A PLC control box that is easy to maintain

Abstract

This utility model relates to the field of PLC control box technology, specifically a PLC control box that is easy to maintain. It includes a box body, with several short slide rails fixedly connected at equal intervals on both inner side walls of the box body. Each of the short slide rails has a groove near its outer end on its top surface. Each of the two inner side walls of the box body has a sliding groove. A mounting frame is also included, comprising an outer frame. In this utility model, the coordinated arrangement of the short slide rails, outer frame, slider one, long slide rail, baffle, slider two, and sliding groove one allows the long slide rail to be pushed downwards along the sliding groove one, causing it to be offset from the short slide rails. The baffle blocks the front end of the short slide rails, confining the outer frame inside the box body and ensuring the stability and safety of the electrical components. When maintenance is required, the long slide rail is pushed upwards to align with the short slide rails, forming a complete track. At this point, the outer frame can be moved towards the box door, providing ample maintenance space for personnel.

Description

Technical Field

[0001] This utility model relates to the field of PLC control box technology, specifically a PLC control box that is easy to maintain. Background Technology

[0002] A PLC control box is an integrated control system with a programmable logic controller (PLC) as its core. It can control motors and switches and has protection functions such as overload, short circuit, and phase loss protection. It is an ideal choice for industrial automation control systems and can be applied to automated production control systems in industries such as robotics, automobiles, machine tools, metallurgy, smelting, chemicals, ports, water conservancy, power plants, meteorology, petroleum, and electronics, meeting users' requirements for production efficiency.

[0003] Traditional PLC control box designs often fix electrical components directly inside the box. Due to the compact internal structure and limited space of the control box, maintenance personnel find it difficult to operate within the confined space during maintenance, affecting maintenance efficiency and quality. This not only wastes time and effort but also easily damages electrical components and connecting wires. Utility Model Content

[0004] The purpose of this invention is to provide a PLC control box that is easy to maintain, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A convenient PLC control box includes:

[0007] The box body has several short slide rails fixedly connected at equal distances on both inner side walls. The top surface of each short slide rail near the outer end is provided with a groove. The two inner side walls of the box body are provided with a sliding groove.

[0008] The mounting frame includes an outer frame, which is disposed inside the box. Several sliders are fixedly connected at equal distances to the two outer side walls of the outer frame. The sliders are slidably connected to several short slide rails. Several brackets are fixedly connected at equal distances inside the outer frame.

[0009] Two movable frames are provided, one on each of the two inner side walls of the housing. Each movable frame includes several long slide rails arranged at equal intervals. Each pair of adjacent long slide rails is fixedly connected by two connecting rods. Each of the long slide rails has a baffle fixedly connected to its end near the short slide rail. The baffle fits into a groove. Each of the long slide rails has a slider two fixedly connected to its back. The slider two slides are slidably connected to a slide groove. The bottom surface of the bottommost long slide rail has two fixing rods fixedly connected. The bottom ends of the two fixing rods are fixedly connected to a connecting plate. The top surface of the connecting plate is screwed with a fastening knob. The bottom surface of the connecting plate has two return springs two fixedly connected symmetrically. The bottom ends of the two return springs two are fixedly connected to a mating plate. The top surface of the mating plate has a threaded hole that mates with the fastening knob. The side wall of the mating plate is fixedly connected to the inner side wall of the housing.

[0010] Preferably, the front end of the box is connected to a door via a hinge, and the surface of the door is provided with a mounting groove.

[0011] Furthermore, each of the brackets has a number of grooves on its surface.

[0012] Furthermore, the inner bottom surface of the box has two symmetrical sliding grooves.

[0013] Furthermore, the bottom surface of the outer frame is symmetrically and fixedly connected with two support rods, and the bottom ends of the two support rods are slidably connected to two sliding grooves respectively.

[0014] Furthermore, a rectangular ring is fixedly connected to the top surface of the uppermost long slide rail in both of the movable frames.

[0015] Furthermore, the two inner sidewalls of the housing are fixedly connected to fasteners near the top. Each fastener includes a mounting block, the top side of which is fixedly connected to the inner sidewall of the housing. The inner sidewall of the mounting block has an insertion groove, and a snap-fit ​​block is slidably connected in the insertion groove. A return spring is fixedly connected between the inner wall of the snap-fit ​​block and the inner wall of the insertion groove. A round rod is fixedly connected to the inner sidewall of the snap-fit ​​block, and the other end of the round rod extends through the outer sidewall of the mounting block and is fixedly connected to a pull ring.

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

[0017] By fixing several short slide rails to both inner side walls of the enclosure, and providing several sliders that slide in conjunction with the short slide rails on the side walls of the outer frame, and through the coordinated arrangement of the long slide rail, baffle, slider, and slide groove, when the outer frame moves to the innermost part of the enclosure, the long slide rail can be pushed downwards along the slide groove to offset it from the short slide rails. The baffle then blocks the front end of the short slide rails, thus confining the outer frame inside the enclosure and ensuring the stability and safety of the electrical components. When maintenance is required, simply push the long slide rail upwards to align it with the short slide rails, forming a complete track. At this point, the outer frame can move towards the enclosure door along the short and long slide rails, providing ample maintenance space for maintenance personnel. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a PLC control box that is easy to maintain according to this utility model;

[0019] Figure 2 This is a schematic diagram of the box structure in this utility model;

[0020] Figure 3 This is a schematic diagram of the mounting bracket structure in this utility model;

[0021] Figure 4 This is a schematic diagram of the movable frame structure in this utility model;

[0022] Figure 5 This is a schematic diagram of the rear view of the movable frame in this utility model;

[0023] Figure 6 This is a schematic diagram of the cross-sectional structure of the fixing component in this utility model;

[0024] Figure 7 This is an enlarged schematic diagram of the structure of area A in this utility model.

[0025] In the diagram: 100, Box body; 110, Short slide rail; 1101, Groove; 120, Slide groove one; 130, Fixing component; 131, Mounting block; 1311, Insertion groove; 132, Snap-fit ​​block; 133, Round rod; 134, Pull ring; 135, Return spring one; 140, Slide groove two; 150, Box door; 151, Mounting groove; 200, Mounting bracket; 210, Outer frame; 211, Slider one; 220, Bracket; 221, Cable trough; 230, Support rod; 300, Moving frame; 310, Long slide rail; 311, Baffle; 312, Slider two; 320, Connecting rod; 330, Fixing rod; 340, Connecting plate; 350, Return spring two; 360, Connecting plate; 370, Fastening knob; 380, Rectangular ring. Detailed Implementation

[0026] 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.

[0027] Example 1

[0028] Please see Figure 1-7 In this embodiment of the utility model, a PLC control box that is easy to maintain includes a box body 100. A plurality of short slide rails 110 are fixedly connected at equal intervals to the two inner side walls of the box body 100. A groove 1101 is formed on the top surface of each of the short slide rails 110 near its outer end. A sliding groove 120 is formed on each of the two inner side walls of the box body 100. A mounting bracket 200 is provided inside the box body 100. The mounting bracket 200 includes an outer frame 210. Two outer... A plurality of sliders 211 are fixedly connected at equal intervals on the side walls. Each slider 211 is slidably connected to a plurality of short slide rails 110. A plurality of brackets 220 are fixedly connected at equal intervals inside the outer frame 210. A movable frame 300 is provided on each of the two inner side walls of the housing 100. Each movable frame 300 includes a plurality of long slide rails 310 arranged at equal intervals. Each pair of adjacent long slide rails 310 is fixedly connected by two connecting rods 320. Each of the short slide rails 10 is fixedly connected to a baffle 311 at its end, the baffle 311 fitting into the groove 1101. Each of the long slide rails 310 has a slider 312 fixedly connected to its back, the slider 312 slidingly connected to the groove 120. The bottom surface of the lowest long slide rail 310 has two fixing rods 330 fixedly connected, the bottom ends of the two fixing rods 330 fixedly connected to a connecting plate 340, and the top surface of the connecting plate 340 screwed with a fastening knob 37. 0. Two return springs 350 are symmetrically fixedly connected to the bottom surface of the connecting plate 340. The bottom ends of the two return springs 350 are fixedly connected to a docking plate 360. The top surface of the docking plate 360 ​​is provided with a threaded hole that cooperates with the fastening knob 370. The side wall of the docking plate 360 ​​is fixedly connected to the inner side wall of the housing 100. The front end of the housing 100 is rotatably connected to a door 150 through a hinge. The surface of the door 150 is provided with a mounting groove 151 for mounting a display screen.

[0029] Specifically, the internal dimensions of the long slide rail 310 are the same as those of the short slide rail 110. Supported by the second return spring 350, several long slide rails 310 are flush with several short slide rails 110. During maintenance, the outer frame 210 can be pulled, and the slider 211 moves along the short slide rails 110 and the long slide rails 310 until it reaches the front end of the housing 100, facilitating maintenance by the operator. After maintenance, the outer frame 210 is pushed back into the housing 100, and the moving frame 300 is pressed down, causing several long slide rails 310 to slide along the groove. 120 moves downward, causing the long slide rail 310 and the short slide rail 110 to be misaligned. The baffle 311 is fixedly connected to the top surface of the end of the long slide rail 310, perpendicular to the long slide rail 310. When the moving frame 300 moves downward, several baffles 311 respectively engage with several grooves 1101, blocking the front end of the short slide rail 110 and fixing the outer frame 210 inside the box 100. At this time, the fastening knob 370 can be rotated to fix the connecting plate 340 and the docking plate 360 ​​together, so that the position of the moving frame 300 remains unchanged.

[0030] like Figure 2-3 As shown, in this embodiment, several grooves 221 are provided on the surface of several brackets 220, two sliding grooves 140 are symmetrically provided on the inner bottom surface of the box body 100, and two support rods 230 are symmetrically fixedly connected to the bottom surface of the outer frame 210. The bottom ends of the two support rods 230 are slidably connected to the two sliding grooves 140 respectively.

[0031] In this embodiment, the support rod 230 is disposed on the bottom surface of the outer frame 210, which can support the outer frame 210. The bottom of the support rod 230 is slidably connected to the slide groove 140, which enhances the stability of the outer frame 210 moving along the short slide rail 110 and the long slide rail 310. Several wire grooves 221 provided on the surface of the bracket 220 facilitate the insertion and gathering of wires of various electrical components.

[0032] Example 2

[0033] Based on Embodiment 1, several long slide rails 310 are prone to wobbling because they are only supported by two return springs 350. In order to maintain stability after the moving frame 300 moves in Embodiment 1,

[0034] like Figure 4-6As shown, in this embodiment, the top surface of the uppermost long slide rail 310 of the two movable frames 300 is fixedly connected with a rectangular ring 380. Fixing members 130 are fixedly connected to the two inner sidewalls of the housing 100 near the top. Each fixing member 130 includes a mounting block 131, the top side of which is fixedly connected to the inner sidewall of the housing 100. An insertion groove 1311 is provided on the inner sidewall of the mounting block 131, and a locking block 132 is slidably connected within the insertion groove 1311. A return spring 135 is fixedly connected between the inner wall of the locking block 132 and the inner wall of the insertion groove 1311. A round rod 133 is fixedly connected to the inner sidewall of the locking block 132, and a pull ring 134 is fixedly connected to the other end of the round rod 133 extending through the outer sidewall of the mounting block 131.

[0035] In practice, under the elastic force of the return spring 135, the locking block 132 extends outward into the insertion slot 1311. When maintenance is required, rotating the fastening knob 370 releases the fixing rod 330 from the top surface of the mating plate 360. The compressed return spring 350 then rebounds, pushing several long slide rails 310 upwards. The top surface of the rectangular ring 380 contacts the bottom surface of the locking block 132. Manually moving the moving frame 300 upwards causes the rectangular ring 380 to press against the locking block 132. The return spring 135 contracts, causing the locking block 132 to retract into the insertion slot 1311. When the long slide rails 310 move to be flush with the short slide rails 110, the locking block... The connecting block 132 corresponds to the hole in the middle of the rectangular ring 380. After the pressure is lost, the retaining spring 135 returns the retaining block 132 to extend outward, thereby engaging with the rectangular ring 380. This keeps the rectangular ring 380 in place, thus fixing the position of the movable frame 300 and preventing it from shaking. After maintenance, the outer frame 210 is pushed back to its original position, and then the pull ring 134 is pulled, causing the round rod 133 to drive the retaining block 132 to retract into the insertion slot 1311. At this time, the retaining block 132 no longer restricts the rectangular ring 380, and the movable frame 300 can be moved downward. The connecting plate 340 and the mating plate 360 ​​are then fixed by the fastening knob 370.

[0036] 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 in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] 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 control box that is easy to maintain, characterized in that, include: The box (100) has several short slide rails (110) fixedly connected at equal distances on both inner side walls. The top surface of the short slide rails (110) near the outer end is provided with a groove (1101). The two inner side walls of the box (100) are provided with a slide groove (120). Mounting bracket (200) includes an outer frame (210), which is located inside the housing (100). The two outer side walls of the outer frame (210) are fixedly connected with a number of sliders (211) at equal distances. The sliders (211) are slidably connected to the interior of a number of short slide rails (110). The interior of the outer frame (210) is fixedly connected with a number of brackets (220) at equal distances. Two movable frames (300) are provided, respectively installed on the two inner side walls of the housing (100). The movable frame (300) includes several long slide rails (310) arranged at equal intervals. Each pair of adjacent long slide rails (310) is fixedly connected by two connecting rods (320). Each of the long slide rails (310) has a baffle (311) fixedly connected to the end near the short slide rail (110). The baffle (311) fits into the groove (1101). Each of the long slide rails (310) has a slider two (312) fixedly connected to the back of each long slide rail (310). The slider two (312) is slidably connected to the slide groove one (120). Two fixing rods (330) are fixedly connected to the bottom surface of the bottom long slide rail (310). The bottom ends of the two fixing rods (330) are fixedly connected to a connecting plate (340). The top surface of the connecting plate (340) is screwed with a fastening knob (370). The bottom surface of the connecting plate (340) is symmetrically fixedly connected to two return springs (350). The bottom ends of the two return springs (350) are fixedly connected to a mating plate (360). The top surface of the mating plate (360) has a threaded hole that matches the fastening knob (370). The side wall of the mating plate (360) is fixedly connected to the inner side wall of the box (100).

2. The convenient-to-maintain PLC control box according to claim 1, characterized in that, The front end of the box (100) is connected to a door (150) via a hinge, and the surface of the door (150) is provided with a mounting groove (151).

3. The convenient-to-maintain PLC control box according to claim 1, characterized in that, Several brackets (220) have several grooves (221) on their surfaces.

4. The convenient-to-maintain PLC control box according to claim 1, characterized in that, Two sliding grooves (140) are symmetrically opened on the inner bottom surface of the box (100).

5. The convenient-to-maintain PLC control box according to claim 1, characterized in that, The bottom surface of the outer frame (210) is symmetrically connected to two support rods (230), and the bottom ends of the two support rods (230) are slidably connected to two sliding grooves (140).

6. The convenient-to-maintain PLC control box according to claim 1, characterized in that, A rectangular ring (380) is fixedly connected to the top surface of the uppermost long slide rail (310) of the two movable frames (300).

7. The convenient-to-maintain PLC control box according to claim 1, characterized in that, Two inner sidewalls of the housing (100) are fixedly connected to fasteners (130) near the top. The fasteners (130) include mounting blocks (131). The top side of the mounting blocks (131) is fixedly connected to the inner sidewall of the housing (100). The inner sidewall of the mounting blocks (131) is provided with a insertion groove (1311). A snap-fit ​​block (132) is slidably connected in the insertion groove (1311). A return spring (135) is fixedly connected between the inner wall of the snap-fit ​​block (132) and the inner wall of the insertion groove (1311). A round rod (133) is fixedly connected to the inner sidewall of the snap-fit ​​block (132). The other end of the round rod (133) extends through the outer sidewall of the mounting block (131) and is fixedly connected to a pull ring (134).

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