A main control box based on industrial control

Abstract

The present invention relates to the technical field of control boxes, and discloses a main control box based on industrial control, comprising a box body, an aviation socket arranged on one side of the box body, a jack annularly opened on the aviation socket, contacts arranged in the jack, a mounting seat arranged inside the jack, contacts arranged on the top of the mounting seat, a plug arranged on the aviation socket, pins arranged on the plug, and various devices arranged inside the box body, and also includes a cleaning component arranged inside the jack. When the cleaning component is working, no additional power is required. The mechanical thrust when the plug is plugged in and out is used to drive the pin cleaning component to rotate along the spiral hole, converting the linear motion into rotary scraping, realizing "plug and clean", and avoiding the energy consumption and structural complexity of traditional active cleaning solutions. By scraping off dust and oxide layers in real time, the fluctuation of contact resistance can be effectively controlled, and compared with traditional aviation sockets, the conductive loss and heat risk are significantly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of control boxes, and in particular to a main control box based on industrial control. Background Art

[0002] In the industrial control field, connecting the main control box to an external power source or device via an aviation socket is a core component, and the stability of this connection directly impacts system reliability. However, when existing aviation sockets are used for long periods of time or in harsh environments (such as dust, moisture, and vibration), contaminants such as dust, oil, and oxide layers easily accumulate on the surfaces of the pins (male end) and contacts (female end). This increases contact resistance, reduces conductivity, and can even cause intermittent power outages and equipment malfunctions. Traditional solutions rely on seals to prevent dust or manual cleaning. The former cannot remove adhered contaminants, while the latter is costly and inefficient to maintain in hidden installations or high-frequency use scenarios. Active cleaning solutions (such as motor-driven ones) suffer from complex structures, high energy consumption, and insufficient reliability. Therefore, a self-maintenance technology that requires no additional power, automatically removes contaminants from both contact surfaces during plugging and unplugging, and does not affect conductivity is urgently needed to meet the stringent requirements of industrial control for high-reliability connections. Summary of the Invention

[0003] In view of the problem in the existing technology that when the aviation socket of the main control box is plugged in and out for a long time or used in harsh environments, dust, oil, oxide layer and other pollutants are easily accumulated on the surface of the pins and contacts, resulting in increased contact resistance, decreased conductivity, and even intermittent power outages, equipment malfunctions and other faults, a main control box based on industrial control is proposed.

[0004] Its purpose is to meet the stringent requirements of industrial control for high-reliability connections through self-maintenance technology that does not require additional power, can automatically remove contaminants from both contact surfaces during the plug-in and unplug process, and does not affect the conductive performance.

[0005] The technical solution of the present invention is a main control box based on industrial control, comprising a box body, an aviation socket arranged on one side of the box body, a jack provided in a ring shape on the aviation socket, contacts provided in the jack, a mounting seat provided inside the jack, contacts provided on the top of the mounting seat, a plug provided on the aviation socket, pins provided on the plug, and various components provided inside the box body, and also comprising a cleaning component provided inside the jack;

[0006] The cleaning component includes a pin cleaning component and a contact cleaning component arranged in the socket, and a synchronization component arranged between the pin cleaning component and the contact cleaning component;

[0007] The pin cleaning assembly includes a fixed column arranged in the socket, a fixed ring arranged on the top of the fixed column, the fixed ring is fixed to the aviation socket, two spiral holes are provided in an annular array on the fixed column, a spring is arranged at the bottom of the fixed ring, a pulling ring is arranged at the bottom of the spring, a rotating ring that is limited to rotate at the bottom of the pulling ring, two limiting blocks that are limited to slide at the bottom of the rotating ring, a pin cleaning piece that is limited to rotate inside the limiting blocks, and the pin cleaning piece is slidably arranged in the corresponding spiral holes;

[0008] The contact cleaning assembly includes a rotating seat that is limited to rotate on the top of the mounting seat, two moving blocks that are limited to slide on the top of the rotating seat, two contact cleaning pieces respectively arranged on the opposite sides of the moving blocks, and a rotating hole opened between the mounting seat and the fixed column.

[0009] Furthermore, the pin cleaning member includes a rotating column that is limited and rotated inside the limiting block, a pin scraper arranged on one side of the rotating column, and an abutting surface opened on the top of the pin scraper.

[0010] Furthermore, in the initial state, the side of the top of the pin scraper is in contact with the bottom of the pin, and the contact surface is in a horizontal state.

[0011] Furthermore, the contact cleaning piece and the pin cleaning piece are symmetrical, and the sides of the bottom of the contact cleaning piece fit with the top of the contact.

[0012] Furthermore, the synchronization assembly includes synchronization rods symmetrically arranged on both sides of the rotating ring and limiting rods arranged on both sides of the rotating seat, and the synchronization rods are limited and slide in the limiting rods.

[0013] Furthermore, the cleaning component also includes a retraction assembly, which includes an extrusion surface opened at the top of the pin scraper and located on one side of the abutment surface, a torsion spring arranged between the rotating column and the limit block, a deflection rod arranged at the bottom of the pin scraper, a deflection groove opened at the top of the contact cleaning piece and matching the size of the deflection rod, and the notch of the deflection groove corresponds to the bottom of the deflection rod in the vertical direction, the deflection groove is inclined, and a movable hole is opened at the end of the spiral hole for the limit block to move and retract, and retraction grooves are opened on both sides of the bottom of the jack for the limit block and the movable block to limit and retract.

[0014] Furthermore, the lengths of the limiting block and the moving block in the horizontal and vertical directions are respectively greater than the lengths of the pin cleaning piece and the contact cleaning piece.

[0015] Furthermore, the limiting block and the moving block are located in the same vertical direction, and the number of spiral coils of the spiral hole is one.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The cleaning component operates without additional power. Instead, it utilizes the mechanical thrust of plugging and unplugging (the pins squeezing the cleaning component) to drive the cleaning component along the spiral hole, converting linear motion into rotary scraping. This enables "plug-and-clean" operation, avoiding the energy consumption and structural complexity of traditional active cleaning solutions (such as motor-driven systems). By scraping away dust and oxide layers (such as verdigris and silver sulfide) in real time, fluctuations in contact resistance are effectively controlled, significantly reducing conductive losses and the risk of heat generation compared to traditional aviation sockets.

[0018] 2. The automatic yielding design avoids the obstruction of the cleaning component when the pins and contacts are in contact and connected, ensuring that the pins and contacts can be in close and stable contact, thereby ensuring good conductive performance. After the cleaning component shrinks, the connection process between the pins and contacts is smoother, reducing the loose or unstable connection caused by the presence of the cleaning component, effectively reducing the probability of failure and improving the reliability and stability of the system.

[0019] 3. After cleaning, the scraper automatically retracts to the bottom of the socket, maintaining direct contact between the pins and contacts and preventing damage to the surface coating from prolonged friction. When the plug is unplugged, the scraper automatically returns to its original position, ready for the next cleaning. This ensures effective cleaning while extending the life of plugs and outlets, making it ideal for industrial applications requiring frequent plugging and unplugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the overall three-dimensional structure of the box body of the present invention;

[0021] Figure 2 Schematic diagram of the overall structure of the plug of the present invention;

[0022] Figure 3 This is a schematic diagram of the overall structure of the aviation socket of the present invention;

[0023] Figure 4 It is a schematic diagram of the overall structure of the cleaning component of the present invention;

[0024] Figure 5 This is a schematic diagram of the overall exploded structure of the cleaning component of the present invention;

[0025] Figure 6 This is a schematic diagram of the exploded structure of the pin cleaning assembly, contact cleaning assembly and synchronization assembly of the present invention;

[0026] Figure 7 It is a partial three-dimensional structural diagram of the pin cleaning assembly of the present invention;

[0027] Figure 8 This is a schematic structural diagram of the positional relationship between the pin cleaning piece and the contact cleaning piece of the present invention;

[0028] Figure 9It is an enlarged three-dimensional structural diagram of the pin cleaning piece and the contact cleaning piece of the present invention;

[0029] Figure 10 is a schematic diagram of the three-dimensional structure of the shrinkage component of the present invention;

[0030] Figure 11 It is a schematic diagram of the enlarged structure of the deflection groove of the present invention;

[0031] Figure 12 This is a schematic diagram of the overall exploded structure of the contact cleaning assembly of the present invention;

[0032] Figure 13 It is a front cross-sectional structural schematic diagram of the jack of the present invention;

[0033] Figure 14 For the present invention Figure 13 Enlarged structural diagram at point A in the middle.

[0034] In the picture:

[0035] 1. Box body; 11. Aviation socket; 12. Contact; 13. Mounting seat; 14. Plug; 15. Pin; 2. Pin cleaning assembly; 21. Fixed column; 22. Fixed ring; 23. Spiral hole; 24. Spring; 25. Pull ring; 26. Rotating ring; 27. Limit block; 28. Pin cleaning piece; 281. Rotating column; 282. Pin scraper; 283. Abutment surface; 3. Contact cleaning assembly; 31. Rotating seat; 32. Moving block; 33. Contact cleaning piece; 34. Rotating hole; 4. Synchronizing assembly; 41. Synchronizing rod; 42. Limit rod; 5. Contraction assembly; 51. Extrusion surface; 52. Deflection rod; 53. Deflection slot; 54. Moving hole; 55. Contraction slot. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0037] Example 1, with reference to Figures 1-14, which is the first embodiment of the present invention, provides a main control box based on industrial control, including a box body 1, an aviation socket 11 fixed to one side of the box body 1, a jack opened in a ring shape on the aviation socket 11, a contact 12 installed in the jack, a mounting base 13 installed inside the jack, the contact 12 installed on the top of the mounting base 13, a plug 14 plugged into the aviation socket 11, a pin 15 installed on the plug 14, and various devices installed inside the box body 1, and also includes a cleaning component installed inside the jack; the cleaning component includes a pin cleaning assembly 2 and a contact cleaning assembly 3 installed in the jack, and a synchronization assembly 4 installed between the pin cleaning assembly 2 and the contact cleaning assembly 3; the pin cleaning assembly 2 includes a fixing column 21 installed in the jack, a fixing ring 22 fixedly connected to the top of the fixing column 21, the fixing ring 22 is fixed to the aviation socket 11, two spiral holes 23 opened in a ring array on the fixing column 21, and a spring 24 fixedly connected to the bottom of the fixing ring 22, A pulling ring 25 fixedly connected to the bottom of the spring 24, a rotating ring 26 limited in rotation at the bottom of the pulling ring 25, two limit blocks 27 limited in sliding at the bottom of the rotating ring 26, a pin cleaning piece 28 limited in rotation inside the limit block 27, and the pin cleaning piece 28 is slidably connected in the corresponding spiral hole 23; the contact cleaning assembly 3 includes a rotating seat 31 limited in rotation at the top of the mounting seat 13, two moving blocks 32 limited in sliding at the top of the rotating seat 31, two contact cleaning pieces 33 fixedly connected to opposite sides of the moving blocks 32, and a rotating hole 34 opened between the mounting seat 13 and the fixed column 21. It should be noted that in order to improve conductivity and durability, the surfaces of the pins 15 and contacts 12 will be plated with palladium alloy or other coatings. The material hardness of the pin cleaning piece 28 and the contact cleaning piece 33 in the cleaning component will not be higher than the hardness of the coating. In order to avoid wear of the coating during the rotation scraping process, a low hardness and wear-resistant material can be selected, such as beryllium bronze plated with soft gold or conductive polymer.

[0038] Specifically, when the main control box is connected to an external power source through the five-core aviation socket 11, the five-core aviation plug 14 is inserted into the aviation socket 11 to provide a stable 380V voltage for the devices inside the main control box; when the pin 15 is inserted into the corresponding socket, one end of the pin 15 squeezes and pushes the two pin cleaning pieces 28, causing the pin cleaning pieces 28 to rotate along the spiral hole 23. During the insertion process of the pin 15, the two pin cleaning pieces 28 rotate and scrape the bottom surface of the pin 15 to scrape off the dust, oxide layer or debris accumulated on the bottom surface of the pin 15, and At the same time, by providing a synchronization component 4, the pin cleaning component 2 drives the contact cleaning component 3 to rotate and clean the top surface of the contact 12 in the rotating hole 34 while rotating and scraping, so that the pin 15 and the contact 12 are rotated and cleaned once before and after each power-on, thereby preventing the aviation plug 14 and the aviation socket 11 from being stubbornly adhered to dust and debris due to long-term plugging or placement, resulting in an increase in contact resistance, a decrease in conductive performance, abnormal plugging, and even circuit failure, thereby improving the stability of the power connection and reducing the possibility of safety accidents.

[0039] The cleaning component operates without additional power. Instead, it utilizes the mechanical thrust of plug 14 (pin 15 compressing pin cleaning component 28) to drive pin cleaning component 28 along spiral hole 23, converting linear motion into rotary scraping. This achieves "plug-and-clean" and avoids the energy consumption and structural complexity of traditional active cleaning solutions (e.g., motor-driven). By scraping away dust and oxide layers (such as verdigris and silver sulfide) in real time, it effectively controls contact resistance fluctuations, significantly reducing conductive losses and heat generation compared to traditional aviation sockets 11. Furthermore, it is resistant to environmental interference and is well-suited for harsh environments such as dusty (e.g., metalworking workshops) and humid (e.g., offshore platforms). It avoids intermittent power outages or signal degradation caused by pollutant accumulation, making it particularly suitable for industrial control applications requiring extremely stable power supply (e.g., PLCs and relay modules). Furthermore, it reduces manual intervention and eliminates the need for regular disassembly and cleaning, making it particularly suitable for equipment installed in hidden locations (e.g., main control boxes within large machinery), thereby reducing maintenance costs.

[0040] Reference Figures 8-10 The pin cleaning member 28 includes a rotating column 281 that is limited and rotated inside the limiting block 27, a pin scraper 282 fixedly connected to one side of the rotating column 281, and an abutting surface 283 formed on the top of the pin scraper 282.

[0041] Specifically, since the pin 15 will squeeze the pin scraper 282 when inserted, the pin scraper 282 will synchronously press down the limit block 27 through the rotating column 281, and the limit block 27 will press down the rotating ring 26. The rotating ring 26 will synchronously pull down the pulling ring 25, and the pulling ring 25 will stretch the spring 24. When the pin scraper 282 rotates along the spiral hole 23, it will drive the rotating ring 26 to rotate through the rotating column 281 and the limit block 27, thereby achieving the purpose of the pin scraper 282 rotating and scraping and cleaning the bottom surface of the pin 15.

[0042] Reference Figure 8-Figure 9 In the initial state, the side of the top of the pin scraper 282 is in contact with the bottom of the pin 15, and the abutting surface 283 is in a horizontal state.

[0043] Specifically, such an arrangement allows one side of the pin scraper 282 to be in stable and sufficient contact with the bottom surface of the pin 15, thereby improving the cleaning effect during rotation.

[0044] Reference Figure 6 and Figure 8-Figure 9 The contact cleaning piece 33 and the pin cleaning piece 28 are in a symmetrical state, and the side of the bottom of the contact cleaning piece 33 is in contact with the top of the contact 12.

[0045] Specifically, the contact cleaning piece 33 is obtained by symmetrically setting the pin cleaning piece 28, and a synchronous two-way cleaning effect can be achieved through the synchronization component 4. The synchronization component 4 (linked by the rotating hole 34) enables the pin cleaning component 2 and the contact cleaning component 3 to move synchronously. When the pin 15 is inserted, the bottom surface of the pin 15 (male end) and the top surface of the contact 12 (female end) are scraped at the same time, covering the risk of contamination on both contact surfaces and improving the cleaning efficiency.

[0046] Example 2, reference Figure 6 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the synchronization assembly 4 includes synchronization rods 41 symmetrically fixedly connected to both sides of the rotating ring 26, and limit rods 42 fixedly connected to both sides of the rotating seat 31, and the synchronization rod 41 is limited and slides within the limit rods 42.

[0047] Specifically, when the rotating ring 26 rotates, the synchronization rods 41 on either side rotate, driving the stop rods 42 to rotate synchronously, thereby causing the rotating base 31 to rotate synchronously. This allows the pin scraper 282 and the contact cleaning member 33 to simultaneously clean the contact surface between the pins 15 and contacts 12. The cleaning effect is synergistic. Due to the synchronous cleaning, dust, oxide layers, and debris on the pins 15 and contacts 12 are scraped off simultaneously. The two work together to achieve a more comprehensive and thorough cleaning process. For example, synchronous cleaning can effectively address cross-contamination caused by contact between the pins 15 and contacts 12, ensuring that the entire contact area is thoroughly cleaned, further ensuring the electrical conductivity between the plug 14 and the aviation socket 11 and enhancing electrical stability. Furthermore, the design of the synchronization rods 41 and the stop rods 42 is relatively simple, without complex transmission mechanisms or electronic components. This simple structure reduces the number of parts, lowers manufacturing difficulty and cost, and also reduces the possibility of failure. In practical applications, the simple structure facilitates maintenance and repair, improving the maintainability of the equipment. The remaining structures are the same as those of Example 1.

[0048] Example 3, reference Figures 8-11 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: the cleaning component also includes a retraction component 5, which includes an extrusion surface 51 opened at the top of the pin scraper 282 and located on one side of the abutment surface 283, a torsion spring (not shown in the figure) abutting between the rotating column 281 and the limit block 27, a deflection rod 52 fixedly connected to the bottom of the pin scraper 282, a deflection groove 53 opened at the top of the contact cleaning member 33 and matching the size of the deflection rod 52, and the notch of the deflection groove 53 corresponds to the bottom of the deflection rod 52 in the vertical direction, the deflection groove 53 is inclined, a moving hole 54 is opened at the end of the spiral hole 23 for the limit block 27 to move and retract, and a retraction groove 55 is opened on both sides of the bottom of the jack for the limit block 27 and the moving block 32 to limit the retraction and movement.

[0049] Specifically, when the pin cleaning piece 28 and the contact cleaning piece 33 are in contact, the deflection rod 52 is inserted into the deflection groove 53, causing the pin scraper 282 to deflect, thereby causing the pin 15 to act on the inclined extrusion surface 51, causing the pin scraper 282 to be squeezed and contracted to move, and because the deflection rod 52 is inserted into the deflection groove 53, a synchronous limiting effect is formed, so that the pin cleaning piece 28 synchronously drives the contact cleaning piece 33 to move into the contraction groove 55 inside the socket, so that it can automatically contract after the cleaning effect is achieved, avoiding affecting the contact and connection between the pin 15 and the contact 12. Such an automatic yielding design avoids the cleaning component from causing obstruction when the pin 15 and the contact 12 are in contact and connected, ensuring that the pin 15 and the contact 12 can be in close and stable contact, thereby ensuring good conductive performance. After the cleaning component is retracted, the connection process between the pin 15 and the contact 12 is smoother, reducing the loose or unstable connection that may be caused by the presence of the cleaning component, effectively reducing the probability of failure, and improving the reliability and stability of the system. In addition, the design of the retraction component 5 allows the cleaning component to be retracted into the inside of the socket when not working, effectively utilizing the space inside the socket and improving the compactness of the entire aviation socket 11 structure. In equipment such as industrial control main control boxes, space is usually limited, and a compact structural design helps to reduce the size of the equipment, improve the integration of the equipment, and make the equipment more compact and lightweight.

[0050] Reference Figures 8-10 The lengths of the limit block 27 and the movable block 32 in the horizontal and vertical directions are respectively greater than the lengths of the pin cleaning piece 28 and the contact cleaning piece 33.

[0051] Specifically, the pin cleaning member 28 and the contact cleaning member 33 can be retracted into the retraction groove 55 without being blocked.

[0052] Reference Figure 4-Figure 5 and Figure 12 The limiting block 27 and the moving block 32 are located in the same vertical direction, and the number of spiral coils of the spiral hole 23 is one circle.

[0053] Specifically, such a configuration allows both the contacts 12 and the pins 15 to be completely wiped, and also allows the triggering and retraction assembly 5 to be ready after the wipes to achieve retraction after cleaning.

[0054] Based on Examples 1-3, the working principle of the present invention is as follows: When plug 14 is inserted, pin 15 squeezes the cleaning scraper, causing it to rotate along the spiral hole 23 of the fixing column 21, synchronously scraping the bottom surface of pin 15 and the top surface of contact 12 to remove dust and oxide layers. The synchronization rod 41 and the limit rod 42 work together to ensure simultaneous cleaning in both directions, preventing contamination residue on a single contact surface. After insertion, the inclined deflection groove 53 deflects the pin scraper 282. The compression surface 51 is pressed downward, causing the pin scraper 282 to move synchronously toward the retraction groove 55 at the bottom of the socket, automatically withdrawing from the contact area and avoiding interference with the direct electrical conduction between pin 15 and contact 12. When removed, a torsion spring resets the cleaning member to its initial state. The entire process is driven by the mechanical force of insertion and removal, requiring no additional power. Through spiral cleaning, synchronous linkage, and adaptive retraction, the self-maintenance function of "insertion and cleaning, position and clearance" is achieved, improving connection stability in harsh environments, reducing manual maintenance, and adapting to the high-reliability requirements of industrial control.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A main control box based on industrial control, comprising a box body, an aviation socket disposed on one side of the box body, a jack formed in a ring shape on the aviation socket, contacts disposed in the jack, a mounting seat disposed within the jack, contacts disposed on the top of the mounting seat, a plug disposed on the aviation socket, pins disposed on the plug, and various components disposed within the box body, characterized in that: Also included is a cleaning component disposed inside the socket; The cleaning component includes a pin cleaning component and a contact cleaning component arranged in the socket, and a synchronization component arranged between the pin cleaning component and the contact cleaning component; The pin cleaning assembly includes a fixed column arranged in the socket, a fixed ring arranged on the top of the fixed column, the fixed ring is fixed to the aviation socket, two spiral holes are provided in an annular array on the fixed column, a spring is arranged at the bottom of the fixed ring, a pulling ring is arranged at the bottom of the spring, a rotating ring that is limited to rotate at the bottom of the pulling ring, two limiting blocks that are limited to slide at the bottom of the rotating ring, a pin cleaning piece that is limited to rotate inside the limiting blocks, and the pin cleaning piece is slidably arranged in the corresponding spiral holes; The contact cleaning assembly includes a rotating seat that is limited to rotate on the top of the mounting seat, two moving blocks that are limited to slide on the top of the rotating seat, two contact cleaning pieces respectively arranged on opposite sides of the moving blocks, and a rotating hole opened between the mounting seat and the fixed column; The cleaning component also includes a retraction assembly, which includes an extrusion surface opened at the top of the pin scraper and located on one side of the abutment surface, a torsion spring arranged between the rotating column and the limit block, a deflection rod arranged at the bottom of the pin scraper, a deflection groove opened at the top of the contact cleaning piece and matching the size of the deflection rod, and the notch of the deflection groove corresponds to the bottom of the deflection rod in the vertical direction, the deflection groove is inclined, a movable hole opened at the end of the spiral hole for the limit block to move and retract, and retraction grooves opened on both sides of the bottom of the jack for the limit block and the movable block to limit and retract.

2. The main control box based on industrial control according to claim 1, characterized in that: The pin cleaning piece includes a rotating column that is limited and rotated inside the limiting block, a pin scraper arranged on one side of the rotating column, and an abutting surface formed on the top of the pin scraper.

3. The main control box based on industrial control according to claim 2, characterized in that: In the initial state, the side of the top of the pin scraper is in contact with the bottom of the pin, and the contact surface is in a horizontal state.

4. The main control box based on industrial control according to claim 1, characterized in that: The contact cleaning piece and the pin cleaning piece are in a symmetrical state, and the side of the bottom of the contact cleaning piece is in contact with the top of the contact.

5. The main control box based on industrial control according to claim 1, characterized in that: The synchronization component includes synchronization rods symmetrically arranged on both sides of the rotating ring and limiting rods arranged on both sides of the rotating seat. The synchronization rods are limited and slide in the limiting rods.

6. The main control box based on industrial control according to claim 1, characterized in that: The lengths of the limiting block and the moving block in the horizontal and vertical directions are respectively greater than the lengths of the pin cleaning piece and the contact cleaning piece.

7. The main control box based on industrial control according to claim 6, characterized in that: The limiting block and the moving block are located in the same vertical direction, and the number of coils of the spiral hole is one.

Images