An operating mechanism of a direct-acting isolating switch

Abstract

The present invention discloses an operating mechanism of a direct-acting isolating switch, comprising a frame structure, an isolating operating shaft, a grounding operating shaft, an operating handle, an indicating block, a first limiting structure and a second limiting structure. By inserting the operating handle into the isolating operating shaft or the grounding operating shaft, the first limiting structure or the second limiting structure is driven to rotate to the movement path of the indicating block, so that when the operator rotates the isolating operating shaft or the grounding operating shaft to make the indicating block move and abut against the first limiting structure or the second limiting structure, it represents that the switch has been switched to the isolating position. The advantage of such a design is that the traditional single-axis three-position switching operation is split into two-axis switching operations respectively, and the first limiting structure and the second limiting structure are used to block the indicating block to remind the operator that the switch is switched into place, thereby realizing the precise positioning of the isolating position of the switch, and providing convenience for subsequent electric operation.

Description

Technical Field

[0001] The present invention relates to the technical field of isolating switches, and in particular to an operating mechanism of a direct-acting isolating switch. Background Art

[0002] The three-position switch is an electrical device used to switch the states of connection, isolation, and grounding. According to the movement mode of its contacts, the three-position switch can be generally divided into knife switch type, direct-acting type, etc. Due to its own characteristics, the direct-acting three-position switch is generally matched with a rotary-to-direct-acting operating mechanism. The direct-acting three-position switch usually has a closing position and a grounding position at both ends of the switch, and an isolation position in the middle. The operating mechanism of the existing direct-acting three-position switch generally uses a single operating shaft to control the moving contact of the switch to switch between the three positions.

[0003] The operating mechanism of the existing direct-acting three-position switch has the following problems when in use:

[0004] 1. When the switch is switched to the closing position or the grounding position, there will be obvious hand feedback to remind the operator to close the switch or ground it in place. However, when the switch is switched to the isolation position, there is no obvious hand feedback to remind the operator whether the operation is in place. The operator can only judge whether the switch is in place by the sign posted on the surface of the equipment by the manufacturer and the number of turns in the manual. It is impossible to accurately switch the position to the isolation position, which is prone to incomplete operation or over-operation;

[0005] 2. When the operator fails to operate properly or operates too much, the sensors installed on the three positions of the switch will not be able to detect the opening and closing status of the switch, so that when the switch is switched to electric operation, the electric operating mechanism cannot work normally and has to be switched back to manual operation for adjustment, which is troublesome, time-consuming and labor-intensive. Summary of the invention

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the problem that when the operating mechanism of the direct-acting three-position switch in the prior art switches to the isolation position, the operating mechanism cannot accurately switch the position to the isolation position due to the lack of operation feedback at the isolation position, and is prone to the problem of inadequate operation or over-operation. Thus, an operating mechanism of the direct-acting three-position switch is provided, which can accurately switch the position to the isolation position and has obvious position operation feedback, thereby avoiding the problem of inadequate operation or over-operation.

[0007] The present invention provides an operating mechanism of a direct-acting isolating switch, comprising:

[0008] The frame structure includes an isolating operating shaft and a grounding operating shaft which are rotatably arranged on the frame structure, and an operating handle which is arranged on the isolating operating shaft or the grounding operating shaft;

[0009] The indicating block is reciprocatably arranged on the frame structure, and forms a linkage with the isolation operating shaft and the grounding operating shaft through a transmission structure; when the isolation operating shaft performs a closing rotation or an isolation rotation under the drive of the operating handle, the indicating block is driven to move to the closing indicating position or the isolation indicating position along the reciprocating direction; when the grounding operating shaft performs a grounding rotation or an isolation rotation under the drive of the operating handle, the indicating block is driven to move to the grounding indicating position or the isolation indicating position along the reciprocating direction;

[0010] a first limiting structure, rotatably arranged on the frame structure and located on an insertion path of the operating handle into the isolation operating shaft, wherein the first limiting structure is rotated to a movement path of the indicating block under the push of the operating handle, so that the indicating block abuts against the first limiting structure when moving from a closing indicating position to an isolation indicating position, and automatically resets when the operating handle is separated from the isolation operating shaft;

[0011] The second limiting structure is rotatably arranged on the frame structure and is located on the insertion path of the operating handle into the grounding operating shaft. The second limiting structure is rotated to the movement path of the indicating block under the push of the operating handle, so that the indicating block abuts against the second limiting structure when it moves from the grounding indicating position to the isolation indicating position, and automatically resets when the operating handle is separated from the grounding operating shaft.

[0012] In the operating mechanism of the above-mentioned direct-acting isolating switch, the first limiting structure includes a first positioning pin arranged on the frame structure, an isolating crank arm rotatably arranged on the first positioning pin and driven by the operating handle, and a first torsion spring sleeved on the first positioning pin, and the first torsion spring drives the isolating crank arm to reset when the operating handle is separated from the isolating operating shaft.

[0013] In the operating mechanism of the above-mentioned direct-acting disconnector, the second limiting structure includes a second positioning pin arranged on the frame structure and staggered with respect to the first positioning pin, a grounding crank arm rotatably arranged on the second positioning pin and driven by the operating handle, and a second torsion spring sleeved on the second positioning pin, and the second torsion spring drives the grounding crank arm to reset when the operating handle is separated from the grounding operating shaft.

[0014] In the operating mechanism of the above-mentioned direct-acting disconnector, the isolation crank arm and the grounding crank arm respectively include an axial hole structure that is rotatably connected to the first positioning pin or the second positioning pin, and a driving part and a limiting part that are extended and arranged at an angle with the axial hole structure as the center, the driving part extends to the insertion path of the operating handle inserted into the isolation operating shaft or the grounding operating shaft, and the limiting part rotates to the moving path of the indicating block under the drive of the operating handle.

[0015] In the operating mechanism of the above-mentioned direct-acting disconnector, a limiting column is arranged on the limiting part, and the limiting column is movably fixed on the limiting part through an adjusting structure. When the limiting column on the isolating arm cooperates with the indicating block to abut against the indicating block, the indicating block is limited to move in the direction of the grounding indicating position; when the limiting column on the grounding arm cooperates with the indicating block to abut against the indicating block, the indicating block is limited to move in the direction of the closing indicating position.

[0016] In the operating mechanism of the above-mentioned direct-acting disconnector, the adjustment structure includes a strip groove extending along the length direction of the limiting portion and arranged on the limiting portion, a threaded portion arranged on the limiting column and passing through the strip groove, and a nut fastened with the threaded portion.

[0017] In the operating mechanism of the above-mentioned direct-acting disconnector, the frame structure includes two mounting plates arranged opposite to each other, and a fixing frame arranged between the two mounting plates, the first limiting structure and the second limiting structure are both arranged on the fixing frame, and the fixing frame is provided with an arc-shaped opening groove suitable for the limiting column to rotate through.

[0018] In the operating mechanism of the direct-acting disconnector, the transmission structure includes a transmission shaft that is positioned and rotatably arranged on the frame structure, and a gear assembly that is transmission-connected between the transmission shaft and the isolation operating shaft and the grounding operating shaft. The indicator block is reciprocatably arranged on the transmission shaft through a threaded structure, and the threaded structure includes an external thread arranged on the outer periphery of the transmission shaft, and a threaded hole arranged on the indicator block.

[0019] In the operating mechanism of the direct-acting disconnector, the frame structure is provided with a guide structure for guiding the sliding direction of the indicator block, and the guide structure includes two guide posts arranged on the frame structure parallel to the transmission shaft, and two guide holes arranged on the indicator block and through which the guide posts can penetrate.

[0020] In the operating mechanism of the above-mentioned direct-acting disconnector, the frame structure is further provided with a switch assembly for detecting that the indicator block moves to the closing, isolating, and grounding indication positions and sends an indication signal to the electric device. The switch assembly includes three groups of travel switches or position sensors respectively fixed in the frame structure corresponding to the closing indication position, isolating indication position, and grounding indication position of the indicator block. When the indicator block moves to the closing indication position, isolating indication position, and grounding indication position in sequence, the travel switches or position sensors at the corresponding positions are triggered.

[0021] The technical solution of the present invention has the following advantages over the prior art:

[0022] 1. The operating mechanism of the direct-acting isolating switch provided by the present invention, when the switch is switched from the closing position to the isolating position, the operator first inserts the operating handle into the isolating operating shaft, and when the operating handle is inserted, the first limit structure is driven to move to the motion path of the indicating block, and the operator then uses the operating handle to make the isolating operating shaft rotate in isolation, until the indicating block stops rotating after the first limit structure abuts against the indicating block, at which time the indicating block accurately stays in the isolating indicating position, that is, the switch is switched to the isolating position, and finally the operator pulls out the operating handle, and the first limit structure automatically resets and releases the abutment with the indicating block, and when the switch is switched between the isolating position and the grounding position, the operator The operator inserts the operating handle into the grounding operating shaft, so that the second limiting structure is driven by the operating handle to rotate on the motion path of the indicating block, so that the indicating block moves against the frame structure to the grounding indicating position when the grounding operating shaft rotates in grounding, and moves against the second limiting structure to the isolation indicating position when the grounding operating shaft rotates in isolation. The advantage of such a design is that the traditional single-axis three-position switching operation is split into two-axis switching operations, and the first limiting structure and the second limiting structure are used to block the indicating block to remind the operator to switch to the right position, thereby realizing the precise positioning of the switch isolation position and providing convenience for subsequent electric operation.

[0023] 2. In the operating mechanism of the direct-acting disconnector provided by the present invention, the isolating crank arm and the grounding crank arm are rotatably arranged on the first positioning pin and the second positioning pin respectively. Since the first positioning pin and the second positioning pin are also respectively sleeved with the first torsion spring and the second torsion spring, the first torsion spring and the second torsion spring respectively drive the isolating crank arm and the grounding crank arm to perform reset rotation.

[0024] 3. In the operating mechanism of the direct-acting isolating switch provided by the present invention, the driving part and the limiting part are arranged in a "7"-shaped structure to ensure that after the operating handle is inserted into the grounding operating shaft or the isolating operating shaft, the driving part only needs to rotate a small amplitude to move the limiting part to the movement path of the indicating block.

[0025] 4. The operating mechanism of the direct-acting isolating switch provided by the present invention, when installing the limit columns on the first limit structure and the second limit structure, first move the indicator block to the isolation indicator position, then insert the two operating handles into the grounding operating shaft and the isolation operating shaft respectively, so that the isolation crank arm and the grounding crank arm are simultaneously rotated to the movement path of the indicator block, then pass the threaded portion of the limit column through the strip groove, and make the limit columns on the grounding crank arm and the isolation crank arm abut against the two sides of the indicator block respectively, finally use the nut to cooperate with the threaded portion to tighten, so as to complete the installation of the two limit columns. The advantage of such installation is that when the indicator block abuts against the limit column, it means that the indicator block has been accurately moved to the isolation indicator position, the structure is simple, and the installation is reliable.

[0026] 5. The operating mechanism of the direct-acting isolating switch provided by the present invention is provided with an arc-shaped opening groove on the fixing frame, and the arc-shaped opening groove is located on the movement path of the two limit columns, providing a yielding function for the two to avoid the limit columns on the isolation crank arm and the grounding crank arm from colliding with the fixing frame when they rotate, thereby ensuring that the limit columns can be smoothly moved to the movement path of the indicator block.

[0027] 6. The operating mechanism of the direct-acting isolating switch provided by the present invention, the transmission shaft, the isolating operating shaft and the grounding operating shaft are transmitted through a gear assembly, and an external thread is provided on the surface of the transmission shaft and a threaded hole is provided on the indicator block, and the rotational motion of the gear assembly is converted into a linear motion that drives the indicator block to move axially along the transmission shaft by utilizing the cooperation of the threaded hole and the external thread. The structure is simple and the installation is convenient.

[0028] 7. The operating mechanism of the direct-acting isolating switch provided by the present invention prevents the problem of unilateral deflection of the indicating block during movement by arranging guide holes on both sides of the threaded hole and utilizing the sliding cooperation between the guide column on the frame structure and the guide hole.

[0029] 8. The operating mechanism of the direct-acting isolating switch provided by the present invention is configured with switch components on one side of the closing, isolating and grounding indication positions of the indicator block, respectively, so that when the indicator block moves to the closing indication position, the isolating indication position or the grounding indication position, the switch component at the corresponding position will be triggered, so that the electric device of the switch can quickly know the specific position of the moving contact of the switch, thereby ensuring that subsequent switching work can be achieved through electric operation, with a simple structure, convenient triggering and high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 A schematic diagram of the structure in which the operating mechanism of the direct-acting isolating switch provided by the present invention is installed on the isolating switch;

[0032] Figure 2 A schematic diagram of the structure of the operating mechanism of the direct-acting isolating switch provided by the present invention;

[0033] Figure 3 for Figure 2 A schematic structural diagram of the operating mechanism of the direct-acting disconnector shown in FIG.

[0034] Figure 4 for Figure 2 A top view of the operating mechanism shown;

[0035] Figure 5 for Figure 2 A top view of the operating handle of the operating mechanism shown is installed behind the isolating operating shaft;

[0036] Figure 6 for Figure 2 A bottom view of the operating mechanism shown;

[0037] Figure 7 for Figure 2 A bottom view of the operating mechanism shown with the operating handle installed behind the grounded operating shaft;

[0038] Figure 8 for Figure 2 The structural schematic diagram of the positioning slider shown;

[0039] Fig. 9 for Figure 2 The structural schematic diagram of the fixing frame and the mounting plate shown;

[0040] Description of reference numerals:

[0041] 1-frame structure; 11-isolation operating shaft; 12-grounding operating shaft; 13-operating handle; 14-mounting plate; 15-fixing frame; 16-arc opening slot; 17-switch assembly; 18-travel switch; 19-auxiliary switch;

[0042] 2-indicator block; 21-threaded hole;

[0043] 3-transmission structure; 31-transmission shaft;

[0044] 4-first limiting structure; 41-first positioning pin; 42-isolating crank arm; 43-first torsion spring; 44-driving part; 45-limiting part; 46-strip groove; 47-limiting column;

[0045] 5-second limiting structure; 51-second positioning pin; 52-grounding crank arm; 53-second torsion spring;

[0046] 6-gear assembly; 61-driven gear; 62-ground gear; 63-isolation gear; 64-driving gear;

[0047] 7-guide structure; 71-guide column; 72-guide hole. DETAILED DESCRIPTION

[0048] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0052] Example 1

[0053] The present embodiment is specifically described below in conjunction with the accompanying drawings:

[0054] The present invention provides Figure 1-9 An operating mechanism of a direct-acting isolating switch is shown, comprising:

[0055] The frame structure 1 includes an isolation operating shaft 11 and a grounding operating shaft 12 which are rotatably arranged on the frame structure 1, and an operating handle 13 which is arranged on the isolation operating shaft 11 or the grounding operating shaft 12;

[0056] The indicating block 2 is reciprocatingly arranged on the frame structure 1, and forms a linkage with the isolating operating shaft 11 and the grounding operating shaft 12 through the transmission structure 3; the indicating block 2 switches and moves between the closing indicating position, the opening indicating position and the grounding indicating position in turn corresponding to the closing, opening and grounding states of the isolating switch; when the isolating operating shaft 11 performs the closing rotation or the isolating rotation under the drive of the operating handle 13, the indicating block 2 is driven to move along the reciprocating direction to the closing indicating position or the isolating indicating position; when the grounding operating shaft 12 performs the grounding rotation or the isolating rotation under the drive of the operating handle 13, the indicating block 2 is driven to move along the reciprocating direction to the grounding indicating position or the isolating indicating position;

[0057] a first limiting structure 4, which is rotatably arranged on the frame structure 1 and is located on the insertion path of the operating handle 13 into the isolation operating shaft 11; the first limiting structure 4 is rotated to the movement path of the indicating block 2 under the push of the operating handle 13, so that the indicating block 2 abuts against the first limiting structure 4 when it moves from the closing indicating position to the isolation indicating position, and automatically resets when the operating handle 13 is separated from the isolation operating shaft 11;

[0058] The second limiting structure 5 is rotatably arranged on the frame structure 1 and is located on the insertion path of the operating handle 13 into the grounding operating shaft 12. The second limiting structure 5 is rotated to the movement path of the indicating block 2 under the push of the operating handle 13, so that the indicating block 2 abuts against the second limiting structure 5 when it moves from the grounding indicating position to the isolation indicating position, and automatically resets when the operating handle 13 is separated from the grounding operating shaft 12.

[0059] The above implementation is the core technical solution of this embodiment. When the switch is switched from the closing position to the isolation position, the operator first inserts the operating handle 13 into the isolation operating shaft 11. When the operating handle 13 is inserted, it drives the first limiting structure 4 to move to the motion path of the indicator block 2. The operator then uses the operating handle 13 to make the isolation operating shaft 11 rotate in isolation until the indicator block 2 stops rotating after the first limiting structure 4 abuts against the indicator block 2. At this time, the indicator block 2 stays accurately in the isolation indicating position, that is, the switch is switched to the isolation position. Finally, the operator pulls out the operating handle 13, and the first limiting structure 4 automatically resets and releases the abutment with the indicator block 2. When the switch is switched between the isolation position and the grounding position, the operator The operator inserts the operating handle 13 into the grounding operating shaft 12, so that the second limiting structure 5 is driven by the operating handle 13 to rotate on the motion path of the indicating block 2, so that the indicating block 2 is moved to the grounding indicating position against the frame structure 1 when the grounding operating shaft 12 is grounded and rotated, and is moved to the isolation indicating position against the second limiting structure 5 when the grounding operating shaft 12 is isolated and rotated. The advantage of such a design is that the traditional single-axis three-position switching operation is split into two-axis switching operations, and the first limiting structure 4 and the second limiting structure 5 are used to block the indicating block 2 to remind the operator to switch to the right position, thereby realizing the precise positioning of the switch isolation position and providing convenience for subsequent electric operation.

[0060] As a specific structural setting, the first limiting structure 4 includes a first positioning pin 41 arranged on the shell structure 1, and an isolation crank arm 42 rotatably arranged on the first positioning pin 41 and driven by the operating handle 13, and a first torsion spring 43 sleeved on the first positioning pin 41, and the two ends of the first torsion spring 43 respectively abut against the shell structure 1 and the isolation crank arm 42, so that the first torsion spring 43 is squeezed and deformed by the isolation crank arm 42 to store energy when the isolation crank arm 42 rotates, and elastically resets and drives the isolation crank arm 42 to reset and rotate when the operating handle 13 is separated from the isolation operating shaft 11.

[0061] like Figure 3 , Figure 6 and Figure 7As shown, the second limiting structure 5 includes a second positioning pin 51 arranged on the shell structure 1 and staggered with the first positioning pin 41, a grounding crank arm 52 rotatably arranged on the second positioning pin 51 and driven by the operating handle 13, and a second torsion spring 53 sleeved on the second positioning pin 51, the two ends of the second torsion spring 53 respectively abut against the shell structure 1 and the grounding crank arm 52, so that the second torsion spring 53 is squeezed and deformed by the grounding crank arm 52 to store energy when the grounding crank arm 52 rotates, and elastically resets and drives the grounding crank arm 52 to reset and rotate when the operating handle 13 is separated from the grounding operating shaft 12.

[0062] As a specific structural setting, the isolation crank arm 42 and the grounding crank arm 52 respectively include an axial hole structure that is rotatably connected to the first positioning pin 41 or the second positioning pin 51, and a driving part 44 and a limiting part 45 that are extended at an angle with the axial hole structure as the center, the driving part 44 extends to the insertion path of the operating handle 13 inserted into the isolation operating shaft 11 or the grounding operating shaft 12, and the limiting part 45 is driven by the operating handle 13 to rotate to the moving path of the indicating block 2. At the same time, the driving part 44 and the limiting part 45 are connected to form a "7"-shaped structural design, ensuring that after the operating handle 13 is inserted into the grounding operating shaft 12 or the isolation operating shaft 11, the driving part 44 only needs to rotate a small amplitude to move the limiting part 45 to the moving path of the indicating block 2.

[0063] like Figure 5 and Figure 7As shown, a limiting column 47 is provided on the limiting portion 45, and the limiting column 47 is movably fixed on the limiting portion 45 through an adjustment structure. When the isolating crank arm 42 cooperates with the indicating block 2 through the limiting column 47 thereon, the indicating block 2 is limited to move in the direction of the grounding indicating position, so as to ensure that when the operating handle 13 is inserted into the isolating operating shaft 11, the switch can only be controlled to switch between the closing position and the isolating position; when the grounding crank arm 52 cooperates with the indicating block 2 through the limiting column 47 thereon, the indicating block 2 is limited to move in the direction of the closing indicating position, so as to ensure that when the operating handle 13 is inserted into the grounding operating shaft 12, the switch can only be controlled to switch between the grounding position and the isolating position. It is further provided that the adjustment structure includes a strip groove 46 provided on the limiting portion 45 and extending along the length direction of the limiting portion 45, and a groove 46 provided on the limiting column 47. And pass through the threaded portion of the strip groove 46, and the nut that cooperates with the threaded portion to be tightened. When installing the limiting column 47 on the first limiting structure 4 and the second limiting structure 5, first move the indicating block 2 to the isolation indicating position, and then insert the two operating handles 13 into the grounding operating shaft 12 and the isolation operating shaft 11 respectively, so that the isolation crank arm 42 and the grounding crank arm 52 are simultaneously rotated to the movement path of the indicating block 2, and then the threaded portion of the limiting column 47 is passed through the strip groove 46, and the limiting columns 47 on the grounding crank arm 52 and the isolation crank arm 42 are respectively abutted against the two sides of the indicating block 2, and finally the nut is used to cooperate with the threaded portion to tighten, so as to complete the installation of the two limiting columns 47. The advantage of such installation is that when the indicating block 2 abuts against the limiting column 47, it means that the indicating block 2 has been accurately moved to the isolation indicating position, the structure is simple, and the installation is reliable.

[0064] Combine the following Figure 1-3 The specific configuration of the frame structure 1 is described in detail:

[0065] The shell frame structure 1 includes two mounting plates 14 arranged opposite to each other, and a fixing frame 15 arranged between the two mounting plates 14. The first limiting structure 4 and the second limiting structure 5 are both arranged on the fixing frame 15. The fixing frame 15 is provided with an arc-shaped opening groove 16 suitable for the limiting column 47 to rotate through. The arc-shaped opening groove 16 is located on the movement path of the two limiting columns 47, providing a yielding function for the two to avoid the limiting columns 47 on the isolation crank arm 42 and the grounding crank arm 52 from colliding with the fixing frame 15 when they rotate, thereby ensuring that the limiting column 47 can be smoothly moved to the movement path of the indicating block 2.

[0066] As a specific structural setting, the transmission structure 3 includes a transmission shaft 31 that is positioned and rotatably arranged on the frame structure 1, and a gear assembly 6 that is transmission-connected between the transmission shaft 31 and the isolation operating shaft 11 and the grounding operating shaft 12. The gear assembly 6 includes a driven gear 61 that is sleeved on the transmission shaft 31, and a grounding gear 62 and an isolation gear 63 that are respectively sleeved on the grounding operating shaft 12 and the isolation operating shaft 11, and a driving gear 64 that is arranged on the switch main shaft. The driven gear 61 is respectively meshed and connected with the isolation gear 63, the grounding gear 62 and the driving gear 64, so as to ensure that when the isolation operating shaft 11 and the grounding operating shaft 12 rotate, they can drive the transmission shaft 31 to rotate and drive the switch main shaft to rotate. In this embodiment, the gear assembly 6 is installed outside the mounting plate 14, and the frame structure 1 is further provided with a support plate. The gear assembly 6 is arranged between the mounting plate 14 and the support plate. The indicator block 2 can be reciprocated on the transmission shaft 31 through a threaded structure. The reciprocating direction of the indicator block 2 is the axial direction of the transmission shaft 31. The threaded structure includes an external thread arranged on the outer periphery of the transmission shaft 31, and a threaded hole 21 arranged on the indicator block 2. The rotational motion of the gear assembly 6 is converted into a linear motion that drives the indicator block 2 to move axially along the transmission shaft 31 by the cooperation of the threaded hole 21 and the external thread. The structure is simple and the installation is convenient.

[0067] like Figure 4 and Figure 8 As shown, the frame structure 1 is provided with a guide structure 7 for guiding the sliding direction of the indicator block 2, and the guide structure 7 includes two guide posts 71 arranged on the frame structure 1 in parallel with the transmission shaft 31, and two guide holes 72 arranged on the indicator block 2 and for the guide posts 71 to penetrate. The guide posts 71 and the guide holes 72 are slidably matched to prevent the indicator block 2 from unilaterally deflecting during the movement.

[0068] As a specific structural setting, the frame structure 1 is also provided with a switch assembly 17 for sending an indication signal to the electric device when detecting that the indicator block 2 moves to the closing, isolating, and grounding indication positions. The switch assembly 17 includes three groups of travel switches 18 or position sensors respectively fixed in the frame structure 1 corresponding to the closing indication position, isolating indication position, and grounding indication position of the indicator block 2. The position sensor senses the position of the indicator block 2 by infrared detection. In this embodiment, a mounting frame is provided between the two mounting plates 14, and the travel switch 18 is provided below the mounting frame. A travel switch 18 is provided above the mounting frame. There is an auxiliary switch 19 for controlling the secondary circuit of the switch. The limit switch 18 and the button of the auxiliary switch 19 are located on the movement path of the indicator block 2. At the same time, a guide slope for pressing with the button is provided on the side wall of the indicator block 2. When the indicator block 2 moves to the closing indication position, the isolation indication position and the grounding indication position in sequence, the limit switch 18 and the auxiliary switch 19 at the corresponding position will be triggered simultaneously through the guide slope, so that the limit switch 18 sends a position signal to the electric device of the switch and the secondary circuit of the switch is connected, so that the electric device can quickly know the specific position of the switch, thereby ensuring that the subsequent switching work can be achieved through electric operation. The structure is simple, the triggering is convenient, and the safety is high.

[0069] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the protection scope of the invention.

Claims

1. An operating mechanism for a direct-acting isolating switch, Features ,include: A frame structure (1), comprising a means for rotating an isolation operating shaft (11) and a grounding operating shaft (12) arranged on the frame structure (1), and a means for disassembling an operating handle (13) arranged on the isolation operating shaft (11) or the grounding operating shaft (12); The indicating block (2) is arranged on the frame structure (1) so as to be reciprocatingly movable, and forms a linkage with the isolation operating shaft (11) and the grounding operating shaft (12) through a transmission structure (3); when the isolation operating shaft (11) is driven by the operating handle (13) to perform a closing rotation or an isolation rotation, it drives the indicating block (2) to move along the reciprocating direction to a closing indicating position or an isolation indicating position; when the grounding operating shaft (12) is driven by the operating handle (13) to perform a grounding rotation or an isolation rotation, it drives the indicating block (2) to move along the reciprocating direction to a grounding indicating position or an isolation indicating position; A first limiting structure (4) is rotatably arranged on the frame structure (1) and is located on an insertion path of the operating handle (13) into the isolation operating shaft (11); the first limiting structure (4) is rotated to the movement path of the indicating block (2) under the push of the operating handle (13), so that the indicating block (2) abuts against the first limiting structure (4) when it moves from the closing indicating position to the isolation indicating position, and automatically resets when the operating handle (13) is separated from the isolation operating shaft (11); A second limiting structure (5) is rotatably arranged on the frame structure (1) and is located on an insertion path of the operating handle (13) into the grounding operating shaft (12); the second limiting structure (5) is rotated to the movement path of the indicating block (2) under the push of the operating handle (13), so that the indicating block (2) abuts against the second limiting structure (5) when it moves from the grounding indicating position to the isolation indicating position, and automatically resets when the operating handle (13) is separated from the grounding operating shaft (12); The transmission structure (3) comprises a transmission shaft (31) which is arranged on the frame structure (1) for positioning and rotation, and a gear assembly (6) which is transmission-connected between the transmission shaft (31) and the isolation operation shaft (11) and the grounding operation shaft (12); the indicator block (2) is arranged on the transmission shaft (31) for reciprocating motion via a threaded structure; the threaded structure comprises an external thread arranged on the outer periphery of the transmission shaft (31), and a threaded hole (21) arranged on the indicator block (2); The frame structure (1) is further provided with a switch assembly (17) for sending an indication signal to the electric device when detecting that the indicating block (2) moves to the closing, isolating and grounding indication positions; the switch assembly (17) comprises three groups of travel switches (18) or position sensors respectively fixed in the frame structure (1) corresponding to the closing indication position, isolating indication position and grounding indication position of the indicating block (2); when the indicating block (2) moves to the closing indication position, isolating indication position and grounding indication position in sequence, the travel switches (18) or position sensors at the corresponding positions are triggered.

2. The operating mechanism of the direct-acting disconnector according to claim 1, Features The first limiting structure (4) comprises a first positioning pin (41) arranged on the frame structure (1), an isolation crank arm (42) rotatably arranged on the first positioning pin (41) and driven by the operating handle (13), and a first torsion spring (43) sleeved on the first positioning pin (41), wherein the first torsion spring (43) drives the isolation crank arm (42) to reset when the operating handle (13) is separated from the isolation operating shaft (11).

3. The operating mechanism of the direct-acting disconnector according to claim 2, Features The second limiting structure (5) comprises a second positioning pin (51) arranged on the frame structure (1) and staggered with respect to the first positioning pin (41) in an upper and lower manner, a grounding crank arm (52) rotatably arranged on the second positioning pin (51) and driven by the operating handle (13), and a second torsion spring (53) sleeved on the second positioning pin (51), wherein the second torsion spring (53) drives the grounding crank arm (52) to reset when the operating handle (13) is separated from the grounding operating shaft (12).

4. The operating mechanism of the direct-acting disconnector according to claim 3, Features The isolation crank arm (42) and the grounding crank arm (52) respectively comprise an axial hole structure rotatably connected to the first positioning pin (41) or the second positioning pin (51), and a driving portion (44) and a limiting portion (45) extending and arranged at an angle with the axial hole structure as the center; the driving portion (44) extends to an insertion path of the operating handle (13) for inserting into the isolation operating shaft (11) or the grounding operating shaft (12); and the limiting portion (45) rotates to a moving path of the indicating block (2) under the drive of the operating handle (13).

5. The operating mechanism of the direct-acting disconnector according to claim 4, Features The limiting portion (45) is provided with a limiting column (47), and the limiting column (47) is movably fixed to the limiting portion (45) through an adjustment structure; when the isolating crank arm (42) cooperates with the indicating block (2) through the limiting column (47) thereon, the indicating block (2) is limited to move in the direction of the grounding indicating position; when the grounding crank arm (52) cooperates with the indicating block (2) through the limiting column (47) thereon, the indicating block (2) is limited to move in the direction of the closing indicating position.

6. The operating mechanism of the direct-acting disconnector according to claim 5, Features The adjustment structure comprises a strip groove (46) extending along the length direction of the limiting portion (45) and arranged on the limiting portion (45), a threaded portion arranged on the limiting column (47) and passing through the strip groove (46), and a nut fastened in cooperation with the threaded portion.

7. The operating mechanism of the direct-acting disconnector according to claim 5 or 6, Features The frame structure (1) comprises two mounting plates (14) arranged opposite to each other, and a fixing frame (15) arranged between the two mounting plates (14); the first limiting structure (4) and the second limiting structure (5) are both arranged on the fixing frame (15); and the fixing frame (15) is provided with an arc-shaped opening groove (16) suitable for the limiting column (47) to rotate through.

8. The operating mechanism of the direct-acting disconnector according to claim 7, Features The frame structure (1) is provided with a guide structure (7) for guiding the sliding direction of the indicator block (2); the guide structure (7) comprises two guide posts (71) arranged on the frame structure (1) in parallel with the transmission shaft (31), and two guide holes (72) arranged on the indicator block (2) and into which the guide posts (71) can penetrate.

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