Motor and double-outgoing-line structure thereof

Abstract

The utility model discloses a motor and a double outgoing line structure thereof, the double outgoing line structure comprises a conducting strip and two junction boxes symmetrically installed on two sides of the motor, a group of wiring terminals connected with a stator winding in the motor are arranged in each junction box, the conducting strip is detachably connected with one group of wiring terminals in any junction box, and the conducting strip is detachably connected with the other group of wiring terminals in any junction box. And one group of wiring terminals in the other wiring box is connected with a power supply input end through a cable. According to the double-outgoing-line structure, the motor has a left outgoing line mode and a right outgoing line mode, when any motor in the counter-rotating main ventilator breaks down, the installation positions of the cable and the conducting strip in the two junction boxes can be changed according to the outgoing line direction of the faulted motor, and the installation is convenient. Therefore, the motor serves as a standby motor of any motor in the counter-rotating main ventilator, normal operation of the counter-rotating main ventilator is met, the number of the standby motors of the counter-rotating main ventilator is reduced, and cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field, more specifically, relate to a motor and its double outgoing line structure. BACKGROUND

[0002] High-voltage explosion-proof motor is used as the prime mover of counter-rotating main fan, usually used in pairs, respectively, as a first motor and a second motor, and the shaft body of the two motors is opposite and drives two impellers to rotate.

[0003] In the prior art, the motor is usually a single outgoing line structure, that is, the motor is provided with a terminal box on one side, which is used to connect the three-phase winding of the motor with the external power supply, and in order to facilitate the wiring of the external cable, the terminal boxes of the two motors are arranged on the same side, so that the outgoing line directions of the terminal boxes of the two motors are left and right (obtained by standing on the shaft body end of the motor and observing from the front). Therefore, when a certain motor fails, the same complete machine spare parts need to be selected according to the outgoing line direction of the terminal box of the damaged motor, otherwise the counter-rotating main fan cannot operate, which requires the user to have two standby motors to meet the safe operation of the equipment after damage.

[0004] In summary, how to reduce the number of standby motors of the existing counter-rotating main fan is a problem that needs to be solved by the technical personnel in the field at present. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims at providing a motor and its double outgoing line structure, which can reduce the number of standby motors of the counter-rotating main fan and reduce the cost.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A double outgoing line structure, comprising a conductive sheet and two terminal boxes symmetrically installed on both sides of a motor, a group of terminal pins connected with stator windings in the motor are arranged in each of the two terminal boxes, the conductive sheet is detachably connected with a group of terminal pins in any of the two terminal boxes, and a group of terminal pins in the remaining terminal box is connected with a power input end through a cable.

[0008] Preferably, the terminal box comprises a terminal box body and a box cover, the top end of the terminal box body is an open end and the box cover is detachably arranged on the open end, a side of the terminal box body is provided with a socket for the cable to pass through, and a group of terminal pins are arranged at the bottom end of the terminal box body.

[0009] Preferably, the terminal pin comprises an insulating sleeve and a terminal bolt, the insulating sleeve is arranged at the bottom end of the terminal box body, the terminal bolt is arranged in the insulating sleeve, the bottom end of the insulating sleeve is provided with an opening, and the lead wire of the stator winding is connected with the bottom of the terminal bolt through the opening.

[0010] The top of the terminal bolt protrudes from the insulating sleeve, and the top of the terminal bolt is detachably inserted into the conductive sheet, or the top of the terminal bolt is connected to the cable.

[0011] Preferably, the bottom of the terminal bolt is provided with a slot, and the outgoing line of the stator winding is embedded in the slot.

[0012] Preferably, the top of the terminal bolt passes through the insertion hole of the conductive sheet, and a nut is screwed on the terminal bolt and presses the conductive sheet;

[0013] Alternatively, the top of the terminal bolt is wound with the cable, and a nut is screwed on the terminal bolt and presses the cable.

[0014] Preferably, two washers are sleeved on the terminal bolt, and the conductive sheet is located between the two washers, or the cable is located between the two washers.

[0015] Preferably, the stator winding includes a three-phase winding, a group of the terminal includes three terminals, and the outgoing lines of the three-phase winding are all inserted into the terminal box and correspondingly connected to the three terminals.

[0016] Preferably, the conductive sheet is an annular structure with a notch, and the three terminals are arranged around the center of the annular structure.

[0017] Preferably, the conductive sheet is a silver-plated copper sheet.

[0018] A motor comprising the double-outline structure of any one of the above.

[0019] The double-outline structure provided by the utility model has a conductive sheet and two junction boxes, the two junction boxes are symmetrically installed on the two sides of the motor, and the two junction boxes are respectively a left junction box and a right junction box, and a group of junction terminals connected with the stator winding in the motor are arranged in the two junction boxes, so that the motor has two kinds of outline modes.

[0020] Therefore, the double-outline structure provided by the utility model makes the motor have two kinds of outline modes, when any motor in the counter-rotating main ventilator fails, according to the outline direction of the failed motor, the installation positions of the cable and the conductive sheet in the two junction boxes are exchanged, so that the motor can be used as a standby motor of any motor in the counter-rotating main ventilator, the counter-rotating main ventilator can normally operate, the number of standby motors of the counter-rotating main ventilator is reduced, and the cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description, and obviously, the drawings in the following description are only the embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative labor.

[0022] Figure 1 The structural diagram of the motor with the double-outline structure provided by the utility model is shown in the figure.

[0023] Figure 2 The sectional view of the main junction box provided by the utility model is shown in the figure.

[0024] Figure 3 The half-sectional view of the main junction box provided by the utility model is shown in the figure.

[0025] Figure 4 The sectional view of the auxiliary junction box provided by the utility model is shown in the figure.

[0026] Figure 5 is a half sectional view of the auxiliary junction box provided by the utility model;

[0027] Figure 6 is a structural schematic view of the conductive sheet provided by the utility model.

[0028] Reference signs:

[0029] 1 - junction box; 11 - junction box body; 12 - cover; 13 - socket; a - main junction box; b - auxiliary junction box;

[0030] 2 - junction terminal; 21 - insulating sleeve; 22 - junction bolt; 23 - nut; 24 - gasket; 25 - slot;

[0031] 3 - conductive sheet; 31 - insertion hole;

[0032] 4 - motor. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0034] The core of the utility model is to provide a motor and a double outlet structure thereof, which can reduce the number of standby motors of the rotary main ventilator and reduce the cost.

[0035] It should be noted that in the present embodiment, the directions or position relationships indicated by "up", "down", "left", "right" and the like are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0036] Please refer to Figures 1 to 6 The present application provides a double outlet structure, which comprises a conductive sheet 3 and two junction boxes 1 symmetrically installed on both sides of a motor 4, a set of junction terminals 2 connected with stator windings in the motor 4 are arranged in each of the two junction boxes 1, the conductive sheet 3 is detachably connected with a set of junction terminals 2 in any one of the junction boxes 1, and a set of junction terminals 2 in the remaining one of the junction boxes 1 is connected with a power input end through a cable.

[0037] It should be noted that the rotary main ventilator has a first motor 4 and a second motor 4, and the first motor 4 is left outlet and the second motor 4 is right outlet when the motor 4 is observed from the front side of the shaft body end.

[0038] Specifically, two terminal boxes 1 are arranged on both sides of the motor housing 4, and, taking the shaft end of the motor 4 as the reference, the two terminal boxes 1 are respectively a left terminal box 1 and a right terminal box 1. Each of the two terminal boxes 1 is provided with a set of terminal posts 2, and the number of terminal posts 2 is consistent with the number of stator windings. The outgoing wires of the windings pass through the motor housing 4 and extend into the terminal box 1 to connect the terminal posts 2, so that the motor 4 has two kinds of outgoing wire modes. In addition, since the primary motor 4 and the secondary motor 4 are arranged oppositely, and the terminal boxes 1 of the two motors 4 are located on the same side, the two terminal boxes 1 of the present application are arranged symmetrically. For example, after the motor 4 replaces the primary motor 4, the left terminal box 1 of the motor 4 replaces the terminal box 1 of the primary motor 4, and the motor 4 is flipped by 180 degrees to replace the secondary motor 4. At this time, the right terminal box 1 of the motor 4 replaces the terminal box 1 of the secondary motor 4.

[0039] The conductive sheet 3 is made of metal material, so that the conductive sheet 3 has the function of conducting electricity. The conductive sheet 3 can be installed in any terminal box 1, and the terminal box 1 with the conductive sheet 3 is also called a secondary terminal box b. The conductive sheet 3 is connected with a set of terminal posts 2 in the secondary terminal box b to realize electrical connection of the set of terminal posts 2 through the conductive sheet 3. At the same time, the remaining one terminal box 1 is called a primary terminal box a, and a set of terminal posts 2 in the primary terminal box a is connected with the power input end through a cable. It should be noted that the connection mode of the conductive sheet 3 and the set of terminal posts 2 is detachable, such as clamping and screwing, so as to facilitate the removal of the conductive sheet 3 from the original secondary terminal box b and the installation of the conductive sheet 3 in the original primary terminal box a. After installation is completed, the original primary terminal box a becomes the present secondary terminal box b, and at the same time, the cable also needs to be removed from the original primary terminal box a and installed in the original secondary terminal box b. After installation is completed, the original secondary terminal box b becomes the present primary terminal box a, so as to realize the position exchange of the primary terminal box a and the secondary terminal box b.

[0040] In the use process of the contra-rotating main fan, when the primary motor 4 fails, the motor 4 can be temporarily replaced by the primary motor 4. At this time, a set of terminal posts 2 in the left terminal box 1 is connected with the power input end through a cable, and the left terminal box 1 is the primary terminal box a. A set of terminal posts 2 in the right terminal box 1 is connected through the conductive sheet 3, and the right terminal box 1 is the secondary terminal box b. Thus, the stator windings of the motor 4 are connected with the power input end to form a circuit, so as to realize the operation of the motor 4 and ensure the normal operation of the contra-rotating main fan. Similarly, when the secondary motor 4 fails, the motor 4 can be temporarily replaced by the secondary motor 4. At this time, a set of terminal posts 2 in the right terminal box 1 is connected with the power input end through a cable, and the right terminal box 1 is the primary terminal box a. A set of terminal posts 2 in the left terminal box 1 is connected through the conductive sheet 3, and the left terminal box 1 is the secondary terminal box b, which can also ensure the normal operation of the contra-rotating main fan.

[0041] Therefore, the double-outline structure provided by the application enables the motor 4 to have two kinds of outline modes, when any one of the motors 4 in the counter-rotating main ventilator fails, the installation positions of the cable and the conductive sheet 3 in the two terminal boxes 1 are exchanged according to the outline direction of the failed motor 4, so that the motor 4 can serve as a standby motor of any one of the motors 4 in the counter-rotating main ventilator, and the normal operation of the counter-rotating main ventilator is ensured, thereby reducing the number of standby motors of the counter-rotating main ventilator and lowering the cost.

[0042] For the convenience of wiring of the terminal box 1 and dismounting of the conductive sheet 3, on the basis of the above embodiment, please refer to Figures 2-6 The terminal box 1 comprises a terminal box body 11 and a box cover 12, the top end of the terminal box body 11 is an open end and is detachably covered by the box cover 12, one side of the terminal box body 11 is provided with a socket 13 for the cable to pass through, and the bottom end of the terminal box body 11 is provided with a group of terminal posts 2.

[0043] Specifically, the bottom end of the terminal box body 11 is provided with perforations, the number of the perforations is consistent with the number of the terminal posts 2, the terminal posts 2 are installed in the corresponding perforations through fixing members, and the bottom of the terminal posts 2 extends out of the terminal box body 11 through the perforations, so that the outgoing wires of the stator winding can be connected to the bottom of the terminal posts 2, thereby facilitating the wiring of the outgoing wires of the stator winding. In addition, the top of the terminal posts 2 is located in the interior of the terminal box body 11 and opposite to the top end of the terminal box body 11, the top end of the terminal box body 11 is provided with an opening, and the opening is covered by the detachable box cover 12, so that when the conductive sheet 3 needs to be installed, the box cover 12 is removed, and the conductive sheet 3 can be installed on the top of the group of terminal posts 2 through the open end of the terminal box 1 by manual operation, and after the installation is completed, the box cover 12 is installed again; when the conductive sheet 3 needs to be removed, the box cover 12 is removed, and the conductive sheet 3 can be removed from the top of the group of terminal posts 2 through the open end of the terminal box 1 by manual operation, thereby facilitating the dismounting of the conductive sheet 3. On the other hand, one side of the terminal box body 11 is provided with the socket 13 for the cable to pass through, so that when the cable needs to be connected, the box cover 12 is removed, the cable is inserted into the terminal box body 11 through the socket 13, and the cable is wound on the top of the terminal posts 2 from the open end of the terminal box 1 by manual operation after the group of terminal posts 2 are all connected to the cable, and the box cover 12 is installed again; when the cable needs to be connected, the box cover 12 is removed, and the cable can be removed from the top of the terminal posts 2 through the open end of the terminal box 1 by manual operation, and then the cable is extracted from the socket 13, thereby facilitating the wiring of the cable.

[0044] It should be noted that when the terminal box 1 is installed, the bottom end of the terminal box body 11 faces the motor 4 and is connected together with the motor 4, the top end of the terminal box body 11 is arranged outward away from the motor 4, and the side of the terminal box body 11 provided with the socket 13 is arranged downward.

[0045] In view of the specific arrangement of the terminal 2, on the basis of the above-described embodiment, please refer to Figures 2-6 , the terminal 2 comprises an insulating sleeve 21 and a terminal bolt 22, the insulating sleeve 21 is arranged in the bottom end of the terminal box body 11, the terminal bolt 22 is arranged in the insulating sleeve 21, the bottom end of the insulating sleeve 21 is provided with an opening, the outgoing line of the stator winding passes through the opening to connect the bottom of the terminal bolt 22; the top of the terminal bolt 22 extends out of the insulating sleeve 21, the top of the terminal bolt 22 is detachably inserted into the conductive sheet 3, or the top of the terminal bolt 22 is connected to the cable.

[0046] Specifically, the terminal bolt 22 is made of a metal material with good electrical conductivity, such as copper or aluminum, and mainly serves to connect the cable and the outgoing line of the stator winding to achieve current transmission. The insulating sleeve 21 is a kind of accessory for electrical insulation protection, the insulating sleeve 21 is installed in the through hole at the bottom end of the terminal box body 11 by a fixing member, the terminal bolt 22 is inserted into the insulating sleeve 21, and the bottom of the insulating sleeve 21 extends out of the terminal box body 11, which can better protect the cable, the conductive sheet 3 or the outgoing line of the stator winding connected by the terminal bolt 22, and prevent damage caused by external factors. Among them, the bottom end of the insulating sleeve 21 is provided with an opening, and the outgoing line of the stator winding can pass through the opening to connect the bottom of the terminal bolt 22, so as to realize the connection of the outgoing line of the stator winding to the terminal box 1, and it should be noted that the outgoing line of the stator winding is connected to both terminal boxes 1. In addition, the top of the terminal bolt 22 extends out of the insulating sleeve 21, so that the top of a group of terminal bolts 22 in one terminal box 1 can be inserted into the conductive sheet 3, and the top of a group of terminal bolts 22 in the other terminal box 1 is wound with a cable, so as to realize the transmission of current between the power supply and the stator winding, that is, to realize the power supply of the motor 4.

[0047] In view of the fixing mode of the outgoing line of the stator winding, on the basis of the above-described embodiment, please refer to Figures 2-6 , the bottom of the terminal bolt 22 is provided with a slot 25, and the outgoing line of the stator winding is embedded in the slot 25, so that the installation of the outgoing line of the stator winding is more simple and convenient, and the outgoing line of the stator winding can be effectively protected from physical damage from the outside.

[0048] In view of the fixing mode of the conductive sheet 3 or the cable, on the basis of the above-described embodiment, please refer to Figures 2-6 , the top of the terminal bolt 22 passes through the jack 31 of the conductive sheet 3, and the nut 23 is screwed on the terminal bolt 22 and presses the conductive sheet 3; or the top of the terminal bolt 22 is wound with a cable, and the nut 23 is screwed on the terminal bolt 22 and presses the cable.

[0049] Specifically, the conductive sheet 3 is provided with a plurality of insertion holes 31 corresponding to the plurality of connection bolts 22, the top of the plurality of connection bolts 22 penetrates through the insertion hole 31 on the conductive sheet 3 corresponding to the connection bolt 22, and the top of the plurality of connection bolts 22 is provided with an external thread matched with the thread of the nut 23, so that the plurality of nuts 23 are screwed on the top of the plurality of connection bolts 22, and the nuts 23 are screwed until the conductive sheet 3 is pressed on the top end surface of the insulating sleeve 21, so as to fix the conductive sheet 3. In addition, when the cable needs to be connected, the cable can be wound on the top of the connection bolt 22, and the nuts 23 can be screwed to press the cable between the bolt and the top end surface of the insulating sleeve 21, so as to fix the cable. The nuts 23 are used to fasten the conductive sheet 3 or the cable, which can ensure the stability of the installation on the basis of the removable conductive sheet 3 or the cable.

[0050] It can be understood that when the nuts 23 fasten the conductive sheet 3 or the cable, the tightening force may be concentrated in an area and damage the conductive sheet 3 or the cable. In order to avoid this phenomenon, on the basis of the above embodiment, two gaskets 24 are sleeved on the connection bolt 22, and the conductive sheet 3 is located between the two gaskets 24, or the cable is located between the two gaskets 24.

[0051] Therefore, when the conductive sheet 3 is installed, the top of the plurality of connection bolts 22 is first sleeved into the first gasket 24, the gasket 24 is placed on the top end surface of the insulating sleeve 21, then the conductive sheet 3 is inserted on the plurality of connection bolts 22, the top of the plurality of connection bolts 22 is sleeved into the second gasket 24, finally, the plurality of nuts 23 are screwed on the top of the plurality of connection bolts 22, and the nuts 23 are screwed until the two gaskets 24 and the conductive sheet 3 located therebetween are pressed on the top end surface of the insulating sleeve 21, so that the gasket 24 can disperse the pressure of the nut 23 and reduce the contact pressure during the fastening process of the nut 23, thereby effectively avoiding damage to the conductive sheet 3. When installing the cable, the first gasket 24 is sleeved first, then the top of the plurality of connection bolts 22 is wound around the cable, and then the installation of the second gasket 24 and the nut 23 is performed, so as to complete the installation of the cable. Similarly, damage to the cable can also be effectively avoided.

[0052] Considering the specific structure and connection mode of the stator winding, on the basis of any one of the above embodiments, the stator winding includes a three-phase winding, the plurality of connection terminals 2 includes three connection terminals 2, and the outgoing lines of the three-phase winding extend into the connection box 1 and are connected to the three connection terminals 2 correspondingly.

[0053] It can be understood that the stator winding includes a three-phase winding, and each phase is 120 degrees apart, which can make the current distribution in the winding more uniform and reduce the concentration and loss of current, thereby improving the efficiency of the motor 4 under the same input power.

[0054] Specifically, the three-phase winding is composed of a U-phase winding, a W-phase winding and a V-phase winding, the ends of the three-phase winding are connected together to form a common end, that is, star connection Y connection, the first ends of the three-phase winding are each led out two outgoing lines to form two groups of outgoing lines. Of course, another wiring mode can also be used, the first and last ends of the three-phase winding are sequentially connected, that is, delta connection (△ connection), the three connection points are each led out two outgoing lines to form two groups of outgoing lines. The two groups of outgoing lines are connected to a group of terminal blocks 2 in the two terminal boxes 1 in correspondence, specifically, three outgoing lines in one group of outgoing lines are connected to three terminal blocks 2 in one terminal box 1 in correspondence, and three outgoing lines in the other group of outgoing lines are connected to three terminal blocks 2 in the other terminal box 1 in correspondence, so as to realize the electrical connection between the motor 4 and the two terminal boxes 1 on the left and right sides of the motor 4, that is, the two outgoing line modes of the motor 4.

[0055] Further, please refer to Figure 4 and Figure 5 , the conductive sheet 3 is a ring structure with a notch, and the three terminal blocks 2 are arranged around the center of the ring structure.

[0056] Specifically, the conductive sheet 3 adopts a ring structure with a notch, which is convenient to process and manufacture and has a relatively light weight, so that the conductive sheet 3 can be conveniently exchanged between the two terminal boxes 1, and the support weight of the three terminal blocks 2 can be reduced, which is beneficial to improving the structural stability of the conductive sheet 3. Further, the three terminal blocks 2 are arranged around the center of the ring structure, so that the three terminal blocks 2 are arranged in a triangular shape, which has high stability and can further improve the structural stability of the conductive sheet 3.

[0057] Preferably, the conductive sheet 3 is a silver-plated copper sheet, and the conductive performance of the silver-plated copper sheet is significantly better than that of other metals, so as to improve the transmission efficiency of the current.

[0058] The utility model also provides a motor 4 comprising the double outgoing line structure disclosed in the above embodiment, and the structures of other parts of the motor 4 please refer to the prior art, and the text will not be repeated here.

[0059] It should be noted that in the present specification, relational terms such as first and second are used only to distinguish one entity from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities.

[0060] The embodiments in the present specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0061] The above has carried out the detailed introduction to the motor and the double outgoing line structure thereof provided by the utility model. The principle and implementation mode of the utility model are described by applying specific examples in this paper, and the above embodiment description is only used for helping to understand the method and core idea of the utility model. It should be pointed out that, for ordinary skilled person in the art, without departing from the principle of the utility model, the utility model can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the utility model claims.

Claims

1. A dual wire structure, characterized by, The application relates to a double-outlet structure of a motor, which comprises a conductive sheet (3) and two terminal boxes (1) symmetrically arranged on the two sides of a motor (4), a group of terminal pins (2) connected with stator windings in the motor (4) are arranged in each of the two terminal boxes (1), the conductive sheet (3) is detachably connected with a group of terminal pins (2) in any one of the terminal boxes (1), and a group of terminal pins (2) in the remaining terminal box (1) is connected with a power input end through a cable.

2. The dual wire structure of claim 1, wherein, The terminal box (1) comprises a terminal box body (11) and a box cover (12), the top end of the terminal box body (11) is an open end, the box cover (12) is detachably arranged on the top end of the terminal box body (11), a socket (13) for the cable to pass through is arranged on one side of the terminal box body (11), and a group of terminal pins (2) are arranged at the bottom end of the terminal box body (11).

3. The dual wire structure of claim 2, wherein, The terminal pin (2) comprises an insulating sleeve (21) and a terminal bolt (22), the insulating sleeve (21) is arranged at the bottom end of the terminal box body (11), the terminal bolt (22) is arranged in the insulating sleeve (21), the bottom end of the insulating sleeve (21) is provided with an opening, and the outgoing line of the stator winding is connected with the bottom of the terminal bolt (22) through the opening. The top of the terminal bolt (22) extends out of the insulating sleeve (21), the top of the terminal bolt (22) is detachably inserted into the conductive sheet (3), or the top of the terminal bolt (22) is connected with the cable.

4. The dual wire structure of claim 3, wherein, The bottom of the terminal bolt (22) is provided with a slot (25), and the outgoing line of the stator winding is embedded in the slot (25).

5. The dual wire structure of claim 3, wherein, The top of the terminal bolt (22) passes through the insertion hole (31) of the conductive sheet (3), and a nut (23) is screwed on the terminal bolt (22) and presses the conductive sheet (3); Or, the top of the terminal bolt (22) is wound with the cable, and a nut (23) is screwed on the terminal bolt (22) and presses the cable.

6. The dual wire structure of claim 5, wherein, Two gaskets (24) are arranged on the terminal bolt (22), the conductive sheet (3) is located between the two gaskets (24), or the cable is located between the two gaskets (24).

7. The dual wire structure according to any one of claims 1 to 6, wherein, The stator winding comprises three-phase windings, and a group of terminal pins (2) comprises three terminal pins (2), and the outgoing lines of the three-phase windings all extend into the terminal box (1) and are correspondingly connected with the three terminal pins (2).

8. The dual wire configuration of claim 2, wherein, The conductive sheet (3) is a ring structure with a notch, and the three terminal pins (2) are arranged around the center of the ring structure.

9. The dual wire structure according to any one of claims 1 to 6, wherein, The conductive sheet (3) is a silver-plated copper sheet.

10. An electric machine (4) characterized by The application further discloses a double-outlet motor comprising the double-outlet structure.

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