A grounding down conductor switching device for power transmission towers that does not require secondary drilling.

Abstract

This utility model relates to the field of grounding resistance detection technology for transmission line towers, and proposes a grounding down conductor switching device for transmission towers that does not require secondary drilling. The device includes a fixed base and an operating handle. The fixed base consists of an insulating base, a rear connecting terminal, a front connecting terminal, a connecting slider, a safety baffle, and a fixing clamp. The insulating base has two guide grooves, in which the rear and front connecting terminals are installed. The right side of both the rear and front connecting terminals has a sliding groove, allowing the connecting slider to reciprocate within the guide groove and engage with it. The safety baffle is mounted on the right side of the insulating base via the fixing clamp, and its right end has a shaped locking hole. The operating handle includes a connecting rod, a locking release head, a slider operating head, and a grip handle. The locking release head corresponds to the shaped locking hole on the safety baffle, and the slider operating head corresponds to the operating interface of the connecting slider. The operating handle allows for the opening and closing of the safety baffle and the removal and insertion of the connecting slider.

Description

Technical Field

[0001] This utility model relates to the field of grounding resistance detection technology for transmission line towers, and in particular to a grounding down conductor switching device for transmission towers that does not require secondary drilling. Background Technology

[0002] Regular testing of the grounding resistance of transmission line towers is a crucial step in ensuring the safe operation of the power grid. Currently, this testing requires disconnecting the grounding down conductor from the tower body (the grounding down conductor is bolted to the tower body before testing; during measurement, only one grounding wire should remain connected to the tower body, while the others should be disconnected). This operation commonly relies on the traditional method of removing the connecting bolts. Due to the harsh outdoor environment of the towers, the connecting bolts are often severely corroded, making disassembly extremely difficult. Furthermore, the grounding down conductor is prone to violent rebound due to stress release during disassembly, posing a serious safety threat to operators. After testing, reinstallation often results in misalignment of the mounting holes due to deformation or displacement of the grounding down conductor, making repositioning time-consuming and labor-intensive. The entire disassembly, assembly, and testing process typically takes more than three hours and requires multiple people, leading to low efficiency and high maintenance costs.

[0003] Therefore, it is necessary to provide a grounding down conductor switching device for transmission towers that does not require secondary drilling to solve the problems existing in the prior art. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a grounding down conductor switching device for transmission towers that does not require secondary drilling, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A grounding down conductor switching device for transmission towers that does not require secondary drilling is provided, comprising: a fixed base and an operating handle installed between the tower body and the grounding down conductor; The fixed base includes an insulating base, a rear connection terminal connected to the tower body, a front connection terminal connected to the grounding lead, a connecting slider, and a safety baffle. The insulating base is an integral block structure. Two through-type T-shaped guide grooves are provided on the right side of the insulating base along the left and right directions. The two T-shaped guide grooves are independent and not connected. Both the rear and front connecting terminals are bosses, installed in the two T-shaped guide grooves respectively. The boss end faces of the rear and front connecting terminals extend from the front and rear sides of the insulating base, respectively. Fixing holes are provided on the boss end faces. Sliding grooves are provided on the right side of the rear and front connecting terminals. The connecting slider is slidably installed in the sliding grooves, and an operating interface is provided on the right side of the connecting slider. The fixing clamp is installed on the outer side of the right side of the insulating base. A spiral through hole is provided in the middle of the fixing clamp, and a safety baffle is fitted inside the spiral through hole. The left end face of the safety baffle abuts against the right end face of the connecting slider, and a special-shaped locking hole is provided on the right end of the safety baffle. The operating handle includes: a connecting rod, a locking release head disposed at one end of the connecting rod, and a slider operating head disposed at the other end of the connecting rod; the end shape of the locking release head corresponds to the irregular lock hole of the safety baffle; the end shape of the slider operating head corresponds to the operating interface connected to the slider.

[0006] Preferably, the upper and lower sides of the T-shaped guide groove are respectively provided with threaded connection holes; the fixing clamp is fixed to the outer side of the right side of the insulating base by anti-theft bolts through the threaded connection holes; an insulating washer is provided between the fixing clamp and the right side of the insulating base.

[0007] Preferably, the tower body is in contact with the boss end face of the rear connection terminal by fastening bolts.

[0008] Preferably, the front connecting terminal boss end face is in contact with the rear end face of the grounding lead through a fastening bolt.

[0009] Preferably, the irregularly shaped keyhole at the right end of the safety baffle is a polygonal hole with unequal side lengths; the locking release head is an irregularly shaped protruding key that matches the shape of the irregularly shaped keyhole.

[0010] Preferably, the bolt head of the anti-theft bolt has an irregular outer contour, which is a polygon with unequal side lengths.

[0011] Preferably, the operating interface on the right side of the connecting slider is a threaded hole; the slider operating head is a screw corresponding to the threaded hole.

[0012] Preferably, the outer surface of the connecting slider is provided with a silver plating layer.

[0013] This utility model discloses a grounding down conductor switching device for transmission towers that does not require secondary drilling, which has the following beneficial effects.

[0014] This utility model includes a fixed base and an operating handle. The fixed base is installed between the tower body and the grounding down conductor. The fixed base consists of an integral insulating base, a grounding down conductor, a rear connecting terminal, a front connecting terminal, a connecting slider, a safety baffle, and a fixing clamp. The right side of the insulating base has two independent T-shaped guide grooves. The rear and front connecting terminals are respectively installed in the guide grooves, with their protruding end faces extending from the front and rear sides of the insulating base and having fixing holes. The right side of the rear and front connecting terminals has sliding grooves, allowing the connecting slider to reciprocate within the guide grooves and engage with them. The safety baffle is located on the right side of the insulating base via the fixing clamp, and its right end has a shaped locking hole to prevent unauthorized disassembly.

[0015] The operating handle includes a connecting rod, a locking release head, and a slider operating head. The locking release head corresponds to the irregularly shaped lock hole of the safety baffle, and the slider operating head corresponds to the operating interface of the connecting slider. The operating handle allows for the opening and closing of the safety baffle and the removal and insertion of the connecting slider. The device connects to the tower body via the rear connection terminal and to the grounding down conductor via the front connection terminal, eliminating the need for secondary drilling on the tower during installation. This structure enables rapid switching of the grounding down conductor, facilitates grounding resistance detection, and enhances on-site safety and reliability through features such as anti-theft bolts and irregularly shaped lock holes.

[0016] This device can completely solve the prominent problems of long operation time, difficult operation, and high personnel safety risks in traditional grounding inspection. It not only improves inspection efficiency, but also fundamentally eliminates safety hazards such as injury caused by grounding wire rebound. At the same time, the device has a reasonable structural design, reliable electrical connection, and anti-misoperation and anti-theft functions, significantly reducing operation and maintenance costs and safety risks, and has outstanding practical value and prospects for promotion. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the grounding down conductor switching device for transmission towers that does not require secondary drilling, according to this utility model.

[0018] Figure 2 This is an exploded view of the power transmission tower of this utility model, which eliminates the need for secondary drilling to install the grounding down conductor switching device.

[0019] Figure 3 Another exploded view of the transmission tower of this utility model, which does not require secondary drilling to install the grounding down conductor switching device.

[0020] Figure 4 This is a schematic diagram of the operating handle structure of this utility model.

[0021] Figure 5 This is a schematic diagram of the fixed base structure of this utility model.

[0022] Figure 6This is a schematic diagram showing the connection slider and the operating handle of this utility model.

[0023] Figure 7 This is a schematic diagram showing the cooperation between the safety baffle and the operating handle of this utility model.

[0024] In the attached image: 100. Fixed base; 101. Fixed clamp; 102. Safety baffle; 103. Connecting slider; 104. Connecting terminal group; 105. Anti-theft bolt; 106. Insulating washer; 107. Grounding lead; 108. Insulating base; 109. Fastening bolt; 200. Operating handle; 201. Lock release head; 202. Slider operating head; 203. Grip handle; 204. Connecting rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Example 1 Please refer to Figures 1 to 3 A grounding down conductor switching device for transmission towers that does not require secondary drilling includes: a fixed base 100 and an operating handle 200 fixedly installed between the tower body and the grounding down conductor 107; The fixed base 100 includes an insulating base 108, a rear connection terminal connected to the tower body, a front connection terminal connected to the grounding lead 107, a connecting slider 103, and a safety baffle 102. like Figure 2As shown, the connection terminal group 104 includes a rear connection terminal and a front connection terminal. The insulating base 108 is an integral block structure. Two through-type T-shaped guide grooves are provided on the right side of the insulating base 108 along the left and right directions. The two T-shaped guide grooves are independent of each other and are not connected. Both the rear connection terminal and the front connection terminal are bosses. The rear connection terminal and the front connection terminal are respectively installed in the two T-guide grooves. The boss end faces of the rear connection terminal and the front connection terminal extend out of the front side and the rear side of the insulating base 108, respectively. The boss end faces are provided with fixing holes. The right side of the rear connection terminal and the front connection terminal are provided with sliding grooves. The connecting slider 103 is slidably installed in the sliding grooves. The right side of the connecting slider 103 is provided with an operation interface. The fixing clamp 101 is installed on the outside of the right side of the insulating base 108. The fixing clamp 101 is provided with a spiral through hole in the middle. The safety baffle 102 is sleeved in the spiral through hole. The left end face of the safety baffle 102 abuts against the right end face of the connecting slider 103. The right end of the safety baffle 102 is provided with an irregularly shaped locking hole. Both the rear and front connection terminals are made of copper alloy material; the rear and front connection terminals are connected to the tower body and the grounding down conductor 107 respectively by fastening bolts 109; the fastening bolts 109 are made of stainless steel and have excellent corrosion resistance.

[0028] It should be noted that the connecting slider 103 is made of copper alloy. The connecting slider 103 can slide back and forth along the slide groove to achieve contact or separation between the rear connecting terminal and the front connecting terminal, thereby realizing reliable connection and disconnection of the circuit.

[0029] like Figure 4 As shown, the operating handle 200 includes: a connecting rod 204, a locking release head 201 disposed at one end of the connecting rod 204, and a slider operating head 202 disposed at the other end of the connecting rod 204; the end shape of the locking release head 201 corresponds to the irregularly shaped lock hole of the safety baffle 102; the end shape of the slider operating head 202 corresponds to the operating interface of the connecting slider 103. The connecting rod 204 is also provided with a horizontal grip handle 203, which adopts a double-layer structure design, with the inner layer being precision cast from high-strength alloy steel and the outer layer covered with anti-slip rubber. The connecting rod 204 is precision cast from high-strength alloy steel.

[0030] The locking release head 201 is made of high-strength alloy steel precision casting. By rotating it clockwise or counterclockwise, the safety baffle 102 can be opened and locked smoothly.

[0031] The safety baffle 102 is made of fiberglass insulation material. When it is necessary to connect the circuit, the safety baffle 102 can provide stable support for the connecting slider 103 to ensure the stability of the circuit connection. The irregularly shaped lock hole on the right side of the safety baffle 102 can prevent external personnel from operating the device and avoid equipment damage or safety accidents caused by accidental operation.

[0032] When it is necessary to disconnect the circuit, rotate the safety baffle 102 by locking release head 201 until the safety baffle 102 is completely disengaged from the fixed clamp 101. At this time, use slider manipulation head 202 to screw into the right side of connecting slider 103 and pull out connecting slider 103 to disconnect the circuit.

[0033] Preferably, in this embodiment, threaded connection holes are provided on the upper and lower sides of the T-shaped guide groove; the fixing clamp 101 is fixed to the outer side of the right side of the insulating base 108 by anti-theft bolts 105 through the threaded connection holes. An insulating washer 106 is provided between the fixing clamp 101 and the right side of the insulating base 108. The insulating washer 106 is made of rubber material and is used for waterproofing; the insulating base 108 is made of glass fiber insulating material.

[0034] Preferably, in this embodiment, the tower body is in contact with the boss end face of the rear connection terminal by fastening bolt 109.

[0035] Preferably, in this embodiment, the front connection terminal boss face is in contact with the rear end face of the grounding lead 107 via a fastening bolt 109. The grounding lead 107 is made of high-quality electrolytic copper.

[0036] Preferably, in this embodiment, the irregular keyhole at the right end of the safety baffle 102 is a polygonal hole with unequal side lengths; the locking release head 201 is an irregular protruding key that matches the shape of the irregular keyhole.

[0037] Preferably, in this embodiment, the bolt head of the anti-theft bolt 105 has an irregular outer contour, which is a polygon with unequal side lengths, thereby improving the security of the device.

[0038] Preferably, in this embodiment, the operating interface on the right side of the connecting slider 103 is a threaded hole; the slider operating head 202 is a screw corresponding to the threaded hole.

[0039] Preferably, in this embodiment, the outer surface of the connecting slider 103 is provided with a silver plating layer.

[0040] Example 2 Based on Example 1, such as Figures 5 to 7As shown, during the assembly of the fixed base 100, the insulating base 108 is first placed horizontally, and the rear connecting terminal, front connecting terminal, and insulating washer 106 are installed in sequence. Then, the fixing clamp 101 is used to press it tight, and finally, the anti-theft bolt 105 and fastening bolt 109 are used to fix it, completing the pre-assembly of the fixed base 100. During the installation and commissioning of the grounding down conductor 107, the grounding down conductor 107 is accurately installed at the designated position on the insulating base 108. Then, the slider control head 202 of the operating handle 200 is used to install the connecting slider 103 into the slide groove. The push-pull test is used to ensure smooth sliding and reliable contact. During on-site installation and fixing, the assembled fixed base 100 is reliably connected to the tower body through the rear connecting terminal of the connecting terminal group 104, and the front connecting terminal is reliably connected to the grounding down conductor. It is then fastened with the fastening bolt 109. On the tower; when installing the safety baffle 102, align the safety baffle 102 with the installation position of the insulating base 108, and use the locking release head 201 of the operating handle 200 to engage with the special lock hole of the safety baffle 102 to rotate and fix the safety baffle 102; during the grounding disconnection operation, first use the locking release head 201 of the operating handle 200 to open the safety baffle 102, then replace the slider operating head 202 and insert it into the operating interface of the connecting slider 103, and smoothly pull the operating handle 200 outward to separate the connecting slider 103 from the rear connecting terminal and the front connecting terminal, thus reliably disconnecting the grounding circuit; during the grounding restoration operation, after the grounding resistance test is completed, use the slider operating head 202 to smoothly push the operating handle 200 inward to reliably re-engage the connecting slider 103 with the grounding lead 107, restoring the conduction of the grounding circuit. Finally, use the locking release head 201 to restore the safety baffle 102 to the locked state.

[0041] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Substitutions may include replacements for some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the scope of protection of this utility model.

Claims

1. A grounding down conductor switching device for transmission towers that does not require secondary drilling for installation, characterized in that, include: A fixed base and operating handle installed between the tower body and the grounding down conductor; The fixed base includes an insulating base, a rear connection terminal connected to the tower body, a front connection terminal connected to the grounding lead, a connecting slider, a safety baffle, and a fixing clamp. The insulating base is an integral block structure. Two through-type T-shaped guide grooves are provided on the right side of the insulating base along the left and right directions. The two T-shaped guide grooves are independent and not connected. Both the rear and front connecting terminals are bosses, installed in the two T-shaped guide grooves respectively. The boss end faces of the rear and front connecting terminals extend from the front and rear sides of the insulating base, respectively. Fixing holes are provided on the boss end faces. Sliding grooves are provided on the right side of the rear and front connecting terminals. The connecting slider is slidably installed in the sliding grooves, and an operating interface is provided on the right side of the connecting slider. The fixing clamp is installed on the outer side of the right side of the insulating base. A spiral through hole is provided in the middle of the fixing clamp, and a safety baffle is fitted inside the spiral through hole. The left end face of the safety baffle abuts against the right end face of the connecting slider, and a special-shaped locking hole is provided on the right end of the safety baffle. The operating handle includes: a connecting rod, a locking release head disposed at one end of the connecting rod, and a slider operating head disposed at the other end of the connecting rod; the end shape of the locking release head corresponds to the irregular lock hole of the safety baffle; the end shape of the slider operating head corresponds to the operating interface connected to the slider.

2. The grounding down conductor switching device for transmission towers without secondary drilling as described in claim 1, characterized in that, The upper and lower sides of the T-shaped guide groove are respectively provided with threaded connection holes; the fixing clamp is fixed to the outer side of the right side of the insulating base by anti-theft bolts through the threaded connection holes; an insulating washer is provided between the fixing clamp and the right side of the insulating base.

3. The transmission tower as described in claim 1, which eliminates the need for secondary drilling to install the grounding down conductor switching device, is characterized in that... The tower body is in contact with the boss end face of the rear connection terminal through fastening bolts.

4. The transmission tower as described in claim 1, which eliminates the need for secondary drilling to install the grounding down conductor switching device, is characterized in that... The front connecting terminal boss end face is in contact with the rear end face of the grounding lead wire through a fastening bolt.

5. The transmission tower as described in claim 1, which eliminates the need for secondary drilling to install the grounding down conductor switching device, is characterized in that... The irregularly shaped keyhole on the right end of the safety baffle is a polygonal hole with unequal side lengths; the locking release head is an irregularly shaped protruding key that matches the shape of the irregularly shaped keyhole.

6. The transmission tower as described in claim 2, which eliminates the need for secondary drilling to install the grounding down conductor switching device, is characterized in that... The bolt head of the anti-theft bolt has an irregular outer contour, which is a polygon with different side lengths.

7. The transmission tower as described in claim 1, which eliminates the need for secondary drilling to install the grounding down conductor switching device, is characterized in that... The operating interface on the right side of the connecting slider is a threaded hole; the slider operating head is a screw corresponding to the threaded hole.

8. The transmission tower as described in claim 1, which eliminates the need for secondary drilling to install the grounding down conductor switching device, is characterized in that... The outer surface of the connecting slider is plated with silver.

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