Protection device for PLC control cabinet

Abstract

The utility model discloses a protective device for a PLC control cabinet, which relates to the technical field of control cabinets and comprises a control cabinet main body, a box door hinged to the surface of one side of the control cabinet main body and a heat dissipation assembly arranged on the surface of the control cabinet main body, and further comprises a transfer isolation unit and a support closing unit which are arranged in the control cabinet main body, the transfer isolation unit comprises a transverse screw rod, a support block, a transverse guide rod, a support frame and an electrical component mounting plate; the supporting and sealing unit comprises a connecting rod, a sealing cover plate, a telescopic rod and a supporting block. According to the utility model, the rectangular through groove on the surface of one side, far away from the box door, of the control cabinet main body can be matched with the support frame to translate and be called out of the control cabinet main body, so that personnel can overhaul electrical components on two opposite sides of the support frame, and after the box door is opened, the personnel can conveniently maintain heat dissipation components in the hollow control cabinet main body; the maintenance space of electrical elements and a heat dissipation structure is flexibly expanded, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of control cabinets, in particular to a protective device for a PLC control cabinet. Background Art

[0002] PLC control cabinet refers to programmable control cabinet, control cabinet refers to a complete set of control cabinet, which is an electrical cabinet that can realize the control of motors and switches. PLC control cabinet has protection functions such as overload, short circuit and phase loss protection. PLC integrated control cabinet has protection functions such as overload, short circuit and phase loss protection. The existing PLC frequency conversion control cabinet has poor heat dissipation performance and cannot discharge the heat generated by the distribution cabinet in time during work, which can easily cause damage to electrical components in the distribution cabinet, increase maintenance costs and reduce practical performance.

[0003] The disclosure (announcement) number is CN215934120U, which discloses a PLC frequency conversion control cabinet with a video monitoring function, including a box body. The motors in the first heat dissipation mechanism and the second heat dissipation mechanism drive the fan blades to rotate to blow air and dissipate heat to the electrical components, thereby greatly improving the heat dissipation effect of the PLC frequency conversion control cabinet. By setting a filter plate, dust in the air is prevented from entering the PLC frequency conversion control cabinet while the PLC frequency conversion control cabinet is dissipating heat, causing damage to the internal electrical components. By setting a first placement plate and a second placement plate to slide on the first vertical rod and the second vertical rod, electrical components of different volumes within a certain range can be installed, thereby expanding the practicality of the device. By setting a camera body, the periphery of the PLC frequency conversion control cabinet can be monitored, thereby improving the safety of the use of the PLC frequency conversion control cabinet. By setting a protective shed, the PLC frequency conversion control cabinet can be shaded and rainproofed, thereby further improving the safety protection of the PLC frequency conversion control cabinet when in use.

[0004] Although the above scheme provides protection for the PLC control cabinet by setting up a heat dissipation structure and a rainproof structure, many electrical components are tightly assembled with the heat dissipation structure after being installed and fixed inside the control cabinet by bolts. Personnel can only open the door of the box to inspect the electrical components on one side, and the equipment has limited inspection space for the electrical components and the heat dissipation structure. For this reason, we propose a protective device for the PLC control cabinet. Utility Model Content

[0005] The main purpose of the utility model is to provide a protective device for a PLC control cabinet, which solves the problem of limited maintenance space for electrical components and heat dissipation structures of the equipment by arranging a movable isolation unit.

[0006] To solve the above technical problems, the present utility model is realized through the following technical solutions: A protection device for a PLC control cabinet, comprising a control cabinet main body, a cabinet door hinged to one side surface of the control cabinet main body, and a heat dissipation component arranged on the surface of the control cabinet main body, further comprising: a transfer isolation unit and a support and enclosure unit arranged inside the control cabinet main body;

[0007] The transfer isolation unit includes a horizontal lead screw, a support block, a horizontal guide rod, a support frame, and an electrical component mounting plate. At the corners of the inner wall of the bottom surface of the control cabinet main body, two strip-shaped installation grooves are symmetrically opened. The horizontal lead screw is movably arranged on one of the strip-shaped installation grooves. There are two support blocks in total, and one of the support blocks is threadedly connected to the horizontal lead screw. The horizontal guide rod is fixedly arranged on the other strip-shaped installation groove and movably penetrates through the other support block. The support frame is in a "U" shape, and one side bottom surface thereof is connected to the tops of the two support blocks. The electrical component mounting plate is fixedly arranged on the inner wall of the support frame. A rectangular through groove with a position and size matching the position and size of the support frame is opened on the surface of the control cabinet main body away from the cabinet door. One end of the horizontal lead screw that extends movably outside the control cabinet main body is fixedly provided with a turntable;

[0008] The support and enclosure unit includes a connecting rod, a closing cover plate, a telescopic rod, and a support block. One end of the connecting rod is connected to the side wall of the support frame and is located inside the rectangular through groove. The closing cover plate is fixedly arranged at the other end of the connecting rod and is located outside the control cabinet main body. A rectangular sealing ring is fixedly arranged on one side surface of the closing cover plate. The telescopic rod is fixedly arranged at the bottom corner of the control cabinet main body. The support block is fixedly arranged on the bottom surface of the closing cover plate, and the telescopic end of the telescopic rod is fixedly embedded in the support block.

[0009] Preferably, there are several electrical component mounting plates and they are arranged at intervals.

[0010] Preferably, there are two telescopic rods and they are symmetrically arranged on the vertical center horizontal plane of the control cabinet main body. The support blocks are arranged in one-to-one correspondence with the telescopic rods.

[0011] Preferably, the heat dissipation component includes a bearing cylinder, a fan, and a filter screen. The bearing cylinder is fixedly embedded in the top surface of the control cabinet main body. The fan is fixedly installed inside the bearing cylinder. An air inlet hole is opened on the top surface of the bearing cylinder. The filter screen is fixedly embedded at the center of the bottom surface of the control cabinet main body.

[0012] Preferably, columns are fixedly arranged at the corners of the top surface of the control cabinet main body, and a protective shed is fixedly arranged at the top ends of the columns.

[0013] Preferably, feet are fixedly arranged at the corners of the bottom surface of the control cabinet main body.

[0014] Compared with the prior art, the protection device for a PLC control cabinet of the present utility model has the following beneficial effects:

[0015] 1. In the present utility model, by setting the transfer isolation unit, the support frame in a "U" shape can cooperate with several electrical component mounting plates to assemble electrical components. By holding the turntable, the horizontal lead screw can be rotated forward and backward on the control cabinet main body. One of the supporting blocks threadedly connected to the horizontal lead screw can drive the "U"-shaped support frame to translate and adjust under the action of force, and the other supporting block can slide and translate on the horizontal guide rod to cooperate with the movement of the support frame and provide preliminary auxiliary support for it. The rectangular through groove on the surface of the control cabinet main body away from the cabinet door can cooperate with the support frame to translate out of the control cabinet main body. Personnel can repair the electrical components on the relative two sides of the support frame. After opening the cabinet door, it is also convenient to maintain the heat dissipation components in the open control cabinet main body. The equipment can flexibly expand the maintenance space for electrical components and heat dissipation structures, and the operation is convenient.

[0016] 2. In the present utility model, by setting the support and closing unit, after the support frame is transferred and retracted into the control cabinet main body, the closing cover plate fixed to the support frame by the connecting rod can be close to and abut against the control cabinet main body. Finally, the rectangular sealing ring can cooperate with the closing cover plate to seal the rectangular through groove to prevent water vapor from entering. When the support frame is translated and adjusted, the support block and the telescopic rod fixed to the bottom surface of the closing cover plate can provide further auxiliary support for the support frame, and the telescopic rod can adjust the extension length to cooperate with the movement of the support frame and the closing cover plate. The equipment has high stability in transferring the support frame as the carrier of electrical components. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of a protection device for a PLC control cabinet of the present utility model;

[0019] Figure 2 It is a schematic side view structure diagram of a protection device for a PLC control cabinet of the present utility model;

[0020] Figure 3 For the present utility model Figure 2 It is a schematic cross-sectional structure diagram at A-A in

[0021] Figure 4 For the present utility model Figure 3 It is a schematic cross-sectional structure diagram at B-B in

[0022] Figure 5 The utility model is a front view structural schematic diagram of a protective device for a PLC control cabinet.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Control cabinet body;

[0025] 2. Mobilize the isolation unit; 201. Transverse screw rod; 202. Support block; 203. Transverse guide rod; 204. Support frame; 205. Electrical component mounting plate;

[0026] 3. Supporting closed unit; 301. Connecting rod; 302. Closed cover plate; 303. Telescopic rod; 304. Support block;

[0027] 4. Box door;

[0028] 5. heat dissipation component; 501. bearing cylinder; 502. fan; 503. filter;

[0029] 6. Protective shed;

[0030] 7. Support legs. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0032] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0034] As Figure 3 , Figure 4 and Figure 5 shown, a protection device for a PLC control cabinet includes a control cabinet main body 1, a cabinet door 4 hinged to one side surface of the control cabinet main body 1, and a heat dissipation component 5 arranged on the surface of the control cabinet main body 1. It further includes: a transfer isolation unit 2 and a support and enclosure unit 3 arranged inside the control cabinet main body 1;

[0035] The transfer isolation unit 2 includes a horizontal lead screw 201, a support block 202, a horizontal guide rod 203, a support frame 204, and an electrical component mounting plate 205. At the corners of the inner wall of the bottom surface of the control cabinet main body 1, two strip-shaped installation grooves are symmetrically opened. The horizontal lead screw 201 is movably arranged in one of the strip-shaped installation grooves. There are two support blocks 202 in total. One of the support blocks 202 is threadedly connected to the horizontal lead screw 201. The horizontal guide rod 203 is fixedly arranged in the other strip-shaped installation groove and movably penetrates through the other support block 202. The support frame 204 is in a "U" shape, and one side bottom surface of it is connected to the tops of the two support blocks 202. The electrical component mounting plate 205 is fixedly arranged on the inner wall of the support frame 204. A rectangular through groove with a position and size matching the position and size of the support frame 204 is opened on the surface of the control cabinet main body 1 away from the cabinet door 4;

[0036] The support and enclosure unit 3 includes a connecting rod 301, an enclosure cover plate 302, a telescopic rod 303, and a support block 304. One end of the connecting rod 301 is connected to the side wall of the support frame 204 and is located inside the rectangular through groove. The enclosure cover plate 302 is fixedly arranged at the other end of the connecting rod 301 and is located outside the control cabinet main body 1. And a rectangular sealing ring is fixedly arranged on one side surface of the enclosure cover plate 302. The telescopic rod 303 is fixedly arranged at the bottom corner of the control cabinet main body 1. The support block 304 is fixedly arranged on the bottom surface of the enclosure cover plate 302, and the telescopic end of the telescopic rod 303 is fixedly embedded in the support block 304.

[0037] Furthermore, there are several electrical component mounting plates 205 and they are arranged at intervals.

[0038] Furthermore, the heat dissipation component 5 includes a bearing cylinder 501, a fan 502, and a filter screen 503. The bearing cylinder 501 is fixedly embedded in the top surface of the control cabinet main body 1. The fan 502 is fixedly installed inside the bearing cylinder 501. An air inlet hole is opened on the top surface of the bearing cylinder 501. The filter screen 503 is fixedly embedded at the center of the bottom surface of the control cabinet main body 1.

[0039] Furthermore, columns are fixedly arranged at the corners of the top surface of the control cabinet main body 1, and a protective shed 6 is fixedly arranged at the top ends of the columns.

[0040] Furthermore, feet 7 are fixedly arranged at the corners of the bottom surface of the control cabinet main body 1.

[0041] By moving the isolation unit 2, the equipment can flexibly expand the maintenance space for electrical components and the heat dissipation structure, making the operation convenient. Embodiment

[0042] Such as Figure 1 、 Figure 2 、 Figure 3 And Figure 5 As shown, a protection device for a PLC control cabinet includes a control cabinet main body 1, a cabinet door 4 hinged on one side surface of the control cabinet main body 1, and a heat dissipation component 5 arranged on the surface of the control cabinet main body 1. It also includes: a mobilization isolation unit 2 and a support and enclosure unit 3 arranged inside the control cabinet main body 1;

[0043] The mobilization isolation unit 2 includes a horizontal lead screw 201, a support block 202, a horizontal guide rod 203, a support frame 204, and an electrical component mounting plate 205. At the corners of the inner wall of the bottom surface of the control cabinet main body 1, two strip-shaped installation grooves are symmetrically opened. The horizontal lead screw 201 is movably arranged in one of the strip-shaped installation grooves. There are two support blocks 202 in total. One of the support blocks 202 is threadedly connected to the horizontal lead screw 201. The horizontal guide rod 203 is fixedly arranged in the other strip-shaped installation groove and movably penetrates through the other support block 202. The support frame 204 is in a "U" shape, and one side bottom surface of it is connected to the tops of the two support blocks 202. The electrical component mounting plate 205 is fixedly arranged on the inner wall of the support frame 204. A rectangular through groove with a position and size matching the position and size of the support frame 204 is opened on the surface of the control cabinet main body 1 away from the cabinet door 4;

[0044] The support and enclosure unit 3 includes a connecting rod 301, a closing cover plate 302, a telescopic rod 303, and a support block 304. One end of the connecting rod 301 is connected to the side wall of the support frame 204 and is located inside the rectangular through groove. The closing cover plate 302 is fixedly arranged at the other end of the connecting rod 301 and is located outside the control cabinet main body 1. And a rectangular sealing ring is fixedly arranged on one side surface of the closing cover plate 302. The telescopic rod 303 is fixedly arranged at the bottom corner of the control cabinet main body 1. The support block 304 is fixedly arranged on the bottom surface of the closing cover plate 302, and the telescopic end of the telescopic rod 303 is fixedly embedded in the support block 304.

[0045] Furthermore, there are two telescopic rods 303 in total, which are symmetrically arranged on the vertical center horizontal plane of the control cabinet main body 1. The support blocks 304 are arranged in one-to-one correspondence with the telescopic rods 303.

[0046] Furthermore, the heat dissipation component 5 includes a bearing cylinder 501, a fan 502, and a filter screen 503. The bearing cylinder 501 is fixedly embedded in the top surface of the control cabinet main body 1. The fan 502 is fixedly installed inside the bearing cylinder 501. An air inlet hole is opened on the top surface of the bearing cylinder 501. The filter screen 503 is fixedly embedded at the center of the bottom surface of the control cabinet main body 1.

[0047] Further, struts are fixedly arranged at the corners of the top surface of the control cabinet main body 1, and a protective shed 6 is fixedly arranged at the top ends of the struts.

[0048] Further, feet 7 are fixedly arranged at the corners of the bottom surface of the control cabinet main body 1.

[0049] Through the support and closing unit 3, the equipment has high mobilization stability for the support frame 204 serving as a carrier of electrical components.

[0050] The working principle of the present utility model is as follows:

[0051] The support frame 204 in a "U" shape cooperates with several electrical component mounting plates 205 to assemble electrical components. By holding the turntable to control the forward and reverse rotation of the transverse lead screw 201 on the control cabinet main body 1, one of the supporting blocks 202 threadedly connected to the transverse lead screw 201 drives the support frame 204 to translate and adjust under the action of force. The other supporting block 202 slides and translates on the transverse guide rod 203 to cooperate with the mobilization of the support frame 204 and provide preliminary auxiliary support for it. The rectangular through groove on the surface of the control cabinet main body 1 away from the box door 4 cooperates with the support frame 204 to translate out of the control cabinet main body 1. Personnel can repair the electrical components on the opposite sides of the support frame 204. After opening the box door 4, it is also convenient to maintain the heat dissipation component 5 in the open control cabinet main body 1. After the support frame 204 is mobilized and retracted into the control cabinet main body 1, the closing cover plate 302 fixed on the support frame 204 by the connecting rod 301 approaches and abuts against the control cabinet main body 1. Finally, the rectangular sealing ring cooperates with the closing cover plate 302 to seal the rectangular through groove to prevent water vapor from entering. When the support frame 204 translates and adjusts, the support block 304 and the telescopic rod 303 fixed on the bottom surface of the closing cover plate 302 provide further auxiliary support for the support frame 204, and the telescopic rod 303 adjusts the extension length to cooperate with the mobilization of the support frame 204 and the closing cover plate 302.

[0052] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A protective device for a PLC control cabinet, comprising a control cabinet body (1), a cabinet door (4) hinged on a side surface of the control cabinet body (1), and a heat dissipation component (5) arranged on the surface of the control cabinet body (1), characterized in that: Also included are: A transfer isolation unit (2) and a support and enclosure unit (3) disposed inside the control cabinet main body (1); The transfer isolation unit (2) includes a transverse lead screw (201), a support block (202), a transverse guide rod (203), a support frame (204), and an electrical component mounting plate (205). At the corners of the inner wall of the bottom surface of the control cabinet main body (1), two strip-shaped mounting grooves are symmetrically provided. The transverse lead screw (201) is movably disposed in one of the strip-shaped mounting grooves. There are two support blocks (202) in total. One of the support blocks (202) is threadedly connected to the transverse lead screw (201). The transverse guide rod (203) is fixedly disposed in the other strip-shaped mounting groove and movably penetrates through the other support block (202). The support frame (204) is in a "U" shape, and the bottom surface of one side thereof is connected to the tops of the two support blocks (202). The electrical component mounting plate (205) is fixedly disposed on the inner wall of the support frame (204). On the surface of the control cabinet main body (1) away from the cabinet door (4), a rectangular through groove is provided with a position and size matching the position and size of the support frame (204); The support and enclosure unit (3) includes a connecting rod (301), an enclosure cover plate (302), a telescopic rod (303), and a support block (304). One end of the connecting rod (301) is connected to the side wall of the support frame (204) and is located inside the rectangular through groove. The enclosure cover plate (302) is fixedly disposed at the other end of the connecting rod (301) and is located outside the control cabinet main body (1). A rectangular sealing ring is fixedly disposed on one side surface of the enclosure cover plate (302). The telescopic rod (303) is fixedly disposed at the bottom corner of the control cabinet main body (1). The support block (304) is fixedly disposed on the bottom surface of the enclosure cover plate (302), and the telescopic end of the telescopic rod (303) is fixedly embedded in the support block (304).

2. A protective device for a PLC control cabinet according to claim 1, characterized in that: There are several electrical component mounting plates (205) provided at intervals.

3. The protective device for a PLC control cabinet according to claim 1, characterized in that: There are two telescopic rods (303) in total, which are symmetrically disposed on the vertical center horizontal plane of the control cabinet main body (1). The support blocks (304) are arranged in one-to-one correspondence with the telescopic rods (303).

4. The protective device for a PLC control cabinet according to claim 1, characterized in that: The heat dissipation component (5) includes a load-bearing cylinder (501), a fan (502), and a filter screen (503). The load-bearing cylinder (501) is fixedly embedded in the top surface of the control cabinet main body (1). The fan (502) is fixedly installed inside the load-bearing cylinder (501). An air inlet hole is provided on the top surface of the load-bearing cylinder (501). The filter screen (503) is fixedly embedded at the center of the bottom surface of the control cabinet main body (1).

5. The protective device for a PLC control cabinet according to claim 1, characterized in that: At the corners of the top surface of the control cabinet main body (1), columns are fixedly provided, and a protective shed (6) is fixedly provided at the top ends of the columns.

6. The protective device for a PLC control cabinet according to claim 1, characterized in that: At the corners of the bottom surface of the control cabinet main body (1), feet (7) are fixedly provided.

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