Composite mechanical arm plug connector for thick-strand single cable connection

Abstract

The invention discloses a composite mechanical arm plug connector for thick-strand single cable connection, and belongs to the field of cable plug connectors, the composite mechanical arm plug connector comprises a male head and a female head, the male head and the female head are made of stainless steel, the male head and the female head are mutually plugged, and the male head is provided with a limiting snap ring; a limiting clamping ring is arranged on the male head, a fastening mechanism used for clamping the limiting clamping ring is arranged on the female head, a terminal A is arranged in the male head, a terminal B is arranged in the female head, the terminal A and the terminal B are connected in an inserted mode, a buffering structure is connected to the terminal A, and a scraping mechanism used for polishing the outer surface of the terminal B is arranged on the outer surface of the terminal B. The initial performance of the connector clip is improved, the connector clip can continuously play a role in the long-term use process, the service life of the connector clip is prolonged, the maintenance requirement is reduced, the operation cost is reduced, and the reliability and stability of the mechanical arm are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cable connectors, and in particular to a composite mechanical arm connector for connecting thick single cables. Background Art

[0002] In the field of industrial automation, especially in the application of robotic arms, cable connectors are key components for connecting power and signals, and their reliability and stability are crucial. However, robotic arms usually work in harsh environments such as high temperature, low temperature, humidity, oil pollution, vibration, etc. These environmental factors will have a significant impact on the performance of connectors, especially the contact reliability of terminals.

[0003] The terminals of the cable connectors in the prior art are usually made of conductive materials such as copper alloys. Although they can meet the basic conductivity requirements in the initial use, the terminal surface is easily affected by environmental factors and produces an oxide layer or attached pollutants during long-term use. These oxide layers and pollutants will significantly increase the contact resistance, reduce the conductivity, lead to unstable signal transmission, and even cause faults such as heating and circuit breaking, which seriously affect the normal operation and safety of the robot arm.

[0004] In order to solve the problem of terminal oxidation, the existing technology generally adopts the following methods: Improve the oxidation resistance of terminal materials: For example, the use of precious metal coatings such as gold plating and silver plating can improve the oxidation resistance to a certain extent, but the cost is high, and oxidation or wear will inevitably occur after long-term use in harsh environments.

[0005] Regular maintenance and cleaning: Manually dismantle the terminals regularly to clean and remove rust. This method is not only time-consuming and labor-intensive, increasing maintenance costs, but also prone to damage the connectors due to frequent disassembly and assembly, reducing their service life. Alternatively, a special structure can be designed to increase the contact pressure between the terminals to penetrate the oxide layer and achieve good electrical contact. However, excessive contact pressure may cause the terminals to deform, affecting the plug-in and unplug performance and service life of the connectors.

[0006] Although the above methods can alleviate the problems caused by terminal oxidation and contamination to a certain extent, they all have obvious limitations and cannot fundamentally solve the problem. Especially in application scenarios such as robotic arms that require high reliability and long service life, these methods are difficult to meet actual needs. Summary of the invention

[0007] The technical task of the present invention is to provide a composite robot arm connector for connecting thick single cables to solve the above problems.

[0008] To achieve the above object, the present invention provides the following technical solutions: A composite mechanical arm connector for connecting thick single-strand cables, comprising a male head and a female head, both of which are made of stainless steel, the male head and the female head are plugged into each other, and a limit clamp ring is provided on the male head; The female head is provided with a fastening mechanism for clamping the limit clamp ring, the male head is provided with a terminal A inside, the female head is provided with a terminal B inside, the terminal A and the terminal B are plugged into each other, the terminal A is connected with a buffer structure, and the outer surface of the terminal B is provided with a scraping mechanism for polishing the outer surface of the terminal B.

[0009] Preferably, the male connector comprises a cylindrical shell with openings at both ends, the diameter of one end of the cylindrical shell close to the female connector is larger than the diameter of the other end, a limiting convex ring is arranged inside the cylindrical shell, the terminal A is slidably arranged in the limiting convex ring, the terminal A is U-shaped, a plum blossom-shaped cone is arranged on the outer side of the end of the terminal B, and the terminal B is inserted into the terminal A.

[0010] Preferably, a circle of annular slideway is integrally connected to the side surface of the limiting convex ring, and a circle of sealing ring is slidably connected to the annular slideway; The sealing ring includes an integrally connected sliding section and a sealing section. The sliding section is arranged in a bent shape and is slidably arranged in an annular slideway. The sealing section is arranged in a circular ring shape, and the inner ring of the sealing section is clamped on the outer surface of terminal A.

[0011] Preferably, the female connector comprises a docking ring matching the end of the cylindrical shell with a larger diameter, the terminal B is mounted on the inner ring of the docking ring, and the fastening mechanism is mounted on the outer side of the docking ring.

[0012] Preferably, the fastening mechanism includes a limit plate, which is provided with at least three limit grooves, and a clamping block is slidably connected in the three limit grooves. The clamping block is in a "J" shape, and a wedge cut surface is provided at one end of the clamping block. The outer side of the limit clamping ring is provided with an inclined surface matching the wedge cut surface. When the clamping block moves toward the limit clamping ring, the wedge cut surface of the clamping block abuts against the inclined surface on the limit clamping ring to clamp the male head and the female head. The other end of the clamping block is fixedly connected to a guide column.

[0013] Preferably, a circular shell is connected to one side of the limit plate, a notch is provided on the circular shell, a turntable cavity is provided in the circular shell, a turntable is rotatably provided in the turntable cavity, the turntable is arranged in a circular shape, anti-slip teeth are provided on the turntable at the position of the notch, and a positioning assembly for fixing the turntable is also installed on the circular shell.

[0014] Preferably, the inner ring of the turntable is provided with a circle of splines, and the annular housing and the docking ring are provided with annular grooves interconnected with each other, the splines of the turntable extend into the annular grooves, and the scraping mechanism includes a grinding sleeve arranged between the docking ring and the terminal B, and two groups of scraping plates arranged in a semicircular shape are arranged inside the grinding sleeve, one side of the scraping plate is attached to the outer surface of the terminal B, and the other side of the scraping plate is connected to a Z-shaped spring plate, and the outer surface of the grinding sleeve is provided with a circle of convex rings, and the convex rings are provided with keys matching the splines, so that the rotation of the turntable drives the rotation of the grinding sleeve.

[0015] Preferably, a strip-shaped slide groove is provided on the inner wall of the grinding sleeve, and a sliding block is connected to the other end of the Z-shaped spring piece, and the sliding block is slidably arranged in the strip-shaped slide groove.

[0016] Preferably, the turntable is further provided with an inclined groove matching the position of the limiting slide groove, and the other end of the guide column is slidably inserted in the inclined groove. When the turntable rotates, the clamping block is driven to move along the limiting slide groove due to the limiting effect of the guide column.

[0017] Compared with the prior art, the advantages and positive effects of the present invention are: 1. The connector of the present application integrates a scraping mechanism, which can scrape and clean the surface of terminal B before and during the plug-in process, remove the oxide layer and contaminants, and restore the cleanliness and conductivity of the terminal surface. The contact resistance is effectively reduced and the electrical performance of the connector is improved. At the same time, the scraping mechanism drives the grinding sleeve and the scraping blade to move through the rotation of the turntable, realizing circular and axial scraping and cleaning of terminal B, ensuring that all parts of the surface of terminal B can be effectively cleaned. It not only improves the initial performance of the connector, but also continues to play a role during long-term use, extending the service life of the connector, reducing maintenance requirements, reducing operating costs, and improving the reliability and stability of the robot arm.

[0018] 2. The present invention adopts a fastening mechanism to achieve a stable connection between the male and female heads, and utilizes the mutual cooperation between the wedge cut surface of the clamping block and the inclined surface on the limit clamping ring. The clamping block is driven to move by rotating the turntable to ensure the firm connection of the connector and prevent the connector from loosening due to vibration or other external forces during the operation of the robot arm. At the same time, the fastening mechanism is designed without wearing parts, and the operation is simple. The connection and disassembly can be completed efficiently without tools, which greatly simplifies the assembly and disassembly process. Especially in the scenario where the connector needs to be frequently disassembled for maintenance or replacement, it can save a lot of time for the staff and reduce labor intensity. Compared with the traditional screw fastening method, the fastening mechanism is more user-friendly and more convenient to operate, which reduces the risk of damage caused by improper tool operation and improves the service life and reliability of the connector.

[0019] 3. The reliability and low resistance of electrical connection are ensured through multiple mechanisms. Terminal A and terminal B are both designed with special structures. The U-shaped structure of terminal A and the plum blossom-shaped cone design of terminal B effectively increase the contact area and reduce the contact resistance. At the same time, when terminal B is inserted into terminal A, the cone can pierce the oxide layer on the surface of terminal A to ensure good electrical contact.

[0020] 4. The present invention is equipped with a buffer structure on terminal A, which can absorb vibration and impact and avoid poor contact caused by vibration. These designs work together to ensure that the connector can maintain stable electrical performance during long-term use, reduce resistance, reduce energy loss, and improve the working efficiency and reliability of the robot arm.

[0021] 5. In order to prevent dust from entering the connector and affecting its use, a sealing ring is set inside the male head and a rubber pad is set at the female head docking ring. The sealing ring can move with the terminal during the terminal insertion process, always keeping the exposed part of the terminal sealed, effectively preventing dust from entering. The rubber pad at the docking ring can seal the docking gap between the male and female heads, further reducing the possibility of dust entering. These designs work together to build a multiple dust-proof barrier. It effectively reduces poor contact caused by dust accumulation and improves the reliability and service life of the connector. Especially in industrial environments with a lot of dust, it effectively ensures the stable operation of the robot arm, reduces maintenance frequency, and reduces operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is a schematic diagram of the punching structure of the plug connector according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the closed structure of the connector according to an embodiment of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention; Figure 4 Schematic diagram of the internal structure of an embodiment of the present invention; Figure 5 For the embodiment of the present invention Figure 4 A schematic diagram of the enlarged structure at A in the middle; Figure 6 This is a schematic diagram of the internal structure of the annular shell according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of terminal B according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the scraping mechanism according to an embodiment of the present invention; Fig. 9 This is a schematic cross-sectional structural diagram of a scraping mechanism according to an embodiment of the present invention; Fig.10 This is a schematic diagram of the internal structure of the scraping mechanism according to an embodiment of the present invention; Fig.11 This is a schematic diagram of the circular friction trace of terminal B in an embodiment of the present invention; Fig.12 It is a schematic diagram of axial friction traces in an embodiment of the present invention.

[0024] In the figure: 100, male connector; 101, limit snap ring; 102, terminal A; 103, cylindrical housing; 104, limit convex ring; 105, annular slideway; 106, sealing ring; 107, sliding section; 108, sealing section; 109, retaining ring; 110, inclined surface; 200, female connector; 201, fastening mechanism; 202, terminal B; 203, scraping mechanism; 204, pointed cone; 205, docking ring; 206, limit plate ; 207, limit slide; 208, clamping block; 209, wedge section; 210, guide column; 211, annular shell; 212, notch; 213, turntable cavity; 214, turntable; 215, anti-slip teeth; 216, positioning assembly; 217, annular groove; 218, grinding sleeve; 219, scraper; 220, Z-shaped spring; 221, convex ring; 222, strip slide; 223, slider; 224, inclined groove. DETAILED DESCRIPTION

[0025] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] Embodiment 1: Although the common cable connectors currently available on the market can meet the basic needs of the robot arm in some aspects, they also have many limitations.

[0028] For example, robotic arms usually work in harsh environments, such as high temperature, low temperature, humidity, oil, vibration, etc. The material and structure of traditional cable connectors are prone to oxidation of terminals in such environments, resulting in poor contact and affecting the reliability and service life of the robotic arm.

[0029] After some connectors are connected, dust is likely to remain in the gaps due to long-term use, making disassembly and assembly difficult, and it is difficult to remove them quickly during maintenance.

[0030] The present invention aims to solve these problems and provides a composite robot arm connector for connecting thick single cables.

[0031] like Figure 1-Figure 3 As shown, it includes a male head 100 and a female head 200. The outer surface of the male head 100 and the female head 200 is covered with a layer of stainless steel material, preferably 316L stainless steel. 316L stainless steel has excellent corrosion resistance and can resist erosion by high temperature, low temperature, moisture, oil and most chemical substances. The male head 100 and the female head 200 are plugged into each other. A limit clamp 101 is provided on the male head 100, and a fastening mechanism 201 for clamping the limit clamp 101 is provided on the female head 200. Compared with the traditional screw fastening method, no tools are required, which improves the assembly and disassembly efficiency. The male head 100 is internally slidably provided with a terminal A102, and the female head 200 is internally provided with a terminal B202. The terminal A102 and the terminal B202 are plugged into each other. The traditional connector has no buffer mechanism, and vibration can easily lead to poor contact. The present application connects a buffer mechanism to the terminal A102. The buffer structure includes a buffer spring sleeved on the terminal A102, and a retaining ring 109 is also arranged inside the male plug 100. One end of the buffer spring abuts against the retaining ring 109, and the other end of the buffer spring abuts against the side of the terminal A102, which can absorb vibration and impact and extend the service life. A scraping mechanism 203 for polishing the outer surface of the terminal B202 is arranged on the outer surface of the terminal B202. The scraping mechanism 203 will slightly scrape or polish the outer surface of the terminal B202 to remove the oxide layer on the surface to ensure that the terminal B202 is in good contact with the terminal A102.

[0032] The male connector 100 includes a cylindrical shell 103 with openings at both ends. The diameter of one end of the cylindrical shell 103 close to the female connector 200 is larger than the diameter of the other end. A limiting convex ring 104 is arranged inside the cylindrical shell 103. The terminal A102 is slidably arranged in the limiting convex ring 104. The terminal A102 has a U-shaped structure, which increases the contact area with the terminal B202 and reduces the resistance. A plum blossom-shaped cone 204 is arranged on the outer side of the end of the terminal B202. The terminal B202 is inserted into the terminal A102. The cone 204 protrudes from the outer surface of the terminal B202 by 0.1 mm, and can pierce the oxide layer that may be formed on the surface of the terminal A102 during the plugging and unplugging process. By increasing the contact area and setting the cone 204, the reliability and conductivity of the contact are doubly guaranteed.

[0033] A circle of annular slideway 105 is integrally connected to the side surface of the limiting convex ring 104, and a circle of sealing ring 106 is slidably connected to the annular slideway 105; The sealing ring 106 includes an integrally connected sliding section 107 and a sealing section 108. The sliding section 107 is arranged in a bent shape and slidingly arranged in the annular slideway 105. The sealing section 108 is arranged in a circular ring shape, and the inner ring of the sealing section 108 is clamped on the outer surface of the terminal A102.

[0034] When terminal B202 is inserted into terminal A102, terminal A102 is squeezed and moves backward. In order to improve the sealing effect, the sealing ring 106 will move together. The sliding section 107 of the sealing ring 106 has a certain elasticity, and the sealing section 108 always plays a sealing role during the sliding process, so as to prevent dust from entering the connector during use and affecting its service life.

[0035] The female connector 200 includes a docking ring 205 that matches the large diameter end of the cylindrical shell 103. A circle of gasket grooves is provided on the outer surface of the docking ring 205, and a rubber pad is provided in the gasket groove. After the docking ring 205 and the cylindrical shell 103 are docked, a tight fit is formed, and the provided rubber pad can seal the joint to reduce dust entry. Moreover, the rubber pad is soft, so that the docking of the docking ring 205 and the cylindrical shell 103 can be flexible. Then, the fastening mechanism 201 is gradually tightened, and the terminal B202 is installed on the inner ring of the docking ring 205, and the fastening mechanism 201 is installed on the outer side of the docking ring 205.

[0036] Embodiment 2: This embodiment is implemented on the basis of the above-mentioned embodiment 1.

[0037] like Figure 4-Figure 10 As shown, the specific structure of the fastening mechanism 201 is specifically disclosed, wherein the fastening mechanism 201 includes a limit plate 206, and at least three limit grooves 207 are opened on the limit plate 206. A clamping block 208 is slidably connected in the three limit grooves 207. The clamping block 208 is in a "J" shape, and a wedge cut surface 209 is arranged at one end of the clamping block 208. The outer side of the limit clamping ring 101 is provided with an inclined surface 110 matching the wedge cut surface 209. When the clamping block 208 moves toward the limit clamping ring 101, the wedge cut surface 209 of the clamping block 208 abuts against the inclined surface 110 on the limit clamping ring 101, which is used to clamp the male head 100 and the female head 200. The other end of the clamping block 208 is fixedly connected with a guide column 210.

[0038] A circular shell 211 is connected to one side of the limit plate 206. A notch 212 is provided on the circular shell 211. A turntable cavity 213 is provided in the circular shell 211. A turntable 214 is rotatably provided in the turntable cavity 213. The turntable 214 is arranged in a circular ring shape. The turntable 214 is provided with anti-slip teeth 215 at the position of the notch 212. A positioning component 216 for fixing the turntable 214 is also installed on the circular shell 211.

[0039] The positioning assembly 216 can adopt a common positioning pin structure, including two main parts: a positioning pin and an elastic mechanism. The positioning pin is arranged on the side wall of the annular shell 211, and its specific position is located near the notch 212 and deviates from the center line of the notch 212 by a certain distance. The positioning pin is cylindrical, and its diameter matches the diameter of the preset positioning hole on the turntable 214. The elastic mechanism is installed inside the annular shell 211 and is connected to the positioning pin to provide elastic support and reset force for it.

[0040] The turntable 214 is also provided with an inclined groove 224 that matches the position of the limiting slide groove 207. The other end of the guide column 210 is slidably inserted in the inclined groove 224. When the turntable 214 rotates, the clamping block 208 is driven to move along the limiting slide groove 207 due to the limiting effect of the guide column 210.

[0041] When the connector is used, the male connector 100 and the female connector 200 are first connected. After the connection, the anti-skid teeth 215 at the notch 212 are rotated with fingers to rotate the turntable 214. The rotation of the turntable 214 can make the inclined groove 224 rotate accordingly. Since one end of the guide column 210 is inserted into the inclined groove 224, the rotation of the turntable 214 will push the guide column 210 through the inclined surface of the inclined groove 224, thereby driving the clamping block 208 to move along the limiting slide groove 207 toward the limiting clamping ring 101. When the clamping block 208 moves to the position of the limiting clamping ring 101, the wedge cut surface 209 of the clamping block 208 will abut against the inclined surface 110 on the limiting clamping ring 101. Due to the mutual cooperation between the wedge cut surface 209 and the inclined surface 110, the clamping block 208 will gradually squeeze inward, thereby firmly clamping the male connector 100 and the female connector 200 to achieve a stable connection.

[0042] After the clamping operation is completed, the positioning assembly 216 is used to fix the rotating disk 214 to prevent it from accidentally rotating, thereby ensuring the stability of the connection.

[0043] When the connection needs to be released, the turntable 214 only needs to be rotated in the opposite direction again to make the clamping block 208 move in the opposite direction along the limiting slide groove 207 and disengage from the limiting clamping ring 101, so that the male connector 100 and the female connector 200 can be easily separated.

[0044] The wedge cut surface 209 of the clamping block 208 cooperates with the inclined surface 110 of the limiting clamping ring 101 to form a self-locking structure, which ensures the stability and reliability of the connection and effectively prevents accidental loosening. The fastening mechanism 201 has no wearing parts, has a long service life, can be reused many times, and reduces maintenance costs. This design is suitable for various types of connectors. It only needs to adjust the size of the limiting slide groove 207 and the clamping block 208 to adapt to different connection requirements, which improves the versatility of the design.

[0045] Although in the above embodiment, the fastening mechanism 201 can effectively achieve a stable connection between the male connector 100 and the female connector 200, the surface of the terminal B202 may increase the contact resistance due to oxidation or contamination during long-term use of the connector, thereby affecting the stability of the electrical performance.

[0046] Therefore, in order to further improve the electrical performance of the connector, the present application also discloses that the inner ring of the turntable 214 is provided with a circle of splines, the annular shell 211 and the docking ring 205 are provided with annular grooves 217 that are interconnected, the splines of the turntable 214 extend into the annular grooves 217, the scraping mechanism 203 includes a polishing sleeve 218 arranged between the docking ring 205 and the terminal B202, and the interior of the polishing sleeve 218 is provided with two groups of scraping pieces 219 arranged in a semicircular shape, one side of the scraping piece 219 is attached to the outer surface of the terminal B202, and the other side of the scraping piece 219 is connected to a Z-shaped spring piece 220, and the outer surface of the polishing sleeve 218 is provided with a circle of convex rings 221, and the convex rings 221 are provided with keys matching the splines, so that the rotation of the turntable 214 drives the rotation of the polishing sleeve 218.

[0047] A strip-shaped slide groove 222 is formed on the inner wall of the grinding sleeve 218 , and a slider 223 is connected to the other end of the Z-shaped spring piece 220 . The slider 223 is slidably disposed in the strip-shaped slide groove 222 .

[0048] Before using the connector, the turntable 214 can be rotated idle to make the turntable 214 drive the grinding sleeve 218 to rotate, and the grinding sleeve 218 drives the internal scraper 219 to rotate. Due to the setting of the Z-shaped spring 220, the scraper 219 applies a certain pressure to the outer surface of the terminal B202. The scraper 219 scrapes and cleans the surface of the terminal B202 in a circular motion during the rotation process. Fig.11 As shown, the oxide layer or contaminants are removed and the conductive properties of the terminal B202 surface are restored.

[0049] The outer end surface of the terminal B202 is flush with the outer end surface of the grinding sleeve 218, so that the scraping mechanism 203 can grind the end of the terminal B202 in a circular motion.

[0050] Through the above design, the scraping mechanism 203 can clean and maintain the surface of the terminal B202 before the connector is connected, ensuring that the contact resistance is always kept at a low level, thereby significantly improving the electrical performance and service life of the connector. At the same time, the scraping sheet 219 and the Z-shaped spring sheet 220 have a simple design structure, are easy to manufacture and install, and further reduce production costs.

[0051] During the use of the connector, the scraped part of the terminal B202 is inserted into the terminal A102. Since the outer side of the end of the terminal B202 is provided with a plum blossom-shaped pointed cone 204, the oxide layer that may be formed on the surface of the terminal A102 can be pierced during the insertion of the terminal B202 into the terminal A102, generating a scratch path that is consistent with the axial direction of the terminal A102, such as Fig.12 shown.

[0052] It should be further explained that, when terminal B202 is inserted into terminal A102, the end of terminal A102 will abut against the end face of the scraper 219. Since a strip groove 222 is provided on the inner wall of the grinding sleeve 218, the Z-shaped spring piece 220 slides in the strip groove 222 through the slider 223. Therefore, terminal A102 will squeeze the scraper 219, causing the scraper 219 to move inward. During the movement of the scraper 219, the scraper 219 realizes axial scraping and cleaning of the surface of the terminal B202.

[0053] After the connection is completed, the turntable 214 is then rotated. On the one hand, the turntable 214 drives the clamping block 208 to move along the limiting slide groove 207 toward the limiting clamping ring 101 to firmly clamp the male head 100 and the female head 200. On the other hand, the scraper 219 is further rotated to scrape and clean the rear side of the terminal B202. During this process, the axial and circular motions of the scraper 219 effectively remove the tiny dirt or oxide layer that may exist on the surface of the terminal B202, ensuring that the contact surface between the terminal B202 and the terminal A102 is always kept clean, reducing the increase in contact resistance, and further improving the electrical performance and reliability of the connector.

[0054] Specific working principle: When idling: Terminal B202 is not inserted into terminal A102. Under the action of the Z-shaped spring piece 220, the end face of the scraper 219 slightly fits the outer surface of the terminal B202. The turntable 214 drives the grinding sleeve 218 to rotate through the spline, and the grinding sleeve 218 drives the internal scraper 219 to make a circular motion around the axis of the terminal B202. During the rotation process, the end face of the scraper 219 is in close contact with the outer surface of the terminal B202, and the surface of the terminal B202 is scraped and cleaned to remove the oxide layer, dirt and dust on the surface. Due to the action of the Z-shaped spring piece 220, the scraper 219 applies a certain pressure to the terminal B202 to ensure the scraping effect.

[0055] When docked: The turntable 214 is in an idling state, and the scraper 219 has pre-cleaned the terminal B202. Insert the terminal B202 into the terminal A102. As the terminal B202 is inserted into the terminal A102, the terminal A102 moves backward and squeezes the buffer spring, and at the same time, the plum blossom-shaped cone 204 on the outside of the end of the terminal B202 will pierce the oxide layer that may be formed on the surface of the terminal A102. In this process, the insertion of the terminal B202 will push the scraper 219 to move inward, and the scraper 219 will be in close contact with the side of the terminal B202, and slide along the axial direction of the terminal B202 to achieve axial scraping and cleaning of the surface of the terminal B202. After the terminal B202 is fully inserted into the terminal A102, the end of the terminal A102 will be against the end face of the scraper 219. At this time, the terminal A102 and the terminal B202 have established an electrical connection.

[0056] After the plug-in is completed: The turntable 214 is rotated, and the turntable 214 drives the clamping block 208 to move through the inclined groove 224 and the guide column 210. The wedge cut surface 209 of the clamping block 208 abuts against the inclined surface 110 of the limit clamping ring 101, and the male head 100 and the female head 200 are firmly clamped. While locking, the turntable 214 continues to drive the grinding sleeve 218 to rotate through the spline, and the grinding sleeve 218 drives the scraper 219 to continue to make a circular motion around the axis of the terminal B202, and continuously scrapes and cleans the rear side of the terminal B202 (the end close to the docking ring 205). The turntable 214 is locked by the positioning assembly 216, the male head 100 and the female head 200 are firmly connected, the terminal A102 and the terminal B202 maintain good electrical contact, and the scraper 219 continuously cleans the terminal B202 to ensure that the contact resistance is always kept at a low level.

[0057] Through the above specific implementations, those skilled in the art can easily implement the present invention. However, it should be understood that the present invention is not limited to the above specific implementations. On the basis of the disclosed implementations, those skilled in the art can arbitrarily combine different technical features to achieve different technical solutions.

Claims

1. A composite mechanical arm connector for connecting thick single-cable cables, comprising a male head (100) and a female head (200), wherein the male head (100) and the female head (200) are both made of stainless steel, and the male head (100) and the female head (200) are plugged into each other, and are characterized in that: The male head (100) is provided with a limit clamp ring (101), the female head (200) is provided with a fastening mechanism (201) for clamping the limit clamp ring (101), the male head (100) is provided with a terminal A (102) inside, the female head (200) is provided with a terminal B (202) inside, the terminal A (102) and the terminal B (202) are plugged into each other, the terminal A (102) is connected with a buffer structure, and the outer surface of the terminal B (202) is provided with a scraping mechanism (203) for polishing the outer surface of the terminal B (202).

2. The composite mechanical arm connector for connecting thick single cables according to claim 1, characterized in that: The male connector (100) comprises a cylindrical shell (103) with openings at both ends, the diameter of one end of the cylindrical shell (103) close to the female connector (200) being larger than the diameter of the other end, a limiting convex ring (104) being arranged inside the cylindrical shell (103), the terminal A (102) being slidably arranged inside the limiting convex ring (104), the terminal A (102) being of a U-shaped structure, a plum blossom-shaped pointed cone (204) being arranged outside the end of the terminal B (202), and the terminal B (202) being inserted into the terminal A (102).

3. The composite mechanical arm connector for connecting thick single cables according to claim 2, characterized in that: A circle of annular slideway (105) is integrally connected to the side surface of the limiting convex ring (104), and a circle of sealing ring (106) is slidably connected to the annular slideway (105); The sealing ring (106) comprises an integrally connected sliding section (107) and a sealing section (108); the sliding section (107) is arranged in a bent shape, and the sliding section (107) is slidably arranged in the annular slideway (105); the sealing section (108) is arranged in a circular ring shape, and the inner ring of the sealing section (108) is clamped on the outer surface of the terminal A (102).

4. The composite mechanical arm connector for connecting thick single cables according to claim 2, characterized in that: The female connector (200) comprises a docking ring (205) matching the large diameter end of the cylindrical housing (103), the terminal B (202) is mounted on the inner ring of the docking ring (205), and the fastening mechanism (201) is mounted on the outer side of the docking ring (205).

5. The composite mechanical arm connector for connecting thick single cables according to claim 4, characterized in that: The fastening mechanism (201) comprises a limit plate (206), the limit plate (206) is provided with at least three limit slots (207), a clamping block (208) is slidably connected in the three limit slots (207), the clamping block (208) is in a "J" shape, one end of the clamping block (208) is provided with a wedge cut surface (209), the outer side of the limit clamping ring (101) is provided with an inclined surface (110) matching the wedge cut surface (209), when the clamping block (208) moves toward the limit clamping ring (101), the wedge cut surface (209) of the clamping block (208) abuts against the inclined surface (110) on the limit clamping ring (101), so as to clamp the male head (100) and the female head (200), and the other end of the clamping block (208) is fixedly connected with a guide column (210).

6. The composite mechanical arm connector for connecting thick single cables according to claim 5, characterized in that: A circular shell (211) is connected to one side of the limiting disk (206). A notch (212) is provided on the circular shell (211). A turntable cavity (213) is provided in the circular shell (211). A turntable (214) is rotatably provided in the turntable cavity (213). The turntable (214) is arranged in a circular ring shape. The turntable (214) is provided with anti-slip teeth (215) at the position of the notch (212). A positioning component (216) for fixing the turntable (214) is also installed on the circular shell (211).

7. The composite mechanical arm connector for connecting thick single cables according to claim 6, characterized in that: The inner ring of the rotating disk (214) is provided with a circle of splines, the annular housing (211) and the docking ring (205) are provided with annular grooves (217) that are interconnected, the splines of the rotating disk (214) extend into the annular grooves (217), the scraping mechanism (203) comprises a grinding sleeve (218) arranged between the docking ring (205) and the terminal B (202), two groups of scraping pieces (219) arranged in a semicircular shape are arranged inside the grinding sleeve (218), one side of the scraping piece (219) is attached to the outer surface of the terminal B (202), and the other side of the scraping piece (219) is connected to a Z-shaped spring piece (220), the outer surface of the grinding sleeve (218) is provided with a circle of convex rings (221), and the convex rings (221) are provided with keys matching the splines, so that the rotation of the rotating disk (214) drives the rotation of the grinding sleeve (218).

8. The composite mechanical arm connector for connecting thick single cables according to claim 7, characterized in that: A strip-shaped slide groove (222) is provided on the inner wall of the grinding sleeve (218); the other end of the Z-shaped spring sheet (220) is connected to a slider (223); and the slider (223) is slidably disposed in the strip-shaped slide groove (222).

9. The composite mechanical arm connector for connecting thick single cables according to claim 6, characterized in that: The rotating disk (214) is also provided with an inclined groove (224) that matches the position of the limiting sliding groove (207), and the other end of the guide column (210) is slidably inserted into the inclined groove (224). When the rotating disk (214) rotates, the limiting effect of the guide column (210) drives the clamping block (208) to move along the limiting sliding groove (207).

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