Novel industrial controller experiment hanging box for teaching
By setting up a square threading tube and using a banana head socket in the experimental hanging box, the problem of confusing wires is solved, the safety and aesthetics are improved, and it is convenient for teaching and experiments to use.
Patent Information
- Application Number
- CN202422229186.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-09-11
AI Technical Summary
The wires of the existing industrial controller experimental hanger box are messy, resulting in low safety, high maintenance and poor aesthetics.
Two square threading tubes are set up in the experiment hanging box, located below the input and output signal jacks, respectively. The wires are electrically connected to the jacks through the wiring terminals and then passed through the threading tubes, distributed in an orderly manner, and a banana head jack and thick acrylic plate are designed for easy observation.
It realizes the orderly arrangement of wires, improves the safety and aesthetics of use, and is convenient for maintenance, suitable for teaching and experiments.
Smart Images
Figure CN223272790U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of industrial controller experiment boxes, and in particular relates to a novel industrial controller experiment hanging box for teaching. Background Art
[0002] An existing industrial controller experiment box for teaching includes an experiment box and an industrial control motherboard, wherein the industrial control motherboard is fixedly installed in the experiment box by screws. Figure 1 As shown, it includes an EMI filter circuit, an isolated power supply, a DCDC step-down circuit, an LDO step-down circuit, an optocoupler isolation input circuit, a relay output circuit, a transistor output circuit, a control circuit and an AD / DA isolation circuit. The control circuit is composed of a 3.3V voltage regulator circuit, a JATA interface circuit, a reference source circuit, a C8051F020 minimum system, a serial communication circuit, a GPIO interface circuit and an LCD interface circuit. After receiving the signal from the input circuit, the control circuit can perform logical judgment to control the output. The AD / DA isolation circuit includes an isolated power supply, a PAC circuit, an APC circuit and an optocoupler isolation circuit. The AD / DA isolation circuit can realize the isolated input and output of 0~10V or 4~20mA analog signals. The upper end surface of the panel is provided with an LCD display screen. The upper end surface of the panel in the experimental hanging box is provided with multiple input signal jacks, multiple output signal jacks, a rocker switch, a power input jack, an analog input and output jack and a transistor signal output jack. The input signal jack, output signal jack, power input jack, analog input and output jack, and transistor signal output jack are electrically connected to corresponding wiring terminals on the industrial control mainboard through wires. An existing industrial controller experimental hanging box for teaching can be used to collect sensor signals such as pressure, liquid level, and temperature, and control the variable frequency speed regulation of the motor through analog signals; it is suitable for use in teaching experiments; however, the existing industrial controller experimental hanging box for teaching has a large number of jacks (input signal jack, output signal jack, power input jack, analog input and output jack, and transistor signal output jack), and each jack is directly electrically connected to the corresponding wiring terminal through a wire. Due to the large number of wires and the lack of restraint, the multiple wires in the experimental hanging box are arranged in a relatively messy manner. The messy arrangement of the wires not only reduces the safety of the industrial controller experimental hanging box for teaching, but also increases the difficulty of maintenance of the industrial controller experimental hanging box for teaching, and also affects the aesthetics of the industrial controller experimental hanging box for teaching. Utility Model Content
[0003] Design purpose: In order to avoid the shortcomings of the background technology, a new type of industrial controller experimental hanging box for teaching is designed, which is not only well applicable, but also can arrange the wires in the experimental hanging box in an orderly manner, and can observe the internal situation of the experimental hanging box without opening the box. It is also suitable for use in teaching experiments.
[0004] Design plan: To achieve the above design objectives.
[0005] 1. Two square wire tubes are provided in the box body of the experimental hanging box, and the two square wire tubes are located on both sides of the industrial control mainboard, one of the square wire tubes is located directly below the multiple input signal jacks, and the other square wire tube is located directly below the multiple output signal jacks, and multiple wire entry holes are opened on the inner side of the square wire tube, and the wire entry holes are communicated with the central through hole of the square wire tube; one side of the industrial control mainboard is provided with multiple wiring terminals 1 and the other side of the industrial control mainboard is provided with multiple wiring terminals 2, the multiple input signal jacks are electrically connected to the corresponding wiring terminal 1 through a wire, and the wires connecting the corresponding input signal jacks and the wiring terminal 1 all pass through the square wire tubes directly below the multiple input signal jacks; the multiple output signal jacks are electrically connected to the corresponding wiring terminal 2 through a wire, and the wires connecting the corresponding output signal jacks and the wiring terminal 2 all pass through the square wire tubes directly below the multiple output signal jacks. This design is one of the technical features of the present invention. The purpose of such design is that: two square wire threading tubes are provided in the box body of the experimental hanging box and the two square wire threading tubes are located on both sides of the industrial control mainboard, one of the square wire threading tubes is located directly below the multiple input signal jacks, and the other square wire threading tube is located directly below the multiple output signal jacks, and multiple wire entry holes are opened on the inner side surface of the square wire threading tube, and the wire entry holes are communicated with the central through hole of the square wire threading tube; one side of the industrial control mainboard is provided with multiple wiring terminals 1 and the other side of the industrial control mainboard is provided with multiple wiring terminals 2, the multiple input signal jacks are electrically connected to the corresponding wiring terminal 1 through a wire respectively, and the wires connecting the corresponding input signal jacks and the wiring terminal 1 all pass through the square wire threading tubes directly below the multiple input signal jacks; the multiple output signal jacks are respectively provided with a plurality of wiring terminals 1 and 2. The electrical connection is achieved through a wire with the corresponding terminal two, and the wires connecting the corresponding output signal jacks and the terminal two all pass through the square wire threading tubes located directly below the multiple output signal jacks. A new type of industrial controller experimental hanging box for teaching can be used to collect sensor signals such as pressure, liquid level, and temperature, and to control the variable frequency speed regulation of the motor through analog signals, that is, it has good applicability for teaching; in addition, the setting of the two square wire threading tubes makes the wires in the experimental hanging box distributed in an orderly manner, which not only improves the safety of use of a new type of industrial controller experimental hanging box for teaching, but also makes it easier to repair a new type of industrial controller experimental hanging box for teaching, while also greatly improving the aesthetics of the new type of industrial controller experimental hanging box for teaching.
[0006] 2. A plurality of terminal blocks 3 are provided on one side of the industrial control mainboard, and terminal blocks 3 and terminal blocks 1 are located on the same side. A plurality of terminal blocks 4 are provided on the other side of the industrial control mainboard, and terminal blocks 4 and terminal blocks 2 are located on the same side. A plurality of power input jacks are electrically connected to the corresponding terminal blocks 3 through a wire, and the wires connecting the corresponding power input jacks and terminal blocks 3 all pass through the square wire conduit located directly below the plurality of input signal jacks; a plurality of analog input and output jacks are electrically connected to the corresponding terminal blocks 4 through a wire, and the wires connecting the corresponding analog input and output jacks and terminal blocks 4 all pass through the square wire conduit located directly below the plurality of output signal jacks; a plurality of transistor signal output jacks are electrically connected to the corresponding terminal blocks 4 through a wire, and the wires connecting the corresponding transistor signal output jacks and terminal blocks 4 all pass through the square wire conduit located directly below the plurality of output signal jacks. This design is the second technical feature of the present invention. The purpose of this design is that: one side of the industrial control mainboard is provided with multiple terminal threes, and terminal three and terminal one are located on the same side; the other side of the industrial control mainboard is provided with multiple terminal fours, and terminal four and terminal two are located on the same side; multiple power input jacks are electrically connected to the corresponding terminal three through a wire, and the wires connecting the corresponding power input jacks and terminal three all pass through the square wire tube located directly below the multiple input signal jacks; multiple analog input and output jacks are electrically connected to the corresponding terminal four through a wire, and the wires connecting the corresponding analog input and output jacks and terminal four all pass through the square wire tube located directly below the multiple output signal jacks; multiple transistor signal output jacks are electrically connected to the corresponding terminal four through a wire, and the wires connecting the corresponding transistor signal output jacks and terminal four all pass through the square wire tube located directly below the multiple output signal jacks, which further improves the orderliness of the distribution of each wire in the experimental hanging box.
[0007] 3. The design of the six side panels of the experimental hanging box being made of thick acrylic sheets is the third technical feature of this utility model. The purpose of this design is that the six side panels of the experimental hanging box are made of thick acrylic sheets, so that the user can observe the internal conditions of the experimental hanging box without opening the box.
[0008] 4. The input signal jack, output signal jack, power input jack, analog input / output jack, and transistor signal output jack are all banana plug jacks. The panel is provided with mounting holes for the banana plug jacks, and the mounting holes extend through the upper and lower ends of the panel. This is the fourth technical feature of the present invention. The purpose of this design is that the input signal jack, output signal jack, power input jack, analog input / output jack, and transistor signal output jack are all banana plug jacks. The panel is provided with mounting holes for the banana plug jacks, and the mounting holes extend through the upper and lower ends of the panel. The banana plug jacks are more convenient for students to use in experiments, that is, a new industrial controller experimental hanging box for teaching is more suitable for teaching experiments.
[0009] 5. A notch is provided on the lower wall of the square threading tube, the width of the notch matches the width of the square threading tube, and the length of the notch matches the length of the square threading tube. A lug plate is provided on the outer side of the square threading tube, and the length of the lug plate matches the length of the square threading tube. The lug plate is provided with multiple screw holes, and the screw holes pass through both sides of the lug plate. This design is the fifth technical feature of the present invention. The purpose of this design is that the notch is provided on the lower wall of the square threading tube, the width of the notch matches the width of the square threading tube, and the length of the notch matches the length of the square threading tube. A lug plate is provided on the outer side of the square threading tube, and the length of the lug plate matches the length of the square threading tube. The lug plate is provided with multiple screw holes, and the screw holes pass through both sides of the lug plate. Such a square threading tube structure facilitates the passage of wires, making it more convenient to arrange the wires in an orderly manner.
[0010] Technical solution: A new type of industrial controller experimental hanging box for teaching, including an experimental hanging box and an industrial control mainboard, the industrial control mainboard is fixedly installed in the experimental hanging box by screws, the industrial control mainboard includes an EMI filter circuit, an isolated power supply, a DCDC step-down circuit, an LDO step-down circuit, an optocoupler isolation input circuit, a relay output circuit, a transistor output circuit, a control circuit and an AD / DA isolation circuit, a plurality of input signal jacks are provided on the left side of the upper end face of the panel in the experimental hanging box, and a plurality of output signal jacks are provided on the right side of the upper end face of the panel, an LCD display is provided on the upper end face of the panel and the LCD display is located between the input signal jack and the output signal jack, a rocker switch, a power input jack, an analog input and output jack and a transistor signal output jack are provided on the front side of the upper end face of the panel, two square threading tubes are provided in the box body of the experimental hanging box and Two square wire tubes are located on both sides of the industrial control motherboard, one of the square wire tubes is located directly below the multiple input signal jacks, and the other square wire tube is located directly below the multiple output signal jacks. The inner side of the square wire tube is provided with multiple wire entry holes, and the wire entry holes are connected to the central through hole of the square wire tube; one side of the industrial control motherboard is provided with multiple wiring terminals 1 and the other side of the industrial control motherboard is provided with multiple wiring terminals 2. The multiple input signal jacks are electrically connected to the corresponding wiring terminals 1 through a wire respectively, and the wires connecting the corresponding input signal jacks and the wiring terminals 1 all pass through the square wire tubes located directly below the multiple input signal jacks; the multiple output signal jacks are electrically connected to the corresponding wiring terminals 2 through a wire respectively, and the wires connecting the corresponding output signal jacks and the wiring terminals 2 all pass through the square wire tubes located directly below the multiple output signal jacks.
[0011] Compared with the background technology, the present invention has the following advantages: firstly, the present invention is a new type of industrial controller experimental hanging box for teaching, which is not only good in applicability but also can arrange the wires in the experimental hanging box in an orderly manner; secondly, the present invention is a new type of industrial controller experimental hanging box for teaching, the internal situation of the experimental hanging box can be observed without opening the box, and it is beautiful to use and is suitable for teaching experiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of an industrial control motherboard.
[0013] Figure 2 The diagram is a structural diagram of a new type of industrial controller experiment hanging box used for teaching.
[0014] Figure 3 It is a schematic diagram of the structure of a square wire conduit viewed from above.
[0015] Figure 4 It is a side view structural diagram of a square wire conduit. DETAILED DESCRIPTION
[0016] Example 1: Refer to the attached Figure 2-Figure 4 . A new type of industrial controller experimental hanging box for teaching, including an experimental hanging box 1 and an industrial control mainboard 2, the industrial control mainboard 2 is fixedly installed in the experimental hanging box 1 by screws, the industrial control mainboard 2 includes an EMI filter circuit, an isolated power supply, a DCDC step-down circuit, an LDO step-down circuit, an optocoupler isolation input circuit, a relay output circuit, a transistor output circuit, a control circuit and an AD / DA isolation circuit, a plurality of input signal jacks 3 are provided on the left side of the upper end face of the panel 101 in the experimental hanging box 1 and a plurality of output signal jacks 4 are provided on the right side of the upper end face of the panel 101, an LCD display 8 is provided on the upper end face of the panel 101 and the LCD display 8 is located between the input signal jack 3 and the output signal jack 4, the LCD display 8 is a 12864 Chinese serial LCD, a rocker switch 9, a power input jack 10, an analog input and output jack 5 and a transistor signal output jack 6 are provided on the front side of the upper end face of the panel 101, and two square wire threading tubes are provided in the box body of the experimental hanging box 1. 11 and two square wire tubes 11 are located on both sides of the industrial control motherboard 2, one square wire tube 11 is located directly below the multiple input signal jacks 3, and the other square wire tube 11 is located directly below the multiple output signal jacks 4, and the inner side of the square wire tube 11 is provided with multiple wire entry holes 111, and the wire entry holes 111 are connected to the central through hole of the square wire tube 11; one side of the industrial control motherboard 2 is provided with multiple wiring terminals 12 and the other side of the industrial control motherboard 2 is provided with multiple wiring terminals 2 13, the multiple input signal jacks 3 are electrically connected to the corresponding wiring terminals 1 12 through a wire, and the wires connecting the corresponding input signal jacks 3 and the wiring terminals 1 12 all pass through the square wire tube 11 located directly below the multiple input signal jacks 3; the multiple output signal jacks 4 are electrically connected to the corresponding wiring terminals 2 13 through a wire, and the wires connecting the corresponding output signal jacks 4 and the wiring terminals 2 13 all pass through the square wire tube 11 located directly below the multiple output signal jacks 4.
[0017] One side of the industrial control mainboard 2 is provided with a plurality of terminal blocks 3 14, and the terminal blocks 3 14 and the terminal blocks 1 12 are located on the same side. The other side of the industrial control mainboard 2 is provided with a plurality of terminal blocks 4 15, and the terminal blocks 4 15 and the terminal blocks 2 13 are located on the same side. The plurality of power input jacks 10 are electrically connected to the corresponding terminal blocks 3 14 through a wire, and the wires connecting the corresponding power input jacks 10 and the terminal blocks 3 14 all pass through the square wire tube 11 located directly below the plurality of input signal jacks 3; the plurality of analog input and output jacks 5 are electrically connected to the corresponding terminal blocks 4 15 through a wire, and the wires connecting the corresponding analog input and output jacks 5 and the terminal blocks 4 15 all pass through the square wire tube 11 located directly below the plurality of output signal jacks 4; the plurality of transistor signal output jacks 6 are electrically connected to the corresponding terminal blocks 4 15 through a wire, and the wires connecting the corresponding transistor signal output jacks 6 and the terminal blocks 4 15 all pass through the square wire tube 11 located directly below the plurality of output signal jacks 6.
[0018] The rocker switch 9 can be turned on and off to control the power supply. The main control chip in the control circuit is C8051F020. Four LED lights 16 are provided on the upper end surface of the panel 101. The six side panels of the experimental hanging box 1 are all made of thick acrylic plates. The input signal jack 3, output signal jack 4, power input jack 10, analog input and output jack 5, and transistor signal output jack 6 are all banana plug jacks. The panel 101 is provided with mounting holes for the banana plug jacks, and the mounting holes pass through the upper and lower end surfaces of the panel 101.
[0019] A notch is provided on the lower wall of the square threading tube 11, the width of the notch matches the width of the square threading tube 11, and the length of the notch matches the length of the square threading tube 11. A lug plate 112 is provided on the outer side of the square threading tube 11, and the length of the lug plate 112 matches the length of the square threading tube 11. A plurality of screw through holes 113 are provided on the lug plate 112, and the screw through holes 113 pass through both sides of the lug plate 112.
[0020] The power supply is introduced through the power input jack 10 on the panel 101, and enters the EMI filter circuit after passing through the rocker switch 9 to filter out the common mode interference of the power supply. It is converted into an internal 24V power supply through the isolated power supply, which improves the power supply reliability of the power supply. After that, the system is powered by the DCDC step-down circuit and the LDO step-down circuit. The optocoupler isolation input circuit is connected to the input jack 3 on the panel 101, the relay output circuit is connected to the output jack 4 on the panel 101, and the AD / DA interface circuit is connected to the analog input and output jack 5 on the front A. The analog input and output jack 5 is Figure 3The AD / DA interface in the device is connected to the transistor signal output jack 6 on the panel 101. A novel industrial controller experiment box for teaching can be conveniently connected to teaching experimental equipment via banana plug-in cables. The transistor output circuit can output four high-speed pulses up to 50 kHz for controlling the operation of a stepper motor or servo motor. The control circuit and AD / DA isolation circuit are stacked and installed on the industrial control motherboard 2. The control circuit consists of a 3.3V voltage regulator circuit, a JATA interface circuit, a reference source circuit, a C8051F020 minimum system, a serial communication circuit, a GPIO interface circuit, and an LCD interface circuit. After receiving a signal from the input circuit, the control circuit can perform logical judgment to control the output. The AD / DA isolation circuit includes an isolated power supply, a PAC circuit, an APC circuit, and an optocoupler isolation circuit. The AD / DA isolation circuit can achieve isolated input and output of 0-10V or 4-20mA analog signals. A new type of industrial controller experimental hanging box for teaching can be used to collect sensor signals such as pressure, liquid level, and temperature, and control the variable frequency speed regulation of the motor through analog signals.
[0021] The main control chip is the C8051F020, a single-chip microcomputer with extensive GPIO pins, AD / DA, and communication capabilities, ideally suited to industrial control requirements. The control circuit supports 5-9V input voltage, powered by an onboard 3.3V voltage regulator. Connecting the module to a computer via a USB cable enables serial data communication. The reference circuit uses the low-temperature drift REF5025 as a 2.5V voltage reference.
[0022] The control circuit adopts a stacking mode of upper pin headers and lower female headers for combined installation and connection, so that when a new industrial controller experimental hanging box for teaching is used in experimental teaching, when students' misoperation causes damage to the circuit, the stacking mode connection is adopted, and the circuit module can be easily replaced. It is particularly suitable for use in teaching experiments.
[0023] The AD / DA isolation circuit adopts an analog signal to PWM signal conversion, namely an APC circuit. The PWM signal passes through an optocoupler isolation circuit and then converts the PWM into an analog signal and a PAC circuit, thereby achieving signal isolation. Although the circuit is relatively complex, it has a high cost performance and meets the requirements of industrial signals.
[0024] Because 24V DC signals are commonly used in industrial settings, a new industrial controller experiment box designed for teaching applications supports a 20-30V DC input voltage. This voltage is introduced through a rubber-tipped jack on panel 101, passed through a rocker switch 9, and then sent to the isolated power supply on the interface expansion board. After isolation, the generated 24V DC voltage is reduced to 5V by a DC-DC step-down circuit to power the chip, and then to 12V by an LDO step-down circuit to power the AD / DA isolation circuit. The optocoupler isolation input circuit uses a TL290 optocoupler to isolate the 24V input signal before sending it to the control circuit. The relay output circuit utilizes a relay module, which can control both AC and DC loads. The transistor output circuit also features an optocoupler isolation circuit and MOSFET field-effect transistors on the interface board to better achieve high-speed pulse output.
[0025] A new type of industrial controller experiment hanging box for teaching is connected to existing teaching experimental equipment using a conventional 4mm banana head safety plug cable.
[0026] It should be understood that although the above embodiments provide a relatively detailed textual description of the design ideas of the present invention, these textual descriptions are merely simple textual descriptions of the design ideas of the present invention, rather than limitations on the design ideas of the present invention. Any combination, addition or modification that does not exceed the design ideas of the present invention shall fall within the scope of protection of the present invention.
Claims
1. A novel industrial controller experimental hanging box for teaching, comprising an experimental hanging box (1) and an industrial control mainboard (2), wherein the industrial control mainboard (2) is fixedly mounted in the experimental hanging box (1) by screws, wherein the industrial control mainboard (2) comprises an EMI filter circuit, an isolated power supply, a DCDC step-down circuit, an LDO step-down circuit, an optical coupler isolation input circuit, a relay output circuit, a transistor output circuit, a control circuit and an AD / DA isolation circuit, wherein a plurality of input signal jacks (3) are provided on the left side of the upper end face of the panel (101) in the experimental hanging box (1) and a plurality of output signal jacks (4) are provided on the right side of the upper end face of the panel (101), an LCD display screen (8) is provided on the upper end face of the panel (101) and the LCD display screen (8) is located between the input signal jacks (3) and the output signal jacks (4), and a rocker switch (9), a power input jack (10), an analog input and output jack (5) and a transistor signal output jack (6) are provided on the front side of the upper end face of the panel (101), wherein the invention is characterized in that: Two square threading tubes (11) are provided in the box body of the experimental hanging box (1) and the two square threading tubes (11) are located on both sides of the industrial control mainboard (2), one of the square threading tubes (11) is located directly below the plurality of input signal jacks (3), and the other square threading tube (11) is located directly below the plurality of output signal jacks (4), and a plurality of wire entry holes (111) are opened on the inner side surface of the square threading tube (11) and the wire entry holes (111) are communicated with the central through hole of the square threading tube (11); a plurality of connection terminals (12) are provided on one side of the industrial control mainboard (2) and the other side of the industrial control mainboard (2) is provided with a plurality of connection terminals (12). A plurality of wiring terminals (13) are provided on one side, and the plurality of input signal jacks (3) are electrically connected to the corresponding wiring terminals (12) through a wire, and the wires connecting the corresponding input signal jacks (3) and the wiring terminals (12) all pass through a square wire tube (11) located directly below the plurality of input signal jacks (3); the plurality of output signal jacks (4) are electrically connected to the corresponding wiring terminals (13) through a wire, and the wires connecting the corresponding output signal jacks (4) and the wiring terminals (13) all pass through a square wire tube (11) located directly below the plurality of output signal jacks (4).
2. The novel industrial controller experimental hanging box for teaching according to claim 1 is characterized by: One side of the industrial control mainboard (2) is provided with a plurality of wiring terminals three (14), and the wiring terminals three (14) and the wiring terminals one (12) are located on the same side. The other side of the industrial control mainboard (2) is provided with a plurality of wiring terminals four (15), and the wiring terminals four (15) and the wiring terminals two (13) are located on the same side. The plurality of power input jacks (10) are electrically connected to the corresponding wiring terminals three (14) through a wire, and the wires connecting the corresponding power input jacks (10) and the wiring terminals three (14) all pass through the square wire conduit (11) located directly below the plurality of input signal jacks (3). ); Multiple analog input and output jacks (5) are electrically connected to corresponding wiring terminals four (15) through a wire, and the wires connecting the corresponding analog input and output jacks (5) and wiring terminals four (15) all pass through the square threading tube (11) located directly below the multiple output signal jacks (4); Multiple transistor signal output jacks (6) are electrically connected to corresponding wiring terminals four (15) through a wire, and the wires connecting the corresponding transistor signal output jacks (6) and wiring terminals four (15) all pass through the square threading tube (11) located directly below the multiple output signal jacks (4).
3. A novel industrial controller experimental hanging box for teaching according to claim 1 or 2, characterized in that: The opening and closing of the rocker switch (9) can control the on and off of the power supply.
4. The novel industrial controller experimental hanging box for teaching according to claim 1 is characterized by: The main control chip in the control circuit is C8051F020.
5. The novel industrial controller experimental hanging box for teaching according to claim 1 is characterized by: Four LED lights (16) are provided on the upper end surface of the panel (101).
6. The novel industrial controller experimental hanging box for teaching according to claim 1 is characterized by: The six side panels of the experimental hanging box (1) are all made of thick acrylic panels.
7. The novel industrial controller experimental hanging box for teaching according to claim 1 is characterized by: The input signal jack (3), the output signal jack (4), the power input jack (10), the analog input and output jack (5) and the transistor signal output jack (6) are all banana head jacks. The panel (101) is provided with mounting holes for mounting the banana head jacks, and the mounting holes penetrate the upper and lower end surfaces of the panel (101).
8. The novel industrial controller experimental hanging box for teaching according to claim 1 is characterized by: A notch (7) is provided on the lower wall of the square threading tube (11), the width of the notch matches the width of the square threading tube (11), and the length of the notch matches the length of the square threading tube (11). A lug plate (112) is provided on the outer side of the square threading tube (11), and the length of the lug plate (112) matches the length of the square threading tube (11). A plurality of screw through holes (113) are provided on the lug plate (112), and the screw through holes (113) pass through both sides of the lug plate (112).