When the swing member 20 swings, the coupling 421 can be removed, allowing the screw 23 to swing in accordance with the water channel 22 and the swing arm 21.

[0061] In some embodiments of the present invention, the screw rod 23 is provided with a scale. The scale on the screw rod 23 can facilitate observation of the position of the cut-off member 30 and control of the moving position of the cut-off member 30, thereby improving the control accuracy.

[0062] Optionally, at least one of the swing arm 21 and the screw rod 23 is provided with a scale, which can facilitate observation and adjustment of the water level in the water channel 22 and the cut-off position of the cut-off member 30 .

[0063] Optionally, the second motor 422 may be a stepping motor or a servo motor, which may improve the control accuracy, thereby improving the accuracy of position adjustment of the cut-off member 30 .

[0064] Combine Figure 1 and Figure 2 In some embodiments of the present invention, to improve the structural stability of the water tank testing device 100, the swinging member 20 includes a support frame 50. The support frame 50 extends along the swinging member 20 and is fixedly connected to opposite ends of the swinging member 20. The water channel 22 and at least a portion of the shut-off member 30 are connected to the support frame 50. Specifically, due to the long extension length of the swinging member 20, the support frame 50 can improve the structural stability of the swinging member 20. Specifically, the support frame 50 can be connected to the swing arm 21 and the water channel 22 to improve structural stability.

[0065] Combine Figure 1In some embodiments of the present invention, one side of the water channel 22 is connected to the swing arm 21, facilitating the synchronous swinging of the water channel 22 and the swing arm 21. The other side of the water channel 22 is spaced apart from the screw rod 23, which reserves space for the shutoff member 30, facilitating the shutoff member 30 to cut off and connect the water channel 22. The support frame 50 is fixedly connected to the swing arm 21 and the screw rod 23, thereby improving the overall structural stability of the swing member 20. It should be noted that the opposite sides of the water channel 22 can be the left and right sides, and the opposite ends of the water channel 22 can be the upper and lower ends.

[0066] Combine Figure 1 In some embodiments of the present invention, the support frame 50 includes a first connecting rod 51, a second connecting rod 52 and an extension rod 53. The first connecting rod 51 and the second connecting rod 52 are connected to the opposite ends of the extension rod 53 and extend in a direction perpendicular to the extension rod 53. The first connecting rod 51 connects the screw rod 23 and the rotating shaft 210 of the swing arm 21, and the second connecting rod 52 connects the other end of the screw rod 23, the other end of the swing arm 21 and the waterway 22.

[0067] Specifically, the swing arm 21, the water channel 22 and the screw rod 23 all extend in the length direction. In order to improve the supporting effect and structural stability, the support frame 50 is provided with a first connecting rod 51 and a second connecting rod 52 extending in the width direction. The first connecting rod 51 connects the lower ends of the swing arm 21 and the screw rod 23 in the width direction, and the second connecting rod 52 connects the upper ends of the swing arm 21, the screw rod 23 and the water channel 22 in the width direction. Therefore, the support frame 50 can not only connect the various components but also provide support at the ends of the components. The swing arm 21 and the support frame 50 are constructed in a rectangular structure, and the screw rod 23 and the support frame 50 are also constructed in a rectangular structure, so the overall structural stability of the swing member 20 can be improved. Among them, the width direction can refer to Figure 1 The left and right directions in the middle, the long direction can be Figure 1 The up and down directions in .

[0068] Optionally, in some embodiments of the present invention, the cutoff piece 30 is movably connected to the extension rod 53 , that is, the cutoff piece 30 can be connected to the screw rod 23 and the extension rod 53 at the same time, which can improve the structural stability of the cutoff piece 30 .

[0069] More specifically, combined Figure 2The second motor 422 is disposed on the mounting base 10. The maximum vertical distance between the second motor 422 and the mounting base 10 is W. The distance between the rotating shaft 210 of the swing arm 21 and the mounting base 10 is L1. The distance between the rotating shaft 210 of the swing arm 21 and the first connecting rod 51 is L2, satisfying the following: L2 ≤ L1 - W. Since the second motor 422 needs to be connected to the screw rod 23, the second motor 422 needs to be disposed near the swing member 20. However, when the swing member 20 swings, it may interfere with the second motor 422. Therefore, the width distance of the swing member 20 needs to be reasonably arranged so that when the swing member 20 is in the swinging state, the swing member 20 or the first connecting rod 51 of the support frame 50 will not interfere with the second motor 422.

[0070] Combine Figure 1 and Figure 3 In some embodiments of the present invention, the water tank testing device 100 further includes a water inlet pipe 60, which is connected to the mounting base 10 and communicates with the waterway 22. During testing, water can be injected into the waterway 22 through the water inlet pipe 60. Specifically, one end of the water inlet pipe 60 communicates with the waterway 22, and the other end is connected to a water pump, which can supply water to the waterway 22 and adjust the water level of the waterway 22.

[0071] In some embodiments of the present invention, Figure 1 The shut-off piece 30 is provided with a first control valve 31, which cuts off and connects the water channel 22. Specifically, when the shut-off piece 30 moves to a predetermined position, the water channel 22 can be squeezed by the first control valve 31 to cut off the water channel 22, or the first control valve 31 can release the water channel 22 to connect the water channel 22.

[0072] Optionally, in some embodiments of the present invention, at least a portion of the water channel 22 is a flexible hose, thereby facilitating the first control valve 31 to cut off the water channel 22. Specifically, the first control valve 31 may be an electric pressure head. When in use, when the pressure head of the electric pressure head is extended, it can flatten the flexible hose of the water channel 22, thereby dividing the water in the water channel 22 into two.

[0073] Combine Figure 3 and Figure 4In some embodiments of the present invention, the water tank testing device 100 further includes a pressure sensor 70, which is located at the bottom of the water tank 200 and is used to test the pressure at the bottom of the water tank 200. The water inlet pipe 60 is provided with a second control valve (not shown in the figure). The pressure sensor 70 transmits signals to the second control valve and is used to control the opening and closing of the second control valve when the pressure reaches a predetermined value. Specifically, the pressure sensor 70 can be used to measure the pressure at the bottom of the test water tank 200. By observing the pressure in the water tank 200, the operator can achieve load control. When the pressure is abnormal, the operator can be prompted, such as by issuing an alarm message. When the pressure reaches a predetermined value, the second control valve can be automatically controlled to open so that the water in the water tank 200 can be discharged from the water inlet pipe 60, thereby avoiding misoperation that causes excessive pressure in the water tank 200 and improving the operational safety and reliability of the water tank testing device 100.

[0074] A water tank testing device 100 and a transport vehicle 1000 according to a specific embodiment of the present invention will be described below with reference to the accompanying drawings.

[0075] Combine Figures 1 to 4 The transport vehicle 1000 includes a vehicle body 300 and a water tank 200. The water tank 200 is mounted on the vehicle body 300, and the water tank testing device 100 is mounted on the upper portion or top of the water tank 200. Specifically, during the test, the water tank 200 needs to be filled with water. The water tank 200 has a manhole cover. The mounting base 10 of the water tank testing device 100 can be a manhole cover mounting base 10. The water tank testing device 100 is mounted on the manhole cover of the water tank 200 and is sealed to the water tank 200, for example, by providing a sealing ring between the manhole cover and the mounting base 10.

[0076] Furthermore, the water inlet pipe 60 is used to pump water into the water channel 22 and fill the water channel 22 with specific water. Even if the water level in the water channel 22 reaches the height required for the test, the water inlet pipe 60 is sealed by the second control valve to maintain this state.

[0077] At this time, the water tank testing device 100 can select two load modes for testing:

[0078] The first type: Sine (cosine) loading mode: Remove the coupling 421, cut off the connection between the screw rod 23 and the second motor 422, and then control the rotation of the second motor 422 and the first motor 411 to achieve the swing of the top of the device, and the water channel 22 will also swing accordingly. Figure 2 As shown, the water level in water channel 22 and the water in water tank 200 will change. This continuous back-and-forth swinging can achieve changes in the bottom water pressure. Adjusting the water level when water channel 22 is vertical can adjust the maximum amplitude of the sinusoidal loading waveform.

[0079] The second type: impact loading method: such as Figure 1In the state shown, the first driving member 41 is locked, the first motor 411 is controlled to lock, and the entire device is kept in a vertical position. The coupling 421 is installed and connected to the screw 23 and the second motor 422. The shutoff member 30 is adjusted to the test height by controlling the second motor 422. The first control valve 31 is then controlled, such as an electric pressure head, to squeeze the water channel 22, disconnecting or connecting the water in the water channel 22, thereby quickly changing the water level in the water channel 22. This process is repeated to achieve impact loading. The shutoff member 30 moves up and down, shutting off the water channel 22, and can change the water level in the water channel 22, thereby adjusting the magnitude of the impact on the water tank 200.

[0080] In addition, when the pressure sensor 70 detects that the water pressure is too high, it can control the second control valve to open, thereby connecting the water inlet pipe 60, so that the water in the waterway 22 and the water inlet pipe 60 automatically flows out, thereby playing a protective role.

[0081] Therefore, this experiment utilizes the principle that the water pressure load is independent of the mass of water and is only related to the horizontal plane height. Then, through finite element simulation analysis technology, the liquid level height of the test equivalent load of bumping, turning and braking equivalent load is found (the equivalent test height of water tanks with different structures is different). Then, the water tank testing device 100 is used to perform loading and cyclic load tests to achieve reliability and fatigue testing of the water tank 200.

[0082] Furthermore, the logic for completing the above functional control function input and output and control unit is as follows:

[0083] Combine Figure 5 The water tank testing device 100 includes a monitoring unit, a control unit and an execution unit. The monitoring unit includes a pressure sensor 70, a first motor 411 sensor, a second motor 422 sensor and a first control valve 31 counting sensor. The control unit includes a host computer data acquisition and data processor module and a logic controller. The execution unit includes the first motor 411, the second motor 422, the first control valve 31, the second control valve and a test data output and counter.

[0084] The value of the monitoring unit can be output to the control unit. Specifically, the output of the monitoring unit serves as the input of the control unit, and the execution unit performs the corresponding task based on the output of the control unit. For example, the numerical output value of pressure sensor 70 is controlled by the control unit. The control unit determines whether the value of pressure sensor 70 reaches a predetermined value. If so, it controls the execution unit to open the second control valve.

[0085] In the description of the present invention, it should be understood that the terms "length", "width", "thickness", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0086] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0087] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0088] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0089] In the description of this specification, reference to the terms "one embodiment", "some embodiments", "embodiments", "specific embodiments", or "some embodiments" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or embodiments are included in at least one embodiment or embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or embodiments. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or embodiments in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or embodiments described in this specification and features of different embodiments or embodiments without contradiction.

[0090] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary only and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A water tank testing device (100), characterized in that: include: Mounting seat (10); A swinging member (20), one end of which is rotatably connected to the mounting seat (10) and is capable of swinging around a rotation axis (210) of the swinging member (20), the swinging member (20) extending in a direction perpendicular to the rotation axis (210), and the swinging member (20) is provided with a water channel (22) extending along the swinging member (20); the water channel (22) is connected to a water tank (200), and the water tank (200) is provided on the body of the transport vehicle (1000); a cut-off member (30), the cut-off member (30) being movable along the swing member (20), and the cut-off member (30) being used to cut off and connect the water channel (22); a driving mechanism, the driving mechanism being used to drive the swinging member (20) to swing and drive the cut-off member (30) to move; a water inlet pipe (60), the water inlet pipe (60) being connected to the mounting seat (10) and communicating with the waterway (22); Wherein, the vertical height between the rotating shaft (210) and the mounting seat (10) is h BV The vertical height between the rotating shaft (210) and the cut-off member (30) is h CV , the pressure inside the water tank (200) satisfies, P=ρg(h BV +h CV ).

2. The water tank testing device (100) according to claim 1, characterized in that: The swing member (20) includes a swing arm (21), the water channel (22) is connected to the swing arm (21) and extends along the swing arm (21), The driving mechanism comprises a first driving member (41), and the rotating shaft (210) is in transmission connection with the first driving member (41).

3. The water tank testing device (100) according to claim 2, characterized in that: The first driving member (41) comprises a first motor (411) and a driving gear (412), wherein the first motor (411) is disposed on the mounting seat (10), and the first motor (411) is in transmission connection with the driving gear (412) to drive the driving gear (412) to rotate; and / or The swing arm (21) is provided with a scale, and the scale is opposite to the water channel (22).

4. The water tank testing device (100) according to claim 3, characterized in that: The rotating shaft (210) is connected to the axis of the driving gear (412); and / or The driving gear (412) is provided with a scale; and / or The first motor (411) comprises a driving gear, the driving gear meshing with the driving gear (412), and the diameter of the driving gear is smaller than the diameter of the driving gear (412).

5. The water tank testing device (100) according to claim 1, characterized in that: The swing member (20) includes a screw rod (23), the cut-off member (30) is movably arranged on the screw rod (23), the screw rod (23) extends along the waterway (22), and the driving mechanism includes a second driving member (42), and the second driving member (42) drives the screw rod (23) to rotate.

6. The water tank testing device (100) according to claim 5, characterized in that: The second driving member (42) includes a second motor (422) and a coupling (421), wherein the coupling (421) detachably connects the second motor (422) and the screw rod (23); and / or the screw rod (23) is provided with a scale.

7. The water tank testing device (100) according to claim 1, characterized in that: The swing member (20) includes a support frame (50) extending along the swing member (20) and fixedly connected to opposite ends of the swing member (20), and at least a portion of the water channel (22) and the cut-off member (30) are connected to the support frame (50).

8. The water tank testing device (100) according to claim 7, characterized in that: The swing member (20) comprises a swing arm (21) and a screw rod (23); one side of the water channel (22) is connected to the swing arm (21), and the other side is spaced apart from the screw rod (23); and the support frame (50) is fixedly connected to the swing arm (21) and the screw rod (23).

9. The water tank testing device (100) according to claim 8, characterized in that: The support frame (50) comprises a first connecting rod (51), a second connecting rod (52) and an extension rod (53), wherein the first connecting rod (51) and the second connecting rod (52) are connected to opposite ends of the extension rod (53) and extend in a direction perpendicular to the extension rod (53), the first connecting rod (51) connects the screw rod (23) and the rotating shaft (210) of the swing arm (21), and the second connecting rod (52) connects the other end of the screw rod (23), the other end of the swing arm (21) and the waterway (22); and / or The swing arm (21) and the support frame (50) are constructed in a rectangular structure; and / or The screw rod (23) and the support frame (50) are constructed in a rectangular structure.

10. The water tank testing device (100) according to claim 9, characterized in that: The cut-off member (30) is movably connected to the extension rod (53); and / or The driving mechanism includes a second motor (422), the second motor (422) is provided on the mounting seat (10), the maximum vertical distance between the second motor (422) and the mounting seat (10) is W, the distance between the rotating shaft (210) of the swing arm (21) and the mounting seat (10) is L1, and the distance between the rotating shaft (210) of the swing arm (21) and the first connecting rod (51) is L2, satisfying L2≤L1-W.

11. The water tank testing device (100) according to any one of claims 1 to 10, characterized in that: The shutoff member (30) is provided with a first control valve (31), and the first control valve (31) cuts off and connects the water channel (22); and / or At least a portion of the water channel (22) is a hose.

12. The water tank testing device (100) according to claim 11, characterized in that: The device further comprises a pressure sensor (70), the pressure sensor (70) being arranged at the bottom of the water tank (200), the water inlet pipe (60) being provided with a second control valve, the pressure sensor (70) transmitting signals to the second control valve for controlling the opening and closing of the second control valve when the pressure reaches a predetermined value.

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