PLC bus manager
By designing dehumidification, buffering, and sealing mechanisms for the PLC bus manager, the short-circuit problem caused by air moisture was solved, achieving effective dehumidification and heat dissipation, and ensuring the normal operation of the equipment.
Patent Information
- Application Number
- CN202510956125.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-11
- Publication Date
- 2025-10-17
AI Technical Summary
Moisture in the air entering the PLC bus processor may cause short circuits in electronic components, leading to the burnout of the PLC bus manager.
A PLC bus manager was designed, which includes a dehumidification mechanism, a buffer mechanism, a sealing mechanism, and a heat dissipation system. It achieves dehumidification and heat dissipation of the air by filtering moisture with an absorbent sponge, damping with a buffer spring, preventing dust with a sealed circular box, and dissipating heat with a cooling fan.
It effectively prevents moisture from entering and affecting electronic components, avoids short circuits, ensures normal data processing and heat dissipation, reduces the impact of vibration, maintains the device's airtightness, and prevents dust and moisture from entering.
Smart Images
Figure CN120812902A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of data processing equipment, in particular to a PLC bus manager. BACKGROUND
[0002] The PLC bus manager is a key equipment in an industrial automation control system, and is like a communication hub of the whole control system; in an automatic production environment, a plurality of PLCs (programmable logic controllers), sensors, actuators and other equipment need to communicate and work cooperatively, and the PLC bus manager provides an efficient communication management mechanism; the PLC bus manager is commonly used as a factory production control hub, has a large number of processing modules in the internal circuit, and continuously runs in the process of factory operation, so that a large amount of heat is generated in the internal circuit and needs to be cooled; the traditional cooling is performed in the form of blowing.
[0003] Some water in the air of a factory with high humidity also enters the device with the wind, and when the water in the air enters the internal circuit of the PLC bus processor, short circuit may occur between electronic elements; the PLC bus processor has a plurality of precise electronic elements such as integrated circuit chips, capacitors and resistors, the elements have respective pins and conductive paths, and the PLC bus manager is at risk of being burnt out. SUMMARY
[0004] The application aims to provide a PLC bus manager to solve the problem that when water in the air enters the internal circuit of the PLC bus processor, short circuit may occur between electronic elements; the PLC bus processor has a plurality of precise electronic elements such as integrated circuit chips, capacitors and resistors, the elements have respective pins and conductive paths, and the PLC bus manager is at risk of being burnt out.
[0005] To solve the above technical problems, the application is implemented by the following technical scheme: The application is a PLC bus manager, which comprises a shell, a closing door hingedly installed on the front of the shell, and a circular box fixedly installed in the shell; the right side of the circular box extends to the outside of the shell, and a plurality of air inlet holes are formed in the right side of the circular box; and the PLC bus manager further comprises: The dehumidification mechanism comprises a plurality of exhaust holes formed on the left side of the circular box, a rotating shaft is rotatably installed in the circular box, a driving motor is fixedly installed on the left side of the circular box, the output shaft of the driving motor is fixedly connected with the rotating shaft, a temperature controller is fixedly installed on the top inner wall of the shell, a circular perforated plate is fixedly installed in the circular box, a water-absorbing sponge is fixedly installed on the right side of the circular perforated plate, the rotating shaft penetrates through and is rotatably connected with the circular perforated plate and the water-absorbing sponge, and a plurality of heat dissipation fan blades are fixedly installed on the rotating shaft.
[0006] Further, a rectangular groove is formed on the rotating shaft, a circular plate is slidably sleeved on the rectangular groove, the outer wall of the circular plate is reciprocally and threadedly connected with the inner wall of the circular box, a plurality of circular rods are fixedly installed on the left side of the circular plate, a rotating rod is rotatably installed on each of the plurality of circular rods, and a drain groove is formed on the inner wall of the circular box.
[0007] Further, a buffering mechanism is arranged in the shell, the buffering mechanism comprises a rectangular rod fixedly installed in the shell, a sliding block is slidably sleeved on the rectangular rod, a buffer spring is sleeved on the rectangular rod, the top end of the buffer spring is fixedly connected with the shell, and the bottom end of the buffer spring is fixedly connected with the sliding block.
[0008] Further, a bus manager is fixedly installed on the front side of the sliding block, a plurality of heat dissipation fins are fixedly installed on the front side of the bus manager, a plurality of connecting lines are fixedly installed on the top and bottom of the bus manager, respectively, and the plurality of connecting lines extend to the outside of the shell, respectively.
[0009] Further, two connecting rods are hingedly installed on the bottom of the sliding block, a T-shaped plate is hingedly installed on the end of each of the two connecting rods, the ends of the two T-shaped plates away from each other extend to the outside of the shell and are slidably connected with the shell, a limiting spring is sleeved on each of the two T-shaped plates, the ends of the two limiting springs close to each other are fixedly connected with the two T-shaped plates, respectively, and the ends of the two limiting springs away from each other are fixedly connected with the shell.
[0010] Further, two limiting plates are fixedly installed on the right side of the shell, a dust scraping frame is slidably installed on the two limiting plates, the left side of the dust scraping frame is in contact with the right side of the circular box, a transmission plate is hingedly installed on the bottom of the dust scraping frame, and the transmission plate is hingedly connected with the T-shaped plate close to the limiting plate.
[0011] Further, a sealing mechanism is arranged in the shell, the sealing mechanism comprises a sealing circular box fixedly installed in the shell, the left side of the sealing circular box extends to the outside of the shell, a plurality of air outlet holes are formed on the right side of the sealing circular box, a T-shaped hollow circular block is slidably installed in the sealing circular box, and the left side of the T-shaped hollow circular block extends to the outside of the sealing circular box.
[0012] Further, the left side inner wall of the T-shaped hollow circular block is fixedly provided with a sealing spring, the right end of the sealing spring is fixedly connected with the right side inner wall of the sealing circular box, and a plurality of air outlet grooves are formed in the inner wall of the T-shaped hollow circular block.
[0013] The application has the following advantages: (1) The PLC bus manager and the temperature controller can monitor the temperature in the shell in real time. When the temperature in the shell is too high, the temperature controller detects the high temperature and starts the driving motor. The driving motor drives the rotating shaft to rotate, and the rotating shaft drives the heat dissipation fan blade to rotate. The rotation of the heat dissipation fan blade generates suction force, which sucks air from the outside into the circular box through the air inlet hole. The air passes through the circular plate, the water-absorbing sponge, the circular plate with holes and the air outlet hole, and finally enters the shell to cool the bus manager. The heat dissipation fins on the bus manager can transfer the heat in the bus manager to the outside, and the blowing air can effectively cool the bus manager. When the air enters the circular box, the water molecules in the air also enter at the same time. The water-absorbing sponge filters the water molecules in the air to prevent the water molecules from entering the shell and affecting the normal data processing, transmission control and connection line short circuit of the bus manager. (2) The PLC bus manager drives the circular plate to rotate during the rotation of the rotating shaft. The circular plate is driven by the threads on the inner wall of the circular box to move towards the shell. The circular plate drives the circular rod to move, and the circular rod drives the rotating rod to move synchronously. The rotating rod moves and rotates to contact the water-absorbing sponge. During the rotation and movement, the water absorbed by the water-absorbing sponge is squeezed out. The squeezed water is accumulated into water droplets and discharged from the circular box through the drain groove. The circular plate moves back and forth to intermittently squeeze the water-absorbing sponge to prevent the water-absorbing sponge from absorbing too much water, which reduces the filtering performance and causes the water to enter the shell and affect the bus manager and the connection line. (3) The PLC bus manager moves up and down under the action of the sliding block and the rectangular rod due to the vibration of the machinery in the factory. When the bus manager moves up, the buffer spring is compressed to reduce the amplitude of the vibration. When the bus manager moves down, the sliding block drives the two connecting rods to move away from each other, and the connecting rod drives the T-shaped plate to move out of the shell. The limiting spring is compressed to buffer the bus manager. When the T-shaped plate moves, the transmission plate moves down, and the dust scraping frame is lowered to clean the dust on the right side of the circular box. This prevents too much dust on the right side of the circular box from affecting the air intake in the shell and affecting the heat dissipation effect of the bus manager. (4) the PLC bus manager of the application, with more and more gas into the shell, the gas pressure in the shell will gradually increase, the gas will enter the sealed round box through the air outlet hole, the gas will push the T-shaped hollow round block to move away from the shell, the T-shaped hollow round block will drive the sealing spring to stretch deformation, when the air outlet groove on the T-shaped hollow round block leaves the sealed round box, the gas in the sealed round box will be discharged from the air outlet groove, so that the device can be effectively cooled, when the driving motor stops running, the air outlet groove on the T-shaped hollow round block will enter the sealed round box again under the action of the elastic force of the sealing spring, at this time the sealed round box is still in a sealed state, avoiding the dust and moisture in the air from entering the device through the air outlet groove to affect the bus manager.
[0014] Of course, implementing any product of the application does not necessarily need to achieve all the advantages described above at the same time. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.
[0016] Figure 1 It is the overall structure schematic diagram of the application; Figure 2 It is the partial cross-sectional structure schematic diagram of the round box of the application; Figure 3 It is the front cross-sectional structure schematic diagram of the application; Figure 4 It is the back partial cross-sectional structure schematic diagram of the application Figure 3 It is the enlarged structure schematic diagram of A in the application; Figure 5 It is the back partial cross-sectional structure schematic diagram of the application Figure 6 It is the enlarged structure schematic diagram of B in the application Figure 5 It is the front partial cross-sectional structure schematic diagram of the application Figure 7 It is the enlarged structure schematic diagram of C in the application Figure 8 Figure 3
[0017] In the drawings, the component list represented by each sign is as follows: In the figure: 1, the shell; 2, the closing door; 3, the circular box; 4, the air inlet hole; 5, the dehumidification mechanism; 501, the air outlet hole; 502, the rotating shaft; 503, the driving motor; 5031, the temperature controller; 504, the circular hole plate; 505, the water absorption sponge; 506, the heat dissipation fan blade; 507, the rectangular groove; 508, the circular plate; 509, the circular rod; 510, the rotating rod; 511, the drainage groove; 6, the buffer mechanism; 601, the rectangular rod; 602, the sliding block; 603, the buffer spring; 604, the bus manager; 605, the cooling fin; 606, the connecting wire; 607, the connecting rod; 608, the T-shaped plate; 609, the limiting spring; 610, the limiting plate; 611, the dust scraping frame; 612, the transmission plate; 7, the sealing mechanism; 701, the sealing circular box; 702, the air outlet hole; 703, the T-shaped hollow circular block; 704, the sealing spring; 705, the air outlet groove. DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.
[0019] Please refer to Figure 1 - Figure 8 As shown in the figure, the present application is a PLC bus manager, which comprises a shell 1, a closing door 2 is hingedly installed on the front of the shell 1, a circular box 3 is fixedly installed in the shell 1, a plurality of air inlet holes 4 are formed in the right side of the circular box 3, which extends to the outside of the shell 1, and the PLC bus manager further comprises: A dehumidification mechanism 5, which comprises a plurality of air outlet holes 501 formed in the left side of the circular box 3, a rotating shaft 502 is rotatably installed in the circular box 3, a driving motor 503 is fixedly installed on the left side of the circular box 3, the output shaft of the driving motor 503 is fixedly connected with the rotating shaft 502, a temperature controller 5031 is fixedly installed on the inner wall of the top of the shell 1, a circular hole plate 504 is fixedly installed in the circular box 3, a water absorption sponge 505 is fixedly installed on the right side of the circular hole plate 504, the rotating shaft 502 penetrates through and is rotatably connected with the circular hole plate 504 and the water absorption sponge 505, and a plurality of heat dissipation fan blades 506 are fixedly installed on the rotating shaft 502.
[0020] As Figure 2As shown, the rotating shaft 502 is provided with a rectangular slot 507, and the circular plate 508 is slidably sleeved on the rectangular slot 507. The outer wall of the circular plate 508 is reciprocally and threadedly connected with the inner wall of the circular box 3. The left side of the circular plate 508 is fixedly provided with a plurality of circular rods 509. The rotating rods 510 are rotatably installed on the circular rods 509, respectively. The inner wall of the circular box 3 is provided with a drainage groove 511.
[0021] In the process of rotating the rotating shaft 502, the circular plate 508 is rotated, and the circular plate 508 is driven to move towards the outer shell 1 under the action of the thread on the inner wall of the circular box 3. The circular plate 508 drives the circular rods 509 to move, and the circular rods 509 drive the rotating rods 510 to move synchronously. In the process of moving and rotating the rotating rods 510, the rotating rods 510 contact the water-absorbing sponge 505. In the process of rotating and moving, the water absorbed by the water-absorbing sponge 505 is squeezed out. The squeezed water is gathered into water droplets and discharged from the circular box 3 through the drainage groove 511.
[0022] As shown in Figure 6 The outer shell 1 is provided with a buffer mechanism 6. The buffer mechanism 6 includes a rectangular rod 601 fixedly installed in the outer shell 1. The slider 602 is slidably sleeved on the rectangular rod 601. The buffer spring 603 is sleeved on the rectangular rod 601. The top end of the buffer spring 603 is fixedly connected with the outer shell 1. The bottom end of the buffer spring 603 is fixedly connected with the slider 602.
[0023] Due to the vibration of the machinery in the factory, the vibration drives the outer shell 1 to vibrate. At this time, the bus manager 604 moves up and down under the action of the slider 602 and the rectangular rod 601.
[0024] As shown in Figure 7 The front surface of the slider 602 is fixedly provided with the bus manager 604. The front surface of the bus manager 604 is fixedly provided with a plurality of heat dissipation fins 605. The top and bottom of the bus manager 604 are respectively fixedly provided with a plurality of connecting lines 606. The connecting lines 606 respectively extend to the outside of the outer shell 1.
[0025] In the process of reciprocating movement of the circular plate 508, the water-absorbing sponge 505 is intermittently squeezed to drain water, so as to avoid the decrease of the filtering performance of the water-absorbing sponge 505 due to the too much water absorbed by the water-absorbing sponge 505, and to prevent the water from entering the outer shell 1 to affect the bus manager 604 and the connecting lines 606.
[0026] As shown in Figure 7As shown, the bottom of the slider 602 is hingedly connected with two connecting rods 607, the ends of the two connecting rods 607 are respectively hingedly connected with T-shaped plates 608, the ends of the two T-shaped plates 608 away from each other extend to the outside of the shell 1 and are respectively connected with the shell 1 in sliding mode, the two T-shaped plates 608 are respectively sleeved with limiting springs 609, the ends of the two limiting springs 609 close to each other are respectively fixedly connected with the two T-shaped plates 608, and the ends of the two limiting springs 609 away from each other are fixedly connected with the shell 1.
[0027] When the bus manager 604 moves downward, the slider 602 drives the two connecting rods 607 to move away from each other, the connecting rods 607 drive the T-shaped plates 608 to move outwardly of the shell 1, and at this time the limiting springs 609 are compressed and deformed to buffer the bus manager 604.
[0028] As shown in Figure 4 The right side of the shell 1 is fixedly connected with two limiting plates 610, the two limiting plates 610 are slidably connected with a dust scraping frame 611, the left side of the dust scraping frame 611 is in contact with the right side of the circular box 3, the bottom of the dust scraping frame 611 is hingedly connected with a transmission plate 612, and the transmission plate 612 is hingedly connected with the T-shaped plate 608 close to the limiting plate 610.
[0029] When the T-shaped plate 608 moves, the transmission plate 612 is driven to move downward, the dust scraping frame 611 is driven to descend, and the dust scraping frame 611 can clean and scrape the dust on the right side of the circular box 3, so as to avoid that too much dust on the right side of the circular box 3 affects the air inlet amount in the shell 1, thereby affecting the heat dissipation effect of the bus manager 604.
[0030] As shown in Figure 8 The shell 1 is provided with a sealing mechanism 7, the sealing mechanism 7 comprises a sealing circular box 701 fixedly connected in the shell 1, the left side of the sealing circular box 701 extends to the outside of the shell 1, the right side of the sealing circular box 701 is provided with a plurality of air outlet holes 702, and the sealing circular box 701 is slidably connected with a T-shaped hollow circular block 703.
[0031] With more and more gas entering the shell 1, the air pressure in the shell 1 gradually increases, the gas enters the sealing circular box 701 through the air outlet holes 702, and the gas drives the T-shaped hollow circular block 703 to move away from the shell 1.
[0032] As shown in Figure 8 The left side inner wall of the T-shaped hollow circular block 703 is fixedly connected with a sealing spring 704, the right end of the sealing spring 704 is fixedly connected with the right side inner wall of the sealing circular box 701, and the inner wall of the T-shaped hollow circular block 703 is provided with a plurality of air outlet grooves 705.
[0033] T-shaped hollow round block 703 will drive the sealing spring 704 to stretch, when the T-shaped hollow round block 703 on the air outlet groove 705 away from the sealed round box 701, the gas in the sealed round box 701 will be discharged from the air outlet groove 705, so that the device is effectively cooled, when the driving motor 503 stops running, the air outlet groove 705 on the T-shaped hollow round block 703 will enter the sealed round box 701 again under the action of the elastic force of the sealing spring 704, at this time the sealed round box 701 is still sealed, to avoid dust and moisture in the air from the air outlet groove 705 into the device to affect the bus manager 604.
[0034] In use, the temperature controller 5031 will monitor the temperature in the shell 1 in real time, when the temperature in the shell 1 is too high, the temperature controller 5031 will detect that the temperature is too high and start the driving motor 503, the driving motor 503 drives the rotating shaft 502 to rotate, the rotating shaft 502 drives the cooling fan blade 506 to rotate, the cooling fan blade 506 rotates to produce suction, the suction will pass through the air inlet hole 4 from the outside to the circular box 3, the air will pass through the circular plate 508, the water absorbing sponge 505, the circular plate with hole 504 and the air outlet hole 501, and finally enter the shell 1 to cool the bus manager 604, the cooling fin 605 on the bus manager 604 can transfer the heat in the bus manager 604, and the blowing wind can effectively cool and cool, when the air enters the circular box 3, the water molecules in the air will enter at the same time, the water absorbing sponge 505 will filter the water molecules in the air, to avoid the water molecules entering the shell 1 affecting the normal data processing and transmission control of the bus manager 604 to the short circuit of the connecting line 606; in the process of rotating the rotating shaft 502 will drive the circular plate 508 to rotate, the circular plate 508 will drive the circular plate 508 to move towards the shell 1 under the action of the thread on the inner wall of the circular box 3, the circular plate 508 drives the circular rod 509 to move, the circular rod 509 drives the rotating rod 510 to move synchronously, in the process of moving and rotating the rotating rod 510 will contact the water absorbing sponge 505, in the process of rotating and moving, the water absorbed by the water absorbing sponge 505 will be squeezed out, the squeezed water will become water droplets and be discharged from the drain groove 511 outside the circular box 3, in the process of reciprocating movement of the circular plate 508, the water absorbing sponge 505 will be squeezed and drained intermittently, to avoid the water absorbing sponge 505 from absorbing too much water, which will cause the filterability to decrease, so that the water enters the shell 1 and affects the bus manager 604 and the connecting line 606; Due to the mechanical work in the factory will produce vibration, vibration will drive the shell 1 vibration, the bus manager 604 will be under the action of the slider 602 and the rectangular bar 601 will produce up and down movement, when the bus manager 604 upward, the buffer spring 603 will produce compression deformation to reduce the amplitude of vibration, when the bus manager 604 downward, the slider 602 will drive the two connecting rods 607 away from each other, the connecting rod 607 drives the T-shaped plate 608 to move out of the shell 1, at this time the limiting spring 609 is compressed to deform to buffer the bus manager 604, when the T-shaped plate 608 moves, it will drive the transmission plate 612 to move downward, the transmission plate 612 drives the dust scraping frame 611 to descend, the dust scraping frame 611 will clean the dust on the right side of the circular box 3, avoid the dust on the right side of the circular box 3 too much to affect the air intake of the shell 1, so as to affect the heat dissipation effect of the bus manager 604; with more and more gas into the shell 1, the air pressure in the shell 1 will gradually rise, the gas will enter the sealed circular box 701 through the air outlet hole 702, the gas will drive the T-shaped hollow circular block 703 to move away from the shell 1, the T-shaped hollow circular block 703 will drive the sealing spring 704 to stretch, when the air outlet groove 705 on the T-shaped hollow circular block 703 leaves the sealed circular box 701, the gas in the sealed circular box 701 will be discharged from the air outlet groove 705, so that the device is effectively cooled, when the driving motor 503 stops running, the air outlet groove 705 on the T-shaped hollow circular block 703 will enter the sealed circular box 701 again under the action of the elastic force of the sealing spring 704, at this time the sealed circular box 701 is still in a sealed state, avoid the dust and moisture in the air from the air outlet groove 705 into the device to affect the bus manager 604.
[0035] The preferred embodiments disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details, nor limit the application to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of the present application. The present application selects and describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and utilize the present application. The present application is limited by the claims and their entire scope and equivalents.
Claims
1. A PLC bus manager, comprising a housing (1), a front side of the housing (1) being hingedly provided with a closing door (2), a circular box (3) being fixedly provided inside the housing (1), the right side of the circular box (3) extending outside the housing (1), a plurality of air inlet holes (4) being provided on the right side of the circular box (3), and characterized in that: Also includes: A dehumidification mechanism (5) includes a plurality of exhaust holes (501) provided on the left side of a circular box (3), a rotating shaft (502) being rotatably mounted in the circular box (3), a driving motor (503) being fixedly mounted on the left side of the circular box (3), an output shaft of the driving motor (503) being fixedly connected to the rotating shaft (502), a temperature controller (5031) being fixedly mounted on the top inner wall of the housing (1), a circular perforated plate (504) being fixedly mounted in the circular box (3), a water-absorbing sponge (505) being fixedly mounted on the right side of the circular perforated plate (504), the rotating shaft (502) penetrating the circular perforated plate (504) and the water-absorbing sponge (505) and being rotatably connected to the circular perforated plate (504) and the water-absorbing sponge (505), and a plurality of heat dissipation fan blades (506) being fixedly mounted on the rotating shaft (502).
2. The PLC bus manager according to claim 1, wherein: A rectangular groove (507) is provided on the rotating shaft (502), a circular plate (508) is slidably sleeved on the rectangular groove (507), the outer wall of the circular plate (508) is reciprocatingly threadedly connected to the inner wall of the circular box (3), a plurality of round rods (509) are fixedly installed on the left side of the circular plate (508), and a rotating rod (510) is rotatably installed on the plurality of round rods (509), and a drainage groove (511) is provided on the inner wall of the circular box (3).
3. The PLC bus manager according to claim 1, wherein: A buffer mechanism (6) is provided in the housing (1), and the buffer mechanism (6) comprises a rectangular rod (601) fixedly mounted in the housing (1), a slider (602) being slidably sleeved on the rectangular rod (601), a buffer spring (603) being sleeved on the rectangular rod (601), the top end of the buffer spring (603) being fixedly connected to the housing (1), and the bottom end of the buffer spring (603) being fixedly connected to the slider (602).
4. The PLC bus manager according to claim 3, wherein: A bus manager (604) is fixedly mounted on the front of the slider (602), a plurality of heat sinks (605) are fixedly mounted on the front of the bus manager (604), and a plurality of connecting wires (606) are fixedly mounted on the top and bottom of the bus manager (604), respectively, and the plurality of connecting wires (606) extend outside the housing (1).
5. The PLC bus manager according to claim 3, characterized in that: Two connecting rods (607) are hingedly mounted on the bottom of the slider (602), and T-shaped plates (608) are hingedly mounted on the ends of the two connecting rods (607). The ends of the two T-shaped plates (608) that are away from each other extend outside the shell (1) and are slidably connected to the shell (1). Limiting springs (609) are respectively sleeved on the two T-shaped plates (608), and the ends of the two limiting springs (609) that are close to each other are fixedly connected to the two T-shaped plates (608), and the ends of the two limiting springs (609) that are away from each other are fixedly connected to the shell (1).
6. The PLC bus manager according to claim 5, characterized in that: Two limiting plates (610) are fixedly mounted on the right side of the housing (1), and a dust scraping frame (611) is slidably mounted on the two limiting plates (610). The left side of the dust scraping frame (611) contacts the right side of the circular box (3). A transmission plate (612) is hingedly mounted on the bottom of the dust scraping frame (611), and the transmission plate (612) is hingedly connected to a T-shaped plate (608) close to the limiting plates (610).
7. The PLC bus manager according to claim 1, characterized in that: A sealing mechanism (7) is provided in the housing (1), and the sealing mechanism (7) comprises a sealing circular box (701) fixedly installed in the housing (1), the left side of the sealing circular box (701) extending to the outside of the housing (1), a plurality of air outlet holes (702) are provided on the right side of the sealing circular box (701), a T-shaped hollow circular block (703) is slidably installed in the sealing circular box (701), and the left side of the T-shaped hollow circular block (703) extends to the outside of the sealing circular box (701).
8. The PLC bus manager according to claim 7, characterized in that: A sealing spring (704) is fixedly mounted on the left inner wall of the T-shaped hollow circular block (703), and the right end of the sealing spring (704) is fixedly connected to the right inner wall of the sealing circular box (701). A plurality of air outlet slots (705) are provided on the inner wall of the T-shaped hollow circular block (703).