A cable connection device for electric power construction

Abstract

The present invention relates to the technical field of cable connection, and discloses a cable connection device for power construction, comprising a connecting female head and a connecting male head, a first shell being fixed on the outer side of the connecting female head, a first cable being connected to one end of the connecting female head, a hollow contact head being slidably connected to one side of the connecting female head, a first spring being connected between the hollow contact head and the connecting female head, a positioning column being slidably connected inside the hollow contact head, and a second spring being connected between the positioning column and the hollow contact head; the purpose of compressing the air inside the circular hole can be achieved, and the air is prompted to enter the inflatable sealing ring for expansion, and the purpose of automatically sealing the gap at the connection between the connecting male head and the connecting female head can be achieved, and water can be prevented from entering the connecting male head and the connecting female head to cause leakage, thereby further improving the sealing effect and the safety performance of use.

Description

Technical Field

[0001] The invention relates to the technical field of cable connection, in particular to a cable connection device for electric power construction. Background Art

[0002] The main purpose of cable connection during power construction is to ensure the continuity of the cable line and the stability of electrical performance. Cable connection is to make each section of cable form a continuous line to ensure that the current can pass smoothly and avoid power supply problems caused by line interruption. The cable connection needs to be sealed to prevent external factors such as moisture and water from invading and affecting the insulation performance and service life of the cable. Secondly, the insulation level needs to be consistent with the cable body to ensure that it can withstand the corresponding voltage and current during operation and ensure safe and reliable operation.

[0003] In the prior art, when connecting cables, the male and female heads of the connector are matched to connect the two cables respectively, and then they are wrapped with sealing tape to reduce the entry of moisture and improve the insulation effect. However, some power cables are laid underground. The underground environment is relatively humid during rainy and snowy weather. The long-term burial of cables underground will cause the sealing tape to become less sticky and easy to fall off, affecting the use effect. There is a gap when the male and female heads are connected. When the sealing tape is damaged, it is easy for moisture to enter the male and female heads, which is prone to leakage, affecting the safety of the cable connection. Summary of the invention

[0004] The present invention provides a cable connection device for electric power construction, which can realize the purpose of automatically sealing the gap at the connection between the male connector and the female connector, thereby preventing water from entering the inside of the male connector and the female connector to cause leakage, and further improving the sealing effect and the safety performance of use. It solves the problem mentioned in the above background technology that the cable buried underground for a long time will cause the viscosity of the sealing tape to deteriorate, and it is easy to fall off, affecting the use effect. There is a gap when the male head and the female head are connected. When the sealing tape is damaged, it is easy to cause moisture to enter the male head and the female head, which is easy to cause leakage, affecting the safety of the cable connection.

[0005] The present invention provides the following technical solution: a cable connection device for power construction, comprising a connecting female head and a connecting male head, a first shell being fixed to the outer side of the connecting female head, a first cable being connected to one end of the connecting female head, a hollow contact head being slidably connected to one side of the connecting female head, a first spring being connected between the hollow contact head and the connecting female head, a positioning column being slidably connected inside the hollow contact head, and a second spring being connected between the positioning column and the hollow contact head;

[0006] A second shell is fixed to the outer side of the male connector, a second cable is connected to one end of the male connector, and a first plug is fixed to one side of the male connector. A circular hole is provided in the male connector, and a positioning hole is provided on one side of the male connector. An inflatable sealing ring is provided at one end of the male connector, and a piston assembly for supplying air to the inflatable sealing ring is provided in the circular hole.

[0007] As an optional solution of the cable connection device for power construction described in the present invention, a mounting block is fixed on the first shell, a fixing strip for adapting to the mounting block is fixed on the second shell, and a circular sealing ring is provided at the end of the male connector.

[0008] As an optional solution of the cable connection device for power construction described in the present invention, the piston assembly includes a piston plate, the piston plate is slidably connected in the circular hole, a piston rod is fixed to one end of the piston plate, and the piston plate is elastically connected to the connecting male head through a third spring.

[0009] As an optional scheme of the cable connection device for power construction described in the present invention, wherein: a sealing box is fixed on the first shell, a push plate is slidably connected to the sealing box, a fourth spring is connected between the push plate and the sealing box, a first hollow tube is fixed on the push plate, a sealing assembly is arranged in the first hollow tube, an L-shaped flow pipe matching the sealing box is fixed in the second shell, a valve is arranged on the L-shaped flow pipe, a valve stem is arranged at the lower end of the valve, and a first resistance wedge is fixed to the lower end of the valve stem.

[0010] As an optional solution of the cable connection device for power construction described in the present invention, the sealing assembly includes a second hollow tube, the second hollow tube is slidably connected in the first hollow tube, a limiting plate is fixed at one end of the second hollow tube, the limiting plate is elastically connected to the push plate through a fifth spring, and a plurality of flow grooves are opened on the second hollow tube.

[0011] As an optional solution of the cable connection device for power construction described in the present invention, wherein: a mounting block is fixed on the second shell, a third hollow tube is fixed on the mounting block, an annular block is slidably connected to the third hollow tube, the annular block is elastically connected to the mounting block through a sixth spring, and the third hollow tube is connected to the second shell.

[0012] As an optional scheme of the cable connection device for power construction described in the present invention, wherein: a guide rod is slidably connected to one side of the connecting female head, a seventh spring is connected between the guide rod and the connecting female head, a sealing film is arranged on the glue outlet of the sealing glue box, a push rod is slidably connected to the L-shaped circulation tube, an eighth spring is connected between the push rod and the L-shaped circulation tube, the upper end of the push rod is against the sealing film, and the lower end of the push rod is fixed with a first contact head.

[0013] As an optional scheme of the cable connection device for power construction described in the present invention, two first sliding rods are fixed to the end of the first shell, first blocking pieces are arranged on both sides of the first cable, the first blocking piece is elastically connected to the first sliding rod through a ninth spring, a second interference wedge is fixed to the first blocking piece, one side of the second interference wedge is in contact with a first interference frame, the first interference frame is elastically connected to the first shell through a tenth spring, the first interference wedge is in contact with the first interference frame, one side of the first interference frame is in contact with a second interference head, and the second interference head is elastically connected to the first shell through an eleventh spring.

[0014] As an optional solution of the cable connection device for power construction described in the present invention, two second sliding rods are fixed to the end of the second shell, second blocking pieces are provided on both sides of the second cable, the second blocking piece is elastically connected to the second sliding rod through a twelfth spring, a third interference wedge is fixed on the second blocking piece, one side of the third interference wedge is in contact with a second interference frame, and the second interference frame is elastically connected to the second shell through a thirteenth spring.

[0015] As an optional solution of the cable connection device for power construction described in the present invention, a through hole is provided on the male connector, a second plug post is fixed on the female connector, and the through hole is adapted to the second plug post.

[0016] The present invention has the following beneficial effects:

[0017] 1. In the cable connection device for power construction, the first cable passes through the first shell to be connected to the female connector, and the second cable passes through the second shell to be connected to the male connector. When the male connector is aligned with the female connector for insertion, the purpose of electrical connection between the first cable and the second cable can be achieved. When the male connector is connected to the female connector, the purpose of the hollow abutting head and the first plugging column being abutted can be achieved, so that the hollow abutting head drives the internal elastically connected positioning column to abut against the male connector. When the male connector and the female connector are inserted, the purpose of automatically inserting the positioning column into the positioning hole can be achieved, so that the male connector and the female connector can be prevented from being separated, and the stability of the connection can be improved. The first shell and the second plugging column are secured by the provided circular sealing ring. The connection gap between the two shells is blocked to improve the sealing effect. The piston assembly that is set can contact the female connection head when the male connection head is connected to the female connection head, so as to achieve the purpose of compressing the air inside the circular hole, and prompt the air to enter the inflatable sealing ring for expansion, so as to achieve the purpose of automatically sealing the gap at the connection between the male connection head and the female connection head, and prevent water from entering the male connection head and the female connection head to cause leakage, thereby further improving the sealing effect and safety performance in use. When the fixed clip on the second shell is inserted into the installation clip on the first shell, the first shell and the second shell can be quickly connected by snapping, and the first shell and the second shell can be prevented from being separated during use.

[0018] 2. In the cable connection device for power construction, the sealing glue box on the first shell is used to store liquid sealant conveniently, and the push plate can slide in the sealing glue box through the arrangement, so as to squeeze the sealant conveniently. When the connecting male head is connected with the connecting female head, the mounting block on the second shell drives the third hollow tube and the annular block to move synchronously, so as to achieve the purpose of the annular block pushing the first hollow tube and the pushing plate to move, so as to facilitate the pushing plate to squeeze the sealant in the sealing glue box into the L-shaped circulation pipe. When the valve is in the open state, the sealant can flow into one end of the first shell, so as to facilitate the sealing of the first cable and the first shell. At the same time, the sealant can flow into one end of the connecting female head through the channel between the connecting female head and the first shell, so as to achieve the purpose of sealing the connecting female head. The purpose of sealing the gap between the first head and the connecting male head is to seal the gap between the head and the connecting male head. When the sealant solidifies, the sealing effect can be further improved to prevent water from entering the first shell and causing leakage of the first cable. When the sealant inside the first shell is filled with sealant, the third hollow tube can slide in the first hollow tube and interfere with the sealing component, prompting the sealing component to release the sealing of the first hollow tube, and the remaining sealant in the sealant box can finally flow into the second shell through the first hollow tube and the third hollow tube, which is convenient for sealing the second cable and the second shell, preventing water from entering the second shell and causing leakage of the second cable. Sealing by filling with glue can further improve the service life of the first cable and the second cable after connection and the safety performance of use.

[0019] 3. In the cable connection device for power construction, the glue outlet of the sealing glue box can be temporarily blocked by a sealing film to prevent the sealant from flowing into the first shell when the device is not in use and affecting the connection of the first cable. When the connecting male head and the connecting female head are plugged into each other, the first plugging column can be in contact with the guide rod elastically connected to the connecting female head, so that the guide rod can be in contact with the first contact head fixed at the lower end of the push rod during horizontal movement, so that the push rod can slide on the L-shaped circulation tube to break the sealing film, so that the sealant can flow conveniently. The first sealing sheets arranged on both sides of the first cable can be used to block the gap between the end of the first cable and the first shell when in use. The first contact frame can be automatically connected to the second contact frame through the linkage between the guide rod, the second contact head and the first contact frame. The second contact wedge on the sealing piece contacts with the first contact wedge, prompting the first sealing piece to automatically seal the gap between the first cable and the end of the first shell, which can reduce the overflow of sealant and reduce waste. At the same time, the first contact frame can release the restriction on the first contact wedge, prompting the valve stem at the lower end of the valve to move, which can achieve the purpose of automatically closing the valve and stopping the injection of glue, and facilitate the sealant to flow into the second shell. Through the second plug fixed on the connecting female head, when the connecting male head and the connecting female head are inserted, it can contact the second contact frame arranged in the second shell, prompting the second contact frame to move horizontally and contact the third contact wedge on the second sealing piece, so that the second sealing piece automatically moves to seal the gap between the second cable and the end of the second shell, which can reduce the overflow of sealant and reduce waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the structure of the connecting female head of the present invention.

[0022] Figure 3 It is a schematic diagram of the structure of the connecting male head of the present invention.

[0023] Figure 4 It is a schematic diagram of the structure of the sealing glue box of the present invention.

[0024] Figure 5 It is a cross-sectional view of the L-shaped flow tube structure of the present invention.

[0025] Figure 6 It is a cross-sectional view of the connecting male head structure of the present invention.

[0026] Figure 7 It is a cross-sectional view of the hollow abutment head structure of the present invention.

[0027] Figure 8 for Figure 2 A partial enlarged view of point A in the middle.

[0028] In the figure: 1, female connector; 101, guide rod; 102, seventh spring; 2, male connector; 3, first shell; 4, first cable; 5, hollow contact head; 6, first spring; 7, positioning column; 8, second spring; 9, second shell; 10, second cable; 11, round hole; 111, piston plate; 112, piston rod; 113, third spring; 12, inflatable seal ring; 13, mounting block; 14, fixing card strip; 15, circular seal ring; 16, first plug column; 17, sealing rubber box; 18, push plate; 19, fourth spring; 20, first hollow tube; 201, second hollow tube; 202, limit plate; 203, fifth spring; 204, flow slot; 21, L shaped flow pipe; 22, valve; 23, valve stem; 24, first abutment wedge; 25, mounting block; 26, third hollow tube; 27, annular block; 28, sixth spring; 29, sealing membrane; 30, push rod; 301, eighth spring; 31, first abutment head; 32, first slide bar; 33, first blocking piece; 34, ninth spring; 35, second abutment wedge; 36, first abutment frame; 361, tenth spring; 37, second abutment head; 38, eleventh spring; 39, second slide bar; 40, second blocking piece; 41, twelfth spring; 42, third abutment wedge; 43, second abutment frame; 44, thirteenth spring; 45, through hole; 46, second plug column; 47, positioning hole. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0030] For example, see Figures 1 to 8 A cable connection device for power construction includes a female connector 1 and a male connector 2, a first shell 3 is fixed to the outer side of the female connector 1, a first cable 4 is connected to one end of the female connector 1, a hollow contact head 5 is slidably connected to one side of the female connector 1, a first spring 6 is connected between the hollow contact head 5 and the female connector 1, a positioning column 7 is slidably connected inside the hollow contact head 5, and a second spring 8 is connected between the positioning column 7 and the hollow contact head 5;

[0031] A second shell 9 is fixed to the outer side of the connecting male connector 2, a second cable 10 is connected to one end of the connecting male connector 2, and a first plug 16 is fixed to one side of the connecting male connector 2. A circular hole 11 is provided in the connecting male connector 2, and a positioning hole 47 is provided on one side of the connecting male connector 2. An inflatable sealing ring 12 is provided at one end of the connecting male connector 2, and a piston assembly for supplying air to the inflatable sealing ring 12 is provided in the circular hole 11.

[0032] A mounting block 13 is fixed on the first housing 3 , a fixing strip 14 for fitting the mounting block 13 is fixed on the second housing 9 , and a circular sealing ring 15 is provided at the end of the connecting male connector 2 .

[0033] The piston assembly includes a piston plate 111 , which is slidably connected in the circular hole 11 , a piston rod 112 is fixed to one end of the piston plate 111 , and the piston plate 111 is elastically connected to the connecting male head 2 via a third spring 113 .

[0034] When in use, the first cable 4 is passed through the first housing 3 and fixedly connected to the female connector 1, and the second cable 10 is passed through the second housing 9 and fixedly connected to the male connector 2. Figure 1-Figure 6 When the male connector 2 is aligned with the female connector 1 for insertion, the first shell 3 and the second shell 9 approach each other, and at the same time, the first plug post 16 contacts the hollow contact head 5, the first spring 6 accumulates force, and the hollow contact head 5 drives the positioning post 7 to contact the end of the male connector 2, and the second spring 8 accumulates force. When the male connector 2 and the female connector 1 are inserted and inserted, the positioning post 7 encounters the positioning hole 47 and releases the elastic force through the second spring 8, prompting the positioning post 7 to be quickly inserted into the positioning hole 47, so as to achieve the purpose of automatic positioning of the male connector 2 and the female connector 1, and avoid the separation of the male connector 2 and the female connector 1. At the same time, the piston assembly moves synchronously with the male connector 2, so that the piston rod 112 can contact the female connector 1, prompting the piston rod 112 to drive the piston plate 111 to move horizontally in the round hole 11, and the third spring 113 accumulates force , which can achieve the purpose of compressing the air inside the circular hole 11, prompting the air to flow into the inflatable sealing ring 12 for expansion, and can achieve the purpose of automatically sealing the gap at the connection between the male connector 2 and the female connector 1, and can prevent water from entering the male connector 2 and the female connector 1 to cause leakage. The connection gap between the first shell 3 and the second shell 9 is blocked by the circular sealing ring 15 fixed on the male connector 2, thereby improving the sealing effect and preventing water from flowing into the interior along the gap between the first shell 3 and the second shell 9. When the male connector 2 and the female connector 1 are inserted into the installation block 13 on the first shell 3, the fixed card strip 14 on the second shell 9 is inserted into the installation card block 13 on the first shell 3, which can achieve the purpose of quickly engaging and connecting the first shell 3 and the second shell 9, and avoid the first shell 3 and the second shell 9 being separated during use.

[0035] Embodiment 2: This embodiment is an improvement made on the basis of Embodiment 1. For details, please refer to Figures 1 to 8 A sealing rubber box 17 is fixed on the first shell 3, a push plate 18 is slidably connected to the sealing rubber box 17, a fourth spring 19 is connected between the push plate 18 and the sealing rubber box 17, a first hollow tube 20 is fixed on the push plate 18, a blocking component is arranged in the first hollow tube 20, an L-shaped flow pipe 21 matching the sealing rubber box 17 is fixed in the second shell 9, a valve 22 is arranged on the L-shaped flow pipe 21, a valve stem 23 is arranged at the lower end of the valve 22, and a first abutting wedge 24 is fixed to the lower end of the valve stem 23.

[0036] The blocking assembly includes a second hollow tube 201 slidably connected in the first hollow tube 20 , a limiting plate 202 is fixed at one end of the second hollow tube 201 , the limiting plate 202 is elastically connected to the push plate 18 through a fifth spring 203 , and a plurality of flow slots 204 are opened on the second hollow tube 201 .

[0037] A mounting block 25 is fixed on the second shell 9 , a third hollow tube 26 is fixed on the mounting block 25 , an annular block 27 is slidably connected to the third hollow tube 26 , the annular block 27 is elastically connected to the mounting block 25 via a sixth spring 28 , and the third hollow tube 26 is connected to the second shell 9 .

[0038] In order to further improve the waterproof effect of the device when used underground, refer to Figure 1-Figure 6 When the male connector 2 and the female connector 1 are connected to each other, the mounting block 25 on the second housing 9 drives the third hollow tube 26 and the annular block 27 to move synchronously. The annular block 27 abuts against the first hollow tube 20 on the push plate 18, so that the push plate 18 moves in the sealing rubber box 17. The fourth spring 19 accumulates force. During the movement of the push plate 18, the sealant in the sealing rubber box 17 can be squeezed into the L-shaped flow pipe 21. The valve 22 in the initial state is abutted by the first abutting wedge 24 fixed at the lower end of the valve stem 23, so that the flow hole of the valve plate in the valve 22 can be realized. The valve 22 is in communication with the L-shaped flow tube 21. When the valve 22 is in an open state, the sealant can flow into one end of the first shell 3, so as to seal the gap between the first cable 4 and the first shell 3. At the same time, the sealant can flow into one end of the female connector 1 through the channel between the female connector 1 and the first shell 3, so as to seal the gap between the female connector 1 and the male connector 2, and further improve the sealing effect. When the sealant solidifies, water can be prevented from entering the first shell 3, causing leakage of the first cable 4.

[0039] When the glue filling is completed inside the first shell 3, when the first resistance wedge block 24 releases the resistance force, the valve stem 23 moves downward under the action of the elastic force, causing the flow hole of the valve plate and the L-shaped flow tube 21 to be misaligned, so that the valve 22 can be automatically closed, and the sealant is stopped from continuing to enter the first shell 3, so that the pressure inside the sealant box 17 increases. When the third hollow tube 26 continues to move, the third hollow tube 26 can be inserted into the first hollow tube 20 to resist the plugging component. At the same time, the annular block 27 slides on the third hollow tube 26, and the sixth spring 28 accumulates force. During the movement, the third hollow tube 26 can push the second hollow tube 201 in the plugging component to move toward the inside of the sealant box 17 The fifth spring 203 between the limit piece 202 and the push plate 18 accumulates force, so that the plurality of flow slots 204 opened on the second hollow tube 201 can be connected with the sealing glue box 17. The remaining sealant in the sealing glue box 17 flows into the first hollow tube 20 through the flow slot 204, and then flows into one end of the second shell 9 through the third hollow tube 26, so as to seal the gap between the second cable 10 and the second shell 9. After the sealant solidifies, it can prevent underground water from entering the second shell 9 and causing leakage of the second cable 10. Sealing by filling with glue can further improve the service life and safety performance of the first cable 4 and the second cable 10 after connection.

[0040] Embodiment 3: This embodiment is an improvement made on the basis of Embodiment 2. For details, please refer to Figures 1 to 8 A guide rod 101 is slidably connected to one side of the connecting female head 1, a seventh spring 102 is connected between the guide rod 101 and the connecting female head 1, a sealing film 29 is provided on the glue outlet of the sealing glue box 17, a push rod 30 is slidably connected to the L-shaped circulation tube 21, an eighth spring 301 is connected between the push rod 30 and the L-shaped circulation tube 21, the upper end of the push rod 30 is against the sealing film 29, and the lower end of the push rod 30 is fixed with a first contact head 31.

[0041] Two first sliding rods 32 are fixed at the end of the first shell 3, and first blocking pieces 33 are arranged on both sides of the first cable 4. The first blocking piece 33 is elastically connected to the first sliding rod 32 through the ninth spring 34. A second interference wedge 35 is fixed to the first blocking piece 33. One side of the second interference wedge 35 is in contact with the first interference frame 36. The first interference frame 36 is elastically connected to the first shell 3 through the tenth spring 361. The first interference wedge 24 is in contact with the first interference frame 36. One side of the first interference frame 36 is in contact with the second interference head 37. The second interference head 37 is elastically connected to the first shell 3 through the eleventh spring 38.

[0042] Two second sliding rods 39 are fixed to the end of the second shell 9, and second blocking pieces 40 are provided on both sides of the second cable 10. The second blocking pieces 40 are elastically connected to the second sliding rods 39 through a twelfth spring 41. A third interference wedge block 42 is fixed to the second blocking piece 40, and one side of the third interference wedge block 42 is in contact with a second interference frame 43. The second interference frame 43 is elastically connected to the second shell 9 through a thirteenth spring 44.

[0043] A through hole 45 is formed on the male connector 2 , and a second plug post 46 is fixed on the female connector 1 . The through hole 45 is adapted to fit the second plug post 46 .

[0044] refer to Figure 5 The sealing film 29 can be used to temporarily block the glue outlet of the sealing glue box 17 to prevent the sealant from flowing into the first housing 3 when the device is not in use, thereby affecting the connection of the first cable 4. Therefore, when the device is in use, the sealing film 29 can be broken to allow the sealant to flow and perform glue filling. Figure 2-Figure 8When the male connector 2 and the female connector 1 are inserted into each other, the first plug 16 contacts the hollow contact head 5 and then continues to move, which can achieve the purpose of contacting the guide rod 101. The seventh spring 102 accumulates force, and one end of the guide rod 101 contacts the first contact head 31, prompting the first contact head 31 to drive the push rod 30 to slide vertically on the L-shaped flow tube 21. The eighth spring 301 accumulates force, which can achieve the purpose of the push rod 30 breaking the sealing film 29, so that the sealant can flow into the L-shaped flow tube 21. When the guide rod 101 continues to move, it may come into conflict with the second contact head 37, the eleventh spring 38 accumulates force, and the second contact head 37 moves downward under the influence of the conflicting force, which can achieve the purpose of conflicting with the first contact frame 36. The first contact frame 36 moves horizontally when it is conflicted, and the tenth spring 361 accumulates force. During the movement, the first contact frame 36 can achieve the purpose of conflicting with the second contact wedge 35. The ninth spring 34 accumulates force, prompting the first blocking piece 33 to move between the two fixed ends of the first shell 3 The first sliding rod 32 moves horizontally on the first sliding rod 32, so as to achieve the purpose of sealing the gap between the first cable 4 and the end of the first shell 3, improve the effect of sealing glue filling, reduce the overflow of sealing glue and reduce waste. At the same time, the first contact frame 36 can release the restriction on the first contact wedge 24, prompting the valve stem 23 at the lower end of the valve 22 to move vertically under the action of elastic force, so as to achieve the purpose of automatically closing the valve 22 and stopping the injection of glue, so as to facilitate the sealant in the sealing glue box 17 to flow into the second shell 9. The second plug 46 fixed on the connecting female head 1 can penetrate the through hole 45 and contact the second contact frame 43 in the second shell 9 when the connecting male head 2 and the connecting female head 1 are inserted. The thirteenth spring 44 accumulates force, prompting the second contact frame 43 to move horizontally and contact the third contact wedge 42 on the second blocking piece 40. The twelfth spring 41 accumulates force, so as to achieve the purpose of automatically moving the second blocking piece 40 to seal the gap between the second cable 10 and the end of the second shell 9, reduce the overflow of sealant and reduce waste.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A cable connection device for power construction, comprising a female connector (1) and a male connector (2), characterized in that: A first shell (3) is fixed on the outer side of the connecting female head (1), one end of the connecting female head (1) is connected to a first cable (4), one side of the connecting female head (1) is slidably connected to a hollow contact head (5), a first spring (6) is connected between the hollow contact head (5) and the connecting female head (1), a positioning column (7) is slidably connected inside the hollow contact head (5), and a second spring (8) is connected between the positioning column (7) and the hollow contact head (5); A second shell (9) is fixed to the outer side of the connecting male head (2), a second cable (10) is connected to one end of the connecting male head (2), and a first plug post (16) is fixed to one side of the connecting male head (2), a circular hole (11) is provided in the connecting male head (2), and a positioning hole (47) is provided on one side of the connecting male head (2), an inflatable sealing ring (12) is provided at one end of the connecting male head (2), and a piston assembly for supplying air to the inflatable sealing ring (12) is provided in the circular hole (11); The piston assembly comprises a piston plate (111), the piston plate (111) is slidably connected in the circular hole (11), a piston rod (112) is fixed to one end of the piston plate (111), and the piston plate (111) is elastically connected to the connecting male head (2) via a third spring (113); A sealing rubber box (17) is fixed on the first shell (3), a push plate (18) is slidably connected to the sealing rubber box (17), a fourth spring (19) is connected between the push plate (18) and the sealing rubber box (17), a first hollow tube (20) is fixed on the push plate (18), a blocking component is arranged in the first hollow tube (20), an L-shaped flow tube (21) matching with the sealing rubber box (17) is fixed in the second shell (9), a valve (22) is arranged on the L-shaped flow tube (21), a valve stem (23) is arranged at the lower end of the valve (22), and a first abutting wedge (24) is fixed at the lower end of the valve stem (23); The blocking assembly comprises a second hollow tube (201), the second hollow tube (201) is slidably connected inside the first hollow tube (20), a limiting plate (202) is fixed at one end of the second hollow tube (201), the limiting plate (202) is elastically connected to the push plate (18) via a fifth spring (203), and a plurality of flow grooves (204) are provided on the second hollow tube (201).

2. The cable connection device for electric power construction according to claim 1, characterized in that: A mounting block (13) is fixed on the first shell (3), a fixing strip (14) for matching the mounting block (13) is fixed on the second shell (9), and a circular sealing ring (15) is provided at the end of the male connector (2).

3. The cable connection device for electric power construction according to claim 2, characterized in that: A mounting block (25) is fixed on the second shell (9), a third hollow tube (26) is fixed on the mounting block (25), an annular block (27) is slidably connected to the third hollow tube (26), the annular block (27) is elastically connected to the mounting block (25) via a sixth spring (28), and the third hollow tube (26) is connected to the second shell (9).

4. The cable connection device for electric power construction according to claim 3, characterized in that: A guide rod (101) is slidably connected to one side of the connecting female head (1), a seventh spring (102) is connected between the guide rod (101) and the connecting female head (1), a sealing film (29) is provided on the glue outlet of the sealing glue box (17), a push rod (30) is slidably connected to the L-shaped circulation tube (21), an eighth spring (301) is connected between the push rod (30) and the L-shaped circulation tube (21), the upper end of the push rod (30) is against the sealing film (29), and the lower end of the push rod (30) is fixed with a first contact head (31).

5. The cable connection device for electric power construction according to claim 4, characterized in that: Two first sliding bars (32) are fixed at the end of the first shell (3), and first blocking sheets (33) are arranged on both sides of the first cable (4). The first blocking sheets (33) are elastically connected to the first sliding bars (32) through a ninth spring (34). A second contact wedge (35) is fixed to the first blocking sheet (33), and one side of the second contact wedge (35) contacts with a first contact frame (36). The first contact frame (36) is elastically connected to the first shell (3) through a tenth spring (361). The first contact wedge (24) contacts the first contact frame (36), and one side of the first contact frame (36) contacts with a second contact head (37). The second contact head (37) is elastically connected to the first shell (3) through an eleventh spring (38).

6. The cable connection device for electric power construction according to claim 5, characterized in that: Two second sliding bars (39) are fixed at the end of the second shell (9), and second blocking pieces (40) are arranged on both sides of the second cable (10). The second blocking piece (40) is elastically connected to the second sliding bar (39) via a twelfth spring (41), and a third abutting wedge (42) is fixed to the second blocking piece (40), and one side of the third abutting wedge (42) abuts against a second abutting frame (43), and the second abutting frame (43) is elastically connected to the second shell (9) via a thirteenth spring (44).

7. The cable connection device for electric power construction according to claim 6, characterized in that: The male connector (2) is provided with a through hole (45), the female connector (1) is fixed with a second plug post (46), and the through hole (45) is adapted to fit the second plug post (46).

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