CN209298640U - A kind of switch-box of magnetic suspension train - Google Patents

Abstract

The utility model provides a kind of switch-box of magnetic suspension train, the connection of the direct current for controlling magnetic suspension train main power grid and onboard power system controller, boost chopper, DC-DC converter, inverter, eddy-current brake and battery.The switch-box of the utility model has shell, and shell is made of cabinet matrix, top plate and side plate, and has low tension switch component and current sense device assembly in the shell of switch-box.The switch-box of the utility model can satisfy levitation train different operating system, particular job environment and light-weighted requirement, it is ensured that major loop state reliably switches, and operates normally levitation train under different operating conditions, has high reliability and height maintainable.

Description

A kind of switch-box of magnetic suspension train

Technical field

The utility model relates to a kind of switch-boxes, and in particular to a kind of novel magnetically levitated switch-box belongs to rail traffic Control equipment technical field.

Background technique

With the development of national economy, communications and transportation growing tension simultaneously becomes a key factor for restricting economic development, Alleviating and improving traffic condition is current problem in the urgent need to address.As novel road transport, magnetic-levitation train according to Train is suspended on track by electromagnetic force, is promoted with linear motor, it does not have wheel and corresponding transmission mechanism, with ground without Mechanical Contact can at a high speed, smoothly be run, and operation maintenance expense is low, non-environmental-pollution, before having good development Scape.Wherein the F-Zero of high-speed maglev train can reach 500 kilometers or more, be the most fast ground passenger traffic work in the world today Tool.The speed per hour of medium-and low-speed maglev train is between 100-120 kilometers, and with energy-saving and environmental protection, noise is small, turning radius is small, climbing The characteristics such as ability height, cost is slightly above light rail, and is far below subway.

Train traction and electric braking kinetic energy, suspension guide function and auxiliary power supply function are the most basic three of magnetic-levitation train Big function, and influence three basic sexual factors of train operation quality.Therefore, design optimization, the most failure guiding peace the most Full onboard power system scheme is to ensure that one of the important guarantee of magnetic-levitation train safety and high-quality operation.

In high-speed maglev train onboard power system, the 440V DC grid being made of 440V boost chopper is main power grid, All electric components are all directly or indirectly to obtain energy from the main power grid of 440V on vehicle.And BV440 switch-box is as 440V Most important relay station in DC grid, can the superiority and inferiority of performance directly influences magnetic-levitation train safety, high-speed cruising.

Utility model content

The utility model exactly for the technical problems in the prior art, provides a kind of novel magnetically levitated opened with 440V Case is closed, which meets levitation train different operating system, particular job environment and light-weighted requirement, it is ensured that main Loop state reliably switches, and operates normally levitation train under different operating conditions, has the spies such as high reliablity, maintainable good Point.

The utility model provides a kind of switch-box of magnetic suspension train, the main power grid of the direct current for controlling magnetic suspension train With the connection of onboard power system controller, boost chopper, DC-DC converter, inverter, eddy-current brake and battery, wherein Onboard power system controller is used to complete the on/off switch control of switch-box, and receives the on/off switch control feedback information of switch-box；It rises Pressure chopper is provided to switch-box by the electric energy of Vehicular electric generator by rectification and after boosting to charge to battery, and The battery current analog signal of real-time reception switch-box feedback；The direct current that DC-DC converter provides for changing switch-box Voltage；The DC power conversion that inverter is used to provide switch-box is alternating current；Eddy-current brake is used for braking magnetic suspension train. The switch-box has shell, which is made of cabinet matrix, top plate and side plate, has low pressure in the shell of the switch-box Switch block and/or current sense device assembly.

Preferably, cabinet matrix is integrally formed by aluminium alloy monoblock cast.

By the way that cabinet matrix to be integrally formed by aluminium alloy monoblock cast, so that guaranteeing process economy in casting Meanwhile each structure feature (such as radiating fin) of cabinet matrix is contained, it is machined out as required again after casting and forming.It is logical It crosses above-mentioned integrated molding and avoids the techniques such as welding, extruding, so as to avoid forming residual stress and deformation, it is strong to improve cabinet Degree and performance, advantageously reduce box sizes, and avoiding needs additional increased size since machine such as adds at the techniques, improve cabinet body Compactness reduces the weight of entire cabinet.Simultaneously because cabinet matrix radiating fin is integrally formed with body, without scattered Thermal contact resistance between hot fin and substrate reduces the thermal resistance of the entire heat-transfer path of element, mentions under limited heat dissipation area The high radiating efficiency of radiator, creates advantage to be further reduced the size of cabinet body.From the above using casting Aluminium alloy improves the intensity of cabinet, can guarantee that meeting vertical and lateral acceleration amplitude is 30m/s2, longitudinal is 50m/ S2, time are the one third that weight is only steel plate under 30ms impact requires, and significantly reduce the weight of cabinet, meet The weight demands of switch-box harshness.

Preferably, by L-type press strip and bolt, top plate, handle assembly and side plate are connect with cabinet matrix respectively, L-type pressure Item has the slot for being embedded with seal foaming item.

Contact area between each connecting component is increased using L-type press strip, seal foaming item is added, further increases The sealing performance of connection, has in addition to this been coated with sealant in each junction, passes through above-mentioned measure the utility model case Body can reach the degree of protection of IP65.

Preferably, top plate and side plate thickness are 1mm.

Preferably, reinforcing rib is provided on top plate and/or side plate.

By the way that the top plate 2 with larger area, side plate 4 are designed as 1mm thickness, the weight of switch-box can be reduced.Meanwhile It is provided with reinforcing rib on top plate and/or side plate, the rigidity of top plate, side plate can be effectively improved by simple Sheet Metal Forming Technology And intensity, it can satisfy the impact vibration requirement of mobile unit in the case where not increasing weight.

Preferably, the front panel of cabinet matrix is equipped with electric connector, and electric connector is reliable by bolt and cabinet matrix Connection, and have sealing ring between electric connector and cabinet matrix.

It is bolted to cabinet matrix and sealing ring is set, the electric connector is enabled to have the protection of IP67 Grade.

Preferably, in low tension switch component include fuse, relay, contactor and current limliting divider resistance, and fuse, At least two in relay, contactor and current limliting divider resistance are mounted on the same mounting plate.

By being integrated with breaker of plastic casing, contactor and fuse in switch-box, system short-circuit defencive function can be realized, Failure propagation when preventing short circuit.And at least two in fuse, relay, contactor and current limliting divider resistance are mounted on On the same mounting plate, i.e., by being routed assembler outside by internal components modularized design, using prewiring design scheme cabinet body On the one hand part can make distance between above-mentioned component arrange as closely as possible, make full use of the space in switch-box, while being capable of energy Enough that assembly device is routed outside cabinet body, so that operating space is big, installation effectiveness is high, is remarkably improved the maintainability of complete machine.

It preferably, include 2n fuse in low tension switch component, 2n fuse, which is arranged in, to be parallel to each other and have respectively There are the first row and second row of n fuse, wherein n is positive integer.

It preferably, include 10 fuses in low tension switch component.

Preferably, n fuse of first row is shorted by the first connecting copper bar, and n fuse of first row and the At least one fuse of two rows is shorted by the second connecting copper bar.

Preferably, it is at L-shaped with the second copper bar to be connected as shape for the first copper bar.

The problem of above-mentioned design can efficiently use the depth dimensions of switch-box, avoid narrow width size, using minimum Copper bar at least one fuse of n fuse of first row and second row is shorted together.

Preferably, one end of the first connecting copper bar is equipped with the hole for the connection of external separated time.

The hole is connected for external separated time, is enabled to terminal easily easy to connect and is solved to fuse with another set Device interference problem

It preferably, is oblique V-shaped for electric connector to be connected to fuse.

Therefore, Nature Link, terminal are twisted from top to bottom without turn, bolt obliquely after cable comes out from electric connector 19 Tightly, operating space is big, is able to solve when distance is close between fuse and electric connector, and cable connects after coming out from electric connector The problem of turning radius and cabling space deficiency on to fuse.

Preferably, there is line support in low tension switch component, line support is used to fix the cable and/or relay of fuse Cable.

Preferably, longitudinal low tension switch component tie pole and lateral low tension switch component are provided in low tension switch component Tie pole.

Longitudinal low tension switch component tie pole can be used in longitudinal cabling of fixed contact, resistance, external cable, laterally Low tension switch component tie pole can be used in the lateral cabling of fixed contact, resistance, external cable.

Preferably, current sense device assembly includes multiple current sensors, and multiple current sensors are on specific plane Corresponding multiple projections have the part of overlapping.

Preferably, multiple current sensors are divided into the second layer current sense of first layer sensor and installation on the support frame Device, first layer current sensor are stacked up and down with second layer current sensor.

Preferably, it is instead filled before and after first layer current sensor and second layer current sensor.

Upper and lower lamination arrangement is effectively utilized the height space of cabinet body, and support frame is greatly saved between upper layer and lower layer Space, facilitate the current sensor of mounting arrangements lower layer, it is simple and reliable for structure and beautiful, and upper layer sensor and lower layer It is anti-wrongly installed before and after sensor to have opened sensor external plug.

Preferably, current sense components include 4 first layer current sensors and 4 second layer current sensors 26.

Preferably, there is terminal support seat 27, the external cable and electric current of current sense components pass in current sense components The inside cable of sense component is connected to altogether on terminal support seat 27.

Multiple current sensors pass through unified cable and are external to external battery as a result, and each sensor can be single Solely maintenance, so that subsequent sensor maintenance and installation are more convenient.

Detailed description of the invention

The above content and following specific embodiment of the utility model can obtain more preferably when reading in conjunction with the drawings Understanding.It should be noted that attached drawing is only used as the example of claimed utility model.In the accompanying drawings, identical attached drawing Label represents same or similar element.

Fig. 1 shows the primary association pair in magnetic-levitation train of the switch-box for magnetic suspension train of the utility model As.

Fig. 2 is the cabinet body outline drawing of the switch-box for magnetic suspension train of the utility model.

Fig. 3 is the installation diagram of the electric connector of the switch-box for magnetic suspension train of the utility model.

Fig. 4 is the detailed construction explosive view of the switch-box for magnetic suspension train of the utility model.

Fig. 5 is the top view of the switch-box for magnetic suspension train of the utility model.

Fig. 6 is the layout drawing for maglev low tension switch component of the utility model.

Fig. 7 is the layout drawing for maglev current sense device assembly of the utility model.

Specific embodiment

The detailed features and advantage of narration the utility model, content are enough to make in detail in a specific embodiment below Anyone skilled in the art understand the technology contents of the utility model and implement accordingly, and according to theory disclosed by this specification Bright book, claim and attached drawing, skilled person readily understands that the relevant purpose of the utility model and advantage.

As shown in Figure 1, switch-box BV440 is the switch-box for magnetic suspension train of the utility model, primary association Object be onboard power system controller BNS, boost chopper HS_1, HS_2, HS_3, HS_4, DC440V/DC24 straight convertor, Inverter WR, eddy-current brake and 440 batteries.

The effect of the above-mentioned affiliated partner of the switch-box for being used for magnetic suspension train of the utility model will be described respectively below.

(1) onboard power system controller: according to full-vehicle control logic, completing the control of switch-box BV440 internal switch on/off switch, And receive each switch state feedback information.

(2) boost chopper: the alternating current of linear electric generator output and contactless receiving coil input power are passed through Switch-box BV440 is supplied to after rectification and boosting, and the 440V battery current of real-time reception switch-box BV440 feedback simulates letter Number.

(3) DC440V/DC24 straight convertor: one of the load of switch-box BV440, for DC440V to be transformed into DC24V。

(4) inverter: one of switch-box BV440 load, for DC440V to be transformed into AC230V.

(5) eddy-current brake: one of switch-box BV440 load, for realizing vehicle braking function.

(6) energy in bidirectional flow, boost chopper 440V battery: are realized between 440V battery and switch-box BV440 HS_1, HS_2, HS_3, HS_4 output energy charge to battery by switch-box BV440, and 440 batteries pass through switch Case BV440 is the other load supplyings of 440V.

Fig. 2 is the cabinet body outline drawing of switch-box BV440, as shown in Fig. 2, switch-box BV440 shell is by cabinet matrix 1, top Plate 2, handle assembly 3 and 2 side plates 4 form, and wherein 1 material of cabinet matrix is cast aluminium alloy gold, and monoblock cast is integrally formed, When casting while guaranteeing process economy, each structure feature such as radiating fin of cabinet matrix 1 etc., casting and forming are contained It is machined out as required again afterwards.The techniques such as welding, extruding are avoided by above-mentioned integrated molding, so as to avoid residual processing Stress and deformation improve cabinet intensity and performance, advantageously reduce box sizes, and avoiding needs volume since machine such as adds at the techniques Outer increased size, improves cabinet body compactness, reduces the weight of entire cabinet.Simultaneously because 1 radiating fin of cabinet matrix It is integrally formed with body, without the thermal contact resistance between radiating fin and substrate, reduces the entire heat-transfer path of element Thermal resistance improves the radiating efficiency of radiator under limited heat dissipation area, has created to be further reduced the size of cabinet body Sharp condition.The intensity of cabinet is improved using cast aluminium alloy gold from the above, can guarantee to meet vertical and lateral acceleration Degree amplitude is 30m/s2, and longitudinal is 50m/s2, and the time is the one third that the lower weight of 30ms impact requirement is only steel plate, significantly The weight for reducing cabinet, meet the weight demands of switch-box BV440 harshness.

As shown in figure 3, cabinet matrix 1 and top plate 2, handle assembly 3, the form for adding bolt between side plate 4 using L-type press strip It is attached, sulculus has been opened in L-type press strip and has been embedded in seal foaming item.It is increased between each connecting component using L-type press strip Contact area, add seal foaming item, further improve the sealing performance of connection, it is in addition to this equal in each junction It is coated with sealant, can reach the degree of protection of IP65 by above-mentioned measure the utility model cabinet.In order to reduce the weight, spy will have Top plate 2, the side plate 4 of larger area are designed as 1mm thickness, but since the cabinet body is mobile unit, need to meet wanting for impact vibration It asks, in order to improve the intensity of top plate 2, side plate 4, devises several reinforcing ribs on top plate 2, side plate 4, pass through simple presser Skill can effectively improve the stiffness and strength of top plate 2, side plate 4, and not increase weight.

As shown in figure 3,1 front panel of cabinet matrix is mounted with 12 electric connectors 19, electric connector 19 by 4 bolts with Cabinet matrix 1 is reliably connected, and has three-layer sealed circle between electric connector 19 and cabinet matrix 1, so that the connector has IP67 Degree of protection, meet the requirement of switch-box.Switch-box has 8 tip jacks, wherein 44 groups of outputs for switch-box BV400 Positive pole, 1 eddy-current brake positive pole, the public cathode of 1 power supply, 2 for 440V battery input anode with it is negative Pole；2 14 needle sockets, one of them is 24V power input port, a power interface for DC/DC device；2 37 needles letters Number socket, one of them is the 26 output signal port of current sensor for monitoring 440V battery current, another is output/defeated Enter control/monitoring signals port.

As shown in figure 4, switch-box is integrated with breaker of plastic casing 7, contactor 15 and fuse group 13, fuse group 13 includes 10 fuse FU1-FU10, for realizing system short-circuit defencive function, failure propagation when preventing short circuit.It is contacted by control 7 state of device 15 and breaker of plastic casing realizes the switching function of 440V power-supply system battery, load.In order to further decrease out The weight of case is closed, for fuse group 13 using being mounted directly without configuring fuse base, design considers property easy to change；Main circuit connects It connects as far as possible using copper bar.External signal input-output line is directly entered switching device, and centre is not provided with transition terminal row.Inside is set Set 8 accumulator cell charging and discharging current sensors 26, for external boost chopper acquire relevant mode analog quantity signal, probe power by Corresponding boost chopper supply, power supply are mutually indepedent.

As shown in Figures 4 and 5, if switch-box is compact-sized, package size is smaller, and it is more to be internally integrated device, will lead Cause installation maintenance space extremely limited, the difficulty that the installation and maintenance of device will become.In the switch-box of the utility model, lead to Cross following improvement, will lifting switch case installation maintenance performance.Specifically, in the present invention, by internal components mould Blockization design, using prewiring design scheme, by low tension switch device such as fuse FU1-FU10, relay 14, contactor 15, Current limliting divider resistance 16 is integrated in formation low tension switch component 5 on a mounting plate, and 8 about 26 current sensors are folded Layer integrated design forms current sense device assembly 6.By above-mentioned two component can before cabinet assembly first prewiring, complete low Compress switch the assembling of component 5 and 26 component 6 of current sensor, after low tension switch component 5 and 26 component 6 of current sensor are put again It is placed in cabinet body.Assembly device is routed outside cabinet body, operating space is big, and installation effectiveness is high, is remarkably improved safeguarding for complete machine Property.

As shown in fig. 6, low tension switch component 5 is integrated with fuse group 13, relay 14, contactor 15, current limliting partial pressure electricity The devices such as resistance 16.Fuse group 13 includes that 10 fuses FU1-FU10,10 fuse FU1-FU10 mainly play short-circuit protection Function, wherein fuse FU1-FU4 need to lead to 5 left side of low tension switch component due to narrow space in cabinet with external equipment line The distance between external electric connector 19 is very narrow, therefore fuse FU1-FU4 and 19 line of electric connector are very difficult. Cable is connected to turning radius on fuse FU1-FU4 after coming out from electric connector 19 and cabling space is inadequate, Gu Te general Connection copper sheet 12 is designed to oblique V-shaped, cable from electric connector 19 come out after Nature Link obliquely, terminal is without turning round, spiral shell Bolt is tightened from top to bottom, and operating space is big, efficiently solves the above problem.

As shown in fig. 6, pressing circuit requirement, fuse FU1, FU2, FU3, FU4, FU7, FU8 need to be shorted together, fuse FU9, FU10 need to be shorted together, but since switch-box BV440 width dimensions are limited, can not a row accommodate 6 fuses, at most It can only accommodate 5 fuses, therefore 10 fuses are divided into two rows, FU1, FU2, FU3, FU4, FU7 are a row, FU5, FU6, FU8, FU9, FU10 are a row.Wherein FU1, FU2, FU3, FU4, FU7 are shorted together by first connecting copper bar 20, then Second connecting copper bar 21 is stretched out in the bottom FU7 and connects FU8, forms a big L-type.Above-mentioned design can efficiently use switch-box The depth dimensions of BV440, the problem of avoiding narrow width size, using least copper bar by fuse FU1, FU2, FU3, FU4, FU7, FU8 are shorted together.Separately since the first connecting copper bar 20 needs outside separated time to cabinet body, it is contemplated that terminal it is easy to connect with And the first connecting copper bar 20 design growth L-type two M6 are opened at top fold with another set fuse interference problem Threaded hole is connected for external separated time.It is shorted between fuse FU9, FU10, then designs a rectangular copper bar and lie low in fuse Under, it is succinct reliable, facilitate external cabling.

As shown in fig. 6, ingot line support is placed between two rows of fuses, between fuse and relay, for solid Determine the secondary cable of fuse, relay.Two longitudinal low tension switch component tie poles are provided at 5 both ends of low tension switch component 17, right-hand end increases a lateral low tension switch component tie pole 18.Longitudinal low tension switch component tie pole 17 is used for cloth Set longitudinal cabling between fuse group 13, relay 14 and rear end sensor, breaker, lateral low tension switch component tie pole 18 are used for the lateral cabling of fixed contact, resistance, external cable.In addition to this, as shown in figure 5, increasing on cabinet matrix 1 10 two first cabinet tie pole 8, the second cabinet tie pole longer tie poles, for arranging that electric connector 19 enters cabinet body The interior cabling between internal each device.Total principle is that only the cable in arrangement group, cabinet are pricked for the tie poles of various components Line bar then arranges that external cable, inside cable are taken their own roads with external cable, is staggeredly arranged, primary line separates cloth with secondary line It sets.

As shown in fig. 7, current sense device assembly 6 is integrated with 8 current sensors 26, since 26 size of current sensor is big And external cable is more, needs certain wiring space, required installation space is larger, in addition in order to reduce switch-box BV440 size, The structure of the component is caused to design more difficult.Finally about 26 lamination of current sensor is arranged, upper layer sensor and lower layer Anti- dress, the current sensor 26 on upper layer is installed on a few font support frames 25, solves the above problem before and after sensor.Up and down Lamination arranges the height space for being effectively utilized switch-box BV440, and upper layer sensor is opened with anti-wrongly installed before and after underlying transducer Sensor external plug, a few font support frames 25 are greatly saved the space between upper layer and lower layer, facilitate under mounting arrangements The current sensor 26 of layer, it is simple and reliable for structure and beautiful.Due to 8 current sensors 26 by unified cable it is external To external battery, it is contemplated that subsequent sensor maintenance with it is easy for installation, in order to realize the maintainable theory of each sensor, A terminal support seat 27 is increased, external cable and inside cable are interrupted, is connected on terminal support seat 27 altogether.

The quantity of each component in above-described embodiment is listed in detail herein, so that those skilled in the art can implement this Utility model.

However should not be limited in the switch-box of the utility model includes that also should not be limited to lower component with lower component Particular number.Such as handle assembly is for the ease of the switch-box of mobile the utility model, is not to implement the utility model The essential component of technical solution.It illustratively include being divided into two rows of 10 to melt in the present embodiment, in low tension switch component Disconnected device, and 10 fuses are integrated on a mounting plate with relay 14, contactor 15, current limliting divider resistance 16 and are formed Low tension switch component 5, and according to actual needs, the fuse of other quantity of selection selects any number of relay 14, connects Tentaculum 15, current limliting divider resistance 16 and fuse are integrated in formation low tension switch component 5 on a mounting plate, also can be realized this Utility model is easily installed, improves the technical effect of operating efficiency.In addition, in the present embodiment that six in 10 fuses are molten Disconnected device FU1, FU2, FU3, FU4, FU7, FU8 are shorted by forming L-shaped first connecting copper bar and the second connecting copper bar, but according to The multiple fuses for being not limited to 6 can be shorted by the actual setting of switch-box.In addition, as long as the connecting copper bar used exists Meet it is few as much as possible in the case where the specific connection requirement of multiple fuses, can also be by multiple fuse by being formed as The connecting copper bar of other forms is shorted, such as may be selected for 6 fuses FU1, FU2, FU3, FU4, FU7, FU5 to be shorted to be formed It is T-shaped, or 5 fuses FU1, FU2, FU3, FU5, FU6 are shorted to form U-shaped etc..

Similarly, current sensor group is integrated to form using 8 about 26 stack-designs of current sensor in the present embodiment Part 6, but the quantity of current sensor 26 can be selected arbitrarily according to actual needs, it is not limited to 8, and with every in the present embodiment The upper and lower lamination of the mode of 4, layer places 8 current sensor purposes and is to make full use of the upper and lower level in switch-box BV440 empty Between, but multiple current sensors 26 also can have a placement that multilayer greater than 2 layers, be placed as left and right (level) lamination arrangement, placement It inconsistently arranges for every layer number, as long as objectively can be realized the technical effect saved space, facilitate installation, is regarded as Specific embodiment of the present utility model.

Here based on term and form of presentation be only intended to describe, the utility model should not be limited to these terms and Statement.It is not meant to exclude the equivalent features of any signal and description (or in which part) using these terms and statement, answer Recognize that various modifications that may be present should also be included in scope of the claims.Other modifications, variations and alternatives may also deposit ?.Correspondingly, claim should be regarded as covering all these equivalents.

Equally, it should be pointed out that although the utility model is described with reference to current specific embodiment, this skill Those of ordinary skill in art field it should be appreciated that more than embodiment be intended merely to illustrate the utility model, do not taking off Various equivalent change or replacement can be also made in the case where from the spirit of the present invention, therefore, as long as in the utility model The variation, modification of above-described embodiment will all be fallen in the range of following claims in spirit.

Claims (20)

1. a kind of switch-box of magnetic suspension train, the main power grid of direct current and onboard power system controller for controlling magnetic suspension train, The connection of boost chopper, DC-DC converter, inverter, eddy-current brake and battery, it is characterised in that:

The onboard power system controller is used to complete the on/off switch control of the switch-box, and receives the on/off switch of the switch-box Control feedback information；

The boost chopper is by the electric energy of Vehicular electric generator by being provided to the switch-box to institute after rectification and boosting It states battery to charge, and the battery current analog signal of the feedback of switch-box described in real-time reception；

The DC voltage that the DC-DC converter provides for changing the switch-box；

The DC power conversion that the inverter is used to provide the switch-box is alternating current；

The eddy-current brake is for braking the magnetic suspension train；

The switch-box has shell, and the shell is made of cabinet matrix, top plate and side plate, and the institute of the switch-box Stating has low tension switch component and current sense device assembly in shell.

2. switch-box according to claim 1, which is characterized in that the cabinet matrix by aluminium alloy monoblock cast one at Type.

3. switch-box according to claim 1, which is characterized in that by L-type press strip and bolt, the top plate, handle group Part and the side plate are connect with the cabinet matrix respectively, and the L-type press strip has the slot for being embedded with seal foaming item.

4. switch-box according to claim 1, which is characterized in that the top plate and the side plate thickness are 1mm.

5. switch-box according to claim 1, which is characterized in that be provided with and add on the top plate and/or the side plate Strengthening tendons.

6. switch-box according to claim 1, which is characterized in that the front panel of the cabinet matrix is equipped with electrical connection Device, the electric connector are reliably connected by bolt and the cabinet matrix, and the electric connector and the cabinet matrix Between have sealing ring.

7. switch-box according to claim 1, which is characterized in that include fuse, relay in the low tension switch component Device, contactor and current limliting divider resistance, and the fuse, the relay, the contactor and the current limliting divider resistance In at least two be mounted on the same mounting plate.

8. switch-box according to claim 7, which is characterized in that include the 2n fusing in the low tension switch component Device, the 2n fuses are arranged in the first row and second row for being parallel to each other and being respectively provided with the n fuses, Middle n is positive integer.

9. switch-box according to claim 8, which is characterized in that include 10 fusing in the low tension switch component Device.

10. switch-box according to claim 8, which is characterized in that n fuse of the first row passes through the first connection Copper bar is shorted, and the n fuse of the first row is connect at least one fuse of the second row by second Copper bar is shorted.

11. switch-box according to claim 10, which is characterized in that first connecting copper bar connect copper with described second It is at L-shaped that row is connected as shape.

12. switch-box according to claim 10, which is characterized in that one end of first connecting copper bar is equipped with for outer The hole of partial line connection.

13. switch-box according to claim 10, which is characterized in that for electric connector to be connected to the fuse Connection copper sheet is oblique V-shaped.

14. switch-box according to claim 7, which is characterized in that there is line support in the low tension switch component, it is described Line support is used to fix the cable of the fuse and/or the cable of the relay.

15. switch-box according to claim 7, which is characterized in that be provided in the low tension switch component longitudinal low Compress switch component tie pole and lateral low tension switch component tie pole.

16. switch-box according to claim 1, which is characterized in that the current sense device assembly includes that multiple electric currents pass Sensor, corresponding multiple projections of the multiple current sensor on horizontal plane or vertical plane have the part of overlapping.

17. switch-box according to claim 16, which is characterized in that the multiple current sensor is divided into first layer electric current The second layer current sensor of sensor and installation on the support frame, the first layer current sensor and the second layer electric current Sensor is stacked up and down.

18. switch-box according to claim 17, which is characterized in that the first layer current sensor and the second layer Anti- dress before and after current sensor.

19. switch-box according to claim 17, which is characterized in that the current sense components include 4 described first Layer current sensor and 4 second layer current sensors.

20. switch-box according to claim 16, which is characterized in that have terminal support in the current sense components The inside cable of seat, the external cable of the current sense components and the current sense components is connected to altogether on terminal support seat.