Electricity testing ground rod with icebreaking function

Abstract

The utility model relates to the technical field of electricity testing grounding rods, and discloses an electricity testing grounding rod with an icebreaking function, which comprises an insulating rod and a wire clamp arranged at the top end of the insulating rod, a grounding wire is arranged on the wire clamp, an electroscope is electrically connected with the wire clamp and arranged in the insulating rod, and an icebreaking device which is not interfered with the electroscope is further arranged on the insulating rod. The ice breaking device comprises a limiting ring located at the bottom end of the insulating rod, the distance between the limiting ring and the bottom face of the insulating rod can be adaptively adjusted according to the size of an iced cable, a lifting rod is arranged in the insulating rod, and the iced cable between the limiting ring and the bottom face of the insulating rod is extruded through the lifting rod to break an ice layer. The ice breaking device is additionally arranged on the basis of an existing electricity testing grounding rod, the ice breaking device is simple in structure, main parts are arranged in the insulating rod, the integration degree between the ice breaking device and the electricity testing grounding rod is high, the overall size change is small, and carrying is convenient.

Description

Technical Field

[0001] This utility model belongs to the technical field of voltage testing grounding rods, specifically relating to a voltage testing grounding rod with ice-breaking function. Background Technology

[0002] Currently, with the rapid development of economic construction, the scale of the power system has expanded accordingly, and the scope and workload of operating and maintaining the power system have become increasingly heavy. In actual construction and maintenance work, especially for high-voltage cables, it is necessary to verify whether the cable is energized before carrying out power construction. For this purpose, workers usually carry a voltage tester and grounding rod with them to confirm whether the cable is energized. If the cable has residual electricity, the residual electricity is conducted to the ground through the grounding wire on the clamp, thereby achieving safe construction conditions.

[0003] In existing technologies, voltage testing grounding rods typically include a metal clamp fixedly connected to one end of an insulating rod. An electroscope is connected to the metal clamp and placed inside the insulating rod. The electroscope senses current and emits an alarm sound and light to warn workers. However, in icy or snowy weather, the outer layer of cables often freezes, specifically, the insulating ice layer covers the cable, rendering existing voltage testing grounding rods unable to verify whether the cable is energized and to ensure safe grounding. Summary of the Invention

[0004] In view of this, the purpose of this utility model is to provide a voltage testing grounding rod with ice-breaking function, so as to solve the technical problem that the voltage testing grounding rod in the prior art cannot detect and ground cables covered with ice.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A grounding rod with ice-breaking function is characterized by comprising an insulating rod and a clamp located at the top of the insulating rod. The clamp is provided with a grounding wire. An electroscope is electrically connected to the clamp and placed inside the insulating rod. The insulating rod is also provided with an ice-breaking device that does not interfere with the electroscope. The ice-breaking device includes a limiting ring located at the bottom of the insulating rod. The distance between the limiting ring and the bottom surface of the insulating rod can be adaptively adjusted according to the size of the iced cable. The insulating rod is provided with a lifting rod. The lifting rod squeezes the iced cable between the limiting ring and the bottom surface of the insulating rod to break the ice layer.

[0007] Furthermore, a fixing ring is fitted on the outer surface of the bottom end of the insulating rod. The bottom surface of the fixing ring coincides with the bottom surface of the insulating rod. A slot is opened on the bottom surface of the fixing ring along the height direction. A telescopic block is provided in the slot and is slidably connected to the slot. The length of the telescopic block is greater than the depth of the slot. A limiting ring is provided at the end of the telescopic block away from the fixing ring.

[0008] Furthermore, multiple threaded holes are opened along the height direction on the outer wall of the slot, and clamping screws are threaded into the threaded holes. By screwing in the clamping screws, the telescopic block can be clamped and fixed, thereby adjusting the distance between the limit ring and the bottom surface of the insulating rod.

[0009] Furthermore, an axial cavity is provided inside the insulating rod, and a gap is left between the cavity and the electroscope to ensure that the ice-breaking device and the electroscope will not interfere with each other. A lifting rod is slidably connected inside the cavity. The length of the lifting rod is less than the depth of the cavity. The lifting rod includes a main lifting rod and a coaxial secondary lifting rod is provided at the end of the main lifting rod facing the wire clamp. The diameter of the secondary lifting rod is smaller than the diameter of the main lifting rod.

[0010] Furthermore, a roller is provided on the free end of the auxiliary lifting rod away from the main lifting rod. A single threaded hole is opened on the side wall at the bottom of the receiving cavity. The threaded hole is located between the roller and the bottom of the receiving cavity. A screw is threaded into the threaded hole. A frustum-shaped cylinder coaxial with the rod body is provided on the free end of the screw body. The diameter of the cylinder gradually decreases in the direction away from the screw, and the length of the cylinder is smaller than the inner diameter of the receiving cavity. The side of the cylinder is in contact with the roller.

[0011] The beneficial effects of this utility model are as follows:

[0012] Compared with existing technologies, by adding an ice-breaking device to the existing grounding rod, the ice-breaking device has a simple structure and its main components are built into the insulating rod, which makes the ice-breaking device and the grounding rod highly integrated, with little change in overall size and easy to carry. In addition, the extrusion-type ice-breaking method can prevent damage to the cable during the ice-breaking process, thus providing effective protection for the cable. Attached Figure Description

[0013] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0014] Figure 1 This is a schematic diagram of the overall structure of the grounding rod with ice-breaking function in Embodiment 1 of this utility model;

[0015] Figure 2 This is a schematic diagram of the fixing ring, telescopic block and limiting ring in Embodiment 1 of this utility model, used to show the positional relationship and connection relationship between the three;

[0016] Figure 3 This is a cross-sectional view of the fixing ring, telescopic block, and limiting ring in Embodiment 1 of this utility model;

[0017] Figure 4 This is a cross-sectional view of the grounding rod with ice-breaking function in Embodiment 1 of this utility model;

[0018] Figure 5 for Figure 4 Enlarged view of point A1 in the middle.

[0019] The following labels are shown in the attached diagram:

[0020] Insulating rod 1, fixing ring 101, slot 102, telescopic block 103, limiting ring 104, clamping screw 105, receiving cavity 106, lifting rod 107, main lifting rod 108, auxiliary lifting rod 109, roller 110, threaded hole 111, threaded screw 112, column 113, wire clamp 2, voltage detector 3. Detailed Implementation

[0021] Example 1, specifically as follows Figures 1-5 As shown.

[0022] An ice-breaking grounding rod includes an insulating rod 1 and a clamp 2 located at the top of the insulating rod 1. The clamp 2 is equipped with a grounding wire (not shown in the figure). The two are detachably connected by the grounding clamp. An electroscope 3 is electrically connected to the clamp 2 and placed inside the insulating rod 1. The insulating rod 1 is also equipped with an ice-breaking device that does not interfere with the electroscope 3. The ice-breaking device includes a limiting ring 104 located at the bottom of the insulating rod 1. The distance between the limiting ring 104 and the bottom surface of the insulating rod 1 can be adaptively adjusted according to the size of the icing cable. The insulating rod 1 is equipped with a lifting rod 107 inside. The lifting rod 107 squeezes the icing cable between the limiting ring 104 and the bottom surface of the insulating rod 1 to break the ice layer.

[0023] like Figures 1-3 As shown, the bottom end of the insulating rod 1, which is the end of the insulating rod 1 away from the wire clamp 2, has a fixing ring 101 fitted on its outer surface. In this embodiment, the inner diameter of the fixing ring 101 is the same as the diameter of the insulating rod 1, and the bottom surface of the fixing ring 101 coincides with the bottom surface of the insulating rod 1. The fixing ring 101 and the insulating rod 1 are fixedly connected by threads. A slot 102 is formed on the bottom surface of the fixing ring 101 along the height direction, and the cross-section of the slot 102 is fan-shaped. A telescopic block 103 is provided inside the slot 102 and is slidably connected to the slot 102. That is, the cross-section, shape, and size of the telescopic block 103 are the same as the cross-section, shape, and size of the slot 102, and the length of the telescopic block 103 is greater than the depth of the slot 102.

[0024] A limiting ring 104 is welded to the end of the telescopic block 103 facing away from the fixed ring 101. In this embodiment, the inner and outer diameters of the limiting ring 104 are the same as the inner and outer diameters of the telescopic block 103, respectively. Multiple hemispherical friction protrusions are evenly spaced along the circumferential direction on the inner surface of the limiting ring 104 facing the fixed ring 101. The friction protrusions are integrally formed with the limiting ring 104. These friction protrusions increase the friction between the limiting ring 104 and the icing cable, preventing the icing cable from detaching from the limiting ring 104 under external force during the ice-breaking process. Additionally, a cross-shaped reinforcing member is welded inside the limiting ring 104, which improves the limiting ring 104's resistance to deformation, strength, and other physical and mechanical properties.

[0025] Multiple threaded holes are evenly spaced along the height direction on the outer wall of the slot 102. In this embodiment, a total of three threaded holes are provided and are concentrated at the opening of the slot 102. A clamping screw 105 is threaded into the threaded hole. By screwing in the clamping screw 105, the telescopic block 103 can be clamped and fixed, thereby adjusting the distance between the limiting ring 104 and the bottom surface of the insulating rod 1, and ensuring that the relative distance between the limiting ring 104 and the insulating rod 1 does not change during the ice-breaking process.

[0026] In this embodiment, the voltage detector 3 is installed at the top of the insulating rod 1. The voltage detector senses current and emits an alarm sound and light to warn workers. If there is residual electricity on the cable, it is conducted to the ground through the grounding wire on the clamp 2. The connection relationship and working principle of the insulating rod 1, clamp 2, voltage detector 3, and grounding wire are all existing technologies and will not be elaborated further here. It should be noted that... Figure 4 , Figure 5 As shown, the insulating rod 1 has an axially oriented cavity 106 inside, and there is a gap between the cavity 106 and the electroscope 3, so as to ensure that the ice-breaking device and the electroscope 3 will not interfere with each other.

[0027] The receiving cavity 106 is cylindrical in shape, and its axis coincides with the axis of the insulating rod 1. A lifting rod 107 is slidably connected inside the receiving cavity 106. The length of the lifting rod 107 is less than the depth of the receiving cavity 106. The lifting rod 107 is made of insulating material (rigid plastic). The lifting rod 107 includes a main lifting rod 108, the diameter of which is the same as the inner diameter of the receiving cavity 106. A coaxial secondary lifting rod 109 is welded to one end of the main lifting rod 108 facing the clamp 2. The diameter of the secondary lifting rod 109 is smaller than the diameter of the main lifting rod 108. In this embodiment, the diameter of the secondary lifting rod 109 is one-third of the diameter of the main lifting rod 108.

[0028] A roller 110 is provided on the free end of the lifting rod auxiliary rod 109 away from the lifting rod main rod 108. The roller 110 is fixedly connected to the lifting rod auxiliary rod 109 through the support rods on both sides and the rotating shaft passing through the axis. A single threaded hole 111 is opened on the side wall at the bottom of the receiving cavity 106. The threaded hole 111 is located between the roller 110 and the bottom of the receiving cavity 106, and the extension direction of the threaded hole 111 is perpendicular to the axis of the insulating rod 1. A screw 112 is internally threaded into the threaded hole 111. A frustum-shaped cylinder 113 coaxial with the rod body is welded to the free end of the screw 112. The diameter of the cylinder 113 gradually decreases in the direction away from the screw 112, and the length of the cylinder 113 is smaller than the inner diameter of the receiving cavity 106. It should be particularly emphasized that the side of the cylinder 113 is in contact with the roller 110.

[0029] In use, first adjust the distance between the limiting ring 104 and the bottom surface of the insulating rod 1 according to the thickness of the icing cable. At this time, the pressing surface of the lifting rod 107 is flush with the bottom surface of the insulating rod 1 or the pressing surface of the lifting rod 107 is located in the receiving cavity 106. Then, the icing cable enters the pressing space between the limiting ring 104 and the insulating rod 1. Finally, screw in the screw-in screw 112. During this process, the column 113 pushes the lifting rod 107 to rise, so that the main rod 108 of the lifting rod presses the icing cable, breaks the ice layer covering the outside of the cable, and achieves the conditions for voltage detection and grounding.

[0030] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A voltage testing grounding rod with ice-breaking function, characterized in that, It includes an insulating rod and a clamp at the top of the insulating rod. The clamp is equipped with a grounding wire. The electroscope is electrically connected to the clamp and is placed inside the insulating rod. The insulating rod is also equipped with an ice-breaking device that does not interfere with the electroscope. The ice-breaking device includes a limiting ring at the bottom of the insulating rod. The distance between the limiting ring and the bottom surface of the insulating rod can be adjusted according to the size of the icing cable. The insulating rod is equipped with a lifting rod. The lifting rod squeezes the icing cable between the limiting ring and the bottom surface of the insulating rod to break the ice layer.

2. The grounding rod with ice-breaking function according to claim 1, characterized in that, A fixing ring is fitted on the outer surface of the bottom end of the insulating rod. The bottom surface of the fixing ring coincides with the bottom surface of the insulating rod. A slot is opened on the bottom surface of the fixing ring along the height direction. A telescopic block is provided in the slot and is slidably connected to the slot. The length of the telescopic block is greater than the depth of the slot. A limiting ring is provided at the end of the telescopic block away from the fixing ring.

3. The voltage testing grounding rod with ice-breaking function according to claim 2, characterized in that, Multiple threaded holes are opened along the height direction on the outer wall of the slot. A clamping screw is connected to the threaded hole. By screwing in the clamping screw, the telescopic block can be clamped and fixed, thereby adjusting the distance between the limit ring and the bottom surface of the insulating rod.

4. The voltage testing grounding rod with ice-breaking function according to claim 3, characterized in that, An axial cavity is formed inside the insulating rod, and a gap is left between the cavity and the electroscope to ensure that the ice-breaking device and the electroscope do not interfere with each other. A lifting rod is slidably connected inside the cavity. The length of the lifting rod is less than the depth of the cavity. The lifting rod includes a main lifting rod and a coaxial secondary lifting rod at the end of the main lifting rod facing the clamp. The diameter of the secondary lifting rod is smaller than the diameter of the main lifting rod.

5. The voltage testing grounding rod with ice-breaking function according to claim 4, characterized in that, A roller is provided on the free end of the auxiliary lifting rod away from the main lifting rod. A single threaded hole is opened on the side wall at the bottom of the receiving cavity. The threaded hole is located between the roller and the bottom of the receiving cavity. A screw is threaded into the threaded hole. A frustum-shaped cylinder is provided on the free end of the screw shaft, which is coaxial with the shaft. The diameter of the cylinder gradually decreases in the direction away from the screw, and the length of the cylinder is smaller than the inner diameter of the receiving cavity. The side of the cylinder is in contact with the roller.

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