A switch operating mechanism and a switch electrical apparatus

Abstract

The application relates to a switch operating mechanism and a switch electrical equipment, wherein the switch electrical equipment comprises the switch operating mechanism, an auxiliary switch is mounted on a frame of the switch operating mechanism, a driving shaft is rotatably arranged on the frame, an auxiliary switch driving cam is arranged on the driving shaft, a cam groove is arranged on the auxiliary switch driving cam, a cam transmission member is swingably arranged on the frame, a first transmission pin is arranged on the cam transmission member, the first transmission pin extends into the cam groove and is matched with the cam groove, an auxiliary switch transmission member is stoppably arranged on an auxiliary switch rotating shaft, a second transmission pin is arranged on one of the auxiliary switch transmission member and the cam transmission member, and a transmission long hole is arranged on the other one, when the cam transmission member swings, the auxiliary switch transmission member is swung through cooperation of the second transmission pin and the transmission long hole, and then the auxiliary switch rotating shaft is rotated, a micro switch is mounted on the frame, and a micro switch triggering structure is arranged on the driving shaft; the transmission structure has small friction loss in the transmission process, high motion precision and reliable use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power switch equipment, in particular to a contact driving mechanism, and specifically to a switch operating mechanism and a switch electrical equipment. BACKGROUND

[0002] The auxiliary switch is an important component in the high-voltage switch operating system, which is mainly used in various switch electrical equipment such as disconnectors, circuit breakers, grounding switches, etc., to realize the indication of control circuit switching, signal control and electrical interlocking, etc. The auxiliary switch is provided with a closing indication circuit and a tripping indication circuit for indicating closing and tripping respectively. Whether the auxiliary switch can accurately switch the circuit will directly affect whether the entire high-voltage switch equipment can operate efficiently, reliably and safely.

[0003] The existing auxiliary switch switching mode is mainly to realize the transmission between the main shaft of the operating mechanism and the auxiliary switch rotating shaft through a four-bar linkage mechanism. For example, the patent document with the authorization announcement number CN213752408U discloses an adjustable auxiliary switch switching structure, the action shaft drives the first connecting bent plate through the adjusting crank arm, the first connecting bent plate drives the switch crank arm through the connecting assembly and the second connecting bent plate, and the switch crank arm drives the square rotating shaft of the auxiliary switch to rotate. For example, the patent document with the authorization announcement number CN214428580U discloses a circuit breaker operating mechanism with an auxiliary switch, the main shaft drives the rotating arm to rotate, the rotating arm drives the first connecting rod through the transmission rod, and the first connecting rod drives the auxiliary switch to act.

[0004] However, for the current four-bar linkage transmission mechanism, the kinematic pair is a low pair, and there is a gap in the low pair, which will cause errors and transmission losses in the movement process. The errors between the parts are continuously accumulated, which will eventually cause the auxiliary switch rotation angle to not reach the expected design angle. When the mechanism error reaches the auxiliary switch rotation angle driven by the mechanism, which is less than the auxiliary switch rotation angle, the entire circuit cannot be switched, which reduces the reliability of the auxiliary switch and affects the normal operation of the entire product. At the same time, certain errors will occur during the assembly of the connecting rod, and the installation precision is low, so that the auxiliary switch rotating shaft will be subjected to a certain impact vibration during the movement process, which reduces the stability of the auxiliary switch during the switching of the circuit. SUMMARY

[0005] The purpose of the present application is to provide a switch operating mechanism to solve the problem of unreliable use of the existing four-bar linkage auxiliary switch circuit switching structure. The purpose of the present application is also to provide a switch electrical equipment to solve the problem of unreliable use of the existing four-bar linkage auxiliary switch circuit switching structure.

[0006] The technical scheme of the switch operating mechanism of the present application is:

[0007] The utility model provides a kind of switch operating mechanism, including frame, auxiliary switch is mounted on frame, auxiliary switch is used to provide the signal of operating mechanism opening operation and closing operation, auxiliary switch has auxiliary switch pivot, driving shaft is rotatably equipped on frame, auxiliary switch driving cam is rotatably equipped on driving shaft, cam groove is equipped on auxiliary switch driving cam, cam transmission member is swingably equipped on frame, the swing axis of cam transmission member is parallel with the rotation axis of auxiliary switch driving cam, first transmission pin is equipped on cam transmission member along its swing axis direction, first transmission pin is inserted into the cam groove and is matched with cam groove, to drive cam transmission member swing when auxiliary switch driving cam rotates, auxiliary switch transmission member is rotatably equipped on auxiliary switch pivot, second transmission pin is equipped on one of cam transmission member and auxiliary switch transmission member, and transmission long hole is equipped on the other, to drive auxiliary switch transmission member swing when cam transmission member swings, in turn drive auxiliary switch pivot rotates, microswitch is also mounted on frame, microswitch is used to provide the signal of operating mechanism opening operation and closing operation, microswitch trigger structure is also equipped on driving shaft for triggering microswitch, and microswitch trigger structure is arranged with auxiliary switch driving cam in driving shaft axial direction.

[0008] Beneficial effects: by setting auxiliary switch driving cam drives cam transmission member swing, cam transmission member swing drives auxiliary switch transmission member rotate, in turn drive auxiliary switch pivot rotates, realize auxiliary switch internal circuit switching, in the whole transmission structure, the connection between auxiliary switch driving cam and cam transmission member, cam transmission member and auxiliary switch transmission member is high pair, the friction of connection site is smaller, can reduce the friction loss in transmission process, compared with the existing four-bar linkage transmission mechanism, the motion pair is low pair, reduces transmission loss, overall motion precision is high, guarantees the rotation angle of auxiliary switch pivot, improves the use reliability of auxiliary switch, so that product operation is more safe and stable, and, by setting auxiliary switch and microswitch simultaneously, can utilize auxiliary switch internal circuit switching and output signal to indicating system to indicate opening and closing state, utilize microswitch to control the opening and closing circuit of switch operating mechanism to control opening and closing operation, or utilize auxiliary switch and microswitch to form position indication "double confirmation", auxiliary switch and microswitch all output signal to signal system, when any kind of signal is received by signal system, can correspond to indicate correct opening and closing state, avoid affecting the judgment of opening and closing state due to the failure of one kind of switch, avoid misoperation, improve the use reliability of switch operating mechanism, simultaneously, microswitch trigger structure is arranged with auxiliary switch driving cam in driving shaft axial direction, compact structure, improve space utilization.

[0009] Further, the cam groove extends along the circumference of the auxiliary switch driving cam, and the cam groove comprises a constant-diameter section, a closing transmission section and an opening transmission section, the constant-diameter section is located between the closing transmission section and the opening transmission section in the extension direction of the cam groove, the closing transmission section is used for driving the cam transmission piece to swing when the switch operating mechanism performs closing operation, and the opening transmission section is used for driving the cam transmission piece to swing when the switch operating mechanism performs opening operation.

[0010] Beneficial effects: the cam groove comprises the constant-diameter section, the closing transmission section and the opening transmission section, the swinging of the cam transmission piece is realized, and the machining is facilitated.

[0011] Further, the rack is provided with a swinging shaft, one end of the cam transmission piece in the length direction of the cam transmission piece is swingably assembled on the swinging shaft, the second transmission pin is located at the end of the cam transmission piece away from the swinging shaft, and the first transmission pin is located between the second transmission pin and the swinging shaft.

[0012] Beneficial effects: by setting the position of the first transmission pin between the swinging shaft and the second transmission pin, when the auxiliary switch driving cam drives the cam transmission piece to swing through the intermediate first transmission pin, the second transmission pin at the far end can obtain a larger stroke, so that the rotation angle requirement of the auxiliary switch is facilitated to be met, and the size of the auxiliary switch driving cam is reduced.

[0013] Further, the second transmission pin is arranged on the cam transmission piece, and the transmission long hole is arranged on the auxiliary switch transmission piece.

[0014] Beneficial effects: the size of the cam transmission piece is reduced, and the arrangement space is saved.

[0015] Further, the cam transmission piece is a cam transmission connecting plate, the cam transmission connecting plate is provided with an avoiding hole, the auxiliary switch rotating shaft extends into the avoiding hole, and the avoiding hole is used for avoiding the auxiliary switch rotating shaft in the swinging process of the cam transmission connecting plate.

[0016] Beneficial effects: by setting the cam transmission piece as a plate structure, the avoiding hole is conveniently opened, space is saved, and by avoiding the auxiliary switch rotating shaft through the avoiding hole, the axial arrangement space is saved and the original structure of the auxiliary switch does not need to be changed.

[0017] Further, in the length direction of the cam transmission piece, the driving shaft is located between the swinging shaft and the auxiliary switch rotating shaft.

[0018] Beneficial effects: the driving shaft is used to set the transmission structure on the circumferential side space, and the structure is compact.

[0019] Further, the cam transmission piece and the micro switch triggering structure are located on the same side in the axial direction of the auxiliary switch driving cam.

[0020] Beneficial effect: facilitate the arrangement of micro switch and auxiliary switch.

[0021] Further, the micro switch and the auxiliary switch are located on the two sides of the driving shaft in the radial direction.

[0022] Beneficial effect: make full use of the radial space of the driving shaft, compact structure.

[0023] Further, the micro switch trigger structure comprises a micro switch driving cam assembled on the driving shaft in a rotation-stopping manner, the micro switch driving cam is used for rotating under the driving of the driving shaft to push the contact of the micro switch, thereby triggering the micro switch.

[0024] Beneficial effect: the triggering action of the micro switch is realized through the micro switch cam, simple structure, reliable transmission.

[0025] Further, the micro switch driving cam, the auxiliary switch transmission member, the cam transmission member and the auxiliary switch driving cam are arranged in the axial direction of the driving shaft.

[0026] Beneficial effect: avoid the interference between the movement members, ensure the reliable use.

[0027] Further, the end of the driving shaft is provided with a closing and opening indication board.

[0028] Beneficial effect: through the closing and opening indication board, the closing and opening state of the switch operating mechanism can be conveniently known.

[0029] The technical scheme of the switch electrical equipment of the present application is:

[0030] The utility model provides a switch electrical equipment, including breaking mechanism and the switch operating mechanism that breaks the breaking mechanism, and the switch operating mechanism includes frame, and the auxiliary switch is installed on the frame, and the auxiliary switch is used to provide the signal of operating mechanism opening operation and closing operation, and the auxiliary switch has auxiliary switch pivot, and the driving shaft is rotatably equipped on the frame, and the auxiliary switch driving cam is rotatably equipped on the driving shaft, and the cam groove is equipped on the auxiliary switch driving cam, and the cam transmission part is swingably equipped on the frame, and the swing axis of cam transmission part is parallel with the rotation axis of auxiliary switch driving cam, and the first transmission pin is equipped along its swing axis direction on the cam transmission part, and the first transmission pin extends into the cam groove and cooperates with the cam groove to drive the cam transmission part swing when the auxiliary switch driving cam rotates, and the auxiliary switch transmission part is rotatably equipped on the auxiliary switch pivot, and the second transmission pin is equipped on one of the cam transmission part and the auxiliary switch transmission part, and the transmission long hole is equipped on the other, to drive the auxiliary switch transmission part swing through the second transmission pin and the transmission long hole cooperation when the cam transmission part swings, and further drive the auxiliary switch pivot rotates, and the microswitch is installed on the frame, and the microswitch is used to provide the signal of operating mechanism opening operation and closing operation, and the microswitch trigger structure is further equipped on the driving shaft for triggering the microswitch, and the microswitch trigger structure and the auxiliary switch driving cam are arranged in the driving shaft axial direction.

[0031] Beneficial effects: through setting auxiliary switch driving cam drives cam transmission part swing, and the cam transmission part swing drives auxiliary switch transmission part rotate, and further drives auxiliary switch pivot rotate, realizes the circuit switching in auxiliary switch, in the whole transmission structure, the connection between auxiliary switch driving cam and cam transmission part, cam transmission part and auxiliary switch transmission part is high pair, and the friction of connection position is smaller, can reduce the friction loss in transmission process, compared with the motion pair of existing four bar linkage transmission mechanism, reduces transmission loss, and the overall motion precision is high, guarantees the rotation angle of auxiliary switch pivot, improves the use reliability of auxiliary switch, makes the product operation more safe and stable, and, through setting auxiliary switch and microswitch simultaneously, can utilize the circuit switching in auxiliary switch and output signal to indication system to indicate opening and closing state, utilizes microswitch to control the opening and closing circuit of switch operating mechanism to control opening and closing operation, or utilizes auxiliary switch and microswitch to form position indication " double confirmation ", and auxiliary switch and microswitch all output signal to signal system, when receiving any kind of signal, can correspond to indicate correct opening and closing state, avoids the influence on the judgment of opening and closing state due to the failure of one kind of switch, avoids misoperation, provides double signal indication, improves the use reliability of switch operating mechanism, simultaneously, the microswitch trigger structure and the auxiliary switch driving cam are arranged in the driving shaft axial direction, and the structure is compact, improves space utilization.

[0032] Further, the cam groove extends along the circumference of the auxiliary switch driving cam, and the cam groove comprises a constant-diameter section, a closing transmission section and an opening transmission section, the constant-diameter section is located between the closing transmission section and the opening transmission section in the extension direction of the cam groove, the closing transmission section is used for driving the cam transmission piece to swing when the switch operating mechanism performs closing operation, and the opening transmission section is used for driving the cam transmission piece to swing when the switch operating mechanism performs opening operation.

[0033] Beneficial effects: the cam groove comprises the constant-diameter section, the closing transmission section and the opening transmission section, the swinging of the cam transmission piece is realized, and the machining is facilitated.

[0034] Further, the rack is provided with a swinging shaft, one end of the cam transmission piece in the length direction of the cam transmission piece is swingably assembled on the swinging shaft, the second transmission pin is located at the end of the cam transmission piece away from the swinging shaft, and the first transmission pin is located between the second transmission pin and the swinging shaft.

[0035] Beneficial effects: by setting the position of the first transmission pin between the swinging shaft and the second transmission pin, when the auxiliary switch driving cam drives the cam transmission piece to swing through the first transmission pin in the middle, the second transmission pin at the far end can obtain a larger stroke, so that the rotation angle requirement of the auxiliary switch is facilitated to be met, and the size of the auxiliary switch driving cam is reduced.

[0036] Further, the second transmission pin is arranged on the cam transmission piece, and the transmission long hole is arranged on the auxiliary switch transmission piece.

[0037] Beneficial effects: the size of the cam transmission piece is reduced, and the arrangement space is saved.

[0038] Further, the cam transmission piece is a cam transmission connecting plate, the cam transmission connecting plate is provided with an avoiding hole, the auxiliary switch rotating shaft extends into the avoiding hole, and the avoiding hole is used for avoiding the auxiliary switch rotating shaft in the swinging process of the cam transmission connecting plate.

[0039] Beneficial effects: by setting the cam transmission piece as a plate structure, the avoiding hole is conveniently opened, space is saved, and by avoiding the auxiliary switch rotating shaft through the avoiding hole, the axial arrangement space is saved and the original structure of the auxiliary switch does not need to be changed.

[0040] Further, in the length direction of the cam transmission piece, the driving shaft is located between the swinging shaft and the auxiliary switch rotating shaft.

[0041] Beneficial effects: the peripheral space of the driving shaft is utilized to set the transmission structure, and the structure is compact.

[0042] Further, the cam transmission piece and the micro switch triggering structure are located on the same side in the axial direction of the auxiliary switch driving cam.

[0043] Beneficial effect: it is convenient to arrange the micro switch and the auxiliary switch.

[0044] Further, the micro switch and the auxiliary switch are located on two sides of the driving shaft in the radial direction.

[0045] Beneficial effect: the radial space of the driving shaft is fully utilized, and the structure is compact.

[0046] Further, the micro switch trigger structure comprises a micro switch driving cam assembled on the driving shaft in a rotation-stopping manner, and the micro switch driving cam is used to rotate under the driving of the driving shaft to push the contact of the micro switch, thereby triggering the micro switch.

[0047] Beneficial effect: the triggering action of the micro switch is realized through the micro switch cam, and the structure is simple and the transmission is reliable.

[0048] Further, the micro switch driving cam, the auxiliary switch transmission member, the cam transmission member and the auxiliary switch driving cam are arranged in a staggered manner in the axial direction of the driving shaft.

[0049] Beneficial effect: interference between the moving members is avoided, and use reliability is ensured.

[0050] Further, the end of the driving shaft is provided with a closing and opening indication board.

[0051] Beneficial effect: the closing and opening state of the switch operating mechanism can be conveniently obtained through the closing and opening indication board. BRIEF DESCRIPTION OF DRAWINGS

[0052] Figure 1 It is the auxiliary switch and micro switch mounting structure of the switch operating mechanism in embodiment 1 of the application;

[0053] Figure 2 It is Figure 1 the side view;

[0054] Figure 3 It is Figure 1 the auxiliary switch, micro switch and driving shaft assembly structure in

[0055] Figure 4 It is Figure 1 the transmission connection structure of the auxiliary switch and the driving shaft in

[0056] Figure 5 It is the state diagram of the cam transmission member and the auxiliary switch driving cam when the switch operating mechanism in embodiment 1 of the application is in the opening position;

[0057] Figure 6 It is Figure 5 the AC loop conduction diagram of the auxiliary switch in

[0058] Figure 7 Fig. 1 is a schematic diagram of the state of the cam transmission member and the auxiliary switch driving cam when the switch operating mechanism in embodiment 1 of the present application is in the closing position;

[0059] Figure 8 Fig. 2 is a schematic diagram of the state of the cam transmission member and the auxiliary switch driving cam when the switch operating mechanism in embodiment 1 of the present application is in the opening position. Figure 7 Fig. 3 is a schematic diagram of the BD circuit conduction in the auxiliary switch of embodiment 1 of the present application.

[0060] In the figure: 1, front mounting plate; 2, rear mounting plate; 3, transmission gear; 4, auxiliary switch mounting plate; 5, driving shaft; 6, auxiliary switch driving cam; 61, cam groove; 7, auxiliary switch; 71, auxiliary switch rotating shaft; 8, micro switch; 9, micro switch driving cam; 10, opening and closing indicator; 11, cam transmission connecting plate; 111, avoiding hole; 112, first transmission pin; 113, second transmission pin; 12, auxiliary switch transmission member; 121, transmission long hole; 13, swinging shaft; 14, micro switch mounting plate. DETAILED DESCRIPTION

[0061] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application, i.e., the described embodiments are only some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application generally described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0062] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without making creative efforts fall within the scope of the present application.

[0063] It should be noted that the relationship terms such as "first" and "second" and the like that can appear in the specific embodiments of the present application are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between the entities or operations. Moreover, the terms such as "include", "contain" or any other variants that can appear are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the elements defined by the possible statements "including a" and the like do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0064] In the description of the present application, unless explicitly defined and limited otherwise, the terms "mounting", "connecting", "connection" can be understood in a broad sense, for example, can be fixed connection, can be detachable connection, or integral connection; can be mechanical connection, can be electrical connection; can be direct connection, or indirect connection through intermediate medium, or internal connection of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0065] In the description of the present application, unless explicitly defined and limited otherwise, the term "provided with" can be understood in a broad sense, for example, the object of "provided with" can be part of the body, or arranged separately from the body and connected to the body, which connection can be detachable or non-detachable. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0066] The present application will be further described in detail below in combination with embodiments.

[0067] Embodiment 1 of the switch operating mechanism of the present application:

[0068] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , the switch operating mechanism comprises a frame, the frame comprises a front mounting plate 1 and a rear mounting plate 2, the front mounting plate 1 and the rear mounting plate 2 are fixedly connected together through a connecting rod (not shown in the figure), a drive shaft 5 is rotatably assembled on the frame, the drive shaft 5 passes through the front mounting plate 1 and the rear mounting plate 2, a transmission gear 3 is fixedly installed on the part of the drive shaft 5 between the front mounting plate 1 and the rear mounting plate 2, the transmission gear 3 is used to cooperate with the corresponding drive gear, the drive gear rotates under the action of the input torque to drive the transmission gear 3 to rotate, and in turn drives the drive shaft 5 to rotate when the switch operating mechanism performs opening and closing operation. The frame is also provided with an auxiliary switch 7 and a micro switch 8, the auxiliary switch 7 and the micro switch 8 are both used to provide signals for opening and closing operation of the operating mechanism, wherein the auxiliary switch 7 is used to output signals to the indication system to indicate the opening and closing state, and the micro switch 8 is used to control the opening and closing circuit of the switch operating mechanism to control the opening and closing operation, the drive shaft 5 is in transmission connection with the auxiliary switch 7 and the micro switch 8 respectively, so as to drive the circuit switching of the auxiliary switch 7 and trigger the micro switch 8 through the rotation of the drive shaft 5.

[0069] An auxiliary switch mounting plate 4 is fixed on the front side of the front mounting plate 1. The auxiliary switch 7 is fixedly mounted on the auxiliary switch mounting plate 4. The auxiliary switch mounting plate 4 includes a vertical fixing section, a horizontal connecting section and a vertically arranged mounting section. The fixing section is fixedly connected to the front mounting plate 1, and the auxiliary switch 7 is fixed on the mounting section.

[0070] The auxiliary switch 7 is suspended on the front side of the front mounting plate 1 via the auxiliary switch mounting plate 4. The auxiliary switch 7 has an auxiliary switch pivot 71, and a clearance gap is formed between the mounting section of the auxiliary switch mounting plate 4 and the front mounting plate 1. The auxiliary switch pivot 71 passes through the mounting section of the auxiliary switch mounting plate 4 and extends into the clearance gap.

[0071] An auxiliary switch drive cam 6 is provided on the portion of the drive shaft 5 located on the front side of the front mounting plate 1. The auxiliary switch drive cam 6 is anti-rotationally mounted on the drive shaft 5 and positioned close to the front mounting plate 1. The auxiliary switch drive cam 6 has a cam groove 61, which is a through groove penetrating both ends of the auxiliary switch drive cam 6. Figure 4 As shown, the cam groove 61 extends circumferentially along the cam and includes a constant-diameter section, a closing transmission section, and a opening transmission section. In the extension direction of the cam groove 61, the constant-diameter section is located between the closing transmission section and the opening transmission section. The constant-diameter section is an arc segment centered on the cam center. The curvature of the closing transmission section is greater than that of the constant-diameter section, and the curvature of the opening transmission section is less than that of the constant-diameter section. The closing transmission section drives the cam drive component to swing when the operating mechanism performs a closing operation, and the opening transmission section drives the cam drive component to swing when the operating mechanism performs a opening operation, thereby driving the auxiliary switch shaft 71 to rotate, thus achieving circuit switching. When the cam drive component is engaged with the constant-diameter section, the distance between the engaging part and the cam center remains unchanged, and the constant-diameter section of the cam groove 61 does not drive the cam drive component to swing. When the cam drive component is engaged with the closing and opening transmission sections of the cam groove 61, the closing and opening transmission sections guide the swing of the cam drive component.

[0072] A cam drive component is located on the front side of the auxiliary switch drive cam 6. The cam drive component is a cam drive connecting plate 11. A swing shaft 13 is provided on the frame. The swing shaft 13 is located directly below the drive shaft 5. The lower end of the cam drive connecting plate 11 in the length direction is swung and mounted on the swing shaft 13. The swing axis of the cam drive connecting plate 11 is parallel to the rotation axis of the drive shaft 5. In this embodiment, the swing shaft 13 is formed by the screw part of a bolt. The front mounting plate 1 and the cam drive connecting plate 11 are respectively provided with bolt through holes. Two nuts are connected to the bolt. The two nuts are located on the front and rear sides of the front mounting plate 1 respectively so as to fix the bolt on the front mounting plate 1 through the front and rear nuts. At the same time, the cam drive connecting plate 11 is rotatably sleeved on the screw part between the bolt end and the front nut. The bolt end and the front nut axially limit the cam drive connecting plate 11.

[0073] The cam transmission connecting plate 11 is provided with a first transmission pin 112 extending along the swing axis of the cam transmission connecting plate 11, the first transmission pin 112 is a cylindrical pin and is welded and fixed on the cam transmission connecting plate 11, the first transmission pin 112 extends into the cam groove 61 and cooperates with the cam groove 61 to drive the cam transmission connecting plate 11 to swing when the auxiliary switch driving cam 6 rotates.

[0074] The auxiliary switch transmission member 12 is assembled on the auxiliary switch rotating shaft 71, the auxiliary switch transmission member 12 is a strip-shaped plate, one end of which is provided with a thickened part, and the thickened part is provided with a rotation-stopping hole, the rotation-stopping hole is a square hole to form a rotation-stopping cooperation with the square auxiliary switch rotating shaft 71. The end of the auxiliary switch transmission member 12 away from the auxiliary switch rotating shaft 71 is provided with a transmission long hole 121, the transmission long hole 121 extends along the length direction of the auxiliary switch transmission member 12, and the upper end of the cam transmission connecting plate 11 in the length direction is provided with a second transmission pin 113, the second transmission pin 113 is a cylindrical pin and is welded and fixed on the cam transmission member, the second transmission pin 113 extends into the transmission long hole 121 to drive the auxiliary switch transmission member 12 to rotate through the cooperation between the second transmission pin 113 and the transmission long hole 121 when the cam transmission member swings, and then drives the auxiliary switch rotating shaft 71 to rotate through the auxiliary switch transmission member 12.

[0075] The end of the cam transmission connecting plate 11 away from the swing axis 13 has a widened section with a wider plate surface, the widened section is provided with an avoiding hole 111 extending along the direction perpendicular to the length direction of the cam transmission connecting plate 11, the avoiding hole 111 is used for the auxiliary switch rotating shaft 71 to extend into to avoid the auxiliary switch rotating shaft 71 during the swing of the cam transmission connecting plate 11. The second transmission pin 113 is arranged on the side of the avoiding hole 111 away from the swing axis 13, the second transmission pin 113 and the swing axis 13 are respectively arranged at the two ends of the cam transmission connecting plate 11, and the first transmission pin 112 is arranged at the middle part of the cam transmission connecting plate 11, so that when the auxiliary switch driving cam 6 drives the cam transmission member to swing through the first transmission pin 112 in the middle, the second transmission pin 113 at the end of the cam transmission connecting plate 11 can obtain a larger stroke, thereby facilitating to meet the rotation angle requirement of the auxiliary switch 7, and being beneficial to reducing the size of the auxiliary switch driving cam 6.

[0076] The front side plate surface of the front mounting plate 1 is also fixed with a micro switch mounting plate 14, and the micro switch 8 is fixed on the micro switch mounting plate 14. The micro switch 8 includes a first micro switch and a second micro switch arranged side by side in front and back. The first micro switch is used to be triggered after the switch operating mechanism is operated to the open position, and the second micro switch is used to be triggered after the switch operating mechanism is operated to the closed position. The drive shaft 5 is also provided with a micro switch triggering structure for triggering the micro switch 8. The micro switch triggering structure includes a micro switch drive cam 9 assembled on the drive shaft 5. The micro switch drive cam 9 includes a first micro switch drive cam and a second micro switch drive cam. The first micro switch drive cam is used to cooperate with the contact of the first micro switch to trigger the first micro switch when rotating. The second micro switch drive cam is used to cooperate with the contact of the second micro switch to trigger the second micro switch when rotating. The convex points of the first micro switch drive cam and the convex points of the second micro switch drive cam are at different positions in the circumferential direction of the drive shaft. The convex part of the first micro switch drive cam and the convex part of the second micro switch drive cam are staggered to make the contact of one micro switch open and the contact of the other micro switch close when the switch operating mechanism is in the open position or the closed position. Different micro switches are triggered to switch the open and closed control circuit, and then control the open and closed operation of the switch operating mechanism.

[0077] The cam transmission connecting plate 11 and the micro switch drive cam 9 are located on the front side of the auxiliary switch drive cam 6 in the axial direction. The micro switch drive cam 9, the auxiliary switch transmission member 12, the cam transmission member, and the auxiliary switch drive cam 6 are arranged in sequence from front to back in the axial direction of the drive shaft 5. The micro switch 8 and the auxiliary switch 7 are located on the opposite sides of the drive shaft 5 in the radial direction. In the length direction of the cam transmission member, the drive shaft 5 is located between the swing shaft 13 and the auxiliary switch shaft 71. This arrangement can make full use of the circumferential space of the drive shaft 5 to arrange the micro switch 8, the auxiliary switch 7 and the corresponding transmission structure, and the structure is compact.

[0078] The front end of the drive shaft 5 is provided with an open and closed indication plate 10, and the open and closed indication plate 10 is marked with "open" and "closed" characters. The open and closed state of the switch operating mechanism can be easily known through the open and closed indication plate 10.

[0079] When the switch operating mechanism is operated to the open position, as shown in FIG. 2, the first micro switch drive cam 9 of the micro switch 8 is in the open position, and the convex part of the first micro switch drive cam 9 is located in the convex part of the cam transmission connecting plate 11. The convex part of the first micro switch drive cam 9 is in contact with the convex part of the cam transmission connecting plate 11, and the convex part of the second micro switch drive cam 9 is away from the convex part of the cam transmission connecting plate 11. The first micro switch of the micro switch 8 is triggered, and the second micro switch of the micro switch 8 is not triggered. Figure 5 and Figure 6As shown, the state of the auxiliary switch 7 corresponds to the open state, the AC circuit in the auxiliary switch 7 is turned on, and the first transmission pin 112 is on the opening transmission section of the cam groove 61; when the driving shaft 5 rotates clockwise, the driving shaft 5 drives the auxiliary switch driving cam 6 to rotate, so that the first transmission pin 112 on the cam transmission connecting plate 11 moves along the track of the cam groove 61, the cam transmission connecting plate 11 swings in a certain angle range, and then the movement is further transmitted to the auxiliary switch rotating shaft 71 through the second transmission pin 113 and the auxiliary switch transmission member 12, when the switch operating mechanism changes from the open operation in place state to the closed operation in place state, the open and closed indicator changes from the open word to the closed word, and, as shown, Figure 7 and Figure 8 As shown, the first transmission pin 112 is on the closing transmission section of the cam groove 61, the auxiliary switch 7 changes from the open state to the closed state, the circuit in the auxiliary switch 7 changes from the AC circuit conduction to the BD circuit conduction, and the circuit switching is completed.

[0080] In the whole transmission structure, the connection between the auxiliary switch driving cam and the cam transmission member, the cam transmission member and the auxiliary switch transmission member is a high pair, the friction force of the connection position is small, the friction loss in the transmission process can be reduced, compared with the existing four-bar linkage transmission mechanism, the transmission loss is reduced, the overall motion precision is high, the rotation angle of the auxiliary switch rotating shaft is guaranteed, the stroke trajectory is more accurate, the error caused by the four-bar linkage mechanism is avoided, the auxiliary switch 7 loses the function, the reliability and stability of the auxiliary switch 7 in switching are improved, so that the whole product meets the expected requirements; the overall structure of the cam mechanism is compact, the installation space requirement is lower, the overall structure is more compact, and the overall strength is better, meanwhile, the cam mechanism avoids the self-locking of the connecting rod mechanism, and the movement is more stable; and, by simultaneously arranging the auxiliary switch and the micro switch, the circuit in the auxiliary switch is switched and the signal is output to the indication system to indicate the open and closed states, the micro switch controls the open and closed circuit of the switch operating mechanism to control the open and closed operation, when the micro switch is triggered, the signal is sent in time, which is beneficial to improve the response speed of the open and closed operation.

[0081] Embodiment 2 of the switch operating mechanism in the application:

[0082] The difference between this embodiment and embodiment 1 is that the cam groove in embodiment 1 is a through groove penetrating through both ends of the auxiliary switch driving cam, while in this embodiment, a cam groove is formed on one side end face of the auxiliary switch driving cam, and the cam groove has a forward groove bottom.

[0083] Embodiment 3 of the switch operating mechanism in the application:

[0084] The difference between the embodiment and the embodiment 1 is that the cam transmission member in the embodiment 1 is a cam transmission connecting plate. In the embodiment, the cam transmission member is a cylindrical rod structure. In other embodiments, the cam transmission member can also include two split connecting plates, one of which is provided with a long hole, and the other is provided with a bolt hole. The two connecting plates are connected by bolts and the length of the cam transmission member is adjustable.

[0085] Embodiment 4 of the switch operating mechanism in the application:

[0086] The difference between the embodiment and the embodiment 1 is that the first transmission pin and the second transmission pin in the embodiment 1 are welded and fixed on the cam transmission member. In the embodiment, the first transmission pin and the second transmission pin are rotatably assembled on the cam transmission member.

[0087] Embodiment 5 of the switch operating mechanism in the application:

[0088] The difference between the embodiment and the embodiment 1 is that the auxiliary switch transmission member in the embodiment 1 is a strip-shaped plate structure. In the embodiment, the auxiliary switch transmission member is a cylindrical rod structure.

[0089] Embodiment 6 of the switch operating mechanism in the application:

[0090] The difference between the embodiment and the embodiment 1 is that the second transmission pin is arranged on the cam transmission member in the embodiment 1, and the transmission long hole is arranged on the auxiliary switch transmission member. In the embodiment, the second transmission pin is arranged on the auxiliary switch transmission member, and the transmission long hole is arranged on the cam transmission member.

[0091] Embodiment 7 of the switch operating mechanism in the application:

[0092] The difference between the embodiment and the embodiment 1 is that the micro switch trigger structure in the embodiment 1 is a micro switch driving cam. In the embodiment, the micro switch trigger structure is a poking rod fixed on the driving shaft, which is used to press the contact of the micro switch to realize the closure.

[0093] Embodiment 8 of the switch operating mechanism in the application:

[0094] The difference between the embodiment and the embodiment 1 is that one end of the cam transmission member in the embodiment 1 is swingably assembled on the swing shaft, the second transmission pin is located at the end of the cam transmission member away from the swing shaft, and the first transmission pin is between the second transmission pin and the swing shaft. In the embodiment, one end of the cam transmission member in the length direction is swingably assembled on the swing shaft, the first transmission pin is located at the end of the cam transmission member away from the swing shaft, and the second transmission pin is between the second transmission pin and the swing shaft. It is adapted to adjust the relative position of the auxiliary switch and the driving shaft, and ensure that the movement of the cam transmission member and the auxiliary switch driving cam does not interfere.

[0095] Embodiment 9 of the switch operating mechanism in the application:

[0096] The difference between the present embodiment and embodiment 1 is that the cam transmission connecting plate in embodiment 1 is provided with a relief hole, and the auxiliary switch shaft extends into the relief hole. In the present embodiment, the auxiliary switch transmission member is flush with the end face of the auxiliary switch shaft, and the cam transmission connecting plate is not provided with a relief hole.

[0097] Embodiment 10 of the switch operating mechanism in the application:

[0098] The difference between the present embodiment and embodiment 1 is that the auxiliary switch in embodiment 1 is used to output a signal to an indication system to indicate the on-off state, and the micro switch is used to control the on-off circuit of the switch operating mechanism to control the on-off operation. In the present embodiment, the auxiliary switch and the micro switch both output a signal to the signal system when the circuit is switched, and the signal system can correspondingly indicate the on-off state when receiving any signal, and the auxiliary switch and the micro switch form a position indication "double confirmation", thereby improving the use reliability.

[0099] Embodiment of the switch electrical apparatus in the application:

[0100] The switch electrical apparatus comprises a breaking mechanism and a switch operating mechanism for operating the breaking mechanism, and the switch operating mechanism in the present embodiment has the same structure as the switch operating mechanism described in any one of embodiments 1-10 of the switch operating mechanism, and will not be described here.

[0101] Finally, it should be noted that the above only describes the preferred embodiments of the application, and is not intended to limit the application, although the application has been described in detail with reference to the foregoing embodiments, and those skilled in the art can still modify the technical solutions described in the foregoing embodiments without creative labor, or make equivalent replacement of some technical features. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the application shall be included in the protection scope of the application.

Claims

1. A switch operating mechanism comprising a frame, an auxiliary switch mounted on the frame, the auxiliary switch being used to provide a signal for opening and closing operation of the operating mechanism, the auxiliary switch having an auxiliary switch rotating shaft, and a driving shaft rotatably mounted on the frame, characterized in that, The driving shaft is provided with an auxiliary switch driving cam, the auxiliary switch driving cam is provided with a cam groove, the frame is swingably provided with a cam transmission member, the swing axis of the cam transmission member is parallel to the rotation axis of the auxiliary switch driving cam, the cam transmission member is provided with a first transmission pin extending along the swing axis of the cam transmission member, the first transmission pin extends into the cam groove and cooperates with the cam groove to drive the cam transmission member to swing when the auxiliary switch driving cam rotates, the auxiliary switch rotating shaft is provided with an auxiliary switch transmission member, the auxiliary switch transmission member is provided with a second transmission pin on one of the cam transmission member and the auxiliary switch transmission member, and the other is provided with a transmission long hole to drive the auxiliary switch transmission member to swing through the cooperation of the second transmission pin and the transmission long hole when the cam transmission member swings, and then drive the auxiliary switch rotating shaft to rotate, the frame is further provided with a micro switch, the micro switch is used to provide signals for the opening and closing operations of the operating mechanism, the driving shaft is further provided with a micro switch triggering structure for triggering the micro switch, the micro switch triggering structure and the auxiliary switch driving cam are arranged in the axial direction of the driving shaft, the cam groove extends along the circumference of the auxiliary switch driving cam, and the cam groove comprises an equal-diameter section, a closing transmission section and an opening transmission section, the equal-diameter section is located between the closing transmission section and the opening transmission section in the extension direction of the cam groove, the closing transmission section is used to drive the cam transmission member to swing when the switch operating mechanism performs the closing operation, and the opening transmission section is used to drive the cam transmission member to swing when the switch operating mechanism performs the opening operation.

2. The switch actuating mechanism according to claim 1, characterized in that The frame is provided with a swing shaft, one end of the cam transmission member in the length direction of the cam transmission member is swingably provided on the swing shaft, and the second transmission pin is located at the end of the cam transmission member away from the swing shaft, and the first transmission pin is located between the second transmission pin and the swing shaft.

3. The switch actuating mechanism of claim 2 wherein, The second transmission pin is arranged on the cam transmission member, and the transmission long hole is arranged on the auxiliary switch transmission member.

4. The switch actuating mechanism of claim 1 wherein, The cam transmission member is a cam transmission connecting plate, the cam transmission connecting plate is provided with a avoiding hole, the auxiliary switch rotating shaft extends into the avoiding hole, and the avoiding hole is used to avoid the auxiliary switch rotating shaft during the swing of the cam transmission connecting plate.

5. The switch actuating mechanism of claim 2 wherein, In the length direction of the cam transmission member, the driving shaft is located between the swing shaft and the auxiliary switch rotating shaft.

6. The switch actuating mechanism according to any one of claims 1 to 5, characterized in that The cam transmission member and the micro switch triggering structure are located on the same side of the auxiliary switch driving cam in the axial direction.

7. The switch actuating mechanism of claim 6 wherein, The micro switch and the auxiliary switch are located on two sides opposite to each other in the radial direction of the driving shaft.

8. The switch actuating mechanism of claim 6 wherein, The micro switch triggering structure comprises a micro switch driving cam which is rotationally provided on the driving shaft, and the micro switch driving cam is used to rotate to push the contact of the micro switch under the driving of the driving shaft, and then trigger the micro switch.

9. The switch actuating mechanism of claim 8 wherein, The micro switch driving cam, the auxiliary switch transmission member, the cam transmission member and the auxiliary switch driving cam are arranged in the axial direction of the driving shaft.

10. The switch actuating mechanism according to any one of claims 1 to 5, characterized in that The end of the driving shaft is provided with a closing and opening indication board.

11. An electrical switching device comprising an opening mechanism and a switching operating mechanism for operating the opening mechanism to open, characterized in that The switch operating mechanism is the switch operating mechanism according to any one of claims 1-10.

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