CN106383015A - Vibration testing mechanism for frame-type air circuit breaker - Google Patents

Vibration testing mechanism for frame-type air circuit breaker Download PDF

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Publication number
CN106383015A
CN106383015A CN201610961297.7A CN201610961297A CN106383015A CN 106383015 A CN106383015 A CN 106383015A CN 201610961297 A CN201610961297 A CN 201610961297A CN 106383015 A CN106383015 A CN 106383015A
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CN
China
Prior art keywords
frame
circuit breaker
motor
drive mechanism
screw mandrel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610961297.7A
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Chinese (zh)
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CN106383015B (en
Inventor
潘颖
杜向阳
罗旋
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Shanghai University of Engineering Science
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Shanghai University of Engineering Science
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Priority to CN201610961297.7A priority Critical patent/CN106383015B/en
Publication of CN106383015A publication Critical patent/CN106383015A/en
Application granted granted Critical
Publication of CN106383015B publication Critical patent/CN106383015B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00Vibration-testing of structures; Shock-testing of structures
    • G01M7/02Vibration-testing by means of a shake table
    • G01M7/025Measuring arrangements
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/3277Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The invention discloses a vibration testing mechanism for a frame-type air circuit breaker. The vibration testing mechanism comprises a tetragonal bearing frame, a circuit breaker mounting board, a manipulator, a worktable and a horizontal supporting platform. The fixed end of the manipulator is connected with a tension sensor. The tension sensor is connected with a fixing seat. The fixing seat is fixedly connected with the worktable. The circuit board mounting board is provided with the frame-type air circuit breaker and a frame outer cover. A rotating shaft transversely penetrates through the upper part of the frame outer cover. The rotating shaft is rotatably connected with a steel column. The manipulator can perform three-axis motion. On the condition that the free end of the manipulator contacts with the upper end of the steel column, the lower end of the steel column is inserted into an arc extinguishing chamber of the frame-type air circuit breaker and contacts with a moving contact. The vibration testing mechanism realizes reliability testing on moving contact and static contact switching-off in the frame-type air circuit breaker on the condition of variable load, and furthermore can supply a scientific basis for evaluating operation reliability of the frame-type air circuit breaker on the condition of variable loads.

Description

A kind of vibration-testing mechanism for frame circuit breaker
Technical field
The present invention is to be related to a kind of vibration-testing mechanism for frame circuit breaker, belongs to test equipment technical field.
Background technology
At present, in highway, railway, navigation transport, strong vibration, impact and nature special geographically at some Mechanical environment has become as one of key factor of the impact reliable and stable safe operation of electrical equipment.But at present with regard to electrically setting Standby reliability testing is still in the static test stage, and the movement segment such as vibration environment in order to finally solve electrical equipment adapts to Sex chromosome mosaicism, we are necessary to carry out vibration-testing, to improve, to identify and to confirm the adaptability to environment for the electrical equipment to be measured, are The operation of this equipment and use provide scientific basis.
Frame circuit breaker, mainly for the protection of low voltage electrical equipment, is allowed to from overcurrent, under-voltage, short circuit etc. is abnormal In the case of harm, also can be used as the infrequently operation of circuit under normal condition.Frame circuit breaker is also referred to as universal and breaks Road device, this chopper typically has the framework of a steel, and all of parts are installed in framework;Its capacity is larger, And the electrical apparatus release of several functions and more auxiliary contact can be installed, combined by different electrical apparatus releases and may be constructed different protections Characteristic, has wide range of applications.But there is presently no the reliability with regard to frame circuit breaker dynamic and static contact disconnection contact under varying load Property measuring technology, become evaluate functional reliability under varying load for the frame circuit breaker a difficult problem.
Content of the invention
The problems referred to above existing for prior art, it is an object of the invention to provide a kind of vibration for frame circuit breaker Mechanism for testing, carries out, to meet frame circuit breaker, the reliability testing that dynamic and static contact disconnects contact, for evaluating frame under varying load Functional reliability under varying load for the frame chopper provides scientific basis.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of vibration-testing mechanism for frame circuit breaker, including tetragonal body supporting frame, breaker mounting plate, machinery Arm, workbench and horizontal saddle, are respectively equipped with one on two longitudinal carriers positioned at described tetragonal body supporting frame side Longitudinal rail, is correspondingly provided with the slide block being adapted being slidably connected respectively with longitudinal rail on the side of described horizontal saddle, It is arranged with two X-axis guide rails above described horizontal saddle, the level that slidably connects in two X-axis guide rails is slided Frame, is symmetrically arranged on two with two Y-axis guide rails in described horizontal travelling carriage, and described workbench is slidably connected at two Y-axis guide rails On;The fixing end of described mechanical arm is connected with pulling force sensor, and described pulling force sensor is connected with fixed seat, described fixation Seat is fixedly connected with described workbench;Frame circuit breaker and frame cover are provided with described breaker mounting plate, described The top of frame cover is laterally equipped with rotary shaft, is rotatably connected to steel column in described rotary shaft;When described mechanical arm from During by holding inconsistent with the upper end of steel column, the lower end of steel column connects by the arc-chutes of insertion frame circuit breaker and with moving contact formation Touch.
A kind of embodiment, described horizontal travelling carriage does X-axis motion under the first drive mechanism, and described workbench is second Y-axis motion is done, described horizontal saddle does Z axis motion under the 3rd drive mechanism under drive mechanism.
A kind of embodiment, described first drive mechanism, the second drive mechanism and the 3rd drive mechanism are all using ball wire Bar drive mechanism.
As further embodiment, described first drive mechanism includes the first motor, the first screw mandrel and the first ball wire Stem nut pair, described first motor is fixed on the side of horizontal saddle being provided with two slide blocks and two slide blocks being located on this side Between, one end of described first screw mandrel is in transmission connection with described first motor, and the other end is located in the lower carriage of horizontal travelling carriage On, described first ballscrew nut fitting is set on the first screw mandrel and is fixedly connected with the lower carriage of horizontal travelling carriage.
As further embodiment, described second drive mechanism includes the second motor, the second screw mandrel and the second ball wire Stem nut pair, described second motor is fixed on one end of horizontal travelling carriage, one end of described second screw mandrel and described second motor It is in transmission connection, the other end is located on the lower carriage of workbench, described second ballscrew nut fitting is set on the second screw mandrel, And be fixedly connected with the lower carriage of workbench.
As further embodiment, described 3rd drive mechanism includes the 3rd motor, the 3rd screw mandrel and the 3rd ball wire Stem nut pair, described 3rd motor is fixed on the lower section of horizontal saddle, and one end of described 3rd screw mandrel is passed with described 3rd motor Be dynamically connected, the other end is vertically located on horizontal saddle, described 3rd ballscrew nut fitting be set on the 3rd screw mandrel and with The top surface of horizontal saddle is fixedly connected.
Preferably, described 3rd motor is motor, and described motor is connected with decelerator, described the Three screw mandrels are in transmission connection with the output shaft of described decelerator.
Because heretofore described mechanical arm has the displacement freedom in three directions, reached by the displacement of mechanical arm and specify Point, to withstand the upper end of steel column, causes the steel column lower end insertion arc-chutes of frame circuit breaker the moving contact shape with frame circuit breaker Become contact, so that steel column produces a kind of leverage, promote the moving contact of frame circuit breaker to disconnect with static contact phase and contact, And this varying load underframe chopper the active force that disconnects with static contact phase of moving contact can by with mechanical arm fixing end The pulling force sensor being fixedly connected is tested, and frame circuit breaker can be evaluated under varying load by the pulling force stability of test Carry out the reliability testing that dynamic and static contact disconnects contact.Therefore, present invention achieves carrying out under varying load to frame circuit breaker Dynamic and static contact disconnects the reliability testing of contact, can be for evaluating functional reliability offer section under varying load for the frame circuit breaker Learn foundation.
Brief description
Fig. 1 is a kind of overall structure diagram of vibration-testing mechanism for frame circuit breaker that the present invention provides;
The partial structural diagram that described mechanical arm realizes three-axis moving is embodied shown in Fig. 2;
The local attachment structure schematic diagram between workbench and the second drive mechanism is embodied shown in Fig. 3;
Working state schematic representation with steel column when inconsistent for the mechanical arm is embodied shown in Fig. 4.
In figure label is schematically as follows:1st, tetragonal body supporting frame;11st, longitudinal carrier;12nd, longitudinal rail;2nd, chopper peace Dress plate;21st, frame circuit breaker;22nd, frame cover;23rd, rotary shaft;24th, steel column;3rd, mechanical arm;31st, fixing end;32nd, freely End;4th, workbench;41st, the second drive mechanism;411st, the second motor;412nd, the second screw mandrel;413rd, the second ballscrew nut fitting; 42nd, the lower carriage of workbench;5th, horizontal saddle;51st, slide block;52nd, X-axis guide rail;53rd, the 3rd drive mechanism;531st, the 3rd motor; 532nd, the 3rd screw mandrel;533rd, the 3rd ballscrew nut fitting;534th, decelerator;6th, horizontal travelling carriage;61st, Y-axis guide rail;62nd, One drive mechanism;621st, the first motor;622nd, the first screw mandrel;623rd, the first ballscrew nut fitting;63rd, under horizontal travelling carriage Support;7th, pulling force sensor;8th, fixed seat.
Specific embodiment
Below in conjunction with accompanying drawing, technical scheme is described in further detail.
In conjunction with shown in Fig. 1 to Fig. 4:A kind of vibration-testing mechanism for frame circuit breaker that the present invention provides, including four Cube supporting frame 1, breaker mounting plate 2, mechanical arm 3, workbench 4 and horizontal saddle 5, positioned at described tetragonal body load-bearing frame It is respectively equipped with a longitudinal rail 12, correspondence sets on the side of described horizontal saddle 5 on two longitudinal carriers 11 of frame 1 side There is the slide block 51 being adapted being slidably connected respectively with longitudinal rail 12, above described horizontal saddle 5, be arranged with two X Axis rail 52, slidably connects a horizontal travelling carriage 6 in two X-axis guide rails 52, symmetrical in the both sides of described horizontal travelling carriage 6 It is provided with two Y-axis guide rails 61, described workbench 4 is slidably connected in two Y-axis guide rails 61;The fixing end 31 of described mechanical arm 3 It is connected with pulling force sensor 7, described pulling force sensor 7 is connected with fixed seat 8, described fixed seat 8 is solid with described workbench 4 Fixed connection;Frame circuit breaker 21 and frame cover 22 are provided with described breaker mounting plate 2, in described frame cover 22 Top is laterally equipped with rotary shaft 23, is rotatably connected to steel column 24 in described rotary shaft 23;Free end when described mechanical arm 3 32 inconsistent with the upper end of steel column 24 when, the lower end of steel column 24 will be inserted the arc-chutes of frame circuit breaker 21 and formed with moving contact Contact.
Described horizontal travelling carriage 6 does X-axis motion under the first drive mechanism 62, and described workbench 4 is in the second drive mechanism Do under 41 Y-axis motion, described horizontal saddle 5 under the 3rd drive mechanism 53 do Z axis motion.
Described first drive mechanism 62, the second drive mechanism 41 and the 3rd drive mechanism 53 are all using ball leading screw driving machine Structure, wherein:First drive mechanism 62 includes the first motor 621, the first screw mandrel 622 and the first ballscrew nut fitting 623, described First motor 621 is fixed on the side of horizontal saddle 5 being provided with two slide blocks 51 and is located between two slide blocks 51 on this side, One end of described first screw mandrel 622 is in transmission connection with described first motor 621, and the other end is located in lower of horizontal travelling carriage 6 On frame 63, described first ballscrew nut fitting 623 is set on the first screw mandrel 622 and the lower carriage 63 with horizontal travelling carriage 6 It is fixedly connected;Second drive mechanism 41 includes the second motor 411, the second screw mandrel 412 and the second ballscrew nut fitting 413, institute State one end that the second motor 411 is fixed on horizontal travelling carriage 6, one end of described second screw mandrel 412 is passed with described second motor 411 It is dynamically connected, the other end is located on the lower carriage 42 of workbench 4, described second ballscrew nut fitting 413 is set in second It is fixedly connected on bar 412 and with the lower carriage 42 of workbench 4;3rd drive mechanism 53 includes the 3rd motor 531, the 3rd screw mandrel 532 and the 3rd ballscrew nut fitting 533, described 3rd motor 531 is fixed on the lower section of horizontal saddle 5, described 3rd screw mandrel 532 one end is in transmission connection with described 3rd motor 531, and the other end is vertically located on horizontal saddle 5, described 3rd ball wire Stem nut pair 533 is set on the 3rd screw mandrel 532 and is fixedly connected with the top surface of horizontal saddle 5.
Preferably, described 3rd motor 531 is motor, and described motor is connected with decelerator 534, Described 3rd screw mandrel 532 is in transmission connection with the output shaft of described decelerator 534.
Because heretofore described mechanical arm 3 can achieve three-shaft displacement, thus can be reached by the displacement of mechanical arm 3 specifying Point withstanding the upper end of steel column 24, causes steel column 24 lower end to insert arc-chutes of frame circuit breaker 9 dynamic with frame circuit breaker Contact forms contact, so that steel column 24 produces a kind of leverage, promotes moving contact and the static contact phase of frame circuit breaker Disconnect contact, and this varying load underframe chopper the active force that disconnects with static contact phase of moving contact can by with machinery The pulling force sensor that arm fixing end is fixedly connected is tested, and frame circuit breaker can be evaluated by the pulling force stability of test and exists Carry out the reliability testing that dynamic and static contact disconnects contact under varying load.Therefore, the present invention can achieve to frame circuit breaker in variable load Carry out the reliability testing that dynamic and static contact disconnects contact under lotus, can be for evaluating reliable operation under varying load for the frame circuit breaker Property provide scientific basis.
Finally be necessary it is pointed out here that be:The foregoing is only the present invention preferably specific embodiment, but the present invention Protection domain be not limited thereto, any those familiar with the art the invention discloses technical scope in, The change or replacement that can readily occur in, all should be included within the scope of the present invention.

Claims (7)

1. a kind of vibration-testing mechanism for frame circuit breaker it is characterised in that:Including tetragonal body supporting frame, chopper peace Dress plate, mechanical arm, workbench and horizontal saddle, on two longitudinal carriers positioned at described tetragonal body supporting frame side respectively It is provided with a longitudinal rail, being adapted of being slidably connected respectively with longitudinal rail is correspondingly provided with the side of described horizontal saddle Slide block, be arranged with two X-axis guide rails above described horizontal saddle, two X-axis guide rails slidably connect a water Smooth moving frame, is symmetrically arranged on two with two Y-axis guide rails in described horizontal travelling carriage, and described workbench is slidably connected at two Y On axis rail;The fixing end of described mechanical arm is connected with pulling force sensor, and described pulling force sensor is connected with fixed seat, institute State fixed seat to be fixedly connected with described workbench;Frame circuit breaker and frame cover are provided with described breaker mounting plate, Laterally it is equipped with rotary shaft above described frame cover, described rotary shaft is rotatably connected to steel column;When described machinery When the free end of arm and the upper end of steel column are inconsistent, the lower end of steel column by insert the arc-chutes of frame circuit breaker and with moving contact shape Become contact.
2. vibration-testing mechanism according to claim 1 it is characterised in that:Described horizontal travelling carriage is in the first drive mechanism Under do X-axis motion, described workbench do under the second drive mechanism Y-axis motion, described horizontal saddle is under the 3rd drive mechanism Do Z axis motion.
3. vibration-testing mechanism according to claim 2 it is characterised in that:Described first drive mechanism, the second driving machine Structure and the 3rd drive mechanism are all using ball lead screw drive mechanism.
4. vibration-testing mechanism according to claim 3 it is characterised in that:Described first drive mechanism includes the first electricity Machine, the first screw mandrel and the first ballscrew nut fitting, described first motor be fixed on be provided with two slide blocks the side of horizontal saddle, And be located between two slide blocks on this side, one end of described first screw mandrel is in transmission connection with described first motor, and the other end is worn It is located on the lower carriage of horizontal travelling carriage, described first ballscrew nut fitting is set on the first screw mandrel and is slided with level The lower carriage of frame is fixedly connected.
5. vibration-testing mechanism according to claim 3 it is characterised in that:Described second drive mechanism includes the second electricity Machine, the second screw mandrel and the second ballscrew nut fitting, described second motor is fixed on one end of horizontal travelling carriage, described second One end of bar is in transmission connection with described second motor, and the other end is located on the lower carriage of workbench, described second ball screw Pair of nut is set on the second screw mandrel and is fixedly connected with the lower carriage of workbench.
6. vibration-testing mechanism according to claim 3 it is characterised in that:Described 3rd drive mechanism includes the 3rd electricity Machine, the 3rd screw mandrel and the 3rd ballscrew nut fitting, described 3rd motor is fixed on the lower section of horizontal saddle, described 3rd screw mandrel One end be in transmission connection with described 3rd motor, the other end is vertically located on horizontal saddle, described 3rd ball screw nut Secondary case is located on the 3rd screw mandrel and is fixedly connected with the top surface of horizontal saddle.
7. vibration-testing mechanism according to claim 6 it is characterised in that:Described 3rd motor is motor, described Motor is connected with decelerator, and described 3rd screw mandrel is in transmission connection with the output shaft of described decelerator.
CN201610961297.7A 2016-11-04 2016-11-04 A kind of vibration-testing mechanism for frame circuit breaker Expired - Fee Related CN106383015B (en)

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