Electric grounding wire

Abstract

An electric grounding wire disclosed by the present invention comprises a shell, a fixed seat, a spring, a sliding seat, an electric push rod, a moving part and a clamping part, the lower end of the shell is provided with an interface for connecting an insulating rod, the fixed seat is fixedly connected in the shell, the upper side of the fixed seat supports the sliding seat through the spring, and the electric push rod is axially installed in the shell in parallel. The lower end of the electric push rod is installed on the sliding seat, the upper end of the electric push rod extends out of the shell and is connected with the moving part, the clamping part is installed at the upper end of the shell and extends to the position above the moving part, and a clamping space which is provided with an opening in one side and used for clamping a cable is formed between the clamping part and the moving part; and the sensor is arranged on the fixed seat. According to the invention, the cable can be clamped more firmly, and the clamping state of the grounding wire can be monitored in real time.

Description

Technical Field

[0001] The invention relates to the technical field of grounding wires, and in particular to an electric grounding wire. Background Art

[0002] When inspecting the line, it is necessary to install a grounding wire to ensure the safety of the operation. The existing grounding wire is shown in the patent with application number CN202210295782.0, which includes an operating rod, a clamping part, a moving part, an electric push rod and a position detection device. When in use, the electric push rod drives the moving part to clamp the cable, and the position detection device monitors whether the grounding wire falls. The above grounding wire has the following disadvantages. First, after the moving part clamps the cable, the electric push rod stops power output. During use, under the influence of wind, the moving part is easy to loosen; second, the clamping state of the grounding wire cannot be monitored in real time. After the grounding wire loosens the cable, it cannot be discovered in time, affecting the safety of the operation. Summary of the invention

[0003] In order to solve the shortcomings of the existing grounding wire being easy to loosen and being unable to monitor the clamping state of the grounding wire in real time, the present invention provides an electric grounding wire that can clamp the cable more firmly and can monitor the clamping state of the grounding wire in real time.

[0004] To achieve the above object, the present invention adopts the following technical solution: An electric grounding wire comprises a shell, a fixed seat, a spring, a sliding seat, an electric push rod, a moving part and a clamping part. The lower end of the shell is provided with an interface for connecting an insulating rod. The fixed seat is connected in the shell. The upper side of the fixed seat supports the sliding seat through a spring. The electric push rod is axially parallel and installed in the shell. The lower end of the electric push rod is installed on the sliding seat, and the upper end extends to the outside of the shell and is connected to the moving part. The clamping part is installed at the upper end of the shell and extends above the moving part. A clamping space with an opening on one side is formed between the clamping part and the moving part and is used to clamp a cable. The grounding wire also comprises a battery for power supply and a sensor installed on the fixed seat. When clamping the cable, the electric push rod drives the moving part upward to clamp the cable, the spring is compressed, the sliding seat moves downward with the upper end of the spring to contact the sensor, and the electric push rod stops. When the sliding seat moves upward with the upper end of the spring to disengage from the sensor, the sensor sends a loosening signal.

[0005] Furthermore, the grounding wire also includes a positioning device installed in the shell, which is used to locate the longitude, latitude and altitude of the grounding wire.

[0006] Furthermore, a first chamber and a second chamber are provided at the lower end of the shell, the battery is installed in the first chamber, a charging interface electrically connected to the battery and a positioning device are provided in the second chamber, and the charging interface socket is exposed in the interface.

[0007] Furthermore, the clamping portion is in a 7-shape, including a vertical section extending in the vertical direction, and a horizontal section connected to the upper end of the vertical section and extending in the horizontal direction. The lower end of the vertical section is installed on one side of the upper end of the shell, and the horizontal section is arranged parallel to the moving part to cooperate with the moving part to clamp the cable.

[0008] Furthermore, a first V-shaped groove is arranged on the lower side of the middle part of the horizontal section, and a second V-shaped groove with an opening facing the first V-shaped groove is arranged on the upper side of the middle part of the moving part.

[0009] Furthermore, a guide plate is vertically slidably connected to the side of the horizontal section near one end of the vertical section, and a guide surface is provided on the side of the guide plate facing the opening of the clamping space, the upper end of the guide surface extends toward the first V-shaped groove, and the lower end is inclined toward the vertical section.

[0010] Furthermore, a connecting plate is connected to one side of the upper end of the shell, and the lower end of the vertical section is hinged on the connecting plate through a rotating shaft. A slot is arranged at the lower end of the vertical section above the rotating shaft, and the slot includes a first slot portion extending vertically, and a second slot portion horizontally extending from the lower end of the first slot portion to the inner side of the vertical section. A guide groove extending vertically is arranged on the connecting plate, and a limiting shaft is arranged at the upper end of the first slot portion. The limiting shaft passes through the guide groove and is slidably connected to the guide groove. A pull-down assembly is connected to the end of the limiting shaft, and an installation groove is arranged on one side of the first slot portion close to the clamping space. A steel ball is arranged at the notch of the installation groove. The steel ball at least partially protrudes out of the installation groove and abuts against the lower side of the limiting shaft. The steel ball is connected to the bottom of the installation groove through a return spring.

[0011] Furthermore, the pull-down assembly includes a sliding frame and a pull ring. The sliding frame is slidably connected to the side of the connecting plate. The side of the sliding frame is provided with an avoidance groove extending vertically for avoiding the end of the rotating shaft. The end of the limit shaft is radially stopped and installed on the sliding frame. The pull ring is connected to the lower side of the sliding frame.

[0012] The pull ring makes it convenient for ground workers to pull down the sliding frame with a hook, and the sliding frame drives the limiting shaft to move downward to open the clamping part.

[0013] Furthermore, a receiving groove is provided on the lower side of one end of the moving part away from the vertical section, and a through hole is provided on the end of the receiving groove away from the vertical section, which passes through the upper side of the moving part. The receiving groove is rotatably connected to an anti-detachment hook through a torsion spring, and the upper end of the shell is connected to a support platform at the lower side of the anti-detachment hook, and the moving part and the anti-detachment hook are both against the support platform; after the moving part clamps the cable upward, the anti-detachment hook rotates under the action of the torsion spring, and the end of the anti-detachment hook away from the vertical section protrudes from the upper side of the moving part through the through hole.

[0014] Furthermore, a plurality of guide rods are coaxially and parallelly connected in the shell, the sliding seat comprises a sliding seat body, and an adjusting bolt installed on the lower side of the sliding seat body, the sliding seat body is slidably connected to the guide rod, the guide rod is provided with a limiting surface that abuts against the upper side of the sliding seat body, the sensor comprises a base and a pressure sensor arranged on the upper side of the base, the adjusting bolt is arranged above the pressure sensor, the base passes through the fixed seat and is frictionally and slidably connected to the fixed seat, the lower end of the spring is connected to the fixed seat, and the upper end abuts against the sliding seat body, the upper end of the spring is connected to a connecting rod, the connecting rod passes through the fixed seat and is slidably connected to the fixed seat, the lower end of the connecting rod is connected to a support plate, and the support plate abuts against the lower side of the base.

[0015] During operation, after the electric push rod drives the moving part to clamp the cable, the spring continuously outputs clamping force to the cable, the cable is not easy to loosen, and the cable is clamped more firmly; the sensor can monitor the clamping state, and send out a loosening signal when the cable is loose, which is convenient for staff to check. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of a grounding wire of an embodiment, Figure 2 An internal view of the ground wire of an embodiment, Figure 3 for Figure 2 A magnified image of Figure 4 is a cross-sectional view of the ground wire of an embodiment, Figure 5 for Figure 4 The enlarged view of point B, Figure 6 for Figure 4 The enlarged view of point C, Figure 7 is a schematic diagram of the upper side of the cable of the embodiment being embedded in the first V-shaped groove, Figure 8 is a schematic diagram of a ground wire clamping cable of an embodiment, Fig. 9 This is a schematic diagram of the layout of the grounding wire in the initial state of the second embodiment, Fig.10 This is a schematic diagram of the grounding wire of the second embodiment when the cable is clamped. Fig.11 A schematic diagram of the spring of the second embodiment being disengaged from the sliding seat body after fatigue; In the figure, 1 is the housing 1, 2 is the fixing seat, and 3 is the spring. 4 is a sliding seat, 41 is a sliding seat body, 42 is an adjusting bolt, 5 is the electric push rod, 6 is the moving part, 7 is a clamping portion, 71 is a vertical section, 72 is a horizontal section, 8 is the interface, 9 is the clamping space, 10 is the battery, 11 is a sensor, 111 is a base, 112 is a pressure sensor, 12 is a positioning device, 13 is a first chamber, 14 is a second chamber, 15 is a charging interface, 16 is a first V-shaped groove, 17 is a second V-shaped groove, 18 is a guide plate, 19 is a guide surface, 20 is a connecting plate, 21 is a rotating shaft, 22 is a card slot, 221 is a first slot portion, 222 is a second slot portion, 23 is a guide slot, 24 is a limit axis, 25 is a pull-down assembly, 251 is a sliding frame, 252 is a pull ring, 26 is a mounting groove, 27 is a steel ball, 28 is a return spring, 29 is an avoidance groove, 30 is an accommodating groove, 31 is a through hole, 32 is a torsion spring, 33 is an anti-unhooking hook, 34 is a supporting platform, 35 is a guide rod, 36 is a limiting surface, 37 is a connecting rod, and 38 is a supporting plate. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0018] like Figures 1 to 11 As shown, an electric grounding wire comprises a shell 1, a fixed seat 2, a spring 3, a sliding seat 4, an electric push rod 5, a moving part 6 and a clamping part 7. The lower end of the shell 1 is provided with an interface 8 for connecting an insulating rod. The fixed seat 2 is connected in the shell 1. The upper side of the fixed seat 2 supports the sliding seat 4 through the spring 3. The electric push rod 5 is axially parallel and installed in the shell 1. The lower end of the electric push rod 5 is installed on the sliding seat 4, and the upper end extends to the outside of the shell 1 and is connected to the moving part 6. The clamping part 7 is installed at the upper end of the shell 1 and extends above the moving part 6. A clamping space 9 with an opening on one side and used for clamping a cable 200 is formed between the clamping part 7 and the moving part 6. The grounding wire also includes a battery 10 for power supply, and a sensor 11 installed on the fixed seat 2; when clamping the cable, the electric push rod 5 drives the moving part 6 upward to clamp the cable, the spring 3 is compressed, and the sliding seat 4 contacts the sensor 11 with the upper end of the spring 3 downward, and the electric push rod 5 stops; when the sliding seat 4 disengages from the sensor 11 with the upper end of the spring 3 upward, the sensor 11 sends a loosening signal.

[0019] Through the above arrangement, firstly, after the electric push rod 5 drives the moving part 6 to clamp the cable, the spring 3 continuously outputs the clamping force to the cable, the cable is not easy to loosen, and the cable is clamped more firmly; secondly, the sensor 11 can monitor the clamping state and send out a loosening signal when the cable is loose, so as to facilitate the inspection of the staff.

[0020] The housing 1 in the present invention is basically a cylindrical structure, and the upper end of the insulating rod can be screwed into the interface 8 through a thread, which is convenient for holding; the lower end of the electric push rod 5 is installed on the upper side of the fixed seat 2, and is supported by the sliding seat 4 and the spring 3, and can move axially in the housing 1 with the sliding seat 4, and the moving part 6 basically extends horizontally, and a clamping space 9 with an open side is formed between the moving part 6 and the clamping part 7. Initially, the sliding seat 4 is separated from the sensor 11, and the spring 3 is basically in a free state, that is, the expansion and contraction amount of the spring 3 is basically zero; when clamping the cable, the cable enters the clamping space 9, and the battery 10 supplies power to the electric push rod 5, and the electric push rod 5 extends to drive the moving part 6 to move upward until the clamping part 7 and the moving part 6 contact the upper and lower sides of the cable. In this process, the spring 3 basically does not expand and contract; as the electric push rod 5 continues to extend, the spring 3 contracts, and the sliding seat 4 approaches the sensor 11 downward along the housing 1, the clamping force of the clamping part 7 and the moving part 6 on the cable increases, and the sliding seat 4 and the sensor After the sensor 11 contacts, the sensor 11 sends a command to the electric push rod 5 through the controller built into the housing 1, and the electric push rod 5 stops; the clamping force of the clamping part 7 and the moving part 6 of the present invention to clamp the cable is basically equal to the product of the stiffness and compression of the spring 3, and the clamping force can be adjusted by adjusting the initial distance between the sliding seat 4 and the sensor 11; after the grounding wire is installed on the cable, the spring 3 continuously outputs thrust to prevent the cable from being loosened; when the cable is accidentally loosened, or the electric push rod 5 is accidentally shortened, the sliding seat 4 moves upward along the housing 1 and disengages from the sensor 11, and the sensor 11 sends a loosening signal, which can be sent to the control background in the form of a wireless signal. After the background staff sees the signal, they go to the grounding wire to re-clamp the grounding wire; in addition, the loosening signal is also transmitted to the controller built into the housing 1, and the controller automatically restarts the electric push rod 5 to supplement the clamping force. After the sliding seat 4 contacts the sensor 11 again, the electric push rod 5 stops. The clamping part 7 of the present invention is connected to the wire, and after the wire is grounded, the cable is grounded.

[0021] As an implementation method, the grounding wire further includes a positioning device 12 installed in the housing 1, which is used to locate the longitude, latitude and altitude of the grounding wire. The positioning device is, for example, Beidou, GPS and the like.

[0022] The above settings make it easier to manage the ground wire in the background.

[0023] The positioning device 12 in the present invention can be positioned by GPS, which is convenient for background staff to understand the location of the grounding wire and facilitate maintenance; in addition, by monitoring the height data of the grounding wire, it can be known whether the grounding wire has fallen.

[0024] As an implementation method, a first chamber 13 and a second chamber 14 are provided at the lower end of the shell 1, and the battery 10 is installed in the first chamber 13. A charging interface 15 electrically connected to the battery 10 and a positioning device 12 are provided in the second chamber 14, and the charging interface 15 socket is exposed in the interface 8.

[0025] Through the above arrangement, it is convenient to charge the battery 10 through the charging interface 15 , and the charging interface 15 is not easy to be flooded in the interface 8 .

[0026] As an implementation method, the clamping portion 7 is in a 7-shape, including a vertical section 71 extending in the vertical direction, and a horizontal section 72 connected to the upper end of the vertical section 71 and extending in the horizontal direction. The lower end of the vertical section 71 is installed on one side of the upper end of the shell 1, and the horizontal section 72 is arranged in parallel above the moving part 6, for cooperating with the moving part 6 to clamp the cable.

[0027] The horizontal section 72 in the present invention is supported above the moving part 6 by the vertical section 71, and the cable is placed between the horizontal section 72 and the moving part 6. The electric push rod 5 drives the moving part 6 to move upward, and the moving part 6 and the horizontal section 72 clamp the cable. The electric push rod 5 drives the moving part 6 to move downward, and the moving part 6 and the horizontal section 72 loosen the cable.

[0028] As an implementation manner, a first V-shaped groove 16 is provided on the lower middle side of the horizontal section 72 , and a second V-shaped groove 17 with an opening toward the first V-shaped groove 16 is provided on the upper middle side of the moving portion 6 .

[0029] Through the above arrangement, the cable is prevented from coming out from between the clamping part 7 and the moving part 6, and the grounding wire is prevented from falling off.

[0030] After the clamping portion 7 and the moving portion 6 in the present invention clamp the cable, the upper side of the cable is embedded in the first V-shaped groove 16, and the lower side of the cable is embedded in the second V-shaped groove 17, so as to prevent the cable from moving laterally between the horizontal section 72 and the moving portion 6. Even after the horizontal section 72 and the moving portion 6 release the cable, the cable will not fall out from between the horizontal section 72 and the moving portion 6, so that the grounding wire will fall off the cable.

[0031] As an implementation method, the side of the horizontal section 72 close to one end of the vertical section 71 is vertically slidably connected with a guide plate 18, and a guide surface 19 is provided on the side of the guide plate 18 facing the opening of the clamping space 9, and the upper end of the guide surface 19 extends toward the first V-shaped groove 16, and the lower end is inclined toward the vertical section 71.

[0032] Through the above arrangement, it is convenient to guide the upper side of the cable into the first V-shaped groove 16 during installation and then clamp it.

[0033] The guide plate 18 in the present invention is basically a right triangle structure, with a horizontal upper side, a vertical side facing the vertical section 71, and a hypotenuse facing the opening of the clamping space 9; the guide plate 18 can slide up and down relative to the horizontal section 72. In the initial state, under the action of gravity, the lower end of the guide plate 18 is close to the moving part 6, and the upper end of the guide surface 19 extends toward the first V-shaped groove 16, such as Figure 7As shown, during installation, the upper end of the insulating rod is installed at the lower end of the housing 1 through the interface 8. The grounding wire is lifted by the insulating rod. After the cable contacts the guide surface 19 of the guide plate 18, the operator lowers the grounding wire. Under the guidance of the guide surface 19, the upper side of the cable is embedded in the first V-shaped groove 16. After the electric push rod 5 drives the moving part 6 to move upward, the moving part 6 clamps the cable, and the lower side of the cable is embedded in the second V-shaped groove 17. Figure 8 shown.

[0034] As an implementation method, a connecting plate 20 is connected to one side of the upper end of the shell 1, and the lower end of the vertical section 71 is hinged on the connecting plate 20 through the rotating shaft 21. A slot 22 is arranged at the lower end of the vertical section 71 above the rotating shaft 21. The slot 22 includes a first slot portion 221 extending vertically, and a second slot portion 222 horizontally extending from the lower end of the first slot portion 221 to the inner side of the vertical section 71. A guide slot 23 extending vertically is arranged on the connecting plate 20, and a limiting shaft 24 is arranged at the upper end of the first slot portion 221. The limiting shaft 24 passes through the guide slot 23 and is slidably connected to the guide slot 23. A pull-down assembly 25 is connected to the end of the limiting shaft 24. A mounting slot 26 is arranged on the side of the first slot portion 221 close to the clamping space 9, and a steel ball 27 is arranged at the notch of the mounting slot 26. The steel ball 27 at least partially protrudes out of the mounting slot 26 and abuts against the lower side of the limiting shaft 24. The steel ball 27 is connected to the bottom of the mounting slot 26 through a return spring 28.

[0035] Through the above arrangement, after the electric push rod 5 fails, the grounding wire can be removed from the cable by pulling down the pull-down assembly 25 .

[0036] In the initial state of the grounding wire in the present invention, Figure 6 As shown, the limit shaft 24 is located at the upper end of the guide groove 23 and the first groove portion 221, and the steel ball 27 prevents the limit shaft 24 from falling. Under the limit shaft 24, the clamping portion 7 cannot move around the rotating shaft 21, and the moving portion 6 can clamp or release the cable under the action of the electric push rod 5; after the electric push rod 5 fails, the pull-down component 25 is pulled down, and the pull-down component 25 applies a downward force to the limit shaft 24 after being pulled, and the limit shaft 24 squeezes the steel ball 27, and the steel ball 27 compresses the reset spring 28 and moves into the installation groove 26. The limit shaft 24 moves downward along the guide groove 23 and the first groove portion 221 to the second groove portion 222, and the limit shaft 24 is located below the steel ball 27. The steel ball 27 is reset under the action of the reset spring 28, and the second groove portion 222 is used to avoid the limit shaft 24. The limit shaft 24 can be disengaged from the clamping portion 7 through the second groove portion 222, that is, the clamping portion 7 can be opened outward around the rotating shaft 21 to release the cable.

[0037] As an implementation method, the pull-down assembly 25 includes a sliding frame 251 and a pull ring 252. The sliding frame 251 is slidably connected to the side of the connecting plate 20. The side of the sliding frame 251 is provided with an avoidance groove 29 extending vertically for avoiding the end of the rotating shaft 21. The end of the limit shaft 24 is radially stopped and installed on the sliding frame 251. The pull ring 252 is connected to the lower side of the sliding frame 251.

[0038] Through the above arrangement, the pull ring 252 drives the limiting shaft 24 to move up and down through the sliding frame 251 , and the sliding frame 251 avoids the end of the rotating shaft 21 through the avoiding groove 29 .

[0039] The pull ring 252 is convenient for ground workers to pull down the sliding frame 251 with a hook, and the sliding frame 251 drives the limiting shaft 24 to move downward to open the clamping part 7.

[0040] As an implementation method, a receiving groove 30 is provided on the lower side of one end of the movable part 6 away from the vertical section 71, and a through hole 31 is provided on the end of the receiving groove 30 away from the vertical section 71, which passes through the upper side of the movable part 6. The receiving groove 30 is rotatably connected to an anti-detachment hook 33 through a torsion spring 32, and the upper end of the shell 1 is connected to a support platform 34 on the lower side of the anti-detachment hook 33, and the movable part 6 and the anti-detachment hook 33 are both against the support platform 34; after the movable part 6 clamps the cable upward, the anti-detachment hook 33 rotates under the action of the torsion spring 32, and the end of the anti-detachment hook 33 away from the vertical section 71 protrudes from the upper side of the movable part 6 through the through hole 31.

[0041] Through the above arrangement, the ground wire is further prevented from falling off the cable.

[0042] When the grounding wire in the present invention is in the initial state, the electric push rod 5 is in the shortest state, the lower side of the moving part 6 and the lower side of the anti-detachment hook 33 are both against the upper side of the support platform 34, the torsion spring 32 is in a twisted state, and the anti-detachment hook 33 is located in the accommodating groove 30 as a whole, that is, the upper side of the anti-detachment hook 33 does not protrude from the upper side of the moving part 6, which facilitates the cable to enter the clamping space 9, the electric push rod 5 drives the moving part 6 to clamp the cable upward, the moving part 6 is separated from the support platform 34 upward, the torsion spring 32 rebounds and drives the anti-detachment hook 33 to rotate, and the end of the anti-detachment hook 33 protrudes from the upper side of the moving part 6 through the through hole 31, as shown in FIG. Figure 8 As shown, the cable can be prevented from leaving the clamping space 9.

[0043] In another embodiment, if Figures 9 to 11As shown, a plurality of guide rods 35 are coaxially and parallelly connected in the shell 1, the sliding seat 4 includes a sliding seat body 41, and an adjusting bolt 42 installed on the lower side of the sliding seat body 41, the sliding seat body 41 is slidably connected to the guide rod 35, and the guide rod 35 is provided with a limiting surface 36 that abuts against the upper side of the sliding seat body 41, the sensor 11 includes a base 111 and a pressure sensor 112 arranged on the upper side of the base 111, the adjusting bolt 42 is arranged above the pressure sensor 112, the base 111 passes through the fixed seat 2 and is frictionally and slidably connected to the fixed seat 2, the lower end of the spring 3 is connected to the fixed seat 2, and the upper end abuts against the sliding seat body 41, the upper end of the spring 3 is connected to a connecting rod 37, the connecting rod 37 passes through the fixed seat 2 and is slidably connected to the fixed seat 2, the lower end of the connecting rod 37 is connected to a supporting plate 38, and the supporting plate 38 abuts against the lower side of the base 111.

[0044] In actual projects, the ground wire often takes many days to be installed on the cable. The spring 3 is in a compressed state for a long time, and is easily fatigued, resulting in its length being shortened, that is, the length of the spring 3 after rebounding is less than the initial length of the spring 3, resulting in that, when the sliding seat 4 contacts the sensor 11 next time, although the sensor 11 sends a locking signal, the compression amount of the spring 3 is too small, which in turn causes the clamping force on the cable to be too small. The above arrangement can prevent the situation where the clamping force is insufficient due to the fatigue of the spring 3.

[0045] Specifically, there are at least three guide rods 35, which are evenly arranged along the inner circumference of the shell 1. The guide rods 35 penetrate the sliding seat body and are slidably connected to the sliding seat body. The limiting surface 36 of the guide rod 35 limits the sliding range of the sliding seat 4, and the sliding seat 4 can stably slide up and down along the guide rod 35 below the limiting surface 36; the base 111 is frictionally and slidably connected to the fixed seat 2, and there is friction between the base 111 and the fixed seat 2. When there is no external force acting on the sensor 11, the sensor 11 will not move up and down. When the upward or downward force applied to the sensor 11 exceeds 5N, the sensor 11 slides up or down.

[0046] When the grounding wire is in the initial state in the present invention, the length of the electric push rod 5 is in the shortest state. Fig. 9 As shown, the upper side of the sliding seat body 41 contacts the limit surface 36, the lower side of the moving part 6 contacts the support platform 34, and the electric push rod 5 will not move up and down; the upper end of the spring 3 abuts against the lower side of the sliding seat body 41, and there is basically no pressure, the spring 3 is in a free state, the support plate 38 abuts against the lower side of the base 111, and the vertical distance D1 from the upper end of the spring 3 to the upper side of the pressure sensor 112 is L-D2, wherein L is the vertical distance between the upper and lower ends of the connecting rod 37, and D2 is the vertical distance between the upper and lower ends of the sensor 11.

[0047] like Fig.10As shown, when the electric push rod 5 extends to drive the moving part 6 to clamp the cable upward, the sliding seat body 41 moves downward along the guide rod 35 due to the pressure of the electric push rod, and the adjusting bolt 42 moves downward synchronously with the sliding seat body 41 to approach the pressure sensor 112, the spring 3 is compressed, and the cable is gradually clamped. When the adjusting bolt 42 contacts the pressure sensor 112, the pressure between the adjusting bolt 42 and the pressure sensor 112 increases to a threshold value, and the pressure sensor 112 sends a command to the electric push rod 5 through the controller built into the housing. The electric push rod 5 continues to extend for 2mm and then stops, that is, the electric push rod 5 pushes the sensor 11 to move downward by 2mm; wherein, the threshold value is 3N, so that the adjusting bolt 42 can quickly reach the threshold value after contacting the pressure sensor 112, and when the electric push rod 5 stops, the spring 3 is compressed by an amount h2=D1-h1+2mm, wherein h1 is the height of the adjusting bolt 42.

[0048] like Fig.11 As shown, when the grounding wire releases the cable, the electric push rod 5 shrinks back to the shortest state, the sliding seat body 41 moves upward with the lower end of the electric push rod 5, and contacts the limit surface 36 again, the moving part 6 at the upper end of the electric push rod 5 contacts the support platform 34 again, and the upper end of the spring 3 rebounds, driving the connecting rod 37 and the supporting plate 38 to move upward. After the supporting plate 38 contacts the lower side of the base 111 of the sensor 11, the sensor 11 is pushed to move upward. At this time, if the spring 3 cannot return to its initial length due to fatigue, there is a gap between the upper end of the spring 3 and the lower side of the sliding seat body 41, forming a virtual position, and due to the fatigue of the spring, the pressure sensor cannot return to its original length under the support of the supporting plate. To the initial height, that is, the sinking of the pressure sensor compensates for the above-mentioned virtual position; specifically, since the vertical distance L between the upper and lower ends of the connecting rod 37, the vertical distance D2 between the upper and lower ends of the sensor 11 and the height h1 of the adjusting bolt 42 are all fixed, the vertical distance D3 between the upper end of the spring 3 to the upper side of the pressure sensor 112 after fatigue is equal to the vertical distance D1 between the upper end of the spring 3 to the pressure sensor 112 at the initial time, that is, D3=D1, the next time the grounding wire clamps the cable, the compression amount of the spring 3 is h3=D3-h1+2mm=h2, that is, after the spring 3 is fatigued, the clamping force of the grounding wire on the cable remains basically unchanged, thereby ensuring the reliability of the installation.

[0049] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. An electric grounding wire, characterized in that: It includes a shell, a fixed seat, a spring, a sliding seat, an electric push rod, a moving part and a clamping part. The lower end of the shell is provided with an interface for connecting an insulating rod. The fixed seat is connected in the shell. The upper side of the fixed seat supports the sliding seat through the spring. The electric push rod is axially parallel and installed in the shell. The lower end of the electric push rod is installed on the sliding seat, and the upper end extends to the outside of the shell and is connected to the moving part. The clamping part is installed on the upper end of the shell and extends above the moving part. A clamping space with an opening on one side is formed between the clamping part and the moving part and is used to clamp a cable. The grounding wire also includes a battery for power supply, and a sensor installed on the fixed seat. When clamping the cable, the electric push rod drives the moving part upward to clamp the cable, the spring is compressed, the sliding seat moves downward with the upper end of the spring to contact the sensor, and the electric push rod stops; When the sliding seat is disengaged from the sensor along with the upper end of the spring, the sensor sends a loosening signal.

2. An electric grounding wire according to claim 1, characterized in that: The grounding wire also includes a positioning device installed in the shell, which is used to locate the longitude, latitude and altitude of the grounding wire.

3. An electric grounding wire according to claim 2, characterized in that: The lower end of the shell is provided with a first chamber and a second chamber, the battery is installed in the first chamber, the second chamber is provided with a charging interface electrically connected to the battery, and the positioning device, and the charging interface socket is exposed in the interface.

4. The electric grounding wire according to claim 1, characterized in that: The clamping portion is in a 7-shape, including a vertical section extending in the vertical direction, and a horizontal section connected to the upper end of the vertical section and extending in the horizontal direction. The lower end of the vertical section is installed on one side of the upper end of the shell, and the horizontal section is arranged in parallel above the moving portion to cooperate with the moving portion to clamp the cable.

5. The electric grounding wire according to claim 4, characterized in that: A first V-shaped groove is arranged at the lower side of the middle part of the horizontal section, and a second V-shaped groove is arranged at the upper side of the middle part of the moving part with an opening facing the first V-shaped groove.

6. The electric grounding wire according to claim 5, characterized in that: The side surface of the horizontal section close to one end of the vertical section is vertically slidably connected with a guide plate, and a guide surface is provided on the side of the guide plate facing the opening of the clamping space, the upper end of the guide surface extends toward the first V-shaped groove, and the lower end is inclined toward the vertical section.

7. The electric grounding wire according to claim 4, characterized in that: A connecting plate is connected to one side of the upper end of the shell, and the lower end of the vertical section is hinged on the connecting plate through a rotating shaft. A slot is arranged at the lower end of the vertical section above the rotating shaft, and the slot includes a first slot portion extending vertically, and a second slot portion horizontally penetrating from the lower end of the first slot portion to the inner side of the vertical section. A guide slot extending vertically is arranged on the connecting plate, and a limiting shaft is arranged at the upper end of the first slot portion. The limiting shaft passes through the guide slot and is slidably connected to the guide slot, and a pull-down component is connected to the end of the limiting shaft. A mounting groove is arranged on one side of the first slot portion close to the clamping space, and a steel ball is arranged at the notch of the mounting groove. The steel ball at least partially protrudes out of the mounting groove and abuts against the lower side of the limiting shaft, and the steel ball is connected to the bottom of the mounting groove through a return spring.

8. The electric grounding wire according to claim 7, characterized in that: The pull-down assembly includes a sliding frame and a pull ring. The sliding frame is slidably connected to the side of the connecting plate. The side of the sliding frame is provided with an avoidance groove extending vertically for avoiding the end of the rotating shaft. The end of the limit shaft is radially stopped and installed on the sliding frame. The pull ring is connected to the lower side of the sliding frame.

9. The electric grounding wire according to claim 4, characterized in that: A receiving groove is provided at the lower side of one end of the moving part away from the vertical section, and a through hole is provided at one end of the receiving groove away from the vertical section, which penetrates to the upper side of the moving part. The receiving groove is rotatably connected to an anti-detachment hook through a torsion spring, and the upper end of the shell is connected to a support platform at the lower side of the anti-detachment hook, and the moving part and the anti-detachment hook are both against the support platform; After the moving part clamps the cable upward, the anti-detachment hook rotates under the action of the torsion spring, and one end of the anti-detachment hook away from the vertical section protrudes from the upper side of the moving part through the through hole.

10. An electric grounding wire according to claim 9, characterized in that: A plurality of guide rods are coaxially and parallelly connected in the shell body, the sliding seat comprises a sliding seat body and an adjusting bolt installed on the lower side of the sliding seat body, the sliding seat body is slidably connected to the guide rod, and the guide rod is provided with a limiting surface that abuts against the upper side of the sliding seat body, the sensor comprises a base and a pressure sensor arranged on the upper side of the base, the adjusting bolt is arranged above the pressure sensor, the base passes through the fixed seat and is frictionally and slidably connected to the fixed seat, the lower end of the spring is connected to the fixed seat, and the upper end abuts against the sliding seat body, the upper end of the spring is connected to a connecting rod, the connecting rod passes through the fixed seat and is slidably connected to the fixed seat, the lower end of the connecting rod is connected to a supporting plate, and the supporting plate abuts against the lower side of the base.

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