Charged installation 10kv grounding fitting

Abstract

This utility model discloses a 10kV grounding fitting that can be installed while energized, belonging to the field of power maintenance technology. It includes a grounding fitting and an installation device for fixing the grounding fitting to a cable. The grounding fitting includes a fixing device, a sliding device, and a locking device. The fixing device includes a first fixing ring and a second fixing ring. The sliding device is located outside the first fixing ring and can slide outside it. One end of the sliding device near the second fixing ring can enter a connecting ring. One end of the locking device is fixed to the outside of the sliding device near the second fixing ring by a hinge, and the locking device also includes a spring. This utility model incorporates a screw and a guide rod in the installation tool. The guide rod controls the movement of the pressure blocks, and the screw adjusts the distance between the pressure blocks. The installation tool can fix the grounding fitting to the cable, and installation can be performed while the cable is energized.

Description

Technical Field

[0001] This utility model relates to a 10kV grounding hardware that can be installed under energized conditions, belonging to the field of power maintenance technology. Background Technology

[0002] Currently, most commonly used high and low voltage grounding devices can only be installed after the line is de-energized, and some grounding devices lack complete ground wire protection measures during the installation process. Traditional live-installed grounding rings often use piercing metal rings, relying on the contact between the spikes and the conductor surface for conductivity. The contact area is difficult to determine with the naked eye, posing a risk of insufficient contact and unreliable grounding protection. Furthermore, the grounding ring itself often lacks specialized installation tools, requiring manual or simple clamping operation, which is inefficient and susceptible to environmental factors (rain, fog, wind, foreign objects), creating safety risks. Existing grounding ring sheath materials are prone to aging and cannot be repeatedly opened, requiring manual opening of the sheath for voltage testing, increasing the risk of electric shock and causing numerous inconveniences on-site.

[0003] In existing technologies, multiple grounding wires need to be connected during maintenance or emergency repairs of 10 kV and below lines. Traditional power outage connection methods are time-consuming and seriously affect power supply reliability. The piercing grounding ring has a small contact area, and the exposed parts are easily corroded by rain and snow and rust. Under wind force, conductor vibration may cause the piercing ring to loosen or fall off, or even cause phase-to-phase or phase-to-ground short circuits. There is no dedicated insulated operating structure, and some ring bodies cannot be opened and closed quickly. Construction personnel need to manually contact the device, which poses a risk of electric shock. After long-term aging, the sheath and buckle structure are prone to jamming or loss of seal, and the waterproof rating and aging resistance performance cannot meet the complex outdoor climate conditions.

[0004] Therefore, it is necessary to design a 10kV grounding fitting that can be installed under energized conditions, which solves the problems of low installation efficiency, unreliable contact, high operational risk, and poor environmental adaptability of traditional grounding equipment. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a 10kV grounding hardware that can be installed under live conditions, which solves the problems of low installation efficiency, unreliable contact, high operational risk and poor environmental adaptability of traditional grounding equipment.

[0006] The technical problem to be solved by this utility model is achieved by the following technical solution: a 10kV grounding fitting that can be installed energized, comprising...

[0007] Grounding hardware

[0008] The grounding fitting also includes an installation device for fixing the grounding fitting to the cable, and the grounding fitting can be installed even when the cable is energized.

[0009] The grounding hardware includes a fixing device, a sliding device, and a locking device. The fixing device can be installed on the outside of the cable and includes a first fixing ring and a second fixing ring. The sliding device is installed on the outside of the first fixing ring and can slide on the outside of the first fixing ring. The surface of the second fixing ring is provided with a connecting ring that cooperates with the sliding device. The end of the sliding device near the second fixing ring can enter the connecting ring.

[0010] The surface of the connecting ring is provided with a protrusion that cooperates with the locking device. One end of the locking device is fixed to the outer side of the sliding device near the second fixed ring by a hinge. The locking device is also provided with a spring.

[0011] Preferably, the installation device includes pressure blocks, screws, and guide rods. There are two pressure blocks, the screws can control the distance between the pressure blocks, and the guide rods can limit the movement range of the pressure blocks.

[0012] Preferably, the pressing block is E-shaped.

[0013] Preferably, the pressure block is provided with a connecting hole, and two fixing holes are symmetrically arranged on the side of the hole of one pressure block. The top of the screw is provided with a recess, and the screw can enter the connecting hole. The fixing pin is disposed in the fixing hole and cooperates with the recess, and the screw can rotate in the connecting hole. The connecting hole of the other pressure block is provided with a thread, and rotating the screw can control the position of the other pressure block on the screw. The pressure block is provided with a fixing groove, and the guide rod is fixed in the fixing groove of one pressure block and passes through the fixing groove of the other pressure block.

[0014] Preferably, there are two of each of the first fixing ring, the second fixing ring, and the sliding device. The first fixing ring, the second fixing ring, and the sliding device are all semi-circular cylindrical in shape and are connected by snap fasteners.

[0015] Preferably, a groove is provided on the outer side of the fixing ring, and a slide rail is provided on the inner side of the sliding device, wherein the groove can cooperate with the slide rail for sliding connection.

[0016] Preferably, a locking device is provided on the outside of one of the sliding devices. The locking device includes a bracket and a locking block. The bottom of the bracket and the locking block are connected by a hinge. A spring is also provided between the bracket and the locking block. The locking block extends to one side and has a buckle at its top.

[0017] Preferably, a connecting block is provided on the outer side of the fixing ring and the sliding device.

[0018] Preferably, the connecting block can cooperate with the mounting device.

[0019] The beneficial effects of this utility model are:

[0020] This invention incorporates a screw and a guide rod in the installation tool. The guide rod controls the movement of the pressure blocks, while the screw adjusts the distance between them. The installation tool can secure the grounding hardware to the cable, and installation can be performed while the cable is energized. The screw extends the operator's installation distance, facilitating installation, improving efficiency, and reducing risks during the installation process.

[0021] The device features two sliding and fixing devices connected by snap-fit ​​joints, enabling rapid installation and ensuring stability after installation. After installation, the grounding hardware can be reused without reinstallation, reducing installation steps and improving efficiency. The sliding device includes a locking mechanism that works with the fixing device to restrict the sliding motion. The locking mechanism is spring-loaded and can be released when the sliding device is engaged. Controlling the sliding device allows for the control of the exposure or protection of the cable grounding portion. The installation device includes a pressure block, screw, and guide rod, enabling large-area coverage of the grounding hardware. The threaded clamping allows for adjustment of clamping force and contact area. The guide rod prevents tilting and ensures uniform force during clamping. Compared to traditional piercing grounding rings, this grounding hardware has a smaller contact area, is less prone to loosening, and offers more stable grounding reliability. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the oblique explosion of this utility model.

[0024] Figure 3 This is a frontal explosion diagram of the present invention.

[0025] Figure 4 This is a schematic diagram of the locking device structure of this utility model.

[0026] Figure 5 This is a schematic diagram of the installation device and its internal structure of the present invention.

[0027] In the diagram: 1-installation device, 11-pressure block, 111-fixing hole, 112-fixing groove, 12-screw, 121-recess, 13-guide rod, 2-fixing device, 21-fixing ring one, 211-slide groove, 22-fixing ring two, 3-sliding device, 31-slide rail, 4-locking device, 41-bracket, 42-locking block, 43-hinge, 44-spring. Detailed Implementation

[0028] In order to make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments. Example 1

[0029] like Figures 1-5 As shown, a 10kV grounding fitting that can be installed while energized includes a grounding fitting and an installation device 1. The installation device 1 can fix the grounding fitting to the cable, and the grounding fitting can also be installed when the cable is energized.

[0030] The grounding fitting includes a fixing device 2, a sliding device 3, and a locking device 4. The fixing device 1 is located on the outside of the cable and includes a fixing ring 1 21 and a fixing ring 22. The sliding device 3 is located on the outside of the fixing ring 1 21 and can slide on the outside of the fixing ring 1 21. The surface of the fixing ring 22 is provided with a connecting ring that cooperates with the sliding device 3. The end of the sliding device 3 near the fixing ring 22 can be inserted into the connecting ring.

[0031] In this embodiment, refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 The installation device includes pressure blocks 11, screws 12, and guide rods 13. There are two pressure blocks 11, the screws 12 can control the distance between the two pressure blocks 11, and the guide rods 13 can limit the movement range of the pressure blocks 11.

[0032] There are two pressure blocks 11, which are E-shaped in shape and are arranged vertically between each other. Both pressure blocks 11 are provided with connecting holes and fixing grooves 112. The connecting holes can be used with bolts 12, and the fixing grooves 112 can be used with guide rods 13.

[0033] The upper pressure block 11 has two fixing holes 111 on its side, which are symmetrically arranged on the side of the connecting hole. The fixing holes 111 can accommodate fixing pins. After the fixing pins pass through the fixing holes 111, they can cooperate with the screw 12.

[0034] The screw 12 is a cylindrical rod with threads on its surface. There are no threads on the top surface of the thread 12. A recess 121 is located at the top of the thread 12, and the diameter of the recess 121 is smaller than the diameter of the rod. The recess 121 can mate with a retaining pin.

[0035] After the top of the screw 12 can extend into the connecting hole of the upper pressure block 11, the fixing pin is set in the fixing hole 111. At this time, the screw 12 is restricted by the fixing pin and can only rotate within the connecting hole. During the rotation, the horizontal position of the screw 12 and the pressure block 11 will not change. The middle part of the screw 12 can extend into the connecting hole of the lower pressure block 11. The connecting hole of the lower pressure block 11 is provided with threads, and the position of the lower pressure block 11 on the screw 12 can be controlled by rotation.

[0036] An extension rod is provided at the bottom of the screw 12, which can extend the distance of the screw 12. The extension rod is connected to the screw 12 by bolts. The operator can control the screw through the extension rod, increasing the distance between the operator and the cable.

[0037] In this embodiment, each of the connecting holes of the two pressure blocks 11 is provided with a fixing groove 112. The fixing groove 112 can accommodate the guide rod 13, and the shape of the fixing groove 112 is consistent with the cross-sectional shape of the guide rod 13. The pressure block 11 can slide on the surface of the guide rod 13. In this embodiment, the fixing groove 112 is square in shape, the guide rod 13 is cuboid in structure, and the bottom of the guide rod 13 is conical. The guide rod 13 is fixed in the fixing groove 112 of the upper pressure block 11 by welding, and the lower pressure block 11 can move along the guide rod 13. During the movement, the fixing groove 112 of the lower pressure block 11 can slide on the surface of the guide rod 13.

[0038] After the mounting device 1 is assembled, the position of the lower pressure block 11 on the screw 1 can be controlled by rotating the screw 12, so that the lower pressure block 11 is closer to or farther away from the upper pressure block 11.

[0039] After the two pressure blocks 11 are attached together, a ring is formed in the middle that can accommodate the grounding hardware. A groove is provided at the attachment point between the E-type pressure block and the grounding hardware. The connecting block can be placed in the groove of the pressure block 11 of the mounting device 1, and the groove can cooperate with the connecting block on the outside of the grounding hardware.

[0040] Grounding hardware includes a fixing device 2, a sliding device 3, and a locking device 4, as shown in the reference. Figure 1-4The fixing device 2 includes a first fixing ring 21 and a second fixing ring 22. In this embodiment, both the first fixing ring 21 and the second fixing ring 22 are symmetrically constructed semi-cylindrical, with a semi-cylindrical surface on the inner side that fits against the surface of the cable. Multiple protrusions are provided on the side of the first fixing ring 21 and the second fixing ring 22 closest to the cable. These protrusions increase the pressure between the first fixing ring 21 and the second fixing ring 22 and the cable, ensuring that there is no misalignment between them. In this embodiment, when the first fixing ring 21 and the second fixing ring 22 are installed with the cable, rubber blocks are provided on the contact surfaces between them. These rubber blocks increase the sealing effect between the first fixing ring 21 and the second fixing ring 22 and the cable, preventing moisture or dust from entering the grounding hardware through the gaps between them and the cable, thus avoiding a short circuit.

[0041] Two fixing rings 21 and 22 are connected by snap fasteners on their surfaces. These snap fasteners allow for quick and easy locking of the fixing rings 21 and 22 onto the cable. Multiple pairs of straight grooves 211 of equal length are formed along the circumference of the outer semi-cylindrical surface of fixing ring 21. These grooves 211 engage with a sliding device 3, allowing the sliding device 3 to slide on the surface of fixing ring 21. A connecting ring is located on the side of fixing ring 22 closest to fixing ring 21, extending towards fixing ring 21 and spaced a certain distance from the cable, without contacting it. The sliding device 3 is located on the outer side of fixing ring 21 and can slide on it. When the sliding device 3 slides to the side closest to fixing ring 22, it is positioned within the gap between fixing ring 22 and the cable.

[0042] The fixing device 2 can wrap the cable with two half-rings, fixing ring 21 and fixing ring 22, to provide support for the sliding device 3. The connecting block of fixing ring 22 can cooperate with the sliding device 3 to achieve grounding of the internal cable.

[0043] In this embodiment, the cable insulation layer between the first fixing ring 21 and the second fixing ring 22 is stripped. When the sliding device 3 slides to the side close to the second fixing ring 22, the exposed cable is protected by the grounding hardware and the cable is not connected to the outside. When the sliding device 3 slides to the side away from the second fixing ring 22, the bare cable can be exposed, and the cable can be grounded by connecting to the conductor.

[0044] In this embodiment, the sliding device 3 is semi-cylindrical in shape, and two sliding devices 3 are provided. The sliding device 3 can be located on the outside of the fixing ring 21. A slide rail 31 is provided on the inside of the sliding device 3. The slide rail 31 can cooperate with the slide groove 211 of the fixing ring 21, so that the sliding device 3 can slide on the surface of the fixing ring 21. When the sliding device 3 slides to the end away from the fixing ring 22, the exposed cable can be completely exposed. When the sliding device 3 slides to the end that fits the fixing ring 22 and is located on the inside of the fixing ring 22, the exposed cable can be placed inside the sliding device 3, and both ends are sealed by the fixing device 2.

[0045] In this embodiment, a locking device 4 is provided on the side of the sliding device 3 at the bottom near the second fixing ring 21. The locking device 4 includes a bracket 41 and a locking block 42. The bottom of the bracket 41 is fixed to the sliding device 3 by welding. A hinge is provided on the bracket 41, which connects the bracket 41 and the locking block 42. The locking block 42 extends towards the second fixing ring 21. A buckle is provided on the top of the locking block 42. A protrusion is provided on the second fixing ring 22, which can cooperate with the protrusion at the top of the locking block 42 to lock the sliding device 3 and prevent the locking device 3 from moving. A spring 44 is provided at the bottom of the bracket 41 and the locking block 42. The spring 44 provides elastic force to ensure that the locking block 42 can lock the sliding device 3 autonomously without external force. A handle is provided at the bottom of the locking block 42. By controlling the handle, the connection between the locking block 42 and the second fixing ring 22 can be contacted, allowing the sliding device 3 to slide on the surface of the first fixing ring.

[0046] The locking device 4 can fix the sliding device 3 in a self-locking manner inside the fixing ring 22 after sliding, preventing the sliding device 3 from retracting or loosening due to vibration or external force. The spring 44 provides preload to ensure that the locking block 42 can automatically engage.

[0047] In this embodiment, the sliding device 3 is located between the fixing device 2 and the sliding device 3. The sliding device 3 is arranged on the outside of the fixing ring 21 via the slide rail 31. The end of the sliding device 3 near the fixing ring 22 can be fitted into the connecting ring of the fixing ring 22.

[0048] A locking device 4 is provided on the side of the sliding device 3 near the fixed ring 22. The locking block 42 of the locking device 4 is mounted on the bracket 41 via a hinge 43. A spring 44 is provided between the bracket 41 and the locking block 44. The spring 44 can provide elastic force so that the top buckle of the locking block 44 can cooperate with the protrusion provided on the fixed ring 22 to achieve locking.

[0049] The pressure block 11 can be set on the outside of the fixing ring 22 and the sliding device 3. By tightening the screw 12, the pressure block 11 clamps the gap between the fixing ring 22 and the cable, and can reduce the gap between the sliding device 3 and the cable. The groove on the pressure block 11 and the connecting block set on the outside of the fixing ring 22 and the sliding device 3 can ensure that the cable will not loosen due to slight vibration during installation.

[0050] In this embodiment, the groove on the pressure block 11 is provided with screw holes on its side, and the connecting block is provided with screw holes on its side, so that the grounding hardware can be fixed to the installation device 1 with bolts when installing the grounding hardware.

[0051] The specific installation steps in this embodiment are as follows:

[0052] Install the lower pressure block 11 onto the threaded part of the screw 12 through the connecting hole. Place the upper pressure block 11 connecting block on the top of the screw 12. Place the fixing pin in the fixing hole of the upper pressure block 11, with the top recess 121 of the screw 12 engaging with the fixing pin. Weld the guide rod 13 into the fixing groove of the upper pressure block 11, and rotate the screw 12 to fix the fixing groove of the lower pressure block 11 onto the surface of the guide rod 13. At this point, rotating the screw 12 allows control to move the lower pressure block 11 closer to or further away from the upper pressure block 11.

[0053] Assemble the locking device 4, and place the sliding device 3 equipped with the locking device 4 on the lower pressure block 11. A second fixing ring 22 is provided on the other side of the lower pressure block 11. The groove of the pressure block 11 is fixed to the connecting block by bolts. A first fixing ring 21 is provided inside the sliding device 3. The first fixing ring 21 is connected to the sliding device 3 and the slide rail 31 via a slide groove 211. A rubber block is installed inside the first fixing ring 21.

[0054] A sliding device 3 without a locking device 4 is mounted on the upper pressure block 11. A second fixing ring 22 is mounted on the other side of the upper pressure block 11. The groove of the pressure block 11 is fixed to the connecting block by bolts. A first fixing ring 21 is mounted on the inner side of the sliding device 3. The first fixing ring 21 is connected to the sliding device 3 and the slide rail 31 through a slide groove 211. A rubber block is installed on the inner side of the first fixing ring 21. The first fixing ring 21 is located on the side away from the second fixing ring 22.

[0055] Remove the insulation layer of the cable that needs to be grounded to expose the inner conductor layer. Extend the bottom of the control screw 12 to position the exposed portion between the first fixing ring 21 and the second fixing ring 22. Rotate the extension rod to fix the first fixing ring 21, the second fixing ring 22, and the sliding device 3 to the outside of the cable.

[0056] Disassemble and install device 1. When cable grounding is required, the locking block 42 can release the locking device, adjust the position of the sliding device 3, and connect the grounding wire to the exposed cable to complete the grounding. When grounding is not required, adjust the position of the sliding device 3 to move it closer to the fixed ring 22, and lock it using the locking device 4. After the grounding hardware is installed, subsequent reuse can avoid reinstallation, reducing installation steps.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A 10kV grounding fitting that can be installed under energized conditions, comprising: Grounding hardware Its features are: The grounding fitting also includes an installation device for fixing the grounding fitting to the cable, and the grounding fitting can be installed even when the cable is energized. The grounding hardware includes a fixing device, a sliding device, and a locking device. The fixing device can be installed on the outside of the cable and includes a first fixing ring and a second fixing ring. The sliding device is installed on the outside of the first fixing ring and can slide on the outside of the first fixing ring. The surface of the second fixing ring is provided with a connecting ring that cooperates with the sliding device. The end of the sliding device near the second fixing ring can enter the connecting ring. The surface of the connecting ring is provided with a protrusion that cooperates with the locking device. One end of the locking device is fixed to the outer side of the sliding device near the second fixed ring by a hinge. The locking device is also provided with a spring.

2. The 10kV grounding fitting that can be installed energized according to claim 1, characterized in that: The installation device includes pressure blocks, screws, and guide rods. There are two pressure blocks, the screws can control the distance between the pressure blocks, and the guide rods can limit the movement range of the pressure blocks.

3. A 10kV grounding fitting that can be installed energized according to claim 2, characterized in that: The pressing block is E-shaped.

4. A 10kV grounding fitting that can be installed energized according to claim 2, characterized in that: The pressure block is provided with a connecting hole. Two fixing holes are symmetrically arranged on the side of the hole of one pressure block. The top of the screw is provided with a recess, and the screw can enter the connecting hole. The fixing pin is provided in the fixing hole and cooperates with the recess, and the screw can rotate in the connecting hole. The connecting hole of the other pressure block is provided with a thread, and rotating the screw can control the position of the other pressure block on the screw. The pressure block is provided with a fixing groove. The guide rod is fixed in the fixing groove of one pressure block and passes through the fixing groove of the other pressure block.

5. A 10kV grounding fitting that can be installed energized according to claim 1, characterized in that: There are two of each of the following: the first fixed ring, the second fixed ring, and the sliding device. The first fixed ring, the second fixed ring, and the sliding device are all semi-circular cylindrical in shape and are connected by snap fasteners.

6. A 10kV grounding fitting that can be installed energized according to claim 5, characterized in that: The outer side of the fixed ring is provided with a sliding groove, and the inner side of the sliding device is provided with a sliding rail. The sliding groove can cooperate with the sliding rail to make a sliding connection.

7. A 10kV grounding fitting that can be installed energized according to claim 5, characterized in that: The locking device is provided on the outside of the sliding device. The locking device includes a bracket and a locking block. The bottom of the bracket and the locking block are connected by a hinge. A spring is also provided between the bracket and the locking block. The locking block extends to one side and has a buckle at its top.

8. A 10kV grounding fitting that can be installed energized according to claim 5, characterized in that: A connecting block is provided on the outer side of the fixed ring and the sliding device.

9. A 10kV grounding fitting that can be installed energized according to claim 8, characterized in that: The connecting block can cooperate with the mounting device.

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