Safety sensing control teaching experiment table

Abstract

The utility model discloses a safety sensing control teaching experiment table, which relates to the technical field of teaching experiment tables and comprises a supporting platform, and an operation execution unit, an automatic control unit, a safety detection unit and an alarm unit are respectively arranged on the supporting platform. The safety detection unit comprises a safety switch sensor and a safety switch actuator, the safety switch sensor is fixedly installed on the supporting platform, the safety switch sensor and the safety switch actuator attract each other, and an adjusting assembly used for adjusting the distance between the safety switch actuator and the safety switch sensor is arranged on the supporting platform; the operation execution unit and the alarm unit are controlled by the automatic control unit; when the safety switch actuator and the safety switch sensor are not attracted, the automatic control unit controls the alarm unit to send out alarm information and controls the operation execution unit to stop running, and the safety switch control teaching device has the advantages that an actual execution mechanism is matched with safety sensing to control teaching, and the teaching effect can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of teaching experiment platforms, in particular to a safety sensor control teaching experiment platform. Background Art

[0002] At present, with the continuous progress and development of electronic control technology, the requirements for the automation of the system are getting higher and higher. As a commonly used sensor in the electronic control system, the research and teaching of safety sensors are very common.

[0003] In the existing safety sensor testing teaching experiments, the models of safety sensors are single, and the experiments often only collect data. There is no actual actuator to cooperate with it to achieve process control and simulate the actual process flow. Students cannot intuitively understand the actual application of safety sensors in industry, which affects the teaching effect. Utility Model Content

[0004] The utility model provides a safety sensor control teaching experiment platform, which adopts an actual actuator to cooperate with the safety sensor control teaching, and is helpful to improve the teaching effect.

[0005] The utility model specifically adopts the following technical solutions:

[0006] A safety sensor control teaching experiment platform, comprising a support platform, on which a job execution unit, an automatic control unit, a safety detection unit and an alarm unit are respectively arranged;

[0007] The safety detection unit includes a safety switch sensor and a safety switch actuator, wherein the safety switch sensor is fixedly mounted on the support platform, the safety switch sensor and the safety switch actuator are attracted to each other, and an adjustment component for adjusting the distance between the safety switch actuator and the safety switch sensor is provided on the support platform;

[0008] The operation execution unit and the alarm unit are controlled by an automatic control unit;

[0009] When the safety switch actuator and the safety switch sensor are not attracted, the automatic control unit controls the alarm unit to send out an alarm message, and controls the operation execution unit to stop running.

[0010] Optionally, the adjustment assembly includes a mounting seat, an adjustment cross column, an adjustment sleeve and a clamp, the mounting seat is fixedly mounted on the support platform, the safety switch sensor is fixed to the mounting seat by mounting bolts, the adjustment cross column is fixed to the mounting seat, the adjustment sleeve is slidably connected to the adjustment cross column, the clamp is connected to the adjustment sleeve, and the clamp is used to clamp and fix the safety switch actuator.

[0011] Optionally, the alarm unit includes a buzzer, which is fixedly mounted on the supporting platform. When the safety switch actuator is not attracted by the safety switch sensor, the buzzer emits an alarm sound.

[0012] Optionally, the safety detection unit also includes a safety laser scanner, which is fixedly mounted on a support platform. When an obstacle is detected within the detection range of the safety laser scanner, the automatic control unit controls the alarm unit to issue an alarm message and controls the operating unit to stop running.

[0013] Optionally, the alarm unit further includes an alarm light, which is mounted on the supporting platform. When the safety laser scanner detects an obstacle, the alarm light emits an alarm light.

[0014] Optionally, the operation execution unit includes fan blades and a motor, the fan blades are rotatably arranged on a support platform, the body of the motor is arranged inside the support platform, the drive shaft of the motor is connected to the fan blades through a coupling, and the side wall of the support platform is provided with a rotating hole for the coupling to pass through.

[0015] Optionally, a transparent protective cover is provided on the support platform, and the transparent protective cover is mounted on the support platform by a plurality of fixing bolts. The transparent protective cover and the opposite side walls of the support platform enclose a protective chamber for the fan blades to rotate.

[0016] Optionally, the automatic control unit includes a PLC controller, a start button, a stop button, an emergency stop button and a reset button;

[0017] The operation execution unit, the safety detection unit and the alarm unit are all electrically connected to the PLC controller. When the safety switch actuator is away from the safety switch sensor, the safety switch sensor sends out detection information, and the PLC controller controls the alarm unit to send out alarm information according to the detection information, and controls the operation execution unit to stop running;

[0018] The start button is used to control the power source of the operation execution unit to start operation;

[0019] The stop button is used to control the power source of the operation execution unit to stop running;

[0020] The emergency stop button is used to control the emergency stop of the power source of the operation execution unit;

[0021] The reset button is used to control the power source of the operation execution unit to automatically reset.

[0022] Optionally, the automatic control unit further comprises a touch panel, the touch panel is electrically connected to the PLC controller, and the touch panel is used to display status information of the operation execution unit, the safety detection unit and the alarm unit;

[0023] The touch panel is respectively provided with a start touch option corresponding to the start button, a stop touch option corresponding to the stop button, an emergency stop touch option corresponding to the emergency stop button, and a reset touch option corresponding to the reset button.

[0024] Optionally, a safety door is hingedly provided on the top wall of the support platform, a transparent observation window is provided on the safety door, and the safety door is fixed to the support platform by a lock.

[0025] Optionally, a power socket and a network cable interface are installed on the side wall of the support platform.

[0026] Optionally, handles are provided on both side walls of the support platform, and nylon blocks are provided at the four corners of the bottom of the support platform.

[0027] The utility model provides a safety sensor control teaching experiment platform, which has the following beneficial effects:

[0028] 1. In the safety sensor teaching experiment, by using actual actuators to cooperate with safety sensor control and simulating actual industrial application scenarios, it helps students to intuitively understand the actual application of safety sensor control in industrial sites and improves the teaching effect;

[0029] 2. The setting of fan blades and motors can simulate the working environment of industrial sites, so that students can judge the actual operating status of the motor inside the support platform through the rotation of fan blades during the teaching experiment;

[0030] 3. The safety switch sensor and the safety switch actuator constitute the manual detection mode, and the safety laser scanner constitutes the automatic detection mode. The use of manual detection mode and automatic detection mode can help enhance students' experience in learning safety sensor control, simulate actual industrial scenarios, and improve teaching effectiveness.

[0031] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present utility model, nor are they intended to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 This is an overall schematic diagram of a safety sensing teaching experiment platform in an embodiment of the present application;

[0034] Figure 2 It is embodied in the embodiments of this application Figure 1 Schematic diagram of the structure behind the hidden transparent protective cover;

[0035] Figure 3 This is a front view of a safety sensing teaching experiment platform in an embodiment of the present application;

[0036] Figure 4 It is embodied in the embodiments of this application Figure 3 Schematic diagram of the cross-sectional structure in the CC direction.

[0037] Figure numerals: 1. Support platform; 2. Work execution unit; 21. Fan blades; 22. Motor; 23. Transparent protective cover; 3. Automatic control unit; 31. Start button; 32. Stop button; 33. Emergency stop button; 34. Reset button; 35. Touch panel; 4. Safety detection unit; 41. Safety switch sensor; 42. Safety switch actuator; 43. Safety laser scanner; 5. Alarm unit; 51. Buzzer; 52. Alarm light; 6. Adjustment assembly; 61. Mounting seat; 62. Adjustment cross column; 63. Adjustment sleeve; 64. Clamp; 7. Safety door; 8. Transparent observation window; 9. Lock; 10. Power socket; 11. Network cable interface; 12. Handle; 13. Nylon stopper. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0039] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0040] This embodiment provides a safety sensor control teaching experiment platform. Figure 1 The teaching experiment table includes a supporting platform 1, which is arranged in a box shape. The front side wall of the supporting platform 1 is arranged as an inclined surface. The front side wall of the supporting platform 1 is respectively provided with an operation execution unit 2, an automatic control unit 3, a safety detection unit 4 and an alarm unit 5.

[0041] The automatic control unit 3 is used to control the operation execution unit 2 to start operation. During the operation process, the operation execution unit 2 uses the safety detection unit 4 to detect whether there are people or objects that affect the safety of the operation in the operation environment; if there are, the safety detection unit 4 sends out detection information. According to the detection information, the automatic control unit 3 controls the alarm unit 5 to send out an alarm information and controls the operation execution unit 2 to stop operation. The teaching experiment platform constructed by the above scheme has an actual actuator to cooperate with the safety sensor detection when conducting the safety sensor teaching experiment, simulating the actual industrial application scene, which helps students to intuitively understand the actual application of safety sensor control in the industrial field and helps to improve the teaching effect.

[0042] Reference Figure 2 , Figure 3 and Figure 4 The operation execution unit 2 includes a motor 22. The motor 22 in this embodiment can be a single-phase AC motor 22. The body of the motor 22 is arranged inside the support platform 1. The driving shaft of the motor 22 is connected to the fan blades 21 through a coupling. The fan blades 21 are rotatably arranged on the side wall of the support platform 1. The side wall of the support platform 1 is provided with a rotating hole for the coupling to pass through; when the motor 22 starts to run, the driving shaft of the motor 22 drives the fan blades 21 to rotate. The fan blades 21 and the setting of the fan blades 21 can simulate the working environment of the industrial site, so that during the teaching experiment, students can judge the actual operating status of the motor 22 inside the support platform 1 through the rotation of the fan blades 21.

[0043] In order to improve the safety during the teaching experiment, a transparent protective cover 23 is provided on the support platform 1. The transparent protective cover 23 is used to cover the fan blades 21, which helps to prevent safety accidents caused by accidental touching of the fan blades 21 by human hands during the rotation of the fan blades 21. In this embodiment, the transparent protective cover 23 is installed and connected to the side wall of the support platform 1 by a plurality of fixing bolts, and a protective chamber is formed between the transparent protective cover 23 and the opposite side wall of the support platform 1, and the protective chamber is used for the rotation of the fan blades 21.

[0044] Reference Figure 2 The safety detection unit 4 includes a safety switch sensor 41 and a safety switch actuator 42. The safety switch sensor 41 is fixedly mounted on the support platform 1. The safety switch sensor 41 and the safety switch actuator 42 are tightly attracted. The support platform 1 is provided with an adjustment component 6 for adjusting the distance between the safety switch actuator 42 and the safety switch sensor 41.

[0045] When the motor 22 is operating normally, if a person adjusts the component 6 to move the safety switch actuator 42 away from the safety switch sensor 41, the safety switch sensor 41 detects that the safety switch actuator 42 is not attracted to it, and the safety switch sensor 41 can send detection information related to the safety switch actuator 42 not being attracted to the safety switch sensor 41 to the automatic control unit 3, and the automatic control unit 3 controls the alarm unit 5 to issue an alarm message, and at the same time controls the motor 22 in the job execution unit 2 to stop running, thereby finally realizing the control teaching of safety sensing.

[0046] Reference Figure 3 The adjustment component 6 includes a mounting seat 61, which is fixedly mounted on the side wall of the support platform 1 by connecting bolts, and the safety switch sensor 41 is fixedly mounted on the top wall of the mounting seat 61. An adjusting cross column 62 is fixedly mounted on the mounting seat 61 and located on one side of the safety switch sensor 41. The adjusting cross column 62 is horizontally arranged, and one end of the adjusting cross column 62 is fixed to the mounting seat 61 by a support leg, and the other end of the adjusting cross column 62 faces the safety switch sensor 41 and is set as a free end. An adjusting sleeve 63 is slidably connected on one side of the adjusting cross column 62 and close to its free end, and a clamp 64 is provided on the adjusting sleeve 63. The clamp 64 is used to clamp and fix the safety switch actuator 42, and a sliding opening for the adjusting cross column 62 to pass through is opened on the side wall of the clamp 64, so that the clamp 64 can stably slide on the adjusting cross column 62 along with the adjusting sleeve 63, thereby realizing the distance adjustment between the safety switch actuator 42 and the safety switch sensor 41.

[0047] In this embodiment, the safety switch sensor 41 is detachably connected to the mounting base 61 by a locking bolt. This mounting method has a simple structure and is convenient for disassembly and assembly, making it easy for personnel to replace safety switch sensors 41 of different models, thereby helping to improve teaching effects.

[0048] Reference Figure 2 The alarm unit 5 includes a buzzer 51, which corresponds to the safety switch sensor 41. The buzzer 51 is fixedly mounted on the support platform 1 through a support. The buzzer 51 is controlled by the automatic control unit 3. When the safety switch actuator 42 is not attracted by the safety switch sensor 41, the buzzer 51 emits an alarm sound.

[0049] Reference Figure 2 The safety detection unit 4 also includes a safety laser scanner 43, which is electrically connected to the automatic control unit 3 and is fixedly mounted on the support platform 1; when a person or other object is detected within the detection range of the safety laser scanner 43, the safety laser scanner 43 sends detection information to the automatic control unit 3, and then the automatic control unit 3 controls the alarm unit 5 to issue an alarm message according to the detection information sent by the safety laser scanner 43, and controls the motor 22 to stop running.

[0050] The alarm unit 5 also includes an alarm light 52, which corresponds to the safety laser scanner 43. The alarm light 52 is fixedly mounted on the support platform 1 through a connecting seat. When the safety laser scanner 43 detects an obstacle, the automatic control unit 3 controls the alarm light 52 to emit an alarm light.

[0051] It is worth noting that, in this embodiment, the safety switch sensor 41 and the safety switch actuator 42 constitute a manual detection mode, and the safety laser scanner 43 constitutes an automatic detection mode. The use of manual detection mode and automatic detection mode can help enhance students' experience in learning safety sensor control, simulate actual industrial scenarios, and help improve teaching effectiveness.

[0052] Reference Figure 2 The automatic control unit 3 includes a PLC controller, a touch panel 35, a start button 31, a stop button 32, an emergency stop button 33 and a reset button 34. The PLC controller is arranged inside the support platform 1, the touch panel 35 is arranged on the side wall of the support platform 1, the start button 31, the stop button 32 and the reset button 34 are arranged side by side on the side wall of the support platform 1, and the motor 22, the touch panel 35, the start button 31, the stop button 32, the emergency stop button 33 and the reset button 34 are all electrically connected to the PLC controller.

[0053] The start button 31 is used to control the start of the motor 22; the stop button 32 is used to control the stop of the motor 22; the emergency stop button 33 is used to control the emergency stop of the motor 22. In an emergency, the operator can control the emergency stop of the motor 22 through the emergency stop button 33; the reset button 34 is used to control the automatic resetting of the motor 22. When the motor 22 stops in an emergency, the operator presses the reset button 34 to reset the motor 22, and then the operator can press the start button 31 again to allow the motor 22 to operate normally.

[0054] The touch panel 35 can display the status information of components such as the motor 22, the safety switch sensor 41, the buzzer 51 and the alarm light 52, so that students can intuitively understand the control process of the safety sensor.

[0055] In this embodiment, a program module can be written in the PLC controller so that the touch panel 35 is respectively provided with a start touch option corresponding to the start button 31, a stop touch option corresponding to the stop button 32, an emergency stop touch option corresponding to the emergency stop button 33, and a reset touch option corresponding to the reset button 34. The operation of the motor 22 can be controlled by the touch screen, which is conducive to improving the students' learning experience.

[0056] Reference Figure 2 The top wall of the support platform 1 is hingedly connected with a safety door 7, and a transparent observation window 8 is provided on the safety door 7. The transparent observation window 8 is provided to facilitate the user to observe the composition structure of the PLC controller inside the support platform 1 and the operating status of each component. The safety door 7 is fixed to the top wall of the support platform 1 by a lock 9, and the lock 9 can be opened by a key to replace the components inside the support platform 1 to meet different experimental requirements.

[0057] Reference Figure 2 Both side walls of the support platform 1 are provided with handles 12 , which facilitate personnel to lift and move the support platform 1 .

[0058] Nylon stoppers 13 are respectively installed at the four corners of the bottom of the support platform 1 to raise the support platform 1 and prevent the bottom of the support platform 1 from being worn during use.

[0059] Reference Figure 2 The side wall of the support platform 1 is also designed to be equipped with a power socket 10 and a network cable interface 11, and the power cord and the network cable can be directly inserted into the outside of the support platform 1, which is convenient for powering on the equipment and programming and debugging.

[0060] It should be noted that the teaching experiment platform disclosed in this embodiment uses two different types of safety sensors, namely safety switch sensors and safety laser scanners, for sensor control teaching, and both the safety switch sensors and safety laser scanners can be detachably installed on the support platform, which is convenient for replacing different types of safety sensors for teaching. In addition, the safety switch sensor and the safety switch actuator constitute a manual detection mode, and the safety laser scanner constitutes an automatic detection mode. The use of manual detection mode and automatic detection mode can help improve students' experience in learning safety sensor control, simulate actual industrial scenarios, and help improve teaching effects.

[0061] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A safety sensor control teaching experiment platform, characterized in that: It comprises a support platform (1), on which an operation execution unit (2), an automatic control unit (3), a safety detection unit (4) and an alarm unit (5) are respectively provided; The safety detection unit (4) comprises a safety switch sensor (41) and a safety switch actuator (42); the safety switch sensor (41) is fixedly mounted on the support platform (1); the safety switch sensor (41) and the safety switch actuator (42) are mutually attracted; and an adjustment component (6) for adjusting the distance between the safety switch actuator (42) and the safety switch sensor (41) is provided on the support platform (1); The operation execution unit (2) and the alarm unit (5) are controlled by an automatic control unit (3); When the safety switch actuator (42) and the safety switch sensor (41) are not attracted, the automatic control unit (3) controls the alarm unit (5) to issue an alarm message and controls the operation execution unit (2) to stop running.

2. The teaching experiment platform according to claim 1, characterized in that: The adjustment assembly (6) comprises a mounting seat (61), an adjustment cross column (62), an adjustment sleeve (63) and a clamp (64); the mounting seat (61) is fixedly mounted on the support platform (1); the safety switch sensor (41) is fixed to the mounting seat (61) by means of mounting bolts; the adjustment cross column (62) is fixed to the mounting seat (61); the adjustment sleeve (63) is slidably connected to the adjustment cross column (62); the clamp (64) is connected to the adjustment sleeve (63); and the clamp (64) is used to clamp and fix the safety switch actuator (42).

3. The teaching experiment platform according to claim 1, characterized in that: The alarm unit (5) comprises a buzzer (51) which is fixedly mounted on the support platform (1). When the safety switch actuator (42) is not attracted to the safety switch sensor (41), the buzzer (51) emits an alarm sound.

4. The teaching experiment platform according to claim 1, characterized in that: The safety detection unit (4) further comprises a safety laser scanner (43), wherein the safety laser scanner (43) is fixedly mounted on the support platform (1). When an obstacle is detected within the detection range of the safety laser scanner (43), the automatic control unit (3) controls the alarm unit (5) to issue an alarm message and controls the operation execution unit (2) to stop operating.

5. The teaching experiment platform according to claim 4, characterized in that: The alarm unit (5) further comprises an alarm light (52), which is mounted on the supporting platform (1). When the safety laser scanner (43) detects an obstacle, the alarm light (52) emits an alarm light.

6. The teaching experiment platform according to claim 1, characterized in that: The operation execution unit (2) comprises a fan blade (21) and a motor (22); the fan blade (21) is rotatably arranged on the support platform (1); the body of the motor (22) is arranged inside the support platform (1); the drive shaft of the motor (22) is connected to the fan blade (21) via a coupling; and the side wall of the support platform (1) is provided with a rotating hole for the coupling to pass through.

7. The teaching experiment platform according to claim 6, characterized in that: A transparent protective cover (23) is provided on the support platform (1). The transparent protective cover (23) is mounted on the support platform (1) via a plurality of fixing bolts. The transparent protective cover (23) and the opposite side walls of the support platform (1) enclose a protective chamber for the fan blades (21) to rotate.

8. The teaching experiment platform according to claim 1, characterized in that: The automatic control unit (3) comprises a PLC controller, a start button (31), a stop button (32), an emergency stop button (33) and a reset button (34); The operation execution unit (2), the safety detection unit (4) and the alarm unit (5) are all electrically connected to the PLC controller; when the safety switch actuator (42) is away from the safety switch sensor (41), the safety switch sensor (41) sends out detection information, and the PLC controller controls the alarm unit (5) to send out alarm information according to the detection information, and controls the operation execution unit (2) to stop running; The start button (31) is used to control the power source of the operation execution unit (2) to start operation; The stop button (32) is used to control the power source of the operation execution unit (2) to stop running; The emergency stop button (33) is used to control the emergency stop of the power source of the operation execution unit (2); The reset button (34) is used to control the automatic resetting of the power source of the operation execution unit (2).

9. The teaching experiment platform according to claim 8, characterized in that: The automatic control unit (3) further comprises a touch panel (35), wherein the touch panel (35) is electrically connected to the PLC controller, and the touch panel (35) is used to display status information of the operation execution unit (2), the safety detection unit (4) and the alarm unit (5); The touch panel (35) is respectively provided with a start touch option corresponding to the start button (31), a stop touch option corresponding to the stop button (32), an emergency stop touch option corresponding to the emergency stop button (33), and a reset touch option corresponding to the reset button (34).

10. The teaching experiment platform according to claim 1, characterized in that: A safety door (7) is hingedly provided on the top wall of the support platform (1), a transparent observation window (8) is provided on the safety door (7), and the safety door (7) is fixed to the support platform (1) via a lock (9).

11. The teaching experiment platform according to claim 3, characterized in that: A power socket (10) and a network cable interface (11) are installed on the side wall of the support platform (1).

12. The teaching experiment platform according to claim 1, characterized in that: Both side walls of the support platform (1) are provided with handles (12), and nylon stoppers (13) are provided at the four corners of the bottom of the support platform (1).

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