PLC protection device for automatic control engineering

Abstract

The utility model relates to the technical field of automatic control engineering, in particular to a PLC protection device for automatic control engineering, and aims to solve the problem that positioning of a PLC is difficult to release when the PLC is moved out of the protection device. The PLC protection device comprises a protection machine shell and a positioning mechanism, and the positioning mechanism is arranged in the protection machine shell; the positioning mechanism comprises a baffle arranged in the protection machine shell. Through the synergistic effect of the supporting plate, the limiting blocks and the limiting grooves, stable supporting can be provided for the carrier plate, it is ensured that the carrier plate can slide front and back smoothly, pulling-out and pulling-in operation of the PLC in the protection machine shell is achieved, and by means of mutual cooperation of the springs, the control plate and the guide plate, when the carrier plate moves out of the protection machine shell, the carrier plate can be pulled out and pulled out by means of the elastic force of the springs; when the PLC needs to be maintained, the guide plate is tightly attached to the control plate, the clamping plate can be gradually away from the PLC in the moving process of the carrier plate, clamping and fixing of the PLC are effectively relieved, workers can take the PLC conveniently, and great convenience is provided for maintenance work of the PLC.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automatic control engineering, and in particular to a PLC protection device for automatic control engineering. BACKGROUND

[0002] Automatic control engineering is an engineering field combining automatic technology, control theory and engineering practice, and realizing the goals of improving production efficiency, quality, reliability, reducing cost and manpower input, etc. by automatically monitoring, controlling and optimizing production processes, equipment operation and system performance, wherein a PLC controller is an essential part of automatic control engineering.

[0003] The existing PLC protection device comprises a protection box, a placing plate is slidably connected in the protection box, a fixing mechanism is arranged in the placing plate, a sliding rod drives a protection plate to fix the PLC controller, a protection plate is symmetrically slidably connected to the top of the placing plate, the protection plate is connected with the fixing mechanism, a moving mechanism is arranged on the top of the placing plate and connected with the fixing mechanism, a lead screw drives a moving plate to move through a sliding block, a first spring and a second spring are added to realize damping protection of the placing plate and the fixed PLC controller, a hollow water cavity and a ventilation pipe are arranged in the protection box, water in the hollow water cavity cools the air in the ventilation pipe, and the interior is cooled.

[0004] The above scheme can protect the PLC, but there are still some deficiencies in actual use, for example, when the PLC needs to be repaired due to failure, it is difficult to remove the PLC from the protection device to release the positioning of the PLC, so that the workers need to be manually operated, which affects the repair progress, and thus needs to be improved. CONTENT OF THE INVENTION

[0005] In order to improve the efficiency of PLC repair, the application provides a PLC protection device for automatic control engineering.

[0006] The PLC protection device for automatic control engineering provided by the application adopts the following technical scheme:

[0007] The utility model provides an automation control engineering PLC protection device, including protection casing and positioning mechanism, positioning mechanism sets up in the inside of protection casing, positioning mechanism includes the baffle of setting up in the inside of protection casing, the back of baffle is fixedly connected with the carrier plate, the below of carrier plate is equipped with two supporting plate, the upper surface of each supporting plate is in contact with the bottom of carrier plate, the back of each supporting plate is fixedly connected with the inner wall of protection casing, the upper surface of carrier plate is fixedly connected with two support plates, the right side of each support plate is equipped with two slide holes, the inner wall of each slide hole is connected with the slide rod, the outer surface of each slide rod is equipped with spring, two groups of spring are located in the side of two support plates away from each other, two groups of slide rods are fixedly connected with two control panels at the end away from each other, two groups of slide rods are fixedly connected with two clamping plates at the end close to each other, the inner wall of protection casing is fixedly connected with two guide plates.

[0008] By adopting the above technical scheme, the baffle is pulled to drive the carrier plate to move, then the PLC is placed on the carrier plate, then the carrier plate is pushed to drive the PLC into the inside of the protection casing. With the movement of the carrier plate, the carrier plate drives the support plate and the control plate to move, the control plate is guided by the inclined surface of the guide plate to drive the slide rod to move, and the clamping plate clamps the PLC. When the PLC needs to be overhauled, the baffle is pulled to drive the carrier plate to move outward, with the movement of the carrier plate, the control plate is gradually released by the guide plate, the spring force drives the control plate to move, and the slide rod drives the clamping plate to move away from the PLC, so that the positioning of the PLC can be automatically released when the PLC is removed, thereby facilitating the overhaul of the PLC by the staff.

[0009] Optionally, the upper side of the carrier plate is provided with two anti-skid pads, and the side away from each other of the two anti-skid pads is fixedly connected with the side close to each other of the two clamping plates.

[0010] By adopting the above technical scheme, the anti-skid pads can effectively increase the friction force of the surface of the clamping plate, thereby avoiding the sliding phenomenon of the PLC during use, and ensuring the stability and safety of the work.

[0011] Optionally, the lower side of the carrier plate is provided with a desiccant storage box, and the bottom of the desiccant storage box is fixedly connected with the inner bottom wall of the protection casing.

[0012] By adopting the above technical scheme, the desiccant storage box can properly store the desiccant, effectively avoid the humid condition in the inside of the device, and ensure that the inside environment of the protection casing is always in a dry state.

[0013] Optionally, the left and right side surfaces of the protective shell are provided with limiting grooves, the inner walls of each limiting groove are slidably connected with limiting blocks, and the mutually close side surfaces of the two limiting blocks are fixedly connected with the left and right side surfaces of the carrier plate.

[0014] By adopting the above technical scheme, the operator pulls the baffle to drive the carrier plate and the limiting blocks to move along the length direction of the moving limiting groove, drives the PLC placed on the carrier plate to enter or leave the inside of the protective shell, and improves the stability of the movement of the carrier plate.

[0015] Optionally, the left and right side surfaces of the protective shell are fixedly connected with mounting plates, and the upper surfaces of each mounting plate are provided with a group of mounting holes.

[0016] By adopting the above technical scheme, the mounting plate can enable the protective shell to be quickly installed, and effectively improves the installation efficiency of the protective shell.

[0017] Optionally, the back surface of the protective shell is provided with a threading groove, the front surface of the baffle is fixedly connected with a pulling groove, and the left and right side surfaces of the protective shell are provided with a group of heat dissipation holes.

[0018] By adopting the above technical scheme, the threading groove facilitates the wire connection work between the PLC and other equipment, and the heat dissipation holes can effectively promote the circulation of air, avoid the malfunction of the PLC due to overheating during operation, and ensure that the PLC is always in a stable working state.

[0019] Optionally, the upper surface of the protective shell is fixedly connected with a vertical plate, the front surface of the vertical plate is rotatably connected with a blocking strip through a bearing, and the front surface of the blocking strip is fixedly connected with a pulling rod.

[0020] Optionally, the front surface of the blocking strip is fixedly connected with a magnetic block, and the magnetic block is magnetically connected with the blocking strip.

[0021] By adopting the above technical scheme, the blocking strip limits the baffle, and the magnetic block positions the baffle, thereby reducing the shaking of the baffle during normal use.

[0022] In summary, the present application has at least one of the following beneficial technical effects:

[0023] 1. Pull the baffle to drive the carrier plate to move, then place the PLC on the carrier plate, then push the carrier plate to drive the PLC into the inside of the protective shell. With the movement of the carrier plate, the carrier plate drives the supporting plate and the control plate to move, the control plate is guided by the inclined surface of the guide plate, the control plate pushes the slide rod to move, and the clamp plate clamps the PLC. When the PLC needs to be repaired, pull the baffle to drive the carrier plate to move outward, with the movement of the carrier plate, the control plate is gradually loosened by the guide plate, the spring force drives the control plate to move the slide rod, and the slide rod drives the clamp plate away from the PLC, so that the positioning of the PLC can be automatically released when the PLC is removed, thereby facilitating the repair of the PLC by the staff;

[0024] 2. The operator pulls the baffle to drive the carrier plate and the limiting block to move along the length direction of the moving limiting groove, drives the PLC placed on the carrier plate to enter or exit the inside of the protective shell, and improves the stability of the carrier plate movement;

[0025] 3. Through the cooperation of the supporting plate, the limiting block and the limiting groove, stable support can be provided for the carrier plate, and smooth forward and backward sliding of the carrier plate can be ensured, the pull-out and pull-in operation of the PLC in the protective shell is realized, and the spring, the control plate and the guide plate are matched with each other. When the carrier plate moves out of the protective shell, the guide plate and the control plate are tightly attached by the elastic force of the spring, and the clamp plate gradually moves away from the PLC in the movement process of the carrier plate, so that the clamping and fixing of the PLC are effectively released. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structure schematic view of a PLC protection device for automatic control engineering according to an embodiment of the present application.

[0027] Figure 2 It is a structure schematic view of a positioning mechanism according to an embodiment of the present application.

[0028] Figure 3 It is a structure schematic view of a baffle and a carrier plate according to an embodiment of the present application.

[0029] Figure 4 It is a structure schematic view of a limiting groove and a limiting block according to an embodiment of the present application.

[0030] The reference signs are as follows: 1, protective shell; 101, vertical plate; 102, baffle; 103, magnetic block; 104, heat dissipation hole; 2, positioning mechanism; 201, baffle; 202, pull groove; 203, supporting plate; 204, carrier plate; 205, supporting plate; 206, anti-skid pad; 207, clamp plate; 208, slide hole; 209, guide plate; 210, control plate; 211, spring; 212, slide rod; 3, mounting plate; 4, desiccant storage box; 5, threading groove; 6, limiting groove; 601, limiting block. DETAILED DESCRIPTION

[0031] The application will be further described below in conjunction with the accompanying drawings. Figures 1-4 The application will be further described below in conjunction with the accompanying drawings.

[0032] The application discloses a PLC protection device for automation control engineering. Referring to Figure 1 A PLC protection device for automation control engineering comprises a protection casing 1, the inside of the protection casing 1 is provided with a positioning mechanism 2, and the positioning mechanism 2 is used for limiting the position of the PLC. The positioning mechanism 2 comprises a baffle 201, one side of the protection casing 1 is provided with an opening, the baffle 201 is movably arranged at the opening of the protection casing 1, and a pull groove 202 is formed through the side wall of the baffle 201.

[0033] Referring to Figure 2 The protection casing 1 is provided with a carrier plate 204, the carrier plate 204 divides the protection casing 1 into two parts, and the PLC is arranged on the top wall of the carrier plate 204. A desiccant storage box 4 is arranged below the carrier plate 204, and the bottom surface of the desiccant storage box 4 is fixedly connected with the inner bottom wall of the protection casing 1. The desiccant storage box 4 can be used for properly storing the desiccant, effectively avoiding the humid condition in the device, and ensuring that the internal environment of the protection casing 1 is always dry.

[0034] Referring to Figure 2 and Figure 4 Limiting grooves 6 are formed in the left and right side faces of the protection casing 1, the inner walls of each limiting groove 6 are slidably connected with a limiting block 601, and the left and right side faces of the two limiting blocks 601, which are close to each other, are fixedly connected with the left and right side faces of the carrier plate 204. The limiting groove 6 and the limiting block 601 can be used for precisely limiting the carrier plate 204, and effectively avoid the carrier plate 204 from sliding out of the protection casing 1. Two supporting plates 203 are arranged below the carrier plate 204, the upper surfaces of the supporting plates 203 are in contact with the bottom surface of the carrier plate 204, and the bottom walls of the supporting plates 203 are fixedly connected with the inner walls of the protection casing 1. The side wall of the baffle 201 is fixedly connected with the side wall of the carrier plate 204.

[0035] The operator pulls the baffle 201 through the pull groove 202, the baffle 201 drives the carrier plate 204 and the limiting block 601 to move along the length direction of the moving limiting groove 6, and drives the PLC placed on the carrier plate 204 to enter or leave the inside of the protection casing 1. During the movement, the bottom wall of the carrier plate 204 is in sliding cooperation with the top wall of the supporting plate 203, and the stability of the carrier plate 204 is further improved.

[0036] Referring to Figure 2 and Figure 3The upper surface of the carrier plate 204 is fixedly connected with two support plates 205, and the two support plates 205 are located on the two sides of the carrier plate 204 respectively. Two sliding holes 208 are formed through the side wall of each support plate 205, and a sliding rod 212 is slidably arranged in the sliding hole 208. The outer surface of each sliding rod 212 is sleeved with a spring 211, and the two groups of springs 211 are located on the side away from each other of the two support plates 205. The two ends of the two groups of sliding rods 212 away from each other are fixedly connected with two control plates 210, and the two ends of the two groups of sliding rods 212 close to each other are fixedly connected with two clamping plates 207. The side close to each other of the two clamping plates 207 is respectively provided with a non-slip pad 206, and the non-slip pad 206 is fixed on the clamping plate 207 by adhesion. The non-slip pad 206 can effectively increase the friction force of the surface of the clamping plate 207, so as to avoid the sliding phenomenon of the PLC in the use process, and ensure the stability and safety of the work.

[0037] The inner wall of the protective shell 1 is fixedly connected with two guide plates 209, the two guide plates 209 are located on the two sides of the carrier plate 204, and the guide plates 209 are fixedly installed above the limiting groove 6. The side wall of the guide plate 209 is inclinedly arranged, and the distance between the side walls of the two guide plates 209 gradually increases from the inside of the protective shell 1 to the opening.

[0038] Pull the pull groove 202 to drive the carrier plate 204 to move, then place the PLC on the carrier plate 204, then push the carrier plate 204 to drive the PLC into the inside of the protective shell 1. With the movement of the carrier plate 204, the carrier plate 204 drives the support plate 205 and the control plate 210 to move, the control plate 210 is guided by the inclined surface of the guide plate 209, the control plate 210 drives the sliding rod 212 to move, and the clamping plate 207 drives the non-slip pad 206 to clamp the PLC. When the PLC needs to be overhauled, pull the pull groove 202 to drive the pull groove 202 to move outwardly with the carrier plate 204, with the movement of the carrier plate 204, the limiting of the control plate 210 by the guide plate 209 is gradually relaxed, the elastic force of the spring 211 drives the control plate 210 to move with the sliding rod 212, and the sliding rod 212 drives the clamping plate 207 to move away from the PLC, so that the positioning of the PLC can be automatically released when the PLC is removed, thereby facilitating the overhaul of the PLC by the staff.

[0039] Referring to Figure 1 and Figure 4 The left and right sides of the protective shell 1 are fixedly connected with mounting plates 3, and a group of mounting holes are formed in the upper surface of each mounting plate 3. The mounting plate 3 can enable the protective shell 1 to be quickly installed by bolts, thereby effectively improving the installation efficiency of the protective shell 1.

[0040] Referring to Figure 1 and Figure 2The back of the protective casing 1 is provided with a threading groove 5, through which the wire connection work between the PLC and other devices can be greatly facilitated. The left and right sides of the protective casing 1 are both provided with a group of heat dissipation holes 104, which can effectively promote the circulation of air, avoid the malfunction of the PLC due to overheating during operation, and ensure that the PLC is always in a stable working state.

[0041] Referring to Figure 1 The upper surface of the protective casing 1 is fixedly connected with a vertical plate 101, the front surface of the vertical plate 101 is rotatably connected with a blocking strip 102 through a bearing, the front surface of the blocking strip 102 is fixedly connected with a pull rod, the blocking strip 102 can limit the baffle 201, and the baffle 201 is prevented from shaking during normal use. The front surface of the blocking strip 102 is fixedly connected with a magnetic block 103, the magnetic block 103 is magnetically connected with the blocking strip 102, the baffle 201 is positioned through the magnetic block 103, and the baffle 201 is prevented from shaking. The blocking strip 102 can be rotated to lock and unlock the baffle 201.

[0042] The implementation principle of the PLC protection device for automatic control engineering according to the embodiment of the application is as follows: during use, the blocking strip 102 is rotated to release the positioning of the baffle 201, then the pull groove 202 is pulled to move the baffle 201 and the carrier plate 204, then the PLC is placed on the carrier plate 204, the carrier plate 204 is pushed to make the carrier plate 204 drive the PLC to enter the inside of the protective casing 1, along with the movement of the carrier plate 204, the carrier plate 204 drives the supporting plate 205 and the control plate 210 to move, the control plate 210 is guided by the inclined surface of the guide plate 209, the control plate 210 is pushed to move the slide rod 212, the clamping plate 207 can clamp the PLC, then the blocking strip 102 is rotated to position the baffle 201. When the PLC needs to be overhauled, the blocking strip 102 is rotated, the pull groove 202 is pulled to move the pull groove 202 and the carrier plate 204 outward, along with the movement of the carrier plate 204, the positioning of the control plate 210 by the guide plate 209 is gradually relaxed, the control plate 210 is moved by the elastic force of the spring 211, the slide rod 212 is moved by the control plate 210, and the clamping plate 207 is moved away from the PLC, so that the positioning of the PLC is automatically released when the PLC is removed, and the staff can conveniently overhaul the PLC.

[0043] The above are preferred embodiments of the application, which do not limit the protection scope of the application, so that: any equivalent changes made on the basis of the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A PLC protection device for automation control engineering, comprising a protection casing (1) and a positioning mechanism (2), characterized in that: The positioning mechanism (2) is arranged in the interior of the protective shell (1), the positioning mechanism (2) includes the baffle (201) arranged in the interior of the protective shell (1), the back of the baffle (201) is fixedly connected with the carrier plate (204), the lower portion of the carrier plate (204) is equipped with two supporting plates (203), the upper surface of each supporting plate (203) is in contact with the bottom surface of the carrier plate (204), the back of each supporting plate (203) is fixedly connected with the inner wall of the protective shell (1), the upper surface of the carrier plate (204) is fixedly connected with two supporting plates (205), the right side surface of each supporting plate (205) is provided with two sliding holes (208), the inner wall of each sliding hole (208) is slidably connected with a sliding rod (212), the outer surface of each sliding rod (212) is sleeved with a spring (211), two groups of the springs (211) are respectively located on the sides, away from each other, of the two supporting plates (205), the ends, away from each other, of the two groups of sliding rods (212) are fixedly connected with two control plates (210), the ends, close to each other, of the two groups of sliding rods (212) are fixedly connected with two clamping plates (207), and the inner wall of the protective shell (1) is fixedly connected with two guide plates (209).

2. The PLC protection device for automation control engineering according to claim 1, characterized in that: The upper portion of the carrier plate (204) is equipped with two anti-skid pads (206), and the sides, away from each other, of the two anti-skid pads (206) are fixedly connected with the sides, close to each other, of the two clamping plates (207).

3. The PLC protection device for automation control engineering according to claim 1, characterized in that: The lower portion of the carrier plate (204) is equipped with a desiccant storage box (4), and the bottom surface of the desiccant storage box (4) is fixedly connected with the inner bottom wall of the protective shell (1).

4. The PLC protection device for automation control engineering according to claim 1, characterized in that: The left and right side surfaces of the protective shell (1) are provided with limiting grooves (6), and the inner wall of each limiting groove (6) is slidably connected with a limiting block (601), and the sides, close to each other, of the two limiting blocks (601) are fixedly connected with the left and right side surfaces of the carrier plate (204).

5. The PLC protection device for automation control engineering according to claim 1, characterized in that: The left and right side surfaces of the protective shell (1) are fixedly connected with mounting plates (3), and the upper surface of each mounting plate (3) is provided with a group of mounting holes.

6. The PLC protection device for automation control engineering of claim 1, wherein: The back of the protective shell (1) is provided with a threading groove (5), the front of the baffle (201) is fixedly connected with a pulling groove (202), and the left and right side surfaces of the protective shell (1) are provided with a group of heat dissipation holes (104).

7. The PLC protection device for automation control engineering according to claim 1, characterized in that: The upper surface of the protective shell (1) is fixedly connected with a vertical plate (101), the front of the vertical plate (101) is rotatably connected with a blocking strip (102) through a bearing, and the front of the blocking strip (102) is fixedly connected with a pulling rod.

8. The PLC protection device for automation control engineering according to claim 7, characterized in that: The front of the blocking strip (102) is fixedly connected with a magnetic block (103), and the magnetic block (103) is magnetically connected with the blocking strip (102).

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