CN211505636U

CN211505636U - Measuring junction box for motor

Info

Publication number: CN211505636U
Application number: CN201922365911.5U
Authority: CN
Inventors: 孙文斌
Original assignee: Jiangsu Dongjia Electrical Co ltd
Current assignee: Jiangsu Dongjia Electrical Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-09-15
Anticipated expiration: 2029-12-25

Abstract

The utility model discloses a measuring junction box for motor, concretely relates to terminal box technical field, which comprises an outer shell, be provided with the wiring board on the shell lateral wall, be fixed with a plurality of terminals on the wiring board, outer cavity is provided with the fixed plate, be connected with the connecting rod between fixed plate and the shell inner wall, the fixed plate bottom is provided with the fin, the fixed plate surface is provided with measuring device, the last measuring connecting wire that is connected with of measuring device, the outside parcel of measuring connecting wire has the brass shielding net, outer cavity top is provided with out the fan and the bottom is provided with the inlet fan. The utility model discloses the electromagnetic shield layer that sets up and can effectual reduction electromagnetic interference at the outside brass shielding net of measurement connecting wire to improve measuring device measuring precision, promote the effect of motor measurement, utilize a plurality of terminal connections a plurality of motors that need to measure, can improve measurement of efficiency.

Description

Measuring junction box for motor

Technical Field

The utility model relates to a terminal box technical field, more specifically say, the utility model relates to a measuring terminal box is used to motor.

Background

An electric Motor (Motor) is a device that converts electrical energy into mechanical energy. The electromagnetic power generator utilizes an electrified coil (namely a stator winding) to generate a rotating magnetic field and acts on a rotor (such as a squirrel-cage closed aluminum frame) to form magnetoelectric power rotating torque. The motors are divided into direct current motors and alternating current motors according to different power supplies, most of the motors in the power system are alternating current motors, and can be synchronous motors or asynchronous motors (the rotating speed of a stator magnetic field of the motor is different from the rotating speed of a rotor to keep synchronous speed). The motor mainly comprises a stator and a rotor, and the direction of the forced movement of the electrified conducting wire in a magnetic field is related to the current direction and the direction of a magnetic induction line (magnetic field direction). The working principle of the motor is that the magnetic field exerts force on current to rotate the motor. After the motor is produced, the performance of the motor needs to be measured. In the prior art, a junction box is usually adopted to connect a motor and measure basic parameters of the motor, but the measurement mode can only measure a single motor once, and in the measurement process, the heat quantity in the box body is high, and the box body is easily interfered by electromagnetic signals, so that the measurement result is not accurate enough.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defect of prior art, the embodiment of the utility model provides a measuring junction box is used to motor.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a measuring junction box for motor, includes the shell, be provided with the wiring board on the shell lateral wall, be fixed with a plurality of terminals on the wiring board, the shell inner chamber is provided with the fixed plate, be connected with the connecting rod between fixed plate and the shell inner wall, the fixed plate bottom is provided with the fin, the fixed plate surface is provided with measuring device, the last measuring connecting wire that is connected with of measuring device, it has brass shielding net to measure the outside parcel of connecting wire, shell inner chamber top is provided with out the fan and the bottom is provided with into fan, the inside electromagnetic shield layer that is provided with of shell, shell top and bottom all are provided with the vent, the vent outside is provided with.

In a preferred embodiment, a support rod is further connected to the bottom of the housing, and a bottom plate is fixed to the bottom end of the support rod.

In a preferred embodiment, the measuring connection line ends penetrate through the casing and the electromagnetic shielding layer to be connected with the plurality of connection posts, and the fixing plate is arranged between the air inlet fan and the air outlet fan.

In a preferred embodiment, the air outlet fan is disposed right below the top vent of the housing, the air inlet fan is disposed right above the bottom vent of the housing, and the fixing plate is fixedly connected to the housing through a connecting rod.

In a preferred embodiment, the number of the ventilation openings is set to be a plurality, and the magnetic dust-proof net is attached to the outer wall of the shell.

In a preferred embodiment, a temperature sensor and a smoke sensor are further arranged on the fixing plate, and input ends of the temperature sensor and the smoke sensor are connected with an external display component through a measuring connecting wire and a binding post.

The utility model discloses a technological effect and advantage:

1. the measuring device is used for measuring various basic parameters in the working process of the motor, the air outlet fan and the air inlet fan work simultaneously in the measuring process, air is sucked from the bottom to the inside of the shell, air is removed from the top, air circulation is completed, a large amount of heat generated by the measuring device in the working process is taken out of the shell, the temperature of the junction box can be effectively reduced, and the stability is improved;

2. through the electromagnetic shield layer that sets up and can effectually reduce electromagnetic interference at the outside brass shielding net of measurement connecting wire to improve measuring device measuring precision, promote the measured effect of motor, utilize a plurality of terminal connections to need measured motor, can improve measurement of efficiency.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic diagram of a detailed structure of the position a in fig. 1 according to the present invention.

The reference signs are: the device comprises a shell 1, a wiring board 2, a wiring post 3, a fixing plate 4, a connecting rod 5, a heat radiating fin 6, a measuring device 7, a measuring connecting wire 8, a smoke sensor 9, a fan outlet 10, a fan inlet 11, an electromagnetic shielding layer 12, a ventilation opening 13, a magnetic dust-proof net 14, a supporting rod 15, a bottom plate 16 and a temperature sensor 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

According to the measuring terminal box for motor that 1-2 is shown, including shell 1, be provided with wiring board 2 on the shell 1 lateral wall, be fixed with a plurality of terminals 3 on the wiring board 2, shell 1 inner chamber is provided with fixed plate 4, be connected with connecting rod 5 between fixed plate 4 and the shell 1 inner wall, fixed plate 4 bottom is provided with fin 6, fixed plate 4 surface is provided with measuring device 7, be connected with on the measuring device 7 and measure connecting wire 8, it has brass shielding net to measure 8 outside parcel of connecting wire, shell 1 inner chamber top is provided with out fan 10 and the bottom is provided with into fan 11, shell 1 is inside to be provided with electromagnetic shield layer 12, shell 1 top and bottom all are provided with vent 13, vent 13 outside is provided with magnetism and inhales dust screen 14.

The bottom of the shell 1 is also connected with a supporting rod 15, a bottom plate 16 is fixed at the bottom end of the supporting rod 15, the end part of the measuring connecting line 8 penetrates through the shell 1 and the electromagnetic shielding layer 12 to be connected with the plurality of wiring terminals 3, the fixing plate 4 is arranged between the air inlet fan 11 and the air outlet fan 10, and the supporting rod 15 is arranged to increase the distance between the shell 1 and the ground and improve the air flow suction amount; the air outlet fan 10 is arranged right below a vent 13 at the top of the shell 1, the air inlet fan 11 is arranged right above the vent 13 at the bottom of the shell 1, the fixing plate 4 is fixedly connected with the shell 1 through a connecting rod 5, and the air inlet fan 10 and the air outlet fan 11 can accelerate the flowing speed of air flow and accelerate heat dissipation; the quantity of vent 13 sets up to a plurality ofly, dust screen 14 is laminated on the outer wall of shell 1 to the magnetism, still be provided with temperature sensor 17 and smoke transducer 9 on the fixed plate 4, temperature sensor 17 and smoke transducer 9's input is connected with outside display part through measuring connecting wire 8 and terminal 3, and wherein, temperature sensor 17 model is MF53, and smoke transducer 9 model is NAP-07, can detect the inside environment of terminal box at the in-process of work.

The utility model discloses the theory of operation:

referring to the attached drawings 1-2 of the specification, in the use process, utilize a plurality of terminals 3 to connect a plurality of motors that need to be measured, and electrify the motor, utilize measuring device 7 to measure each item of basic parameter in the motor working process, and at the measuring in-process, go out fan 10 and air inlet fan 11 simultaneous working, breathe in to inside from the bottom of shell 1, from the top degasification, accomplish the air current circulation, bring out a large amount of heat that measuring device 7 produced in the working process to the outside of shell 1, magnetism is inhaled dust screen 14 simultaneously and can effectually reduce the inside that outside dust got into shell 1, and the electromagnetic shield 12 that sets up and the brass shield net that is measuring the connecting wire 8 outside can effectual reduction electromagnetic interference, in order to improve measuring device 7 measuring accuracy, promote the effect of measuring the motor.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed; secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other; and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A measuring junction box for a motor comprises a shell (1), and is characterized in that: a wiring board (2) is arranged on the side wall of the shell (1), a plurality of wiring posts (3) are fixed on the wiring board (2), a fixed plate (4) is arranged in the inner cavity of the shell (1), a connecting rod (5) is connected between the fixed plate (4) and the inner wall of the shell (1), the bottom of the fixed plate (4) is provided with a radiating fin (6), the surface of the fixed plate (4) is provided with a measuring device (7), the measuring device (7) is connected with a measuring connecting wire (8), the exterior of the measuring connecting wire (8) is wrapped with a brass shielding net, the top of the inner cavity of the shell (1) is provided with a fan outlet (10) and the bottom is provided with a fan inlet (11), the electromagnetic shielding layer (12) is arranged inside the shell (1), the top and the bottom of the shell (1) are provided with ventilation openings (13), and the external parts of the ventilation openings (13) are provided with magnetic suction dust screens (14).

2. A measuring junction box for an electrical machine according to claim 1, characterized in that: the bottom of the shell (1) is also connected with a support rod (15), and a bottom plate (16) is fixed at the bottom end of the support rod (15).

3. A measuring junction box for an electrical machine according to claim 1, characterized in that: the measuring connecting line (8) end penetrates through the shell (1) and the electromagnetic shielding layer (12) to be connected with the plurality of binding posts (3), and the fixing plate (4) is arranged between the air inlet fan (11) and the air outlet fan (10).

4. A measuring junction box for an electrical machine according to claim 1, characterized in that: go out fan (10) and set up under shell (1) top vent (13), advance fan (11) and set up directly over shell (1) bottom vent (13), fixed plate (4) are through connecting rod (5) and shell (1) fixed connection.

5. A measuring junction box for an electrical machine according to claim 1, characterized in that: the quantity of vent (13) sets up to a plurality ofly, dust screen (14) are laminated on the outer wall of shell (1) to magnetism.

6. A measuring junction box for an electrical machine according to claim 1, characterized in that: the fixing plate (4) is further provided with a temperature sensor (17) and a smoke sensor (9), and the input ends of the temperature sensor (17) and the smoke sensor (9) are connected with an external display component through a measuring connecting line (8) and a binding post (3).