A tensile waterproof explosion-proof cable connector

Abstract

The invention discloses a tensile waterproof and explosion-proof cable connector, which relates to the technical field of cable connection and comprises a fixing sleeve, wherein the end surface of the fixing sleeve is slidably sleeved with one end of a clamping rod. The invention has the advantages that an inner conductor can be automatically fastened, so that the inner conductor does not need to be cut by clamps, does not need to be connected and compacted by a copper tube, does not need to be sealed by a heat shrink sleeve, and does not need to be fastened as a whole by a heat shrink tube, which not only simplifies the operation steps, reduces the labor, and shortens the cable connection time, but also reduces the requirements for operators and reduces labor costs. Moreover, while the cable connector is tensile resistant, the cable and the cable connector are completely sealed, so that the cable connector achieves the purpose of being waterproof and explosion-proof, so that the cable connected by the cable connector can be used in extreme environments, thereby expanding the application range of the cable connector, and the tensile resistance and waterproof and explosion-proof can work together, that is, the greater the pulling strength, the less likely there is a gap between the cable and the cable connector, thereby fully ensuring the waterproof and explosion-proof effect.

Description

Technical Field

[0001] The invention relates to the technical field of cable connection, in particular to a tensile-resistant waterproof and explosion-proof cable connector. Background Art

[0002] Cables are required for the transmission, distribution and voltage conversion of electricity, and they need to be connected to equipment. Due to production and transportation restrictions, the length of cables cannot be infinite, and the cut cables need to be reconnected. Therefore, cable connectors are indispensable components in the power system. In the process of cable connection, the cable ends need to be fixed, a section of the cable sheath is stripped off with a hand saw or an electrician's knife, and the sealant is evenly applied on the junction of the sheath surface and the outer conductor. The rear end cover, gasket, and sealing ring of the connector are put on the cable in sequence, and the connector sleeve is rotated and installed on the outer conductor without the sheath along the spiral direction of the outer conductor, close to the end of the cable sheath, and then the inner conductor of the appropriate length is cut with special metal scissors. The inner conductor assembly is screwed onto the inner conductor copper tube. For the inner conductor of the smooth copper tube, it should be tightened with wire pliers. After a series of processes, the cable is finally connected.

[0003] After searching, Chinese patent number CN219304062U discloses an anti-drop cable connector. Although it ensures the tensile stress resistance of the two cable connection parts and makes the connection easier, it can only connect cables with a single inner conductor. When cables with multiple inner conductors need to be connected, simple alignment and fitting can no longer achieve the connection purpose. At the same time, it cannot automatically tighten the inner conductor, so that the inner conductor still needs to be clamped off, the copper tube connected and compacted, the heat shrink sleeve sealed and the heat shrink tube tightened as a whole. Not only does it make the operation steps cumbersome, increase the workload, and extend the cable connection time, it also requires the professionalism of the operator, which increases the labor cost. At the same time, it cannot achieve the waterproof and explosion-proof effect, so that the cable connected by the cable connector cannot be used in extreme environments, narrowing the application scope of the cable connector. At the same time, the tensile resistance and waterproof and explosion-proof cannot work together. When the pulling strength is greater, the gap between the cable and the cable connector is more likely to be generated, thereby reducing the waterproof and explosion-proof effect. Summary of the invention

[0004] The object of the present invention is to provide a tensile-resistant waterproof and explosion-proof cable connector.

[0005] To solve the problems raised in the above-mentioned background art, the present invention provides the following technical solutions: A tensile waterproof and explosion-proof cable connector, including a fixed sleeve, one end of a clamping rod is slidably sleeved on the end face of the fixed sleeve, the other end of the clamping rod is fixedly connected with a rotating sleeve, the rotating sleeve rotatably sleeves a first connecting block and a second connecting block, one end of the first connecting block is fitted and connected with one end of the second connecting block, the other ends of the first connecting block and the second connecting block are both provided with insertion holes, an annular rotating groove is provided on the inner surface of the insertion hole, an internal thread is provided on the inner surface of the annular rotating groove, and an outer ring gear and an inner ring gear are rotatably sleeved in the annular rotating groove. A rotating cylinder is fixedly connected to the end faces of the outer ring gear and the inner ring gear, a guide groove is provided on the outer surface of the rotating cylinder, and a moving ring is slidably sleeved on the outer surface of the rotating cylinder. An external thread is provided on the outer surface of the moving ring, and one end of a top rod is fixedly connected to the end face of the moving ring. The other end of the top rod is fixedly connected with a pressing ring, and a first airbag is fixedly connected between the end face of the pressing ring and the end face of the annular rotating groove;

[0006] The inner surface of the rotating sleeve is fixedly sleeved with a toothed ring, and a sliding groove is provided on the end face of the rotating sleeve. A slider is slidably sleeved in the sliding groove, one end of a pull rod is fixedly connected to the side wall of the slider, the other end of the pull rod is fixedly connected with a first piston, a main airtight cavity is provided in the side wall of the fixed sleeve, a gas guide groove is provided on the end face of the main airtight cavity, the output end of the gas guide groove is communicated with a second airbag, and a one-way valve is installed on the inner surface of the main airtight cavity.

[0007] As a further solution of the present invention: The axial cross-sections of the fixed sleeve, the rotating sleeve, the first connecting block and the second connecting block are all arranged in a T shape, the rotating cylinder is rotatably sleeved with the annular rotating groove, the external thread is meshed with the internal thread, and the moving ring is fitted and connected with the guide groove.

[0008] As a further solution of the present invention: The outer ring gear is meshed with the inner ring gear, the toothed ring is meshed with the outer ring gear, and the spiral directions of the external threads corresponding to the inner ring gear and the external threads corresponding to the outer ring gear are opposite.

[0009] As a further solution of the present invention: The cross-sections of the sliding groove and the slider are both arranged in a middle shape, the pull rod is slidably sleeved with the fixed sleeve and extends into the main airtight cavity, the first piston is slidably sleeved with the main airtight cavity, and the second airbag is located between the fixed sleeve and the rotating sleeve.

[0010] As a further solution of the present invention: A fixed piston is provided between the pull rod and the fixed sleeve, there are multiple pull rods, and the multiple pull rods are evenly distributed about the central axis of the first piston. There are multiple clamping rods, and the multiple clamping rods are evenly distributed about the central axis of the rotating sleeve. The rotating sleeve is slidably sleeved with the fixed sleeve, and both the rotating sleeve and the fixed sleeve are provided with two, and the two rotating sleeves are fixed by bolts.

[0011] As a further solution of the present invention: a secondary airtight chamber is provided at the end of the fixed sleeve, one end of the first conduit is connected to the side wall of the main airtight chamber, the other end of the first conduit is connected to the secondary airtight chamber, an inclined groove is provided on the inner surface of the secondary airtight chamber, a second piston is slidably sleeved in the inclined groove, a blocking block is fixed on the end surface of the second piston, one end of the second conduit is connected to the end surface of the secondary airtight chamber, and the other end of the second conduit is connected to the third airbag.

[0012] As a further solution of the present invention: the secondary airtight chamber is arranged in an annular shape, the second piston and the clamping block are arranged at an angle, and there are multiple second pistons and multiple clamping blocks, and the multiple second pistons and multiple clamping blocks are evenly distributed about the central axis of the secondary airtight chamber, and the second conduits correspond to the inclined grooves one by one.

[0013] As a further solution of the present invention: the third airbag is fixedly sleeved with the inner surface of the fixed sleeve, and the third airbag is located between the clamping block and the rotating sleeve.

[0014] Adopting the above technical solution: Compared with the prior art, the beneficial effects of the present invention are:

[0015] The present invention drives the outer ring gear meshing with it to rotate by the gear ring on the rotating sleeve, and at the same time, the outer ring gear drives the inner ring gear meshing with it to rotate, so that multiple outer ring gears and multiple inner ring gears all rotate synchronously, so that the rotating drums on the outer ring gear and the inner ring gear rotate synchronously, so that the rotating drum drives the moving ring to rotate through the guide groove, and then the rotating moving ring translates under the cooperation of the outer thread and the inner thread, so that the moving ring pushes the push rod to translate, so that the pressure ring on the push rod squeezes one end of the first airbag, and the first airbag cannot translate under the limitation of the annular rotating groove, and then the first airbag is compressed and expanded, so that the inner ring of the first airbag can tightly wrap the outer surface of the inner conductor, so as to achieve the purpose of automatically tightening the inner conductor, so that the inner conductor does not need to be cut by pliers, does not need to be connected and compacted by copper tubes, does not need to be sealed by heat shrink sleeves, and does not need to be tightened as a whole by heat shrink tubes. Not only does it simplify the operation steps, reduce labor, and shorten the cable connection time, it can also reduce the requirements for operators and reduce labor costs.

[0016] The present invention fixes two rotating sleeves by bolts and seals the gap between the rotating sleeves at the same time. At this time, air is supplied to the main airtight chamber through the one-way valve, and the main airtight chamber is connected with the second airbag through the air guide groove, so that the second airbag is inflated and expanded, thereby making the second airbag fill the gap between the fixed sleeve and the rotating sleeve. While the above-mentioned second airbag is inflated, the high-pressure gas in the main airtight chamber will push the first piston to translate, so that the pull rod on the first piston pulls the rotating sleeve, so that the rotating sleeve and the fixed sleeve are tightly fitted, so as to achieve the purpose of anti-stretching of the cable connector. At the same time, the main airtight chamber is connected with the secondary airtight chamber through the first conduit, and the secondary airtight chamber is connected with the third airbag through the second conduit, so that the third airbag expands with the filling of the main airtight chamber, so that the third airbag fills the gap between the cable and the fixed sleeve. In summary, the cable and the cable connector are completely sealed, so that the cable connector achieves the purpose of waterproof and explosion-proof, and the cable connected with the cable connector can be used in extreme environments, thereby expanding the application range of the cable connector.

[0017] The present invention pushes the second piston to slide in the inclined groove through the high-pressure gas in the secondary airtight chamber, so that the block on the second piston extends out of the inclined groove and squeezes the outer sheath of the cable, and the block is recessed in the outer sheath, thereby achieving the purpose of fixing the cable and making the cable further resistant to stretching. When the cable is pulled, the cable will pull the fixing sleeve, so that there is a tendency for the fixing sleeve and the rotating sleeve to separate. At this time, the first piston on the rotating sleeve has a tendency to further compress the gas in the main airtight chamber, so that the second airbag and the third airbag connected to the main airtight chamber have a tendency to further expand, thereby continuously ensuring the sealing between the cable and the cable connector, so that the pull resistance and waterproof and explosion-proof can work together, that is, the greater the pulling strength, the less likely there is a gap between the cable and the cable connector, thereby fully ensuring the waterproof and explosion-proof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a tensile waterproof and explosion-proof cable connector of the present invention;

[0019] Figure 2 A half-section schematic diagram of a fixing sleeve in an embodiment of the present invention;

[0020] Figure 3 In the embodiment of the present invention Figure 2 A magnified view of the structure of part A;

[0021] Figure 4 A half-section schematic diagram of a second connecting block structure in an embodiment of the present invention;

[0022] Figure 5 In the embodiment of the present invention Figure 4 A magnified view of the structure of part B;

[0023] Figure 6 In the embodiment of the present invention Figure 2A magnified view of the structure of part C in the middle;

[0024] Figure 7 This is a schematic diagram of the distribution of inner ring gears in an embodiment of the present invention;

[0025] Figure 8 A cross-sectional view of the first airbag structure in an embodiment of the present invention;

[0026] Fig. 9 Schematic diagram of the annular rotating groove structure in an embodiment of the present invention.

[0027] In the figure: 1. fixed sleeve; 2. clamping rod; 3. rotating sleeve; 4. first connecting block; 5. second connecting block; 6. jack; 7. annular rotating groove; 8. internal thread; 9. outer ring gear; 10. inner ring gear; 11. rotating cylinder; 12. guide groove; 13. moving ring; 14. external thread; 15. push rod; 16. pressure ring; 17. first airbag; 18. gear ring; 19. slide groove; 20. slider; 21. pull rod; 22. first piston; 23. main airtight chamber; 24. air guide groove; 25. second airbag; 26. fixed piston; 27. one-way valve; 28. first conduit; 29. ​​secondary airtight chamber; 30. inclined groove; 31. second piston; 32. clamping block; 33. second conduit; 34. third airbag; 35. bolt. DETAILED DESCRIPTION

[0028] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. Embodiment 1

[0029] See also Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7-Figure 9The present invention provides a technical solution: a tensile waterproof explosion-proof cable connector, comprising a fixed sleeve 1, the end surface of the fixed sleeve 1 is slidably sleeved with one end of a clamping rod 2, the other end of the clamping rod 2 is fixedly connected with a rotating sleeve 3, a first connecting block 4 and a second connecting block 5 are rotatably sleeved in the rotating sleeve 3, one end of the first connecting block 4 is engaged with one end of the second connecting block 5, the other end of the first connecting block 4 and the other end of the second connecting block 5 are both provided with a plug hole 6, the inner surface of the plug hole 6 is provided with an annular rotating groove 7, the inner surface of the annular rotating groove 7 is provided with an inner The outer ring gear 9 and the inner ring gear 10 are rotatably sleeved in the annular groove 7, the end faces of the outer ring gear 9 and the inner ring gear 10 are fixedly connected with a rotating drum 11, the outer surface of the rotating drum 11 is provided with a guide groove 12, and the outer surface of the rotating drum 11 is slidably sleeved with a moving ring 13, the outer surface of the moving ring 13 is provided with an external thread 14, and one end of a push rod 15 is fixedly connected to the end face of the moving ring 13, the other end of the push rod 15 is fixedly connected to a pressing ring 16, and a first air bag 17 is fixedly connected between the end face of the pressing ring 16 and the end face of the annular groove 7.

[0030] See also Figure 2 and Figure 5 The axial cross-sections of the fixed sleeve 1, the rotating sleeve 3, the first connecting block 4 and the second connecting block 5 are all T-shaped, the rotating cylinder 11 is rotatably sleeved with the annular rotating groove 7, the external thread 14 is meshed with the internal thread 8, and the movable ring 13 is embedded with the guide groove 12.

[0031] See also Figure 7 The outer ring gear 9 is meshed with the inner ring gear 10 , the gear ring 18 is meshed with the outer ring gear 9 , and the spiral direction of the external thread 14 corresponding to the inner ring gear 10 is opposite to that of the external thread 14 corresponding to the outer ring gear 9 .

[0032] Specifically, during the process of fixing the inner conductor of the cable, the stripped end of the cable is inserted into the fixing sleeve 1, and multiple inner conductors are sequentially inserted into the jacks 6. After the exposed inner conductors completely enter the jacks 6, the rotating sleeves 3 on the first connecting block 4 and the second connecting block 5 are rotated, so that the toothed ring 18 on the rotating sleeve 3 drives the outer ring gear 9 meshed with it to rotate self - synchronously. At the same time, the outer ring gear 9 drives the inner ring gear 10 meshed with it to rotate self - synchronously, so that multiple outer ring gears 9 and multiple inner ring gears 10 all rotate synchronously. As a result, the rotating cylinders 11 on the outer ring gears 9 and the inner ring gears 10 rotate synchronously, and the rotating cylinder 11 drives the moving ring 13 to rotate through the guide groove 12. Furthermore, the rotating moving ring 13 translates under the cooperation of the external thread 14 and the internal thread 8, so that the moving ring 13 pushes the ejector rod 15 to translate. Thus, the pressing ring 16 on the ejector rod 15 squeezes one end of the first airbag 17, and the first airbag 17 cannot translate under the limitation of the annular rotating groove 7. Then, the first airbag 17 is compressed and expanded, so that the inner ring of the first airbag 17 can tightly wrap the outer surface of the inner conductor, achieving the purpose of automatically fastening the inner conductor. It makes the inner conductor not need to be clamped off, not need to be connected and compacted with a copper tube, not need to be sealed with a heat - shrinkable sleeve, and not need to be integrally fastened with a heat - shrinkable tube. It not only simplifies the operation steps, reduces the labor intensity, shortens the cable connection time, but also can reduce the requirements for operators and reduce the labor cost. Embodiment Two

[0033] Please refer to Figure 2-Figure 4 For this, the present invention provides a technical solution: a tensile - resistant waterproof and explosion - proof cable connector. The inner surface of the rotating sleeve 3 is fixedly sleeved with a toothed ring 18, and a sliding groove 19 is formed on the end surface of the rotating sleeve 3. A sliding block 20 is slidably sleeved in the sliding groove 19. One end of a pull rod 21 is fixedly connected to the side wall of the sliding block 20, and the other end of the pull rod 21 is fixedly connected to a first piston 22. A main airtight cavity 23 is formed in the side wall of the fixing sleeve 1. An air guide groove 24 is formed on the end surface of the main airtight cavity 23, and a second airbag 25 is communicated with the output end of the air guide groove 24. A one - way valve 27 is installed on the inner surface of the main airtight cavity 23.

[0034] Please refer to Figure 2 and Figure 3 For this, the cross - sections of the sliding groove 19 and the sliding block 20 are both in a Chinese character'middle' shape. The pull rod 21 is slidably sleeved with the fixing sleeve 1, and the pull rod 21 extends into the main airtight cavity 23. The first piston 22 is slidably sleeved with the main airtight cavity 23. The second airbag 25 is located between the fixing sleeve 1 and the rotating sleeve 3.

[0035] Please refer to Figure 2 and Figure 3A fixed piston 26 is provided between the pull rod 21 and the fixed sleeve 1, a plurality of pull rods 21 are provided, and the plurality of pull rods 21 are evenly distributed about the central axis of the first piston 22, a plurality of clamping rods 2 are provided, and the plurality of clamping rods 2 are evenly distributed about the central axis of the rotating sleeve 3, the rotating sleeve 3 is slidably connected with the fixed sleeve 1, and two rotating sleeves 3 and two fixed sleeves 1 are provided, and the two rotating sleeves 3 are fixed by bolts 35.

[0036] Specifically, in the process of sealing the cable and the cable connector, the connecting end of the first connecting block 4 is inserted into the connecting end of the second connecting block 5, so that the two sections of the cable are connected. At this time, the bolt 35 on the rotating sleeve 3 is rotated to rotate and translate between the two rotating sleeves 3, so that the two ends of the bolt 35 are meshed and sleeved with the two rotating sleeves 3, so that the rotating sleeves 3 are fixed while the gap between the rotating sleeves 3 is sealed. At this time, air is supplied to the main airtight chamber 23 through the one-way valve 27, and the main airtight chamber 23 is connected with the second airbag 25 through the air guide groove 24, so that the second airbag 25 is inflated and expanded, so that the second airbag 25 fills the gap between the fixed sleeve 1 and the rotating sleeve 3, and while the above-mentioned second airbag 25 is inflated, the air in the main airtight chamber 23 is filled with air. The high-pressure gas will push the first piston 22 to translate, so that the pull rod 21 on the first piston 22 pulls the rotating sleeve 3, so that the rotating sleeve 3 and the fixed sleeve 1 are tightly fitted, so as to achieve the purpose of anti-stretching of the cable connector. At the same time, the main airtight chamber 23 is connected with the auxiliary airtight chamber 29 through the first conduit 28, and the auxiliary airtight chamber 29 is connected with the third airbag 34 through the second conduit 33, so that the third airbag 34 expands with the filling of the main airtight chamber 23, so that the third airbag 34 fills the gap between the cable and the fixed sleeve 1. In summary, the cable and the cable connector are completely sealed, so that the cable connector achieves the purpose of waterproof and explosion-proof, and the cable connected with the cable connector can be used in extreme environments, which expands the application range of the cable connector. Embodiment 3

[0037] See also Figure 2 and Figure 6 The present invention provides a technical solution: a tensile waterproof explosion-proof cable connector, a secondary airtight chamber 29 is provided at the end of the fixed sleeve 1, one end of a first conduit 28 is connected to the side wall of the main airtight chamber 23, the other end of the first conduit 28 is connected to the secondary airtight chamber 29, an inclined groove 30 is provided on the inner surface of the secondary airtight chamber 29, a second piston 31 is slidably sleeved in the inclined groove 30, a block 32 is fixedly connected to the end surface of the second piston 31, one end of a second conduit 33 is connected to the end surface of the secondary airtight chamber 29, and the other end of the second conduit 33 is connected to a third airbag 34.

[0038] See also Figure 2 and Figure 6The secondary airtight chamber 29 is arranged in a ring shape, the second piston 31 and the block 32 are arranged at an angle, and there are multiple second pistons 31 and multiple blocks 32, and the multiple second pistons 31 and multiple blocks 32 are evenly distributed about the central axis of the secondary airtight chamber 29, and the second conduits 33 correspond to the inclined grooves 30 one by one.

[0039] See also Figure 6 The third airbag 34 is fixedly connected to the inner surface of the fixed sleeve 1 , and the third airbag 34 is located between the clamping block 32 and the rotating sleeve 3 .

[0040] Specifically, in the process of pulling the cable, the secondary airtight chamber 29 connected to the main airtight chamber 23 pushes the second piston 31 to slide in the inclined groove 30 through high-pressure gas, so that the block 32 on the second piston 31 extends out of the inclined groove 30 and squeezes the outer sheath of the cable, and makes the block 32 recessed in the outer sheath, thereby achieving the purpose of fixing the cable and making the cable further resistant to stretching. When the cable is pulled, the cable will pull the fixing sleeve 1, so that there is a separation tendency between the fixing sleeve 1 and the rotating sleeve 3. At this time, the first piston 22 on the rotating sleeve 3 has a tendency to further compress the gas in the main airtight chamber 23, so that the second airbag 25 and the third airbag 34 connected to the main airtight chamber 23 have a tendency to further expand, thereby continuously ensuring the sealing between the cable and the cable connector, so that the anti-pull and waterproof and explosion-proof can work together, that is, the greater the pulling strength, the less likely there is a gap between the cable and the cable connector, thereby fully ensuring the waterproof and explosion-proof effect.

[0041] The working principle and use process of the present invention are as follows: when it is necessary to connect the cable, the outer sheath, fireproof mud layer and aluminum sheath of the cable are stripped according to the specified requirements, and then the resistance value of each inner conductor of the cable is measured with a resistance tester. When everything is normal, the stripped end of the cable is inserted into the fixed sleeve 1, and multiple inner conductors are inserted into the jack 6 in sequence. After the exposed inner conductors are completely inserted into the jack 6, the rotating sleeve 3 on the first connecting block 4 and the second connecting block 5 is rotated, so that the gear ring 18 on the rotating sleeve 3 drives the outer ring gear 9 meshing with it to rotate, and at the same time, the outer ring gear 9 drives the inner ring gear 10 meshing with it to rotate, so that the multiple outer ring gears 9 and the multiple inner ring gears 10 rotate synchronously, so that the outer ring gear 9 and the rotating drum 11 on the inner ring gear 10 rotate synchronously. The guide groove 12 drives the movable ring 13 to rotate, and then the rotating movable ring 13 translates under the cooperation of the external thread 14 and the internal thread 8, so that the movable ring 13 pushes the push rod 15 to translate, so that the pressure ring 16 on the push rod 15 squeezes one end of the first airbag 17, and the first airbag 17 cannot translate under the limit of the annular rotating groove 7, so that the first airbag 17 is compressed and expanded, so that the inner ring of the first airbag 17 can tightly wrap the outer surface of the inner conductor, so as to achieve the purpose of automatically tightening the inner conductor, so that the inner conductor does not need to be cut by clamps, connected and compacted by copper tubes, sealed by heat shrink sleeves, and integrally tightened by heat shrink tubes, which not only simplifies the operation steps, reduces the labor, shortens the cable connection time, but also reduces the requirements for operators and reduces labor costs;

[0042] After the above inner conductor is fixed, the connecting end of the first connecting block 4 is inserted into the connecting end of the second connecting block 5 to connect the two cable sections. At this time, the bolt 35 on the rotating sleeve 3 is rotated to rotate and translate between the two rotating sleeves 3, so that the two ends of the bolt 35 are meshed and sleeved with the two rotating sleeves 3, so that the rotating sleeves 3 are fixed while the gap between the rotating sleeves 3 is sealed. At this time, air is supplied to the main airtight chamber 23 through the one-way valve 27, and the main airtight chamber 23 is connected with the second airbag 25 through the air guide groove 24, so that the second airbag 25 is inflated and expanded, so that the second airbag 25 fills the gap between the fixed sleeve 1 and the rotating sleeve 3, and when the above second airbag 25 expands, the high-pressure gas in the main airtight chamber 23 will The first piston 22 is pushed to translate, so that the pull rod 21 on the first piston 22 pulls the rotating sleeve 3, so that the rotating sleeve 3 and the fixed sleeve 1 are tightly sleeved, so as to achieve the purpose of anti-stretching of the cable connector. At the same time, the main airtight chamber 23 is connected with the auxiliary airtight chamber 29 through the first conduit 28, and the auxiliary airtight chamber 29 is connected with the third airbag 34 through the second conduit 33, so that the third airbag 34 expands with the filling of the main airtight chamber 23, so that the third airbag 34 fills the gap between the cable and the fixed sleeve 1. In summary, the cable and the cable connector are completely sealed, so that the cable connector achieves the purpose of waterproof and explosion-proof, and the cable connected with the cable connector can be used in extreme environments, which expands the application range of the cable connector;

[0043] When the air pressure in the above-mentioned main airtight chamber 23 reaches a preset value, the filling of air into the main airtight chamber 23 is stopped. At this time, the secondary airtight chamber 29 connected to the main airtight chamber 23 pushes the second piston 31 to slide in the inclined groove 30 through the high-pressure gas, so that the block 32 on the second piston 31 extends out of the inclined groove 30 and squeezes the outer sheath of the cable, and the block 32 is recessed in the outer sheath, so as to achieve the purpose of fixing the cable and make the cable further resistant to stretching. When the cable is pulled, the cable will pull the fixing sleeve 1, so that there is a separation tendency between the fixing sleeve 1 and the rotating sleeve 3. At this time, the first piston 22 on the rotating sleeve 3 has a tendency to further compress the gas in the main airtight chamber 23, so that the second airbag 25 and the third airbag 34 connected to the main airtight chamber 23 have a tendency to further expand, thereby continuously ensuring the sealing between the cable and the cable connector, so that the pull resistance and waterproof and explosion-proof can work together, that is, the greater the pulling strength, the less likely there is a gap between the cable and the cable connector, thereby fully ensuring the waterproof and explosion-proof effect and completing the operation.

[0044] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A tensile waterproof explosion-proof cable connector, characterized in that: The invention comprises a fixed sleeve (1), wherein the end surface of the fixed sleeve (1) is slidably sleeved with one end of a clamping rod (2), the other end of the clamping rod (2) is fixedly connected with a rotating sleeve (3), a first connecting block (4) and a second connecting block (5) are rotatably sleeved in the rotating sleeve (3), one end of the first connecting block (4) is engaged with one end of the second connecting block (5), the other end of the first connecting block (4) and the other end of the second connecting block (5) are both provided with a plug hole (6), the inner surface of the plug hole (6) is provided with an annular rotating groove (7), the inner surface of the annular rotating groove (7) is provided with an internal thread (8), and the inner surface of the annular rotating groove (7) is provided with a rotating thread (9). The movable sleeve is connected with an outer ring gear (9) and an inner ring gear (10), and the end faces of the outer ring gear (9) and the inner ring gear (10) are fixedly connected with a rotating drum (11), the outer surface of the rotating drum (11) is provided with a guide groove (12), and the outer surface of the rotating drum (11) is slidably sleeved with a moving ring (13), the outer surface of the moving ring (13) is provided with an external thread (14), and one end of a push rod (15) is fixedly connected to the end face of the moving ring (13), and the other end of the push rod (15) is fixedly connected with a pressure ring (16), and a first air bag (17) is fixedly connected between the end face of the pressure ring (16) and the end face of the annular rotating groove (7); A gear ring (18) is fixedly sleeved on the inner surface of the rotating sleeve (3), and a slide groove (19) is provided on the end surface of the rotating sleeve (3), a slider (20) is slidably sleeved in the slide groove (19), one end of a pull rod (21) is fixedly connected to the side wall of the slider (20), and the other end of the pull rod (21) is fixedly connected to a first piston (22), a main airtight chamber (23) is provided in the side wall of the fixed sleeve (1), an air guide groove (24) is provided on the end surface of the main airtight chamber (23), the output end of the air guide groove (24) is connected to a second air bag (25), and a one-way valve (27) is installed on the inner surface of the main airtight chamber (23); The end of the fixed sleeve (1) is provided with a secondary airtight chamber (29); one end of a first conduit (28) is connected to the side wall of the main airtight chamber (23); the other end of the first conduit (28) is connected to the secondary airtight chamber (29); an inclined groove (30) is provided on the inner surface of the secondary airtight chamber (29); a second piston (31) is slidably sleeved in the inclined groove (30); a clamping block (32) is fixedly connected to the end surface of the second piston (31); one end of a second conduit (33) is connected to the end surface of the secondary airtight chamber (29); the other end of the second conduit (33) is connected to a third air bag (34); The secondary airtight chamber (29) is arranged in an annular shape, the second piston (31) and the clamping block (32) are arranged obliquely, and a plurality of the second pistons (31) and the clamping block (32) are provided, and the plurality of second pistons (31) and the plurality of clamping blocks (32) are evenly distributed about the central axis of the secondary airtight chamber (29), and the second conduits (33) correspond one to one to the inclined grooves (30).

2. The tensile waterproof explosion-proof cable connector according to claim 1, characterized in that: The axial cross-sections of the fixed sleeve (1), the rotating sleeve (3), the first connecting block (4), and the second connecting block (5) are all arranged in a T shape. The rotating cylinder (11) is rotatably sleeved with the annular rotating groove (7). The external thread (14) is meshed and connected with the internal thread (8). The moving ring (13) is fitted and connected with the guide groove (12).

3. The tensile waterproof explosion-proof cable connector according to claim 1, characterized in that: The outer ring gear (9) is meshed and connected with the inner ring gear (10). The toothed ring (18) is meshed and connected with the outer ring gear (9). The helix directions of the external thread (14) corresponding to the inner ring gear (10) and the external thread (14) corresponding to the outer ring gear (9) are opposite.

4. The tensile waterproof explosion-proof cable connector according to claim 1, characterized in that: The cross-sections of the sliding groove (19) and the sliding block (20) are both arranged in a middle character shape. The pull rod (21) is slidably sleeved with the fixed sleeve (1), and the pull rod (21) extends into the main airtight cavity (23). The first piston (22) is slidably sleeved with the main airtight cavity (23). The second airbag (25) is located between the fixed sleeve (1) and the rotating sleeve (3).

5. The tensile waterproof explosion-proof cable connector according to claim 1, characterized in that: A fixed piston (26) is arranged between the pull rod (21) and the fixed sleeve (1). There are multiple pull rods (21), and the multiple pull rods (21) are evenly distributed about the central axis of the first piston (22). There are multiple clamping rods (2), and the multiple clamping rods (2) are evenly distributed about the central axis of the rotating sleeve (3). The rotating sleeve (3) is slidably sleeved with the fixed sleeve (1), and both the rotating sleeve (3) and the fixed sleeve (1) are provided with two, and the two rotating sleeves (3) are fixed by bolts (35).

6. The tensile waterproof and explosion-proof cable connector according to claim 1, characterized in that: The third airbag (34) is fixedly sleeved with the inner surface of the fixed sleeve (1). The third airbag (34) is located between the clamping block (32) and the rotating sleeve (3).

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