CN202475114U - Motor conjunction box - Google Patents
Motor conjunction box Download PDFInfo
- Publication number
- CN202475114U CN202475114U CN201120574176XU CN201120574176U CN202475114U CN 202475114 U CN202475114 U CN 202475114U CN 201120574176X U CN201120574176X U CN 201120574176XU CN 201120574176 U CN201120574176 U CN 201120574176U CN 202475114 U CN202475114 U CN 202475114U
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- Prior art keywords
- cable
- insulation
- motor
- box
- holder
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Abstract
The utility model discloses a motor conjunction box which includes an installation box and three insulated boxes. The three insulated boxes are arranged in the installation box, and each insulated box is provided with two cable inlets. A main cable of a motor is connected with an outer cable in the motor conjunction box. Three phase lines of the cable are arranged in the three insulated boxes of the motor conjunction box respectively, and one phase among the three phases of the motor cable and one phase among the three phases of the outer cable enter into the insulated box via the two cable inlets, and then are connected in the insulated box. Each phase of the three-phase cable is introduced into one of the three independent insulated boxes, so the electric clearances and the creepage distances among the phases are greatly increased, and the electrical safety of the motor conjunction box is also improved.
Description
Technical field
The utility model relates to technical field of motors, particularly a kind of connection box for motor.
Background technology
Motor is to realize electric energy conversion or a kind of calutron that transmits according to electromagnetic induction.The main effect of said motor is to produce driving torque, as the power source of electrical equipment or various machineries.
According to the difference of machine operation power supply, can be divided into direct current machine and alternating current machine, wherein alternating current machine also is divided into monophase machine and three phase electric machine.The power of three phase alternating current motor is big, is mainly large-size machine, generally is used for having the large industry equipment of three phase mains.
In the application of reality, the leader cable of said three phase alternating current motor links to each other with outside threephase cable through terminal box usually.Inner in said terminal box, the three-phase of the external cable that the three-phase of said three-phase alternating current cables is introduced with said terminal box respectively links to each other.
Three insulators are arranged in the said terminal box, and the triple line of said three-phase alternating current cables is fixedly connected with three said insulators respectively, and the triple line of outside threephase cable links to each other with the triple line of leader cable respectively again.
Be distributed in the said terminal box at a distance of certain distance between three said insulators, above-mentioned distance is necessary for the safe distance that can not be communicated with between the cable triple line, and said safe distance need satisfy electric clearance and creepage distance.Along with the rising of electric pressure, in order to guarantee safety, said safe distance needs to increase, and also need increase the size of said terminal box accordingly.For the different voltages with different grade, then need the terminal box of the different size corresponding of design respectively with it.
Though between three said insulators at a distance of certain safe distance; But still can not guarantee during change in voltage can not puncture connection between the triple line of said cable; Any two puncture mutually between the triple line of said cable; All will be for said motor cause serious accident, there is certain potential safety hazard in said terminal box.
Therefore, how eliminating the potential safety hazard of connection box for motor, is that those skilled in the art are badly in need of the technical problem that solves at present.
The utility model content
The purpose of the utility model provides a kind of connection box for motor, and this connection box for motor has very high electrical security.
In order to solve the problems of the technologies described above, the utility model provides a kind of connection box for motor, comprises mounting box, also comprises three insulation booths, and three said insulation booths are installed in the said mounting box, and each said insulation booth has two cable inlets.
Preferably, said insulation booth has the insulation holder, and said insulation holder has the through hole that cooperates with cable, and said insulation holder passes the through hole of said insulation booth and said mounting box bottom, and two ends are located by locating part respectively.
Preferably, said insulation holder one end has spacing head, and the other end is threaded with said locating part.
Preferably, said locating part has the screwed hole that cooperates with said insulation holder, and said locating part is installed in the bottom of said mounting box by bolt.
Preferably, said insulation holder also comprises sealing ring, and said sealing ring is positioned at the through hole that said insulation holder cooperates with said cable.
Preferably, said insulation holder comprises keeper and fixture, and said keeper all has the through hole that cooperates with said cable with said fixture; The spacing head of said keeper is positioned at said insulation booth, and the through hole of said insulation booth bottom is passed in the bottom, and is connected with the inner hole thread of said mount head; The head of said fixture is positioned at said mounting box and supports said insulation booth, and the through hole that said mounting box is passed in the bottom is threaded with said locating part.
Preferably, said insulation holder also comprises the cable holder, and said cable holder has the through hole that cooperates with said cable, and said cable holder is connected with the inner hole thread of said keeper head.
Preferably, said sealing ring is positioned at the through hole that said keeper cooperates with said cable.
Preferably, said connection box for motor also comprises the prolongation box that is communicated with said mounting box, and another cable inlet of said insulation booth is positioned at the side of said insulation booth towards said prolongation box.
Preferably, the cable inlet of said insulation booth side has the cable positioning seat, and said cable positioning seat has the through hole that cooperates with said cable.
The connection box for motor that the utility model provides comprises mounting box, also comprises three insulation booths, and three said insulation booths are installed in the said mounting box, and each said insulation booth has two cable inlets.
The leader cable of said motor links to each other in said connection box for motor inside with external cable; The triple line of cable lays respectively in three insulation booths of said connection box for motor; In in the motor cable three-phase one and the external cable three-phase one gets into said insulation booth by two said cable inlets respectively mutually, in said insulation booth, connects.In the threephase cable each is all caused respectively in three independently said insulation booths mutually, has increased electric clearance and creepage distance between each phase greatly, makes said connection box for motor have very high electrical security.
In a kind of mode, said insulation booth has the insulation holder, and said insulation holder has the through hole that cooperates with cable, and said insulation holder passes the through hole of said insulation booth and said mounting box bottom, and two ends are located by locating part respectively.
Said insulation booth is fixed in the said mounting box by said insulation holder, and, a through hole that cable inlet is said insulation holder of said insulation booth.
In the another kind of mode, said insulation holder one end has spacing head, and the other end is threaded with said locating part.
Said insulation holder can an end be positioned at said insulation booth and be connected with said locating part, and the other end is connected with said locating part outside said mounting box; Also can have spacing head by an end, said spacing head is said insulation holder one end location, and the other end of said insulation holder is connected with said locating part.
Further in the mode, said locating part has the screwed hole that cooperates with said insulation holder, and said locating part is installed in the bottom of said mounting box by bolt.
The spacing head of said insulation holder is positioned at the said insulation booth of said insulation booth internal fixation, and the bottom is passed said insulation booth and is connected with said locating part with said mounting box, and said locating part is fixedly mounted on the bottom of said mounting box.
In a kind of preferred mode, said insulation holder comprises keeper and fixture, and said keeper all has the through hole that cooperates with said cable with said fixture; The spacing head of said keeper is positioned at said insulation booth, and the through hole of said insulation booth bottom is passed in the bottom, and is connected with the inner hole thread of said mount head; The head of said fixture is positioned at said mounting box and supports said insulation booth, and the through hole that said mounting box is passed in the bottom is threaded with said locating part.
Said insulation holder can be made up of two parts, and two parts cooperate installs said insulation booth, and a part is said insulation booth location, and another one is that said insulation booth is installed.Said keeper is installed with said insulation booth location and with said fixture, and said fixture is installed in said mounting box allocation really.
In the further preferred mode, said insulation holder also comprises the cable holder, and said cable holder has the through hole that cooperates with said cable, and said cable holder is connected with the inner hole thread of said keeper head.
Can also have the cable holder for said cable location in the said insulation holder, said cable holder can increase the stability of said cable.
In the another kind of mode, said connection box for motor also comprises the prolongation box that is communicated with said mounting box, and another cable inlet of said insulation booth is positioned at the side of said insulation booth towards said prolongation box.
Another cable inlet of said connection box for motor is positioned at the side of said insulation booth, and towards the direction that external cable is introduced, said external cable is introduced by said prolongation box.
Description of drawings
The front view of the partial cutaway of a kind of embodiment of connection box for motor that Fig. 1 is provided for the utility model embodiment;
Fig. 2 is the side view cutaway drawing of connection box for motor shown in Figure 1;
Fig. 3 is the enlarged diagram of the insulation booth of connection box for motor shown in Figure 2;
Fig. 4 is the enlarged diagram of the insulation holder of connection box for motor shown in Figure 2.
Embodiment
The core of the utility model provides a kind of connection box for motor, and this connection box for motor has very high electrical security.
In order to make those skilled in the art person understand the utility model scheme better, the utility model is done further to specify below in conjunction with accompanying drawing and embodiment.
Please refer to figure Fig. 1 to Fig. 4; The front view of the partial cutaway of a kind of embodiment of connection box for motor that Fig. 1 is provided for the utility model embodiment; Fig. 2 is the side view cutaway drawing of connection box for motor shown in Figure 1; Fig. 3 is the enlarged diagram of the insulation booth of connection box for motor shown in Figure 2, and Fig. 4 is the enlarged diagram of the insulation holder of connection box for motor shown in Figure 2.
In a kind of concrete execution mode, the utility model provides a kind of connection box for motor, comprises mounting box 1, comprises that also 2, three said insulation booths 2 of three insulation booths are installed in the said mounting box 1, and each said insulation booth 2 has two cable inlets 21.
The leader cable of said motor links to each other in said connection box for motor inside with external cable; The triple line of cable lays respectively in three said insulation booths 2 of said connection box for motor; In in the motor cable three-phase one and the external cable three-phase one gets into said insulation booths 2, connection said insulation booth 2 in by two said cable inlets 21 respectively mutually.In the threephase cable each is all caused respectively in three independently said insulation booths 2 mutually, has increased electric clearance and creepage distance between each phase of threephase cable greatly, makes said connection box for motor have very high electrical security.
Under condition of different, because the insulating material around the conductor is caused insulating material to present electrification phenomenon by electric polarization, the radius of this live zone (when conductor was circular, live zone was an annular) is creepage distance.Between two conductive parts that promptly record along insulating surface or the shortest path between conductive parts and the equipment protection interface.
Can form leakage current path on the insulating material surface.If these leakage current path constitute a conductive path, dielectric surface flashover or punch-through then appear.This variation of insulating material needs the regular hour, and it is caused by the operating voltage that is added in for a long time on the device, and the pollution of device surrounding environment can be quickened this variation.The anti-creepage characteristic of the insulating material that therefore when confirming the terminal creepage distance, will consider size, the class of pollution of operating voltage and used.
Between two conductive parts or the shortest space length that records between conductive parts and the equipment protection interface, promptly guaranteeing to realize that through air the beeline that insulate is an electric clearance under the stable situation with safety of electric property.
Electric clearance can bear very high overvoltage, but after overvoltage value surpassed a certain critical value, this voltage caused electrical breakdown soon, the inside and outside overvoltage of the maximum that therefore when confirming the electric clearance size, must may occur with equipment.
Creepage distance all is parameters relevant with electric insulation with electric clearance, and suitable creepage distance and electric clearance can improve electrical security and stability.
In the another kind of concrete execution mode; Said insulation booth 2 has insulation holder 3; Said insulation holder 3 has the through hole that cooperates with cable, and said insulation holder 3 passes the through hole of said insulation booth 2 and said mounting box 1 bottom, and two ends are respectively by locating part 31 location.
Said insulation booth 2 is fixed in the said mounting box 1 by said insulation holder 3, and, a through hole that cable inlet is said insulation holder 3 of said insulation booth 2.
In the further concrete execution mode, said insulation holder 3 one ends have spacing head, and the other end is threaded with said locating part 31.
Said insulation holder 3 can an end be positioned at said insulation booth 2 and be connected with said locating part 31, and the other end is connected with said locating part 31 outside said mounting box 1; Also can have spacing head by an end, said spacing head is the end location of said insulation holder 3, and the other end of said insulation holder 3 is connected with said locating part 31 again.
In the further concrete execution mode, said locating part 31 has the screwed hole that cooperates with said insulation holder 3, and said locating part 31 is installed in the bottom of said mounting box 1 by bolt.
The spacing head of said insulation holder 3 is positioned at the said insulation booth 2 of said insulation booth 2 internal fixation, and the bottom is passed said insulation booth 2 and is connected with said locating part 31 with said mounting box 1, and said locating part 31 is fixedly mounted on the bottom of said mounting box 1.
Can also said insulation holder 3 be changed a direction; The spacing head of said insulation holder 3 is positioned at the location, bottom of said mounting box 1; The bottom is passed said mounting box 1 and is connected with said locating part 31 with said insulation booth 2, and said locating part 31 is fixedly mounted on said insulation booth 2 inside.
Certainly, the installation form of said locating part 31 not only is confined to the described situation of the foregoing description, and other can realize also can being applied in the utility model the structure or the mounting means of said insulation holder 3 location.
In the another kind of concrete execution mode, said insulation holder 3 also comprises sealing ring 32, and said sealing ring 32 is positioned at the through hole that said insulation holder 3 cooperates with said cable.
Said sealing ring 32 can guarantee that said insulation booth 2 is a sealed space, the insulating space of a sealing, each is insulated isolation between mutually fully can to guarantee said cable, make said cable each have higher electric clearance and creepage distance between mutually.
In a kind of preferred embodiment, said insulation holder 3 comprises keeper 33 and fixture 34, and said keeper 33 all has the through hole that cooperates with said cable with said fixture 34; The spacing head 331 of said keeper 33 is positioned at said insulation booth 2, and the through hole of said insulation booth 2 bottoms is passed in the bottom, and is connected with the inner hole thread of said fixture 34 heads; The head of said fixture 34 is positioned at said mounting box 1 and supports said insulation booth 2, and the through hole that said mounting box 1 is passed in the bottom is threaded with said locating part 31.
Said insulation holder 3 can be made up of two parts, and two parts cooperate installs said insulation booth 2, and a part is said insulation booth 2 location, and another one is that said insulation booth 2 is installed.Said keeper 33 is installed with said insulation booth 2 location and with said fixture 34, and said fixture 34 is installed in said mounting box 1 allocation really.
In the further preferred embodiment, said insulation holder 3 also comprises cable holder 35, and said cable holder 35 has the through hole that cooperates with said cable, and said cable holder 35 is connected with the inner hole thread of said keeper 33 heads.
Can also have the cable holder 35 for said cable location in the said insulation holder 3, said cable holder 35 can increase the stability of said cable.
To sum up; Said insulation holder 3 can be made up of two parts; Also can form by three parts; The composition form of said insulation holder 3 not only is confined to the described situation of the foregoing description, can realize that cable passes through and the parts of the version of other that said insulation booth 2 is fixing also can be used in the utility model.
In the another kind of concrete execution mode, said sealing ring 32 is positioned at the through hole that said keeper 33 cooperates with said cable.
Said sealing ring 32 can guarantee the sealing of said insulation booth 2; In order better to guarantee the sealing of said insulation booth 2; Can between each adjacent parts, sealing ring or sealing gasket be set all, for example, between said keeper 33 and the said insulation booth 2; Between said insulation booth 2 and the said fixture 34, between said locating part 31 and the said mounting box 1 etc.
In a kind of preferred embodiment, said connection box for motor also comprises the prolongation box 4 that is communicated with said mounting box 1, and another cable inlet 21 of said insulation booth 2 is positioned at the side of said insulation booth 2 towards said prolongation box 4.
Another cable inlet of said connection box for motor is positioned at the side of said insulation booth 2, and towards the direction that external cable is introduced, said external cable is introduced by said prolongation box 4.
In the further preferred embodiment, the cable inlet 21 of said insulation booth 2 sides has cable positioning seat 41, and said cable positioning seat 41 has the through hole that cooperates with said cable.
Said cable positioning seat 41 can with said external cable stable be positioned at said cable inlet 21, between said cable positioning seat 41 and said cable, also sealing device can be set, can guarantee the sealing of said insulation booth 2.
Said motor cable can directly be connected also and can be connected by electrical connector in said insulation booth 2 inside with said external cable, and preferred said electrical connector, said electrical connector can guarantee the reliability that cable connects.
In sum; Said insulation booth 2 and said insulation holder 3 are processed by insulating material; Insulating material has many types and grade, and any one insulating material is used for making said insulation booth 2 and said insulation holder 3 can be realized in the utility model the insulation between the cable triple line being isolated.And in the prior art, the insulator of terminal box needs to be processed by special insulating material, and cost is higher, is easier to damage at the use ratio.The insulation booth 2 of the connection box for motor that the utility model provides is lower with the cost of insulation holder 3, and easy accessibility is convenient to installation and maintenance, also is provided with sealing device specially at all faying faces, has guaranteed reliable insulated enclosure effect.
More than the connection box for motor that the utility model provided has been carried out detailed introduction.Used concrete example among this paper the principle and the execution mode of the utility model are set forth, the explanation of above embodiment just is used to help to understand the method and the core concept thereof of the utility model.Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection range of the utility model claim.
Claims (10)
1. a connection box for motor comprises mounting box (1), it is characterized in that, also comprises three insulation booths (2), and three said insulation booths (2) are installed in the said mounting box (1), and each said insulation booth (2) has two cable inlets (21).
2. like claims 1 described connection box for motor; It is characterized in that; Said insulation booth (2) has insulation holder (3); Said insulation holder (3) has the through hole that cooperates with cable, and said insulation holder (3) passes the through hole of said insulation booth (2) and said mounting box (1) bottom, and two ends are located by locating part (31) respectively.
3. connection box for motor as claimed in claim 2 is characterized in that, said insulation holder (3) one ends have spacing head, and the other end is threaded with said locating part (31).
4. connection box for motor as claimed in claim 3 is characterized in that, said locating part (31) has the screwed hole that cooperates with said insulation holder (3), and said locating part (31) is installed in the bottom of said mounting box (1) by bolt.
5. connection box for motor as claimed in claim 4 is characterized in that, said insulation holder (3) also comprises sealing ring (32), and said sealing ring (32) is positioned at the through hole that said insulation holder (3) cooperates with said cable.
6. like each described connection box for motor of claim 2 to 5, it is characterized in that said insulation holder (3) comprises keeper (33) and fixture (34), said keeper (33) all has the through hole that cooperates with said cable with said fixture (34); The spacing head (331) of said keeper (33) is positioned at said insulation booth (2), and the through hole of said insulation booth (2) bottom is passed in the bottom, and is connected with the inner hole thread of said fixture (34) head; The head of said fixture (34) is positioned at said mounting box (1) and supports said insulation booth (2), and the through hole that said mounting box (1) is passed in the bottom is threaded with said locating part (31).
7. connection box for motor as claimed in claim 6; It is characterized in that; Said insulation holder (3) also comprises cable holder (35), and said cable holder (35) has the through hole that cooperates with said cable, and said cable holder (35) is connected with the inner hole thread of said keeper (33) head.
8. connection box for motor as claimed in claim 7 is characterized in that, said sealing ring (32) is positioned at the through hole that said keeper (33) cooperates with said cable.
9. like each described connection box for motor of claim 2 to 5; It is characterized in that; Said connection box for motor also comprises the prolongation box (4) that is communicated with said mounting box (1), and another cable inlet (21) of said insulation booth (2) is positioned at the side of said insulation booth (2) towards said prolongation box (4).
10. connection box for motor as claimed in claim 9 is characterized in that, the cable inlet (21) of said insulation booth (2) side has cable positioning seat (41), and said cable positioning seat (41) has the through hole that cooperates with said cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120574176XU CN202475114U (en) | 2011-12-31 | 2011-12-31 | Motor conjunction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120574176XU CN202475114U (en) | 2011-12-31 | 2011-12-31 | Motor conjunction box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202475114U true CN202475114U (en) | 2012-10-03 |
Family
ID=46923237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120574176XU Expired - Lifetime CN202475114U (en) | 2011-12-31 | 2011-12-31 | Motor conjunction box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202475114U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522846A (en) * | 2011-12-31 | 2012-06-27 | 南车株洲电机有限公司 | Wiring box for motor |
-
2011
- 2011-12-31 CN CN201120574176XU patent/CN202475114U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522846A (en) * | 2011-12-31 | 2012-06-27 | 南车株洲电机有限公司 | Wiring box for motor |
| CN102522846B (en) * | 2011-12-31 | 2014-03-26 | 南车株洲电机有限公司 | Wiring box for motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121003 Effective date of abandoning: 20140326 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20121003 Effective date of abandoning: 20140326 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |