CN109243878B - Three-position opening and closing operating mechanism of change-over switch - Google Patents
Three-position opening and closing operating mechanism of change-over switch Download PDFInfo
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- CN109243878B CN109243878B CN201811078987.3A CN201811078987A CN109243878B CN 109243878 B CN109243878 B CN 109243878B CN 201811078987 A CN201811078987 A CN 201811078987A CN 109243878 B CN109243878 B CN 109243878B
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- switching gear
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- gear
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/50—Driving mechanisms, i.e. for transmitting driving force to the contacts with indexing or locating means, e.g. indexing by ball and spring
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a three-position opening and closing operating mechanism of a change-over switch, which comprises a rotating shaft, a mounting rack, a translation assembly, a clamping assembly and a coil assembly, wherein the rotating shaft, the mounting rack, the translation assembly, the clamping assembly and the coil assembly are externally connected to a contact system; the translational component is driven by the coil assembly to complete switching on/off of three positions, the clamping component positions the three positions, and the translational component drives the rotating shaft to complete switching on/off externally connected to the contact system. Compared with the conventional mode of matching the gear assembly with motor driving, the gear assembly is simpler in structure, complicated and abrasion of meshing between original parts are eliminated, and the whole activity is simple, convenient and stable; the three positions are positioned stably, two closing positions and one opening position can be well limited, accurate limitation after switching on and off of a contact system connected with the rotating shaft is guaranteed, and the opening and closing positions are stable. The coil drives the mode that trades the floodgate and uses less energy, only the circular telegram of moment accomplish mechanical locking can, does not consume energy at ordinary times, more energy-conservation.
Description
Technical Field
The invention relates to the field of electrical switches, in particular to a three-position opening and closing operating mechanism of a change-over switch.
Background
The change-over switch is widely applied to various places needing uninterrupted power supply, and realizes the change-over of a load circuit between two paths of power supplies so as to ensure the reliability of power supply of a user. In order to realize switching on/off switching of the contact system, the existing structure extends a rotating shaft from the contact system, the rotating shaft is driven to rotate by an operating mechanism, the operating mechanism is connected with a motor and is driven to rotate and switch by the motor, and the operating mechanism can be rotated by manual operation. The existing operating mechanism basically adopts a gear structure for rotary transmission, a firm structure is lacked to limit the stop position of the operating mechanism, and the situation that the opening and closing position is unstable can occur.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a three-position opening and closing operation mechanism of a change-over switch, which drives a structure through magnetic attraction and positions the opening and closing position through elastic clamping so as to realize opening and closing operation with a simpler structure.
The invention adopts the following technical scheme: a three-position opening and closing operating mechanism of a change-over switch comprises a rotating shaft, a mounting rack, a translation assembly, a clamping assembly and a coil assembly, wherein the rotating shaft, the mounting rack, the translation assembly, the clamping assembly and the coil assembly are externally connected to a contact system; the translation assembly comprises a translation shaft, a swing arm and a limiting piece, wherein the translation shaft can horizontally slide and is arranged on the mounting frame, the swing arm is rotatably arranged on the mounting frame, the translation shaft and the swing arm are mutually linked, and the swing arm and the rotating shaft are in linkage rotation; the coil group comprises closing coils positioned at two sides of the axial direction of the translation shaft and opening coils positioned at the side edges of the translation shaft, the end part of the translation shaft is a magnetically attractable attraction part, the attraction part is sleeved in the closing coils, and when one side of the closing coils is electrified, magnetic force is generated to attract the side attraction part; the clamping assembly comprises a clamping plate and an elastic piece, wherein three clamping grooves are formed in the clamping plate along the axial direction of a translation shaft and are communicated through a movable groove, the limiting piece is located in the movable groove and clamped in the three clamping grooves when the translation shaft translates in place, the three clamping grooves correspond to the left and right closing positions and the middle opening position, the elastic piece elastically offsets the clamping plate to enable the clamping groove to be clamped with the limiting piece, the clamping plate movably compresses the elastic piece to enable the limiting piece to be separated from the clamping groove to reach the movable groove, the clamping plate is connected with a magnetically attractive actuation shaft, the actuation shaft is sleeved in the opening coil, and magnetic force is generated when the opening coil is electrified to attract the actuation shaft to drive the clamping plate to move.
As an improvement, the rotating shaft is rotatably arranged on the mounting frame and serves as a rotating shaft of the swing arm, the limiting piece is cylindrical and penetrates through the translation shaft, a first waist-shaped hole for the translation shaft to penetrate through is formed in the lower portion of the swing arm, and the translation shaft and the swing arm are in linkage through the cooperation of the limiting piece and the first waist-shaped hole.
As an improvement, the locating part includes cylinder and column jacket, and the lower part of swing arm is the U-shaped and sets up symmetrical first waist shape hole in both sides, and the cylinder wears to locate on the translation axle and pass the first waist shape hole of both sides, and the mounting bracket sets up and both sides all have the groove of sliding in the translation axle both sides, and the column jacket is established to the both ends cover of cylinder, and the column jacket cooperation slides in the groove of sliding and stretches into draw-in groove and movable groove department and cooperate, and the inboard of column jacket is provided with the annular platform that the external diameter is greater than the column jacket body, and the size of annular platform is greater than the first waist shape hole of both sides and the groove size of sliding and spacing the column jacket.
As an improvement, the upper part of the swing arm is provided with an adjusting hole for the external handle to penetrate.
As an improvement, a lug is arranged on the rotating shaft, micro switches are arranged on two sides of the mounting frame opposite to the rotating shaft, when the translation shaft is in the opening position, the lug is positioned in the middle position and separated from the micro switches, and when the translation shaft is in the closing position, the lug rotates to the left side or the right side from the rotating shaft to contact and trigger the micro switches.
As an improvement, the clamping plate comprises a transverse plate and a vertical plate which are connected with each other, the clamping groove and the movable groove are positioned on the vertical plate, the vertical plate and a part of mounting frame are arranged in parallel adjacently, a plurality of second kidney-shaped holes are formed in the vertical plate, a plurality of limiting posts matched with the second kidney-shaped holes are arranged on the mounting frame, the outer ends of the limiting posts face to the vertical plate to install limiting pieces so that the vertical plate is installed on the side edge of the mounting frame, and the directions of the second kidney-shaped holes are consistent with the axial direction of the suction shaft; the transverse plate extends outwards relative to the vertical plate and is fixedly arranged with the suction shaft.
As an improvement, the elastic piece is sleeved outside the suction shaft, the upper end of the elastic piece is propped against the transverse plate, and the lower end of the elastic piece is propped against the mounting frame.
As an improvement, still be provided with contact switching mechanism between pivot and the contact system, contact switching mechanism includes the sun gear, the main switching gear and the vice switching gear that are connected respectively with two sets of moving contact in the contact system, the sun gear sets up and links in the pivot, the periphery of sun gear sets up to one section arc cooperation tooth and one section no tooth arc, main switching gear and vice switching gear are located the juncture position of upper and lower two arc cooperation teeth and no tooth arc respectively, when the sun gear carries out corotation or reversal, arc cooperation tooth turns to main switching gear or vice switching gear and carries out the meshing transmission, no tooth arc of opposite side turns to vice switching gear or main switching gear and does not produce the contact.
As an improvement, return springs are arranged on the main switching gear and the auxiliary switching gear, one ends of the two groups of return springs are respectively connected with the main switching gear and the auxiliary switching gear, the other ends of the two groups of return springs are fixed with the mounting frame, the return springs are stretched or compressed when the main switching gear or the auxiliary switching gear is driven to rotate by the central gear, and the return springs provide a return force for the main switching gear or the auxiliary switching gear when the central gear returns.
As an improvement, the main switching gear and the auxiliary switching gear are both provided with a stop block, the mounting frame is provided with a stop post which is matched and abutted with the stop block, and the abutting positions of the stop block and the stop post are set as that when the main switching gear and the auxiliary switching gear are driven by the reset spring to reset to the initial position, the stop block and the stop post are abutted.
The invention has the beneficial effects that: the translational component is matched with the clamping component and the coil group to complete switching on and off of three positions, compared with a mode that a conventional gear component is matched with a motor to drive, the structure is simpler to realize, complicated and abrasion of meshing between original parts is eliminated, and the whole activity is simple, convenient and stable; the three positions are positioned stably, two closing positions and one opening position can be well limited, accurate limitation after switching on and off of a contact system connected with the rotating shaft is guaranteed, and the opening and closing positions are stable. The coil drives the mode that trades the floodgate and uses less energy, only the circular telegram of moment accomplish mechanical locking can, does not consume energy at ordinary times, more energy-conservation.
Drawings
Fig. 1 is a perspective view of a transfer switch of the present invention with a portion of the housing removed.
Fig. 2 is an enlarged view of the structure at M in fig. 1.
Fig. 3 is a first perspective view of the opening and closing operation mechanism according to the present invention, with part of the components removed.
Fig. 4 is a second perspective view of the opening and closing operation mechanism according to the present invention, with parts removed.
Fig. 5 is a perspective view of the contact switching mechanism of the present invention.
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1, 2, 3, 4 and 5 show a specific embodiment of a three-position opening and closing operation mechanism of the change-over switch of the present invention. The embodiment comprises a rotating shaft 0 externally connected to a contact system, a mounting frame 1, a translation assembly 2, a clamping assembly 3 and a coil assembly 4; the translation assembly 2 comprises a translation shaft 21, a swing arm 22 and a limiting piece 23, wherein the translation shaft 21 can horizontally slide and is arranged on the mounting frame 1, the swing arm 22 is rotatably arranged on the mounting frame 1, the translation shaft 21 and the swing arm 22 are mutually linked, and the swing arm 22 and the rotating shaft 0 are in linkage rotation; the coil group 4 comprises a closing coil 41 positioned at two axial sides of the translation shaft 21 and a separating coil 42 positioned at the side edge of the translation shaft 21, the end part of the translation shaft 21 is a magnetically attractable attraction part 211, the attraction part 211 is sleeved in the closing coil 41, and when one side closing coil 41 is electrified, magnetic force is generated to attract the side attraction part 211; the clamping assembly 3 comprises a clamping plate 31 and an elastic piece 32, wherein three clamping grooves 311 are formed in the clamping plate 31 along the axial direction of a translation shaft 21, the three clamping grooves 311 are communicated through a movable groove 312, a limiting piece 23 is positioned in the movable groove 312 and clamped in the three clamping grooves 311 when being translated along with the translation shaft 21 in place, the three clamping grooves 311 correspond to a closing position and a separating brake position in the middle of the left and right, the elastic piece 32 elastically props against the clamping plate 31 to limit the clamping grooves 311 to be clamped with the limiting piece 23, the clamping plate 31 movably compresses the elastic piece 32 to enable the limiting piece 23 to be separated from the clamping grooves 311 to reach the movable groove 312, the clamping plate 31 is connected with a magnetically attractive attraction shaft 310, the attraction shaft 310 is sleeved in a separating brake coil 42, and when the separating brake coil 42 is electrified, the attraction shaft 310 is attracted by magnetic force to drive the clamping plate 31 to move.
When the invention is used, the change-over switch is suitable for three-position switching, namely two closing positions and one opening position, which correspond to three clamping grooves 311 on the clamping plate 31, wherein the left clamping groove 311 and the right clamping groove 311 are two closing positions, and the middle clamping groove 311 is the opening position. When switching of opening and closing is performed: taking switching on as an example, the switching-on coil 41 on one side is electrified to work and attracts the suction part 211 on the side where the switching-on coil is located, and the limiting piece 23 is stressed to prop up the solid part between the clamping grooves 311, so that the clamping plate 31 is pushed against the force of the elastic piece 32, and when the limiting piece 23 relatively leaves the clamping grooves 311 and reaches the movable groove 312, translation can be carried out; the limiting piece 23 drives the translation shaft 21 to move together, when the limiting piece 23 reaches the limit position of closing, switching is completed, and the limiting piece 23 is blocked again by the blocking groove 311 which is reset by the elastic piece 32, so that the limiting piece 23 cannot leave the closing position; after the work is completed, the closing coil 41 can be powered off, so that the energy is saved. The above actions are realized whether from one side to the other side or from opening to closing. When the switching-on is to be performed from the switching-off to the switching-on at a certain side, the switching-off coil 42 is electrified to work so as to attract the attraction shaft 310 connected with the clamping plate 31, thereby downwards moving the clamping plate 31, namely downwards moving the clamping groove 311, the movable groove 312 reaches the limiting piece 23, the limiting piece 23 loses the limit of the clamping groove 311 and can swing towards the middle position, and after the switching-off coil 42 is powered off, the elastic piece 32 drives the reset clamping groove 311 to clamp the limiting piece 23 again, so that the clamping piece is stabilized at the middle switching-off position. The swing arm 22 linked with the translation shaft 21 swings to drive the rotating shaft 0 to rotate, so that switching of switching on and off at the contact system can be completed. The structure realizes automatic opening and closing, and manual opening and closing can be performed by manually pressing the clamping plate 31 by a worker; by manually driving the swing arm 22 to rotate, the action of the whole structure can be driven to perform switching-on. The solid portions between the clamping grooves 311 can be provided as arc-shaped surfaces, so that the limiting piece 23 can translate and squeeze the arc-shaped surfaces and jack the arc-shaped surfaces under the automatic or manual condition. Compared with the conventional mode of matching the gear assembly with motor driving, the invention has simpler structure realization, omits the complicated meshing and abrasion between the original parts, and has simple and stable overall movement; the three positions are positioned stably, two closing positions and one opening position can be well limited, accurate limitation after switching on and off of a contact system connected with the rotating shaft is guaranteed, and the opening and closing positions are stable. The coil drives the mode that trades the floodgate and uses less energy, only the circular telegram of moment accomplish mechanical locking can, does not consume energy at ordinary times, more energy-conservation.
As an improved specific embodiment, the rotating shaft 0 is rotatably arranged on the mounting frame 1 and is used as a rotating shaft of the swing arm 22, the limiting piece 23 is cylindrical and penetrates through the translation shaft 21, a first kidney-shaped hole 221 for the translation shaft 21 to penetrate through is formed in the lower portion of the swing arm 22, and the translation shaft 21 and the swing arm 22 are linked through the cooperation of the limiting piece 23 and the first kidney-shaped hole 221.
As shown in fig. 1, 2, 3 and 4, the swing arm 22 rotates in linkage with the rotating shaft 0, and the translation shaft 21 on one side of the swing arm 22 is linked to form a good linkage structure; the rotating shaft 0 is stable in position and can be well connected to the contact system to drive; the translation shaft 21 only moves horizontally, and the whole swing arm 22 swings circumferentially, so that the first kidney-shaped hole 221 and the limiting piece 23 are matched, under the condition that the translation of the translation shaft 21 and the circumferential movement of the swing arm 22 are realized, the two can be driven by the interference of the limiting piece 23 and the side wall of the first kidney-shaped hole 221, the limiting piece 23 moves along the first kidney-shaped hole 221 when the position of the swing arm 22 changes, the movement between the transmission and the structure is well realized, and the stable switching action of opening and closing can be realized.
As an improved specific embodiment, the limiting member 23 comprises a column 231 and a column sleeve 232, the lower part of the swing arm 22 is in a U shape, symmetrical first kidney-shaped holes 221 are formed in two sides of the swing arm 22, the column 231 is arranged on the translation shaft 21 in a penetrating mode and penetrates through the first kidney-shaped holes 221 in two sides of the swing arm, the mounting frame 1 is arranged on two sides of the translation shaft 21, sliding grooves 11 are formed in two sides of the translation shaft, the column sleeve 232 is sleeved at two ends of the column 231, the column sleeve 232 slides in the sliding grooves 11 in a matched mode and stretches into the clamping grooves 311 to be matched with the movable grooves 312, an annular table 233 with the outer diameter larger than that of a column sleeve 232 body is arranged on the inner side of the column sleeve 232, and the size of the annular table 233 is larger than that of the first kidney-shaped holes 221 in two sides and the sliding grooves 11 so that the column sleeve 232 is limited.
As shown in fig. 1, 2, 3 and 4, the shaft structure formed by the column body 231 and the column sleeve 232 is good, and performs translational movement in the sliding groove 11 of the mounting frame 1, and the two symmetrically arranged first kidney-shaped holes 221 can ensure good matching with the column body 231 and stable stress, and the translational shaft 21 can be accommodated in the U-shaped space at the lower part of the swing arm 22 in a matched manner, so that the structure is stable; the column sleeve 232 can be rotatably arranged on the column body 231, so that the column sleeve can be in rolling fit with the sliding groove 11, the clamping groove 311 and the movable groove 312, friction force is reduced, and switching on and switching off are smoother. After the column 231 and the column sleeve 232 are installed as a whole, the annular table 233 is well arranged to limit the positions between the column 231 and the swing arm 22 as well as between the column 231 and the mounting frame 1, so that the installation between structures is stable.
As a modified embodiment, the upper portion of the swing arm 22 is provided with an adjustment hole 222 through which an external handle is inserted. As shown in fig. 1, 2, 3 and 4, when the switching-on/off operation is performed by manual operation, a handle can be inserted into the position of the adjusting hole 222 on the basis of the swing arm 22, so that the whole arm of force is prolonged, and a worker can easily apply force to operate the handle to rotate the swing arm 22, thereby completing the switching-on/off operation.
As an improved specific embodiment, a bump 01 is arranged on the rotating shaft 0, micro switches 02 are arranged on two sides of the mounting frame 1 opposite to the rotating shaft 0, when the translation shaft 21 is in the opening position, the bump 01 is located in the middle position and separated from the micro switches 02, and when the translation shaft 21 is in the closing position, the bump 01 rotates to the left side or the right side from the rotating shaft 0 to contact and trigger the micro switches 02. As shown in fig. 4, when the switch-off position is shown, the protruding block 01 is located right below and separated from the micro switch 02, when the switch-on is performed by forward rotation or reverse rotation, the rotating shaft 0 drives the protruding block 01 to be in contact with one micro switch 02 and trigger the micro switch 02 on one side, and the micro switch 02 can feed back a switch-on signal, so that the internal accurate position condition can be known under the condition that the shell is covered structurally, and the management and the debugging are convenient.
As an improved specific embodiment, the clamping plate 31 comprises a transverse plate 314 and a vertical plate 313 which are connected with each other, the clamping groove 311 and the movable groove 312 are positioned on the vertical plate 313, the vertical plate 313 and a part of the installation frame 1 are adjacently and parallelly arranged, a plurality of second kidney-shaped holes 315 are formed in the vertical plate 313, a plurality of limit posts 12 which are used for being matched with the plurality of second kidney-shaped holes 315 are formed in the installation frame 1, limit pieces 13 are arranged at the outer ends of the limit posts 12 towards the vertical plate 313 to enable the vertical plate 313 to be installed on the side edge of the installation frame 1, and the direction of the second kidney-shaped holes 315 is consistent with the axial direction of the suction shaft 310; the cross plate 314 extends outwardly relative to the riser 313 and is fixedly mounted to the actuation shaft 310.
As shown in fig. 1, 2, 3 and 4, in a specific structure of the clamping plate 31, a part of the mounting frame 1 forms a U shape, one side is provided with a sliding groove 11 alone, the other side is provided with four groups of limiting posts 12 on the basis of the sliding groove 11, four second waist-shaped holes 315 are formed on the vertical plate 313 and correspondingly arranged at the four groups of limiting posts 12, the second waist-shaped holes are regularly arranged at four corners of the mounting frame 1, the stable arrangement of the vertical plate 313 is facilitated, and the vertical plate 313 is stably arranged on the limiting piece 13 outside the limiting posts 12, so that the vertical plate 313 can only move along the vertical direction; the clamping groove 311 and the movable groove 312 positioned in the geometric middle can stably move up and down. The transverse plate 314 is arranged vertically outwards from the vertical plate 313, the lower part of the transverse plate 314 is connected with the suction shaft 310 and props against the elastic piece 32, and the transverse plate 314 can be pressed down from the upper part to drive the vertical plate 313 to move, so that manual brake opening is realized.
As a modified embodiment, the elastic member 32 is sleeved outside the actuation shaft 310, with the upper end abutting against the transverse plate 314 and the lower end abutting against the mounting frame 1. As shown in fig. 1, 2 and 4, the elastic member 32 may be a spring, which is sleeved on the outer side of the engaging shaft 310 and is limited up and down, so that the structure is simple and stable, and the spring force to the vertical plate 313 and the stabilizing force after returning are provided when the spring force is accumulated when the spring force is compressed downwards.
As an improved specific embodiment, a contact switching mechanism 5 is further arranged between the rotating shaft 0 and the contact system, the contact switching mechanism 5 comprises a central gear 51, and a main switching gear 52 and a secondary switching gear 53 which are respectively connected with a main moving contact and a secondary moving contact in the contact system, the central gear 51 is arranged on the rotating shaft 0 for linkage, the periphery of the central gear 51 is provided with a section of arc-shaped matched teeth 511 and a section of toothless arcs 512, the main switching gear 52 and the secondary switching gear 53 are respectively positioned at the boundary positions of the upper arc-shaped matched teeth 511 and the lower arc-shaped matched teeth 512, and when the central gear 51 rotates positively or reversely, the arc-shaped matched teeth 511 rotate to the main switching gear 52 or the secondary switching gear 53 for meshing transmission, and the toothless arcs 512 on the other side rotate to the secondary switching gear 53 or the main switching gear 52 do not generate contact.
A general contact system adopts a shaft to drive a moving contact to rotate, and the rotating of the moving contact and the closing of a fixed contact of an upper cavity and a lower cavity realize the switching of two paths; the single moving contact switches back and forth, the pressure and abrasion born are doubled, and in order to improve the service life and the service performance of parts, some transfer switches adopt a structure that two groups of independent moving contacts are matched with independent fixed contacts. As shown in fig. 5, the contact switching mechanism 5 is provided so that the three-position opening and closing operation mechanism of the present invention can be applied to a contact system of two groups of moving contacts. The main switching gear 52 and the auxiliary switching gear 53 are respectively connected with a main moving contact and an auxiliary moving contact in the contact system; in the switching, the special design of the sun gear 51 is adopted, and the whole periphery of the sun gear 51 is divided into arc-shaped matched teeth 511 and a toothless arc 512, so that the arc-shaped matched teeth are meshed with the main switching gear 52 or the auxiliary switching gear 53 on one side only when rotating. As shown in fig. 5, when the rotating shaft 0 rotates clockwise, the arc-shaped matching teeth 511 and the auxiliary switching gear 53 below are engaged and driven to drive the moving contact matched with the auxiliary switching gear 53 to switch on, and the tooth-free arc 512 does not contact with the main switching gear 52 above; when the rotating shaft 0 reversely resets, the auxiliary switching gear 53 is driven to reset. When the rotating shaft 0 rotates anticlockwise, the arc-shaped matching teeth 511 are meshed with the main switching gear 52 above to drive the moving contact matched with the main switching gear 52 to be switched on, and the toothless arc 512 does not contact through the auxiliary switching gear 53 below; when the rotating shaft 0 reversely resets, the main switching gear 52 is driven to reset. The structure is good, the two paths of moving contacts are driven respectively and are not interfered with each other, the occupied space is small structurally, and the whole volume is effectively reduced.
As an improved specific embodiment, the main switching gear 52 and the auxiliary switching gear 53 are respectively provided with a return spring 54, one ends of the two groups of return springs 54 are respectively connected with the main switching gear 52 and the auxiliary switching gear 53, the other ends of the two groups of return springs are fixed with the mounting frame 1, the return springs 54 are stretched or compressed when the main switching gear 52 or the auxiliary switching gear 53 is driven to rotate by the central gear 51, and the return springs 54 provide a return force for the main switching gear 52 or the auxiliary switching gear 53 when the central gear 51 returns.
As shown in fig. 5, by the above embodiment, a more stable restoring force is provided to the main switching gear 52 and the sub switching gear 53, which is advantageous in ensuring that the main switching gear 52 and the sub switching gear 53 are restored to the original positions; on the other hand, the sun gear 51 can be driven to recover at the same time, so that the smoothness and stability of the reset of the rotating shaft 0 are ensured.
As an improved specific embodiment, the main switching gear 52 and the auxiliary switching gear 53 are both provided with a stop block 55, the mounting frame 1 is provided with a stop post 14 which is matched and abutted with the stop block 55, and the abutting positions of the stop block 55 and the stop post 14 are set to be that the stop block 55 and the stop post 14 are abutted when the main switching gear 52 and the auxiliary switching gear 53 are driven by the reset spring 54 to reset to the initial positions.
As shown in fig. 5, on the basis of the return spring 54, a stop block 55 is arranged to be matched with the baffle column 14 on the mounting frame 1, so that the main switching gear 52 and the auxiliary switching gear 53 which are subjected to the restoring force of the return spring 54 can accurately return to the initial positions; the main switching gear 52 and the auxiliary switching gear 53 can rotate along one direction and stretch the return spring 54, and after the return to the position, the stop block 55 is limited by the stop post 14, so that the accurate positions of the main switching gear 52 and the auxiliary switching gear 53 are ensured.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (10)
1. The utility model provides a change over switch's three position divide-shut brake operating device, includes pivot (0) that are externally connected to contact system, its characterized in that: the device also comprises a mounting frame (1), a translation assembly (2), a clamping assembly (3) and a coil assembly (4); the translation assembly (2) comprises a translation shaft (21), a swing arm (22) and a limiting piece (23), wherein the translation shaft (21) can horizontally slide and is arranged on the mounting frame (1), the swing arm (22) is rotatably arranged on the mounting frame (1), the translation shaft (21) and the swing arm (22) are mutually linked, and the swing arm (22) and the rotating shaft (0) are in linkage rotation; the coil group (4) comprises closing coils (41) positioned at two axial sides of the translation shaft (21) and opening coils (42) positioned at the sides of the translation shaft (21), the end part of the translation shaft (21) is a magnetically attractable attraction part (211), the attraction part (211) is sleeved in the closing coils (41), and when one side closing coil (41) is electrified, magnetic force is generated to attract the side attraction part (211); the clamping assembly (3) comprises a clamping plate (31) and an elastic piece (32), three clamping grooves (311) are formed in the clamping plate (31) along the axial direction of the translation shaft (21), the three clamping grooves (311) are communicated through a movable groove (312), the limiting piece (23) is located in the movable groove (312) and clamped in the three clamping grooves (311) when the translation shaft (21) translates in place, the three clamping grooves (311) correspond to the closing position of the left part and the right part and the opening position of the middle part, the elastic piece (32) elastically supports the clamping groove (311) against the clamping plate (31) to be clamped with the limiting piece (23), the clamping plate (31) moves to compress the elastic piece (32) to enable the limiting piece (23) to be separated from the clamping groove (311) to reach the movable groove (312), the clamping plate (31) is connected with a magnetically attractive actuating shaft (310), and the actuating shaft (310) is sleeved in a brake separating coil (42) to generate magnetic force to attract the actuating shaft (310) when the brake separating coil (42) is electrified, and the clamping plate (31) is driven to move.
2. The three-position opening and closing operating mechanism of a transfer switch as claimed in claim 1, wherein: the rotatable setting of pivot (0) is on mounting bracket (1) and is as the rotation axis of swing arm (22), locating part (23) are cylindricality and wear to locate on translation axle (21), the lower part of swing arm (22) has a first kidney-shaped hole (221) that supplies translation axle (21) to pass, translation axle (21) and swing arm (22) link with the cooperation in first kidney-shaped hole (221) through locating part (23).
3. The three-position opening and closing operating mechanism of a transfer switch as claimed in claim 2, wherein: the limiting piece (23) comprises a column body (231) and column sleeves (232), the lower portion of the swing arm (22) is U-shaped, symmetrical first kidney-shaped holes (221) are formed in two sides of the swing arm, the column body (231) is arranged on the translation shaft (21) in a penetrating mode and penetrates through the first kidney-shaped holes (221) in two sides of the translation shaft (21), the mounting frame (1) is provided with sliding grooves (11) in two sides of the translation shaft (21), the column sleeves (232) are sleeved at two ends of the column body (231), the column sleeves (232) are matched in the sliding grooves (11) to slide and extend into clamping grooves (311) and movable grooves (312) to be matched, annular platforms (233) with outer diameters larger than that of column sleeve (232) bodies are arranged on the inner sides of the column sleeves (232), and the sizes of the annular platforms (233) are larger than those of the first kidney-shaped holes (221) in two sides and the sliding grooves (11) in size to limit the column sleeves (232).
4. The three-position opening and closing operating mechanism of a transfer switch as claimed in claim 2, wherein: an adjusting hole (222) for inserting an external handle is formed in the upper portion of the swing arm (22).
5. A three-position opening and closing operating mechanism for a transfer switch as claimed in claim 2, 3 or 4, wherein: the automatic switching device is characterized in that a lug (01) is arranged on the rotating shaft (0), micro-switches (02) are arranged on the mounting frame (1) at two sides opposite to the rotating shaft (0), when the translation shaft (21) is located at the switching-off position, the lug (01) is located at the middle position and separated from the micro-switches (02), and when the translation shaft (21) is located at the switching-on position, the lug (01) rotates to the left side or the right side from the rotating shaft (0) to contact and trigger the micro-switches (02).
6. The three-position opening and closing operating mechanism of a transfer switch as claimed in claim 1 or 2 or 3 or 4, wherein: the clamping plate (31) comprises a transverse plate (314) and a vertical plate (313) which are connected with each other, the clamping groove (311) and the movable groove (312) are positioned on the vertical plate (313), the vertical plate (313) and a part of the installation frame (1) are adjacently and parallelly arranged, a plurality of second kidney-shaped holes (315) are formed in the vertical plate (313), a plurality of limit posts (12) which are used for being matched with the plurality of second kidney-shaped holes (315) are arranged on the installation frame (1), limit pieces (13) are arranged at the outer ends of the limit posts (12) towards the vertical plate (313) to enable the vertical plate (313) to be installed on the side edge of the installation frame (1), and the direction of the second kidney-shaped holes (315) is consistent with the axial direction of the suction shaft (310); the transverse plate (314) extends outwards relative to the vertical plate (313) and is fixedly arranged with the suction shaft (310).
7. The three-position opening and closing operating mechanism of a transfer switch as claimed in claim 6, wherein: the elastic piece (32) is sleeved on the outer side of the suction shaft (310), the upper end of the elastic piece is propped against the transverse plate (314), and the lower end of the elastic piece is propped against the mounting frame (1).
8. The three-position opening and closing operating mechanism of a transfer switch as claimed in claim 1 or 2 or 3 or 4, wherein: the contact switching mechanism (5) is further arranged between the rotating shaft (0) and the contact system, the contact switching mechanism (5) comprises a central gear (51), and a main switching gear (52) and a secondary switching gear (53) which are respectively connected with a main moving contact and a secondary moving contact in the contact system, the central gear (51) is arranged on the rotating shaft (0) for linkage, the periphery of the central gear (51) is provided with one section of arc-shaped matched teeth (511) and one section of toothless arcs (512), the main switching gear (52) and the secondary switching gear (53) are respectively positioned at the junction positions of the upper arc-shaped matched teeth (511) and the lower arc-shaped matched teeth (512), when the central gear (51) rotates positively or reversely, the arc-shaped matched teeth (511) are turned to the main switching gear (52) or the secondary switching gear (53) for meshing transmission, and the toothless arcs (512) on the other side are turned to the secondary switching gear (53) or the main switching gear (52) for no contact.
9. The three-position opening and closing operating mechanism of a transfer switch as claimed in claim 8, wherein: the main switching gear (52) and the auxiliary switching gear (53) are respectively provided with a reset spring (54), one ends of the two groups of reset springs (54) are respectively connected with the main switching gear (52) and the auxiliary switching gear (53), the other ends of the two groups of reset springs are fixed with the mounting frame (1), when the main switching gear (52) or the auxiliary switching gear (53) is driven by the central gear (51) to rotate, the reset springs (54) stretch or compress the reset springs (54), and when the central gear (51) returns, the reset springs (54) provide a reset force for the main switching gear (52) or the auxiliary switching gear (53).
10. The three-position opening and closing operating mechanism of a transfer switch as claimed in claim 9, wherein: the main switching gear (52) and the auxiliary switching gear (53) are respectively provided with a stop block (55), the mounting frame (1) is provided with a stop post (14) which is matched and abutted with the stop block (55), and the abutting positions of the stop block (55) and the stop post (14) are set as that the main switching gear (52) and the auxiliary switching gear (53) are driven by a reset spring (54) to reset to the initial positions, and the stop block (55) and the stop post (14) are abutted.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811078987.3A CN109243878B (en) | 2018-09-14 | 2018-09-14 | Three-position opening and closing operating mechanism of change-over switch |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811078987.3A CN109243878B (en) | 2018-09-14 | 2018-09-14 | Three-position opening and closing operating mechanism of change-over switch |
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| CN109243878A CN109243878A (en) | 2019-01-18 |
| CN109243878B true CN109243878B (en) | 2023-10-20 |
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| CN201811078987.3A Active CN109243878B (en) | 2018-09-14 | 2018-09-14 | Three-position opening and closing operating mechanism of change-over switch |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109659169B (en) * | 2019-02-28 | 2024-08-20 | 国网安徽省电力有限公司培训中心 | Novel switching on/off switch device of high-voltage switch cabinet |
| CN110703659B (en) * | 2019-10-28 | 2020-12-01 | 北京动力机械研究所 | Three-position switching electric mechanism control device |
| CN113643926B (en) * | 2021-09-06 | 2024-03-01 | 杭州玖熠信息科技有限公司 | Auxiliary grounding switch of environment-friendly gas-insulated ring main unit |
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| CN109243878A (en) | 2019-01-18 |
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Address after: 325600 No. 205-26, Wei12 Road, Yueqing Economic Development Zone, Wenzhou City, Zhejiang Province Applicant after: ZHEJIANG MOTE ELECTRIC Co.,Ltd. Address before: 325604 Export-oriented Industrial Zone of Liushi Town, Yueqing City, Wenzhou City, Zhejiang Province Applicant before: ZHEJIANG MOTE ELECTRIC Co.,Ltd. |
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