PLC digital quantity module circuit protection device

Abstract

The utility model discloses a PLC digital quantity module circuit protection device which comprises a frame, sliding grooves are symmetrically arranged in the frame, a bunching mechanism is slidably connected to the sliding grooves, and a circuit is connected in the bunching mechanism. The protection mechanism comprises a top plate, the top plate is installed on one side of the top end of the frame, a motor is installed above the top plate, the output end of the motor is connected with a cutter block, a cutting head is arranged at the bottom of the cutter block, and the protection mechanism controls the motor to start to push the cutter block to rapidly push downwards. Therefore, the cutting head can cut the circuit so as to disconnect the circuit, accidents are prevented, the cutting head can generate pressure when cutting the circuit so as to trigger the pressure controller, the pressure controller directly controls the electromagnetic chuck to be started, and therefore fast synchronous response is achieved, and the bunching block pulls the circuit cut off by the cutting head open. And the protection effect of the equipment on the circuit is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit protection, and in particular relates to a PLC digital quantity module circuit protection device. Background Art

[0002] With the continuous improvement of industrial automation, programmable logic controllers (PLCs) are increasingly used in industrial control systems. Among them, digital modules, as an important part of PLC, are responsible for receiving and sending digital signals to achieve control of field equipment. However, in practical applications, PLC digital module circuits often face various challenges, such as electromagnetic interference, power supply fluctuations, overcurrent and overvoltage, etc. These factors may cause digital module circuits to fail, thereby affecting the stability and reliability of the entire control system.

[0003] At present, when the circuit is overcurrent, overvoltage, short-circuited, or overheated, it will cause unstable operation of the equipment. When the circuit is not disconnected or continues to operate, the overall safety hazard will be greatly increased. When the lines are not planned, most of them are complicated and difficult for staff to identify the lines, which is not conducive to subsequent maintenance work. At the same time, there is a lack of a mechanism to quickly disconnect the lines, which reduces the protection ability of the equipment. Utility Model Content

[0004] The utility model aims to provide a PLC digital quantity module circuit protection device to solve the problems of line planning and line disconnection in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A PLC digital module circuit protection device comprises a frame, wherein the frame is symmetrically provided with slide grooves, the slide grooves are slidably connected with a wire harness mechanism, and the wire harness mechanism is internally connected with a circuit; a protection mechanism is provided above the frame, wherein the protection mechanism is used to cut off the circuit.

[0007] Furthermore, the wiring harness mechanism includes a wiring harness block, a slider is provided at the bottom of the wiring harness block, wherein the slider is matched with the slide groove, the wiring harness block is symmetrically provided with binding grooves, wire grooves are opened on both sides of the binding grooves, and a limiting block is provided on the outer wall of the line.

[0008] Furthermore, a connection surface is provided at the center above the wiring harness block, a fitting block is installed on the top of the connection surface, a protective plate is fixed on the top of the fitting block, and countersunk holes are provided on the protective plate and the connection surface.

[0009] Furthermore, the protection mechanism comprises a top plate, which is installed on one side of the top end of the frame, a motor is installed above the top plate, a knife block is connected to the output end of the motor, and a cutting head is provided at the bottom of the knife block.

[0010] Furthermore, the side wall of the frame is provided with a side wall groove, and a pad is slidably mounted on the side wall groove. The pad is placed under the line to be cut by the cutting head, and while the cutting head is cutting, the pad supports the line, thereby improving the cutting efficiency of the cutting head. The pad is made of wood, which is not easy to conduct electricity and will not easily damage the cutting head during the cutting process, thereby reducing the problem of hard collision.

[0011] Furthermore, a guide groove is provided on one side of the side wall groove, wherein the guide groove cooperates with the blade block. The use of the guide groove can stabilize the blade block and restrict it to move up and down in the guide groove, thereby improving the stabilization effect of the blade block, thereby facilitating the cutting head to perform stable cutting.

[0012] Furthermore, an electromagnetic suction cup is provided on one side of the frame, and the wiring harness block is made of metal and can be adsorbed by the electromagnetic suction cup.

[0013] Furthermore, a buffer pad is provided on the surface of the electromagnetic chuck. When the harness block quickly approaches the electromagnetic chuck, it will hit the buffer pad to reduce vibration, thereby increasing the service life of the harness block.

[0014] Furthermore, a pressure controller is provided inside the frame, and the pressure controller is distributed below the pad, and the pressure controller is electrically connected to the electromagnetic suction cup.

[0015] The technical solution of the utility model has the following beneficial effects:

[0016] 1. The wiring harness mechanism places the line in the wire groove, and aligns the limiting block inside the binding groove. This can limit the line inside the binding groove, thereby preventing the line from changing position and improving the overall line planning beauty. The setting of the protective plate can limit the upward displacement of the limiting block inside the binding groove, thereby preventing the line from escaping from the wire groove.

[0017] 2. The protection mechanism controls the motor to start and push the knife block downward quickly, so that the cutting head will cut the line and disconnect the circuit to prevent accidents. The cutting head will generate pressure when cutting the line, thereby triggering the pressure controller. The pressure controller directly controls the electromagnetic suction cup to start, so as to react quickly and synchronously. The wire harness block pulls open the line cut by the cutting head, further improving the protection effect of the equipment on the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2It is a schematic diagram of the split structure of the utility model.

[0021] Figure 3 This is a schematic diagram of the wiring harness structure of the utility model.

[0022] Figure 4 This is a schematic diagram of the protective plate structure of the utility model.

[0023] Figure 5 It is a schematic diagram of the planar structure of the utility model.

[0024] Figure 6 It is a schematic diagram of the split structure of the utility model.

[0025] Figure numerals: 10, frame; 11, slide groove; 12, harness block; 13, restraining groove; 14, wire groove; 15, line; 16, limiting block; 17, slider; 18, protective plate; 19, fitting block; 20, countersunk hole; 21, connecting surface; 22, pad; 23, side wall groove; 24, guide groove; 25, top plate; 26, motor; 27, knife block; 28, cutting head; 29, electromagnetic suction cup; 30, buffer pad. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0027] Embodiment 1:

[0028] refer to Figure 1 , a PLC digital module circuit protection device, comprising a frame 10, wherein a slide groove 11 is symmetrically arranged inside the frame 10, a wire harness mechanism is slidably connected to the slide groove 11, and a line 15 is connected inside the wire harness mechanism;

[0029] refer to Figure 1-Figure 4 The wiring harness mechanism includes a wiring harness block 12, a slider 17 is provided at the bottom of the wiring harness block 12, wherein the slider 17 is consistent with the slide groove 11, and the wiring harness block 12 is symmetrically provided with binding grooves 13, and wire grooves 14 are opened on both sides of the binding groove 13, and a limiting block 16 is provided on the outer wall of the line 15.

[0030] In the above scheme, the structure of the slider 17 and the slide groove 11 adopts a "cross" structure, which can facilitate the stable and smooth displacement of the slider 17 on the slide groove 11, is not easy to generate vibration and noise, and improves the sliding stability. The line 15 is placed in the wire groove 14, and the limiting block 16 is aligned inside the restraining groove 13. In this way, the line 15 can be restricted inside the restraining groove 13, thereby preventing the line 15 from changing its position and improving the overall line planning beauty.

[0031] Further references Figure 3 and Figure 4 A connecting surface 21 is provided at the center above the harness block 12 , and a fitting block 19 is installed on the top of the connecting surface 21 . A protective plate 18 is fixed on the top of the fitting block 19 , and countersunk holes 20 are provided on the protective plate 18 and the connecting surface 21 .

[0032] In the above scheme, after the line 15 is placed, the fitting block 19 and the connection surface 21 are fitted together, and bolts or nuts are installed on the countersunk holes 20 to fix the protective plate 18. By installing the bolts or nuts on the countersunk holes 20, the fixing process of the protective plate 18 becomes simple and quick. At the same time, this design also makes the subsequent maintenance or replacement of the line 15 more convenient and improves the work efficiency. The setting of the protective plate 18 can limit the upward displacement of the limiting block 16 inside the binding groove 13, thereby preventing the line 15 from escaping from the inside of the wire groove 14.

[0033] refer to Figure 2 and Figure 5 A protection mechanism is provided above the frame 10, wherein the protection mechanism is used to cut off the line 15. The protection mechanism comprises a top plate 25, which is installed on one side of the top of the frame 10, and a motor 26 is installed above the top plate 25. A knife block 27 is connected to the output end of the motor 26, and a cutting head 28 is provided at the bottom of the knife block 27.

[0034] In the above scheme, the start of the motor 26 can push the blade block 27 downward quickly, and the two ends of the line 15 are electrically connected to the power switch and the PLC digital module respectively. The motor 26 is controlled by the computer, and the computer monitors the real-time parameters of the current, overvoltage, overcurrent, leakage, short circuit and other abnormalities in real time. When the computer detects abnormal data, it sends a control instruction to control the motor 26 to start and push the blade block 27 downward quickly, so that the cutting head 28 will cut the line 15 to disconnect the circuit connection and prevent accidents from happening. Only the line 15 needs to be replaced to improve the installation performance of the overall circuit.

[0035] Further references Figure 6The side wall of the frame 10 is provided with a side wall groove 23, and a pad 22 is slidably mounted on the side wall groove 23. The pad 22 is placed under the line 15 cut by the cutting head 28. When the cutting head 28 is cutting, the pad 22 supports the line 15, thereby improving the cutting efficiency of the cutting head 28. The pad 22 is made of wood, which is not easy to conduct electricity. At the same time, the cutting head 28 will not be easily damaged during the cutting process, thereby reducing the problem of hard collision.

[0036] Further references Figure 2 A guide groove 24 is provided on one side of the side wall groove 23. The guide groove 24 cooperates with the blade block 27. The use of the guide groove 24 can stabilize the blade block 27 and limit it to move up and down in the guide groove 24, thereby improving the stabilization effect of the blade block 27, thereby facilitating the cutting head 28 to perform stable cutting.

[0037] Embodiment 2:

[0038] refer to Figure 1 and Figure 6 An electromagnetic suction cup 29 is provided on one side of the frame 10, and the wire harness block 12 is made of metal and can be adsorbed by the electromagnetic suction cup 29. The electromagnetic suction cup 29 generates magnetic force after being energized, wherein the opening and closing of the electromagnetic suction cup 29 is connected to the computer control as a whole. When the computer controls the motor 26, after extending for 1-2 seconds, the electromagnetic suction cup 29 is started, and the electromagnetic suction cup 29 generates magnetic force to adsorb the wire harness block 12. The wire harness block 12 quickly approaches the electromagnetic suction cup 29 through the slider 17 and the slide slot 11, thereby pulling apart the line 15 cut by the cutting head 28, further improving stability.

[0039] Further reference Figure 1 and Figure 6 The surface of the electromagnetic chuck 29 is provided with a buffer pad 30. When the harness block 12 quickly approaches the electromagnetic chuck 29, it will hit the buffer pad 30 to reduce the vibration, thereby improving the service life of the harness block 12.

[0040] Furthermore, a pressure controller is provided inside the frame 10, and the pressure controller is distributed below the pad 22, and the pressure controller is electrically connected to the electromagnetic suction cup 29. When the control command controls the motor 26 to start pushing the knife block 27 downward quickly, the cutting head 28 cuts the line 15, which generates pressure and triggers the pressure controller, and the pressure controller directly controls the electromagnetic suction cup 29 to start, so as to react quickly and synchronously, and the wire harness block 12 pulls the line 15 cut by the cutting head 28, further improving the protection effect of the device on the circuit.

[0041] The specific implementation process of this embodiment is as follows:

[0042] During use, when the computer detects abnormal data, it sends a control command to control the motor 26 to start pushing the knife block 27 downward quickly, so that the cutting head 28 will cut the line 15 to disconnect the circuit connection and prevent accidents from happening. The cutting head 28 will generate pressure when cutting the line 15, thereby triggering the pressure controller, which directly controls the electromagnetic suction cup 29 to start, thereby quickly and synchronously reacting, and the wiring block 12 pulls open the line 15 cut off by the cutting head 28, further improving the protection effect of the equipment on the circuit.

[0043] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Various modifications or equivalent substitutions may be made to the present invention within the essence and protection scope of the present invention. Such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

[0044] In the description of the present utility model, it should be noted that the terms "inside", "front", "back", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the attached circles, or the directions or positional relationships in which the utility model product is usually placed when in use, and are only used to facilitate the description of the present utility model and simplify the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, these terms indicating directions or positional relationships cannot be understood as limiting the present utility model.

[0045] In the description of the present invention, it is further explained that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, these terms can indicate a fixed connection, a detachable connection, or an integral connection between elements; they can also indicate a mechanical connection, an electrical connection; they can also indicate a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

Claims

1. A PLC digital module circuit protection device, characterized in that: It comprises a frame (10), wherein a slide groove (11) is symmetrically arranged inside the frame (10), a wire harness mechanism is slidably connected to the slide groove (11), and a line (15) is connected inside the wire harness mechanism; A protection mechanism is provided above the frame (10), wherein the protection mechanism is used to cut off the line (15).

2. The PLC digital module circuit protection device according to claim 1, characterized in that: The wiring harness mechanism comprises a wiring harness block (12), a slider (17) is provided at the bottom of the wiring harness block (12), wherein the slider (17) matches the slide groove (11), the wiring harness block (12) is symmetrically provided with binding grooves (13), both sides of the binding grooves (13) are provided with wire grooves (14), and the outer wall of the line (15) is provided with a limiting block (16).

3. The PLC digital module circuit protection device according to claim 2 is characterized in that: A connecting surface (21) is provided at the center of the upper part of the wiring harness block (12); a fitting block (19) is installed on the top of the connecting surface (21); a protective plate (18) is fixed on the top of the fitting block (19); countersunk holes (20) are provided on the protective plate (18) and the connecting surface (21).

4. The PLC digital module circuit protection device according to claim 3 is characterized in that: The protection mechanism comprises a top plate (25), wherein the top plate (25) is mounted on one side of the top end of the frame (10), a motor (26) is mounted above the top plate (25), an output end of the motor (26) is connected to a knife block (27), and a cutting head (28) is provided at the bottom of the knife block (27).

5. The PLC digital module circuit protection device according to claim 4, characterized in that: The side wall of the frame (10) is provided with a side wall groove (23), and a pad (22) is slidably mounted on the side wall groove (23).

6. The PLC digital module circuit protection device according to claim 5, characterized in that: A guide groove (24) is provided on one side of the side wall groove (23), wherein the guide groove (24) and the knife block (27) cooperate with each other.

7. The PLC digital module circuit protection device according to claim 6, characterized in that: An electromagnetic suction cup (29) is provided on one side of the frame (10), and the wiring harness block (12) is made of metal and can be sucked by the electromagnetic suction cup (29).

8. The PLC digital module circuit protection device according to claim 7, characterized in that: A buffer pad (30) is provided on the surface of the electromagnetic suction cup (29).

9. The PLC digital module circuit protection device according to claim 8, characterized in that: A pressure controller is provided inside the frame (10), and the pressure controller is distributed below the pad (22). The pressure controller is electrically connected to the electromagnetic suction cup (29).

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