CN102522846B - Wiring box for motor - Google Patents
Wiring box for motor Download PDFInfo
- Publication number
- CN102522846B CN102522846B CN201110459010.8A CN201110459010A CN102522846B CN 102522846 B CN102522846 B CN 102522846B CN 201110459010 A CN201110459010 A CN 201110459010A CN 102522846 B CN102522846 B CN 102522846B
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- cable
- motor
- holder
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- box
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- 238000009413 insulation Methods 0.000 claims description 150
- 238000007789 sealing Methods 0.000 claims description 20
- 239000011810 insulating material Substances 0.000 description 9
- 239000012212 insulator Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Abstract
The invention discloses a wiring box for a motor, which comprises an installing box and three insulating boxes, wherein the three insulating boxes are all installed in the installing box, and each insulating box is provided with two cable inlets. A main cable of the motor is connected with an external cable at the inner part of the wiring box for the motor, the three-phase wires of the cable are respectively positioned in the three insulating boxes of the wiring box for the motor, and one phase in the three phases of the motor cable and one phase in the three phases of the external cable respectively enter the insulating boxes from the two cable inlets and are connected in the insulating boxes. Since each phase in the three-phase cable is respectively led into the three independent insulating boxes, electric clearances and creepage distances among the phases are greatly increased, so that the wiring box for the motor has high electric safety.
Description
Technical field
The present invention relates to technical field of motors, particularly a kind of connection box for motor.
Background technology
Motor is a kind of calutron of realizing electric energy conversion or transmit according to electromagnetic induction.The Main Function of described 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 is also divided into monophase machine and three phase electric machine.The power of three phase alternating current motor is large, is mainly large-size machine, is generally used in the large industry equipment with three phase mains.
In actual application, the leader cable of described three phase alternating current motor is connected with outside threephase cable by terminal box conventionally.Inner in described terminal box, the three-phase of the external cable that the three-phase of described three-phase alternating current electric cable is introduced with described terminal box is respectively connected.
In described terminal box, have three insulators, the triple line of described three-phase alternating current electric cable is fixedly connected with three described insulators respectively, and the triple line of outside threephase cable is connected with the triple line of leader cable respectively again.
Between three described insulators, be distributed in a distance in described terminal box, above-mentioned distance is necessary for the safe distance that can not be communicated with between cable triple line, and described safe distance need to meet electric clearance and creepage distance.Along with the rising of electric pressure, in order to guarantee safety, described safe distance needs to increase, and also needs to increase accordingly the size of described terminal box.For different electric pressures, need to design respectively the terminal box of the different size corresponding with it.
Although between three described insulators at a distance of certain safe distance, but during change in voltage, still can not guarantee can not puncture connection between the triple line of described cable, between the triple line of described cable, two-phase punctures arbitrarily, all will causing serious accident for described motor, there is certain potential safety hazard in described 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 solving at present.
Summary of the invention
The object of this invention is to provide a kind of connection box for motor, this connection box for motor has very high electrical security.
In order to solve the problems of the technologies described above, the invention provides a kind of connection box for motor, comprise mounting box, also comprise three insulation booths, three described insulation booths are installed in described mounting box, and described in each, insulation booth has two cable inlets.
Preferably, described insulation booth has insulation holder, and described insulation holder has the through hole coordinating with cable, and described insulation holder is through the through hole of described insulation booth and described mounting box bottom, and two ends are located by locating part respectively.
Preferably, described insulation holder one end has spacing head, and the other end is threaded with described locating part.
Preferably, described locating part has the screwed hole coordinating with described insulation holder, and described locating part is arranged on the bottom of described mounting box by bolt.
Preferably, described insulation holder also comprises sealing ring, and described sealing ring is positioned at the through hole that described insulation holder coordinates with described cable.
Preferably, described insulation holder comprises keeper and fixture, and described keeper all has with described fixture the through hole coordinating with described cable; The spacing head of described keeper is positioned at described insulation booth, and the through hole of described insulation booth bottom is passed in bottom, and is connected with the inner hole thread of described mount head; The head of described fixture is positioned at insulation booth described in described mounting box inner support, and bottom is threaded with described locating part through the through hole of described mounting box.
Preferably, described insulation holder also comprises cable holder, and described cable holder has the through hole coordinating with described cable, and described cable holder is connected with the inner hole thread of described keeper head.
Preferably, described sealing ring is positioned at the through hole that described keeper coordinates with described cable.
Preferably, described connection box for motor also comprises the prolongation box being communicated with described mounting box, and another cable inlet of described insulation booth is positioned at described insulation booth towards a side of described prolongation box.
Preferably, the cable inlet of described insulation booth side has cable positioning seat, and described cable positioning seat has the through hole coordinating with described cable.
Connection box for motor provided by the invention, comprises mounting box, also comprises three insulation booths, and three described insulation booths are installed in described mounting box, and described in each, insulation booth has two cable inlets.
The leader cable of described motor is connected in described connection box for motor inside with external cable, the triple line of cable lays respectively in three insulation booths of described connection box for motor, in in motor cable three-phase one and external cable three-phase one enters described insulation booth by two described cable inlets respectively mutually, in described insulation booth, connects.Each in threephase cable all caused respectively mutually three independently in described insulation booth, increased greatly each electric clearance and creepage distance between mutually, makes described connection box for motor have very high electrical security.
In a kind of mode, described insulation booth has insulation holder, and described insulation holder has the through hole coordinating with cable, and described insulation holder is through the through hole of described insulation booth and described mounting box bottom, and two ends are located by locating part respectively.
Described insulation booth is fixed in described mounting box by described insulation holder, and, a through hole that cable inlet is described insulation holder of described insulation booth.
In another kind of mode, described insulation holder one end has spacing head, and the other end is threaded with described locating part.
Described insulation holder can one end be positioned at described insulation booth and be connected with described locating part, and the other end is connected with described locating part outside described mounting box; Also can have spacing head in one end, described spacing head is location, described insulation holder one end, and the other end of described insulation holder is connected with described locating part.
Further, in mode, described locating part has the screwed hole coordinating with described insulation holder, and described locating part is arranged on the bottom of described mounting box by bolt.
The spacing head of described insulation holder is positioned at the fixing described insulation booth of described insulation booth, and bottom is connected with described locating part with described mounting box through described insulation booth, and described locating part is fixedly mounted on the bottom of described mounting box.
In a kind of preferred mode, described insulation holder comprises keeper and fixture, and described keeper all has with described fixture the through hole coordinating with described cable; The spacing head of described keeper is positioned at described insulation booth, and the through hole of described insulation booth bottom is passed in bottom, and is connected with the inner hole thread of described mount head; The head of described fixture is positioned at insulation booth described in described mounting box inner support, and bottom is threaded with described locating part through the through hole of described mounting box.
Described insulation holder can be comprised of two parts, and two parts coordinate installs described insulation booth, and a part is described insulation booth location, and another portion is that described insulation booth is installed.Described keeper is installed by described insulation booth location and with described fixture, and described fixture is arranged on described mounting box allocation really.
In further preferred mode, described insulation holder also comprises cable holder, and described cable holder has the through hole coordinating with described cable, and described cable holder is connected with the inner hole thread of described keeper head.
In described insulation holder, can also have the cable holder for described cable location, described cable holder can increase the stability of described cable.
In another kind of mode, described connection box for motor also comprises the prolongation box being communicated with described mounting box, and another cable inlet of described insulation booth is positioned at described insulation booth towards a side of described prolongation box.
Another cable inlet of described connection box for motor is positioned at the side of described insulation booth, the direction that cable is introduced towards the outside, and described external cable is introduced by described prolongation box.
Accompanying drawing explanation
The front view of the partial cutaway of a kind of embodiment of connection box for motor that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the side view cutaway drawing of the connection box for motor shown in Fig. 1;
Fig. 3 is the enlarged diagram of the insulation booth of the connection box for motor shown in Fig. 2;
Fig. 4 is the enlarged diagram of the insulation holder of the connection box for motor shown in Fig. 2.
Embodiment
Core of the present invention is to provide 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 better the present invention program, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
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 provides for the embodiment of the present invention, Fig. 2 is the side view cutaway drawing of the connection box for motor shown in Fig. 1, Fig. 3 is the enlarged diagram of the insulation booth of the connection box for motor shown in Fig. 2, and Fig. 4 is the enlarged diagram of the insulation holder of the connection box for motor shown in Fig. 2.
In a kind of concrete execution mode, the invention provides a kind of connection box for motor, comprise mounting box 1, also comprise that 2, three described insulation booths 2 of three insulation booths are installed in described mounting box 1, described in each, insulation booth 2 has two cable inlets 21.
The leader cable of described motor is connected in described connection box for motor inside with external cable, the triple line of cable lays respectively in three described insulation booths 2 of described connection box for motor, in in motor cable three-phase one and external cable three-phase one enters described insulation booth 2 by two described cable inlets 21 respectively mutually, in the interior connection of described insulation booth 2.Each in threephase cable all caused respectively mutually three independently in described insulation booth 2, increased greatly each electric clearance and creepage distance between mutually of threephase cable, makes described connection box for motor have very high electrical security.
Different in the situation that, because conductor insulating material is around by electric polarization, cause insulating material to present electrification phenomenon, the radius of this live zone (when conductor is circular, live zone is annular), is creepage distance.The shortest path between two conductive parts that record along insulating surface or between conductive parts and equipment protection interface.
On insulating material surface, can form leakage current path.If these leakage current path form a conductive path, there is dielectric surface flashover or punch-through.This variation of insulating material needs the regular hour, and it is caused by the operating voltage being added in for a long time on device, and the pollution of device surrounding environment can be accelerated this variation.The anti-creepage characteristic of the insulating material that therefore will consider size, the class of pollution of operating voltage when determining terminal creepage distance and use.
Between two conductive parts or the shortest space length recording between conductive parts and equipment protection interface,, in the situation that guaranteeing that electric property is stable and safe, by air, can realize the beeline insulating is electric clearance.
Electric clearance can bear very high overvoltage, but when overvoltage value is over after a certain critical value, this voltage causes electrical breakdown soon, the maximum inside and outside overvoltage that therefore must may occur with equipment when confirming electric clearance size.
Creepage distance is all parameters relevant to electric insulation with electric clearance, and suitable creepage distance and electric clearance, can improve electrical security and stability.
In another kind of concrete execution mode, described insulation booth 2 has insulation holder 3, described insulation holder 3 has the through hole coordinating with cable, and described insulation holder 3 is through the through hole of described insulation booth 2 and described mounting box 1 bottom, and two ends are located by locating part 31 respectively.
Described insulation booth 2 is fixed in described mounting box 1 by described insulation holder 3, and, a through hole that cable inlet is described insulation holder 3 of described insulation booth 2.
Further, in concrete execution mode, described insulation holder 3 one end have spacing head, and the other end is threaded with described locating part 31.
Described insulation holder 3 can one end be positioned at described insulation booth 2 and be connected with described locating part 31, and the other end is connected with described locating part 31 outside described mounting box 1; Also can there is spacing head in one end, the location, one end that described spacing head is described insulation holder 3, the other end of described insulation holder 3 is connected with described locating part 31 again.
Further, in concrete execution mode, described locating part 31 has the screwed hole coordinating with described insulation holder 3, and described locating part 31 is arranged on the bottom of described mounting box 1 by bolt.
The spacing head of described insulation holder 3 is positioned at the fixing described insulation booth 2 of described insulation booth 2, and bottom is connected with described locating part 31 with described mounting box 1 through described insulation booth 2, and described locating part 31 is fixedly mounted on the bottom of described mounting box 1.
Described insulation holder 3 can also be changed to a direction, the spacing head of described insulation holder 3 is positioned to the location, bottom of described mounting box 1, bottom is connected with described locating part 31 with described insulation booth 2 through described mounting box 1, and described locating part 31 is fixedly mounted on described insulation booth 2 inside.
Certainly, the installation form of described locating part 31 is not only confined to the situation described in above-described embodiment, and other can be realized and also can apply in the present invention structure or the mounting means of described insulation holder 3 location.
In another kind of concrete execution mode, described insulation holder 3 also comprises sealing ring 32, and described sealing ring 32 is positioned at the through hole that described insulation holder 3 coordinates with described cable.
Described sealing ring 32 can guarantee that described insulation booth 2 is the space of a sealing, the insulating space of a sealing, and each is insulated isolation between mutually completely can to guarantee described cable, and each has higher electric clearance and creepage distance between mutually to make described cable.
In a kind of preferred embodiment, described insulation holder 3 comprises keeper 33 and fixture 34, and described keeper 33 all has with described fixture 34 through hole coordinating with described cable; The spacing head 331 of described keeper 33 is positioned at described insulation booth 2, and the through hole of described insulation booth 2 bottoms is passed in bottom, and is connected with the inner hole thread of described fixture 34 heads; The head of described fixture 34 is positioned at insulation booth 2 described in described mounting box 1 inner support, and bottom is threaded with described locating part 31 through the through hole of described mounting box 1.
Described insulation holder 3 can be comprised of two parts, and two parts coordinate installs described insulation booth 2, and a part is described insulation booth 2 location, and another portion is that described insulation booth 2 is installed.Described keeper 33 is installed by described insulation booth 2 location and with described fixture 34, and described fixture 34 is arranged on described mounting box 1 allocation really.
In further preferred embodiment, described insulation holder 3 also comprises cable holder 35, and described cable holder 35 has the through hole coordinating with described cable, and described cable holder 35 is connected with the inner hole thread of described keeper 33 heads.
The interior cable holder 35 that can also have for described cable location of described insulation holder 3, described cable holder 35 can increase the stability of described cable.
To sum up, described insulation holder 3 can be comprised of two parts, also can be formed by three parts, the composition form of described insulation holder 3 is not only confined to the situation described in above-described embodiment, can realize cable by and the parts of the version of fixing other of described insulation booth 2 also can be applied in the present invention.
In another kind of concrete execution mode, described sealing ring 32 is positioned at the through hole that described keeper 33 coordinates with described cable.
Described sealing ring 32 can guarantee the sealing of described insulation booth 2, in order better to guarantee the sealing of described insulation booth 2, can between each adjacent parts, sealing ring or sealing gasket be all set, for example, between described keeper 33 and described insulation booth 2, between described insulation booth 2 and described fixture 34, between described locating part 31 and described mounting box 1 etc.
In a kind of preferred embodiment, described connection box for motor also comprises the prolongation box 4 being communicated with described mounting box 1, and another cable inlet 21 of described insulation booth 2 is positioned at described insulation booth 2 towards a side of described prolongation box 4.
Another cable inlet of described connection box for motor is positioned at the side of described insulation booth 2, the direction that cable is introduced towards the outside, and described external cable is introduced by described prolongation box 4.
In further preferred embodiment, the cable inlet 21 of described insulation booth 2 sides has cable positioning seat 41, and described cable positioning seat 41 has the through hole coordinating with described cable.
Described cable positioning seat 41 can by described external cable stable be positioned at described cable inlet 21, between described cable positioning seat 41 and described cable, also sealing device can be set, can guarantee the sealing of described insulation booth 2.
Described motor cable can directly be connected also and can be connected by electrical connector in described insulation booth 2 inside with described external cable, preferred described electrical connector, and described electrical connector can guarantee the reliability that cable connects.
In sum, described insulation booth 2 and described insulation holder 3 are made by insulating material, insulating material has many types and grade, and any one insulating material is used for making described insulation booth 2 and described insulation holder 3 can be realized in the present invention the insulation isolation between cable triple line.And in the prior art, the insulator of terminal box need be made by special insulating material, cost is higher, at use procedure ratio, is easier to damage.The cost of the insulation booth 2 of connection box for motor provided by the invention and insulation holder 3 is lower, and easy accessibility, is convenient to installation and maintenance, also at all faying faces, is specially provided with sealing device, has guaranteed reliable insulated enclosure effect.
Above connection box for motor provided by the present invention is described in detail.Applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection range of the claims in the present invention.
Claims (8)
1. a connection box for motor, comprises mounting box (1), it is characterized in that, also comprises three insulation booths (2), and three described insulation booths (2) are installed in described mounting box (1), and insulation booth described in each (2) has two cable inlets (21); Described insulation booth (2) has insulation holder (3), described insulation holder (3) has the through hole coordinating with cable, described insulation holder (3) is through the through hole of described insulation booth (2) and described mounting box (1) bottom, and two ends are located by locating part (31) respectively;
Described insulation holder (3) comprises keeper (33) and fixture (34), and described keeper (33) all has with described fixture (34) through hole coordinating with described cable; The spacing head (331) of described keeper (33) is positioned at described insulation booth (2), and the through hole of described insulation booth (2) bottom is passed in bottom, and is connected with the inner hole thread of described fixture (34) head; The head of described fixture (34) is positioned at insulation booth (2) described in described mounting box (1) inner support, and bottom is threaded with described locating part (31) through the through hole of described mounting box (1).
2. connection box for motor as claimed in claim 1, is characterized in that, described insulation holder (3) one end has spacing head, and the other end is threaded with described locating part (31).
3. connection box for motor as claimed in claim 2, is characterized in that, described locating part (31) has the screwed hole coordinating with described insulation holder (3), and described locating part (31) is arranged on the bottom of described mounting box (1) by bolt.
4. connection box for motor as claimed in claim 3, is characterized in that, described insulation holder (3) also comprises sealing ring (32), and described sealing ring (32) is positioned at the through hole that described insulation holder (3) coordinates with described cable.
5. the connection box for motor as described in claim 1 to 4 any one, it is characterized in that, described insulation holder (3) also comprises cable holder (35), described cable holder (35) has the through hole coordinating with described cable, and described cable holder (35) is connected with the inner hole thread of described keeper (33) head.
6. connection box for motor as claimed in claim 4, is characterized in that, described sealing ring (32) is positioned at the through hole that described keeper (33) coordinates with described cable.
7. the connection box for motor as described in claim 1 to 4 any one, it is characterized in that, described connection box for motor also comprises the prolongation box (4) being communicated with described mounting box (1), and another cable inlet (21) of described insulation booth (2) is positioned at described insulation booth (2) towards a side of described prolongation box (4).
8. connection box for motor as claimed in claim 7, is characterized in that, the cable inlet (21) of described insulation booth (2) side has cable positioning seat (41), and described cable positioning seat (41) has the through hole coordinating with described cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110459010.8A CN102522846B (en) | 2011-12-31 | 2011-12-31 | Wiring box for motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110459010.8A CN102522846B (en) | 2011-12-31 | 2011-12-31 | Wiring box for motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102522846A CN102522846A (en) | 2012-06-27 |
| CN102522846B true CN102522846B (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110459010.8A Active CN102522846B (en) | 2011-12-31 | 2011-12-31 | Wiring box for motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102522846B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2317574Y (en) * | 1997-10-09 | 1999-05-05 | 刘亚茹 | Insulating sealing lead wire device |
| CN1551455A (en) * | 2003-03-24 | 2004-12-01 | ��ʽ�����Զ��������缼���о��� | Connecting structure for electric wire to shield case of apparatus |
| CN202475114U (en) * | 2011-12-31 | 2012-10-03 | 南车株洲电机有限公司 | Motor conjunction box |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2005101616A1 (en) * | 2004-04-15 | 2008-03-06 | 株式会社ミツバ | Brushless motor |
-
2011
- 2011-12-31 CN CN201110459010.8A patent/CN102522846B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2317574Y (en) * | 1997-10-09 | 1999-05-05 | 刘亚茹 | Insulating sealing lead wire device |
| CN1551455A (en) * | 2003-03-24 | 2004-12-01 | ��ʽ�����Զ��������缼���о��� | Connecting structure for electric wire to shield case of apparatus |
| CN202475114U (en) * | 2011-12-31 | 2012-10-03 | 南车株洲电机有限公司 | Motor conjunction box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102522846A (en) | 2012-06-27 |
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Inventor after: Wang Hu Inventor after: Cheng Xi Inventor after: Jiang Youming Inventor after: Deng Yaoqiang Inventor after: Zhou Limin Inventor after: Huang Pengcheng Inventor after: Su Shihu Inventor before: Wang Hu Inventor before: Deng Yaoqiang Inventor before: Zhou Limin Inventor before: Huang Pengcheng Inventor before: Su Shihu |
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Free format text: CORRECT: INVENTOR; FROM: WANG HU DENG YAOQIANG ZHOU LIMIN HUANG PENGCHENG SU SHIHU TO: WANG HU CHENG XI JIANG YOUMING DENG YAOQIANG ZHOU LIMIN HUANG PENGCHENG SU SHIHU |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 412000 Tianxin hi tech park, Shifeng District, Zhuzhou City, Hunan Province Patentee after: CRRC Zhuzhou Electric Co.,Ltd. Address before: 412000 Tianxin hi tech park, Shifeng District, Zhuzhou City, Hunan Province Patentee before: CSR ZHUZHOU ELECTRIC Co.,Ltd. |
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Effective date of registration: 20230411 Address after: Room 1108, 11th Floor, Building 1, Hunan (Zhuzhou) Employment and Entrepreneurship Guidance Center, Yunlong Demonstration Zone, Zhuzhou City, Hunan Province, 412000 Patentee after: Hunan CRRC Shangqu Electric Co.,Ltd. Address before: 412000 Tianxin hi tech park, Shifeng District, Zhuzhou City, Hunan Province Patentee before: CRRC Zhuzhou Electric Co.,Ltd. |
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| TR01 | Transfer of patent right |