Switch tripping structure, isolating switch operating mechanism and isolating switch

Abstract

The utility model discloses a switch tripping structure, an isolating switch operating mechanism and an isolating switch, and belongs to the technical field of isolating switches. The switch tripping structure comprises a shell, a main shaft, a linkage plate, a tripping arm and a tripping assembly. The linkage plate is sleeved on the main shaft, the coupling part of the linkage plate is buckled with the first bulge of the tripping arm in a limiting manner, and the abutting part pushes the auxiliary tripping plate to compress the first elastic piece to realize closing and locking; and during opening, the electromagnetic driving part of the telescopic tripping piece pushes the tripping arm to deviate to release the limit, and the reset torsion spring drives the linkage plate to quickly reset. The tripping assembly adopts a multi-elastic-piece collaborative design, a reset torsion spring and a compression spring are matched to ensure action reliability, and a push arm of a telescopic tripping piece and a receding groove structure achieve accurate triggering. The isolating switch operating mechanism integrates a handle and a tripping structure, the contact unit is provided with an arc extinguishing device, and high-speed separation and arc suppression are achieved during opening. The tripping device has the advantages of compact structure, sensitive tripping, high fatigue resistance and the like, and is suitable for a high-reliability power system.

Description

Technical Field

[0001] This invention relates to the field of disconnecting switch technology, specifically to a switch tripping structure, a disconnecting switch operating mechanism, and a disconnecting switch. Background Technology

[0002] In power systems, disconnecting switches are critical safety devices, and the reliability of their tripping mechanisms directly affects the safety and efficiency of circuit opening and closing. Existing disconnecting switch tripping structures generally suffer from the following problems:

[0003] 1. The top cover has many degrees of freedom and is spring-loaded before assembly, making it easy for the position to be misaligned and for it to be prone to misalignment and collision when the top cover is installed.

[0004] Second, the reset spring's reset force was not calculated and calibrated, the rear seat wall thickness is small, and space is limited.

[0005] Furthermore, existing tripping assemblies are complex in structure, require high assembly precision, and have high maintenance costs. To address these issues, there is an urgent need for a compact, sensitive, and durable switch tripping structure to meet the demands of high-reliability power equipment. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] To address the aforementioned problems, this invention proposes a switch tripping structure, an isolating switch operating mechanism, and an isolating switch, aiming to solve the problems of complex structure, high assembly precision requirements, and inaccurate control of tripping force in existing tripping components.

[0008] (II) Technical Solution

[0009] The present invention provides a switch tripping structure, the switch tripping structure comprising:

[0010] case;

[0011] The main shaft is rotatably mounted inside the housing;

[0012] A linkage plate is sleeved on the main shaft and can move with the movement of the main shaft. The linkage plate is provided with a coupling part and an abutment part.

[0013] A tripping arm, one end of which is rotatably disposed inside the housing, is located on one side of the linkage plate, and has a first protrusion on the tripping arm that cooperates with the coupling part;

[0014] The tripping assembly is movably disposed within the housing and includes a telescopic tripping member and an auxiliary tripping plate. The auxiliary tripping plate is provided with a second protrusion that cooperates with the abutment portion. One end of the tripping plate is provided with a first elastic member, which abuts against the inner sidewall of the housing.

[0015] When the switch is closed, the linkage plate rotates, causing the abutment part to contact the second protrusion and push it to compress the first elastic member. After the switch is closed, the coupling part is locked and engaged with the first protrusion.

[0016] When the switch is opened, the telescopic release member is driven to push the release arm to deflect, thereby releasing the limit between the release arm and the linkage plate.

[0017] In this utility model, a reset torsion spring is also sleeved on the main shaft, and a groove is provided on the linkage plate to connect with one end of the reset torsion spring. When the linkage plate rotates with the main shaft, it can drive the reset torsion spring to move.

[0018] When the switch is opened, the torsion spring can drive the linkage plate to disengage and reset.

[0019] In this utility model, the telescopic release member includes a driving part and a telescopic part. The telescopic part includes a telescopic arm and a contact block that cooperates with the release arm. The contact block is provided with a push arm and a clearance groove.

[0020] The auxiliary release plate has a bent portion that cooperates with the first elastic element at one end near the relief groove, and the bent portion is disposed in the relief groove.

[0021] In this invention, a second elastic element is sleeved on the telescopic arm, and the release arm has an end head that cooperates with the push arm, the end head being located on the movement path of the telescopic part.

[0022] In this utility model, a connecting shaft is provided inside the housing, the connecting shaft is located on the side of the linkage plate near the first elastic element, and one end of the release arm has a through hole that fits with the connecting shaft.

[0023] The release arm has a limiting part on the side near the end head, and a third elastic element is also provided at the limiting part. One end of the third elastic element abuts against the housing, and the other end abuts against the third elastic element.

[0024] In this invention, the first elastic element and the third elastic element are arranged parallel to each other, and both the first elastic element and the third elastic element are located on the same side of the housing.

[0025] In this utility model, the telescopic release element is an excitation release device, and the first elastic element, the second elastic element, and the third elastic element are all compression springs.

[0026] Another disconnector switch operating mechanism of this utility model is characterized in that it includes a handle and the switch tripping structure described in the above technical solution, wherein the handle is mounted on the main shaft.

[0027] Another disconnecting switch of this utility model includes the disconnecting switch operating mechanism and contact unit described in the above technical solution. The contact unit is used to connect to external lines, and the contact unit has a contact mechanism and an arc extinguishing device.

[0028] (III) Beneficial Effects

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] (1) In this invention, the trip arm and the auxiliary trip plate interact with each other during the tripping phase or the tripping start stroke, increasing the tripping start force and reducing the final tripping impact force.

[0031] (2) In this invention, the three-point engagement design of the linkage plate coupling part and the first protrusion of the trip arm, combined with the elastic pre-compression structure of the auxiliary trip plate, ensures that the mechanical locking force is evenly distributed when closing, effectively suppressing vibration; when opening, the electromagnetic drive telescopic tripping part can release the limit within a millisecond response time, with high consistency of action. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the overall structure of the switch tripping mechanism;

[0034] Figure 2 This is a schematic diagram of the three-dimensional structure of the linkage plate;

[0035] Figure 3 This is a three-dimensional structural diagram of the trip arm;

[0036] Figure 4 A schematic diagram of the connection structure between the telescopic release element and the auxiliary release plate;

[0037] Figure 5 This is a three-dimensional structural diagram of the switch tripping mechanism;

[0038] Figure 6 This is a schematic diagram of the closing structure of the switch tripping mechanism;

[0039] Figure 7 This is a schematic diagram of the tripping structure of the switch.

[0040] Figure 8 This is a three-dimensional structural diagram of the operating mechanism of the disconnector switch.

[0041] 10. Handle; 20. Housing; 40. Linkage plate; 401. Coupling part; 402. Contact part; 403. Groove; 50. Main shaft; 60. Tripping arm; 601. Third elastic element; 602. End head; 603. First protrusion; 604. Limiting part; 605. Through hole; 70. Telescopic tripping element; 71. Drive part; 72. Second elastic element; 73. Telescopic arm; 731. Push arm; 732. Relief groove; 80. Reset torsion spring; 90. Auxiliary tripping plate; 91. Second protrusion; 92. Bending part. Detailed Implementation

[0042] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of this disclosure may have fewer components, other components not shown in the drawings, different components, components arranged differently, or components with different connections, etc. Furthermore, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0043] Unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, “an” or “a” and similar terms do not necessarily indicate a quantity limitation. Terms such as “comprising,” “including,” or “having” mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as “connected” or “connected” are not limited to the physical or mechanical connection or connection shown in the drawings, but can include equivalent connections or connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” “right,” “horizontal,” and “vertical” are used only to indicate relative positional relationships, which may change accordingly when the absolute position of the described object changes.

[0044] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Example 1

[0046] like Figures 1-8The present invention discloses a disconnecting switch operating mechanism, which includes a switch tripping structure. This tripping structure can be applied to similar rotary opening and closing switch structures, and the disconnecting switch operating mechanism can also be used in combinations of different disconnecting switches to solve the problems of complex structure, high assembly precision requirements, and inaccurate control of tripping force of existing tripping components.

[0047] Specifically, such as Figure 1 The disconnect switch shown mainly includes a main shaft 50, a trip arm 60, a linkage plate 40, a trip assembly, and a housing 20 that houses these components. The main shaft 50 is rotatably mounted within the housing 20, and the linkage plate 40 is sleeved on the main shaft 50. To facilitate the reset of the linkage plate 40, a reset torsion spring 80 is also sleeved on the main shaft 50. One end of the reset torsion spring 80 is connected to the linkage plate 40, and the other end is limitedly connected to the housing 20 or other relatively stationary components, thereby enabling the reset torsion spring 80 to store energy when the linkage plate 40 moves with the main shaft 50.

[0048] Reference Figure 2 The linkage plate 40 has a central hole for easy assembly with the spindle 50. After assembly, the linkage plate 40 can be fixed using a connecting piece, allowing it to rotate with the spindle 50. The linkage plate 40 also has a coupling part 401, an abutment part, and a groove 403 on its side. In this embodiment, the groove 403 is located between the coupling part 401 and the abutment part. The coupling part 401 engages with the release arm 60, the abutment part engages with the auxiliary release plate 90 in the top column release assembly, and the groove 403 engages with one end of the reset torsion spring 80, thereby actuating it.

[0049] Reference Figure 1 , Figure 3 A connecting shaft is provided on the upper left side inside the housing 20, and the upper end of the trip arm 60 is provided with a through hole 605 to rotatably connect to it, that is, the trip arm 60 can rotate clockwise and counterclockwise at a certain angle within the housing 20. A first protrusion 603 is provided on the right side of the middle part of the trip arm 60 to cooperate with the coupling part 401, and a vertically downward bent end head 602 is provided at the lower end. The function of this end head 602 is to cooperate with the tripping assembly; during tripping, the tripping assembly pushes the end head 602, thereby causing the trip arm 60 to disengage from the linkage plate 40.

[0050] Specifically, a limiting portion 604 is provided between the first protrusion 603 and the end head 602. In this embodiment, the limiting portion 604 and the first protrusion 603 are located on the same side, that is, both are located on the right side of the trip arm 60. The end head 602, the limiting portion 604, and the trip arm 60 are all integral structures, and all are formed by bending downwards at 90°. A third elastic member 601 is also provided at the limiting portion 604. One end of the third elastic member 601 abuts against the left side wall of the housing 20, and the other end abuts against the limiting portion 604. In this embodiment, the third elastic member 601 is a compression spring.

[0051] Reference Figure 1 , Figure 4 As shown, the tripping assembly includes a telescopic tripping component and an auxiliary tripping plate 90. The auxiliary tripping plate 90 and the tripping arm 60 are both L-shaped. The auxiliary tripping plate 90 has a bent portion 92 at one end near the tripping arm 60 (left end) that cooperates with a first elastic element. A first elastic element is also provided between the bent portion 92 and the right side wall of the housing 20. One end of the first elastic element abuts against the right side wall of the housing 20, and the other end abuts against the bent portion 92. When the linkage plate 40 rotates, causing the auxiliary tripping plate 90 to move forward, it compresses the first elastic element to store energy.

[0052] In this embodiment, the telescopic tripping assembly consists of a drive unit 71 and a telescopic unit. The telescopic unit includes a telescopic arm 73 and a contact block that cooperates with the tripping arm 60. The contact block is provided with a push arm 731 and a clearance groove 732. The telescopic unit can extend and retract under the excitation of the drive unit 71, or the telescopic assembly can be retracted by activating the drive unit 71. The telescopic assembly has the function of extending by sleeved with a second elastic element 72 on the telescopic arm 73. Of course, the extension force of the telescopic arm 73 can also be increased by adding a second elastic element 72, depending on the function of the drive unit 71. In this application, the telescopic tripping assembly adopts an excitation trip unit.

[0053] Reference Figure 4 , Figure 5 There are two push arms 731, which are arranged parallel to each other. A relief groove 732 for accommodating the bent portion 92 is formed between the two push arms 731. In this embodiment, the auxiliary tripping plate 90 is located above the tripping assembly, and the bent portion 92 is located in the relief groove 732.

[0054] Reference Figures 6-7 When the switch is closed, the linkage plate 40 rotates, causing the abutment part to contact the second protrusion 91 and push it to compress the first elastic member. After the switch is closed, the coupling part 401 is locked and engaged with the first protrusion 603.

[0055] When the switch is opened, the telescopic release member 70 is driven to push the release arm 60 to deflect, thereby releasing the limit between the release arm 60 and the linkage plate 40.

[0056] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the inventive concept should fall within the protection scope of the present invention. All technical contents for which protection is sought in this invention are fully described in the claims.

Claims

1. A switch trip structure, characterized by, The switch tripping structure comprises: a housing; a main shaft rotatably arranged in the housing; a linkage plate sleeved on the main shaft and movable with the main shaft, the linkage plate being provided with a coupling portion and an abutting portion; a tripping arm having one end rotatably arranged in the housing, the tripping arm being located at one side of the linkage plate, and the tripping arm having a first protrusion matched with the coupling portion; a tripping assembly movably arranged in the housing, the tripping assembly comprising a telescopic tripping member and an auxiliary tripping plate, the auxiliary tripping plate being provided with a second protrusion matched with the abutting portion, and the tripping plate having one end provided with a first elastic member abutting against an inner side wall of the housing; when the switch is closed, the linkage plate rotates, so that the abutting portion contacts the second protrusion and pushes the second protrusion to compress the first elastic member, and after the switch is closed, the coupling portion is limited and buckled with the first protrusion; when the switch is opened, the telescopic tripping member is driven to push the tripping arm to deviate, so as to release the limitation between the tripping arm and the linkage plate.

2. The switch trip structure of claim 1, wherein The main shaft is further sleeved with a reset torsional spring, the linkage plate is provided with a groove connected with one end of the reset torsional spring, and the linkage plate can drive the reset torsional spring to move when the linkage plate rotates with the main shaft; when the switch is opened, the torsional spring can drive the linkage plate to reset.

3. The switch trip structure according to claim 1 or 2, characterized in that, The telescopic tripping member comprises a driving portion and a telescopic portion, the telescopic portion comprising a telescopic arm and a contact block matched with the tripping arm, the contact block being provided with a pushing arm and a clearance slot; the auxiliary tripping plate is provided with a bent portion matched with the first elastic member at one end close to the clearance slot, and the bent portion is arranged in the clearance slot.

4. The switch trip structure of claim 3, wherein The telescopic arm is sleeved with a second elastic member, the tripping arm has an end portion matched with the pushing arm, and the end portion is located on a movable path of the telescopic portion.

5. The switch trip structure of claim 4, wherein The housing is provided with a connecting shaft located at one side of the linkage plate close to the first elastic member, and the tripping arm has a through hole sleeved with the connecting shaft at one end; the tripping arm is provided with a limiting portion at one side close to the end portion, and the limiting portion is further provided with a third elastic member, one end of the third elastic member abutting against the housing and the other end abutting against the third elastic member.

6. The switch trip structure of claim 5, wherein The first elastic member and the third elastic member are arranged in parallel, and the first elastic member and the third elastic member are located on the same side of the housing.

7. The switch trip structure of claim 6, wherein The telescopic tripping member is an excitation tripping device, and the first elastic member, the second elastic member and the third elastic member are compression springs.

8. A disconnector operating mechanism, characterized in that The handle and the switch tripping structure of any one of claims 1-7 are included, and the handle is sleeved on the main shaft.

9. A disconnector, characterized in that The isolator operating mechanism of claim 8 and the contact unit are included, the contact unit is used for connecting external lines, and the contact unit has a contact mechanism and an arc extinguishing device.

Images