Disconnecting switch locking device

Abstract

The utility model discloses an isolating switch locking device, comprising a main knife vertical connecting rod having a closing state and an opening state; the grounding switch vertical connecting rod has a switching-on state and a switching-off state, is respectively arranged on the main switch vertical connecting rod and the grounding switch vertical connecting rod and can synchronously rotate and move along with the main switch vertical connecting rod and the grounding switch vertical connecting rod; the two ends of the locking rod are provided with locking structures corresponding to the two locking assemblies, the locking rod can move in a reciprocating mode in the length direction of the locking rod so that the two locking structures can be alternately matched with the corresponding locking assemblies in a limiting mode, and when the locking structures are matched with the corresponding locking assemblies in a limiting mode, the corresponding locking assemblies can be limited to rotate and move. The locking assembly is installed on the main knife vertical connecting rod and the grounding knife vertical connecting rod, the installation height is controllable, maintenance and observation are convenient, and the situation that the height is too high due to the fact that the locking assembly is installed on the switch bottom frame is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of isolating switches, in particular to an isolating switch locking device. Background Art

[0002] In power transmission and distribution systems, outdoor high-voltage disconnect switches often use a main switch and an earth switch in combination. These switches are operated via separate operating mechanisms. To prevent misoperation and ensure safe grid operation, a mechanical interlock must be installed between the main switch and the earth switch. This prevents the earth switch from closing when the main switch is closed, and vice versa. However, in practice, the mechanical interlock is installed on the switch chassis, which is typically located at a relatively high height. This makes the mechanical interlock difficult to install, difficult to maintain, and unable to directly observe the interlock status. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems in the prior art. To this end, the utility model proposes an isolation switch locking device with a controllable installation height and convenient maintenance and observation.

[0004] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0005] A locking device for an isolating switch comprises: a main knife vertical connecting rod, which has a closing state and an opening state, and can be switched between the closing state and the opening state by rotating along its own axis; a ground knife vertical connecting rod spaced apart from the main knife vertical connecting rod, which has a closing state and an opening state, and can be switched between the closing state and the opening state by rotating along its own axis. Two locking components are respectively installed on the main knife vertical connecting rod and the ground knife vertical connecting rod and can rotate synchronously with the main knife vertical connecting rod and the ground knife vertical connecting rod; a locking rod is provided with locking position structures corresponding to the two locking components at both ends. The locking rod can reciprocate along its own length direction so that the two locking structures are alternately matched with the corresponding locking components. When the locking structure is matched with the corresponding locking component, the corresponding locking component can be restricted from rotating. When the main knife vertical link and the ground knife vertical link are both in the open state, the main knife vertical link and the ground knife vertical link can choose to rotate to the closed state. When the main knife vertical link or the ground knife vertical link moves to the closed state, it can drive the locking rod to move until the locking structure is matched with the locking component on the ground knife vertical link or the main knife vertical link.

[0006] Furthermore, it also includes two bearing assemblies spaced apart along the length direction of the locking rod, for bearing the locking rod.

[0007] Furthermore, the bearing assembly includes a vertical plate and a bearing member, the vertical plate is provided with a first U-shaped groove opening downward, the bearing member is provided with a second U-shaped groove opening upward, the bearing member is connected to the vertical plate so that the first U-shaped groove and the second U-shaped groove define a through-hole for the locking rod to pass through, the bearing member is equipped with a rolling member that can rotate along its own axis, the rotation axis of the rolling member is perpendicular to the length direction of the locking rod, and the rolling member is used to contact and support the locking rod.

[0008] Furthermore, the upper end of the vertical plate is provided with a horizontal plate extending toward the main knife vertical link or the ground knife vertical link on the corresponding side, and an auxiliary positioning block is installed on the horizontal plate. The auxiliary positioning block has a positioning groove for the corresponding main knife vertical link or the ground knife vertical link to be embedded.

[0009] Furthermore, the locking assembly includes a limit plate, which is fixedly mounted on the corresponding main knife vertical link or ground knife vertical link, and the limit plate is provided with an arc edge and a notch on the circumference of the limit plate, and the side of the notch facing the arc edge is a bevel connected to the arc edge. When the notch is aligned with the corresponding locking structure, the main knife vertical link or ground knife vertical link corresponding to the notch is in an open state; the arc edge corresponding to the main knife vertical link or ground knife vertical link in the closed state is adjacent to the corresponding locking structure; when the arc edge corresponding to the main knife vertical link or ground knife vertical link is adjacent to the corresponding locking structure, the other locking structure is inserted into the notch corresponding to the ground knife vertical link or the main knife vertical link.

[0010] Furthermore, locking plates are installed at the ends of both ends of the locking rod, and the locking plates are provided with open grooves extending along the length direction of the locking rod for the main knife vertical connecting rod or the ground knife vertical connecting rod to pass through, and the locking structure is installed on the side edge of the corresponding locking plate away from the locking rod, and the locking structure is a rotating part rotatably installed on the locking plate along its own axis.

[0011] Furthermore, a first connecting plate is provided at the end of both ends of the locking rod, a second connecting plate is installed on the side of the first connecting plate away from the locking rod, a mounting plate is provided on the second connecting plate, and the locking plate and the mounting plate are provided with corresponding holes for connection and fixation by fasteners, and the first connecting plate and the second connecting plate can be adjusted to a distance and fixed.

[0012] Furthermore, the first connecting plate and the second connecting plate are provided with corresponding mounting holes and are penetrated by screw rods, and two groups of nuts are installed on the screw rods, and the two groups of nuts clamp and fix the first connecting plate and the second connecting plate respectively.

[0013] Furthermore, the limiting plate is fixed with a first clamping block, the first clamping block is installed with a second clamping block through a fastener, and the first clamping block and the second clamping block are clamped and fixed to the corresponding main knife vertical connecting rod or ground knife vertical connecting rod.

[0014] Furthermore, the main knife vertical connecting rod and the ground knife vertical connecting rod are both installed with limit assemblies, and the locking plate is clamped between the limit plate and the limit assembly and can move in the gap between the limit plate and the limit assembly.

[0015] The utility model has the following beneficial effects:

[0016] The locking assembly is installed on the main knife vertical link and the ground knife vertical link. The installation height is controllable, which is convenient for inspection and observation, and the height will not be too high due to the locking assembly being installed on the switch chassis; and when the main knife vertical link and the ground knife vertical link are both in the open state, the main knife vertical link and the ground knife vertical link can choose one to rotate and move to the closed state. When the main knife vertical link or the ground knife vertical link moves to the closed state, it can drive the locking rod to move to the locking position structure and cooperate with the locking assembly on the ground knife vertical link or the main knife vertical link, which can limit the corresponding locking assembly and the ground knife vertical link or the main knife vertical link to rotate, so that only one of the ground knife vertical link and the main knife vertical link can be switched to the closed state, preventing misoperation from causing both the ground knife vertical link and the main knife vertical link to reach the closed state.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the structure of the utility model in use;

[0020] Figure 2 yes Figure 1 A magnified view of point A;

[0021] Figure 3 It is a schematic diagram of a partially exploded state of the utility model;

[0022] Figure 4 It is a partial structural diagram of the utility model;

[0023] Figure 5 This is a structural diagram of the main switch vertical link in the open state and the ground switch vertical link in the closed state;

[0024] Figure 6 Therefore Figure 5A schematic diagram of a state in the process of switching from an initial state to a new state;

[0025] Figure 7 Therefore Figure 5 Another state diagram in the process of switching from the initial state to the current state;

[0026] Figure 8 Therefore Figure 5 The state is a schematic diagram of the initial state and the completed state switching.

[0027] Legend:

[0028] Main knife vertical connecting rod 100, operation box 101;

[0029] Ground knife vertical link 200;

[0030] Locking assembly 300, limiting plate 310, arc edge 311, notch 312, bevel edge 313, first clamping block 320, second clamping block 330;

[0031] Locking rod 400, locking structure 410, locking plate 420, opening slot 421, first connecting plate 430, second connecting plate 440, mounting plate 441, screw 450, nut 460;

[0032] Bearing assembly 500, vertical plate 510, first U-shaped groove 511, bearing member 520, second U-shaped groove 521, through hole 522, rolling member 530, horizontal plate 540, auxiliary positioning block 550, positioning groove 551, locking frame 560, bearing channel steel 561;

[0033] Limiting assembly 600 and holding block 610. DETAILED DESCRIPTION

[0034] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, the descriptions of "first," "second," etc. in this utility model are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0038] Please refer to Figure 1 and Figure 2 The utility model provides an isolation switch locking device in a preferred embodiment, including a main knife vertical connecting rod 100, a ground knife vertical connecting rod 200, a locking assembly 300 and a locking rod 400.

[0039] The main knife vertical link 100 has a closing state and an opening state, and the ground knife vertical link 200 rotates along its own axis to realize the switching between the closing state and the opening state; specifically, the disconnector is usually provided with an operating box 101 to control the movement of the main knife vertical link 100, and the operating box 101 has an output shaft that extends and can rotate, and the output shaft is connected to the main knife vertical link 100 through a coupling, thereby driving the main knife vertical link 100 to rotate, thereby realizing the closing and opening of the main knife. The main knife vertical link 100 is connected to the main knife so as to drive the main knife to realize the opening and closing of the main knife. It can be understood that when the main knife vertical link 100 rotates to the closing state, it can drive the main knife to realize the closing state, and when the main knife vertical link 100 rotates to the opening state, it can drive the main knife to realize the opening state.

[0040] The ground cutter vertical connecting rod 200 is spaced apart from the main cutter vertical connecting rod 100. The ground cutter vertical connecting rod 200 has a closing state and an opening state. The ground cutter vertical connecting rod 200 rotates along its own axis to realize the switching of the closing state and the opening state. Specifically, the disconnector is usually provided with an operating box 101 to control the movement of the ground cutter vertical connecting rod 200. The operating box 101 has an output shaft that extends out and can rotate. The output shaft is connected to the ground cutter vertical connecting rod 200 by a coupling, thereby driving the ground cutter vertical connecting rod 200 to rotate, thereby realizing the closing and opening of the ground cutter. The ground cutter vertical connecting rod 200 is connected to the ground cutter so as to drive the ground cutter to realize opening and closing. It is understandable that when the ground cutter vertical connecting rod 200 rotates to the closing state, the ground cutter can be driven to realize closing. When the ground cutter vertical connecting rod 200 rotates to the opening state, the ground cutter can be driven to realize opening.

[0041] There are two locking assemblies 300, which are respectively installed on the main knife vertical link 100 and the ground knife vertical link 200 and can rotate synchronously with the main knife vertical link 100 and the ground knife vertical link 200, that is, a locking assembly 300 is installed on each of the main knife vertical link 100 and the ground knife vertical link 200, and the locking assembly 300 can be installed at any height of the main knife vertical link 100 and the ground knife vertical link 200 within a certain range, so that it is not subject to installation height restrictions. It can be understood that the installation heights of the two locking assemblies 300 are the same.

[0042] Locking structures 410 corresponding to the two locking components 300 are installed at both ends of the locking rod 400. The locking rod 400 can reciprocate along its own length direction so that the two locking structures 410 can alternately cooperate with the corresponding locking components 300. When the locking structures 410 cooperate with the corresponding locking components 300, they can limit the rotation of the corresponding locking components 300; that is, at most only one side of the locking structure 410 will cooperate with the corresponding locking component 300, and the two locking structures 410 cannot cooperate with the two locking components 300 at the same time. As a result, when one of the locking components 300 can rotate, the other locking component 300 cannot rotate, that is, only one of the main knife vertical connecting rod 100 and the ground knife vertical connecting rod 200 can rotate to achieve the closing action. Specifically, in this embodiment, if Figure 1 As shown, the locking rod 400 extends in the left and right horizontal directions, and the ground knife vertical connecting rod 200 and the main knife vertical connecting rod 100 are spaced apart in the left and right directions.

[0043] When both the main cutter vertical link 100 and the ground cutter vertical link 200 are in the open state, one of the main cutter vertical link 100 and the ground cutter vertical link 200 can rotate to the closed state, preventing the main cutter vertical link 100 and the ground cutter vertical link 200 from simultaneously closing the main cutter and the ground cutter. When the main cutter vertical link 100 or the ground cutter vertical link 200 moves to the closed state, it can drive the locking rod 400 to move to the locking structure 410 and limit the locking assembly 300 on the ground cutter vertical link 200 or the main cutter vertical link 100. That is, when the main knife vertical link 100 moves to the closed state, it can drive the locking rod 400 to move to the locking component 300 on the ground knife vertical link 200 and the corresponding locking structure 410 to limit the cooperation; when the ground knife vertical link 200 moves to the closed state, it can drive the locking rod 400 to move to the locking component 300 on the main knife vertical link 100 and the corresponding locking structure 410 to limit the cooperation.

[0044] In a preferred embodiment of the present invention, an isolation switch locking device is provided. The locking assembly 300 is installed on the main knife vertical link 100 and the ground knife vertical link 200. It can be installed at any height of the main knife vertical link 100 and the ground knife vertical link 200 as needed. The height will not be too high due to the locking assembly 300 being installed on the switch chassis, so that the installation height is controllable and convenient for inspection and observation; and when the main knife vertical link 100 and the ground knife vertical link 200 are both in the open state, the main knife vertical link 100 and the ground knife vertical link 200 can be rotated to close the switch. When the main knife vertical link 100 or the ground knife vertical link 200 moves to the closed state, it can drive the locking rod 400 to move to the locking structure 410 and cooperate with the locking component 300 on the ground knife vertical link 200 or the main knife vertical link 100, which can limit the rotation of the corresponding locking component 300 and the ground knife vertical link 200 or the main knife vertical link 100, so that only one of the ground knife vertical link 200 and the main knife vertical link 100 can be switched to the closed state, preventing misoperation from causing both the ground knife vertical link 200 and the main knife vertical link 100 to reach the closed state.

[0045] Reference Figure 1 and Figure 2 In some embodiments of the present invention, two supporting assemblies 500 are arranged at intervals along the length direction of the locking rod 400 to support the locking rod 400, that is, two supporting assemblies 500 are arranged at intervals along the left and right directions, thereby achieving multi-point support for the locking rod 400, improving the support stability, and avoiding the gravity of the locking rod 400 and the components on the locking rod 400 being entirely shared by the locking assembly 300.

[0046] Reference Figure 2 and Figure 3In a further embodiment of the present invention, the support assembly 500 includes a vertical plate 510 and a support member 520. The vertical plate 510 is provided with a first U-shaped groove 511 with a downward opening, and the support member 520 is provided with a second U-shaped groove 521 with an upward opening. The support member 520 is connected to the vertical plate 510 so that the first U-shaped groove 511 and the second U-shaped groove 521 define a through-hole 522 for the locking rod 400 to pass through. The openings of the first U-shaped groove 511 and the second U-shaped groove 521 facilitate direct installation, without having to insert the locking rod 400 from the end and move it along the locking rod 400 for installation. The through-hole 522 provides a certain degree of rough positioning for the locking rod 400, and a gap is left between the through-hole 522 and the locking rod 400 to reduce resistance to the movement of the locking rod 400. The bearing member 520 is mounted with a rolling member 530 that can rotate along its own axis. The axis of rotation of the rolling member 530 is perpendicular to the length of the locking rod 400. The rolling member 530 is used to contact and support the locking rod 400, so that when the locking rod 400 moves, the rolling member 530 can roll with it, reducing the resistance to the movement of the locking rod 400. In the prior art, the movement of the locking rod mounted on the vertical link is often achieved using a grooved track structure. This structure is complex and has poor stability. The gap between the roller and the grooved track is easily blocked by debris, causing the lock to become stuck. The use of the rolling member 530 to support the bearing can effectively avoid this problem. The bearing of the rolling member 530 also prevents the weight of the locking rod 400 and its components from being fully distributed to the locking assembly 300.

[0047] Reference Figure 2 and Figure 3 In a further embodiment of the present invention, a horizontal plate 540 is provided at the upper end of the vertical plate 510, extending toward the main knife vertical link 100 or the ground knife vertical link 200 on the corresponding side, that is, the upper end of the vertical plate 510 of the left supporting assembly 500 is provided with a horizontal plate 540 extending toward the main knife vertical link 100, and the upper end of the vertical plate 510 of the right supporting assembly 500 is provided with a horizontal plate 540 extending toward the ground knife vertical link 200. An auxiliary positioning block 550 is installed on the horizontal plate 540. The auxiliary positioning block 550 has a positioning groove 551 for the corresponding main knife vertical link 100 or ground knife vertical link 200 to be embedded. The auxiliary positioning block 550 on the left side of the bearing assembly 500 cooperates with the main knife vertical link 100, and the auxiliary positioning block 550 on the right side of the bearing assembly 500 cooperates with the ground knife vertical link 200. It can play an auxiliary limiting positioning effect on the main knife vertical link 100 and the ground knife vertical link 200, avoiding the main knife vertical link 100 or the ground knife vertical link 200 from being deformed due to the high vertical height. Figure 2As shown, a locking frame 560 is fixedly mounted on the steel bracket 102, and a load-bearing channel steel 561 is fixed on the locking frame 560. The load-bearing channel steel 561 is connected and fixed to the horizontal plate 540, thereby transferring the gravity of the load-bearing assembly 500, the locking rod 400 and the components on the locking rod 400 to the steel bracket 102; and usually the switch base is installed at the upper end of the steel bracket 102, at a higher height.

[0048] Reference Figure 2 and Figure 3 In some embodiments of the present invention, the locking assembly 300 includes a limit plate 310, which is fixedly installed on the corresponding main knife vertical link 100 or the ground knife vertical link 200. The limit plate 310 is provided with an arc edge 311 and a notch 312 on its circumference. The side of the notch 312 facing the arc edge 311 is a bevel 313 connected to the arc edge 311. In order to make the locking structure 410 automatically retract at the notch 312 and be stable, the notch 312 is V-shaped as a whole. When the notch 312 is aligned with the corresponding locking structure 410, the main knife vertical link 100 or the ground knife vertical link 200 corresponding to the notch 312 is in the open state; the arc edge 311 corresponding to the main knife vertical link 100 or the ground knife vertical link 200 in the closed state is adjacent to the corresponding locking structure 410; when the arc edge 311 corresponding to the main knife vertical link 100 or the ground knife vertical link 200 is adjacent to the corresponding locking structure 410, the other locking structure 410 is inserted into the notch 312 corresponding to the ground knife vertical link 200 or the main knife vertical link 100; that is, Figure 8 As shown, when the main knife vertical link 100 is in the closed state and the arc edge 311 corresponding to the main knife vertical link 100 is adjacent to the corresponding locking structure 410, the other locking structure is engaged with the corresponding notch 312 of the ground knife vertical link 200, so that the ground knife vertical link 200 remains in the open state; Figure 5 As shown, when the ground knife vertical link 200 is in the closed state and the arc edge 311 corresponding to the ground knife vertical link 200 is adjacent to the corresponding locking structure 410, another locking structure is inserted into the notch 312 corresponding to the main knife vertical link 100, so that the main knife vertical link 100 remains in the open state.

[0049] Below through Figures 5 to 8 , describing how the main knife vertical link 100 and the ground knife vertical link 200 switch states.

[0050] Figure 5When the switch is in the closed position, the ground knife vertical link 200 is in the closed position, and the arc edge 311 of the locking component 300 on the ground knife vertical link 200 is adjacent to the corresponding locking structure 410, which limits the locking rod 400 from moving to the left, and prevents the locking structure 410 corresponding to the main knife vertical link 100 from disengaging from the corresponding notch, thereby keeping the main knife vertical link 100 limited, which can effectively prevent the main knife vertical link 100 from moving toward the closed state; when it is necessary to switch the state, it is necessary to first rotate the ground knife vertical link 200 to drive the notch 312 of its corresponding locking component 300 to align with the locking structure 410, and reach Figure 6 The state shown is that the ground knife vertical link 200 is in the open state; then the main knife vertical link 100 is rotated, and the locking structure 410 corresponding to the main knife vertical link 100 gradually separates from the notch 312 along the oblique edge 313 and approaches the arc edge 311, and pulls the locking rod 400 toward the main knife vertical link 100, so that the locking structure 410 corresponding to the ground knife vertical link 200 is stuck in the notch 312 corresponding to the ground knife vertical link 200, reaching Figure 7 In the state shown, the locking structure 410 is stuck in the notch 312 corresponding to the ground knife vertical link 200 to achieve limited cooperation, and the other locking structure 410 is close to the arc edge 311 corresponding to the main knife vertical link 100, thereby limiting the locking structure 410 from being separated from the notch 312 corresponding to the ground knife vertical link 200, so that the ground knife vertical link 200 remains in the open state; then the main knife vertical link 100 continues to rotate, and the locking structure 410 moves relatively along the arc edge 311 to reach Figure 8 In the state shown, the main knife vertical connecting rod 100 is in the closed state.

[0051] Reference Figure 3In some embodiments of the present invention, locking plates 420 are mounted at both ends of the locking rod 400. The locking plates 420 have an open slot 421 extending along the length of the locking rod 400 for the main knife vertical link 100 or the ground knife vertical link 200 to pass through. The open slot 421 allows the main knife vertical link 100 or the ground knife vertical link 200 to pass through and allows the locking plates 420 to have a certain range of motion to avoid structural interference. Specifically, the open slot 421 of the locking plate 420 at the left end of the locking rod 400 engages with the main knife vertical link 100, while the open slot 421 of the locking plate 420 at the right end of the locking rod 400 engages with the ground knife vertical link 200. Furthermore, the opening slot 421 cooperates with the main knife vertical link 100 and the ground knife vertical link 200 to provide a movable guide for the locking rod 400. It is understandable that the width of the opening slot 421 matches the diameter of the main knife vertical link 100 and the ground knife vertical link 200. The locking structure 410 is mounted on the edge of the corresponding locking plate 420 away from the locking rod 400. The locking structure 410 is located on the side of the main knife vertical link 100 or the ground knife vertical link 200 facing away from the locking rod 400. The locking structure 410 is a rotating part that is rotatably mounted on the locking plate 420 along its own axis. Therefore, when the locking structure 410 moves along the arc edge 311 and the bevel edge 313, the resistance is smaller, making the switching state smoother. The rotating part can be a rotating component such as a sleeve or a bearing.

[0052] Reference Figures 2 to 4 In a further embodiment of the present invention, a first connecting plate 430 is provided at each end of the locking rod 400. A second connecting plate 440 is mounted on the side of the first connecting plate 430 away from the locking rod 400. A mounting plate 441 is provided on the second connecting plate 440. The locking plate 420 and the mounting plate 441 are provided with corresponding holes for fasteners to connect and fix, thereby achieving the connection between the locking plate 420 and the locking rod 400, so that the locking plate 420 can move with the locking rod 400. The first connecting plate 430 and the second connecting plate 440 can be adjusted in distance and fixed, thereby achieving the position adjustment of the locking plate 420, thereby improving the applicability and practicality of the device. The position can be adjusted as needed to adapt to various scenarios.

[0053] Reference Figures 2 to 4 In a further embodiment of the present invention, the first connecting plate 430 and the second connecting plate 440 are provided with corresponding mounting holes and are penetrated by a screw 450, and two sets of nuts 460 are installed on the screw 450. The two sets of nuts 460 clamp and fix the first connecting plate 430 and the second connecting plate 440 respectively, thereby realizing the connection and fixation of the first connecting plate 430 and the second connecting plate 440, and the distance between the first connecting plate 430 and the second connecting plate 440 can be adjusted by adjusting the position of the nut 460 on the screw 450, so that the connection is stable and the adjustment is convenient.

[0054] Reference Figures 2 to 4 In a further embodiment of the present invention, a first clamping block 320 is fixedly provided at the bottom of the limit plate 310. The first clamping block 320 is mounted with a second clamping block 330 via fasteners. The first clamping block 320 and the second clamping block 330 are clamped and fixed to the corresponding main cutter vertical link 100 or ground cutter vertical link 200. That is, the first clamping block 320 and the second clamping block 330 on the left side are clamped and fixed to the main cutter vertical link 100, and the first clamping block 320 and the second clamping block 330 on the right side are clamped and fixed to the ground cutter vertical link 200, thereby allowing the limit plate 310 to rotate with the main cutter vertical link 100 or the ground cutter vertical link 200. Specifically, the first clamping block 320 and the second clamping block 330 both have arc grooves that fit with the main knife vertical link 100 or the ground knife vertical link 200. The first clamping block 320 and the second clamping block 330 are provided with corresponding holes for connection by bolts and nuts to clamp and fix the main knife vertical link 100 or the ground knife vertical link 200. The height position of the locking assembly 300 on the main knife vertical link 100 or the ground knife vertical link 200 can be adjusted as needed. When adjustment is required, only the nut needs to be loosened to adjust the height, and then the nut can be tightened after adjustment.

[0055] Reference Figures 2 to 4 In a further embodiment of the present invention, both the main cutter vertical link 100 and the ground cutter vertical link 200 are equipped with a limit assembly 600. The locking plate 420 is sandwiched between the limit plate 310 and the limit assembly 600 and can move within the gap between the limit plate 310 and the limit assembly 600. The limit assembly 600 restricts the upward movement of the locking plate 420, preventing the locking plate 420 from overturning, making the overall structure more stable. Specifically, the limit assembly 600 includes two clamping blocks 610, each with corresponding holes for connection and fixing via bolts and nuts. The height position of the limit assembly 600 can be adjusted as needed.

[0056] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An isolation switch locking device, characterized in that: include: The main knife vertical connecting rod (100) has a closing state and an opening state, and can be switched between the closing state and the opening state by rotating along its own axis; The ground knife vertical connecting rod (200) is spaced apart from the main knife vertical connecting rod (100) and has a closing state and an opening state. The closing state and the opening state can be switched by rotating along its own axis. Two locking assemblies (300) are respectively mounted on the main knife vertical link (100) and the ground knife vertical link (200) and can rotate along with the main knife vertical link (100) and the ground knife vertical link (200); A locking rod (400) is provided with locking structures (410) corresponding to the two locking assemblies (300) at both ends. The locking rod (400) can reciprocate along its own length direction so that the two locking structures (410) alternately engage with the corresponding locking assemblies (300) in a limited position. When the locking structures (410) engage with the corresponding locking assemblies (300), they can restrict the corresponding locking assemblies (300) from rotating synchronously. When the main knife vertical link (100) and the ground knife vertical link (200) are both in the open state, the main knife vertical link (100) and the ground knife vertical link (200) can be rotated to a closed state. When the main knife vertical link (100) or the ground knife vertical link (200) moves to the closed state, it can drive the locking rod (400) to move to a locking structure (410) and a locking component (300) on the ground knife vertical link (200) or the main knife vertical link (100) to limit the engagement.

2. The isolation switch locking device according to claim 1, characterized in that: It also includes two bearing assemblies (500) spaced apart along the length direction of the locking rod (400) and used for bearing the locking rod (400).

3. The isolation switch locking device according to claim 2, characterized in that: The bearing assembly (500) includes a vertical plate (510) and a bearing member (520), wherein the vertical plate (510) is provided with a first U-shaped groove (511) with an opening facing downward, and the bearing member (520) is provided with a second U-shaped groove (521) with an opening facing upward, and the bearing member (520) is connected to the vertical plate (510) so that the first U-shaped groove (511) and the second U-shaped groove (521) define a through hole (522) for the locking rod (400) to pass through, and the bearing member (520) is installed with a rolling member (530) that can rotate along its own axis, and the rotation axis of the rolling member (530) is perpendicular to the length direction of the locking rod (400), and the rolling member (530) is used to contact and support the locking rod (400).

4. The isolation switch locking device according to claim 3, characterized in that: The upper end of the vertical plate (510) is provided with a horizontal plate (540) extending toward the main knife vertical link (100) or the ground knife vertical link (200) on the corresponding side, and an auxiliary positioning block (550) is installed on the horizontal plate (540), and the auxiliary positioning block (550) has a positioning groove (551) for the corresponding main knife vertical link (100) or the ground knife vertical link (200) to be embedded.

5. The isolation switch locking device according to claim 1, characterized in that: The locking assembly (300) includes a limiting plate (310), the limiting plate (310) is fixedly mounted on the corresponding main knife vertical link (100) or ground knife vertical link (200), the limiting plate (310) is provided with an arc edge (311) and a notch (312) on its circumference, the notch (312) facing the arc edge (311) is a bevel edge (313) connected to the arc edge (311), when the notch (312) is aligned with the corresponding locking structure (410), the main knife vertical link corresponding to the notch (312) is locked. The rod (100) or the ground knife vertical link (200) is in an open state; the arc edge (311) corresponding to the main knife vertical link (100) or the ground knife vertical link (200) in the closed state is adjacent to the corresponding locking structure (410); when the arc edge (311) corresponding to the main knife vertical link (100) or the ground knife vertical link (200) is adjacent to the corresponding locking structure (410), the other locking structure (410) is engaged with the corresponding notch (312) of the ground knife vertical link (200) or the main knife vertical link (100).

6. The isolation switch locking device according to claim 5, characterized in that: The ends of both ends of the locking rod (400) are both installed with locking plates (420), and the locking plate (420) is provided with an open groove (421) extending along the length direction of the locking rod (400) for the main knife vertical connecting rod (100) or the ground knife vertical connecting rod (200) to pass through, and the locking structure (410) is installed on the side edge of the corresponding locking plate (420) away from the locking rod (400), and the locking structure (410) is a rotating part rotatably installed on the locking plate (420) along its own axis.

7. The isolation switch locking device according to claim 6, characterized in that: The ends of both ends of the locking rod (400) are each provided with a first connecting plate (430), a second connecting plate (440) is installed on the side of the first connecting plate (430) away from the locking rod (400), a mounting plate (441) is provided on the second connecting plate (440), the locking plate (420) and the mounting plate (441) are provided with corresponding holes for connection and fixation by fasteners, and the first connecting plate (430) and the second connecting plate (440) can be adjusted in distance and fixed.

8. The isolation switch locking device according to claim 7, characterized in that: The first connecting plate (430) and the second connecting plate (440) are provided with corresponding mounting holes and are penetrated by screw rods (450). Two groups of nuts (460) are installed on the screw rods (450). The two groups of nuts (460) respectively clamp and fix the first connecting plate (430) and the second connecting plate (440).

9. The isolation switch locking device according to claim 6, characterized in that: The limiting plate (310) is fixed with a first clamping block (320), and the first clamping block (320) is installed with a second clamping block (330) through a fastener. The first clamping block (320) and the second clamping block (330) are clamped and fixed to the corresponding main knife vertical connecting rod (100) or ground knife vertical connecting rod (200).

10. The isolation switch locking device according to claim 9, characterized in that: The main knife vertical connecting rod (100) and the ground knife vertical connecting rod (200) are both installed with a limiting assembly (600), and the locking plate (420) is clamped between the limiting disk (310) and the limiting assembly (600) and can move in the gap between the limiting disk (310) and the limiting assembly (600).

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