Aluminum alloy cable connector

Abstract

The invention relates to an aluminum alloy cable connector, and belongs to the technical field of cable installation. The aluminum alloy cable connector comprises a crimping pipe, two insulating threaded pipes and two threaded sleeves, the two insulating threaded pipes are fixedly connected to the two ends of the crimping pipe respectively, and the two threaded sleeves are in threaded connection to the opposite ends of the two insulating threaded pipes respectively; the sealing device is arranged on the surface of the crimping pipe in a sleeving manner; a user only needs to rotate the threaded sleeve to perform internal and external sealing operation at the same time, and in the process, the first internal sealing mechanism not only can perform double sealing on a gap between the aluminum alloy cable and the insulating threaded pipe, but also can firmly bond the aluminum alloy cable and the insulating threaded pipe together, so that the sealing effect is good. Therefore, the aluminum alloy cable protection layer and the insulation threaded pipe are connected more tightly, and the overall connection strength of the connector is improved.

Description

Technical Field

[0001] The invention relates to the technical field of cable installation, and in particular to an aluminum alloy cable connector. Background Art

[0002] Cable connection is the main operation item in power construction. It is mainly due to the influence of manufacturing process, transportation capacity, etc., and the length of cable preparation is limited. In order to ensure the integrity and continuity of the cable line, the cable connection position needs to use a cable connector to connect two adjacent cables together. At present, the intermediate joint is the most common connector used for aluminum alloy cables. Since the existing intermediate joints are mostly equipped with heat shrink tubes as insulation and waterproof structures, when the user installs the heat shrink tube, the user needs to use flame heating to make the heat shrink tube shrink evenly on the cable surface. This not only requires that there is no obstruction near the installation position of the heat shrink tube, otherwise it is difficult for the user to completely cover the heat shrink tube with the heating device, but also the user needs to move the heating device at a uniform speed to avoid overheating or uneven heating, which will undoubtedly increase the installation difficulty of the user and inconvenience the user to quickly perform the docking operation of the aluminum alloy cable. Summary of the invention

[0003] Based on this, it is necessary to provide an aluminum alloy cable connector to address the problem that the existing intermediate joints equipped with heat shrink tubes have high requirements on the installation environment and installation technology and low practicality.

[0004] An aluminum alloy cable connector, comprising: a crimping tube, two insulating threaded tubes and two threaded sleeves, wherein the two insulating threaded tubes are respectively fixedly connected to the two ends of the crimping tube, and the two threaded sleeves are respectively threadedly connected to the opposite ends of the two insulating threaded tubes; A sealing device, wherein the sealing device is sleeved on the surface of the crimping tube, and the two ends of the sealing device respectively penetrate the two insulating threaded tubes and contact the adjacent threaded sleeves; Wherein, the sealing device includes two inner sealing mechanisms, two inner second sealing mechanisms and an outer sealing mechanism, the inner sealing mechanism is fixedly connected to the inside of the insulating threaded tube, one end of the inner sealing mechanism is in contact with the threaded sleeve, the inner second sealing mechanism is installed on the inner side of the threaded sleeve, one end of the inner second sealing mechanism is in contact with the inner sealing mechanism, the outer sealing mechanism is sleeved on the surface of the crimping tube, and the two ends of the outer sealing mechanism respectively penetrate the two insulating threaded tubes and contact the adjacent threaded sleeves.

[0005] Furthermore, the inner sealing mechanism includes a sealing gasket, a ring frame, a rubber storage bag, a ring, a needle and a first rubber bellows, the sealing gasket is embedded and installed at the connection between the insulating threaded tube and the crimping tube, the ring frame is fixedly connected to the inside of the insulating threaded tube, one end of the threaded sleeve is in contact with the ring frame at this time, the rubber storage bag is embedded and installed in the inside of the ring frame, the inside of the rubber storage bag is filled with sealant, a second ring groove is provided on the inner side of the ring frame, a through hole connected to the second ring groove is provided on one end of the ring frame, the ring is slidably connected to the inside of the second ring groove, the needle is fixedly connected to one end of the ring, one end of the needle passes through the through hole and the rubber storage bag in sequence and extends to the outside of the ring frame, the first rubber bellows is fixedly connected to the inside of the ring frame, one end of the first rubber bellows is fixedly connected to the inside of the ring, and the first rubber bellows is in a compressed state at this time.

[0006] In one of the embodiments, the threaded sleeve automatically drives an inner sealing mechanism during the process of rotational installation. The inner sealing mechanism can not only double-seal the gap between the aluminum alloy cable and the insulating threaded tube, but also firmly bond the aluminum alloy cable and the insulating threaded tube together, so that the protective layer of the aluminum alloy cable and the insulating threaded tube are more tightly connected, thereby improving the overall connection strength of the connector. Compared with the existing sealing method of the heat shrink tube, the user only needs to rotate two threaded sleeves to perform the dual operations of sealing and locking, which can not only simplify the connection steps between the two aluminum alloy cables, making the user's installation operation easier and less difficult, but also does not require sufficient operating space to meet the installation requirements in narrow spaces.

[0007] Furthermore, a guide hole is provided on the surface of the insulating threaded tube, and the external sealing mechanism includes two second rubber bellows, which are respectively fixedly connected to the opposite ends of the two insulating threaded tubes, and the second rubber bellows are sleeved on the surface of the crimping tube. A sealing ring is fixedly connected to the inside of the second rubber bellows, and the two sealing rings are in contact with each other. One end of the sealing ring is fixedly connected to a guide rod, and one end of the guide rod passes through the guide hole and contacts with the threaded sleeve.

[0008] In one of the embodiments, the rotational installation of the threaded sleeve can automatically drive the external sealing mechanism to seal the compression tube, which can perform internal and external sealing operations simultaneously without the need for separate adjustments by the user, further reducing the user's operating steps and making the user's installation operation easier.

[0009] Furthermore, a first liquid guide channel connected to the guide hole is opened inside the insulating threaded tube, a second liquid guide channel connected to the first liquid guide channel is opened on the surface of the threaded sleeve, and a third liquid guide channel connected to the first liquid guide channel is opened on the surface of the guide rod.

[0010] In one of the embodiments, a sealing rubber block is formed by condensation of the first liquid guiding channel, the second liquid guiding channel and the third liquid guiding channel, which can interweave the sealing rubber ring and the insulating threaded tube, so that the sealing rubber ring and the insulating threaded tube restrain each other, thereby improving the strength of the sealing rubber ring to lock the insulating threaded tube and the aluminum alloy cable protective layer together, thereby ensuring the sealing effect of the sealing rubber ring, and at the same time, the sealing rubber block can also restrain the threaded sleeve and the guide rod at the same time, locking the threaded sleeve and the guide rod firmly in place, which not only reduces the probability of loosening of the threaded sleeve, but also enables the external sealing mechanism to seal the crimping tube more stably, further improving the overall sealing effect of the connector.

[0011] Furthermore, a first annular groove is provided at one end of the threaded sleeve, and the inner two sealing mechanisms include an extrusion cylinder, a first annular airbag, an air guide tube and a second annular airbag. The extrusion cylinder is slidably connected to the interior of the first annular groove, and one end of the extrusion cylinder is in contact with the ring frame. The first annular airbag is placed inside the first annular groove, and the first annular airbag is arranged between the first annular groove and the extrusion cylinder. The first annular airbag is in a compressed state at this time, and the air guide tube is fixedly connected and connected to one end of the first annular airbag, and one end of the air guide tube passes through the first annular groove and extends to the outside of the threaded sleeve, and the second annular airbag is fixedly connected to the inner side of the threaded sleeve, and one end of the air guide tube is fixedly connected and connected to the second annular airbag, and the second annular airbag is in an expanded state at this time.

[0012] In one of the embodiments, the second inner sealing mechanism can expand on its own outside the first inner sealing mechanism and wrap around the surface of the aluminum alloy cable. At this time, the gap between the threaded sleeve and the aluminum alloy cable is also blocked, further improving the sealing effect of the connector. At the same time, when the second inner sealing mechanism is burned by the aluminum alloy cable, it can release inert gas on its own to dilute the oxygen around the fire point, so as to achieve the effect of suppressing the fire.

[0013] Further, a mounting groove communicating with the second ring groove is provided inside the ring frame, a guide opening communicating with the mounting groove is provided on the surface of the ring ring, and the inner sealing mechanism further comprises a locking assembly, the locking assembly is fixedly connected to the inside of the guide opening, both ends of the locking assembly penetrate to the outside of the guide opening, and one end of the locking assembly is rotatably connected to the mounting groove; Among them, the locking assembly includes an extrusion plate and a guide rod, the extrusion plate is rotatably connected to the inside of the mounting groove, one end of the extrusion plate passes through the guide opening and extends to the inner side of the ring, a sliding opening is opened on the surface of the extrusion plate, the guide rod is slidably connected to the inside of the sliding opening, and both ends of the guide rod pass through the sliding opening and are fixedly connected to the guide opening.

[0014] In one of the embodiments, the locking assembly can be sunk into the protective layer on the surface of the aluminum alloy cable under the guidance of the ring, which can not only improve the connection strength between the insulating threaded tube and the aluminum alloy cable, but also the extrusion plate can increase the resistance to outward movement of the aluminum alloy cable when it loosens outward, making the shape of the sealing rubber ring more stable, thereby ensuring the sealing effect of the sealing rubber ring.

[0015] Furthermore, a liquid conducting hole is provided on the surface of the needle, one opening of the liquid conducting hole is arranged inside the plastic storage bag, and the other opening of the liquid conducting hole is arranged outside the ring frame.

[0016] In one embodiment, the liquid guide hole can accelerate the outflow of the sealant to increase the discharge rate of the sealant.

[0017] Furthermore, a rubber sleeve is provided on the surface of the rubber storage bag, and the rubber sleeve is always compressed.

[0018] In one embodiment, when the needle pierces the plastic storage bag, the force applied can accelerate the shrinkage and shrivelup of the plastic storage bag, thereby reducing the retention rate of the sealant inside the plastic storage bag, thereby increasing the effective use rate of the sealant.

[0019] Furthermore, the first annular airbag and the second annular airbag are both filled with inert gas.

[0020] In one of the embodiments, when the aluminum alloy cable catches fire and burns through the second annular airbag, the inert gas quickly leaks out from the rupture of the second annular airbag. At this time, the inert gas can flow to the fire site, which can reduce the fire rate on the surface of the aluminum alloy cable, thereby achieving the purpose of suppressing the fire.

[0021] Furthermore, an annular positioning groove is formed at one end of one of the sealing rings, and a reinforcing ring fixedly connected to the other sealing ring is inserted into the annular positioning groove.

[0022] In one of the embodiments, when the two sealing rings are just butted together, the reinforcement ring is also fully inserted into the annular positioning groove. At this time, the two sealing rings are restrained by each other through the reinforcement ring and the annular positioning groove, which can make the connection between the two sealing rings tighter, thereby improving the sealing effect of the compression tube.

[0023] 1. For the above aluminum alloy cable connector, the user only needs to rotate the threaded sleeve to perform internal and external sealing operations at the same time. In this process, the inner sealing mechanism can not only double-seal the gap between the aluminum alloy cable and the insulating threaded tube, but also firmly bond the aluminum alloy cable and the insulating threaded tube together, so that the protective layer of the aluminum alloy cable and the insulating threaded tube are more tightly connected, thereby improving the overall connection strength of the connector. Compared with the sealing method of the existing heat shrink tube, the user only needs to rotate the two threaded sleeves to perform the dual operations of sealing and locking, which can not only simplify the connection steps between the two aluminum alloy cables, but also make the user's installation work easier and less difficult, and at the same time, there is no need to leave enough operating space to meet the installation requirements in narrow spaces; 2. The sealing rubber block formed by condensation of the first liquid guide channel, the second liquid guide channel and the third liquid guide channel can interweave the sealing rubber ring and the insulating threaded tube, so that the sealing rubber ring and the insulating threaded tube restrain each other, thereby improving the strength of the sealing rubber ring to lock the insulating threaded tube and the aluminum alloy cable protective layer together, thereby ensuring the sealing effect of the sealing rubber ring. At the same time, the sealing rubber block can also restrain the threaded sleeve and the guide rod at the same time, and lock the threaded sleeve and the guide rod firmly in place, which not only reduces the probability of the threaded sleeve loosening, but also enables the external sealing mechanism to seal the compression tube more stably, further improving the overall sealing effect of the connector; 3. The inner second sealing mechanism can expand on the outside of the inner first sealing mechanism and wrap around the surface of the aluminum alloy cable. At this time, the gap between the threaded sleeve and the aluminum alloy cable is also blocked, further improving the sealing effect of the connector. At the same time, when the inner second sealing mechanism is burned by the aluminum alloy cable, it can release inert gas by itself to dilute the oxygen around the fire point to achieve the effect of suppressing the fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a cross-sectional schematic diagram of the present invention; Figure 3 for Figure 2 A magnified view of middle; Figure 4 for Figure 3 Enlarged view of middle B; Figure 5for Figure 2 Enlarged view of middle C; Figure 6 for Figure 2 Enlarged view of middle D; Figure 7 It is an exploded schematic diagram of a sealing mechanism in the present invention; Figure 8 It is an exploded schematic diagram of the threaded sleeve and the inner secondary sealing mechanism in the present invention; Fig. 9 It is a schematic diagram of the explosion of the internal and external sealing mechanism of the present invention.

[0026] Reference numerals: 100, crimping tube; 200, insulating threaded tube; 210, guide hole; 220, first liquid guide channel; 300, threaded sleeve; 310, second liquid guide channel; 320, first annular groove; 400, sealing device; 410, inner sealing mechanism; 411, sealing pad; 412, ring frame; 4121, second annular groove; 4122, perforation; 4123, mounting groove; 413, plastic storage bag; 414, ring; 4141, guide port; 415, needle; 4151, liquid guide hole; 416 , first rubber bellows; 417, locking assembly; 4171, extrusion plate; 41711, slide; 4172, guide rod; 418, rubber sleeve; 420, two inner sealing mechanisms; 421, extrusion cylinder; 422, first annular airbag; 423, air guide tube; 424, second annular airbag; 430, outer sealing mechanism; 431, second rubber bellows; 432, sealing ring; 4321, annular positioning groove; 433, guide rod; 4331, third liquid guide channel; 434, reinforcement ring. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of the present invention are for illustrative purposes only and do not represent the only implementation method.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] Unless otherwise defined, all technical and scientific terms used in the specification of the present invention have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in the specification of the present invention includes any and all combinations of one or more related listed items.

[0032] Combine the following Figure 1 - Fig. 9 The aluminum alloy cable connector of the present invention is described.

[0033] In one embodiment, an aluminum alloy cable connector includes: a crimping tube 100, both ends of the crimping tube 100 are fixedly connected and communicated with an insulating threaded tube 200, the opposite ends of the two insulating threaded tubes 200 are threadedly connected with a threaded sleeve 300, and a sealing device 400 is sleeved on the surface of the crimping tube 100, and both ends of the sealing device 400 respectively penetrate the two insulating threaded tubes 200 and contact with the adjacent threaded sleeves 300; the sealing device 400 includes two inner sealing mechanisms 410 and two outer sealing mechanisms 411. 30, an inner sealing mechanism 410 is fixedly connected to the inside of the insulating threaded tube 200, one end of the inner sealing mechanism 410 is in contact with the threaded sleeve 300, one end of the inner sealing mechanism 410 is provided with an inner second sealing mechanism 420, one end of the inner second sealing mechanism 420 penetrates the threaded sleeve 300 and extends to the inner side of the threaded sleeve 300, an outer sealing mechanism 430 is sleeved on the surface of the crimping tube 100, and two ends of the outer sealing mechanism 430 respectively penetrate two insulating threaded tubes 200 and contact with adjacent threaded sleeves 300.

[0034] like Figure 3 , Figure 4 and Figure 7 As shown, the inner sealing mechanism 410 includes a sealing gasket 411, which is embedded and installed at the connection between the insulating threaded tube 200 and the crimping tube 100. The inside of the insulating threaded tube 200 is fixedly connected with a ring frame 412, and one end of the threaded sleeve 300 is in contact with the ring frame 412. A glue storage bag 413 is embedded and installed inside the ring frame 412, and the inside of the glue storage bag 413 is filled with sealant. A second ring groove 4121 is provided on the inner side of the ring frame 412, and a through hole 4122 connected to the second ring groove 4121 is provided at one end of the ring frame 412. The inside of the second ring groove 4121 is slidably connected with a ring 414, one end of the ring 414 is fixedly connected to a needle 415, one end of the needle 415 passes through the perforation 4122 and the plastic storage bag 413 in sequence and extends to the outside of the ring frame 412, the inside of the ring frame 412 is fixedly connected to a first rubber bellows 416, one end of the first rubber bellows 416 is fixedly connected to the inner side of the ring 414, and the first rubber bellows 416 is in a compressed state at this time. It should be noted that the material of the sealant needs to be selected according to the needs and actual conditions of the user, which will not be repeated here. At the same time, the volume of the sealant should be larger than that of the aluminum alloy cable, the insulating threaded tube 200, and the ring The frame 412 and the first rubber bellows 416 cooperate to form a closed space, the volume of the first liquid conducting channel 220, the second liquid conducting channel 310 and the third liquid conducting channel 4331 added together. When the needle 415 is not in use, the production personnel can use a small amount of instant adhesive to stick it inside the perforation 4122 to prevent the needle 415 from piercing the plastic storage bag 413 in advance. At the same time, the user can sense whether the needle 415 moves normally through the frustration of the instant adhesive broken by the needle 415, so as to improve the installation quality of the connector; the surface of the needle 415 is provided with a liquid conducting hole 4151, one of which is An opening is arranged inside the rubber storage bag 413, and another opening of the liquid guide hole 4151 is arranged outside the ring frame 412. The liquid guide hole 4151 can accelerate the outflow of the sealant to speed up the discharge rate of the sealant; the surface of the rubber storage bag 413 is provided with a rubber sleeve 418, and the rubber sleeve 418 is always in compression. The rubber sleeve 418 can always apply a pressure to the rubber storage bag 413. When the needle 415 pierces the rubber storage bag 413, the applied force can accelerate the shrinkage and shrunkenness of the rubber storage bag 413, thereby reducing the retention rate of the sealant inside the rubber storage bag 413, thereby improving the effective use rate of the sealant.

[0035] like Figure 3 , Figure 8 and Fig. 9As shown, the insulating threaded tube 200 has a first liquid guiding channel 220 in communication with the guide hole 210, the threaded sleeve 300 has a second liquid guiding channel 310 in communication with the first liquid guiding channel 220, and the guide rod 433 has a third liquid guiding channel 4331 in communication with the first liquid guiding channel 220; When the sealant is filled with the aluminum alloy cable, the insulating threaded tube 200, the ring frame 412 and the first rubber bellows 416, a closed space can be formed. The sealant flows into the first liquid guide channel 220, the second liquid guide channel 310 and the third liquid guide channel 4331 in sequence. When the sealant solidifies, the sealing rubber ring in the closed space forms a whole with the sealing rubber blocks of the first liquid guide channel 220, the second liquid guide channel 310 and the third liquid guide channel 4331. The sealing rubber ring can increase the insulation threaded tube through the sealing rubber block. The contact area of ​​200 increases the strength of the sealing rubber ring to lock the insulating threaded tube 200 and the aluminum alloy cable protective layer together, thereby ensuring the sealing effect of the sealing rubber ring. At the same time, the sealing rubber block can also restrain the threaded sleeve 300 and the guide rod 433 at the same time, and lock the threaded sleeve 300 and the guide rod 433 firmly in place, which not only reduces the probability of loosening of the threaded sleeve 300, but also enables the external sealing mechanism 430 to more stably seal the crimping tube 100, further improving the overall sealing effect of the connector.

[0036] like Figure 3 and Figure 7 As shown, the interior of the ring frame 412 is provided with a mounting groove 4123 connected to the second ring groove 4121, and the surface of the ring ring 414 is provided with a guide port 4141 connected to the mounting groove 4123. The inner sealing mechanism 410 also includes a locking assembly 417, which is fixedly connected to the interior of the guide port 4141, both ends of the locking assembly 417 penetrate to the outside of the guide port 4141, and one end of the locking assembly 417 is rotatably connected to the mounting groove 4123; the locking assembly 417 includes an extrusion plate 4171 and a guide rod 4172, the extrusion plate 4171 is rotatably connected to the interior of the mounting groove 4123, one end of the extrusion plate 4171 penetrates the guide port 4141 and extends to the inner side of the ring ring 414, the surface of the extrusion plate 4171 is provided with a sliding port 41711, the guide rod 4172 is slidably connected to the interior of the sliding port 41711, and both ends of the guide rod 4172 penetrate the sliding port 41711 and are fixedly connected to the guide port 4141.

[0037] In the process of the ring 414 driving the needle 415 to move, the ring 414 drives the guide rod 4172 to move through the guide opening 4141, and the guide rod 4172 drives the extrusion plate 4171 to rotate in the direction of the aluminum alloy cable through the sliding opening 41711. The extrusion plate 4171 extrudes the protective layer of the aluminum alloy cable during the rotation and gradually sinks into it, which can not only improve the connection strength between the insulating threaded tube 200 and the aluminum alloy cable, but also increase the resistance of the aluminum alloy cable to move outward when it is loose, so that the shape of the sealing rubber ring is more stable, thereby ensuring the sealing effect of the sealing rubber ring; like Figure 3 , Figure 5 and Figure 8 As shown, a first annular groove 320 is provided at one end of the threaded sleeve 300, and the inner second sealing mechanism 420 includes an extrusion cylinder 421, a first annular airbag 422, an air guide tube 423 and a second annular airbag 424. The extrusion cylinder 421 is slidably connected to the inside of the first annular groove 320, and one end of the extrusion cylinder 421 contacts the ring frame 412. The first annular airbag 422 is placed inside the first annular groove 320, and the first annular airbag 422 is arranged between the first annular groove 320 and the extrusion cylinder 421. The first annular airbag 422 is in a compressed state at this time, and the air guide tube 423 is fixedly connected and communicated with one end of the first annular airbag 422. One end of the air guide tube 423 is in contact with the ring frame 412. The first end of the annular airbag 422 passes through the first annular groove 320 and extends to the outside of the threaded sleeve 300. The second annular airbag 424 is fixedly connected to the inner side of the threaded sleeve 300. One end of the air guide tube 423 is fixedly connected and communicated with the second annular airbag 424. The second annular airbag 424 is in an expanded state at this time. The interiors of the first annular airbag 422 and the second annular airbag 424 are both filled with inert gas. When the aluminum alloy cable catches fire and burns through the second annular airbag 424, the inert gas quickly leaks from the rupture of the second annular airbag 424. At this time, the inert gas can rush to the fire site, which can reduce the fire rate on the surface of the aluminum alloy cable, thereby achieving the purpose of suppressing the fire.

[0038] When the threaded sleeve 300 penetrates into the insulating threaded tube 200, the extrusion cylinder 421 first contacts the ring frame 412. At this time, the extrusion cylinder 421 cannot move forward. In the subsequent spiral deepening process, the threaded sleeve 300 passes through the first annular groove 320 and cooperates with the extrusion cylinder 421 to extrude the first annular airbag 422. The inert gas inside the first annular airbag 422 is squeezed into the second annular airbag 424 along the air guide tube 423. At this time, the second annular airbag 424 expands inward and wraps around the surface of the aluminum alloy cable. At this time, the gap between the threaded sleeve 300 and the aluminum alloy cable is also blocked, further improving the sealing effect of the connector.

[0039] like Figure 3 , Figure 6 and Fig. 9As shown, a guide hole 210 is opened on the surface of the insulating threaded tube 200, and the external sealing mechanism 430 includes two second rubber bellows 431, which are respectively fixedly connected to the opposite ends of the two insulating threaded tubes 200, and the second rubber bellows 431 are sleeved on the surface of the crimping tube 100. A sealing ring 432 is fixedly connected inside the second rubber bellows 431, and the two sealing rings 432 are in contact with each other. One end of the sealing ring 432 is fixedly connected to a guide rod 433, and one end of the guide rod 433 passes through the guide hole 210. And in contact with the threaded sleeve 300; one end of one of the sealing rings 432 is provided with an annular positioning groove 4321, and the interior of the annular positioning groove 4321 is inserted with a reinforcing ring 434 fixedly connected to the other sealing ring 432. When the two sealing rings 432 are just docked, the reinforcing ring 434 is also completely inserted into the annular positioning groove 4321. At this time, the two sealing rings 432 are restrained by the reinforcing ring 434 and the annular positioning groove 4321, which can make the connection between the two sealing rings 432 tighter, so as to improve the sealing effect of the compression tube 100.

[0040] When the threaded sleeve 300 penetrates into the insulating threaded tube 200, the threaded sleeve 300 simultaneously pushes the guide rod 433, and the guide rod 433 stretches the second rubber bellows 431 through the sealing ring 432. When the two threaded sleeves 300 are installed in place, the two sealing rings 432 are in relative contact with each other. The two sealing rings 432, the two second rubber bellows 431 and the two insulating threaded tubes 200 cooperate to completely cover the crimping tube 100 therein, which can isolate the crimping tube 100 from the outside world, thereby achieving the effect of external sealing and insulation.

[0041] Working principle: When two adjacent aluminum alloy cables need to be connected together, firstly, the protective layers on the surfaces of the two aluminum alloy cables are stripped off by a specified length, and then the exposed aluminum alloy conductors are cleaned, and two threaded sleeves 300 are respectively sleeved on the surfaces of the protective layers of the two aluminum alloy cables, and then the two aluminum alloy conductors are respectively passed through the two insulating threaded tubes 200 and the crimping tube 100 until the two aluminum alloy conductors abut against each other, and then the crimping tube 100 is crimped together with the aluminum alloy conductor by a crimping tool, so that the two aluminum alloy cables are effectively connected; When the crimping work is completed, the two threaded sleeves 300 are screwed into the corresponding insulating threaded tubes 200. When the thread of the threaded sleeve 300 penetrates into the insulating threaded tube 200, the end of the threaded sleeve 300 contacts the ring ring 414 in advance and pushes the ring ring 414 to move. The ring ring 414 slides along the second annular groove 4121, and the ring ring 414 drives the first rubber bellows 416 to gradually shrink. At this time, the first rubber bellows 416 is concave inwards during the extrusion process and is in contact with the protective film of the aluminum alloy cable. The protective layer is tightly pressed, and the first rubber bellows 416 cooperates with the ring frame 412 to not only initially seal the gap between the aluminum alloy cable and the insulating threaded tube 200, but also the aluminum alloy cable, the insulating threaded tube 200, the ring frame 412 and the first rubber bellows 416 can cooperate to form a closed space. At the same time, the ring 414 drives the needle 415 to penetrate into the perforation 4122, and the needle 415 pierces the plastic storage bag 413 along the perforation 4122. When the end of the needle 415 penetrates the plastic storage bag 4 13, at this time, the sealant inside the rubber storage bag 413 pours into the closed space formed above along the liquid guide hole 4151, and the sealant quickly fills the closed space, and forms a sealing rubber ring around the insulating threaded tube 200 and the aluminum alloy cable, and firmly bonds the aluminum alloy cable, the insulating threaded tube 200, the ring frame 412 and the first rubber bellows 416 together, which can not only further seal the gap between the aluminum alloy cable and the insulating threaded tube 200, but also make the protective layer of the aluminum alloy cable and the insulating threaded tube 200 more tightly connected, thereby improving the overall connection strength of the connector. At the same time, compared with the existing sealing method of the heat shrink tube, the user only needs to rotate the two threaded sleeves 300 to perform the dual operations of sealing and locking, which can not only simplify the connection steps between the two aluminum alloy cables, but also make the user's installation operation easier and less difficult, and at the same time, there is no need to leave enough operating space to meet the installation requirements in a narrow space.

[0042] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. An aluminum alloy cable connector, characterized in that: include: A crimping tube (100), two insulating threaded tubes (200) and two threaded sleeves (300), wherein the two insulating threaded tubes (200) are respectively fixedly connected to two ends of the crimping tube (100), and the two threaded sleeves (300) are respectively threadedly connected to opposite ends of the two insulating threaded tubes (200); A sealing device (400), the sealing device (400) being sleeved on the surface of the crimping tube (100), with two ends of the sealing device (400) respectively penetrating the two insulating threaded tubes (200) and contacting the adjacent threaded sleeves (300); The sealing device (400) comprises two inner sealing mechanisms (410), two inner second sealing mechanisms (420) and an outer sealing mechanism (430); the inner sealing mechanism (410) is fixedly connected to the inside of the insulating threaded tube (200); one end of the inner sealing mechanism (410) is in contact with the threaded sleeve (300); the inner second sealing mechanism (420) is installed on the inner side of the threaded sleeve (300); one end of the inner second sealing mechanism (420) is in contact with the inner sealing mechanism (410); the outer sealing mechanism (430) is sleeved on the surface of the crimping tube (100); and both ends of the outer sealing mechanism (430) respectively penetrate the two insulating threaded tubes (200) and are in contact with the adjacent threaded sleeves (300).

2. The aluminum alloy cable connector according to claim 1, characterized in that: The inner sealing mechanism (410) comprises a sealing gasket (411), a ring frame (412), a rubber storage bag (413), a ring (414), a needle (415) and a first rubber bellows (416); the sealing gasket (411) is embedded and installed at the connection between the insulating threaded tube (200) and the crimping tube (100); the ring frame (412) is fixedly connected to the inside of the insulating threaded tube (200); one end of the threaded sleeve (300) is in contact with the ring frame (412); the rubber storage bag (413) is embedded and installed in the inside of the ring frame (412); the inside of the rubber storage bag (413) is filled with sealing glue; the inner side of the ring frame (412) is provided with a second ring groove (416). 121), one end of the ring frame (412) is provided with a through hole (4122) communicating with the second ring groove (4121), the ring (414) is slidably connected to the inside of the second ring groove (4121), the pricking needle (415) is fixedly connected to one end of the ring (414), one end of the pricking needle (415) sequentially passes through the through hole (4122) and the rubber storage bag (413) and extends to the outside of the ring frame (412), the first rubber bellows (416) is fixedly connected to the inside of the ring frame (412), one end of the first rubber bellows (416) is fixedly connected to the inside of the ring (414), and the first rubber bellows (416) is in a compressed state at this time.

3. The aluminum alloy cable connector according to claim 2, characterized in that: A guide hole (210) is provided on the surface of the insulating threaded tube (200). The external sealing mechanism (430) comprises two second rubber bellows (431). The two second rubber bellows (431) are respectively fixedly connected to the opposite ends of the two insulating threaded tubes (200). The second rubber bellows (431) is sleeved on the surface of the crimping tube (100). A sealing ring (432) is fixedly connected inside the second rubber bellows (431). The two sealing rings (432) are in contact with each other. One end of the sealing ring (432) is fixedly connected to a guide rod (433). One end of the guide rod (433) passes through the guide hole (210) and is in contact with the threaded sleeve (300).

4. The aluminum alloy cable connector according to claim 3, characterized in that: The insulating threaded tube (200) has a first liquid guide channel (220) in communication with the guide hole (210) formed inside, the threaded sleeve (300) has a second liquid guide channel (310) in communication with the first liquid guide channel (220) formed on the surface, and the guide rod (433) has a third liquid guide channel (4331) in communication with the first liquid guide channel (220) formed on the surface.

5. The aluminum alloy cable connector according to claim 1, characterized in that: A first annular groove (320) is formed at one end of the threaded sleeve (300). The inner second sealing mechanism (420) comprises an extrusion cylinder (421), a first annular airbag (422), an air guide tube (423) and a second annular airbag (424). The extrusion cylinder (421) is slidably connected to the inside of the first annular groove (320). One end of the extrusion cylinder (421) contacts the ring frame (412). The first annular airbag (422) is placed inside the first annular groove (320). The first annular airbag (422) is arranged between the first annular groove (320) and the extrusion cylinder (421). The first annular airbag (422) is in a compressed state at this time, the air guide tube (423) is fixedly connected to and communicated with one end of the first annular airbag (422), one end of the air guide tube (423) passes through the first annular groove (320) and extends to the outside of the threaded sleeve (300), the second annular airbag (424) is fixedly connected to the inner side of the threaded sleeve (300), one end of the air guide tube (423) is fixedly connected to and communicated with the second annular airbag (424), and the second annular airbag (424) is in an expanded state at this time.

6. The aluminum alloy cable connector according to claim 2, characterized in that: The ring frame (412) is provided with a mounting groove (4123) in communication with the second ring groove (4121) on its interior, the ring ring (414) is provided with a guide opening (4141) in communication with the mounting groove (4123) on its surface, the inner sealing mechanism (410) further comprises a locking assembly (417), the locking assembly (417) is fixedly connected to the interior of the guide opening (4141), both ends of the locking assembly (417) extend through the exterior of the guide opening (4141), and one end of the locking assembly (417) is rotatably connected to the mounting groove (4123); The locking assembly (417) comprises an extrusion plate (4171) and a guide rod (4172); the extrusion plate (4171) is rotatably connected to the inside of the mounting groove (4123); one end of the extrusion plate (4171) passes through the guide opening (4141) and extends to the inner side of the ring (414); a sliding opening (41711) is provided on the surface of the extrusion plate (4171); the guide rod (4172) is slidably connected to the inside of the sliding opening (41711); both ends of the guide rod (4172) pass through the sliding opening (41711) and are fixedly connected to the guide opening (4141).

7. The aluminum alloy cable connector according to claim 2, characterized in that: A liquid conducting hole (4151) is provided on the surface of the puncture needle (415), one opening of the liquid conducting hole (4151) is arranged inside the plastic storage bag (413), and the other opening of the liquid conducting hole (4151) is arranged outside the ring frame (412).

8. The aluminum alloy cable connector according to claim 2, characterized in that: The surface of the rubber storage bag (413) is covered with a rubber sleeve (418), and the rubber sleeve (418) is always compressed.

9. The aluminum alloy cable connector according to claim 5, characterized in that: The interiors of the first annular airbag (422) and the second annular airbag (424) are both filled with inert gas.

10. The aluminum alloy cable connector according to claim 3, characterized in that: An annular positioning groove (4321) is formed at one end of one of the sealing rings (432), and a reinforcing ring (434) fixedly connected to the other sealing ring (432) is inserted into the annular positioning groove (4321).

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