CN214624806U

CN214624806U - Novel positive and negative motor change over switch

Info

Publication number: CN214624806U
Application number: CN202120919286.9U
Authority: CN
Inventors: 孙杰
Original assignee: Jiangsu Youpin Electric Co ltd
Current assignee: Jiangsu Youpin Electric Co ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-11-05
Anticipated expiration: 2031-04-29

Abstract

The utility model discloses a novel just reversing motor change over switch in the motor field just reverses, including wiring portion, wiring portion includes three lugs one, and lug one is used for communicateing three phase power's live wire and just reversing motor, and lug one includes the static contact, movable contact one, movable contact two, inlet wire end, leading-out terminal one and leading-out terminal two, and the static contact is connected with the inlet wire end, and movable contact one end is connected with leading-out terminal one, and the other end is used for being connected with the static contact, and two one ends of movable contact are connected with leading-out terminal two, and the other end is used for being connected with the static contact. The utility model discloses replaced two control switch in the prior art and a contactor and realized the mode that just reversal motor switched, reduced the preparation of electrical part, used and maintenance cost, realized just reversal motor switching circuit switch's intensification, contact coil has lasted the electricity and has generated the problem of power consumption when effectively having solved the contactor action simultaneously.

Description

Novel positive and negative motor change over switch

Technical Field

The utility model relates to a positive reverse motor technical field, in particular to novel positive reverse motor change over switch.

Background

The motor rotates clockwise and counterclockwise, which means that the motor rotates clockwise and counterclockwise. The clockwise rotation of the motor is the forward rotation of the motor, and the anticlockwise rotation of the motor is the reverse rotation of the motor. The forward and reverse rotation of motors is widely used, for example, in traveling cranes, electric planing machines for woodworking, bench drills, filament cutters, spin dryers, lathes, and the like.

In the existing forward and reverse rotation reversing motor, a control circuit of the existing forward and reverse rotation reversing motor usually needs to change the phase sequence of a three-phase power supply of the motor through two contactors or two control and protection switches, so that the forward and reverse rotation of the motor can be reversed.

However, the control circuit of the forward and reverse rotating motor at present has the following problems: the electrical appliance has more elements and occupies large space, so that the volume of the electrical cabinet is large; the primary wire and the secondary wire have more contacts, so that the wiring cost is high; the two switches are in linkage fit, so that the requirement on consistency is high; meanwhile, the number of electric devices and wiring points is large, so that the number of easily generated fault points is large, and the problem troubleshooting difficulty is large; when the contactor acts, the contact coil is continuously electrified to generate magnetic force, so that the problems of energy consumption and heating caused by the counterforce of the spring are solved.

SUMMERY OF THE UTILITY MODEL

This application is through providing a novel just reversal motor change over switch for solve or the problem that just reversal motor control circuit exists among the partial solution prior art.

The embodiment of the application provides a novel positive and negative motor change over switch that changes, including wiring portion, wiring portion includes three lugs one, a lug one is used for communicateing three phase power's live wire and positive and negative motor that changes, a lug includes static contact, movable contact one, movable contact two, inlet wire end, leading-out terminal one and leading-out terminal two, the static contact with the inlet wire end is connected, movable contact one end with leading-out terminal one passes through the wire flexonics, the other end be used for with the static contact is connected, two one ends of movable contact with the leading-out terminal two is crossed the wire flexonics, the other end be used for with the static contact is connected.

The beneficial effects of the above embodiment are as follows: the wire inlet end, the static contact, the movable contact I and the wire outlet end of the three first wiring lugs commonly form a main loop, the wire inlet end, the static contact, the movable contact II and the wire outlet end commonly form another main loop, and the two main loops of the other main loop are respectively used for connecting the U/V/W and the W/V/U of a forward and reverse rotating motor load, wherein when one main loop connected with the motor load U/V/W is conducted and the other main loop is disconnected, the motor runs in the forward direction, and when one main loop connected with the motor load W/V/U is conducted and the other main loop is disconnected, the motor runs in the reverse direction; compared with the mode that two control switches or contactors in the prior art realize the switching of the forward and reverse rotating motor, the novel forward and reverse rotating motor change-over switch replaces two original electrical functional parts with one electrical part, reduces the occupied space of electrical parts on the basis of ensuring the original forward and reverse rotating switching function, simplifies connecting lines between the electrical parts, reduces the fault occurrence probability and the overhauling difficulty, and greatly reduces the manufacturing and using cost of the forward and reverse rotating motor change-over switch.

On the basis of the above embodiments, the present application can be further improved, specifically as follows:

in one embodiment of the present application, the first terminal strip further includes a housing, the fixed contact, the incoming line end, the first outgoing line end and the second outgoing line end are fixedly connected to the housing, one end of the first moving contact connected to the first outgoing line end is coupled to the housing, the other end of the first moving contact may abut against the fixed contact, one end of the second moving contact connected to the second outgoing line end is coupled to the housing, and the other end of the second moving contact may abut against the fixed contact. The moving contact I and the moving contact II can be switched in a state of being connected with the fixed contact or being vacant through the rotation of the corresponding shafts respectively.

In one embodiment of the present application, contacts are respectively disposed at two ends of the fixed contact, the first moving contact and the second moving contact are oppositely disposed at two ends of the fixed contact, and an arc extinguishing member is disposed between the first moving contact, the second moving contact and the fixed contact. The arc extinguishing piece is used for guiding and discharging contact electric arc, and the moving contact I and the moving contact II are arranged oppositely, so that the overall size of the lug plate is reduced due to reasonable layout.

In one embodiment of this application, novel just reversing motor change over switch still includes control part and drive mechanism, three in the wiring portion the lug is arranged in a row and the rigid coupling in the control part, drive mechanism is used for connecting in the control part actuating mechanism with movable contact one in the wiring portion, movable contact two, actuating mechanism in the control part passes through the drive mechanism drive movable contact one, the synchronous rotation of movable contact two. The first moving contact and the second moving contact synchronously rotate so as to ensure that one loop is connected and the other loop is disconnected.

In one embodiment of the present application, the transmission mechanism includes a plurality of first shift levers and second shift levers, a first connecting shaft, and a second connecting shaft, the first shift levers and the second shift levers correspond to the first terminal pads one by one and are disposed in the housing, the middle portions of the first shift levers and the second shift levers are respectively coupled to the housing, one end of each shift lever is hinged to the first moving contact for driving the first moving contact to rotate, one end of each shift lever is hinged to the second moving contact for driving the second moving contact to rotate, one end of each connecting shaft traverses the wiring portion and is inserted into the middle portion of the coupling between the first shift lever and the housing for driving the first shift lever to rotate, the other end of each connecting shaft is connected to the driving mechanism in the control portion, one end of each connecting shaft traverses the wiring portion and is inserted into the middle portion of the coupling between the second shift lever and the housing for driving the second shift levers to rotate, the other end of the connecting shaft II is connected with a driving mechanism in the control part, and the driving mechanism in the control part is used for driving the connecting shaft I and the connecting shaft II to synchronously rotate relatively so as to drive the movable contact I and the movable contact II to synchronously rotate. The same driving mechanism drives the first moving contact and the second moving contact to synchronously act, so that linkage cooperation of multiple switches is omitted, and switching consistency of two loops is guaranteed.

In one embodiment of the present application, the first shift lever and the second shift lever have two-color codes at ends thereof, and the housing has a through hole at a position corresponding to the two-color codes. The color code colors of the first shifting lever and the second shifting lever can be directly observed through the through holes, and the rotating positions of the first shifting lever and the second shifting lever are judged through different colors, so that the current wiring mode of the wiring part, namely the working state of the motor, is conveniently judged.

In one embodiment of this application, the wiring portion further includes a second terminal lug, the second terminal lug is used for communicating the neutral line of the three-phase power supply and the positive and negative rotating motor, and the second terminal lug are the same in structure. The second lug has the same structure as the lug, so that the manufacturing and die sinking cost of parts is reduced.

In one embodiment of the application, the driving mechanism comprises a supporting plate, a triggering assembly, a switching assembly, a first shifting piece and a second shifting piece, the triggering assembly comprises an electromagnet, a mandril, a shifting block, a pin shaft and a connecting rod, and the switching assembly comprises a rotary plate, a blocking piece, a fixed seat, a connecting piece and a spring piece; the supporting plate is provided with a V-shaped guide groove, the electromagnet is arranged in the guide sleeve, one end of the ejector rod is arranged in the guide sleeve, a pressure spring is arranged between the ejector rod and the electromagnet, the other end of the ejector rod is hinged with one end of the shifting block, the middle part of the shifting block is connected to the supporting plate in a shaft mode, the other end of the shifting block is connected with the pin shaft, one end of the connecting rod is hinged with the pin shaft, the other end of the connecting rod is provided with a guide post, and the guide post is located in the V-shaped guide groove; the rotating disc and the blocking piece are coaxially coupled to the supporting plate, a limiting groove is formed in the upper portion of the rotating disc, a notch is formed in the lower portion of the rotating disc, the guide post is located in the notch, a limiting post is arranged at the upper end of the blocking piece and located in the limiting groove, a forward projection portion of the bottom of the lower end of the blocking piece shields a forward projection of the V-shaped guide groove, a gap exists between the forward projection portion and the inner wall of the V-shaped guide groove, the fixing seat is fixed to the supporting plate, one end of the elastic piece is fixed to the supporting plate, the other end of the elastic piece is connected with the fixing seat through a spring, one end of the connecting piece is hinged to the rotating disc, the other end of the connecting piece is hinged to the elastic piece, one end of the first shifting piece and one end of the second shifting piece are respectively and coaxially provided with shaft holes corresponding to the first connecting shaft and the second connecting shaft, and the other ends of the first shifting piece and the second shifting piece are respectively provided with waist holes, the guide post is simultaneously positioned in the waist holes of the first shifting piece and the second shifting piece. The driving mechanism has two states of normal driving and triggering driving, wherein in the normal state: the electromagnet is not electrified, the push rod enables one end, provided with the pin shaft, of the shifting block to keep an upward posture under the action of the pressure spring, so that the guide post is located at the top of one end of the V-shaped guide groove, the bottom of the lower end of the blocking piece is located at one end, where the guide post is located, of the V-shaped guide groove, meanwhile, the first shifting piece and the second shifting piece are kept immovable, and the first connecting shaft and the second connecting shaft which are connected with the first shifting piece and the second shifting piece are kept immovable; when the driving is triggered: the electromagnet is powered on temporarily, the elastic force of a compression spring is overcome to cause the ejector rod to contract, so that the shifting block rotates, one end of the shifting block, which is provided with a pin shaft, moves downwards, the guide post moves downwards along the V-shaped guide groove and abuts against the bottom of the lower end of the separation blade in the moving process, the separation blade and the rotary disc are forced to rotate at a small angle, the guide post is separated from the bottom of the lower end of the separation blade and then is positioned at the bottom of the V-shaped guide groove, under the action of the spring and the elastic sheet, the rotary disc drives the separation blade to return to the original position, the separation blade continuously and partially shields the V-shaped guide groove at the end, one of the first shifting sheet and the second shifting sheet is kept still during the downward movement of the guide post, the other shifting sheet rotates correspondingly, then the electromagnet is powered off, the ejector rod extends under the action of the compression spring, so that the shifting block reversely rotates, one end, which is provided with the pin shaft, the guide post moves upwards along the V-shaped guide groove at the one end of the separation blade is partially shielded at the moment, the guide post pushes against the bottom of the lower end of the separation blade to move to the other end of the V-shaped guide groove and is positioned at the top of the other end of the V-shaped guide groove in the moving process, one of the corresponding first shifting sheet and the second shifting sheet correspondingly rotates, the other shifting sheet is kept still, meanwhile, the guide post pushes the turntable to push the turntable to rotate, the turntable drives the separation blade to rotate, so that the bottom of the lower end of the separation blade moves and partially shields the other end of the V-shaped guide groove, the connecting piece overcomes the pressure of the spring and the elastic sheet during the rotation of the turntable and drives the turntable to reversely rotate towards the opposite direction, preparation is made for next trigger driving, and the guide post enters a conventional state after the movement is stopped; therefore, the driving mechanism triggers the driving process once, the first shifting piece and the second shifting piece rotate in the same direction for a set angle, the driving requirements of the first connecting shaft and the second connecting shaft are met, the first connecting shaft and the second connecting shaft rotate for a specific angle and are kept, the electromagnet needs to be powered only in the triggering driving process, the electromagnet does not need to be powered in a conventional state, and the problem that when an original contactor acts, the contact coil continuously powers on electricity and generates heat to consume energy is solved.

In one embodiment of the present application, the supporting plate is provided with a limiting hole, and the limiting post is located in the limiting hole. Prevent that carousel and separation blade from excessively rotating to the position of accurate location separation blade bottom in V type guide way.

One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

1. compared with the mode that the switching of the forward and reverse rotating motor is realized by the original two control switches or contactors in the prior art, the novel forward and reverse rotating motor switching switch replaces the original two electric devices by one electric device, so that the occupied space of the electric devices is greatly reduced, the layout of the electric devices and the structure of an electric device box are intensified, and the manufacturing and using cost is greatly reduced;

2. the structure that the contact is locked and closed is adopted, so that the working mode that the existing switch contact is continuously attracted by the power on of the electromagnetic coil is cancelled, and the problem that the energy consumption is generated due to the continuous power on and heating of the contact coil when the original contactor acts is solved;

3. through the structure of intensification, simplified the connecting wire between the electrical part by a wide margin, made the cost and the fault incidence of switching circuit to and overhaul the degree of difficulty and effectively reduced, thereby reduced the maintenance cost by a wide margin.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of another view angle of the present invention;

fig. 3 is a schematic top view of the present invention;

FIG. 4 is a first schematic view of an internal structure of a wire connecting piece;

FIG. 5 is a second schematic view of the internal structure of the first terminal;

FIG. 6 is a perspective view of the driving mechanism;

FIG. 7 is a first schematic front view of the driving mechanism;

FIG. 8 is a second schematic front view of the driving mechanism;

FIG. 9 is a first schematic rear view of the driving mechanism;

FIG. 10 is a second schematic rear view of the driving mechanism;

fig. 11 is an exploded view of the trigger assembly.

The automatic switching device comprises a first 100 lug, a second 101 shell, a fixed contact 102, a first 103 moving contact, a second 104 moving contact, a wire inlet end 105, a first 106 wire outlet end, a second 107 wire outlet end, an arc extinguishing member 108, a through hole 109, a second 200 lug, a control part 2, a first 31 deflector rod, a second 32 deflector rod, a first 33 connecting shaft, a second 34 connecting shaft, a support plate 4, a V-shaped guide groove 41, a limiting hole 42, a trigger assembly 5, an electromagnet 51, a 52 ejector rod, a 53 deflector block, a 54 pin shaft, a 55 connecting rod 551, a guide post, a 56 guide sleeve 57, a pressure spring 6, a switching assembly 61, a rotating disc 611, a limiting groove 62, a baffle plate 621, a limiting post, a 63 fixing seat, a 64 connecting piece, a 65 spring plate, a 66 spring, a 7 deflector plate I, 71 shaft holes, a 72 kidney hole and a second 8 deflector plate.

Detailed Description

The present invention will be further explained with reference to the following embodiments, which are to be understood as illustrative only and not as limiting the scope of the invention, and modifications of the various equivalent forms of the present invention by those skilled in the art after reading the present invention fall within the scope of the appended claims.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "vertical" and "outer peripheral surface" are used to indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the product of the present invention is usually placed when in use, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to be referred must have a specific position, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the term "vertical" or the like does not imply that the components are required to be absolutely horizontal or overhanging, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples and features of the various embodiments or examples described herein can be combined and combined by those skilled in the art without conflicting aspects.

Example (b):

as shown in fig. 1-5, a novel forward and reverse rotating motor change-over switch comprises a wiring part, a control part 2 and a transmission mechanism;

the wiring part is fixedly connected with the control part 2, the wiring part is used for communicating a three-phase power supply and a motor rotating in forward and reverse directions, the wiring part comprises a first wiring sheet 100 and a second wiring sheet 200 which are arranged side by side, the first wiring sheet 100 comprises a shell 101, a fixed contact 102, a first moving contact 103, a second moving contact 104, a wire inlet end 105, a first wire outlet end 106 and a second wire outlet end 107, the fixed contact 102 is fixedly connected with the wire inlet end 105, one end of the first moving contact 103 is flexibly connected with the first wire outlet end 106 through a conducting wire (not shown in the figure), the other end of the first moving contact is connected with the fixed contact 102, one end of the second moving contact 104 is flexibly connected with the second wire outlet end 107 through a conducting wire (not shown in the figure), the other end of the fixed contact 102, the wire inlet end 105, the first wire outlet end 106 and the second wire outlet end 107 are fixedly connected with the shell 101, one end of the first moving contact 103 connected with the wire outlet end 106 is axially connected with the shell 101, one end of the second moving contact 104 connected with the second wire outlet end 107 is axially connected with the shell 101, contacts are respectively arranged at two ends of a fixed contact 102, a first moving contact 103 and a second moving contact 104 are oppositely arranged at two ends of the fixed contact 102, an arc extinguishing member 108 is arranged among the first moving contact 103, the second moving contact 104 and the fixed contact 102, and a wire inlet end 105, a wire outlet end I106 and a wire outlet end II 107 are mutually insulated; the second wiring lug 200 is used for communicating a neutral line of a three-phase power supply and a positive and negative rotating motor, and the second wiring lug 200 and the first wiring lug 100 are identical in structure;

the transmission mechanism comprises a plurality of first shift levers 31, second shift levers 32, a first connecting shaft 33 and a second connecting shaft 34, the first shift levers 31, the second shift levers 32, the first lugs 100 and the second lugs 200 are in one-to-one correspondence and are respectively arranged in the shell 101, the middle parts of the first shift levers 31 and the second shift levers 32 are respectively in shaft connection with the shell 101, one end of each first shift lever 31 is hinged with the first moving contact 103 and is used for driving the first moving contact 103 to rotate, one end of each second shift lever 32 is hinged with the second moving contact 104 and is used for driving the second moving contact 104 to rotate, one end of each first connecting shaft 33 traverses the wiring part and is inserted in the middle part of the shaft connection between the first shift levers 31 and the shell 101 and is used for driving the first shift levers 31 to rotate, the other end of each first connecting shaft 33 is connected with the driving mechanism in the control part 2, one end of each second connecting shaft 34 traverses the wiring part and is inserted in the middle part of the shaft connection between the second connecting shaft 32 and the shell 101 and is used for driving the second shift levers 32 to rotate, the other ends of the second shift levers 34 are connected with the driving mechanism in the control part 2, the driving mechanism in the control part 2 drives the first movable contact 103 and the second movable contact 104 to rotate by driving the first connecting shaft 33 and the second connecting shaft 34 to synchronously rotate.

In addition, the other end parts of the first shifting lever 31 and the second shifting lever 32 are respectively provided with a bicolor color code, the shell is provided with a through hole 109 at the position corresponding to the bicolor color code, the color code colors of the end parts of the first shifting lever 31 and the second shifting lever 32 can be directly observed through the through hole 109, and the rotating positions of the first shifting lever 31 and the second shifting lever 32 are judged through different colors, so that the current wiring mode of a wiring part and the working state of a motor are conveniently judged.

As shown in fig. 6-11, the driving mechanism includes a supporting plate 4, a triggering assembly 5, a switching assembly 6, a first shifting piece 7 and a second shifting piece 8, the triggering assembly 5 includes an electromagnet 51, a push rod 52, a shifting block 53, a pin 54 and a connecting rod 55, the switching assembly 6 includes a turntable 61, a blocking piece 62, a fixed seat 63, a connecting piece 64 and a spring piece 65; the supporting plate 4 is provided with a V-shaped guide groove 41 and a limiting hole 42, the electromagnet 51 is arranged in the guide sleeve 56, one end of the ejector rod 52 is arranged in the guide sleeve 56, a pressure spring 57 is arranged between the ejector rod 52 and the electromagnet 51, the other end of the ejector rod 52 is hinged with one end of the shifting block 53, the middle part of the shifting block 53 is connected to the supporting plate 4 in a shaft coupling mode, the other end of the shifting block 53 is connected with a pin shaft 54, one end of the connecting rod 55 is hinged with the pin shaft 54, the other end of the connecting rod 55 is provided with a guide post 551, and the guide post 551 is located in the V-shaped guide groove 41; the turntable 61 and the blocking piece 62 are coaxially and axially connected to the support plate 4, the upper portion of the turntable 61 is provided with a limiting groove 611, a notch is formed in the lower portion of the turntable 61, the guide post 551 is simultaneously located in the notch, the upper end of the blocking piece 62 is provided with a limiting post 621, the limiting post 621 is simultaneously located in the limiting hole 42 and the limiting groove 611, the forward projection part at the bottom of the lower end of the blocking piece 62 shields the forward projection of the V-shaped guide groove 41 and has a gap with the inner wall of the V-shaped guide groove 41, the fixing seat 63 is fixed to the support plate 4, one end of the elastic piece 65 is fixed to the support plate 4, the other end of the elastic piece is connected with the fixing seat 63 through the spring 66, one end of the connecting piece 64 is hinged to the turntable 61, the other end of the connecting piece 64 is hinged to the elastic piece 65, one ends of the first shifting piece 7 and the second shifting piece 8 are respectively and axially connected to the support plate 4 and are respectively and coaxially provided with shaft holes 71 corresponding to the first connecting shaft and the second shaft, the other ends of the first shifting piece 7 and the second shifting piece 8 are respectively provided with waist holes 72, and the guide post 551 is simultaneously.

The driving mechanism has two states of normal driving and triggering driving, wherein in the normal state: the electromagnet is not electrified, the push rod enables one end, provided with the pin shaft, of the shifting block to keep an upward posture under the action of the pressure spring, so that the guide post is located at the top of one end of the V-shaped guide groove, the bottom of the lower end of the blocking piece is located at one end, where the guide post is located, of the V-shaped guide groove, meanwhile, the first shifting piece and the second shifting piece are kept immovable, and the first connecting shaft and the second connecting shaft which are connected with the first shifting piece and the second shifting piece are kept immovable; when the driving is triggered: the electromagnet is powered on temporarily, the elastic force of a compression spring is overcome to cause the ejector rod to contract, so that the shifting block rotates, one end of the shifting block, which is provided with a pin shaft, moves downwards, the guide post moves downwards along the V-shaped guide groove and abuts against the bottom of the lower end of the separation blade in the moving process, the separation blade and the rotary disc are forced to rotate at a small angle, the guide post is separated from the bottom of the lower end of the separation blade and then is positioned at the bottom of the V-shaped guide groove, under the action of the spring and the elastic sheet, the rotary disc drives the separation blade to return to the original position, the separation blade continuously and partially shields the V-shaped guide groove at the end, one of the first shifting sheet and the second shifting sheet is kept still during the downward movement of the guide post, the other shifting sheet rotates correspondingly, then the electromagnet is powered off, the ejector rod extends under the action of the compression spring, so that the shifting block reversely rotates, one end, which is provided with the pin shaft, the guide post moves upwards along the V-shaped guide groove at the one end of the separation blade is partially shielded at the moment, the guide post pushes against the bottom of the lower end of the separation blade to move to the other end of the V-shaped guide groove and is positioned at the top of the other end of the V-shaped guide groove in the moving process, one of the corresponding first shifting sheet and the second shifting sheet correspondingly rotates, the other shifting sheet is kept still, meanwhile, the guide post pushes the turntable to push the turntable to rotate, the turntable drives the separation blade to rotate, so that the bottom of the lower end of the separation blade moves and partially shields the other end of the V-shaped guide groove, the connecting piece overcomes the pressure of the spring and the elastic sheet during the rotation of the turntable and drives the turntable to reversely rotate towards the opposite direction, preparation is made for next trigger driving, and the guide post enters a conventional state after the movement is stopped; therefore, the driving mechanism triggers the driving process once, the first shifting piece and the second shifting piece rotate in the same direction for a specific angle, the driving requirements of the first connecting shaft and the second connecting shaft are met, the first connecting shaft and the second connecting shaft rotate for the specific angle and are kept, the electromagnet needs to be powered only in the triggering driving process, the electromagnet does not need to be powered in a conventional state, and the problem that when an original contactor acts, the contact coil continuously powers on the electromagnet and generates heat to consume energy is solved.

The three wiring terminals of the first wiring sheet are respectively connected with L1/L2/L3 of a three-phase power supply, the corresponding first wiring terminals are respectively and correspondingly connected with a motor load U/V/W, and the corresponding second wiring terminals are respectively and correspondingly connected with a motor load W/V/U; as shown by the arrows in fig. 4, when the moving contact I is connected with the fixed contact and the moving contact II is idle, the three-phase power supply L1/L2/L3 is respectively communicated with the motor load U/V/W, so that the motor works in the forward rotation direction, and as shown by the arrows in fig. 5, when the moving contact I is idle and the moving contact II is connected with the fixed contact, the three-phase power supply L1/L2/L3 is respectively communicated with the motor load W/V/U, so that the motor works in the reverse rotation direction.

The technical scheme in the embodiment of the application at least has the following technical effects or advantages:

Claims

1. The utility model provides a novel positive reverse motor change over switch, a serial communication port, including wiring portion, wiring portion includes three lugs one, lug one is used for the live wire that feeds through three phase current and positive reverse motor, lug one includes static contact, movable contact one, moving contact two, inlet wire end, leading-out terminal one and leading-out terminal two, the static contact with the inlet wire end is connected, movable contact one end with leading-out terminal one passes through the wire flexible coupling, the other end be used for with the static contact is connected, two one ends of moving contact with the leading-out terminal two is crossed the wire flexible coupling, the other end be used for with the static contact is connected.

2. The novel forward and reverse rotating motor change-over switch according to claim 1, characterized in that: the first wiring piece further comprises a shell, the fixed contact, the wire inlet end, the first wire outlet end and the second wire outlet end are fixedly connected to the shell, one end, connected with the first wire outlet end, of the first movable contact is connected to the shell in a shaft mode, the other end of the first movable contact can abut against the fixed contact, one end, connected with the second wire outlet end, of the second movable contact is connected to the shell in a shaft mode, and the other end of the second movable contact can abut against the fixed contact.

3. The novel forward and reverse rotating motor change-over switch according to claim 2, characterized in that: contacts are arranged at two ends of the static contact respectively, the first moving contact and the second moving contact are oppositely arranged at two ends of the static contact, and arc extinguishing pieces are arranged between the first moving contact, the second moving contact and the static contact.

4. The novel forward and reverse rotating motor change-over switch according to claim 2, characterized in that: novel just reversing motor change over switch still includes control part and drive mechanism, three in the wiring portion the lug arrange in a row and the rigid coupling in the control part, drive mechanism is used for connecting actuating mechanism in the control part with movable contact one in the wiring portion, movable contact two, actuating mechanism in the control part passes through the drive mechanism drive movable contact one, the synchronous rotation of movable contact two.

5. The novel forward and reverse rotating motor change-over switch according to claim 4, characterized in that: the transmission mechanism comprises a plurality of first shift levers, a plurality of second shift levers, a first connecting shaft and a second connecting shaft, the first shift levers and the second shift levers correspond to the first lugs one by one and are arranged in the shell, the middle parts of the first shift levers and the second shift levers are respectively connected with the shell in a shaft way, one end of each shift lever is hinged with the first moving contact and is used for driving the first moving contact to rotate, one end of each shift lever is hinged with the second moving contact and is used for driving the second moving contact to rotate, one end of each connecting shaft penetrates through the wiring part and is inserted in the middle part of the shaft joint of the first shift lever and the shell and is used for driving the first shift lever to rotate, the other end of each connecting shaft is connected with a driving mechanism in the control part, one end of each connecting shaft penetrates through the wiring part and is inserted in the middle part of the shaft joint of the second shift levers and the shell and is used for driving the second shift levers to rotate, the other end of the connecting shaft II is connected with a driving mechanism in the control part, and the driving mechanism is used for driving the connecting shaft I and the connecting shaft II to synchronously rotate relatively so as to drive the movable contact I and the movable contact II to synchronously rotate.

6. The novel forward and reverse rotating motor change-over switch according to claim 5, characterized in that: the end parts of the other ends of the first shifting rod and the second shifting rod are respectively provided with a double-color code, and the shell is provided with a through hole at the corresponding position of the double-color code.

7. The novel forward/reverse rotating motor change-over switch according to any one of claims 2 to 6, characterized in that: the wiring portion further comprises a second wiring lug, the second wiring lug is used for communicating a neutral line of the three-phase power supply with the positive and negative rotating motor, and the second wiring lug are identical in structure.

8. The novel forward and reverse rotating motor change-over switch according to claim 5, characterized in that: the driving mechanism comprises a supporting plate, a triggering assembly, a switching assembly, a first shifting piece and a second shifting piece, the triggering assembly comprises an electromagnet, a push rod, a shifting block, a pin shaft and a connecting rod, and the switching assembly comprises a rotary disc, a blocking piece, a fixed seat, a connecting piece and an elastic piece; the supporting plate is provided with a V-shaped guide groove, the electromagnet is arranged in the guide sleeve, one end of the ejector rod is arranged in the guide sleeve, a pressure spring is arranged between the ejector rod and the electromagnet, the other end of the ejector rod is hinged with one end of the shifting block, the middle part of the shifting block is connected to the supporting plate in a shaft mode, the other end of the shifting block is connected with the pin shaft, one end of the connecting rod is hinged with the pin shaft, the other end of the connecting rod is provided with a guide post, and the guide post is located in the V-shaped guide groove; the rotating disc and the blocking piece are coaxially coupled to the supporting plate, a limiting groove is formed in the upper portion of the rotating disc, a notch is formed in the lower portion of the rotating disc, the guide post is located in the notch, a limiting post is arranged at the upper end of the blocking piece and located in the limiting groove, a forward projection portion of the bottom of the lower end of the blocking piece shields a forward projection of the V-shaped guide groove, a gap exists between the forward projection portion and the inner wall of the V-shaped guide groove, the fixing seat is fixed to the supporting plate, one end of the elastic piece is fixed to the supporting plate, the other end of the elastic piece is connected with the fixing seat through a spring, one end of the connecting piece is hinged to the rotating disc, the other end of the connecting piece is hinged to the elastic piece, one end of the first shifting piece and one end of the second shifting piece are respectively and coaxially provided with shaft holes corresponding to the first connecting shaft and the second connecting shaft, and the other ends of the first shifting piece and the second shifting piece are respectively provided with waist holes, the guide post is simultaneously positioned in the waist holes of the first shifting piece and the second shifting piece.

9. The novel forward and reverse rotating motor change-over switch according to claim 8, characterized in that: the supporting plate is simultaneously provided with a limiting hole, and the limiting column is simultaneously positioned in the limiting hole.