Novel PLC automatic control cabinet
By installing a protective mechanism in the PLC automatic control cabinet, the stress during the plugging and unplugging process is dispersed and transferred, solving the problem of easy damage to cables and plugs, and improving the stability and safety of the power supply connection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN ZHONGNUOTAI TECH CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-06-05
AI Technical Summary
When plugging and unplugging the power supply plug, the cable root and the connection plug are easily subjected to large bending stress and tensile force, which can lead to core wire breakage, insulation wear, and plug loosening, resulting in poor contact, arcing, or even short circuit faults, affecting the reliability of power supply and bringing safety hazards.
A novel PLC automatic control cabinet was designed. By setting up a protective mechanism between the power supply line and the plug, including a protective plate, a protective groove, a protective rod, and a movable plate, a dedicated physical shielding channel is formed to disperse and transfer the stress during the plugging and unplugging process, and to prevent the cable and plug from bearing bending and pulling forces alone.
It effectively prevents cable core breakage, insulation wear, and plug loosening, reduces the risk of poor contact, arcing, and short circuit faults, and improves the stability and safety of power supply connections.
Smart Images
Figure CN224329765U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PLC control cabinet technology, specifically a new type of PLC automatic control cabinet. Background Technology
[0002] A programmable logic controller (PLC) is a digital electronic control system designed specifically for industrial environments. It is the core "brain" of modern industrial automation, used to replace traditional relay control logic to achieve automated control, monitoring, and protection of mechanical equipment, production lines, or processes.
[0003] Programmable Logic Controller (PLC) automatic control cabinets are core equipment in modern industrial automation systems. They are used to centrally install PLC main units, power modules, input / output terminals, and related auxiliary electrical components, and provide necessary environmental protection. The power cables connecting the control cabinet to the external power supply system are usually directly inserted through openings in the cabinet wall and connected to the PLC body or terminal blocks. However, when plugging and unplugging the power connectors with improper force, the cable roots and connectors are subjected to significant bending and pulling stresses, leading to broken internal wires, worn insulation layers, and loose connectors. This can cause poor contact, arcing, or even short circuits, seriously affecting power supply reliability and posing safety hazards. The concentrated stress generated during plugging and unplugging cannot be effectively distributed, and frequent plugging and unplugging accelerates the aging and failure process of this part. Utility Model Content
[0004] The purpose of this utility model is to provide a new type of PLC automatic control cabinet, which solves the problem in the background technology that when the power supply plug is plugged in or out with improper force, the cable root and the connection plug will be subjected to large bending stress and tensile force, which will lead to the breakage of the internal core wire of the cable, wear of the insulation layer, loosening of the plug, resulting in poor contact, arcing or even short circuit faults.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0006] A new type of PLC automatic control cabinet includes:
[0007] The cabinet contains a PLC body, and a cabinet door is hinged to one side of the cabinet. A power supply line is connected to one side of the PLC body, and heat dissipation covers are installed on both sides of the cabinet.
[0008] A pick-and-place mechanism is located between the cabinet and the PLC body and is used to remove the PLC body from inside the cabinet.
[0009] A protective mechanism is located between the cabinet and the power supply line to protect the power supply line. The protective mechanism includes a protective plate on one side of the cabinet, with a protective groove inside the plate. A power socket is fixedly installed on one side of the PLC body, and a power plug is inserted into the power socket. The power supply line extends to one side of the protective groove and is fixedly connected to the power plug. A support assembly is provided between the power supply line and the power plug.
[0010] Preferably, the support assembly includes multiple protective rods fixedly installed on one side of the power plug, a movable plate is fixedly installed on one side of the multiple protective rods, the movable plate is fixedly connected to the power supply line, and a protective sleeve is fixedly installed between the power supply line and the movable plate.
[0011] Preferably, two positioning plates are fixedly installed on both sides of the protective plate, and multiple positioning slots for inserting the protective plate are opened on one side of the cabinet. Bolts are screwed between the multiple positioning plates and the multiple positioning slots.
[0012] Preferably, the pick-and-place mechanism includes two slide bars 1 fixedly installed on the top of the PLC body, the top of the cabinet is provided with a slide groove for the two slide bars 1 to slide, the bottom of the cabinet is provided with a support plate, the bottom of the support plate is fixedly installed with two slide bars 2, the bottom of the cabinet is provided with a pick-and-place groove for the slide bars 2 to slide, and a control component is provided on one side of the support plate.
[0013] Preferably, the control component includes a control board fixed to one side of the receiving plate, a limit component is provided between the control board and the cabinet, two limit plates are fixedly installed on the top of the receiving plate, and a stress groove is provided on one side of the bottom of the PLC body, one of the limit plates corresponding to the stress groove.
[0014] Preferably, the limiting assembly includes two sets of limiting sleeves fixedly installed on one side of the control panel. Each limiting sleeve consists of two fixing blocks. Both fixing blocks are fixedly connected to the control panel. A fixing rod is fixedly installed between the two fixing blocks. A movable block is movably sleeved on the outer wall of each of the two fixing rods. A limiting insert plate is fixedly installed between the two movable blocks. A limiting groove for the limiting insert plate to be inserted is opened on one side of the cabinet body.
[0015] Preferably, two extension blocks are fixedly installed on one side of the control board, and a control rod is fixedly installed between the two extension blocks. An opening slot is provided on one side of the control board.
[0016] Compared with the prior art, the beneficial effects achieved by this utility model are:
[0017] This invention effectively solves the prominent problems of easy damage and low reliability at the power supply line connection in the prior art through the setting of the protective mechanism. The protective plate and the protective groove inside the protective plate provide a dedicated physical shielding channel for the power supply cable entry point. The protective rod is directly fixed to one side of the power supply plug and is fixedly connected to the power supply line through the moving plate. When plugging and unplugging the power supply plug, the bending stress and tensile force acting on the root of the power supply line can be effectively transferred to the rigid protective rod and the moving plate, instead of being borne by the fragile cable and plug connection part alone. This achieves active stress dispersion and transfer, and at the same time reduces the risk of cable core wire breakage, insulation layer wear, and plug loosening during plugging and unplugging. It effectively prevents poor contact, arcing, and short circuit faults caused by these factors, fundamentally ensuring the stability and long-term reliability of the power supply connection and greatly improving the safety of equipment operation. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is one of the structural diagrams of the PLC body and the cabinet when they are separated.
[0020] Figure 3 This is the second schematic diagram of the structure of the PLC body and the cabinet when they are separated.
[0021] Figure 4 This is a schematic diagram of the picking and placing mechanism of this utility model;
[0022] Figure 5 This is a structural diagram of the protective mechanism of this utility model during disassembly;
[0023] Figure 6 This is a schematic diagram of the structure of the support component of this utility model.
[0024] The components include: 1. Cabinet body; 2. Picking and placing mechanism; 3. Protective mechanism; 4. PLC body; 5. Cabinet door body; 6. Heat dissipation cover;
[0025] 21. Slide bar one; 22. Receiving plate; 23. Limiting plate; 24. Control rod; 25. Control plate; 26. Limiting insert plate; 27. Fixing block; 28. Fixing rod; 29. Moving block; 210. Slide bar two;
[0026] 31. Power socket; 32. Protective plate; 33. Positioning plate; 34. Power plug; 35. Power cord; 36. Movable plate; 37. Protective sleeve; 38. Protective rod. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] refer to Figure 1 A new type of PLC automatic control cabinet includes: a cabinet body 1, a PLC body 4 is installed inside the cabinet body 1, and a cabinet door body 5 is hinged to one side of the cabinet body 1. A power supply line 35 is connected to one side of the PLC body 4, and heat dissipation covers 6 are installed on both sides of the cabinet body 1.
[0029] refer to Figure 2 , Figure 5 and Figure 6 The protective mechanism 3 is located between the cabinet 1 and the power supply line 35 and is used to protect the power supply line 35. The protective mechanism 3 includes a protective plate 32 set on one side of the cabinet 1. The protective plate 32 has a protective groove inside. A power socket 31 is fixedly installed on one side of the PLC body 4. A power plug 34 is inserted into the power socket 31. The power supply line 35 extends to one side of the protective groove and is fixedly connected to the power plug 34. A support component is set between the power supply line 35 and the power plug 34.
[0030] Furthermore, the support assembly includes multiple protective rods 38 fixedly installed on one side of the power plug 34, a movable plate 36 fixedly installed on one side of the multiple protective rods 38, the movable plate 36 being fixedly connected to the power supply line 35, a protective sleeve 37 being fixedly installed between the power supply line 35 and the movable plate 36, two positioning plates 33 being fixedly installed on both sides of the protective plate 32, and multiple positioning slots for the protective plate 32 to be inserted are provided on one side of the cabinet 1, and bolts are screwed between the multiple positioning plates 33 and the multiple positioning slots;
[0031] refer to Figure 2 , Figure 3 and Figure 4 The pick-and-place mechanism 2 includes two slide bars 21 fixedly installed on the top of the PLC body 4. The top of the cabinet 1 is provided with a slide groove for the two slide bars 21 to slide. The bottom of the cabinet 1 is provided with a support plate 22. Two slide bars 210 are fixedly installed on the bottom of the support plate 22. The bottom of the cabinet 1 is provided with a pick-and-place groove for the slide bars 210 to slide. A control component is provided on one side of the support plate 22.
[0032] Furthermore, the control components include a control plate 25 fixed on one side of the receiving plate 22, a limit component is provided between the control plate 25 and the cabinet 1, two limit plates 23 are fixedly installed on the top of the receiving plate 22, and a stress groove is provided on one side of the bottom of the PLC body 4, one of the limit plates 23 corresponds to the stress groove.
[0033] Furthermore, the limiting assembly includes two sets of limiting sleeves fixedly installed on one side of the control panel 25. Each limiting sleeve consists of two fixing blocks 27. Both fixing blocks 27 are fixedly connected to the control panel 25. A fixing rod 28 is fixedly installed between the two fixing blocks 27. A moving block 29 is movably sleeved on the outer wall of each of the two fixing rods 28. A limiting insert plate 26 is fixedly installed between the two moving blocks 29. A limiting groove for the limiting insert plate 26 to be inserted is opened on one side inside the cabinet 1.
[0034] Two extension blocks are fixedly installed on one side of the control board 25, and a control rod 24 is fixedly installed between the two extension blocks. An opening slot is provided on one side of the control board 25.
[0035] The protective sleeve 37 is made of silicone (Shore hardness 50A), which effectively absorbs lateral stress.
[0036] The overall working principle of this utility model is as follows:
[0037] First, insert the positioning plate 33 into the positioning groove and fix it to the positioning groove with bolts to prevent the protective plate 32 from falling off. Then, use the protective sleeve 37 and the moving plate 36 to insert the power plug 34 into the protective groove and connect it to the power socket 31. The protective sleeve 37 can enhance the stability of the connection between the power line 35 and the power plug 34 and prevent the power line 35 from loosening or being damaged due to external pulling. The multiple protective rods 38 form a supporting force, making the power plug 34 more stable during insertion and removal.
[0038] When the PLC body 4 needs to be taken out or put in, first open the cabinet door body 5, pull the limit plate 26 to separate it from the limit groove, and make the limit plate 26 more stable during the movement of the two moving blocks 29 on the outer wall of the two fixed rods 28. After the limit plate 26 is separated from the limit groove, the PLC body 4 can be taken out or put in the cabinet 1, which makes it convenient to inspect and maintain it.
[0039] The two sliders 21 on the top of the PLC body 4 can slide in the groove opened on the top of the cabinet 1, providing guidance and support for the horizontal movement of the PLC body 4. The receiving plate 22 is used to receive the PLC body 4. By sliding the slider 210 in the pick-and-place groove, the receiving plate 22 and the PLC body 4 on it are moved together. Pulling the control rod 24 on one side of the control board 25, since the control board 25 is fixedly connected to the receiving plate 22, the receiving plate 22 can be moved along the pick-and-place groove, thereby realizing the operation of taking out or putting in the PLC body 4.
[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A novel PLC automatic control cabinet, characterized in that, include: Cabinet (1), the interior of the cabinet (1) is equipped with a PLC body (4), and a cabinet door body (5) is hinged to one side of the cabinet (1). A power supply line (35) is connected to one side of the PLC body (4). Heat dissipation covers (6) are installed on both sides of the cabinet (1). The pick-and-place mechanism (2) is located between the cabinet (1) and the PLC body (4) and is used to remove the PLC body (4) from inside the cabinet (1); The protective mechanism (3) is located between the cabinet (1) and the power supply line (35) and is used to protect the power supply line (35). The protective mechanism (3) includes a protective plate (32) set on one side of the cabinet (1). The protective plate (32) has a protective groove inside. A power socket (31) is fixedly installed on one side of the PLC body (4). A power plug (34) is inserted into the power socket (31). The power supply line (35) extends to one side of the protective groove and is fixedly connected to the power plug (34). A support component is provided between the power supply line (35) and the power plug (34).
2. The novel PLC automatic control cabinet according to claim 1, characterized in that: The support assembly includes multiple protective rods (38) fixedly installed on one side of the power plug (34), and a movable plate (36) is fixedly installed on one side of the multiple protective rods (38). The movable plate (36) is fixedly connected to the power supply line (35), and a protective sleeve (37) is fixedly installed between the power supply line (35) and the movable plate (36).
3. The novel PLC automatic control cabinet according to claim 1, characterized in that: Two positioning plates (33) are fixedly installed on both sides of the protective plate (32). Multiple positioning slots for the protective plate (32) to be inserted are provided on one side of the cabinet (1). Bolts are screwed between the multiple positioning plates (33) and the multiple positioning slots.
4. The novel PLC automatic control cabinet according to claim 1, characterized in that: The pick-and-place mechanism (2) includes two slide bars (21) fixedly installed on the top of the PLC body (4). The top of the cabinet (1) is provided with a sliding groove for the two slide bars (21) to slide. The bottom of the cabinet (1) is provided with a support plate (22). The bottom of the support plate (22) is fixedly installed with two slide bars (210). The bottom of the cabinet (1) is provided with a pick-and-place groove for the slide bars (210) to slide. A control component is provided on one side of the support plate (22).
5. A novel PLC automatic control cabinet according to claim 4, characterized in that: The control component includes a control plate (25) fixed on one side of the receiving plate (22). A limit component is provided between the control plate (25) and the cabinet (1). Two limit plates (23) are fixedly installed on the top of the receiving plate (22). A stress groove is provided on one side of the bottom of the PLC body (4), and one of the limit plates (23) corresponds to the stress groove.
6. A novel PLC automatic control cabinet according to claim 5, characterized in that: The limiting assembly includes two sets of limiting sleeves fixedly installed on one side of the control panel (25). Each limiting sleeve consists of two fixing blocks (27). Both fixing blocks (27) are fixedly connected to the control panel (25). A fixing rod (28) is fixedly installed between the two fixing blocks (27). A moving block (29) is movably sleeved on the outer wall of each of the two fixing rods (28). A limiting insert plate (26) is fixedly installed between the two moving blocks (29). A limiting groove for the limiting insert plate (26) to be inserted is provided on one side of the cabinet (1).
7. A novel PLC automatic control cabinet according to claim 5, characterized in that: Two extension blocks are fixedly installed on one side of the control board (25), and a control rod (24) is fixedly installed between the two extension blocks. An opening slot is provided on one side of the control board (25).