A replaceable surge arrester

Abstract

The utility model discloses an easy change lightning arrester, including cross arm and top lightning arrester, the positioning post of lightning arrester bottom triangle bottom disc inserts cross arm mounting hole, is equipped with the arc shape of rotatable spin rod in the positioning post. Through the meshing rotation transmission rod of synchronous drive assembly upper driving gear and drive ring, through transmission assembly lower driving gear, driven gear makes arc shape spin rod spin out from the storage groove and abuts cross arm bottom wall, realizes the preliminary locking, again through the adjusting component hexagon bolt drive connection frame vertical jacking driven rod, makes arc shape spin rod complete second fastening of sticking cross arm. The disc cover antiskid line and arc shape guide support rod ensure that drive is stable, and the sliding slot limits driven rod movement track and prevents interference. The utility model discloses through single point drive synchronous control three positioning post action, has solved the problem of traditional lightning arrester low efficiency, uneven stress of each bolt fixation, has improved the installation convenience and anti -vibration reliability significantly, is applicable to the high altitude installation of power equipment and complex working condition long -term operation.

Description

Technical Field

[0001] This utility model relates to the field of surge arrester technology, and in particular to an easily replaceable surge arrester. Background Technology

[0002] In power systems, surge arresters are critical components that protect transmission lines and equipment from overvoltage damage, and their installation reliability directly affects the safe operation of the power system. Traditional surge arresters typically use bolts to fix the bottom chassis to supporting structures such as crossarms, requiring bolts to be screwed into the three corners of the triangular chassis for fixation. This method relies on manual operation, especially in high-altitude work scenarios, resulting in low installation efficiency, reliance on operator experience for positioning accuracy, and repeated disassembly and assembly easily leading to bolt stripping or wear of the chassis bolt holes, increasing maintenance costs.

[0003] Traditional bolt fixing requires tightening each bolt individually, taking approximately 15-20 minutes to install a single surge arrester. Furthermore, the limited space for tool operation during high-altitude work increases the risk of bolts falling off. Uneven force distribution at a single point of fixation can cause the surge arrester to tilt, and long-term vibration can easily lead to bolt loosening, posing a risk of bolt detachment in extreme weather conditions. Bolt preload relies on manual control, making precise adjustment difficult, and disassembly becomes difficult after corrosion. During maintenance, the entire chassis or even the surge arrester needs to be replaced, resulting in low maintenance efficiency.

[0004] To address the aforementioned issues, some quick-installation structures have emerged in existing technologies, but many suffer from poor synchronization or insufficient fixing strength. This invention achieves integrated operation of "quick positioning - synchronous locking - precise adjustment" by incorporating a rotatable arc-shaped rotating rod within the positioning columns of a triangular base, coupled with a gear-driven synchronous drive assembly and a threaded fine-tuning secondary fastening structure. Its core innovation lies in synchronously controlling the arc-shaped rotating rod movement of the three positioning columns through a single drive source, solving the inefficiency problem of traditional individual fixing. Furthermore, it enhances structural reliability through features such as sliding groove guidance and gear anti-disengagement design, effectively meeting the demands of power equipment for convenient installation and long-term stability under complex operating conditions. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an easily replaceable surge arrester.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A replaceable surge arrester includes a crossarm, with the surge arrester mounted on top and a triangular base at the bottom. Positioning posts are vertically inserted into the three corners of the triangular base. The top of the crossarm has multiple sets of mounting holes for inserting the positioning posts. Each positioning post has a symmetrically arranged storage groove along its outer circumference. An arc-shaped rotating rod is located inside each storage groove, with its top abutting against the bottom wall of the crossarm. A driven rod is inserted into the end of each arc-shaped rotating rod, slidingly inserted into the positioning post. A transmission rod is rotatably inserted into the center of each positioning post. The bottom of each transmission rod has a transmission component for controlling the rotation of the arc-shaped rotating rod, and the top of each transmission rod has a synchronous drive component for driving its synchronous rotation.

[0008] The above technical solution achieves rapid positioning, insertion, and synchronous locking of the surge arrester by setting an extendable arc-shaped rotating rod inside the positioning column of the triangular base, in conjunction with the crossarm mounting hole and synchronous drive assembly. This eliminates the need for individual bolt fixing, increasing installation efficiency by more than 60%. The storage slot design ensures that the arc-shaped rotating rod is unobstructed during installation, making insertion convenient. After being unscrewed, it abuts against the bottom wall of the crossarm to form an initial mechanical lock, preventing the surge arrester from detaching upwards.

[0009] Preferably, the transmission assembly includes a lower drive gear that is sleeved on the bottom end of the transmission rod, both ends of the lower drive gear are meshed with driven gears, the driven gears are sleeved on the bottom end of the driven rod, and the bottom end of the driven rod is provided with an adjustment assembly for driving the arc-shaped rotary rod to rise and fall.

[0010] Through the above technical solution: the transmission component converts the rotational motion of the transmission rod into the rotation of the driven rod through the meshing of the lower driving gear and the driven gear, thereby driving the arc-shaped rotating rod to rotate out or be stored in the storage slot, realizing the mechanical synchronization of the three positioning column movements, ensuring that the three fixed points are subjected to uniform force, avoiding the installation deviation caused by traditional single-point adjustment, and improving the overall fixing reliability.

[0011] Preferably, the synchronous drive assembly includes an upper drive gear that is sleeved on the top of the transmission rod. The upper drive gear is sleeved with the same drive ring. The inner surface of the drive ring has a number of internal teeth that mesh with the upper drive gear.

[0012] Through the above technical solution: the synchronous drive component meshes with the internal teeth of the drive ring and the upper drive gear, so that a single drive source can synchronously drive the three transmission rods to rotate, realizing the complete synchronous movement of the three positioning columns. There is no need to operate each positioning column separately, which is especially suitable for high-altitude operation scenarios, reducing operation steps and manpower consumption, and improving installation consistency.

[0013] Furthermore, the adjustment assembly includes a connecting frame rotatably connected to the bottom end of the driven rod, with a hexagonal bolt threaded into the center of the connecting frame, and the ends of the hexagonal bolts rotatably connected to the bottom center of the positioning column.

[0014] Through the above technical solutions: the adjustment component converts the rotational motion into the vertical sliding of the driven rod through the threaded transmission of the hexagonal bolt and the connecting frame, so as to achieve precise fine adjustment of the fit between the arc-shaped rotating rod and the bottom wall of the crossarm. The installation gap is eliminated by secondary tightening, forming a rigid contact, which enhances the arrester's resistance to falling off under conditions such as vibration and wind.

[0015] Furthermore, the top of the drive ring is equipped with a disc cover, and the top of the disc cover has anti-slip texture.

[0016] Through the above technical solutions: the anti-slip texture design on the top of the disc cover increases the friction of the hand, making it easier to apply force and rotate; the arc-shaped guide support rod at the bottom slides with the triangular base to ensure the stability and coaxiality of the drive ring during rotation, avoid transmission jamming caused by eccentric force, and improve the ease of operation and reliability of the drive mechanism.

[0017] Preferably, each of the position posts has a groove at its bottom end for sliding, rotating and positioning of the driven rod.

[0018] Through the above technical solutions: the groove at the bottom of the positioning column provides sliding and rotation guidance for the driven rod, limiting its movement trajectory to a composite motion of "vertical sliding + rotation around the axis", ensuring that the arc-shaped rotating rod only rotates out or retracts along the preset path, preventing motion interference and structural jamming, ensuring that each component is linked according to the design logic, and reducing the risk of installation errors.

[0019] Preferably, the bottom of the cover is provided with three arc-shaped guide support rods, all of which are slidably inserted into the triangular base.

[0020] Through the above technical solution: the arc-shaped guide support rod at the bottom of the disc cover slides inside the triangular chassis, providing radial limit and rotational guidance for the drive ring, ensuring that the drive ring maintains its central positioning when rotating, avoiding axial movement or tilting, thereby ensuring stable meshing between the upper drive gear and the teeth of the drive ring, and improving the transmission accuracy and reliability of the synchronous drive mechanism.

[0021] The beneficial effects of this utility model are as follows:

[0022] 1. By engaging the drive ring with multiple gears, a single rotational motion is transformed into the synchronous motion of three positioning columns, avoiding the need for individual adjustments in traditional equipment and improving installation efficiency by more than 60%.

[0023] 2. The "hook" of the arc-shaped swivel achieves initial pull-out resistance, and the tightening of the hexagonal bolts achieves rigid connection, forming a composite fixing structure of "mechanical locking + pressure fastening", which is suitable for long-term stable operation under complex working conditions.

[0024] 3. Matching of guide grooves, gear thickness differences, and friction parameters ensures that each component moves along a preset trajectory, preventing structural jamming or failure due to improper operation during installation.

[0025] In summary, this utility model, through the deep integration of mechanical transmission and structural innovation, achieves efficient operation of the entire process of "rapid positioning - synchronous locking - precise adjustment" of the surge arrester, significantly improving the ease of installation and operational reliability of power equipment.

[0026] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of an easily replaceable surge arrester proposed in this utility model.

[0028] Figure 2 This is a schematic diagram of the overall external structure of an easily replaceable surge arrester proposed in this utility model.

[0029] Figure 3 This is a schematic diagram of the synchronous drive assembly structure of an easily replaceable surge arrester proposed in this utility model;

[0030] Figure 4 This is a schematic diagram of the transmission assembly structure of an easily replaceable surge arrester proposed in this utility model;

[0031] Figure 5 This is a schematic diagram showing the release and storage state changes of the arc-shaped rotating rod of an easily replaceable surge arrester proposed in this utility model.

[0032] Figure 6 This utility model proposes an easily replaceable surge arrester. Figure 3 A magnified schematic diagram of the local structure (adjustment component) at point A.

[0033] In the diagram: 1. Crossarm; 101. Mounting hole; 2. Surge arrester; 3. Triangular base; 4. Positioning post; 41. Storage slot; 42. Slide groove; 5. Transmission rod; 6. Lower drive gear; 7. Driven rod; 8. Arc-shaped rotating rod; 9. Driven gear; 10. Connecting frame; 11. Hex bolt; 12. Upper drive gear; 13. Drive ring; 131. Internal tooth; 14. Disc cover; 141. Anti-slip texture; 15. Arc-shaped guide support rod. Detailed Implementation

[0034] 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.

[0035] Example 1, referring to Figures 1 to 6 A replaceable surge arrester includes a crossarm 1, a surge arrester 2 at the top of the crossarm 1, a triangular base 3 at the bottom of the surge arrester 2, and positioning posts 4 vertically inserted at the three corners of the triangular base 3. The top of the crossarm 1 has multiple sets of mounting holes 101 for inserting the positioning posts 4. The bottom of the positioning posts 4 has symmetrically opened storage grooves 41 along its outer circumference. The storage grooves 41 are all equipped with arc-shaped rotating rods 8. The top of the arc-shaped rotating rods 8 abuts against the bottom wall of the crossarm 1. The ends of the arc-shaped rotating rods 8 are all equipped with driven rods 7, which are slidably inserted into the positioning posts 4. The center of the positioning posts 4 is rotatably equipped with a transmission rod 5. The bottom of the transmission rod 5 is equipped with a transmission component for controlling the rotation of the arc-shaped rotating rods 8, and the top of the transmission rod 5 is equipped with a synchronous drive component for driving its synchronous rotation.

[0036] In this embodiment, the transmission assembly includes lower drive gears 6 all sleeved on the bottom end of the transmission rod 5. Driven gears 9 mesh at both ends of the lower drive gears 6. Each driven gear 9 is sleeved on the bottom end of the driven rod 7. Each driven rod 7 has an adjustment assembly at its bottom end for driving the arc-shaped rotating rod 8 to rise and fall. The synchronous drive assembly includes upper drive gears 12 all sleeved on the top end of the transmission rod 5. A common drive ring 13 is sleeved on the outside of the upper drive gears 12. The inner surface of the drive ring 13 has a plurality of internal teeth 131, all of which mesh with the upper drive gears 12. The meshing and adjusting assembly includes a connecting frame 10 rotatably connected to the bottom end of the driven rod 7. A hexagonal bolt 11 is threaded into the center of the connecting frame 10. The ends of the hexagonal bolts 11 are rotatably connected to the bottom center of the positioning column 4. A disc cover 14 is provided on the top of the drive ring 13. The top of the disc cover 14 is provided with anti-slip texture 141. The bottom end of the positioning column 4 is provided with a sliding groove 42 for sliding, rotating and positioning of the driven rod 7. The bottom of the disc cover 14 is provided with three arc-shaped guide support rods 15. The arc-shaped guide support rods 15 are slidably inserted into the triangular base 3.

[0037] The working principle of this embodiment:

[0038] I. Initial Positioning and Insertion Installation

[0039] To align and insert the positioning posts, first place the triangular base 3 at the bottom of the surge arrester 2 above the crossarm 1, aligning the positioning posts 4 at the three corners of the triangular base with the mounting holes 101 at the top of the crossarm. At this time, the arc-shaped rotating rod 8 in the storage groove 41 at the bottom of the positioning post is in the retracted state, as shown below. Figure 5 As shown in the right half, its outer contour is flush with the outer circumference of the positioning post, which facilitates non-interference insertion into the mounting hole.

[0040] After the initial positioning pin is fully inserted into the mounting hole, its top end is flush with the upper surface of the crossarm, forming an initial mechanical positioning to ensure that the surge arrester is in the preset installation position.

[0041] II. Synchronous Drive and Arc-Shaped Rotary Rod Release

[0042] The disc cover rotates synchronously when both hands are gripping the anti-slip texture 141 on the top of the disc cover 14, applying rotational force. The three arc-shaped guide support rods 15 at the bottom of the disc cover slide along the guide grooves inside the triangular base 3, as... Figure 3 As shown, ensure that the cover rotates smoothly around the central axis of the triangular base.

[0043] The disc cover drives the drive ring 13 to rotate synchronously. The internal teeth 131 on the inner surface of the drive ring mesh with the three upper drive gears 12, such as... Figure 4 As shown, the three transmission rods 5 rotate at the same speed and in the same direction, achieving complete synchronization of the three positioning pins.

[0044] The transmission assembly, in conjunction with the rotating arc-shaped drive rod, causes the lower driving gear 6 at the bottom of the drive rod to rotate, meshing with the driven gears 9 on both sides, as shown in the image. Figure 4 As shown. The driven gear drives the driven rod 7 to rotate around the central axis of the positioning column, causing the arc-shaped rotating rod 8 at the top of the driven rod to gradually rotate out of the receiving groove 41, as shown. Figure 5 The left half is shown.

[0045] After the arc-shaped rod is spun out, its top arc surface contacts the bottom wall of crossarm 1, forming a "hook" structure to prevent the surge arrester from detaching upwards, thus completing the initial fixation.

[0046] III. Secondary tightening and precise adjustment

[0047] The hexagonal bolt drives the vertical tightening mechanism. A wrench is used to rotate the hexagonal bolt 11 at the bottom of the positioning column. Since the hexagonal bolt and the connecting bracket 10 are threaded together, ... Figure 6 As shown, the rotation of the bolt is converted into the vertical linear motion of the connecting frame.

[0048] The connecting frame drives the driven rods 7 on both sides to slide vertically along the slide groove 42 at the bottom of the positioning column. The slide groove limits the driven rods to move up and down and rotate, pushing the top of the arc-shaped rotating rod 8 to further press against the bottom wall of the crossbeam.

[0049] As the driven rod moves upward, the contact pressure between the arc-shaped swivel and the bottom wall of the crossarm increases, forming a rigid contact, eliminating installation gaps, and enhancing vibration and wind resistance.

[0050] The thickness of the lower driving gear 6 is less than that of the driven gear 9, such as... Figure 4 As shown, this ensures that the driven gear and the lower driving gear remain engaged when the driven rod slides vertically, thus preventing transmission failure.

[0051] The frictional force at the hinge point between the transmission rod 5 and the hexagonal bolt 11 is designed to be less than the frictional force between the bolt and the threaded pair of the connecting bracket, to prevent the hexagonal bolt from rotating synchronously when the disc cover is rotated, thus ensuring the independence of the adjustment operation.

[0052] IV. Disassembly and Reset Procedure

[0053] Loosen the secondary tightening hexagonal bolts and rotate them in the opposite direction to allow the connecting frame to move the driven rod downwards, separating the top of the arc-shaped rotating rod from the bottom wall of the crossbeam and releasing the rigid contact.

[0054] The synchronously retractable arc-shaped rotating rod rotates in the opposite direction of the disc cover, and through the drive ring and gear set, the arc-shaped rotating rod is rotated back into the storage slot, restoring the initial insertion state.

[0055] Pull out the positioning pin and lift the surge arrester upwards. The positioning pin will be pulled out of the mounting hole, completing the disassembly.

[0056] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A replaceable surge arrester, comprising a crossarm (1), wherein a surge arrester (2) is provided at the top of the crossarm (1), and a triangular base (3) is provided at the bottom of the surge arrester (2), characterized in that, The three corners of the triangular base (3) are vertically inserted with positioning posts (4). The top of the crossbeam (1) is provided with multiple sets of mounting holes (101) for inserting the positioning posts (4). The bottom of the positioning posts (4) is symmetrically provided with storage grooves (41) along its outer circumference. The storage grooves (41) are provided with arc-shaped rotating rods (8). The top of the arc-shaped rotating rods (8) abuts against the bottom wall of the crossbeam (1). The ends of the arc-shaped rotating rods (8) are provided with driven rods (7). The driven rods (7) are slidably inserted into the positioning posts (4). The center of the positioning posts (4) is rotatably inserted with transmission rods (5). The bottom of the transmission rods (5) is provided with transmission components for controlling the rotation of the arc-shaped rotating rods (8). The top of the transmission rods (5) is provided with synchronous drive components for driving them to rotate synchronously.

2. The replaceable surge arrester according to claim 1, characterized in that, The transmission assembly includes a lower drive gear (6) that is sleeved on the bottom end of the transmission rod (5). Both ends of the lower drive gear (6) are meshed with driven gears (9). The driven gears (9) are sleeved on the bottom end of the driven rod (7). The bottom end of the driven rod (7) is provided with an adjustment assembly for driving the arc-shaped rotating rod (8) to rise and fall.

3. The replaceable surge arrester according to claim 2, characterized in that, The synchronous drive assembly includes an upper drive gear (12) that is sleeved on the top of the transmission rod (5). The upper drive gear (12) is sleeved with the same drive ring (13). The inner ring surface of the drive ring (13) has a number of internal teeth (131) that mesh with the upper drive gear (12).

4. The replaceable surge arrester according to claim 3, characterized in that, The adjustment assembly includes a connecting frame (10) rotatably connected to the bottom end of the driven rod (7). A hexagonal bolt (11) is threaded into the center of the connecting frame (10), and the ends of the hexagonal bolt (11) are rotatably connected to the bottom center of the positioning column (4).

5. A replaceable surge arrester according to claim 4, characterized in that, The drive ring (13) is provided with a disc cover (14) on the top, and the disc cover (14) is provided with anti-slip texture (141) on the top.

6. A replaceable surge arrester according to claim 5, characterized in that, The bottom end of each positioning column (4) is provided with a groove (42) for sliding, rotating and positioning of the driven rod (7).

7. A replaceable surge arrester according to claim 6, characterized in that, The bottom of the cover (14) is provided with three arc-shaped guide support rods (15), all of which are slidably inserted into the triangular base (3).

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