Multifunctional simulation test machine suitable for cabinet connection test

Abstract

The invention relates to the technical field of testing machines, and discloses a multifunctional simulation testing machine suitable for cabinet connection testing, which comprises a machine body, a cabinet cavity with an opening at the rear end is arranged in the machine body, a plurality of wiring terminals are arranged in the cabinet cavity, and each wiring terminal is provided with an input end and an output end connected with a cabinet; the operation panel is provided with a plurality of control switches for outputting digital control signals or analog control signals, the control switches are electrically connected with the input end, and the digital control signals or the analog control signals sent by the control switches are transmitted to the cabinet machine through the wiring terminal; the design that the control switch can output a digital control signal or an analog control signal breaks through the limitation of single function of traditional test equipment, can meet the diversified requirements of different models and different functions of cabinet machines for test signals, enables one piece of equipment to complete various test tasks, greatly widens the application scene of the equipment, and improves the test efficiency. The equipment purchase cost of an enterprise is reduced; the problem that a testing device is single in function is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of testing machines, in particular to a multifunctional simulation testing machine suitable for cabinet machine connection testing. BACKGROUND

[0002] At present, when PLC cabinets on the market are tested, the signals of valves, flow meters, temperature sensors, pressure transmitters and the like need to be detected, and the testing is usually performed by finding actual devices or single products. This testing method has many disadvantages. Since it involves frequent wiring and finding substitutes, the testing work is extremely tedious, resulting in low work efficiency. Moreover, using a large number of actual devices or single products for testing will result in high testing costs, which is not conducive to controlling production costs.

[0003] Therefore, there is an urgent need for a testing device that can integrate multiple signals, simplify the testing process and reduce costs. SUMMARY

[0004] The present application aims to provide a multifunctional simulation testing machine suitable for cabinet machine connection testing, which aims to solve the problem of single function of the testing device in the prior art.

[0005] The multifunctional simulation testing machine suitable for cabinet machine connection testing is implemented as follows: a machine body is provided, the machine body has a cabinet cavity with a rear end opening, a plurality of wiring terminals are arranged in the cabinet cavity, the wiring terminals have input ends and output ends connected to cabinet machines; A middle part of the machine body is provided with a middle part table arranged forwardly and protruding, the middle part table is arranged at the front end of the machine body; an upper part of the machine body is provided with an operation panel arranged obliquely, the operation panel is formed at the front end of the machine body; The operation panel is provided with a plurality of control switches for outputting digital control signals or analog control signals, the control switches are electrically connected to the input ends, and the digital control signals or analog control signals emitted by the control switches are transmitted to the cabinet machines through the wiring terminals; A cover door for opening or closing the rear end opening is arranged on the rear end opening, the cover door is provided with a plurality of rear end air holes for air cooling, a bottom plate is arranged at the bottom of the machine body, the bottom plate is provided with a plurality of bottom air holes for air cooling, and the rear end air holes and the bottom air holes are respectively communicated with the cabinet cavity.

[0006] Further, the control switches include toggle switches for outputting digital control signals.

[0007] Further, the control switch comprises a twist switch outputting an analog control signal, the cabinet cavity is provided with an analog signal generator, and the twist switch is electrically connected with the analog signal generator.

[0008] Further, the plurality of wiring terminals are arranged in an array to form a terminal row arranged in a strip shape.

[0009] Further, the operation panel is provided with a digital display meter displaying the size of the analog control signal, and the digital display meter is electrically connected with the twist switch.

[0010] Further, the cover door has an outer end face facing away from the cabinet cavity, and the rear end air hole penetrates through the outer end face; the outer end face is provided with a curved cylinder arranged in a downward bending manner, the curved cylinder has a curved cavity, and the curved cavity penetrates through the end of the curved cylinder along the bending direction of the curved cylinder. The upper end of the curved cylinder is connected to the outer end face and surrounds the outer periphery of the rear end air hole, the lower end of the curved cylinder is bent downward to form a lower air outlet arranged downward, and the lower air outlet is in communication with the rear end air hole.

[0011] Further, the rear end air hole is in a flat shape, the curved cavity is in a flat shape, the inner side wall of the curved cavity is provided with a plurality of metal springs made of metal material, the metal springs are arranged in an upward inclined manner along the direction from bottom to top of the curved cavity, and the plurality of metal springs are arranged in a spaced manner along the circumferential direction of the curved cavity. The outer end of the metal spring is fixedly connected to the inner side wall of the curved cavity, the inner end of the metal spring is arranged in an inclined extension manner towards the middle part of the curved cavity, and the inner ends of the plurality of metal springs are arranged in a spaced manner.

[0012] Further, a plurality of spring through holes are arranged in the metal spring, and the spring through holes penetrate through the metal spring in the up-down direction.

[0013] Further, the upper plate is provided above the bottom plate, the upper plate and the bottom plate have an air permeable interval therebetween, the air permeable interval is located below the cabinet cavity, and the upper plate is provided with a plurality of upper air holes. The air permeable interval is provided with a plurality of air guide cylinders, the air guide cylinders have air guide cavities, the upper ends of the air guide cylinders are connected to the upper plate, the upper ends of the air guide cavities are in communication with the upper air holes, the lower ends of the air guide cylinders are connected to the bottom plate, the lower ends of the air guide cavities are in communication with the bottom air holes, and the air guide cylinders are arranged in a plurality of curved manners along the height direction of the air guide cylinders.

[0014] Further, the outer periphery of the air guide cylinder is provided with a plurality of outer peripheral holes, and the air guide cavities are in communication with the air permeable interval through the plurality of outer peripheral holes.

[0015] Compared with the prior art, the multifunctional simulation test machine suitable for cabinet machine connection test provided by the application realizes multiple technical breakthroughs through the optimized design of the overall structure, the cabinet cavity in the machine body provides an independent and stable installation environment for the wiring terminal, avoids the interference of the external environment on the signal transmission component, and ensures the stability of signal transmission. The middle table can be used for placing some test-related tools, accessories or temporary recording materials, etc., so that the operator can take them at any time during the test process, improving the operation convenience and optimizing the test process. The operation panel is inclined and arranged at the front end of the machine body and inclined from bottom to top, which conforms to the ergonomic design principle; such inclination angle can make the operator more comfortable when operating the control switch, and reduce the fatigue caused by long-time operation; at the same time, the control switch is exposed on the operation panel, which is convenient for the operator to quickly identify and operate, greatly improving the operation convenience and thus improving the test efficiency. The design that the control switch can output digital control signals or analog control signals breaks the limitation of single function of traditional test equipment, can meet the diversified demand of test signals of different models and different functions of cabinet machines, so that one equipment can complete multiple test tasks, greatly widens the application scenarios of the equipment, and reduces the equipment procurement cost of enterprises; solve the problem that the test device has a single function. The closing of the closing door behind the opening in the non-connection state can effectively block the erosion of external dust, moisture and the like to the internal components of the cabinet cavity, prolonging the service life of the equipment; and the three-dimensional heat dissipation network formed by the rear air hole and the bottom air hole can quickly guide the heat generated by the internal components of the cabinet cavity during operation to the outside, avoiding the performance degradation or damage of the components caused by the local high temperature, and ensuring the stable operation of the equipment in long-time high-intensity test. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective view of the machine body provided by the application; Figure 2 is a side view of the machine body provided by the application; Figure 3 is a schematic view of the arrangement structure of the wiring terminal and the analog signal generator provided by the application; Figure 4 is a rear view of the machine body provided by the application; Figure 5 is a local enlarged structure schematic view of the closing door and the curved cylinder provided by the application; Figure 6 is a local cutaway enlarged structure schematic view of the machine body provided by the application.

[0017] In the figure: the body 10, the middle table 20, the operation panel 30, the cover door 40, the bottom plate 50, the upper plate 60, the air gap 70, the cabinet cavity 11, the terminal 12, the analog signal generator 13, the control switch 31, the digital display 32, the rear air hole 41, the outer end surface 42, the curved cylinder 43, the curved cavity 44, the lower air outlet 45, the metal spring 46, the spring through hole 47, the bottom air hole 51, the upper air hole 61, the air guide cylinder 71, the air guide cavity 72, and the outer peripheral hole 73. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0019] The implementation of the present application is described in detail below in combination with specific examples.

[0020] In the drawings of the present embodiment, the same or similar reference numerals correspond to the same or similar parts; in the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present application, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0021] Reference Figures 1-6 The preferred embodiment provided by the present application is shown.

[0022] The multifunctional simulation test machine suitable for cabinet machine connection test comprises a body 10, the body 10 has a cabinet cavity 11 with a rear opening, a plurality of terminals 12 are arranged in the cabinet cavity 11, the terminals 12 have input ends and output ends connected with the cabinet machine; A middle table 20 is arranged in the middle of the body 10 and protrudes forward, the middle table 20 is arranged at the front end of the body 10; the upper part of the body 10 has an operation panel 30 arranged obliquely, the operation panel 30 is formed at the front end of the body 10; The operation panel 30 is provided with a plurality of control switches 31 for outputting digital control signals or analog control signals, the control switches 31 are electrically connected with the input ends, the digital control signals or analog control signals emitted by the control switches 31 are transmitted to the cabinet machine through the terminals 12; The rear end opening is provided with a cover door 40 for opening or closing the rear end opening, the cover door 40 is provided with a plurality of rear end air holes 41 for air ventilation and heat dissipation, the bottom of the machine body 10 is provided with a bottom plate 50, the bottom plate 50 is provided with a plurality of bottom air holes 51 for air ventilation and heat dissipation, and the rear end air holes 41 and the bottom air holes 51 are respectively communicated with the cabinet cavity 11.

[0023] The multifunctional simulation test machine provided above is suitable for cabinet machine connection test, and multiple technical breakthroughs are realized through the optimized design of the overall structure. The cabinet cavity 11 in the machine body 10 provides an independent and stable installation environment for the wiring terminal 12, avoids the interference of the external environment on the signal transmission component, and ensures the stability of signal transmission. The middle table 20 can be used to place some test-related tools, accessories or temporary records, etc., so that the operator can take them at any time during the test process, improving the operation convenience and optimizing the test process. The operation panel 30 is inclined and arranged at the front end of the machine body 10 and inclined from bottom to top, which conforms to the ergonomic design principle. This inclination angle can make the operator more comfortable when operating the control switch 31, reducing the fatigue caused by long-time operation. At the same time, the control switch 31 is exposed on the operation panel 30, which is convenient for the operator to quickly identify and operate, greatly improving the operation convenience and thus improving the test efficiency. The control switch 31 can output digital control signals or analog control signals, breaking the limitation of single function of traditional test equipment, meeting the diversified demand of test signals of different models and different functions of cabinet machines, enabling one device to complete multiple test tasks, greatly expanding the application scenarios of the device and reducing the equipment procurement cost of enterprises; and solving the problem of single function of the test device. The cover door 40 closes the rear end opening in the non-connection state, which can effectively prevent the erosion of dust, moisture and the like in the external environment to the internal components of the cabinet cavity 11, prolonging the service life of the device. The three-dimensional heat dissipation network formed by the rear end air holes 41 and the bottom air holes 51 can quickly conduct the heat generated by the internal components of the cabinet cavity 11 during operation, avoiding the performance degradation or damage of the components caused by the local high temperature, and ensuring the stable operation of the device during long-time high-intensity test.

[0024] In this embodiment, the control switch 31 includes a toggle switch outputting digital control signals. In this way, the toggle switch can output stable digital control signals, and the digital signals have the characteristics of strong anti-interference ability, fast transmission speed and clear logic.

[0025] In this embodiment, the control switch 31 includes a twist switch outputting analog control signals, and the cabinet cavity 11 is provided with an analog signal generator 13, the twist switch is electrically connected with the analog signal generator 13, and the twist switch controls the change of the analog control signals emitted by the analog signal generator 13 through twisting.

[0026] The twist switch cooperates with the analog signal generator 13 to output a continuously variable analog control signal, such as a change in voltage, current, and other physical quantities; this enables the testing device to simulate various analog signal environments that the cabinet machine may encounter in actual operation, such as changes in the output signals of temperature, pressure, and other analog quantity sensors, thereby meeting the testing requirements for the analog input function of the cabinet machine and expanding the application range of the testing device.

[0027] The operator can conveniently adjust the size of the analog signal by twisting the switch, which is simple and intuitive to operate, thereby improving the flexibility of analog signal testing.

[0028] In this embodiment, the plurality of wiring terminals 12 are arranged in a row, forming a terminal row arranged in a strip shape; in this way, the numerous wiring terminals 12 can be arranged in order, avoiding messy entanglement of the lines.

[0029] During the wiring process, the operator can quickly identify and distinguish different wiring terminals 12, reducing the possibility of wiring errors and improving the wiring efficiency; at the same time, the neat terminal row also facilitates later inspection, maintenance, and modification of the lines, reducing the difficulty of line management.

[0030] In this embodiment, the operation panel 30 is provided with a digital display meter 32 for displaying the size of the analog control signal, and the digital display meter 32 is electrically connected to the twist switch.

[0031] The digital display meter 32 is electrically connected to the twist switch and can display the specific value of the analog control signal in real time and accurately, providing an intuitive reference for the operator; the operator can accurately adjust the twist switch according to the reading of the digital display meter 32 to make the analog control signal reach the required accurate value, thereby improving the accuracy and controllability of analog signal testing.

[0032] In this embodiment, the cover door 40 has an outer end surface 42 facing away from the cabinet cavity 11, and the rear end vent hole 41 penetrates the outer end surface 42; the outer end surface 42 is provided with a curved cylinder 43 arranged downwardly curved, and the curved cylinder 43 has a curved cavity 44, which penetrates the end of the curved cylinder 43 along the curved direction of the curved cylinder 43; The upper end of the curved cylinder 43 is connected to the outer end surface 42 and surrounds the outer periphery of the rear end vent hole 41, and the lower end of the curved strip is curved downward to form a lower air outlet 45 arranged downward, which is in communication with the rear end vent hole 41.

[0033] The downward-curved cylinder 43 on the outer end face 42 of the cover door 40 is arranged around the rear vent 41, forming a downward-facing air outlet 45 at the lower end. This structural design achieves a perfect balance between heat dissipation and protection. The downward-curved shape of the cylinder 43 effectively blocks external dust, rainwater and other debris from directly entering the rear vent 41 using the principle of gravity. At the same time, its bending path can change the airflow direction, reducing the possibility of impurities carried by external airflow entering the cabinet cavity 11, thus playing a good role in dust and water protection. The connection structure between the curved cavity 44 and the rear vent 41 and the air outlet 45 ensures that the hot airflow in the cabinet cavity 11 can smoothly enter the curved cavity 44 through the rear vent 41 and then be discharged through the air outlet 45, without the presence of the protective structure hindering heat dissipation.

[0034] In addition, the curved cylinder 43 can also buffer the airflow exchange inside and outside the cabinet cavity 11, reduce the interference of strong external airflow on the stable airflow field inside the cabinet cavity 11, make the heat dissipation process more stable, and ensure the stable working environment of the internal components of the cabinet cavity 11.

[0035] In this embodiment, the rear vent 41 is flat and the bending cavity 44 is flat. The inner wall of the bending cavity 44 is provided with a plurality of metal springs 46 made of metal material. Along the bending cavity 44 from bottom to top, the metal springs 46 are arranged inclined upwards, and the plurality of metal springs 46 are arranged around the bending cavity 44 at intervals in the circumference. The outer end of the metal spring 46 is fixedly connected to the inner wall of the bending cavity 44, and the inner end of the metal spring 46 extends obliquely toward the middle of the bending cavity 44, with the inner ends of multiple metal springs 46 arranged at intervals.

[0036] The flat structure increases the cross-sectional area of ​​the vent holes and the bending cavity 44, increasing the flow of heat dissipation air and improving heat dissipation efficiency. The metal springs 46 are made of metal with excellent thermal conductivity, which can quickly absorb the heat in the bending cavity 44 and dissipate it to the outside, enhancing the heat dissipation effect. The upward tilting arrangement can effectively block falling dust and debris from entering the bending cavity 44 without affecting the upward flow of hot air. It plays a secondary protection role. Multiple metal springs 46 are arranged circumferentially at intervals. The gaps formed between their inward tilting inner ends ensure smooth airflow and can also intercept larger debris.

[0037] In addition, when airflow passes through, the metal spring 46 will vibrate slightly, which can shake off the dust attached to its surface, prevent dust from accumulating and clogging the bending cavity 44, and ensure the long-term unobstructed heat dissipation channel.

[0038] In this embodiment, the metal spring 46 is provided with multiple spring through holes 47, which pass through the metal spring 46 from top to bottom; this detailed design further improves the performance of the metal spring 46.

[0039] The through hole 47 increases the contact area between the metal spring 46 and the airflow, improving the heat dissipation efficiency of the metal spring 46 and allowing the heat in the bending cavity 44 to be dissipated more quickly through the metal spring 46. At the same time, the through hole 47 provides more flow paths for the airflow, avoiding excessive obstruction of the airflow by the metal spring 46, ensuring the flow of air in the bending cavity 44, and ensuring the efficient realization of the heat dissipation function.

[0040] In addition, the through-hole structure can reduce the weight of the metal spring 46, making it easier to vibrate under the action of airflow, enhancing the effect of shaking off dust, and further ensuring the smooth flow of the bending cavity 44.

[0041] In this embodiment, an upper plate 60 is provided above the bottom plate 50, and there is a ventilation gap 70 between the upper plate 60 and the bottom plate 50. The ventilation gap 70 is located below the cabinet cavity 11, and the upper plate 60 is provided with a plurality of upper ventilation holes 61. The ventilation interval 70 is provided with multiple air guide tubes 71, each with an air guide cavity 72. The upper end of the air guide tube 71 is connected to the upper plate 60, and the upper end of the air guide cavity 72 is connected to the upper ventilation hole 61. The lower end of the air guide tube 71 is connected to the bottom plate 50, and the lower end of the air guide cavity 72 is connected to the bottom ventilation hole 51. Along the height direction of the air guide tube 71, the air guide tube 71 is arranged in multiple curved sections.

[0042] An upper plate 60 is set above the bottom plate 50 to form a ventilation gap 70. A multi-section curved air guide tube 71 connects the upper ventilation hole 61 and the bottom ventilation hole 51. This bottom heat dissipation structure design demonstrates excellent heat dissipation and dust prevention capabilities. The ventilation gap 70 between the upper plate 60 and the bottom plate 50 provides space for heat buffering and distribution, allowing the heat in the cabinet cavity 11 to enter the ventilation gap 70 evenly through the upper ventilation hole 61.

[0043] The multi-section curved air duct 71 extends the heat dissipation path and increases the contact time between the hot airflow and the wall of the air duct 71, allowing the heat to be dissipated more fully to the outside and improving the heat dissipation efficiency. The curved structure of the air duct 71 can effectively block external dust from entering the cabinet cavity 11 through the bottom vent 51. The "maze effect" formed by the curved path can intercept most of the dust, playing a reliable dustproof role.

[0044] The complete heat dissipation channel, consisting of the upper vent 61, the air guide tube 71, and the bottom vent 51, ensures that the heat generated by the components below the cabinet cavity 11 can be dissipated in a timely manner, thus preventing the bottom components from affecting the overall performance of the equipment due to poor heat dissipation.

[0045] In this embodiment, the outer periphery of the air guide cylinder 71 is provided with multiple peripheral holes 73, and the air guide cavity 72 is connected to the air venting interval 70 through the multiple peripheral holes 73; this design further optimizes the performance of the bottom heat dissipation system.

[0046] The outer peripheral hole 73 adds an additional airflow exchange channel between the air guide cavity 72 and the venting interval 70. When the airflow in the air guide cavity 72 is obstructed due to dust accumulation or other reasons, the airflow can be diverted and supplemented between the air guide cylinder 71 and the venting interval 70 through the outer peripheral hole 73, ensuring the total amount of heat dissipation airflow and maintaining the stability of heat dissipation efficiency. At the same time, the outer peripheral hole 73 can balance the air pressure inside and outside the air guide cylinder 71, avoiding the airflow stagnation caused by excessive air pressure difference inside and outside the air guide cavity 72, making the heat dissipation process smoother.

[0047] In addition, the presence of the outer peripheral hole 73 increases the heat exchange area between the air guide tube 71 and the air vent 70, which helps to further improve the heat dissipation effect and ensure that the bottom of the equipment is always at a suitable working temperature.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-functional simulation test machine suitable for cabinet connection testing, characterized in that, Includes a body, the body having a cabinet cavity with a rear opening, the cabinet cavity being provided with multiple wiring terminals, the wiring terminals having an input end and an output end connected to the cabinet unit; The machine body has a central platform that protrudes forward in the middle, and the central platform is located at the front end of the machine body; the upper part of the machine body has an inclined operation panel, and the operation panel is formed at the front end of the machine body. The operation panel is equipped with multiple control switches that output digital or analog control signals. The control switches are electrically connected to the input terminals. The digital or analog control signals emitted by the control switches are transmitted to the cabinet unit through the wiring terminals. The rear opening is provided with a cover door for opening or closing the rear opening. The cover door has multiple rear ventilation holes for ventilation and heat dissipation. The bottom of the body has a bottom plate with multiple bottom ventilation holes for ventilation and heat dissipation. The rear ventilation holes and bottom ventilation holes are respectively connected to the cabinet cavity.

2. The multi-functional simulation testing machine for cabinet connection testing as described in claim 1, characterized in that, The control switch includes a toggle switch that outputs digital control signals.

3. The multi-functional simulation testing machine suitable for cabinet connection testing as described in claim 1, characterized in that, The control switch includes a toggle switch that outputs an analog control signal. An analog signal generator is provided in the cabinet cavity. The toggle switch is electrically connected to the analog signal generator. By toggling, the toggle switch controls the change of the analog control signal emitted by the analog signal generator.

4. The multi-functional simulation testing machine suitable for cabinet connection testing as described in claim 1, characterized in that, The multiple terminals are arranged in a row to form a terminal block arranged in a strip.

5. The multi-functional simulation testing machine suitable for cabinet connection testing as described in claim 3, characterized in that, The operation panel is equipped with a digital display that shows the magnitude of the analog control signal, and the digital display is electrically connected to the toggle switch.

6. The multifunctional simulation testing machine for cabinet connection testing as described in any one of claims 1 to 5, characterized in that, The cover door has an outer end face facing away from the cabinet cavity, and the rear ventilation hole penetrates through the outer end face; a downwardly curved cylinder is provided on the outer end face, and the curved strip has a curved cavity, which penetrates through the end of the curved cylinder along the bending direction of the curved cylinder. The upper end of the curved cylinder is connected to the outer end face and surrounds the outer periphery of the rear vent hole. The lower end of the curved strip is bent downward to form a downwardly arranged lower air port, which is connected to the rear vent hole.

7. The multi-functional simulation testing machine for cabinet connection testing as described in claim 6, characterized in that, The rear vent is flat, the bending cavity is flat, and the inner wall of the bending cavity is provided with a plurality of metal springs made of metal material. Along the bending cavity from bottom to top, the metal springs are arranged at an upward angle, and the plurality of metal springs are arranged around the bending cavity at intervals in the circumference. The outer end of the metal spring is fixedly connected to the inner wall of the bending cavity, and the inner end of the metal spring extends obliquely toward the center of the bending cavity, with the inner ends of multiple metal springs spaced apart.

8. The multi-functional simulation testing machine for cabinet connection testing as described in claim 7, characterized in that, The metal spring has multiple spring through holes, which extend through the metal spring from top to bottom.

9. The multifunctional simulation testing machine for cabinet connection testing as described in any one of claims 1 to 5, characterized in that, Above the bottom plate is an upper plate, and there is a ventilation gap between the upper plate and the bottom plate. The ventilation gap is located below the cabinet cavity, and the upper plate has multiple upper ventilation holes. The ventilation interval is provided with multiple air guide tubes, each air guide tube having an air guide cavity. The upper end of the air guide tube is connected to the upper plate, and the upper end of the air guide cavity is connected to the upper ventilation hole. The lower end of the air guide tube is connected to the bottom plate, and the lower end of the air guide cavity is connected to the bottom ventilation hole. Along the height direction of the air guide tube, the air guide tube is arranged in multiple curved sections.

10. The multifunctional simulation testing machine for cabinet connection testing as described in claim 9, characterized in that, The outer periphery of the air guide tube is provided with multiple peripheral holes, and the air guide cavity is connected to the air-permeable interval through the multiple peripheral holes.

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