A PLC cabinet with auxiliary structure

Abstract

This utility model relates to the field of PLC cabinet technology and discloses a PLC cabinet with an auxiliary structure, including a cabinet body. A support plate is fixedly installed on the rear side of the cabinet body. Several back plates are arranged from top to bottom on the front side of the support plate. Several electrical racks are arranged from top to bottom on the front side of each back plate. Connecting rods are connected and installed at the four corners of the rear side of the back plate through rotating joints. The rear end of each connecting rod has a slot. The slots on the left and right connecting rods are arranged opposite to each other. The support plate has through slots for engaging the slots. Pins are rotatably installed between the connecting rods on the same side. An adjustment component for connecting the pins is installed on the rear side of the back plate. During installation, multiple electrical components can be externally mounted on multiple electrical racks on a back plate to form an electrical module. Then, the entire electrical module can be quickly installed into the cabinet. During disassembly, the electrical module can also be quickly removed from the cabinet for maintenance, significantly improving the efficiency of installation and disassembly.

Description

Technical Field

[0001] This utility model relates to the field of PLC cabinet technology, specifically a PLC cabinet with an auxiliary structure. Background Technology

[0002] PLC cabinets (Programmable Logic Controller cabinets) are core equipment in the field of industrial automation. They integrate programmable logic controllers (PLCs) to realize equipment automation, process control and network communication functions, and are widely used in industries such as power, metallurgy, and chemical engineering.

[0003] The interior of the PLC cabinet is used to install electrical components such as air switches, PLC controllers, power modules, relays, frequency converters, terminal blocks, and cable trays to form a compact and stable control system.

[0004] Existing PLC cabinets mainly consist of a cabinet body, cabinet doors, and electrical racks. Inside the cabinet body, multiple layers of electrical racks are fixedly installed via support frames. The electrical racks are horizontally positioned and securely fixed inside the cabinet body by welding or bolting, ensuring that the electrical racks will not loosen when bearing the weight of the electrical components and the vibrations generated during operation. The number of layers and spacing of the electrical racks are rationally planned according to the actual number and size of the installed electrical components to make full use of the cabinet space, while ensuring sufficient heat dissipation space and wiring space between each electrical component, avoiding problems such as overheating or tangled wiring that could affect the performance and reliability of the equipment.

[0005] Operators must strictly follow the requirements of the electrical schematic diagram and installation instructions to accurately install each electrical component in the designated position and secure it firmly with bolts, nuts, and other fasteners to prevent components from loosening or falling off due to vibration during equipment operation. At the same time, meticulous electrical connection work is also required, ensuring that the signal lines and power lines between each component are correctly connected according to the specified wiring method to ensure the accuracy of signal transmission and the stability of power supply.

[0006] Due to the limited internal space of the cabinet, the operator's hand movements are restricted, making it difficult to operate flexibly and prone to operational errors; in addition, the installation and disassembly of maintenance components require operation one by one, which is a large amount of work and tedious.

[0007] Therefore, in order to solve the above problems, a PLC cabinet with an auxiliary structure is proposed. Utility Model Content

[0008] The purpose of this utility model is to provide a PLC cabinet with an auxiliary structure to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution: A PLC cabinet with an auxiliary structure includes a cabinet body. A support plate is fixedly installed on the rear side of the cabinet body. Several back plates are arranged vertically on the front side of the support plate from top to bottom. Several electrical racks are arranged horizontally on the front side of each back plate from top to bottom. Connecting rods are connected and installed at the four corners of the rear side of each back plate via rotating joints. The rear end of each connecting rod is provided with a slot. The slots on the left and right sides of the connecting rods are arranged opposite to each other. The support plate is provided with a through slot for engaging the slots. Pins are rotatably installed between the connecting rods on the same side. An adjustment assembly for connecting the pins is installed on the rear side of the back plate.

[0010] Specifically, the adjustment assembly includes a horizontal plate, an internal threaded sleeve, and an external threaded tube. Both ends of the horizontal plate are provided with elongated holes, and the pins are respectively located in the elongated holes. An external threaded tube is rotatably installed on the upper side of the horizontal plate through a bearing seat. One end of the internal threaded sleeve is screwed onto the external threaded tube, and the other end of the internal threaded sleeve is fixedly assembled with the back plate.

[0011] Furthermore, the elongated holes at both ends are symmetrically and obliquely arranged, that is, the distance between the ends of the elongated holes near the back plate is less than the distance between the ends of the elongated holes near the support plate.

[0012] Furthermore, each of the pins is fitted with two retaining rings, and the cross plate is located between the two retaining rings.

[0013] Specifically, a barb is provided at the end of the connecting rod away from the rotating joint, and an arc-shaped baffle is fixedly installed on the side wall of the connecting rod, forming a groove between the arc-shaped baffle and the barb.

[0014] Specifically, it includes an adjusting wrench. The back plate has a through hole, through which the adjusting wrench passes and is inserted into an external threaded tube. The adjusting wrench includes a handwheel and a torque shaft that are fixedly installed together. A key bar is fixedly installed on the circumferential side of the torque shaft, and a keyway for inserting the key bar is provided on the inner wall of the external threaded tube.

[0015] Furthermore, the number of key bars is three, arranged in a circle, and each key bar has a different cross-sectional shape, and the angle between adjacent key bars is also different.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] Improve installation and disassembly efficiency:

[0018] Through the cooperation of structures such as back panel, support plate and adjustment components, the back panel can be quickly installed and disassembled. During installation, multiple electrical components can be installed on multiple electrical racks on a back panel to form an electrical module. Then the entire electrical module can be quickly installed into the cabinet. During disassembly, the electrical module can also be quickly removed from the cabinet for maintenance, which greatly reduces the time operators spend in the cabinet and significantly improves the efficiency of installation and disassembly.

[0019] Optimize equipment maintenance process:

[0020] When an electrical module malfunctions, it can be quickly removed from the cabinet for inspection or replacement without requiring extensive troubleshooting and repair of the entire cabinet, greatly shortening troubleshooting time. At the same time, this modular design also facilitates equipment upgrades and expansions; simply add or replace the corresponding electrical modules as needed, improving the equipment's flexibility and scalability. Attached Figure Description

[0021] Figure 1 This is a schematic front view of the structure of this utility model;

[0022] Figure 2 for Figure 1 A schematic cross-sectional view of the structure along the AA direction;

[0023] Figure 3 This is a schematic diagram of the structure of the adjustment component of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the arc-shaped baffle of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the adjusting wrench of this utility model;

[0026] Figure 6 This is a structural schematic diagram of the cross-section at the torsion shaft of this utility model.

[0027] In the diagram: 1 Cabinet, 2 Support plate, 3 Adjustment assembly, 31 Long strip hole, 32 Horizontal plate, 33 Internal threaded sleeve, 34 External threaded pipe, 4 Back plate, 5 Electrical frame, 6 Connecting rod, 7 Adjustment wrench, 71 Handwheel, 72 Torque shaft, 73 Key bar, 8 Through slot, 9 Pin, 10 Rotary joint, 11 Snap ring, 12 Arc baffle, 13 Barb. Detailed Implementation

[0028] 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.

[0029] Example 1:

[0030] Please see Figure 1 and Figure 2 This utility model provides a PLC cabinet with an auxiliary structure, including a cabinet body 1. A cabinet door is hinged to the front of the cabinet body 1. When the cabinet door is closed, it can form a complete protective space with the cabinet body 1, which protects the electrical components installed inside. The above is the prior art and will not be described in detail.

[0031] A support plate 2 is fixedly installed on the rear interior side of the cabinet 1 by screws. The screws allow a gap between the support plate 2 and the rear interior side of the cabinet 1, which facilitates the vertical installation of the support plate 2.

[0032] The front side of the support plate 2 is provided with several back plates 4 from top to bottom. The back plates 4 are vertically arranged to provide an installation base for other components. The front side of each back plate 4 is provided with several electrical racks 5 from top to bottom. The electrical racks 5 are horizontally arranged to provide a connection base for electrical components.

[0033] Connecting rods 6 are installed at the four rear corners of the back plate 4 via rotating joints 10. The rotating joint 10 is an existing component consisting of two rotating seats connected by hinges, which can realize the swinging action of the connecting rods 6.

[0034] The rear end of each connecting rod 6 is provided with a slot, and the slots on the left and right connecting rods 6 are arranged opposite to each other. The support plate 2 is provided with a through groove 8 for engaging the slot. When the slot engages with the through groove 8, the position of the back plate 4 can be fixed. Conversely, when the slot separates from the through groove 8, the back plate 4 can be quickly disassembled.

[0035] Pins 9 are rotatably mounted between the connecting rods 6 on the same side. An adjustment assembly 3 for connecting the pins 9 is installed on the rear side of the back plate 4. The adjustment assembly 3 is used to move the two pins 9 in opposite directions (towards or away from each other), thereby realizing the relative swing of the two sets of connecting rods 6 on the left and right.

[0036] Please see Figure 3 and Figure 4The adjusting assembly 3 includes a horizontal plate 32, an internal threaded sleeve 33, and an external threaded tube 34. Both ends of the horizontal plate 32 are provided with elongated holes 31, and pins 9 are respectively located in the elongated holes 31. The external threaded tube 34 is rotatably installed on the upper side of the horizontal plate 32 through a bearing seat. One end of the internal threaded sleeve 33 is screwed onto the external threaded tube 34, and the other end of the internal threaded sleeve 33 is fixedly assembled with the back plate 4.

[0037] When the external threaded tube 34 is rotated, the external threaded tube 34 will move along the axial direction of the internal threaded sleeve 33, thereby driving the horizontal plate 32 to move closer to or away from the back plate 4 via the bearing seat, and maintaining a parallel relationship with the back plate 4, so that the pin 9 moves along the elongated hole 31, driving the connecting rods 6 on the left and right sides to swing.

[0038] The two elongated holes 31 are symmetrically and obliquely arranged, that is, the distance between the ends of the elongated holes 31 near the back plate 4 is less than the distance between the ends of the elongated holes 31 near the support plate 2, forming a figure-eight shape. When the horizontal plate 32 moves away from the back plate 4, the pins 9 on the left and right sides will move closer to each other along the elongated holes 31, so that the rear ends of the connecting rod 6 move closer to each other; while when the horizontal plate 32 moves closer to the back plate 4, the pins 9 on the left and right sides will move away from each other along the elongated holes 31, so that the rear ends of the connecting rod 6 move away from each other, until they are perpendicular to the back plate 4.

[0039] Each pin 9 is fitted with two retaining springs 11 through a slot. The horizontal plate 32 is located between the two retaining springs 11. The retaining springs 11 are used to limit the two ends of the horizontal plate 32 to prevent the horizontal plate 32 from swinging around the external threaded tube 34, but do not limit the translational movement of the horizontal plate 32, thus ensuring the power transmission on the horizontal plate 32.

[0040] A barb 13 is provided at the end of the connecting rod 6 away from the rotating joint 10. An arc-shaped baffle 12 is also fixedly installed on the side wall of the connecting rod 6, forming a groove between the arc-shaped baffle 12 and the barb 13. The size of the arc-shaped baffle 12 is larger than that of the through groove 8. When the barb 13 enters the through groove 8 for installation, the arc-shaped baffle 12 can block the front side of the through groove 8 for limiting, so that the groove can be more easily aligned with the through groove 8. Moreover, the center of the arc-shaped baffle 12 coincides with the swing center of the rotating joint 10, so that the arc-shaped baffle 12 swings more smoothly with the connecting rod 6.

[0041] Example 2:

[0042] Please see Figure 5 and Figure 6 This utility model provides another PLC cabinet with an auxiliary structure, including all the technical features of Embodiment 1, with the following further added technical features:

[0043] The device includes an adjusting wrench 7, a back plate 4 with a through hole, the adjusting wrench 7 passing through the through hole and being inserted into the external threaded tube 34. The adjusting wrench 7 includes a handwheel 71 and a torque shaft 72 fixedly installed together. A key bar 73 is fixedly installed on the circumferential side of the torque shaft 72. A keyway for inserting the key bar 73 is provided on the inner wall of the external threaded tube 34.

[0044] After the torque shaft 72 extends into the external threaded tube 34, the key bar 73 is inserted into the corresponding keyway. After turning the handwheel 71, the torque can be transmitted through the cooperation of the key bar 73 and the keyway, thereby rotating the external threaded tube 34.

[0045] The number of key bars 73 is three, arranged in a circle, and the cross-sectional shape of each key bar 73 is different, such as triangle, rectangle and trapezoid, or other shapes can be used. The angle between adjacent key bars 73 is also different, such as 130°, 60° and 170°, or other angles can be used. This improves the uniqueness of the torque shaft 72 connection to a certain extent and avoids arbitrary adjustment by non-operators.

[0046] The working principle will now be explained using Example 2:

[0047] When installing related electrical components, the operation can be carried out externally to expand the operating space. That is, multiple electrical racks 5 on a back plate 4 are used to install components to form an electrical module. After completion, the adjusting wrench 7 is inserted into the external threaded tube 34 for later use. At this time, the rear ends of the connecting rods 6 on the left and right sides are located in positions close to each other to facilitate alignment and entry into the through groove 8.

[0048] Then transfer the back panel 4 and the installed electrical components into the cabinet 1. The arc-shaped baffle 12 abuts against the through slot 8. At this time, the four slots are aligned with the through slot 8. Rotate the external threaded tube 34 counterclockwise. The external threaded tube 34 moves forward along the internal threaded sleeve 33, so that the two pins 9 move away from each other along the elongated hole 31 until they are restored to a perpendicular relationship with the back panel 4, so that the slots are engaged with the through slot 8. Pull out the adjusting wrench 7. The amount of operation of multiple electrical modules in the cabinet 1 is greatly reduced.

[0049] When disassembly and maintenance are required, the above operation can be repeated. First, the electrical modules on the corresponding back panel 4 are disassembled, and the maintenance is completed outside the cabinet 1.

[0050] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0051] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A PLC cabinet with auxiliary structure, comprising a cabinet body (1), characterized in that: A support plate (2) is fixedly installed on the rear side of the cabinet (1). Several back plates (4) are arranged from top to bottom on the front side of the support plate (2). The back plates (4) are arranged vertically. Several electrical racks (5) are arranged from top to bottom on the front side of each back plate (4). The electrical racks (5) are arranged horizontally. The back plate (4) has connecting rods (6) installed at the four rear corners via rotating joints (10). The rear ends of the connecting rods (6) are provided with slots. The slots on the connecting rods (6) on the left and right sides are arranged opposite to each other. The support plate (2) has through slots (8) for engaging the slots. A pin (9) is rotatably mounted between the connecting rods (6) on the same side, and an adjustment assembly (3) for connecting the pin (9) is mounted on the rear side of the back plate (4).

2. The PLC cabinet with auxiliary structure according to claim 1, characterized in that: The adjustment assembly (3) includes a horizontal plate (32), an internal threaded sleeve (33), and an external threaded tube (34). Both ends of the horizontal plate (32) are provided with elongated holes (31), and the pins (9) are located in the elongated holes (31). The external threaded tube (34) is rotatably installed on the upper side of the horizontal plate (32) through a bearing seat. One end of the internal threaded sleeve (33) is screwed onto the external threaded tube (34), and the other end of the internal threaded sleeve (33) is fixedly assembled with the back plate (4).

3. The PLC cabinet with auxiliary structure according to claim 2, characterized in that: The elongated holes (31) at both ends are symmetrically and inclined, that is, the distance between the ends of the elongated holes (31) near the back plate (4) is less than the distance between the ends of the elongated holes (31) near the support plate (2).

4. The PLC cabinet with auxiliary structure according to claim 2, characterized in that: Each of the pins (9) is fitted with two retaining rings (11), and the cross plate (32) is located between the two retaining rings (11).

5. The PLC cabinet with auxiliary structure according to claim 1, characterized in that: The end of the connecting rod (6) away from the rotating joint (10) is provided with a barb (13), and an arc-shaped baffle (12) is also fixedly installed on the side wall of the connecting rod (6), forming a groove between the arc-shaped baffle (12) and the barb (13).

6. The PLC cabinet with auxiliary structure according to claim 1, characterized in that: The device includes an adjusting wrench (7), and the back plate (4) has a through hole. The adjusting wrench (7) passes through the through hole and is inserted into the external threaded tube (34). The adjusting wrench (7) includes a handwheel (71) and a torque shaft (72) fixedly installed together. A key bar (73) is fixedly installed on the circumferential side of the torque shaft (72). The inner wall of the external threaded tube (34) has a keyway for inserting the key bar (73).

7. The PLC cabinet with auxiliary structure according to claim 6, characterized in that: The number of key bars (73) is three in a circular arrangement, and the cross-sectional shape of each key bar (73) is different, and the angle between adjacent key bars (73) is also different.

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